CN111836308A - A data transmission method and communication device - Google Patents

Abstract

The embodiment of the present application discloses a data transmission method and a communication device. The method includes: a first device segments a transmission block to obtain multiple data segments of the transmission block; the first device sends the multiple data segments to the second device , wherein the time domain resources of different data segments in the multiple data segments are different, and the multiple data segments are discontinuously distributed in the time domain, and/or the frequency domain of different data segments in the multiple data segments The resources are not the same, and the distribution of the multiple data segments is discontinuous in the frequency domain. Based on the methods described in the embodiments of the present application, it is beneficial for the second device to successfully decode the transport block.

Description

A data transmission method and communication device

technical field

The present application relates to the field of communication technologies, and in particular, to a data transmission method and a communication device.

Background technique

For downlink scheduling, an access network device (such as a base station) indicates the time-frequency resource where the downlink data is located and the adopted modulation and coding scheme (MCS) through a physical downlink control channel (PDCCH). Then, after the access network device encodes and modulates the downlink data according to the MCS, it sends the downlink data to the terminal device through a physical downlink shared channel (PDSCH). After receiving the downlink data, the terminal device feeds back an ACK message to the access network device if the downlink data is successfully decoded. If decoding fails, a NACK message is fed back to the access network device. When the access network device receives the ACK message, the downlink scheduling is completed. When the access network device receives the NACK message, the access network device needs to retransmit the data.

For uplink scheduling, the terminal device first needs to send a scheduling request (schedule request, SR) to the access network device through a physical uplink control channel (physical uplink control channel, PUCCH). Then, the access network device sends the uplink grant information to the terminal device through the PDCCH, where the uplink grant information indicates the time-frequency resources and MCS of the uplink scheduling. After receiving the uplink grant information, the terminal device performs coding and modulation on the uplink data according to the MCS. The encoded and modulated uplink data is sent through a physical uplink shared channel (PUSCH). After receiving the uplink data, the access network device feeds back an ACK message to the terminal device if the uplink data is successfully decoded. If decoding fails, a NACK message is fed back to the terminal device. When the terminal device receives the ACK message, the uplink scheduling is completed. When the terminal device receives the NACK message, the terminal device needs to retransmit the data.

Therefore, once scheduling is completed, downlink and uplink occupy RTT+T_proc and 2*RTT+T_proc respectively. Among them, RTT (round-trip time) is the round-trip delay of transmission. For example, for downlink scheduling, the transmission time of the downlink data is t1, and the transmission time of the ACK message is t2, so RTT=t1+t2. T_proc represents the total processing time, including the data processing time and uplink and downlink switching time of the access network equipment and the terminal equipment.

For satellite systems, the RTT is relatively large, eg, RTT=544.751ms for GEO satellites. Since the RTT is large, T_proc is negligible relative to the RTT at this time. Therefore, the time required for scheduling uplink data once is about 1s, and the time required for scheduling downlink data once is about 0.5s. The access network device sets the modulation and coding strategy (modulation and coding) used for uplink scheduling or downlink scheduling according to channel state information (CSI) or channel quality indicator (CQI) reported by the terminal device. scheme, MCS). If the system transmission delay is large, the MCS set by the access network equipment may be inaccurate. This can result in the data receiver being unable to decode the data accurately.

For example, for uplink scheduling, if the access network device currently determines that the channel quality of a physical uplink shared channel (PUSCH) is better, the access network device sets a higher MCS for the PUSCH. However, due to the large transmission delay of the system, it takes a long time for the terminal device to receive the uplink authorization information. At this time, the channel quality of the PUSCH has deteriorated, and the terminal device uses the MCS set by the access network device to modulate and encode the uplink data of the PUSCH, which will cause the access network device to fail to decode the uplink data after receiving the uplink data of the PUSCH. .

Therefore, how to reduce the data decoding failure rate is an urgent problem to be solved at present.

SUMMARY OF THE INVENTION

The embodiments of the present application provide a data transmission method and a communication device, which are beneficial to reduce the data decoding failure rate.

In a first aspect, an embodiment of the present application provides a data transmission method. The method includes: a first device segments a transmission block to obtain multiple data segments of the transmission block; the first device sends multiple data segments to the second device segment, wherein the time domain resources of different data segments in the multiple data segments are different, and the multiple data segments are discontinuously distributed in the time domain, and/or the frequency of different data segments in the multiple data segments The domain resources are not the same, and the distribution of the multiple data segments in the frequency domain is discontinuous. Based on the method described in the first aspect, it is beneficial for the second device to successfully decode the transport block.

Optionally, the transport block is a transport block after data interleaving. The use of interleaving can discretize the error code, so that the receiving end can use the coding technology to correct random errors to eliminate random errors, thereby improving the transmission quality of the entire data sequence.

Optionally, the first device is an access network device, the second device is a terminal device, and before the first device sends multiple data segments to the second device, the first device sends first information to the second device, the first information It includes the number of data segments to be divided into the transport block, and the first information is also used by the second device to determine the time-frequency resources of each data segment of the transport block. Based on this optional method, the access network device may send the first information to the terminal device in advance to notify the terminal device of the number of data segments to be divided into the transmission block and the time-frequency resources of each data segment of the transmission block, so that the terminal device can successfully received the data segment of the transport block.

Optionally, the first device is a terminal device, the second device is an access network device, the first device segments the transmission block, and before obtaining multiple data segments of the transmission block, the following steps may also be performed: The second device receives the first information, the first information includes the number of data segments to be divided into the transmission block, and the first information is also used by the first device to determine the time-frequency resources of each data segment of the transmission block; The information determines the time-frequency resources of each data segment of the transport block; the first device segments the transport block to obtain multiple data segments of the transport block. The specific implementation is: the first device segments the transport block according to the number of data segments to obtain multiple data segments of the transmission block; the specific implementation of the first device sending multiple data segments to the second device is as follows: the first device sends multiple data segments to the second device according to the time-frequency resources of each data segment of the transmission block. part. Based on this optional method, the access network device may send the first information to the terminal device in advance to notify the terminal device of the number of data segments to be divided into the transmission block and the time-frequency resources of each data segment of the transmission block, so that the terminal device can The number of data segments divides the data segments into the transport block, and sends the multiple data segments according to the time-frequency resources of each data segment of the transport block.

Optionally, any two first time-domain offsets are the same, any two first frequency-domain offsets, and the first time-domain offset is the time between two adjacent data segments sent in the transport block. domain offset, the first frequency domain offset is the frequency domain offset between two adjacent data segments of the transport block, and the first information further includes the time-frequency resources of the first data segment, the first time domain offset and the first frequency domain offset, where the first data segment is the first transmitted data segment of the transport block. Based on this optional method, the access network device does not directly notify the time-frequency resources of each data segment, but only needs to send the time-frequency resources, the first time-domain offset and the first frequency-domain offset of the first data segment , the terminal device can determine the time-frequency resources of each data segment, which is beneficial to saving transmission bits.

Optionally, at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, and the first The time-domain offset is the time-domain offset between two adjacent data segments of the transport block, and the first frequency-domain offset is the frequency domain between the two adjacent data segments of the transport block. Offset, the first information further includes the time-frequency resource of the first data segment and the scheduling mode number, and the scheduling mode number is the time domain offset of each second data segment relative to the first data segment and the relative value of each second data segment. The frequency domain offset of the first data segment has a mapping relationship, the first data segment is the first sent data segment of the transport block, and the second data segment is the data segment of the transport block except the first data segment. Based on this optional method, the access network device does not directly notify the time-frequency resource of each data segment, but only needs to send the time-frequency resource and scheduling method number of the first data segment, and the terminal device can determine the time-frequency resource of each data segment. frequency resources, which is conducive to saving transmission bits.

Optionally, at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, and the first The time-domain offset is the time-domain offset between two adjacent data segments of the transport block, and the first frequency-domain offset is the frequency domain between the two adjacent data segments of the transport block. Offset, the first information further includes the time-frequency resource and scheduling mode number of the first data segment, the scheduling mode number and the modulation and coding scheme MCS information, the time domain offset of each second data segment relative to the first data segment and Each second data segment has a mapping relationship with the frequency domain offset of the first data segment, the first data segment is the first data segment sent in the transport block, and the second data segment is the first data segment of the transport block except the first data segment outside the data segment. Based on this optional method, the access network device does not directly notify the time-frequency resource of each data segment, but only needs to send the time-frequency resource and scheduling method number of the first data segment, and the terminal device can determine the time-frequency resource of each data segment. frequency resources, which is conducive to saving transmission bits.

Optionally, the first device is an access network device, the second device is a terminal device, and before the first device sends multiple data segments to the second device, the first device may also send first information to the second device, the first device The information includes the number of data segments divided by the transport block and the range of time-frequency resources. The specific implementation of the first device sending multiple data segments to the second device is as follows: the first device sends multiple data segments to the second device within the time-frequency resource range. part. Based on this optional manner, it is beneficial to save transmission bits.

Optionally, the first device may determine the number of data segments to be divided into the transport block according to the channel quality or transmission delay requirement of the physical downlink shared channel PDSCH. Based on this optional manner, the number of data segments to be divided into the transport block can be flexibly determined.

Optionally, the first device is a terminal device, the second device is an access network device, the first device segments the transmission block, and before obtaining multiple data segments of the transmission block, the first device receives the first device from the second device. The first information includes the number of data segments divided by the transport block and the range of time-frequency resources; the specific implementation of the first device segmenting the transport block is: the first device segments the transport block according to the number of data segments; A specific implementation manner of a device sending multiple data segments to a second device is as follows: the first device sends multiple data segments to the second device within the time-frequency resource range. Based on this optional manner, it is beneficial to save transmission bits.

In a second aspect, an embodiment of the present application provides a data transmission method, the method includes: a second device receives a plurality of data segments of a transmission block from a first device, wherein the time of different data segments in the plurality of data segments is The domain resources are not the same, and the multiple data segments are not continuously distributed in the time domain, and/or, the frequency domain resources of different data segments in the multiple data segments are different, and the multiple data segments are not distributed in the frequency domain. Continuous; the second device combines multiple data segments into a transport block.

Optionally, the transport block is a transport block after data interleaving.

Optionally, the first device is an access network device, the second device is a terminal device, and before the second device receives the multiple data segments of the transport block from the first device, the following steps may also be performed: Receive first information, where the first information includes the number of data segments to be divided into the transmission block, and the first information is also used by the second device to determine the time-frequency resources of each data segment of the transmission block; the second device determines the transmission block according to the first information The time-frequency resources of each data segment of the block; the specific implementation of the second device receiving the multiple data segments of the transmission block from the first device is: the second device is based on the number of data segments and the time-frequency resources of each data segment of the transmission block. The first device receives the plurality of data segments of the transport block.

Optionally, the first device is a terminal device, the second device is an access network device, and before the second device receives multiple data segments of the transport block from the first device, the second device sends the first information to the second device, the The first information includes the number of data segments to be divided into the transport block, and the first information is also used by the first device to determine the time-frequency resources of each data segment of the transport block.

Optionally, any two first time-domain offsets are the same, any two first frequency-domain offsets are the same, and the first time-domain offset is the difference between the two adjacent data segments sent in the transport block. Time-domain offset, the first frequency-domain offset is the frequency-domain offset between two adjacent data segments of the transport block, and the first information further includes the time-frequency resources of the first data segment, the first The time domain offset and the first frequency domain offset, the first data segment is the first transmitted data segment of the transport block.

Optionally, at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, and the first The time-domain offset is the time-domain offset between two adjacent data segments of the transport block, and the first frequency-domain offset is the frequency domain between the two adjacent data segments of the transport block. Offset, the first information further includes the time-frequency resource of the first data segment and the scheduling mode number, and the scheduling mode number is relative to the time domain offset of each second data segment relative to the first data segment and each second data segment. The frequency domain offset of the first data segment has a mapping relationship, the first data segment is the first sent data segment of the transport block, and the second data segment is the data segment of the transport block except the first data segment.

Optionally, at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, and the first The time-domain offset is the time-domain offset between two adjacent data segments of the transport block, and the first frequency-domain offset is the frequency domain between the two adjacent data segments of the transport block. Offset, the first information further includes the time-frequency resource and scheduling mode number of the first data segment, the scheduling mode number and the modulation and coding scheme MCS information, the time domain offset of each second data segment relative to the first data segment and Each second data segment has a mapping relationship with the frequency domain offset of the first data segment, the first data segment is the first data segment sent in the transport block, and the second data segment is the first data segment of the transport block except the first data segment outside the data segment.

Optionally, the first device is an access network device, the second device is a terminal device, and before the second device receives the multiple data segments of the transport block from the first device, the second device receives the first information from the first device, the The first information includes the number of data segments divided by the transport block and the range of time-frequency resources; the specific implementation of the second device receiving multiple data segments of the transport block from the first device is: the second device is based on the number of data segments in the range of time-frequency resources. A plurality of data segments of a transport block are received from the first device.

Optionally, the first device is a terminal device, the second device is an access network device, and before the second device receives multiple data segments of the transport block from the first device, the second device sends the first information to the second device, the The first information includes the number of data segments divided by the transport block and the range of time-frequency resources; the specific implementation of the second device receiving multiple data segments of the transport block from the first device is: the second device is based on the number of data segments in the range of time-frequency resources. A plurality of data segments of a transport block are received from the first device.

Optionally, the second device determines the number of data segments to be divided into the transport block according to the channel quality or transmission delay requirement of the physical uplink shared channel PUSCH.

Based on the same inventive concept, for the beneficial effects of the second aspect or the optional manners of the second aspect, reference may be made to the foregoing first aspect or the beneficial effects of the optional manners of the first aspect, and repeated details will not be repeated.

In a third aspect, an embodiment of the present application provides a data transmission method, the method includes: a first device obtains a transmission block to be sent; the first device sends multiple copies of the transmission block to the second device, wherein the transmission block of each share is The time domain resources are different, and the multiple transport blocks are not consecutively distributed in the time domain, and/or the frequency domain resources of each transport block are different, and the multiple transport blocks are discontinuous in the frequency domain distribution. Based on the method described in the third aspect, it is beneficial for the second device to successfully decode the transport block.

Optionally, the first device is an access network device, the second device is a terminal device, and before the first device sends multiple copies of the transmission block to the second device, the first device sends first information to the second device, the first information Including the number of transmission blocks sent, the first information is also used by the second device to determine the time-frequency resources of each transmission block; the specific implementation of the first device sending multiple copies of the transmission block to the second device is: the first device according to Sending the number of copies and the time-frequency resources of each transport block to the second device sends multiple copies of the transport block. Based on this optional manner, the access network device may send the first information to the terminal device in advance to notify the terminal device of the transmission block transmission fraction and the time-frequency resources of each transmission block, so that the terminal device can successfully receive the transmission block.

Optionally, the first device is a terminal device, the second device is an access network device, and before the first device sends multiple copies of the transmission block to the second device, the following steps may also be performed: the first device receives the first device from the second device. information, the first information includes the number of transmission blocks sent, and the first information is also used by the first device to determine the time-frequency resources of each transmission block; the first device determines the time-frequency resources of each transmission block according to the first information The specific implementation manner of the first device sending multiple copies of the transmission block to the second device is as follows: the first device sends multiple copies of the transmission block to the second device according to the number of transmission blocks sent and the time-frequency resources of each transmission block. Based on this optional method, the access network device can send the first information to the terminal device in advance to notify the terminal device of the number of transmission blocks to be sent and the time-frequency resources of each transmission block, so that the terminal device can The number of sent copies and the time-frequency resources of each transport block are sent to the access network device in multiple copies of the same transport block.

Optionally, any two first time-domain offsets are the same, any two first frequency-domain offsets are the same, and the first time-domain offset is the time-domain offset between two adjacent transmission blocks sent. offset, the first frequency-domain offset is the frequency-domain offset between two adjacent transmission blocks sent, and the first information also includes the time-frequency resources of the first transmitted transmission block, the first time-domain offset offset and the first frequency domain offset. Based on this optional method, the access network device does not directly notify the time-frequency resources of each transport block, but only needs to send the time-frequency resources, the first time domain offset and the first frequency domain of the transport block sent for the first time. With the offset, the terminal device can determine the time-frequency resources of each transmission block, which is beneficial to saving transmission bits.

Optionally, at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, and the first The time-domain offset is the time-domain offset between the transmission blocks sent twice adjacently, the first frequency-domain offset is the frequency-domain offset between the two adjacent transmission blocks sent, the first The information also includes the time-frequency resource and the scheduling mode number of the first transport block, the scheduling mode number and the time domain offset of each second transport block relative to the first transport block and the time domain offset of each second transport block relative to the first transport block. The frequency domain offset has a mapping relationship, the first transport block is the transport block sent for the first time, and the second transport block is the transport block sent except the first transport block. Based on this optional method, the access network device does not directly notify the time-frequency resource of each transmission block, but only needs to send the time-frequency resource and scheduling method number of the first transmission block, and the terminal device can determine the time-frequency resource of each transmission block. frequency resources, which is conducive to saving transmission bits.

