CN111800868A - Communication method and device - Google Patents

Abstract

A communication method and device. The method includes: receiving first information from a network device at a first time, where the first information is carried on a first PDCCH, wherein at the first time the first PDCCH uses a first time domain resource allocation set to schedule the first PDSCH, the first The information is used to determine the second time domain resource allocation set for scheduling the second PDSCH after the first time; the first PDCCH carrying the first information also includes the scheduling information of the second PDSCH, and receives data sent by the network device through the first PDSCH; The network device sends the feedback information of the data; and at a second time after the feedback information of the data is sent, the second PDSCH is scheduled according to the second time domain resource allocation set. When performing data scheduling, the present application can clearly indicate the time domain resource allocation set used in different times according to actual needs, so as to take into account the power consumption and transmission delay of the terminal device.

Description

Communication method and device

technical field

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

Background technique

The power consumption of terminal equipment in communication systems is an important aspect of user experience. The 3rd generation partnership project (3GPP) version (Release16) proposes to optimize the power consumption of terminal equipment in new radio (NR) systems. power consumption. One of the contents of optimizing the power consumption of the terminal equipment is to enhance the mechanism of the base station scheduling data. The following will introduce the process of the base station scheduling data of the existing protocol.

In the protocol of 3GPP Release 15, the base station configures the terminal equipment through radio resource control (RRC) signaling or pre-defined physical downlink shared channel (PDSCH) time domain resource allocation between the base station and the terminal equipment. List (time domain resourceallocation list) or physical uplink shared channel (physical uplink shared channel, PUSCH) time domain resource allocation list (or time domain resource allocation set), this time domain resource allocation list contains the physical downlink control channel (physical downlink control channel). The time slot offset between the downlink control channel (PDCCH) and the scheduled PDSCH or the PDCCH and the scheduled PUSCH, and the starting symbol and length of the PDSCH or PUSCH in the time slot. The value of the time slot offset in the time domain resource allocation list can be greater than or equal to 0, and the number of values can be configured multiple times. For example, the time slot offset can be configured as {0, 1, 2, 3, 4, 5, 6}, when the base station actually schedules the terminal equipment, it indicates one of the time slot offsets through the PDCCH, indicating the time domain position of the currently scheduled PDSCH or PUSCH, if the time slot offset indicated by the PDCCH is 0, it means that the scheduled PDSCH or PUSCH and PDCCH are in the same time slot. Because the base station can schedule any value in the time domain resource allocation list, the terminal device can only determine the currently scheduled time slot offset after completing the PDCCH detection. Therefore, the terminal device always assumes the time slot offset indicated by the PDCCH when starting to detect the PDCCH. Possibly the smallest value in the time-domain resource allocation list. If the value in the time domain resource allocation list contains 0, that is, the base station may schedule PDSCH or PUSCH and PDCCH in the same time slot, and even start symbols of PDSCH and PDCCH are the same. For downlink scheduling, the terminal device must buffer the data on the entire bandwidth every time it detects the PDCCH, because it does not know the time-frequency domain resource location of the PDSCH or even whether the PDSCH is scheduled before the PDCCH detection is completed. The power consumption of the terminal equipment is wasted; for the uplink, for the same reason, the terminal equipment does not know the location of the PUSCH scheduled by the PDCCH, or even whether the PUSCH is scheduled. It is possible that the PDCCH and the PUSCH are in the same time slot, which requires the terminal equipment It is necessary to complete the PDCCH detection as soon as possible, otherwise the terminal device will not be able to send the PUSCH data in time, which will also lead to waste of power consumption.

Based on this, it can be set that the time slot offset K of uplink or downlink scheduling does not include 0 (that is, the terminal device already knows that it is a cross-slot scheduling before PDCCH detection), that is, K>x, x is greater than or equal to 0, then the terminal device can start from Save power in the following ways:

Reduce unnecessary buffering, mainly referring to PDSCH buffering;

Relaxing the PDCCH processing time can improve both uplink and downlink scheduling. In terms of terminal equipment implementation, if the PDCCH processing time is very tight, the terminal equipment has relatively high requirements on the clock frequency and voltage, and the power consumption is relatively large. If the PDCCH processing time is sufficient, the terminal has relatively low requirements on the clock frequency and voltage, and the power Consumption is also relatively small.

Although K>x can save the power consumption of the terminal equipment, compared with the time domain resource allocation list containing 0, that is, K>=0 (that is, time slot scheduling), the disadvantage of K>x is that it will increase the delay, that is, when the base station is scheduled There is a certain gap (gap) between PDSCH or PUSCH and PDCCH, which increases transmission delay. Therefore, considering the factors of delay and power consumption, it is necessary to dynamically switch the time-domain resource allocation set used for scheduling. However, the prior art does not provide a solution to reliably and dynamically switch the time-domain resource allocation set.

SUMMARY OF THE INVENTION

The present application provides a communication method and apparatus, so that power consumption and transmission delay of a terminal device can be taken into account when performing data scheduling.

A first aspect provides a communication method, the method comprising: receiving first information from a network device at a first time, the first information is carried on a first physical downlink control channel PDCCH, wherein in the first At a time, the first PDCCH schedules the first physical downlink shared channel PDSCH according to the first time-domain resource allocation set, and the first information is used to determine the second time-domain resource allocation set for scheduling the second PDSCH after the first time ; The first PDCCH carrying the first information also includes scheduling information of the first PDSCH; receiving data sent by the network device through the first PDSCH; sending feedback of the data to the network device and scheduling the second PDSCH according to the second time domain resource allocation set at a second time after the feedback information of the data is sent, wherein the second time is after the first time. In this aspect, when performing data scheduling, it is possible to clearly indicate the time domain resource allocation set to be used at different times according to actual needs, so as to take into account the power consumption and transmission delay of the terminal equipment, and avoid leakage due to the terminal equipment. The problem that the behavior of the base station and the terminal equipment is inconsistent is detected, and the reliability of the dynamic switching time domain resource allocation set is guaranteed.

In one implementation, the first PDCCH carrying the first information does not include scheduling information of the first PDSCH, and the method further includes: sending the feedback information of the first PDCCH to the network device; At a third time after the feedback information of the first PDCCH is sent, the second PDSCH is scheduled according to the second time-domain resource allocation set. In this implementation, in order to prevent the missed detection of the first information, resulting in inconsistent understanding of the scheduling information between the network side and the terminal device side, the new time domain resource allocation set may take effect only after the feedback information of the first PDCCH is sent.

In a second aspect, a communication method is provided, the method comprising: sending first information to a terminal device at a first time, where the first information is carried on a first physical downlink control channel PDCCH, wherein at the first Time the first PDCCH schedules the first physical downlink shared channel PDSCH according to the first time domain resource allocation set, and the first information is used to determine the second time domain resource allocation set for scheduling the second PDSCH after the first time; The first PDCCH carrying the first information further includes scheduling information of the first PDSCH; sending data to the terminal device through the first PDSCH; receiving feedback information of the data from the terminal device and scheduling the second PDSCH according to the second time domain resource allocation set at a second time after the feedback information of the data is received, wherein the second time is after the first time. In this aspect, when performing data scheduling, it is possible to clearly indicate the time domain resource allocation set to be used at different times according to actual needs, thereby taking into account the power consumption and transmission delay of the terminal device.

In one implementation, the first PDCCH carrying the first information does not include scheduling information of the first PDSCH, and the method further includes: receiving feedback information of the first PDCCH from the terminal device; and at a third time after receiving the feedback information of the first PDCCH, schedule the second PDSCH according to the second time domain resource allocation set.

A third aspect provides a communication method, the method comprising: receiving first information from a network device at a first time, wherein the first information is carried on a first physical downlink control channel PDCCH, the first The PDCCH includes scheduling information of the first physical uplink shared channel PUSCH, the first PUSCH is scheduled according to the first time domain resource allocation set at the first time, and the first information is used to determine the scheduling of the first time after the first time. a second time domain resource allocation set of two PUSCHs; according to the scheduling information of the first PUSCH, send data to the network device through the first PUSCH; and within a second time after sending the data, according to the The second time domain resource allocation set schedules the second PUSCH, wherein the second time is after the first time. In this aspect, when performing data scheduling, it is possible to clearly indicate the time domain resource allocation set to be used at different times according to actual needs, so as to take into account the power consumption and transmission delay of the terminal equipment, and avoid leakage due to the terminal equipment. The problem that the behavior of the base station and the terminal equipment is inconsistent is detected, and the reliability of the dynamic switching time domain resource allocation set is guaranteed.

In a fourth aspect, a communication method is provided, the method comprising: sending first information to a terminal device at a first time, wherein the first information is carried in a first physical downlink control channel PDCCH, the first PDCCH Including scheduling information of the first physical uplink shared channel PUSCH, the first PUSCH is scheduled according to the first time domain resource allocation set at the first time, and the first information is used to determine the second time after the first time. A second time-domain resource allocation set for PUSCH; receiving data sent by the terminal device through the first PUSCH; and at a second time after receiving the data, scheduling all resources according to the second time-domain resource allocation set the second PUSCH, wherein the second time is after the first time.

With reference to any aspect or any one implementation of the above first aspect to the fourth aspect, in yet another implementation, the first time domain resource allocation set includes one or more time slot offset values, the time slot offset The value is greater than or equal to 0, the second time domain resource allocation set includes one or more time slot offset values, and the time slot offset value is greater than 0; or the first time domain resource allocation set includes one or more time slot offset values, the time slot offset values are greater than 0, the second time domain resource allocation set includes one or more time slot offset values, and the time slot offset values are greater than or equal to 0.