Optionally, at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, and the first The time-domain offset is the time-domain offset between the transmission blocks sent twice adjacently, the first frequency-domain offset is the frequency-domain offset between the two adjacent transmission blocks sent, the first The information also includes the time-frequency resource and scheduling mode number of the first transport block, and the scheduling mode number is related to the modulation and coding scheme MCS information, the time domain offset of each second transport block relative to the first transport block, and the relative value of each second transport block. The frequency domain offset of the first transport block has a mapping relationship, the first transport block is a transport block sent for the first time, and the second transport block is a transport block sent except the first transport block. Based on this optional method, the access network device does not directly notify the time-frequency resource of each transmission block, but only needs to send the time-frequency resource and scheduling method number of the first transmission block, and the terminal device can determine the time-frequency resource of each transmission block. frequency resources, which is conducive to saving transmission bits.

Optionally, the first device is an access network device, the second device is a terminal device, and before the first device sends multiple copies of the transmission block to the second device, the first device sends first information to the second device, the first information Including the number of transmission blocks and the range of time-frequency resources; the specific implementation of the first device sending multiple copies of the transmission block to the second device is: the first device sends the transmission block to the second device in the range of time-frequency resources according to the number of transmissions. multiple copies. Based on this optional manner, it is beneficial to save bit information.

Optionally, before the first device sends the first information to the second device, the first device determines the number of transmission blocks to be sent according to the channel quality of the physical downlink shared channel PDSCH. Based on this optional manner, the number of copies of the transport block to be sent can be flexibly determined.

Optionally, the first device is a terminal device, the second device is an access network device, and before the first device sends a transmission block to the second device multiple times, the first device receives first information from the second device, the first information Including the number of transmission blocks and the range of time-frequency resources; the specific implementation of the first device sending multiple copies of the transmission block to the second device is: the first device sends the transmission block to the second device in the range of time-frequency resources according to the number of transmissions. multiple copies. Based on this optional manner, the transport block can be decoded quickly and accurately.

In a fourth aspect, an embodiment of the present application provides a data transmission method, the method includes: a second device receives multiple copies of the same transmission block from the first device, wherein the time domain resources of each transmission block are different, and the multiple copies The transport blocks are not consecutively distributed in the time domain, and/or the frequency domain resources of each transport block are different, and the multiple transport blocks are not consecutively distributed in the frequency domain; the second device combines the multiple transport blocks.

Optionally, the first device is an access network device, the second device is a terminal device, and before the second device receives multiple copies of the same transmission block from the first device, the following steps may also be performed: the second device receives the first device from the first device. A piece of information, the first information includes the number of transmission blocks to be sent, and the first information is also used by the second device to determine the time-frequency resources of each transmission block; the second device determines the time-frequency resources of each transmission block according to the first information The specific implementation of the second device receiving multiple copies of the same transmission block from the first device is as follows: the second device receives multiple copies of the same transmission block from the first device according to the number of sent copies and the time-frequency resources of each transmission block.

Optionally, the first device is a terminal device, the second device is an access network device, and before the second device receives multiple copies of the same transmission block from the first device, the second device sends first information to the first device, the first The information includes the number of transmission blocks sent, and the first information is also used by the first device to determine the time-frequency resources of each transmission block; the specific implementation for the second device to receive multiple copies of the same transmission block from the first device is as follows: the second The device receives multiple copies of the same transport block from the first device according to the number of sent copies and the time-frequency resources of each transport block.

Optionally, any two first time-domain offsets are the same, any two first frequency-domain offsets are the same, and the first time-domain offset is the time-domain offset between two adjacent transmission blocks sent. offset, the first frequency-domain offset is the frequency-domain offset between two adjacent transmission blocks sent, and the first information also includes the time-frequency resources of the first transmitted transmission block, the first time-domain offset offset and the first frequency domain offset.

Optionally, at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, and the first The time-domain offset is the time-domain offset between the transmission blocks sent twice adjacently, the first frequency-domain offset is the frequency-domain offset between the two adjacent transmission blocks sent, the first The information also includes the time-frequency resource and the scheduling mode number of the first transport block, the scheduling mode number and the time domain offset of each second transport block relative to the first transport block and the time domain offset of each second transport block relative to the first transport block. The frequency domain offset has a mapping relationship, the first transport block is the transport block sent for the first time, and the second transport block is the transport block sent except the first transport block.

Optionally, at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, and the first The time-domain offset is the time-domain offset between the transmission blocks sent twice adjacently, the first frequency-domain offset is the frequency-domain offset between the two adjacent transmission blocks sent, the first The information also includes the time-frequency resource and scheduling mode number of the first transport block, and the scheduling mode number is related to the modulation and coding scheme MCS information, the time domain offset of each second transport block relative to the first transport block, and the relative value of each second transport block. The frequency domain offset of the first transport block has a mapping relationship, the first transport block is a transport block sent for the first time, and the second transport block is a transport block sent except the first transport block.

Optionally, the first device is an access network device, the second device is a terminal device, and before the second device receives multiple copies of the same transmission block from the first device, the second device receives the first information from the first device, the first The information includes the number of transmission blocks and the range of time-frequency resources; the specific implementation of the second device receiving multiple copies of the same transmission block from the first device is: the second device receives the number of transmissions from the first device in the range of time-frequency resources according to the number of transmissions. Multiple copies of the same transport block.

Optionally, the first device is a terminal device, the second device is an access network device, and before the second device receives multiple copies of the same transmission block from the first device, the second device sends first information to the first device, the first The information includes the number of transmission blocks and the range of time-frequency resources; the specific implementation of the second device receiving multiple copies of the same transmission block from the first device is: the second device receives the number of transmissions from the first device in the range of time-frequency resources according to the number of transmissions. Multiple copies of the same transport block.

Optionally, before the second device sends the first information to the first device, the second device determines the number of transmission blocks to be sent according to the channel quality of the physical uplink shared channel PUSCH.

Optionally, when the second device successfully decodes the combined transport block, it sends an ACK message to the first device, where the combined transport block is a transport block obtained by combining M received transport blocks, and M is less than or equal to the transmission block sent. Number of copies N.

Based on the same inventive concept, for the beneficial effects of the fourth aspect or the optional manners of the fourth aspect, reference may be made to the beneficial effects of the third aspect or the optional manners of the third aspect, and repetitions will not be repeated.

In a fifth aspect, a communication device is provided, which can perform the method of any one of the foregoing first to fourth aspects and optional implementations of the first aspect to optional implementations of the fourth aspect. This function can be implemented by hardware or by executing corresponding software by hardware. The hardware or software includes one or more units corresponding to the above-mentioned functions. The unit may be software and/or hardware. Based on the same inventive concept, the principle and beneficial effect of the communication device for solving the problem can refer to any one of the above-mentioned first to fourth aspects and optional implementations of the first aspect to optional implementations of the fourth aspect The method and beneficial effects are not repeated here.

In a sixth aspect, a communication device is provided, the network device includes: a processor, a memory, and a communication interface; the processor, the communication interface, and the memory are connected; wherein, the communication interface may be a transceiver. The communication interface is used to realize communication with other network elements. Wherein, one or more programs are stored in a memory, and the processor invokes the programs stored in the memory to implement the above-mentioned first to fourth aspects, optional implementations of the first aspect to optional implementations of the fourth aspect For the method of any one of the selected embodiments, the embodiments and beneficial effects of the network device for solving the problem can refer to the above-mentioned first to fourth aspects, optional implementations of the first aspect to optional implementations of the fourth aspect The method and beneficial effects of any one of the embodiments will not be repeated for repeated points.

In a seventh aspect, a computer program product is provided, which, when running on a computer, enables the computer to execute the above-mentioned first to fourth aspects, optional implementations of the first aspect to optional implementations of the fourth aspect any of the methods.

In an eighth aspect, a chip product is provided, which executes the method of any one of the above-mentioned first to fourth aspects and optional implementations of the first aspect to optional implementations of the fourth aspect.

In a ninth aspect, a computer-readable storage medium is provided, and instructions are stored in the computer-readable storage medium, and when the computer-readable storage medium is run on a computer, the computer is made to execute the above-mentioned first to fourth aspects and the first aspect The method of any one of the optional embodiments of the fourth aspect to the optional embodiments of the fourth aspect.

Description of drawings

1 is a schematic structural diagram of an existing communication system;

2 is a schematic flowchart of a data transmission method provided by an embodiment of the present application;

3 is a schematic diagram of a data segment provided by an embodiment of the present application;

4 is a schematic diagram of a data segment provided by an embodiment of the present application;

5 is a schematic diagram of a time-frequency resource of a data segment provided by an embodiment of the present application;

6 is a schematic diagram of a time-frequency resource of a data segment provided by an embodiment of the present application;

7 is a schematic diagram of a time-frequency resource of a data segment provided by an embodiment of the present application;

8 is a schematic diagram of a time-frequency resource of a data segment provided by an embodiment of the present application;

9 is a schematic diagram of a time-frequency resource of a data segment provided by an embodiment of the present application;

10 is a schematic flowchart of a data transmission method provided by an embodiment of the present application;

11 is a schematic diagram of a time-frequency resource of a data segment provided by an embodiment of the present application;

12 is a schematic diagram of a time-frequency resource of a data segment provided by an embodiment of the present application;

13 is a schematic flowchart of a data transmission method provided by an embodiment of the present application;

14 is a schematic flowchart of a data transmission method provided by an embodiment of the present application;

15 is a schematic flowchart of a data transmission method provided by an embodiment of the present application;

16 is a schematic flowchart of a data transmission method provided by an embodiment of the present application;

17 is a schematic diagram of a time-frequency resource of a data segment provided by an embodiment of the present application;

18 is a schematic diagram of a time-frequency resource of a data segment provided by an embodiment of the present application;

19 is a schematic diagram of a time-frequency resource of a data segment provided by an embodiment of the present application;

20 is a schematic diagram of a time-frequency resource of a data segment provided by an embodiment of the present application;

21 is a schematic diagram of a time-frequency resource of a data segment provided by an embodiment of the present application;

22 is a schematic flowchart of a data transmission method provided by an embodiment of the present application;

23 is a schematic flowchart of a data transmission method provided by an embodiment of the present application;

24 is a schematic flowchart of a data transmission method provided by an embodiment of the present application;

25 is a schematic flowchart of a data transmission method provided by an embodiment of the present application;

FIG. 26 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 27 is a schematic structural diagram of a communication device provided by an embodiment of the present application.

Detailed ways

The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

The embodiments of the present application provide a data transmission method and a communication device, which are beneficial to reduce the data decoding failure rate.

In order to better understand the embodiments of the present application, a system architecture applicable to the embodiments of the present application is described below.

FIG. 1 is a schematic diagram of a communication system provided by an embodiment of the present application. As shown in FIG. 1, the communication system includes a first device and a second device. Wherein, when the first device is an access network device, the second device is a terminal device. When the first device is a terminal device, the second device is an access network device. The data sent by the access network device to the terminal device is called downlink data, and the data sent by the terminal device to the access network device is called uplink data.

The access network device may provide communication coverage for a specific geographic area, and may communicate with terminal devices located in the coverage area, and the access network device may support communication protocols of different standards, or may support different communication protocols. communication mode. For example, the access network device may be an evolutional node B (evolutional node B, eNB or eNodeB) in the LTE system, or a radio network controller in a cloud radio access network (cloud radio access network, CRAN), or may be 5G The access network equipment in the network, such as gNB, can be either a small station, a micro station or a transmission reception point (TRP), or a relay station, an access point or a future evolved public land mobile network (public land mobile network). mobile network, PLMN) access network equipment, etc.

Wherein, the terminal equipment may refer to an access terminal, user equipment (user equipment, UE), subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile terminal, user terminal, terminal, wireless communication equipment , user agent or user device. The access terminal can be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a wireless communication function handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, end devices in the Internet of Things, virtual reality devices, end devices in future 5G networks or future evolved public land mobile networks ( terminal equipment in public landmobile network, PLMN), etc.

The data transmission method and communication device provided by the present application will be further introduced below.

Please refer to FIG. 2 , which is a schematic flowchart of a data transmission method provided by an embodiment of the present application. As shown in FIG. 2, the data transmission method includes the following steps 201-203, wherein:

201. The first device segments a transport block (Transport Block, TB) to obtain multiple data segments of the transport block.

As mentioned above, the first device may be an access network device or a terminal device. When the first device is an access network device, the second device is a terminal device. When the first device is a terminal device, the second device is an access network device. When the first device is an access network device and the second device is a terminal device, the transport block is a transport block used for downlink transmission. When the first device is a terminal device and the second device is an access network device, the transport block is a transport block used for uplink transmission.

The first device may divide the transmission block into 2 data segments, or into 3 data segments, or into 4 data segments, or into more data segments, which is not limited in the embodiment of the present application.

As an optional implementation manner, the above-mentioned transport block may be a transport block without data interleaving, that is, directly segment the transport block to be transmitted, and then obtain multiple data segments of the transport block.

As an optional implementation manner, the above-mentioned transmission block may be a transmission block obtained after data interleaving, that is, first perform data interleaving on the transmission block to be transmitted, and then segment the data-interleaved transmission block to obtain The data interleaves the multiple data segments of the transport block.

On a variable-parameter channel such as land mobile communication, a long-lasting deep fading valley will affect a series of bits, so that bit errors often occur in series. However, channel coding can only detect and correct single errors and not too long error strings. In order to solve the problem of clustered bit errors, interleaving technology is used: a method of spreading out successive bits in a message, that is, successive bits in a message are sent in a non-sequential manner. In this way, even if a series of errors occur during the transmission, when the message is recovered into a series of consecutive bits, the error will become a single (or very short-length) erroneous bit. That is to say, the use of interleaving can make the error code discretized, so that the receiving end can use the coding technology to correct random errors to eliminate random errors, thereby improving the transmission quality of the entire data sequence.

As an optional implementation manner, the data of the multiple data segments of the above-mentioned transmission block does not have overlapping data, or, at least two data segments of the multiple data segments of the above-mentioned transmission block have overlapping data, that is, the multiple data segments have overlapping data. The data segment includes redundant versions of transport blocks.

For example, the data of a plurality of data segments of the above-mentioned transport block does not have overlapping data as an example. As shown in Figure 3, the transport block is divided into 3 data segments, and the data of each data segment does not overlap.

For another example, it is taken as an example that at least two data segments in the multiple data segments of the above-mentioned transport block have overlapping data. As shown in Figure 4, the transport block is divided into three data segments, the data of data segment 1 and data segment 2 overlap, the data of data segment 2 and data segment 3 overlap, and the data of data segment 1 and data segment 3 also overlap.

As an optional implementation manner, the lengths of each data segment may be the same or different, which is not limited in this embodiment of the present application.

202. The first device sends the multiple data segments to the second device.

Specifically, after the first device obtains the multiple data segments of the transmission block, the first device sends the multiple data segments to the second device.

Wherein, the time domain resources of different data segments in the multiple data segments are not the same, and the time domain distribution of the multiple data segments is discontinuous, and/or the frequency domain resources of different data segments in the multiple data segments are different, and the distribution of the multiple data segments is discontinuous in the frequency domain.

For example, the time domain resources of different data segments in the multiple data segments are different, and the multiple data segments are discontinuously distributed in the time domain as an example. It is assumed that the multiple data segments include 3 data segments, which are data segment 1, data segment 2, and data segment 3, respectively. Wherein, the discontinuous distribution of the multiple data segments in the time domain may refer to the multiple data segments being completely discontinuous in the time domain. As shown in FIG. 5 , the time domain resources of the data segment 1, the data segment 2 and the data segment 3 are different, and the data segment 1, the data segment 2 and the data segment 3 are discontinuous in the time domain. Alternatively, the discontinuous distribution of the plurality of data segments in the time domain means that the plurality of data segments are partially discontinuous in the time domain. As shown in FIG. 6 , the time domain resources of data segment 1, data segment 2 and data segment 3 are different, and data segment 1 and data segment 2 are continuous in time domain, and data segment 2 and data segment 3 are discontinuous in time domain.

For another example, the frequency domain resources of different data segments in the plurality of data segments are different, and the distribution of the multiple data segments in the frequency domain is discontinuous as an example. It is assumed that the multiple data segments include 3 data segments, which are data segment 1, data segment 2, and data segment 3, respectively. Wherein, the discontinuous distribution of the multiple data segments in the frequency domain may mean that the multiple data segments are completely discontinuous in the frequency domain. As shown in FIG. 7 , the frequency domain resources of the data segment 1, the data segment 2 and the data segment 3 are different, and the data segment 1, the data segment 2 and the data segment 3 are discontinuous in the frequency domain. Alternatively, the discontinuous distribution of the multiple data segments in the frequency domain means that the multiple data segments are partially discontinuous in the frequency domain. As shown in FIG. 8 , the frequency domain resources of data segment 1, data segment 2 and data segment 3 are different, and data segment 1 and data segment 2 are continuous in the frequency domain, and data segment 2 and data segment 3 are discontinuous in the frequency domain.

For another example, the time domain resources of different data segments in the multiple data segments are not the same, and the time domain distribution of the multiple data segments is discontinuous, and the frequency domain resources of different data segments in the multiple data segments are different. It is an example that the distribution of the multiple data segments is not continuous in the frequency domain. It is assumed that the multiple data segments include 3 data segments, which are data segment 1, data segment 2, and data segment 3, respectively. As shown in FIG. 9 , data segment 1, data segment 2 and data segment 3 have different time domain resources and frequency domain resources, and data segment 1, data segment 2 and data segment 3 are not continuous in time domain and frequency domain. The discontinuous distribution of the multiple data segments in the time domain may mean that the multiple data segments are completely discontinuous in the time domain, or the discontinuous distribution of the multiple data segments in the time domain means that the multiple data segments are partially discontinuous in the time domain. The discontinuous distribution of the multiple data segments in the frequency domain may mean that the multiple data segments are completely discontinuous in the frequency domain, and the discontinuous distribution of the multiple data segments in the time domain means that the multiple data segments are partially discontinuous in the frequency domain. Figure 9 takes as an example that multiple data segments are completely discontinuous in the time and frequency domains.

203. The second device synthesizes the multiple data segments into a transport block.

In this embodiment of the present application, after receiving the multiple data segments of the transport block from the first device, the second device combines the multiple data segments into the transport block.

For example, the first device divides the transport block into 3 data segments, which are data segment 1, data segment 2, and data segment 3, respectively. After receiving the data segment 1, data segment 2 and data segment 3, the second device synthesizes the data segment 1, data segment 2 and data segment 3 into a transmission block.

If the synthesized transport block is a transport block after data interleaving, after synthesizing a plurality of data segments into a transport block, the second device needs to restore the synthesized transport block to a transport block before data interleaving.

It can be seen that, by implementing the method described in FIG. 2 , because the time domain resources of the multiple data segments of the transport block are different, and the multiple data segments are not consecutively distributed in the time domain, and/or, the multiple data segments of the transport block have different time domain resources. The frequency domain resources are different, and the distribution of the multiple data segments in the frequency domain is discontinuous. Therefore, the second device can obtain the time-domain diversity gain and/or the frequency-domain diversity gain, which is beneficial for the second device to successfully decode the transport block.

Please refer to FIG. 10. FIG. 10 is a schematic flowchart of a data transmission method provided by an embodiment of the present application. 10 , the first device is an access network device and the second device is a terminal device as an example. The application scenario of FIG. 10 is the downlink transmission application scenario of the transport block. As shown in FIG. 10, the data transmission method includes the following steps 1001-1005, wherein:

1001. An access network device sends first information to a terminal device.

The first information includes the number of data segments divided by the transport block, and the first information is also used by the terminal device to determine the time-frequency resources of each data segment of the transport block.

That is to say, the access network device needs to determine the number of data segments divided into the transport block, and determine the time-frequency resources of each data segment of the transport block. After the access network device determines the number of the data segments and the time-frequency resources of each data segment of the transport block, it sends the first information to the terminal device. Optionally, the first information may be downlink control information (downlink control information, DCI), or other information.

As an optional implementation manner, the access network device determines the number of data segments to be divided into the transport block according to channel quality or transmission delay requirements of a physical downlink shared channel (PDSCH). Based on this implementation, it is possible to flexibly determine the number of data segments that the transport block needs to be divided into.

For example, if the channel quality of the PDSCH is good, the number of data segments that need to be divided into the transport block may be less, so that the receiving end can receive the data segments of the transport block more quickly. If the channel quality of PDSCH is poor, the number of data segments that need to be divided into the transport block can be larger. Data decoding failure rate. For another example, if the transmission delay requirement is relatively high, the number of data segments that need to be divided into the transmission block may be less, so that the receiving end can receive the data segments of the transmission block more quickly and meet the transmission delay requirement. If the transmission delay requirement is low, the number of data segments that need to be divided into the transmission block can be larger, and the more the number of data segments, the greater the time domain diversity gain and/or the frequency domain diversity gain obtained, which is beneficial to reduce the receiving end. Data decoding failure rate.

1002. The terminal device determines, according to the first information, time-frequency resources of each data segment of the transport block.

In the embodiment of the present application, after receiving the first information from the access network device, the terminal device determines the time-frequency resources of each data segment of the transmission block according to the first information. For example, if the transport block is divided into 3 data segments, the number of data segments divided into the transport block included in the first information is 3, and the first information is also used by the terminal device to determine the time-frequency resources of the 3 data segments of the transport block. After receiving the first information, the terminal device determines the time-frequency resources of the three data segments of the transport block according to the first information.

The access network device may indicate the time-frequency resources of each data segment of the terminal device transmission block in the following manners.

Mode 1: Any two first time-domain offsets are the same, and any two first frequency-domain offsets are the same, and the first time-domain offset is the difference between the two adjacent data segments of the transmission block. Time-domain offset, the first frequency-domain offset is the frequency-domain offset between two adjacent data segments of the transport block, and the first information further includes the time-frequency resources of the first data segment, the first A time domain offset and a first frequency domain offset, where the first data segment is the first transmitted data segment of the transport block.

Correspondingly, the terminal device may determine the time-frequency resource of the second transmitted data segment according to the time-frequency resource of the first data segment, the first time-domain offset, and the first frequency-domain offset. The terminal device may determine the time-frequency resource of the third data segment sent according to the time-frequency resource, the first time-domain offset, and the first frequency-domain offset of the second sent data segment. By analogy, the time-frequency resource of the next data segment can be determined according to the time-frequency resource, the first time-domain offset and the first frequency-domain offset of the previous data segment.

For example, the access network device determines that the number of data segments to be divided into the transmission block is 3, and the time-frequency resources allocated by the access network device for data segments 1 to 3 are shown in FIG. 11 . As shown in FIG. 11 , the time domain resources and frequency domain resources of data segment 1, data segment 2 and data segment 3 are all different. The time domain offset between data segment 1 and data segment 2 is 2 symbols. The time domain offset between data segment 2 and data segment 3 is 2 symbols. The frequency domain offset between data segment 1 and data segment 2 is 30khz. The frequency domain offset between data segment 2 and data segment 3 is 30khz. That is, the time-domain offset between data segment 1 and data segment 2 is equal to the time-domain offset between data segment 2 and data segment 3 . The frequency domain offset between data segment 1 and data segment 2 is equal to the frequency domain offset between data segment 2 and data segment 3. The first information sent by the access network device to the terminal device includes the number of data segments to be divided into the transport block (that is, 3), the time-frequency resources of data segment 1, the first time-domain offset (that is, 2 symbols), and the first Frequency domain offset (ie 30khz). After receiving the first information, the terminal device can determine the time of data segment 2 according to the time-frequency resources of data segment 1, the first time-domain offset (ie, 2 symbols) and the first frequency-domain offset (ie, 30khz). frequency resources. Time domain resources of data segment 2=time domain resources of data segment 1+2 symbols. Frequency domain resources of data segment 2=frequency domain resources of data segment 1+30khz. After the terminal device determines the time-frequency resources of the data segment 2, the data segment can be determined according to the time-frequency resources of the data segment 2, the first time-domain offset (ie, 2 symbols) and the first frequency-domain offset (ie, 30khz). 3 time-frequency resources. Time domain resources of data segment 3=time domain resources of data segment 2+2 symbols. Frequency domain resources of data segment 3=frequency domain resources of data segment 2+30khz.

Based on the first method, the access network device does not directly notify the time-frequency resources of each data segment, but only needs to send the time-frequency resources of the first data segment, the first time domain offset and the first frequency domain offset. The time-frequency resources of each data segment can be determined, which is beneficial to saving transmission bits.

Mode 2: At least one first time domain offset is different from other first time domain offsets, and at least one first frequency domain offset is different from other first frequency domain offsets. The domain offset is the time domain offset between the data segments sent twice in the transmission block, and the first frequency domain offset is the frequency domain offset between the data segments sent twice in the transmission block. The first information also includes the time-frequency resource of the first data segment and the scheduling mode number, the scheduling mode number and the time domain offset of each second data segment relative to the first data segment and the relative value of each second data segment to the first data segment. The frequency domain offset of the first data segment has a mapping relationship, the first data segment is the first sent data segment of the transport block, and the second data segment is the data segment other than the first data segment of the transport block.

Correspondingly, the terminal device stores a mapping relationship between the scheduling mode number and the time domain offset of each second data segment relative to the first data segment and the frequency domain offset of each second data segment relative to the first data segment. . After the terminal device receives the first information, according to the scheduling mode number in the first information and the mapping relationship stored in the terminal device, the time domain offset of each second data segment relative to the first data segment and each second data segment can be determined. The frequency domain offset of the data segment relative to the first data segment. The terminal device can determine the second data segment according to the time-frequency resources of the first data segment, the time domain offset of the second data segment relative to the first data segment, and the frequency domain offset of the second data segment Time-frequency resources of the data segment.

For example, the access network device determines that the number of data segments to be divided into the transmission block is 3, and the time-frequency resources allocated by the access network device for data segments 1 to 3 are shown in FIG. 12 . As shown in FIG. 12 , the time domain resources and frequency domain resources of data segment 1, data segment 2 and data segment 3 are all different. The time domain offset between data segment 1 and data segment 2 is 2 symbols. The time domain offset between data segment 2 and data segment 3 is 3 symbols. The frequency domain offset between data segment 1 and data segment 2 is 30khz. The frequency domain offset between data segment 2 and data segment 3 is 40khz. That is, the time domain offset between data segment 1 and data segment 2 is not equal to the time domain offset between data segment 2 and data segment 3 . The frequency domain offset between data segment 1 and data segment 2 is not equal to the frequency domain offset between data segment 2 and data segment 3. The first information sent by the access network device to the terminal device includes the number of data segments to be divided into the transport block 3, the time-frequency resources of the data segment 1, and the scheduling mode number 1.

As shown in Table 1 below, both the access network device and the terminal device store the scheduling mode number, the time domain offset of each second data segment relative to the first data segment, and the time domain offset of each second data segment relative to the first data segment. The mapping relationship of frequency domain offsets. Among them, scheduling mode number 1 corresponds to the time domain offset of data segment 2 relative to data segment 1 (that is, 2 symbols), the time domain offset of data segment 3 relative to data segment 1 (that is, 5 symbols), the data segment The frequency domain offset of segment 2 relative to data segment 1 (ie, 30khz), and the frequency domain offset of data segment 3 relative to data segment 1 (ie, 70khz). Scheduling mode number 2 corresponds to the time domain offset of data segment 2 relative to data segment 1 (that is, 4 symbols), the time domain offset of data segment 3 relative to data segment 1 (that is, 6 symbols), data segment 2 The frequency domain offset relative to the data segment 1 (ie 40khz), the frequency domain offset of the data segment 3 relative to the data segment 1 (ie 70khz). Scheduling mode number 3 corresponds to the time domain offset of data segment 2 relative to data segment 1 (that is, 3 symbols), the time domain offset of data segment 3 relative to data segment 1 (that is, 7 symbols), data segment 2 The frequency domain offset relative to the data segment 1 (ie 50khz), the frequency domain offset of the data segment 3 relative to the data segment 1 (ie 80khz).

Table 1

As shown in Figure 12, since the time domain offset of data segment 2 relative to data segment 1 is 2 symbols, the time domain offset of data segment 3 relative to data segment 1 is 5 symbols, and the time domain offset of data segment 2 relative to data segment 1 is 5 symbols. The frequency domain offset of data segment 1 is 30khz, and the frequency domain offset of data segment 3 relative to data segment 1 is 70khz. Therefore, the access network device carries the number of data segments to be divided into the transport block (ie, 3), the time-frequency resources of data segment 1, and the scheduling mode number 1 in the first information. After receiving the first information from the access network device, the terminal device obtains, according to the mapping relationship in Table 1 above, the time domain offset of the data segment 2 corresponding to the scheduling mode number 1 relative to the data segment 1, and the time domain offset of the data segment 3 relative to the data segment The time domain offset of 1, the frequency domain offset of data segment 2 relative to data segment 1, and the frequency domain offset of data segment 3 relative to data segment 1. The terminal device determines the time-frequency resources of data segment 2 according to the time-frequency resources of data segment 1, the time-domain offset of data segment 2 relative to data segment 1, and the frequency domain offset of data segment 2 relative to data segment 1. Time domain resources of data segment 2=frequency domain resources of data segment 1+2 symbols. Frequency domain resources of data segment 2=frequency domain resources of data segment 1+30khz. The terminal device determines the time-frequency resources of data segment 3 according to the time-frequency resources of data segment 1, the time-domain offset of data segment 3 relative to data segment 1, and the frequency domain offset of data segment 3 relative to data segment 1. Time domain resources of data segment 3=frequency domain resources of data segment 1+5 symbols. Frequency domain resources of data segment 3=frequency domain resources of data segment 1+70khz.

Certainly, multiple mapping relation tables may be stored in the terminal device and the access network device. The number of data segments to be divided for different transport blocks corresponds to different mapping relation tables. For example, when the number of data segments to be divided into the transmission block is 3, the corresponding mapping relationship table may be the above Table 1. When the number of data segments to be divided into the transmission block is 4, the corresponding mapping relationship table may be Table 2 below.

Table 2

As shown in FIG. 12 , the access network device determines that the number of data segments to be divided into the transmission block is 3. Therefore, the access network device obtains the corresponding scheduling mode number 1 from the mapping relationship in Table 1 and carries it in the first information. After the terminal device receives the first information, since the number of data segments to be divided into the transport block carried in the first information is 3, the terminal device obtains the time domain offset and frequency domain offset corresponding to the scheduling mode number 1 from Table 1. quantity.

Alternatively, the access network device and the terminal device only include one mapping relationship table, and the mapping relationship table is a general table. For example, if the maximum number of data segments to be divided into a transport block is 4, the mapping relationship table included in the access network device and the terminal device may be as shown in Table 2. As shown in FIG. 12 , the access network device determines that the number of data segments to be divided into the transport block is three. The time domain offset of data segment 2 relative to data segment 1 is 2 symbols, and the time domain offset of data segment 3 relative to data segment 1 is 5 symbols. The frequency domain offset of data segment 2 relative to data segment 1 is 30khz, and the frequency domain offset of data segment 3 relative to data segment 1 is 70khz. Therefore, the access network device obtains the corresponding scheduling mode number 1 from the mapping relationship in Table 2 and carries it in the first information. After the terminal device receives the first information, since the number of data segments to be divided into the transmission block carried in the first information is 3, the terminal device only obtains the data segment 2 corresponding to the scheduling mode number 1 from Table 2 relative to the data segment 1. Time domain offset, time domain offset of data segment 3 relative to data segment 1, frequency domain offset of data segment 2 relative to data segment 1, and frequency domain offset of data segment 3 relative to data segment 1 . The terminal device determines the time-frequency resource of the data segment according to the acquired time-domain offset and frequency-domain offset.

Based on the second method, the access network device does not directly notify the time-frequency resource of each data segment, but only needs to send the time-frequency resource and scheduling method number of the first data segment, and the terminal device can determine the time-frequency resource of each data segment. Conducive to saving transmission bits.

Mode 3: At least one first time domain offset is different from other first time domain offsets, and at least one first frequency domain offset is different from other first frequency domain offsets. The domain offset is the time domain offset between the data segments sent twice in the transmission block, and the first frequency domain offset is the frequency domain offset between the data segments sent twice in the transmission block. Shift amount, the first information further includes the time-frequency resource and scheduling mode number of the first data segment, the scheduling mode number and modulation and coding scheme (modulation and coding scheme, MCS) information, and the relative value of each second data segment relative to the first data segment. The time domain offset and the frequency domain offset of each second data segment relative to the first data segment have a mapping relationship, the first data segment is the first sent data segment of the transport block, and the second data segment is the transport block of data segments other than the first data segment.

The MCS information may include one or more of modulation order, spectral efficiency and target code rate.