A fifth aspect provides a communication method, the method comprising: receiving first information from a network device at a first time, wherein the first information is carried in a first physical downlink control channel PDCCH, and in the first For a time, the first PDCCH schedules the first physical downlink shared channel PDSCH or the first physical uplink shared channel PUSCH according to the first time domain resource allocation set; when the bits in the frequency domain resource allocation field of the first PDCCH are all zero, determining a second time-domain resource allocation set for scheduling a second PDSCH or a second PUSCH after the first time according to the bits of the time-domain resource allocation field of the first PDCCH; and at the second time according to the determined The first time domain resource allocation set schedules the second PDSCH or the second PUSCH, wherein the second time is after the first time. In this aspect, when the first information is not used for scheduling, the time domain resource allocation set can be indicated by the bits in the time domain resource allocation field of the first information, so that the time domain resource allocation set used in different times can be clearly indicated according to actual needs. Domain resource allocation set, thus taking into account the power consumption and transmission delay of terminal equipment, and avoiding the problem of inconsistent behavior of base station and terminal equipment caused by missed detection of terminal equipment, ensuring the reliability of dynamic switching time domain resource allocation set.

In one implementation, when the bits of the frequency-domain resource allocation field of the first PDCCH are all zero, it is determined according to the bits of the time-domain resource allocation field of the first PDCCH for scheduling the first time after the first time. The second time-domain resource allocation set of the second PDSCH or the second PUSCH includes: when the bits of the frequency-domain resource allocation field of the first PDCCH are all zero, determining according to the bits of the time-domain resource allocation field of the first PDCCH The minislot offset value or the index of the minislot offset value of the first time domain resource allocation set.

In a sixth aspect, a communication method is provided, the method comprising: sending first information to a terminal device at a first time, wherein the first information is carried in a first physical downlink control channel PDCCH, and in the first When the first PDCCH schedules the first physical downlink shared channel PDSCH or the first physical uplink shared channel PUSCH according to the first time domain resource allocation set, the bits of the frequency domain resource allocation field of the first PDCCH are all zero, and the Bits in the time domain resource allocation field of the first PDCCH are used to determine a second time domain resource allocation set for scheduling the second PDSCH or the second PUSCH after the first time; and at the second time according to the determined first time A time domain resource allocation set schedules the second PDSCH or the second PUSCH, wherein the second time is after the first time.

In a seventh aspect, a communication method is provided, the method comprising: receiving first downlink control information from a network device, wherein the first downlink control information is carried on a first physical downlink control channel PDCCH; and according to The first field of the first downlink control information determines a first minislot offset value, where the first field includes at least one of the following fields: a frequency domain resource allocation field, a time domain resource allocation field, a modulation and coding scheme field, new data indication field or redundancy version field; wherein, the first minimum slot offset value represents the smallest available slot offset value for receiving the physical downlink shared channel PDSCH or sending the physical uplink shared channel PUSCH. In this aspect, the first field of the downlink control information is multiplexed to determine the minislot offset value, and the bits of the control information may not be increased to reduce the overhead of the control information, and the HARQ-ACK feedback may be combined to improve the signaling efficiency. reliability.

In one implementation, the first downlink control information further includes first indication information, where the first indication information is used to indicate that the first field carries indication information of a first minislot offset value. In this implementation, the current multiplexing first field is explicitly indicated by the first indication information, and the first field is used to carry the indication information of the minislot offset value.

In yet another implementation, the determining the minislot offset value according to the first field of the first downlink control information includes: when one or more of the first fields of the first downlink control information When the field is a first set value, obtain the value of the time-domain resource allocation field, where the value of the time-domain resource allocation field is used to indicate the first minislot offset value. In this implementation, when one or more fields in the first fields are the first set value, the value of the time-domain resource allocation field is used to indicate the minislot offset value. It can be understood that, one or more domains in the first domain are the first set value, and the set value corresponding to each domain may be different.

In yet another implementation, the determining the first minislot offset value according to the first field of the first downlink control information includes: when one of the first fields of the first downlink control information or When the multiple fields are the first set value, the preconfigured or predefined first minislot offset value is acquired. In this implementation, when one or more of the first domains is the first set value, the minislot offset value may be a preconfigured or predefined value.

In yet another implementation, the receiving the first downlink control information from the network device includes: receiving the first downlink control information at a first moment, wherein the application moment of the first downlink control information is different earlier than the second moment; the method further includes: receiving second downlink control information at a third moment, wherein the third moment is between the first moment and the second moment, the second downlink control information used to indicate the second minislot offset value, the application time of the second downlink control information is not earlier than the fourth time; and determined according to the first downlink control information and/or the second downlink control information The used minislot offset value and the application moment of the used minislot offset value, wherein the used minislot offset value is the first minislot offset value and the first minislot offset value. One of two minislot offset values, the used application time is not earlier than one of the second time and the fourth time. In this implementation, if the second downlink control information is received before the application time of the first downlink control information, the used minislot offset is determined according to the first downlink control information and/or the second downlink control information value and the application moment of the used minislot offset value to resolve the conflict between the minislot offset values indicated by multiple downlink control information.