Correspondingly, the terminal device stores the scheduling mode number and MCS information, the time domain offset of each second data segment relative to the first data segment, and the frequency domain offset of each second data segment relative to the first data segment. mapping relationship. After the terminal device receives the first information, according to the scheduling mode number in the first information and the mapping relationship stored in the terminal device, the MCS information, the time domain offset of each second data segment relative to the first data segment, and the The frequency domain offset of each second data segment relative to the first data segment. The terminal device can determine the second data segment according to the time-frequency resources of the first data segment, the time domain offset of the second data segment relative to the first data segment, and the frequency domain offset of the second data segment Time-frequency resources of the data segment.

For example, the access network device determines that the number of data segments to be divided into the transmission block is 3, and the time-frequency resources allocated by the access network device for data segments 1 to 3 are shown in FIG. 12 . As shown in FIG. 12 , the time domain resources and frequency domain resources of data segment 1, data segment 2 and data segment 3 are all different. The time domain offset between data segment 1 and data segment 2 is 2 symbols. The time domain offset between data segment 2 and data segment 3 is 3 symbols. The frequency domain offset between data segment 1 and data segment 2 is 30khz. The frequency domain offset between data segment 2 and data segment 3 is 50khz. That is, the time domain offset between data segment 1 and data segment 2 is not equal to the time domain offset between data segment 2 and data segment 3 . The frequency domain offset between data segment 1 and data segment 2 is not equal to the frequency domain offset between data segment 2 and data segment 3.

As shown in Table 3 below, both the access network device and the terminal device store the scheduling mode number and MCS information, the time domain offset of each second data segment relative to the first data segment, and the relative value of each second data segment to the first data segment. The mapping relationship of the frequency domain offset of the data segment. As shown in Figure 12, the time domain offset of data segment 2 relative to data segment 1 is 2 symbols, the time domain offset of data segment 3 relative to data segment 1 is 5 symbols, and the time domain offset of data segment 2 relative to data segment 1 is 5 symbols. The frequency domain offset of segment 1 is 30khz, and the frequency domain offset of data segment 3 relative to data segment 1 is 70khz. If the modulation order is 2, the target code rate is 308, and the spectral efficiency is 0.6016, the first information sent by the access network device to the terminal device includes the number of data segments to be divided into the transport block (ie, 3), the time of data segment 1 Frequency resource and scheduling mode number 1. After receiving the first information from the access network device, the terminal device obtains, according to the mapping relationship in Table 3, the MCS information corresponding to the scheduling mode number 1, the time domain offset of the data segment 2 relative to the data segment 1, and the data segment 3 relative to the data segment 1. The time domain offset of data segment 1, the frequency domain offset of data segment 2 relative to data segment 1, and the frequency domain offset of data segment 3 relative to data segment 1. The terminal device determines the time-frequency resources of data segment 2 according to the time-frequency resources of data segment 1, the time-domain offset of data segment 2 relative to data segment 1, and the frequency domain offset of data segment 2 relative to data segment 1. The terminal device determines the time-frequency resources of data segment 3 according to the time-frequency resources of data segment 1, the time-domain offset of data segment 3 relative to data segment 1, and the frequency domain offset of data segment 3 relative to data segment 1.

table 3

Of course, the terminal equipment and the access network equipment may store information with the scheduling mode number and MCS, the time domain offset of each second data segment relative to the first data segment, and the time domain offset of each second data segment relative to the first data segment. Multiple mapping relationship tables for the mapping relationship of frequency domain offsets. The number of data segments to be divided for different transport blocks corresponds to different mapping relation tables. For the specific implementation principle of the different mapping relationship tables corresponding to the number of data segments to be divided into different transport blocks, reference may be made to the corresponding description in the foregoing manner 2, which is not repeated here.

Alternatively, the terminal device and the access network device may store information including the scheduling mode number and MCS information, the time domain offset of each second data segment relative to the first data segment, and the time domain offset of each second data segment relative to the first data segment. A mapping relationship table of the mapping relationship of frequency domain offsets, and the mapping relationship table is a general table. For the specific implementation principle of the general table, reference may be made to the corresponding description in the above-mentioned Mode 2, which is not repeated here.

Based on method 3, the access network device does not directly notify the time-frequency resource of each data segment, but only needs to send the time-frequency resource and scheduling mode number of the first data segment, and the terminal device can determine the time-frequency resource of each data segment. Conducive to saving transmission bits.

1003. The access network device segments the transport block to obtain multiple data segments of the transport block.

In this embodiment of the present application, step 1001 may be performed before step 1003 , or step 1001 may be performed after step 1003 . After the access network device determines the number of data segments to be divided into the transport block, the access network device segments the transport block to obtain multiple data segments of the transport block. For example, the access network device pre-determines that the number of data segments divided into the transport block is three. After the access network device sends the first information, it divides the transport block to obtain three data segments of the transport block. Alternatively, the access network device first divides the transport block to obtain three data segments of the transport block, and then sends the first information to the terminal device.

1004. The access network device sends the multiple data segments to the terminal device.

In the embodiment of the present application, after obtaining the multiple data segments of the transmission block, the access network device specifically sends each data segment on the time-frequency resources of each data segment allocated in advance. Wherein, the time domain resources of different data segments in the multiple data segments are not the same, and the time domain distribution of the multiple data segments is discontinuous, and/or the frequency domain resources of different data segments in the multiple data segments are different, and the distribution of the multiple data segments is discontinuous in the frequency domain.

Wherein, step 1001 is performed before step 1004, that is, the first information is sent first, and then the multiple data segments are sent.

1005. The terminal device synthesizes the multiple data segments into a transport block.

In this embodiment of the present application, after determining the time-frequency resources of each data segment of the transmission block according to the first information, the terminal device receives the time-frequency resources of the transmission block from the access network device according to the number of data segments and the time-frequency resources of each data segment of the transmission block. multiple data segments. After receiving the multiple data segments, the terminal device synthesizes the multiple data segments into a transport block.

The specific implementation of step 1003 and step 1005 may refer to the description of the above-mentioned steps 201 to 203, and details are not repeated here.

It can be seen that, by implementing the method described in FIG. 10 , because the time domain resources of the multiple data segments of the transport block are different, and the multiple data segments are not consecutively distributed in the time domain, and/or, the multiple data segments of the transport block have different time domain resources. The frequency domain resources are different, and the distribution of the multiple data segments in the frequency domain is discontinuous. Therefore, the terminal device can obtain the time-domain diversity gain and/or the frequency-domain diversity gain, which is beneficial for the terminal device to successfully decode the transport block. In addition, the access network device may also send the first information to the terminal device in advance to notify the terminal device of the number of data segments to be divided into the transmission block and the time-frequency resources of each data segment of the transmission block, so that the terminal device can successfully receive the transmission block. data segment.

Referring to FIG. 13 , FIG. 13 is a schematic flowchart of another data transmission method provided by an embodiment of the present application. 13 , the first device is an access network device and the second device is a terminal device as an example. The application scenario of FIG. 13 is the downlink transmission application scenario of the transport block. As shown in FIG. 13, the data transmission method includes the following steps 1301-1304, wherein:

1301. The access network device sends first information to the terminal device.

Wherein, the first information includes the number of data segments divided by the transport block and the range of time-frequency resources.

That is to say, the access network device needs to determine the number of data segments divided into the transport block, and determine the time-frequency resource range of each data segment of the transport block. After the access network device determines the number of the data segments and the time-frequency resource range of each data segment of the transport block, it sends the first information to the terminal device. Optionally, the first information may be downlink control information (downlink control information, DCI), or other information.

As an optional implementation manner, the access network device determines the number of data segments to be divided into the transport block according to the channel quality or transmission delay requirement of the PDSCH. Based on this implementation, it is possible to flexibly determine the number of data segments that the transport block needs to be divided into.

1302. The access network device segments the transport block to obtain multiple data segments of the transport block.

Wherein, step 1301 may be performed before step 1302 , or step 1301 may be performed after step 1302 .

1303. The access network device sends the multiple data segments to the terminal device within the time-frequency resource range.

Wherein, the time domain resources of different data segments in the multiple data segments are not the same, and the time domain distribution of the multiple data segments is discontinuous, and/or the frequency domain resources of different data segments in the multiple data segments are different, and the distribution of the multiple data segments is discontinuous in the frequency domain.

Wherein, step 1303 is executed after step 1302 and step 1301.

1304. The terminal device synthesizes the multiple data segments into a transport block.

Specifically, after receiving the first information, the terminal device receives multiple data segments of the transport block from the first device in the time-frequency resource range according to the number of data segments, that is, the terminal device performs processing on the multiple data segments in the time-frequency resource range. Blind inspection. After the terminal device receives the multiple data segments, the terminal device synthesizes the multiple data segments into a transport block.

Since multiple data segments of the transport block need to be sent, if the time-frequency resource of each data segment needs to be notified to the terminal device, the access network device needs to use a lot of bits of information to notify the terminal device of the time-frequency resource of each data segment. By implementing the method described in FIG. 13 , the access network device does not need to notify the terminal device of the time-frequency resources of each data segment, and the access network device only needs to notify the terminal device of the time-frequency resources where multiple data segments of the transport block are located. scope. The terminal device can successfully receive the multiple data segments by blindly detecting the multiple data segments within the time-frequency resource range. Therefore, by implementing the method described in FIG. 13, it is advantageous to save transmission bits.

Referring to FIG. 14 , FIG. 14 is a schematic flowchart of another data transmission method provided by an embodiment of the present application. 14 takes the first device as a terminal device and the second device as an access network device as an example. The application scenario of FIG. 14 is an application scenario of uplink transmission of transport blocks. As shown in FIG. 14, the data transmission method includes the following steps 1401-1405, wherein:

1401. The access network device sends first information to the terminal device.

The first information includes the number of data segments divided by the transport block, and the first information is also used by the terminal device to determine the time-frequency resources of each data segment of the transport block.

That is, the access network device needs to determine the number of data segments to be divided into the transport block, and allocate time-frequency resources for each data segment of the transport block. After the access network device determines the number of the data segments and allocates time-frequency resources for each data segment of the transport block, it sends the first information to the terminal device. Optionally, the first information may be downlink control information (downlink control information, DCI), or other information.

As an optional implementation manner, the access network device determines the number of data segments to be divided into the transmission block according to the channel quality or transmission delay requirement of the PUSCH. Based on this implementation, it is possible to flexibly determine the number of data segments that the transport block needs to be divided into.

1402. The terminal device determines, according to the first information, time-frequency resources of each data segment of the transport block.

In the embodiment of the present application, after receiving the first information from the access network device, the terminal device determines the time-frequency resources of each data segment of the transmission block according to the first information.

The access network device may indicate the time-frequency resources of each data segment of the terminal device transmission block in the following manners.

Mode 1: Any two first time-domain offsets are the same, and any two first frequency-domain offsets are the same, and the first time-domain offset is the difference between the two adjacent data segments of the transmission block. Time-domain offset, the first frequency-domain offset is the frequency-domain offset between two adjacent data segments of the transport block, and the first information further includes the time-frequency resources of the first data segment, the first A time domain offset and a first frequency domain offset, where the first data segment is the first transmitted data segment of the transport block.

Correspondingly, the terminal device may determine the time-frequency resource of the second transmitted data segment according to the time-frequency resource of the first data segment, the first time-domain offset, and the first frequency-domain offset. The terminal device may determine the time-frequency resource of the third data segment sent according to the time-frequency resource, the first time-domain offset, and the first frequency-domain offset of the second sent data segment. By analogy, the time-frequency resource of the next data segment can be determined according to the time-frequency resource, the first time-domain offset and the first frequency-domain offset of the previous data segment.

Based on the first method, the access network device does not directly notify the video resources of each data segment, but only needs to send the time-frequency resources, the first time-domain offset and the first frequency-domain offset of the first data segment. The time-frequency resources of each data segment can be determined, which is beneficial to saving transmission bits.

Mode 2: At least one first time domain offset is different from other first time domain offsets, and at least one first frequency domain offset is different from other first frequency domain offsets. The domain offset is the time domain offset between the data segments sent twice in the transmission block, and the first frequency domain offset is the frequency domain offset between the data segments sent twice in the transmission block. The first information also includes the time-frequency resource of the first data segment and the scheduling mode number, the scheduling mode number and the time domain offset of each second data segment relative to the first data segment and the relative value of each second data segment to the first data segment. The frequency domain offset of the first data segment has a mapping relationship, the first data segment is the first sent data segment of the transport block, and the second data segment is the data segment other than the first data segment of the transport block.

Correspondingly, the terminal device stores a mapping relationship between the scheduling mode number and the time domain offset of each second data segment relative to the first data segment and the frequency domain offset of each second data segment relative to the first data segment. . After the terminal device receives the first information, according to the scheduling mode number in the first information and the mapping relationship stored in the terminal device, the time domain offset of each second data segment relative to the first data segment and each second data segment can be determined. The frequency domain offset of the data segment relative to the first data segment. The terminal device can determine the second data segment according to the time-frequency resources of the first data segment, the time domain offset of the second data segment relative to the first data segment, and the frequency domain offset of the second data segment Time-frequency resources of the data segment.

Based on method 2, the access network device does not directly notify the video resources of each data segment, but only needs to send the time-frequency resource and scheduling mode number of the first data segment, and the terminal device can determine the time-frequency resource of each data segment. Conducive to saving transmission bits.

Mode 3: At least one first time domain offset is different from other first time domain offsets, and at least one first frequency domain offset is different from other first frequency domain offsets. The domain offset is the time domain offset between the data segments sent twice in the transmission block, and the first frequency domain offset is the frequency domain offset between the data segments sent twice in the transmission block. Shift amount, the first information further includes the time-frequency resource and scheduling mode number of the first data segment, the scheduling mode number and modulation and coding scheme (modulation and coding scheme, MCS) information, and the relative value of each second data segment relative to the first data segment. The time domain offset and the frequency domain offset of each second data segment relative to the first data segment have a mapping relationship, the first data segment is the first sent data segment of the transport block, and the second data segment is the transport block of data segments other than the first data segment.

The MCS information may include one or more of modulation order, spectral efficiency and target code rate.

Correspondingly, the terminal device stores the scheduling mode number and MCS information, the time domain offset of each second data segment relative to the first data segment, and the frequency domain offset of each second data segment relative to the first data segment. mapping relationship. After the terminal device receives the first information, according to the scheduling mode number in the first information and the mapping relationship stored in the terminal device, the MCS information, the time domain offset of each second data segment relative to the first data segment, and the The frequency domain offset of each second data segment relative to the first data segment. The terminal device can determine the second data segment according to the time-frequency resources of the first data segment, the time domain offset of the second data segment relative to the first data segment, and the frequency domain offset of the second data segment Time-frequency resources of the data segment.

In the embodiment corresponding to FIG. 14 , the specific implementation principles of the three ways in which the access network device instructs the time-frequency resources of each data segment of the terminal device transmission block is the same as that in the embodiment corresponding to FIG. 10 , the access network device instructing the terminal device The specific implementation principles of the three manners of the time-frequency resources of each data segment of the transport block are the same, and are not described here by examples.

Based on method 3, the access network device does not directly notify the video resources of each data segment, but only needs to send the time-frequency resource and scheduling mode number of the first data segment, and the terminal device can determine the time-frequency resource of each data segment. Conducive to saving transmission bits.

1403. The terminal device segments the transport block according to the number of data segments carried by the first information, to obtain multiple data segments of the transport block.

In this embodiment of the present application, after receiving the first information from the access network device, the terminal device segments the transmission block according to the number of data segments carried by the first information, to obtain multiple data segments of the transmission block.

Wherein, step 1402 may be performed before step 1403 , or step 1402 may be performed after step 1403 .

1404. The terminal device sends the multiple data segments to the access network device according to the determined time-frequency resources of each data segment.

Wherein, the time domain resources of different data segments in the multiple data segments are not the same, and the time domain distribution of the multiple data segments is discontinuous, and/or the frequency domain resources of different data segments in the multiple data segments are different, and the distribution of the multiple data segments is discontinuous in the frequency domain.

Wherein, step 1404 is executed after step 1402 and step 1403 .

1405. The access network device synthesizes the multiple data segments into a transport block.

In the embodiment of the present application, after receiving the multiple data segments from the terminal device, the access network device synthesizes the multiple data segments into a transmission block.

It can be seen that, by implementing the method described in FIG. 14 , because the time domain resources of the multiple data segments of the transport block are different, and the multiple data segments are not continuously distributed in the time domain, and/or, the multiple data segments of the transport block have different time domain resources. The frequency domain resources are different, and the distribution of the multiple data segments in the frequency domain is discontinuous. Therefore, the access network device can obtain the time-domain diversity gain and/or the frequency-domain diversity gain, which is beneficial for the access network device to successfully decode the transport block. In addition, the access network device can also send the first information to the terminal device in advance to notify the terminal device of the number of data segments to be divided into the transmission block and the time-frequency resources of each data segment of the transmission block, so that the terminal device can transmit data according to the number of data segments. The blocks are divided into data segments, and the multiple data segments are sent according to the time-frequency resources of the respective data segments of the transport block.

Referring to FIG. 15 , FIG. 15 is a schematic flowchart of another data transmission method provided by an embodiment of the present application. 15 , the first device is a terminal device and the second device is an access network device as an example. The application scenario of FIG. 15 is an application scenario of uplink transmission of transport blocks. As shown in FIG. 15, the data transmission method includes the following steps 1501-1504, wherein:

1501. The access network device sends first information to the terminal device.

Wherein, the first information includes the number of data segments divided by the transport block and the range of time-frequency resources.

That is, the access network device needs to determine the number of data segments to be divided into the transport block, and allocate time-frequency resource ranges for each data segment of the transport block. After the access network device determines the number of the data segments and allocates time-frequency resource ranges for each data segment of the transport block, it sends the first information to the terminal device. Optionally, the first information may be downlink control information (downlink control information, DCI), or other information.

As an optional implementation manner, the access network device determines the number of data segments to be divided into the transmission block according to the channel quality or transmission delay requirement of the PUSCH. Based on this implementation, it is possible to flexibly determine the number of data segments that the transport block needs to be divided into.

1502. The terminal device segments the transport block according to the number of data segments to obtain multiple data segments of the transport block.

In the embodiment of the present application, after receiving the first information from the access network device, the terminal device segments the transmission block according to the number of the data segments to obtain multiple data segments of the transmission block.

1503. The terminal device sends the multiple data segments to the access network device within the time-frequency resource range.

Wherein, the time domain resources of different data segments in the multiple data segments are not the same, and the time domain distribution of the multiple data segments is discontinuous, and/or the frequency domain resources of different data segments in the multiple data segments are different, and the distribution of the multiple data segments is discontinuous in the frequency domain.

1504. The access network device synthesizes the multiple data segments into a transport block.

In the embodiment of the present application, the access network device receives multiple data segments of the transport block from the terminal device within the time-frequency resource range according to the number of data segments, that is, the access network device performs blind detection on the multiple data segments within the time-frequency resource range . After the access network device receives the multiple data segments, the access network device synthesizes the multiple data segments into a transport block.

By implementing the method described in FIG. 15, it is advantageous to save bit information.

Referring to FIG. 16 , FIG. 16 is a schematic flowchart of another data transmission method provided by an embodiment of the present application. As shown in Figure 16, the data transmission method includes the following steps 1601-1603, wherein:

1601. The first device acquires a transport block to be sent.

The first device may be an access network device or a terminal device. When the first device is an access network device, the second device is a terminal device. When the first device is a terminal device, the second device is an access network device. When the first device is an access network device and the second device is a terminal device, the transport block is a transport block used for downlink transmission. When the first device is a terminal device and the second device is an access network device, the transport block is a transport block used for uplink transmission.

1602. The first device sends multiple copies of the transport block to the second device.

In this embodiment of the present application, after the first device acquires the transmission block to be sent, the first device sends multiple copies of the same transmission block to the second device. For example, if the transport block to be sent is transport block 1, the first device sends multiple copies of transport block 1 to the second device.

Wherein, the time domain resources of each transport block are different, and the multiple transport blocks are not continuously distributed in the time domain, and/or, the frequency domain resources of each transport block are different, and the multiple transport blocks are not distributed in the frequency domain. continuous.

For example, it is assumed that the time domain resources of each transport block are different, and the multiple transport blocks are not consecutively distributed in the time domain. Suppose the first device sends 3 copies of transport block 1 to the second device. Wherein, that the distribution of the multiple transport blocks in the time domain is discontinuous may mean that the multiple transport blocks are completely discontinuous in the time domain. As shown in FIG. 17 , the time domain resources of the three transport blocks 1 are different, and the three transport blocks 1 are completely discontinuous in the time domain. Alternatively, the distribution of the multiple transport blocks is discontinuous in the time domain may mean that the multiple transport blocks are partially discontinuous in the time domain. As shown in FIG. 18 , the time domain resources of the three transport block 1s are different, and the time domain resources of the three transport block 1s are partially discontinuous.

For example, it is assumed that the frequency domain resources of each transport block are different, and the distribution of the multiple transport blocks in the frequency domain is discontinuous as an example. Suppose the first device sends 3 copies of transport block 1 to the second device. Wherein, that the distribution of the multiple transmission blocks in the frequency domain is discontinuous may refer to that the multiple transmission blocks are completely discontinuous in the frequency domain. As shown in FIG. 19 , the frequency domain resources of the three transport blocks 1 are different, and the three transport blocks 1 are completely discontinuous in the frequency domain. Alternatively, the distribution of the multiple transport blocks in the frequency domain is discontinuous may mean that the multiple transport blocks are partially discontinuous in the frequency domain. As shown in FIG. 20 , the frequency domain resources of the three transport blocks 1 are different, and the three transport blocks 1 are discontinuous in the frequency domain.

For example, the time domain resources of each transport block are different, and the multiple transport blocks are discontinuous in the time domain, the frequency domain resources of each transport block are different, and the multiple transport blocks are discontinuous in the frequency domain. . Suppose the first device sends 3 copies of transport block 1 to the second device. As shown in FIG. 21 , the time domain resources of the three transport block 1s are different, and the frequency domain resources of the three transport block 1s are different. The three transport blocks 1 are discontinuous in both the time and frequency domains. The distribution of the multiple transport blocks in the time domain is discontinuous may refer to that the multiple transport blocks are completely discontinuous in the time domain, or the multiple transport blocks are partially discontinuous in the time domain. The distribution of the multiple transport blocks in the frequency domain is discontinuous may mean that the multiple transport blocks are completely discontinuous in the frequency domain, or the multiple transport blocks are partially discontinuous in the frequency domain. Figure 21 takes as an example that multiple transport blocks are completely discontinuous in the time and frequency domains.

1603. The second device merges the multiple transmission blocks.

In this embodiment of the present application, after receiving multiple copies of the same transmission block from the first device, the second device combines the multiple copies of the transmission block. Optionally, each time the second device receives a transmission block, it performs a combination. For example, after receiving the first copy of Transport Block 1, the second device stores the first copy of Transport Block 1. When receiving the second transmission block 1, the second device combines the first transmission block 1 and the second transmission block 1. When the second device receives the third transmission block 1, it combines the transmission block obtained by uploading and combining with the third transmission block 1. Alternatively, the second device may also combine all the transport blocks of the same transport block sent by the first device after receiving them. For example, the first device sent 3 copies of Transport Block 1. After receiving the three transmission blocks 1, the second device performs merging.

As an optional implementation manner, when the second device successfully decodes the combined transport block, it sends an acknowledgment (Acknowledgement, ACK) message to the first device, where the combined transport block is a transmission block obtained by combining M received transport blocks block, M is less than or equal to the number of transmissions N of the transport block. That is to say, in this embodiment, the second device does not necessarily receive all the transport blocks sent by the first device. For example, the first device sends 4 copies of Transport Block 1. After the second device combines the three transport blocks 1 to obtain the combined transport block, if the second device can successfully decode the combined transport block, the second device may not receive the fourth transport block 1 . Based on this embodiment, the transport block can be decoded quickly and accurately.

It can be seen that, by implementing the method described in FIG. 16, since the time domain resources of the multiple transport blocks are different, and the multiple transport blocks are not continuously distributed in the time domain, and/or the frequency domain resources of the multiple transport blocks are different, And the distribution of the multiple transmission blocks is discontinuous in the frequency domain. Therefore, the second device can obtain the time-domain diversity gain and/or the frequency-domain diversity gain, which is beneficial for the second device to successfully decode the transport block.

Please refer to FIG. 22, which is a schematic flowchart of a data transmission method provided by an embodiment of the present application. 22, the first device is an access network device and the second device is a terminal device as an example. The application scenario of FIG. 22 is the downlink transmission application scenario of the transport block. As shown in FIG. 22, the data transmission method includes the following steps 2201-2205, wherein:

2201. The access network device sends first information to the terminal device.

The first information includes the number of transmission blocks sent, and the first information is also used by the second device to determine the time-frequency resources of each transmission block.

That is, the access network device needs to determine the number of transmission blocks to be sent, and determine the time-frequency resources allocated to each transmission block. After the access network device determines the number of transmission shares and the time-frequency resources of each transmission block, the access network device sends the first information to the terminal device. Optionally, the first information may be downlink control information (downlink control information, DCI), or other information.

As an optional implementation manner, the first device determines the number of transmission blocks to be sent according to the channel quality of the physical downlink shared channel PDSCH. Based on this implementation, the number of transmission shares of a transport block can be determined flexibly. For example, if the channel quality of the PDSCH is good, the number of transmissions of the transport block may be less. If the channel quality of the PDSCH is poor, the number of transmission blocks can be larger. The more transmission blocks are transmitted, the more time-domain diversity gain and/or frequency-domain diversity gain can be obtained. Data decoding failure rate.

2202. The terminal device determines the time-frequency resources of each transport block according to the first information.

In the embodiment of the present application, after receiving the first information from the access network device, the terminal device determines the time-frequency resource of each transmission block according to the first information.

Wherein, the access network device may indicate the time-frequency resources of each transport block to the terminal device in the following manners.

Mode 1: Any two first time domain offsets are the same, any two first frequency domain offsets are the same, and the first time domain offset is the time domain offset between two adjacent transmission blocks sent The first frequency domain offset is the frequency domain offset between two adjacent transmission blocks sent, and the first information also includes the time-frequency resources of the first transmission block, the first time domain offset amount and the first frequency domain offset.

Correspondingly, the terminal device may determine the time-frequency resource of the transport block sent for the second time according to the time-frequency resource, the first time-domain offset, and the first frequency-domain offset of the transport block sent for the first time. The terminal device may determine the time-frequency resource of the transport block sent for the third time according to the time-frequency resource, the first time-domain offset, and the first frequency-domain offset of the transport block sent for the second time. By analogy, the time-frequency resource of the next transport block can be determined according to the time-frequency resource of the previous transport block, the first time-domain offset, and the first frequency-domain offset.

The specific implementation principle of the first mode is similar to the specific implementation principle of the first mode in the embodiment described in FIG. 10 , and will not be described herein again.

Based on method 1, the access network device does not directly notify the time-frequency resources of each transport block, but only needs to send the time-frequency resources, the first time-domain offset, and the first frequency-domain offset of the transport block sent for the first time. , the terminal device can determine the time-frequency resources of each transmission block, which is beneficial to saving transmission bits.

Mode 2: At least one first time domain offset is different from other first time domain offsets, and at least one first frequency domain offset is different from other first frequency domain offsets. The domain offset is the time-domain offset between the transmission blocks sent twice adjacently, the first frequency-domain offset is the frequency-domain offset between the transmission blocks sent twice adjacently, and the first information It also includes the time-frequency resource and scheduling mode number of the first transport block, the scheduling mode number and the time domain offset of each second transport block relative to the first transport block and the frequency of each second transport block relative to the first transport block. The domain offsets have a mapping relationship, the first transport block is the transport block sent for the first time, and the second transport block is the transport block sent except the first transport block.

Correspondingly, the terminal device stores the mapping relationship between the scheduling mode number and the time domain offset of each second transmission block relative to the first transmission block and the frequency domain offset of each second transmission block relative to the first transmission block. . After the terminal device receives the first information, according to the scheduling mode number in the first information and the mapping relationship stored in the terminal device, the time domain offset of each second transmission block relative to the first transmission block and the time domain offset of each second transmission block can be determined. The frequency domain offset of the transport block relative to the first transport block. The terminal device may determine the second transmission block according to the time-frequency resources of the first transmission block, the time domain offset of the second transmission block relative to the first transmission block, and the frequency domain offset of the second transmission block relative to the first transmission block. The time-frequency resource of the transport block. For example, if the access network device sends three copies of transport block 1 to the terminal device, the first copy of transport block 1 is the first transport block. The second share of transport block 1 and the third share of transport block 1 are the second transport block.

Certainly, multiple mapping relation tables may be stored in the terminal device and the access network device. The number of sent copies of different transport blocks corresponds to different mapping relation tables. Alternatively, only one mapping relationship table may be stored in the terminal device and the access network device.

The specific implementation principle of the second mode is similar to the specific implementation principle of the second mode in the embodiment described in FIG. 10 , and will not be described herein again.

Based on the second method, the access network device does not directly notify the time-frequency resource of each transmission block, but only needs to send the time-frequency resource and scheduling mode number of the first transmission block, and the terminal device can determine the time-frequency resource of each transmission block. Conducive to saving transmission bits.

Mode 3: At least one first time domain offset is different from other first time domain offsets, and at least one first frequency domain offset is different from other first frequency domain offsets. The domain offset is the time-domain offset between the transmission blocks sent twice adjacently, the first frequency-domain offset is the frequency-domain offset between the transmission blocks sent twice adjacently, and the first information It also includes the time-frequency resource and scheduling mode number of the first transport block, the scheduling mode number and MCS information, the time domain offset of each second transport block relative to the first transport block, and the time domain offset of each second transport block relative to the first transport block. The frequency domain offsets of the blocks have a mapping relationship, the first transport block is the transport block sent for the first time, and the second transport block is the transport block sent except the first transport block.

The MCS information may include one or more of modulation order, spectral efficiency and target code rate.

Correspondingly, the terminal device stores the scheduling mode number and MCS information, the time domain offset of each second transport block relative to the first transport block, and the frequency domain offset of each second transport block relative to the first transport block. mapping relationship. After the terminal device receives the first information, according to the scheduling mode number in the first information and the mapping relationship stored in the terminal device, the MCS information, the time domain offset of each second transmission block relative to the first transmission block, and the The frequency domain offset of each second transport block relative to the first transport block. The terminal device may determine the second transmission block according to the time-frequency resources of the first transmission block, the time domain offset of the second transmission block relative to the first transmission block, and the frequency domain offset of the second transmission block relative to the first transmission block. The time-frequency resource of the transport block.

Certainly, multiple mapping relation tables may be stored in the terminal device and the access network device. The number of sent copies of different transport blocks corresponds to different mapping relation tables. Alternatively, only one mapping relationship table may be stored in the terminal device and the access network device.

The specific implementation principle of the third mode is similar to the specific implementation principle of the third mode in the embodiment described in FIG. 10 , and will not be described herein again.

Based on the third method, the access network device does not directly notify the time-frequency resources of each transport block, but only needs to send the time-frequency resources of the first transport block and the scheduling mode number, and the terminal device can determine the time-frequency resources of each transport block. Conducive to saving transmission bits.

2203. The access network device acquires the transport block to be sent.

Wherein, step 2203 may be performed before step 2201 , or step 2203 may be performed after step 2201 .

2204. The access network device sends multiple copies of the transmission block to the terminal device according to the number of transmissions and the time-frequency resources of each transmission block.

Wherein, step 2204 is executed after step 2203 and step 2201.

2205. The terminal device combines multiple transmission blocks.

In this embodiment of the present application, after the terminal device determines the time-frequency resources of each transmission block according to the first information, the terminal device receives multiple copies of the same transmission block from the first device according to the number of transmissions and the time-frequency resources of each transmission block. After the terminal device receives the multiple transmission blocks, the terminal device combines the multiple transmission blocks.

It can be seen that, by implementing the method described in FIG. 22 , the terminal equipment can obtain the time-domain diversity gain and/or the frequency-domain diversity gain, which is beneficial for the terminal equipment to successfully decode the transport block. In addition, the access network device may also send the first information to the terminal device in advance to notify the terminal device of the number of transmission blocks to be sent and the time-frequency resources of each transmission block, so that the terminal device can successfully receive the transmission block.

Referring to FIG. 23, FIG. 23 is a schematic flowchart of another data transmission method provided by an embodiment of the present application. 23 , the first device is an access network device and the second device is a terminal device as an example. The application scenario of FIG. 23 is the downlink transmission application scenario of the transport block. As shown in FIG. 23, the data transmission method includes the following steps 2301-2304, wherein:

2301. The access network device sends first information to the terminal device.

Wherein, the first information includes the number of transmission blocks and the range of time-frequency resources.

That is to say, the access network device needs to determine the number of transmission blocks to be sent, and determine the time-frequency resources of each transmission block. After the access network device determines the number of transmission shares and the time-frequency resources of each transmission block, the access network device sends the first information to the terminal device. Optionally, the first information may be downlink control information (downlink control information, DCI), or other information.