In yet another implementation, the first domain is a frequency domain resource allocation domain, and the method further includes: determining a first minislot offset value according to the first domain of the first downlink control information, including: if The frequency domain resource allocation mode is the frequency domain resource allocation mode type 0. When the bits in the frequency domain resource allocation field are all 0, the bits in the time domain resource allocation field indicate the first minislot offset value. ; If the frequency domain resource allocation mode is the frequency domain resource allocation mode type 1, when the bits in the frequency domain resource allocation domain are all 1, the bits in the time domain resource allocation domain indicate the first minimum slot offset shift value.

In yet another implementation, the method further includes: receiving first configuration information from the network device, where the first configuration information includes the configured frequency domain resource allocation manner.

In an eighth aspect, a communication method is provided, the method comprising: sending first downlink control information, wherein the first downlink control information is carried on a first physical downlink control channel PDCCH, the first downlink control information The first field of the control information is used to determine the first minislot offset value, wherein the first field includes at least one of the following fields: a frequency-domain resource allocation field, a time-domain resource allocation field, a modulation and coding mode field, a new data field In the indication field or the redundancy version field, the first minimum time slot offset value is used to indicate the minimum available time slot offset value for sending the physical downlink shared channel PDSCH or receiving the physical uplink shared channel PUSCH.

In one implementation, the first downlink control information further includes first indication information, where the first indication information is used to indicate that the first field carries indication information of a first minislot offset value.

In yet another implementation, the sending the first downlink control information includes: sending the first downlink control information at a first moment, wherein the application moment of the first information is not earlier than the second moment; The method further includes: sending and receiving second downlink control information at a third moment, wherein the third moment is between the first moment and the second moment, and the second downlink control information is used to indicate the second most A minislot offset value, the application moment of the second downlink control information is not earlier than the fourth moment; and determining the used minislot offset according to the first downlink control information and/or the second downlink control information an offset value and an application moment of the used minislot offset value, wherein the used minislot offset value is the first minislot offset value and the second minislot offset One of the values, the used application time is not earlier than one of the second time and the fourth time.

In yet another implementation, the first domain is a frequency domain resource allocation domain, and the first domain of the first downlink control information is used to determine a first minislot offset value, including: if the frequency domain resource The allocation mode is the frequency domain resource allocation mode type 0. When the bits in the frequency domain resource allocation field are all 0, the bits in the time domain resource allocation field indicate the first minislot offset value; The domain resource allocation mode is frequency domain resource allocation mode type 1. When the bits in the frequency domain resource allocation domain are all 1, the bits in the time domain resource allocation domain indicate the first minislot offset value.

In yet another implementation, the method further includes: sending first configuration information, where the first configuration information includes the configured frequency domain resource allocation manner.

In a ninth aspect, a communication method is provided, the method comprising: receiving downlink control information on a first bandwidth part BWP, wherein the downlink control information includes a time slot offset value and BWP identification indication information; When the BWP identification indication information indicates the second BWP, the timeslot offset value is used as the minimum timeslot offset value of the second BWP. In this aspect, when the BWP is dynamically switched, the minislot offset value of the target BWP can be indicated at the same time, no new bits need to be added, and the scheduling opportunity is not affected to reduce the transmission delay. When the BWP does not switch, there is no need to add a new bit field, and the minislot offset value can be updated from a larger value to a smaller value without affecting the scheduling opportunity and reducing the transmission delay.

In one implementation, the downlink control information is further used to indicate that a physical downlink shared channel PDSCH is received or a physical uplink shared channel PUSCH is sent on the second BWP at a first moment, where the first moment is the downlink control information The receive slot plus the slot offset value of the slot in which the slot is located.

In yet another implementation, the method further includes: when the BWP identification indication information indicates the first BWP, if the time slot offset value is smaller than the minimum time slot offset value of the first BWP, at the second receiving the PDSCH or sending the PUSCH at a time, and the second time is the time slot where the receiving time slot of the downlink control information plus the minimum time slot offset value of the first BWP is located; and The slot offset value is used as the new minimum slot offset value of the first BWP. In this implementation, if the BWP does not switch, if the time slot offset value carried in the downlink control information is smaller than the minislot offset value of the first BWP, data transmission is still performed according to the minislot offset value of the first BWP. , and then use the time slot offset value carried in the downlink control information as the new minimum time slot offset value of the first BWP.

In yet another implementation, the method further includes: when the BWP identification indication information indicates the second BWP, if the time slot offset value is less than the time delay required for BWP handover, in the reception of the downlink control information The PDSCH is received or the PUSCH is sent on the time slot plus the time slot where the time delay required for the BWP handover is located. In this implementation, if the time slot offset value carried by the downlink control information is less than the time delay required for the BWP handover, it is necessary to perform data transmission after the BWP handover is completed, and then add the received time slot of the downlink control information to the time slot of the BWP handover. Data transmission is performed on the time slot where the time delay is required to ensure that the minimum time slot offset value of the second BWP is indicated and the scheduling opportunity is not affected.