As an optional implementation manner, the first device determines the number of transmission blocks to be sent according to the channel quality of the physical downlink shared channel PDSCH. Based on this implementation, the number of transmission shares of a transport block can be determined flexibly. For example, if the channel quality of the PDSCH is good, the number of transmissions of the transport block may be less. If the channel quality of the PDSCH is poor, the number of transmission blocks can be larger. The more transmission blocks are transmitted, the more time-domain diversity gain and/or frequency-domain diversity gain can be obtained. Data decoding failure rate.

2302. The access network device acquires the transport block to be sent.

Wherein, step 2302 may be performed before step 2201 , or step 2302 may be performed after step 2201 .

2303. The first device sends multiple copies of the transport block to the second device within the time-frequency resource range according to the number of sent copies.

Wherein, step 2203 is executed after step 2201 and step 2202. Wherein, the time domain resources of each transport block are different, and the multiple transport blocks are not continuously distributed in the time domain, and/or, the frequency domain resources of each transport block are different, and the multiple transport blocks are not distributed in the frequency domain. continuous.

2304. The terminal device combines multiple transmission blocks.

In this embodiment of the present application, after receiving the first information from the access network device, the terminal device receives multiple copies of the same transmission block from the first device in the time-frequency resource range according to the number of transmission copies, that is, the terminal device transmits the same transmission block in the time-frequency resource range. Blocks are blindly checked. After the terminal device receives multiple transmission blocks, the terminal device combines the multiple transmission blocks.

By implementing the method described in Figure 23, it is advantageous to save bit information.

Please refer to FIG. 24. FIG. 24 is a schematic flowchart of another data transmission method provided by an embodiment of the present application. 24 takes the first device as a terminal device and the second device as an access network device as an example. The application scenario of FIG. 24 is the uplink transmission application scenario of the transport block. As shown in FIG. 24, the data transmission method includes the following steps 2401-2405, wherein:

2401. The access network device sends first information to the terminal device.

The first information includes the number of transmission blocks to be sent, and the first information is also used by the terminal device to determine the time-frequency resources of each transmission block.

That is, the access network device needs to determine the number of transmission blocks to be sent and the time-frequency resources of each transmission block. After the access network device determines the number of transmission blocks to be sent and the time-frequency resources of each transmission block, the access network device sends the first information to the terminal device. Optionally, the first information may be downlink control information (downlink control information, DCI), or other information.

As an optional implementation manner, the access network device determines the number of data segments to be divided into the transport block according to the channel quality of the PUSCH. Based on this implementation, it is possible to flexibly determine the number of shares that need to be sent for a transport block.

2402. The terminal device determines the time-frequency resources of each transport block according to the first information.

Wherein, after the terminal device receives the first information from the access network device, the terminal device determines the time-frequency resources of each transmission block according to the first information.

Wherein, the access network device may indicate the time-frequency resources of each transport block to the terminal device in the following manners.

Mode 1: Any two first time domain offsets are the same, any two first frequency domain offsets are the same, and the first time domain offset is the time domain offset between two adjacent transmission blocks sent The first frequency domain offset is the frequency domain offset between two adjacent transmission blocks sent, and the first information also includes the time-frequency resources of the first transmission block, the first time domain offset amount and the first frequency domain offset.

Correspondingly, the terminal device may determine the time-frequency resource of the transport block sent for the second time according to the time-frequency resource, the first time-domain offset, and the first frequency-domain offset of the transport block sent for the first time. The terminal device may determine the time-frequency resource of the transport block sent for the third time according to the time-frequency resource, the first time-domain offset, and the first frequency-domain offset of the transport block sent for the second time. By analogy, the time-frequency resource of the next transport block can be determined according to the time-frequency resource of the previous transport block, the first time-domain offset, and the first frequency-domain offset.

The specific implementation principle of the first mode is similar to the specific implementation principle of the first mode in the embodiment described in FIG. 10 , and will not be described herein again.

Mode 2: At least one first time domain offset is different from other first time domain offsets, and at least one first frequency domain offset is different from other first frequency domain offsets. The domain offset is the time-domain offset between the transmission blocks sent twice adjacently, the first frequency-domain offset is the frequency-domain offset between the transmission blocks sent twice adjacently, and the first information It also includes the time-frequency resource and scheduling mode number of the first transport block, the scheduling mode number and the time domain offset of each second transport block relative to the first transport block and the frequency of each second transport block relative to the first transport block. The domain offsets have a mapping relationship, the first transport block is the transport block sent for the first time, and the second transport block is the transport block sent except the first transport block.

Correspondingly, the terminal device stores the mapping relationship between the scheduling mode number and the time domain offset of each second transmission block relative to the first transmission block and the frequency domain offset of each second transmission block relative to the first transmission block. . After the terminal device receives the first information, according to the scheduling mode number in the first information and the mapping relationship stored in the terminal device, the time domain offset of each second transmission block relative to the first transmission block and the time domain offset of each second transmission block can be determined. The frequency domain offset of the transport block relative to the first transport block. The terminal device may determine the second transmission block according to the time-frequency resources of the first transmission block, the time domain offset of the second transmission block relative to the first transmission block, and the frequency domain offset of the second transmission block relative to the first transmission block. The time-frequency resource of the transport block. For example, if the access network device sends three copies of transport block 1 to the terminal device, the first copy of transport block 1 is the first transport block. The second share of transport block 1 and the third share of transport block 1 are the second transport block.

Certainly, multiple mapping relation tables may be stored in the terminal device and the access network device. The number of sent copies of different transport blocks corresponds to different mapping relation tables. Alternatively, only one mapping relationship table may be stored in the terminal device and the access network device.

The specific implementation principle of the second mode is similar to the specific implementation principle of the second mode in the embodiment described in FIG. 10 , and will not be described herein again.

Mode 3: At least one first time domain offset is different from other first time domain offsets, and at least one first frequency domain offset is different from other first frequency domain offsets. The domain offset is the time-domain offset between the transmission blocks sent twice adjacently, the first frequency-domain offset is the frequency-domain offset between the transmission blocks sent twice adjacently, and the first information It also includes the time-frequency resource and scheduling mode number of the first transport block, the scheduling mode number and MCS information, the time domain offset of each second transport block relative to the first transport block, and the time domain offset of each second transport block relative to the first transport block. The frequency domain offsets of the blocks have a mapping relationship, the first transport block is the transport block sent for the first time, and the second transport block is the transport block sent except the first transport block.

The MCS information may include one or more of modulation order, spectral efficiency and target code rate.

Correspondingly, the terminal device stores the scheduling mode number and MCS information, the time domain offset of each second transport block relative to the first transport block, and the frequency domain offset of each second transport block relative to the first transport block. mapping relationship. After the terminal device receives the first information, according to the scheduling mode number in the first information and the mapping relationship stored in the terminal device, the MCS information, the time domain offset of each second transmission block relative to the first transmission block, and the The frequency domain offset of each second transport block relative to the first transport block. The terminal device may determine the second transmission block according to the time-frequency resources of the first transmission block, the time domain offset of the second transmission block relative to the first transmission block, and the frequency domain offset of the second transmission block relative to the first transmission block. The time-frequency resource of the transport block.

Certainly, multiple mapping relation tables may be stored in the terminal device and the access network device. The number of sent copies of different transport blocks corresponds to different mapping relation tables. Alternatively, only one mapping relationship table may be stored in the terminal device and the access network device.

The specific implementation principle of the third mode is similar to the specific implementation principle of the third mode in the embodiment described in FIG. 10 , and will not be described herein again.

2403. The terminal device acquires the transport block to be sent.

Wherein, step 2402 may be performed before step 2403 , or step 2402 may be performed after step 2403 .

2404. The terminal device sends multiple copies of the transmission block to the second device according to the number of transmission blocks sent and the time-frequency resources of each transmission block.

Wherein, step 2404 is executed after step 2402 and step 2403.

2405. The access network device combines multiple transmission blocks.

Specifically, after receiving multiple copies of the same transmission block from the first device according to the number of transmission copies and the time-frequency resources of each transmission block, the access network device combines the multiple transmission blocks.

It can be seen that by implementing the method described in FIG. 24 , the access network device can obtain the time domain diversity gain and/or the frequency domain diversity gain, which is beneficial for the access network device to successfully decode the transport block. In addition, the access network device can also send the first information to the terminal device in advance to notify the terminal device of the number of transmission blocks to be sent and the time-frequency resources of each transmission block, so that the terminal device can send the transmission block according to the number of transmission blocks and The time-frequency resource of each transport block sends multiple copies of the same transport block to the access network device.

Please refer to FIG. 25. FIG. 25 is a schematic flowchart of another data transmission method provided by an embodiment of the present application. 25, the first device is a terminal device and the second device is an access network device as an example. The application scenario of FIG. 25 is an uplink transmission application scenario of a transport block. As shown in Figure 25, the data transmission method includes the following steps 2501-2504, wherein:

2501. The access network device sends first information to the terminal device.

The first information includes the number of transmission blocks and the range of time-frequency resources.

That is to say, the access network device needs to determine the number of transmission blocks to be sent, and determine the time-frequency resources of each transmission block. After the access network device determines the number of transmission shares and the time-frequency resources of each transmission block, the access network device sends the first information to the terminal device. Optionally, the first information may be downlink control information (downlink control information, DCI), or other information.

As an optional implementation manner, the first device determines the number of transmission blocks to be sent according to the channel quality of the PUSCH. Based on this implementation, the number of transmission shares of a transport block can be determined flexibly. For example, if the channel quality of the PUSCH is good, the number of transmissions of the transport block may be less. If the channel quality of the PUSCH is poor, the number of transmission blocks can be larger, and the more transmission blocks are sent, the more time-domain diversity gain and/or frequency-domain diversity gain can be obtained. Data decoding failure rate.

2502. The terminal device acquires the transport block to be sent.

2503. The terminal device sends multiple copies of the transport block to the access network device within the time-frequency resource range according to the number of sent copies.

In the embodiment of the present application, after the terminal device receives the first information from the access network device and obtains the transmission block to be sent, the terminal device sends the transmission block to the access network device according to the number of transmission copies within the time-frequency resource range carried by the first information multiple copies.

The terminal device may first receive the first information, and then perform step 2502. Alternatively, the terminal device may perform step 2502 first, and then receive the first information.

Wherein, the time domain resources of each transport block are different, and the multiple transport blocks are not continuously distributed in the time domain, and/or, the frequency domain resources of each transport block are different, and the multiple transport blocks are not distributed in the frequency domain. continuous.

2504. The access network device combines multiple transmission blocks.

Specifically, the access network device receives multiple copies of the same transmission block from the terminal device in the time-frequency resource range according to the number of transmission copies, that is, the access network device performs blind detection on the transmission block in the time-frequency resource range. After receiving the multiple transmission blocks, the access network device combines the multiple transmission blocks.

By implementing the method described in FIG. 25, it is advantageous to save bit information.

In this embodiment of the present invention, functional modules of the device may be divided according to the foregoing method examples. For example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules. It should be noted that, the division of modules in the embodiment of the present invention is schematic, and is only a logical function division, and there may be other division manners in actual implementation.

Referring to FIG. 26, FIG. 26 shows a schematic structural diagram of a communication device according to an embodiment of the present application. The communication device shown in FIG. 26 may be used to perform part or all of the functions of the first device in the method embodiment described in FIG. 2 above. Alternatively, the communication device shown in FIG. 26 may be used to execute part or all of the functions of the access network device in the method embodiment described in FIG. 10 above. Alternatively, the communication device shown in FIG. 26 may be used to execute part or all of the functions of the access network device in the method embodiment described in FIG. 13 above. Alternatively, the communication device shown in FIG. 26 may be used to execute part or all of the functions of the terminal device in the method embodiment described in FIG. 14 above. Alternatively, the communication device shown in FIG. 26 may be used to perform part or all of the functions of the terminal device in the method embodiment described in FIG. 15 above. The communication device shown in FIG. 26 may include a processing module 2601 and a communication module 2602 . in:

The processing module 2601 is used for segmenting the transmission block to obtain multiple data segments of the transmission block; the communication module 2602 is used for sending multiple data segments to the second device, wherein the data segments of different data segments in the multiple data segments are The time domain resources are not the same, and the multiple data segments are discontinuously distributed in the time domain, and/or the frequency domain resources of different data segments among the multiple data segments are different, and the multiple data segments are discontinuous in the frequency domain distribution.

As an optional implementation manner, the transport block is a transport block after data interleaving.

As an optional implementation manner, the communication device is an access network device, the second device is a terminal device, and the communication module 2602 is further configured to send a plurality of data segments to the second device before the communication module 2602 sends multiple data segments to the second device. The first information is sent, where the first information includes the number of data segments to be divided into the transport block, and the first information is further used by the second device to determine the time-frequency resources of each data segment of the transport block.

As an optional implementation manner, the communication device is a terminal device, the second device is an access network device, and the communication module 2602 is further configured to segment the transmission block in the processing module 2601 to obtain multiple data segments of the transmission block Before, the first information is received from the second device, the first information includes the number of data segments to be divided into the transmission block, and the first information is also used by the communication device to determine the time-frequency resources of each data segment of the transmission block; the processing module 2601 also uses In order to determine the time-frequency resources of each data segment of the transmission block according to the first information; the processing module 2601 segments the transmission block to obtain multiple data segments of the transmission block. Specifically, the processing module 2601 divides the transmission block according to the number of data segments. Perform segmentation to obtain multiple data segments of the transmission block; the communication module 2602 sends multiple data segments to the second device, including: the communication module 2602 sends multiple data segments to the second device according to the time-frequency resources of each data segment of the transmission block part.

As an optional implementation manner, any two first time-domain offsets are the same, any two first frequency-domain offsets, and the first time-domain offset is data sent twice adjacently in the transmission block The time-domain offset between segments, the first frequency-domain offset is the frequency-domain offset between two adjacent data segments sent in the transport block, and the first information also includes the time-frequency of the first data segment resource, a first time-domain offset, and a first frequency-domain offset, and the first data segment is the first sent data segment of the transport block.

As an optional implementation manner, at least one first time domain offset is different from other first time domain offsets, and at least one first frequency domain offset is different from other first frequency domain offsets are not the same, the first time-domain offset is the time-domain offset between the data segments sent twice adjacently in the transport block, and the first frequency-domain offset is the data segment sent twice adjacently in the transport block The first information also includes the time-frequency resource and scheduling mode number of the first data segment, the scheduling mode number and the time domain offset of each second data segment relative to the first data segment and each The second data segment has a mapping relationship with the frequency domain offset of the first data segment, the first data segment is the first data segment sent in the transport block, and the second data segment is the first data segment of the transport block except the first data segment. external data segment.

As an optional implementation manner, at least one first time domain offset is different from other first time domain offsets, and at least one first frequency domain offset is different from other first frequency domain offsets are not the same, the first time-domain offset is the time-domain offset between the data segments sent twice adjacently in the transport block, and the first frequency-domain offset is the data segment sent twice adjacently in the transport block The first information also includes the time-frequency resource and scheduling mode number of the first data segment, the scheduling mode number and the modulation and coding scheme MCS information, and the time of each second data segment relative to the first data segment. The domain offset and the frequency domain offset of each second data segment relative to the first data segment have a mapping relationship, the first data segment is the first sent data segment of the transport block, and the second data segment is the Data segments other than the first data segment.

As an optional implementation manner, the communication device is an access network device, and the second device is a terminal device. The communication module 2602 is further configured to send the first data segment to the second device before sending multiple data segments to the second device. information, the first information includes the number of data segments divided by the transport block and the time-frequency resource range; the communication module 2602 sends multiple data segments to the second device in a specific manner: the communication module 2602 sends multiple data segments to the second device within the time-frequency resource range. data segment.

As an optional implementation manner, the processing module 2601 is further configured to determine the number of data segments to be divided into the transport block according to the channel quality or transmission delay requirement of the physical downlink shared channel PDSCH.

As an optional implementation manner, the communication device is a terminal device, the second device is an access network device, and the communication module 2602 is further configured to segment the transmission block in the processing module 2601 to obtain multiple data segments of the transmission block Before, the first information is received from the second device, and the first information includes the number of data segments divided by the transport block and the range of time-frequency resources; the specific manner in which the processing module 2601 segments the transport block is: The transmission block is segmented; the communication module 2602 sends multiple data segments to the second device specifically: the communication module 2602 sends multiple data segments to the second device within the time-frequency resource range.