In a tenth aspect, a communication method is provided, the method comprising: sending downlink control information on a first bandwidth part BWP, wherein the downlink control information includes a time slot offset value and BWP identification indication information; When the BWP identification indication information indicates the second BWP, the timeslot offset value is used as the minimum timeslot offset value of the second BWP.

In one implementation, the downlink control information is further used to instruct to send a physical downlink shared channel PDSCH or receive a physical uplink shared channel PUSCH on the second BWP at a first moment, where the first moment is the downlink control information The receive slot plus the slot offset value of the slot in which the slot is located.

In yet another implementation, the method further includes: when the BWP identification indication information indicates the first BWP, if the time slot offset value is smaller than the minimum time slot offset value of the first BWP, at the second Sending the PDSCH or receiving the PUSCH at a time, and the second time is the time slot where the receiving time slot of the downlink control information plus the minimum time slot offset value of the first BWP is located; and The slot offset value is used as the new minimum slot offset value of the first BWP.

In yet another implementation, the method further includes: when the BWP identification indication information indicates the second BWP, if the time slot offset value is less than the time delay required for BWP handover, in the reception of the downlink control information The PDSCH is sent or the PUSCH is received on the time slot plus the time slot where the time delay required for the BWP handover is located.

In an eleventh aspect, a communication apparatus is provided, which can implement the first aspect, the third aspect, the fifth aspect, the seventh aspect, the ninth aspect or any one of the implemented communication methods. For example, the communication device may be a chip (such as a baseband chip, or a communication chip, etc.) or a terminal device. The above method can be implemented by software, hardware, or by hardware executing corresponding software.

In a possible implementation manner, the structure of the communication apparatus includes a processor and a memory; the processor is configured to support the apparatus to perform the corresponding functions in the above communication method. The memory is used for coupling with the processor, which holds the necessary programs (instructions) and/or data for the apparatus. Optionally, the communication apparatus may further include a communication interface for supporting communication between the apparatus and other network elements.

In another possible implementation manner, the communication apparatus may include unit modules that perform corresponding functions or actions in the above method.

In yet another possible implementation, it includes a processor and a transceiver, the processor is coupled to the transceiver, and the processor is configured to execute a computer program or instruction to control the transceiver to receive and transmit information. Send; when the processor executes the computer program or instructions, the processor is further configured to implement the above method. Exemplarily, the transceiving device may be a transceiver, a transceiving circuit or an input/output interface. When the communication device is a chip, the transceiver device is a transceiver circuit or an input and output interface.

When the communication device is a chip, the sending unit may be an output unit, such as an output circuit or a communication interface; the receiving unit may be an input unit, such as an input circuit or a communication interface. When the communication apparatus is a network device, the sending unit may be a transmitter or a transmitter; the receiving unit may be a receiver or a receiver.

In a twelfth aspect, a communication apparatus is provided, which can implement the second aspect, the fourth aspect, the sixth aspect, the eighth aspect, the tenth aspect, or any one of the implemented communication methods. For example, the communication device may be a chip (such as a baseband chip, or a communication chip, etc.) or a network device, and the above method may be implemented by software, hardware, or by executing corresponding software by hardware.

In a possible implementation manner, the structure of the communication apparatus includes a processor and a memory; the processor is configured to support the apparatus to perform the corresponding functions in the above communication method. The memory is used for coupling with the processor, which holds the necessary programs (instructions) and data for the apparatus. Optionally, the communication apparatus may further include a communication interface for supporting communication between the apparatus and other network elements.

In another possible implementation manner, the communication apparatus may include a unit module that performs the corresponding actions in the above method.

In yet another possible implementation, it includes a processor and a transceiver, the processor is coupled to the transceiver, and the processor is configured to execute a computer program or instruction to control the transceiver to receive and transmit information. Send; when the processor executes the computer program or instructions, the processor is further configured to implement the above method. Exemplarily, the transceiving device may be a transceiver, a transceiving circuit or an input/output interface. When the communication device is a chip, the transceiver device is a transceiver circuit or an input and output interface.

When the communication device is a chip, the receiving unit may be an input unit, such as an input circuit or a communication interface; the sending unit may be an output unit, such as an output circuit or a communication interface. When the communication device is a terminal device, the receiving unit may be a receiver (also referred to as a receiver); the transmitting unit may be a transmitter (also referred to as a transmitter).

It can be understood that, in this embodiment of the present application, the hardware parts responsible for input and output in the communication device may be integrated together.

In a thirteenth aspect, a computer-readable storage medium is provided, and instructions are stored in the computer-readable storage medium, which, when executed on a computer, cause the computer to perform the methods described in the above aspects.

A fourteenth aspect provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the methods of the above aspects.

A fifteenth aspect provides a communication system, comprising any of the foregoing communication apparatuses on the network equipment side, and/or any communication apparatuses on the terminal equipment side.

Description of drawings

The accompanying drawings required to be used in the embodiments of the present application or the background technology will be described below.

1 is a schematic diagram of a communication system involved in the application;

FIG. 2 is a schematic flowchart of a communication method provided by an embodiment of the present application;

3 is an exemplary schematic diagram of a time domain resource allocation set switching;

FIG. 4 is a schematic diagram of another exemplary time-domain resource allocation set switching;

FIG. 5 is a schematic diagram of another exemplary time-domain resource allocation set switching;

FIG. 6 is a schematic flowchart of another communication method provided by an embodiment of the present application;

FIG. 7 is a schematic diagram of another exemplary time-domain resource allocation set switching;

FIG. 8 is a schematic flowchart of another communication method provided by an embodiment of the present application;

9a is a schematic diagram of indicating a time-domain resource allocation set by bits in a time-domain resource allocation field of DCI;

9b is a schematic diagram of indicating PDSCH or PUSCH frequency domain resources through RIV;

10 is a schematic flowchart of another communication method provided by an embodiment of the present application;

11 is a schematic flowchart of another communication method provided by an embodiment of the present application;

12 is a schematic diagram of the application of downlink control information;

FIG. 13 is a schematic flowchart of another communication method provided by an embodiment of the present application;

Fig. 14 is the schematic diagram of bandwidth part switching;

FIG. 15 is a schematic structural diagram of a communication device according to an embodiment of the present application;

FIG. 16 is a schematic structural diagram of another communication device provided by an embodiment of the present application;

FIG. 17 is a schematic structural diagram of a simplified terminal device provided by an embodiment of the present application;

FIG. 18 is a schematic structural diagram of a simplified network device provided by an embodiment of the present application.

Detailed ways

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

FIG. 1 is a schematic diagram of a communication system involved in the present application. The communication system may include at least one network device 100 (only one is shown) and one or more terminal devices 200 connected to the network device 100 .

The network device 100 may be a device capable of communicating with the terminal device 200 . The network device 100 may be any device with a wireless transceiver function. Including but not limited to: base station NodeB, evolved base station eNodeB, base station in fifth generation (5G) communication system, base station or network equipment in future communication system, access node in WiFi system, wireless relay node , wireless backhaul node, etc. The network device 100 may also be a wireless controller in a cloud radio access network (cloud radio access network, CRAN) scenario. The network device 100 may also be a small station, a transmission reference point (TRP), or the like. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device.

The terminal device 200 is a device with wireless transceiver function, which can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water, such as ships; it can also be deployed in the air, such as aircraft , balloons, and satellites. The terminal device may be a mobile phone (mobile phone), a tablet computer (pad), a computer with a wireless transceiver function, a virtual reality (virtual reality, VR) terminal device, an augmented reality (augmented reality, AR) terminal device, an industrial control ( Wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grid, transportation safety wireless terminals, wireless terminals in smart cities, wireless terminals in smart homes, and so on. The embodiments of the present application do not limit application scenarios. Terminal equipment may also sometimes be referred to as user equipment (UE), access terminal equipment, UE unit, mobile station, mobile station, remote station, remote terminal equipment, mobile equipment, terminal, wireless communication device, UE Proxy or UE device etc.

It should be noted that the terms "system" and "network" in the embodiments of the present application may be used interchangeably. "Plurality" refers to two or more than two, and in view of this, "plurality" may also be understood as "at least two" in the embodiments of the present application. "And/or", which describes the association relationship of the associated objects, means that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, A and B exist at the same time, and B exists alone.

FIG. 2 is a schematic flowchart of a communication method provided by an embodiment of the present application, including the following steps:

S101. The network device sends first information to the terminal device at the first time.

Accordingly, the terminal device receives the first information.

Wherein, the first information is carried in the first PDCCH. For example, the first information is downlink control information (downlink control information, DCI). Wherein, at the first time, the first PDCCH schedules the first PDSCH according to the first time domain resource allocation set.

As shown in FIG. 3 , as a schematic diagram of a time domain resource allocation set switching, at the first time, DCI1 is the above-mentioned first information. The DCI1 is carried on the first PDCCH. At the first time, the first PDCCH is scheduled using the time domain resource allocation set 1, that is, the time domain resource allocation set valid at the first time is the time domain resource allocation set 1, and the DCI1 carries the scheduling information of PDSCH1, including PDSCH1. Time slot offset, the time slot offset of PDSCH1 is a value in time domain resource allocation set 1. For example, the time slot offset values of time domain resource allocation set 1 are all greater than 0, that is, the first PDCCH is scheduled across time slots.