Referring to FIG. 26, FIG. 26 shows a schematic structural diagram of a communication device according to an embodiment of the present application. The communication device shown in FIG. 26 may be used to perform part or all of the functions of the second device in the method embodiment described in FIG. 2 above. Alternatively, the communication device shown in FIG. 26 may be used to execute part or all of the functions of the terminal device in the method embodiment described in FIG. 10 above. Alternatively, the communication device shown in FIG. 26 may be used to execute part or all of the functions of the terminal device in the method embodiment described in FIG. 13 above. Alternatively, the communication device shown in FIG. 26 may be used to execute part or all of the functions of the access network device in the method embodiment described in FIG. 14 above. Alternatively, the communication device shown in FIG. 26 may be used to execute part or all of the functions of the access network device in the method embodiment described in FIG. 15 above. The communication device shown in FIG. 26 may include a processing module 2601 and a communication module 2602 . in:

A communication module 2602, configured to receive multiple data segments of the transport block from the first device, wherein different data segments in the multiple data segments have different time domain resources, and the multiple data segments are discontinuously distributed in the time domain, and /Or, different data segments in the multiple data segments have different frequency domain resources, and the multiple data segments are not continuously distributed in the frequency domain; the processing module 2601 is configured to synthesize the multiple data segments into a transmission block.

As an optional implementation manner, the transport block is a transport block after data interleaving.

As an optional implementation manner, the first device is an access network device, and the communication device is a terminal device. The communication module 2602 is further configured to receive from the first device before receiving multiple data segments of the transport block from the first device. The first information, the first information includes the number of data segments to be divided in the transmission block, and the first information is also used by the communication device to determine the time-frequency resources of each data segment of the transmission block;

The processing module 2601 is further configured to determine the time-frequency resources of each data segment of the transmission block according to the first information; the communication module 2602 receives the multiple data segments of the transmission block from the first device. and time-frequency resources for the respective data segments of the transport block to receive the plurality of data segments of the transport block from the first device.

As an optional implementation manner, the first device is a terminal device, and the communication device is an access network device, and the communication module 2602 is further configured to send data to the second device before receiving multiple data segments of the transport block from the first device. The first information is sent, where the first information includes the number of data segments to be divided into the transport block, and the first information is further used by the first device to determine the time-frequency resources of each data segment of the transport block.

As an optional implementation manner, any two first time-domain offsets are the same, any two first frequency-domain offsets are the same, and the first time-domain offsets are sent in two adjacent transmission blocks. The time domain offset between the data segments, the first frequency domain offset is the frequency domain offset between the data segments sent twice adjacently in the transport block, and the first information further includes the time domain of the first data segment. frequency resources, a first time-domain offset, and a first frequency-domain offset, and the first data segment is the first sent data segment of the transport block.

As an optional implementation manner, at least one first time domain offset is different from other first time domain offsets, and at least one first frequency domain offset is different from other first frequency domain offsets are not the same, the first time-domain offset is the time-domain offset between the data segments sent twice adjacently in the transport block, and the first frequency-domain offset is the data segment sent twice adjacently in the transport block The first information also includes the time-frequency resource and scheduling mode number of the first data segment, the scheduling mode number and the time domain offset of each second data segment relative to the first data segment and each The second data segment has a mapping relationship with the frequency domain offset of the first data segment, the first data segment is the first data segment sent in the transport block, and the second data segment is the first data segment of the transport block except the first data segment. external data segment.

As an optional implementation manner, at least one first time domain offset is different from other first time domain offsets, and at least one first frequency domain offset is different from other first frequency domain offsets are not the same, the first time-domain offset is the time-domain offset between the data segments sent twice adjacently in the transport block, and the first frequency-domain offset is the data segment sent twice adjacently in the transport block The first information also includes the time-frequency resource and scheduling mode number of the first data segment, the scheduling mode number and the modulation and coding scheme MCS information, and the time of each second data segment relative to the first data segment. The domain offset and the frequency domain offset of each second data segment relative to the first data segment have a mapping relationship, the first data segment is the first sent data segment of the transport block, and the second data segment is the Data segments other than the first data segment.

As an optional implementation manner, the first device is an access network device, and the communication device is a terminal device. The communication module 2602 is further configured to: Receiving the first information, the first information includes the number of data segments divided by the transport block and the range of time-frequency resources; the manner in which the communication module 2602 receives multiple data segments of the transport block from the first device is specifically: the communication module 2602 according to the number of data segments in The time-frequency resource range receives a plurality of data segments of the transport block from the first device.

As an optional implementation manner, the first device is a terminal device, and the communication device is an access network device, and the communication module 2602 is further configured to send data to the second device before receiving multiple data segments of the transport block from the first device. The first information is sent, and the first information includes the number of data segments divided by the transport block and the range of time-frequency resources; the communication module 2602 receives the multiple data segments of the transport block from the first device. The time-frequency resource range receives a plurality of data segments of the transport block from the first device.

As an optional implementation manner, the processing module 2601 is further configured to determine the number of data segments to be divided into the transport block according to the channel quality or transmission delay requirement of the physical uplink shared channel PUSCH.

Referring to FIG. 26, FIG. 26 shows a schematic structural diagram of a communication device according to an embodiment of the present application. The communication device shown in FIG. 26 may be used to execute part or all of the functions of the first device in the method embodiment described in FIG. 16 . Alternatively, the communication device shown in FIG. 26 may be used to execute part or all of the functions of the access network device in the method embodiment described in FIG. 22 above. Alternatively, the communication device shown in FIG. 26 may be used to execute part or all of the functions of the access network device in the method embodiment described in FIG. 23 above. Alternatively, the communication device shown in FIG. 26 may be used to execute part or all of the functions of the terminal device in the method embodiment described in FIG. 24 above. Alternatively, the communication device shown in FIG. 26 may be used to perform part or all of the functions of the terminal device in the method embodiment described in FIG. 25 above. The communication device shown in FIG. 26 may include a processing module 2601 and a communication module 2602 . in:

The processing module 2601 is used to obtain the transmission block to be sent; the communication module 2602 is used to send multiple copies of the transmission block to the second device, wherein the time domain resources of each transmission block are different, and the multiple transmission blocks are in the time domain The distribution is discontinuous, and/or the frequency domain resources of each transport block are different, and the multiple transport blocks are discontinuously distributed in the frequency domain.

As an optional implementation manner, the communication device is an access network device, and the second device is a terminal device. The communication module 2602 is further configured to send the first transmission block to the second device before sending multiple copies of the transmission block to the second device. information, the first information includes the number of transmission blocks sent, and the first information is also used by the second device to determine the time-frequency resources of each transmission block; the communication module 2602 sends multiple transmission blocks to the second device. Module 2602 sends multiple copies of the transport block to the second device according to the number of copies to be sent and the time-frequency resources of each transport block.

As an optional implementation manner, the communication device is a terminal device, and the second device is an access network device. The communication module 2602 is further configured to receive the first transmission block from the second device before sending multiple copies of the transmission block to the second device. information, the first information includes the number of transmission blocks sent, and the first information is also used by the communication device to determine the time-frequency resources of each transmission block; the processing module 2601 is also used to determine the time-frequency of each transmission block according to the first information. Resource; the communication module 2602 sends multiple copies of the transmission block to the second device specifically: the communication module 2602 sends multiple copies of the transmission block to the second device according to the number of transmission blocks sent and the time-frequency resources of each transmission block.

As an optional implementation manner, any two first time-domain offsets are the same, any two first frequency-domain offsets are the same, and the first time-domain offset is the sum of the two adjacent transmission blocks sent. The time-domain offset between the two, the first frequency-domain offset is the frequency-domain offset between two adjacent transmission blocks sent, and the first information also includes the time-frequency resources of the first transmitted transmission block, a first time-domain offset and a first frequency-domain offset.

As an optional implementation manner, at least one first time domain offset is different from other first time domain offsets, and at least one first frequency domain offset is different from other first frequency domain offsets are not the same, the first time-domain offset is the time-domain offset between two adjacent transmission blocks sent, and the first frequency-domain offset is the frequency domain offset between two adjacent transmission blocks sent The first information also includes the time-frequency resource of the first transport block and the scheduling mode number, and the scheduling mode number is related to the time domain offset of each second transport block relative to the first transport block and the relative value of each second transport block to the first transport block. The frequency domain offsets of the first transport block have a mapping relationship, the first transport block is a transport block sent for the first time, and the second transport block is a transport block sent except the first transport block.

As an optional implementation manner, at least one first time domain offset is different from other first time domain offsets, and at least one first frequency domain offset is different from other first frequency domain offsets are not the same, the first time-domain offset is the time-domain offset between two adjacent transmission blocks sent, and the first frequency-domain offset is the frequency domain offset between two adjacent transmission blocks sent Shift amount, the first information further includes the time-frequency resource and scheduling mode number of the first transport block, the scheduling mode number and the modulation and coding scheme MCS information, the time domain offset of each second transport block relative to the first transport block, and each The frequency domain offset of the second transport block relative to the first transport block has a mapping relationship, the first transport block is the transport block sent for the first time, and the second transport block is the transport block sent except the first transport block.

As an optional implementation manner, the communication device is an access network device, and the second device is a terminal device. The communication module 2602 is further configured to send the first transmission block to the second device before sending multiple copies of the transmission block to the second device. information, the first information includes the number of transmission blocks and the range of time-frequency resources; the communication module 2602 sends multiple copies of the transmission block to the second device specifically: The device sends multiple copies of the transport block.

As an optional implementation manner, the processing module 2601 is further configured to determine the number of transmission blocks to be sent according to the channel quality of the physical downlink shared channel PDSCH before the communication module 2602 sends the first information to the second device.

As an optional implementation manner, the communication device is a terminal device, the second device is an access network device, and the communication module 2602 is further configured to receive the first transmission block from the second device before sending the transmission block multiple times to the second device. information, the first information includes the number of transmission blocks and the range of time-frequency resources; the communication module 2602 sends multiple copies of the transmission block to the second device specifically: The device sends multiple copies of the transport block.

Referring to FIG. 26, FIG. 26 shows a schematic structural diagram of a communication device according to an embodiment of the present application. The communication device shown in FIG. 26 may be used to execute part or all of the functions of the second device in the method embodiment described in FIG. 16 . Alternatively, the communication device shown in FIG. 26 may be used to execute part or all of the functions of the terminal device in the method embodiment described in FIG. 22 above. Alternatively, the communication device shown in FIG. 26 may be used to perform part or all of the functions of the terminal device in the method embodiment described in FIG. 23 above. Alternatively, the communication device shown in FIG. 26 may be used to execute part or all of the functions of the access network device in the method embodiment described in the foregoing FIG. 24 . Alternatively, the communication device shown in FIG. 26 may be used to execute part or all of the functions of the access network device in the method embodiment described in FIG. 25 above. The communication device shown in FIG. 26 may include a processing module 2601 and a communication module 2602 . in:

A communication module 2602, configured to receive multiple copies of the same transport block from the first device, wherein the time domain resources of each transport block are different, and the multiple transport blocks are not consecutively distributed in the time domain, and/or, each transport block The frequency domain resources are not the same, and the distribution of the multiple transmission blocks is discontinuous in the frequency domain; the processing module 2601 is used to combine the multiple transmission blocks.

As an optional implementation manner, the first device is an access network device, and the communication device is a terminal device. The communication module 2602 is further configured to receive the first device from the first device before receiving multiple copies of the same transmission block from the first device. One piece of information, the first information includes the number of transmission blocks to be sent, and the first information is also used by the communication device to determine the time-frequency resources of each transmission block; the processing module 2601 is further used to determine the time and frequency of each transmission block according to the first information The communication module 2602 receives multiple copies of the same transmission block from the first device specifically: the communication module 2602 receives multiple copies of the same transmission block from the first device according to the number of sent copies and the time-frequency resources of each transmission block.

As an optional implementation manner, the first device is a terminal device, and the communication device is an access network device. The communication module 2602 is further configured to send the first device to the first device before receiving multiple copies of the same transmission block from the first device. One piece of information, the first information includes the number of transmission blocks to be sent, and the first information is also used by the first device to determine the time-frequency resources of each transmission block; the communication module 2602 receives multiple copies of the same transmission block from the first device specifically as follows: : The communication module 2602 receives multiple copies of the same transmission block from the first device according to the number of sent copies and the time-frequency resources of each transmission block.

As an optional implementation manner, any two first time-domain offsets are the same, any two first frequency-domain offsets are the same, and the first time-domain offset is the sum of the two adjacent transmission blocks sent. The time-domain offset between the two, the first frequency-domain offset is the frequency-domain offset between two adjacent transmission blocks sent, and the first information also includes the time-frequency resources of the first transmitted transmission block, a first time-domain offset and a first frequency-domain offset.

As an optional implementation manner, at least one first time domain offset is different from other first time domain offsets, and at least one first frequency domain offset is different from other first frequency domain offsets are not the same, the first time-domain offset is the time-domain offset between two adjacent transmission blocks sent, and the first frequency-domain offset is the frequency domain offset between two adjacent transmission blocks sent The first information also includes the time-frequency resource of the first transport block and the scheduling mode number, and the scheduling mode number is related to the time domain offset of each second transport block relative to the first transport block and the relative value of each second transport block to the first transport block. The frequency domain offsets of the first transport block have a mapping relationship, the first transport block is a transport block sent for the first time, and the second transport block is a transport block sent except the first transport block.

As an optional implementation manner, at least one first time domain offset is different from other first time domain offsets, and at least one first frequency domain offset is different from other first frequency domain offsets are not the same, the first time-domain offset is the time-domain offset between two adjacent transmission blocks sent, and the first frequency-domain offset is the frequency domain offset between two adjacent transmission blocks sent Shift amount, the first information further includes the time-frequency resource and scheduling mode number of the first transport block, the scheduling mode number and the modulation and coding scheme MCS information, the time domain offset of each second transport block relative to the first transport block, and each The frequency domain offset of the second transport block relative to the first transport block has a mapping relationship, the first transport block is the transport block sent for the first time, and the second transport block is the transport block sent except the first transport block.

As an optional implementation manner, the first device is an access network device, and the communication device is a terminal device. The communication module 2602 is further configured to receive the first device from the first device before receiving multiple copies of the same transmission block from the first device. One piece of information, the first information includes the number of transmission blocks and the range of time-frequency resources; the communication module 2602 receives multiple copies of the same transmission block from the first device specifically as follows: The first device receives multiple copies of the same transport block.

As an optional implementation manner, the first device is a terminal device, and the communication device is an access network device. The communication module 2602 is further configured to send the first device to the first device before receiving multiple copies of the same transmission block from the first device. One piece of information, the first information includes the number of transmission blocks and the range of time-frequency resources; the communication module 2602 receives multiple copies of the same transmission block from the first device specifically as follows: The first device receives multiple copies of the same transport block.

As an optional implementation manner, the processing module 2601 is further configured to determine the number of transmission blocks to be sent according to the channel quality of the physical uplink shared channel PUSCH before the communication module 2602 sends the first information to the first device.

As an optional implementation manner, the communication module 2602 is further configured to send an ACK message to the first device when the processing module 2601 successfully decodes the combined transport block, where the combined transport block is obtained by combining the M received transport blocks The transport block, M is less than or equal to the number of transmission blocks N.

Please refer to FIG. 27. FIG. 27 is a schematic structural diagram of a communication device disclosed in an embodiment of the present application. As shown in FIG. 27 , the communication device includes a processor 2701 , a memory 2702 and a communication interface 2703 . Among them, the processor 2701, the memory 2702 and the communication interface 2703 are connected.

The processor 2701 may be a central processing unit (CPU), a general-purpose processor, a coprocessor, a digital signal processor (DSP), or an application-specific integrated circuit (ASIC). , a field programmable gate array (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. The processor 2701 can also be a combination that realizes computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.

Among them, the communication interface 2703 is used to realize communication with other devices.

The processor 2701 invokes the program code stored in the memory 2702 to execute the steps performed by the first device or the second device in the above method embodiments.

Based on the same inventive concept, the problem-solving principle of the communication device provided in the embodiment of the present application is similar to the problem-solving principle of the first device or the second device in the method embodiment of the present application. Therefore, the implementation of each device can refer to the implementation of the method, as Brief description, not repeated here.

In the above-mentioned embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present application. scope.

Claims (40)

1. A method of data transmission, the method comprising:

the method comprises the steps that first equipment segments a transmission block to obtain a plurality of data segments of the transmission block;

the first device sends the data segments to a second device, wherein time domain resources of different data segments in the data segments are different, and distribution of the data segments in a time domain is discontinuous, and/or frequency domain resources of different data segments in the data segments are different, and distribution of the data segments in a frequency domain is discontinuous.

2. The method of claim 1, wherein the transport block is a data interleaved transport block.

3. The method of claim 1 or 2, wherein the first device is an access network device, the second device is a terminal device, and before the first device sends the plurality of data segments to the second device, the method further comprises:

the first device sends first information to the second device, where the first information includes the number of data segments that the transport block needs to be divided, and the first information is also used for the second device to determine time-frequency resources of each data segment of the transport block.

4. The method according to claim 1 or 2, wherein the first device is a terminal device, the second device is an access network device, and before the first device segments the transport block and obtains the plurality of data segments of the transport block, the method further comprises:

the first device receives first information from the second device, where the first information includes the number of data segments that the transmission block needs to be divided into, and the first information is also used for the first device to determine time-frequency resources of each data segment of the transmission block;

the first equipment determines the time-frequency resource of each data segment of the transmission block according to the first information;

the first device segments a transport block to obtain a plurality of data segments of the transport block, and includes:

the first equipment segments the transmission block according to the number of the data segments to obtain a plurality of data segments of the transmission block;

the first device sending the plurality of data segments to a second device, comprising:

and the first equipment sends the data segments to the second equipment according to the time-frequency resources of the data segments of the transmission block.

5. The method according to claim 3 or 4, wherein any two first time domain offsets are the same, and any two first frequency domain offsets are the same, where the first time domain offset is a time domain offset between two adjacent transmitted data segments of the transport block, the first frequency domain offset is a frequency domain offset between two adjacent transmitted data segments of the transport block, the first information further includes a time-frequency resource of a first data segment, the first time domain offset, and the first frequency domain offset, and the first data segment is a first transmitted data segment of the transport block.

6. The method of claim 3 or 4, wherein at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, the first time domain offset is a time domain offset between two adjacent transmitted data segments of the transport block, the first frequency domain offset is a frequency domain offset between two adjacent transmitted data segments of the transport block, the first information further includes a time-frequency resource of a first data segment and a scheduling mode number, the scheduling mode number has a mapping relation with a time domain offset of each second data segment relative to the first data segment and a frequency domain offset of each second data segment relative to the first data segment, and the first data segment is a first transmitted data segment of the transport block, the second data segment is a data segment of the transport block other than the first data segment.

7. The method of claim 3 or 4, wherein at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, the first time domain offset is a time domain offset between two adjacent transmitted data segments of the transport block, the first frequency domain offset is a frequency domain offset between two adjacent transmitted data segments of the transport block, the first information further includes time-frequency resources and a scheduling scheme number of a first data segment, the scheduling scheme number has a mapping relation with Modulation and Coding Scheme (MCS) information, a time domain offset of each second data segment with respect to the first data segment, and a frequency domain offset of each second data segment with respect to the first data segment, and the first data segment is a first transmitted data segment of the transport block, the second data segment is a data segment of the transport block other than the first data segment.

8. The method of claim 1 or 2, wherein the first device is an access network device, the second device is a terminal device, and before the first device sends the plurality of data segments to the second device, the method further comprises:

the first device sends first information to the second device, wherein the first information comprises the number of data segments divided by the transmission block and a time-frequency resource range;

the first device sending the plurality of data segments to a second device, comprising:

and the first equipment sends the data segments to the second equipment in the time frequency resource range.

9. The method according to claim 3 or 8, characterized in that the method further comprises:

and the first equipment determines the number of the data segments which need to be divided by the transmission block according to the channel quality or transmission delay requirement of the PDSCH.

10. The method according to claim 1 or 2, wherein the first device is a terminal device, the second device is an access network device, and before the first device segments the transport block and obtains the plurality of data segments of the transport block, the method further comprises:

the first device receives first information from the second device, wherein the first information comprises the number of data segments divided by the transmission block and a time-frequency resource range;

the first device segmenting a transport block, comprising:

the first device segments the transmission block according to the number of the data segments;

the first device sending the plurality of data segments to a second device, comprising:

and the first equipment sends the data segments to the second equipment in the time frequency resource range.

11. A method of data transmission, the method comprising:

the second device receives a plurality of data segments of a transmission block from the first device, wherein time domain resources of different data segments in the plurality of data segments are different and the distribution of the plurality of data segments in a time domain is discontinuous, and/or frequency domain resources of different data segments in the plurality of data segments are different and the distribution of the plurality of data segments in a frequency domain is discontinuous;

the second device synthesizes the plurality of data segments into the transport block.

12. The method of claim 11, wherein the transport block is a data interleaved transport block.

13. The method of claim 11 or 12, wherein the first device is an access network device, wherein the second device is a terminal device, and wherein before the second device receives the plurality of data segments of the transport block from the first device, the method further comprises:

the second device receives first information from the first device, wherein the first information comprises the number of data segments of the transmission block to be divided, and the first information is also used for the second device to determine time-frequency resources of each data segment of the transmission block;

the second equipment determines the time-frequency resource of each data segment of the transmission block according to the first information;

the second device receiving a plurality of data segments of a transport block from a first device, comprising:

and the second equipment receives the plurality of data segments of the transmission block from the first equipment according to the number of the data segments and the time-frequency resources of each data segment of the transmission block.

14. The method of claim 11 or 12, wherein the first device is a terminal device, wherein the second device is an access network device, and wherein before the second device receives the plurality of data segments of the transport block from the first device, the method further comprises:

and the second equipment sends first information to the second equipment, wherein the first information comprises the number of the data segments of the transmission block to be divided, and the first information is also used for the first equipment to determine the time-frequency resources of each data segment of the transmission block.

15. The method according to claim 13 or 14, wherein any two first time domain offsets are the same, any two first frequency domain offsets are the same, the first time domain offset is a time domain offset between two adjacent transmitted data segments of the transport block, the first frequency domain offset is a frequency domain offset between two adjacent transmitted data segments of the transport block, the first information further includes a time-frequency resource of a first data segment, the first time domain offset and the first frequency domain offset, and the first data segment is a first transmitted data segment of the transport block.

16. The method of claim 13 or 14, wherein at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, the first time domain offset is a time domain offset between two adjacent transmitted data segments of the transport block, the first frequency domain offset is a frequency domain offset between two adjacent transmitted data segments of the transport block, the first information further includes a time-frequency resource of a first data segment and a scheduling mode number, the scheduling mode number has a mapping relationship with a time domain offset of each second data segment with respect to the first data segment and a frequency domain offset of each second data segment with respect to the first data segment, and the first data segment is a first transmitted data segment of the transport block, the second data segment is a data segment of the transport block other than the first data segment.

17. The method of claim 13 or 14, wherein at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, the first time domain offset is a time domain offset between two adjacent transmitted data segments of the transport block, the first frequency domain offset is a frequency domain offset between two adjacent transmitted data segments of the transport block, the first information further includes time-frequency resources and a scheduling scheme number of a first data segment, the scheduling scheme number has a mapping relation with Modulation and Coding Scheme (MCS) information, a time domain offset of each second data segment with respect to the first data segment, and a frequency domain offset of each second data segment with respect to the first data segment, and the first data segment is a first transmitted data segment of the transport block, the second data segment is a data segment of the transport block other than the first data segment.

18. The method of claim 11 or 12, wherein the first device is an access network device, wherein the second device is a terminal device, and wherein before the second device receives the plurality of data segments of the transport block from the first device, the method further comprises:

the second equipment receives first information from the first equipment, wherein the first information comprises the number of data segments divided by the transmission block and a time-frequency resource range;

the second device receiving a plurality of data segments of a transport block from a first device, comprising:

and the second equipment receives the plurality of data segments of the transmission block from the first equipment in the time frequency resource range according to the number of the data segments.

19. The method of claim 11 or 12, wherein the first device is a terminal device, wherein the second device is an access network device, and wherein before the second device receives the plurality of data segments of the transport block from the first device, the method further comprises:

the second device sends first information to the second device, wherein the first information comprises the number of data segments divided by the transmission block and a time-frequency resource range;

the second device receiving a plurality of data segments of a transport block from a first device, comprising:

and the second equipment receives the plurality of data segments of the transmission block from the first equipment in the time frequency resource range according to the number of the data segments.

20. The method according to claim 14 or 19, characterized in that the method further comprises:

and the second equipment determines the number of the data segments which need to be divided by the transmission block according to the channel quality or transmission delay requirement of a Physical Uplink Shared Channel (PUSCH).

21. A communication device, characterized in that the communication device comprises:

the processing module is used for segmenting a transmission block to obtain a plurality of data segments of the transmission block;

a communication module, configured to send the multiple data segments to a second device, where time domain resources of different data segments in the multiple data segments are different, and distribution of the multiple data segments in a time domain is discontinuous, and/or frequency domain resources of different data segments in the multiple data segments are different, and distribution of the multiple data segments in a frequency domain is discontinuous.

22. The communications device of claim 21, wherein the transport block is a data interleaved transport block.

23. The communication device of claim 21 or 22, wherein the communication device is an access network device, wherein the second device is a terminal device,

the communication module is further configured to send first information to a second device before the communication module sends the plurality of data segments to the second device, where the first information includes the number of data segments that the transport block needs to be divided, and the first information is further used for the second device to determine time-frequency resources of each data segment of the transport block.

24. The communication device of claim 21 or 22, wherein the communication device is a terminal device, wherein the second device is an access network device,

the communication module is further configured to receive, from the second device, first information before the processing module segments a transmission block to obtain a plurality of data segments of the transmission block, where the first information includes the number of data segments into which the transmission block needs to be divided, and the first information is further used by the communication device to determine time-frequency resources of each data segment of the transmission block;

the processing module is further configured to determine, according to the first information, time-frequency resources of each data segment of the transport block;

the method for segmenting the transmission block by the processing module to obtain the plurality of data segments of the transmission block specifically comprises the following steps:

the processing module is used for segmenting the transmission block according to the number of the data segments to obtain a plurality of data segments of the transmission block;

the communication module sends the plurality of data segments to a second device, including:

and the communication module sends the data segments to the second equipment according to the time-frequency resources of the data segments of the transmission block.

25. The communication device according to claim 23 or 24, wherein any two first time domain offsets are the same, any two first frequency domain offsets are the same, the first time domain offset is a time domain offset between two adjacent transmitted data segments of the transport block, the first frequency domain offset is a frequency domain offset between two adjacent transmitted data segments of the transport block, the first information further includes a time-frequency resource of a first data segment, the first time domain offset and the first frequency domain offset, and the first data segment is a first transmitted data segment of the transport block.

26. The communication device according to claim 23 or 24, wherein at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, the first time domain offset is a time domain offset between two adjacent transmitted data segments of the transmission block, the first frequency domain offset is a frequency domain offset between two adjacent transmitted data segments of the transmission block, the first information further includes time-frequency resources of a first data segment and a scheduling mode number, the scheduling mode number has a mapping relation with a time domain offset of each second data segment with respect to the first data segment and a frequency domain offset of each second data segment with respect to the first data segment, the first data segment is a first transmitted data segment of the transmission block, the second data segment is a data segment of the transport block other than the first data segment.

27. The communication device according to claim 23 or 24, wherein at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, the first time domain offset is a time domain offset between two adjacent transmitted data segments of the transport block, the first frequency domain offset is a frequency domain offset between two adjacent transmitted data segments of the transport block, the first information further comprises a time-frequency resource and a scheduling scheme number of a first data segment, the scheduling scheme number has a mapping relation with Modulation and Coding Scheme (MCS) information, a time domain offset of each second data segment with respect to the first data segment, and a frequency domain offset of each second data segment with respect to the first data segment, and the first data segment is a first transmitted data segment of the transport block, the second data segment is a data segment of the transport block other than the first data segment.

28. The communication device of claim 23 or 24, wherein the communication device is an access network device, wherein the second device is a terminal device,

the communication module is further configured to send, to a second device, first information before sending the plurality of data segments to the second device, where the first information includes the number of data segments divided by the transport block and a time-frequency resource range;

the manner of sending the plurality of data segments to the second device by the communication module is specifically:

the communication module transmits the plurality of data segments to a second device over the range of time-frequency resources.

29. The communication device of claim 23 or 28,

the processing module is further configured to determine the number of data segments that the transmission block needs to divide according to the channel quality or the transmission delay requirement of the PDSCH.

30. The communication device of claim 21 or 22, wherein the communication device is a terminal device, wherein the second device is an access network device,

the communication module is further configured to receive first information from the second device before the processing module segments a transport block to obtain a plurality of data segments of the transport block, where the first information includes the number of data segments and a time-frequency resource range partitioned by the transport block;

the method for segmenting the transmission block by the processing module specifically comprises the following steps:

the processing module segments the transmission block according to the number of the data segments;

the manner of sending the plurality of data segments to the second device by the communication module is specifically:

the communication module transmits the plurality of data segments to a second device over the range of time-frequency resources.

31. A communication device, characterized in that the communication device comprises:

a communication module, configured to receive a plurality of data segments of a transport block from a first device, where time domain resources of different data segments of the plurality of data segments are different and distribution of the plurality of data segments in a time domain is discontinuous, and/or frequency domain resources of different data segments of the plurality of data segments are different and distribution of the plurality of data segments in a frequency domain is discontinuous;

a processing module for combining the plurality of data segments into the transport block.

32. The communications device of claim 31, wherein the transport block is a data interleaved transport block.

33. The communication device of claim 31 or 32, wherein the first device is an access network device, wherein the communication device is a terminal device,

the communication module is further configured to receive, before receiving multiple data segments of a transport block from a first device, first information from the first device, where the first information includes a number of data segments into which the transport block needs to be divided, and the first information is further used by the communication device to determine a time-frequency resource of each data segment of the transport block;

the processing module is further configured to determine, according to the first information, time-frequency resources of each data segment of the transport block;

the manner in which the communication module receives the plurality of data segments of the transport block from the first device is specifically:

the communication module receives a plurality of data segments of the transport block from the first device according to the number of data segments and time-frequency resources of each data segment of the transport block.

34. The communication device of claim 31 or 32, wherein the first device is a terminal device, wherein the communication device is an access network device,

the communication module is further configured to send, to the second device, first information before receiving the plurality of data segments of the transport block from the first device, where the first information includes the number of data segments into which the transport block needs to be divided, and the first information is further used for the first device to determine time-frequency resources of each data segment of the transport block.

35. The communication device according to claim 33 or 34, wherein any two first time domain offsets are the same, any two first frequency domain offsets are the same, the first time domain offset is a time domain offset between two adjacent transmitted data segments of the transport block, the first frequency domain offset is a frequency domain offset between two adjacent transmitted data segments of the transport block, the first information further includes a time-frequency resource of a first data segment, the first time domain offset and the first frequency domain offset, and the first data segment is a first transmitted data segment of the transport block.

36. The communication device according to claim 33 or 34, wherein at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, the first time domain offset is a time domain offset between two adjacent transmitted data segments of the transmission block, the first frequency domain offset is a frequency domain offset between two adjacent transmitted data segments of the transmission block, the first information further includes time-frequency resources of a first data segment and a scheduling mode number, the scheduling mode number has a mapping relation with a time domain offset of each second data segment with respect to the first data segment and a frequency domain offset of each second data segment with respect to the first data segment, and the first data segment is a first transmitted data segment of the transmission block, the second data segment is a data segment of the transport block other than the first data segment.

37. The communication device of claim 33 or 34, wherein at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, the first time domain offset is a time domain offset between two adjacent transmitted data segments of the transport block, the first frequency domain offset is a frequency domain offset between two adjacent transmitted data segments of the transport block, the first information further comprises a time-frequency resource and a scheduling scheme number of a first data segment, the scheduling scheme number has a mapping relation with Modulation and Coding Scheme (MCS) information, a time domain offset of each second data segment with respect to the first data segment, and a frequency domain offset of each second data segment with respect to the first data segment, and the first data segment is a first transmitted data segment of the transport block, the second data segment is a data segment of the transport block other than the first data segment.

38. The communication device of claim 31 or 32, wherein the first device is an access network device, wherein the communication device is a terminal device,

the communication module is further configured to receive first information from a first device before receiving a plurality of data segments of a transport block from the first device, where the first information includes a number of data segments divided by the transport block and a time-frequency resource range;

the manner in which the communication module receives the plurality of data segments of the transport block from the first device is specifically:

the communication module receives a plurality of data segments of the transport block from a first device over the time-frequency resource range according to the number of data segments.

39. The communication device of claim 31 or 32, wherein the first device is a terminal device, wherein the communication device is an access network device,

the communication module is further configured to send first information to the second device before receiving the plurality of data segments of the transport block from the first device, where the first information includes the number of data segments divided by the transport block and a time-frequency resource range;

the manner in which the communication module receives the plurality of data segments of the transport block from the first device is specifically:

the communication module receives a plurality of data segments of the transport block from a first device over the time-frequency resource range according to the number of data segments.

40. The communication device of claim 34 or 39,

the processing module is further configured to determine the number of data segments that the transmission block needs to divide according to the channel quality or the transmission delay requirement of the physical uplink shared channel PUSCH.

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