In this embodiment, the first information is used to determine the second time domain resource allocation set for scheduling the second PDSCH after the first time. That is, the first information is used to indicate that the value range of the time slot offset for scheduling the second PDSCH by the second PDCCH after the first time has changed, for example, the time slot offset after the first time includes 0. As shown in FIG. 3 , DCI1 schedules PDSCH1, and at the same time indicates that PDCCH scheduling PDSCH can be scheduled at the same time slot after the first time. That is, the first time domain resource allocation set includes a value whose time slot offset value is greater than or equal to 0. In this embodiment, the first information is used to determine that the value range of the time slot offset of the PDSCH has changed when the second PDCCH schedules the PDSCH after the first time. The specific indication method is not limited. The first information may be a display indication or Implicit indication; it can indicate the minimum value of the slot offset, or the index value corresponding to the minimum slot offset. The time domain resource allocation set in the present invention can also be embodied as the minimum value of the time slot offset.

S102. The first PDCCH carrying the first information further includes scheduling information of the first PDSCH, and the network device sends data to the terminal device through the first PDSCH.

Accordingly, the terminal device receives the data.

In this embodiment, the first PDCCH carrying the first information further includes scheduling information of the first PDSCH. Therefore, according to the scheduling information, the network device sends data to the terminal device through the first PDSCH.

As shown in FIG. 3 , at the first time, the first PDCCH carrying DCI1 is also used for scheduling PDSCH1, and the network device sends data to the terminal device through PDSCH1. In addition, DCI2 still schedules PDSCH2 according to time domain resource allocation set 1, and the network device sends data to the terminal device on PDSCH2.

S103. The terminal device sends data feedback information to the network device.

Correspondingly, the network device receives feedback information of the data.

After receiving the data sent by the network device through the first PDSCH, the terminal device needs to send feedback information to the network device. The feedback information includes a correct response (acknowledgement, ACK) and an error response (non-acknowledgement, NACK), indicating whether the terminal device The data sent by PDSCH is correctly received.

As shown in FIG. 3 , for the data sent by the network device on PDSCH1, the terminal device sends NACK1 to the network device; for the data sent by the network device on PDSCH2, the terminal device sends ACK2 to the network device.

S104. At a second time after the feedback information of the data of the first PDSCH is sent, schedule the second PDSCH according to the second time domain resource allocation set, where the second time is after the first time.

In this embodiment, no matter whether the feedback message corresponding to the first PDSCH is ACK or NACK, after the network device receives the feedback information corresponding to the first PDSCH sent by the terminal device, that is, after the terminal device has sent the feedback of the data of the first PDSCH At the second time after the information, the second PDCCH schedules the second PDSCH according to the second time domain resource allocation set. It should be noted that the second PDSCH may be one or more, and the second PDSCH refers to all PDSCHs scheduled within the second time. Since the network device receives the feedback information sent by the terminal device, the network device can determine that the terminal device has received the above-mentioned first information, that is, the terminal device does not miss the PDCCH carrying the first information, and the first information is used to determine after the first time The second PDCCH schedules the second time-domain resource allocation set of the second PDSCH, then the terminal device and the network device can simultaneously validate the PDSCH time-domain resource allocation set as the second time-domain resource allocation set after the feedback information of the first PDSCH data .

As shown in FIG. 3 , after the terminal device has sent NACK1, the second PDCCH can be scheduled using time-domain resource allocation set 2, that is, after NACK1 is sent, the effective time-domain resource allocation set is time-domain resource allocation set 2 , that is, the time slot scheduling is included when the second PDCCH schedules the PDSCH. For example, DCI3 and PDSCH3 are time slot scheduling.

In addition, the first PDCCH carrying the first information may not include scheduling information of the first PDSCH. In another embodiment, S102 and S103 may be replaced by: the terminal device sends feedback information of the first PDCCH to the network device. Indicates that the terminal device receives the first information.

S104 may be replaced with: at a third time after the feedback information of the first PDCCH is sent, schedule the second PDSCH according to the second time-domain resource allocation set.

In this alternative embodiment, if the first PDCCH carrying the first information does not include the scheduling information of the first PDSCH, in order to prevent the first information from being missed, the terminal device may send the feedback information of the first PDCCH to the network device, At a third time after the feedback information of the first PDCCH is sent, the second PDSCH is scheduled according to the second time-domain resource allocation set. For the implementation process, reference may be made to the foregoing embodiments.

In addition, after the network device instructs to switch the time domain resource allocation set through DCI, before the first information takes effect, that is, before the terminal device sends the feedback message, the network device still uses the current time domain resource allocation set for scheduling, for example, as shown in Figure 3 The cross-slot scheduling represented by set 1 in the set 1 in the After the feedback message of the first PDSCH or the feedback message of the first PDCCH. For example, as shown in FIG. 4 , the scheduling of DCI2 still conforms to set 1, but the scheduled PDSCH2 is after the effective time, which is not desirable. Instead, the scheduling of DCI2 in Figure 3 should still conform to set 1, and the scheduled PDSCH2 should be before the effective time, so that the network device and the terminal device can truly implement time slot scheduling immediately after the signaling takes effect.

The reason for the above constraints is that the current protocol does not support scheduling out-of-order, that is, for two HARQ processes, if the end symbol position of DCI3 is not earlier than the end symbol position of DCI2, and the start symbol position of PDSCH3 is earlier than the end symbol position of PDSCH2 , this scheduling is not supported. Therefore, if the PDSCH cannot be scheduled by the PDCCH in the time period after the first information indication and before the first information takes effect, if the PDSCH cannot be scheduled after the first information takes effect, and the DCI2 in FIG. 5 schedules the PDSCH2, then even if The handover signaling takes effect, and DCI3 cannot schedule PDSCH3 in the same time slot.

It should be noted that, in this embodiment, if the terminal device is scheduling across time slots, and the time slot offset values in the instant domain resource allocation set are all greater than 0, once the terminal device sends a scheduling request to the network device (scheduling request, SR), the terminal device falls back to the default configuration of the time domain resource allocation set of the PDSCH, that is, the slot offset value may include 0, and it may be scheduled at the same time slot. After the network device receives the SR sent by the terminal device, the network device also falls back to the default time domain resource allocation set, that is, the slot offset includes 0, and the time slot scheduling can be performed.

According to a communication method provided by the embodiment of the present application, when performing data scheduling, it is possible to clearly indicate the time domain resource allocation set to be used at different times according to actual needs, thereby taking into account the power consumption and transmission delay of the terminal device, At the same time, the problem of inconsistent behavior of network equipment and terminal equipment due to missed detection of the terminal equipment is avoided, and the reliability of the dynamic switching time domain resource allocation set is guaranteed.

FIG. 6 is a schematic flowchart of another communication method provided by an embodiment of the present application, including the following steps:

S201. The network device sends first information to the terminal device at the first time.

Accordingly, the terminal device receives the first information.

The first information is carried on the first PDCCH, the first PDCCH carrying the first information also includes scheduling information of the first PUSCH, the first PUSCH is scheduled according to the first time domain resource allocation set at the first time, and the first information is used for A second time domain resource allocation set for scheduling the second PUSCH after the first time is determined.

S202. The terminal device sends data to the network device through the first PUSCH according to the scheduling information of the first PUSCH. The slot offset of the first PUSCH is a value in the first time domain resource allocation set.

Accordingly, the network device receives the data.

S203. At a second time after the data of the first PUSCH is sent, schedule the second PUSCH according to the second time domain resource allocation set, where the second time is after the first time.

Different from the embodiment shown in FIG. 2 , the first information is used to determine a time-domain resource allocation set for uplink scheduling. For uplink scheduling, since there is no HARQ-ACK feedback, after the terminal device sends the PUSCH to the network device, the network device will not send HARQ-ACK information to the terminal device, then the first PDCCH at the first time is allocated according to the first time domain resource If the first PUSCH is collectively scheduled, the terminal device may schedule the second PUSCH according to the second time domain resource allocation set at a second time after sending data through the first PUSCH.

The first time-domain resource allocation set is a set different from the above-mentioned second time-domain resource allocation set. For example, at the first time, the first PDCCH schedules the first PUSCH according to the first time-domain resource allocation set, and the time slot offset value in the first time-domain resource allocation set is greater than or equal to 0, that is, time-slot scheduling is possible; In the second time, the time slot offset values in the second time domain resource allocation set are all greater than 0, that is, cross-slot scheduling is possible, but time-slot scheduling is not possible. Or conversely, at the first time, the first PDCCH is scheduled according to the first time-domain resource allocation set, and the time slot offset value in the first time-domain resource allocation set is greater than 0, that is, it can be scheduled across time slots, but not between time slots. Scheduling; at the second time, the time slot offset value in the second time domain resource allocation set is greater than or equal to 0, that is, time slot scheduling is possible. The first time domain resource allocation set may also be a subset of the second time domain resource allocation set, or the second time domain resource allocation set may also be a subset of the first time domain resource allocation set.

In this embodiment, the first information is used to determine that the value range of the time slot offset for scheduling the second PUSCH has changed after the first time. The specific indication method is not limited. The first information may be an explicit indication or an implicit indication. ; can indicate the minimum value of the time slot offset, and can also indicate the index value corresponding to the minimum value of the time slot offset. The time domain resource allocation set in the present invention can also be expressed as the minimum value of the time slot offset.

As shown in another schematic diagram of time domain resource allocation set switching shown in Figure 7, the first PDCCH carrying DCI1 at the first time is scheduled according to time domain resource allocation set 1, for example, PUSCH1 is scheduled, and the time slot offset of PUSCH1 is the time domain resource allocation A value in set 1, that is, a valid time domain resource allocation set is time domain resource allocation set 1. In this embodiment, the time domain offset value K in the time domain resource allocation set 1 is greater than 0. For example, at the first time, DCI1 schedules PUSCH1 for cross-slot scheduling, and DCI2 schedules PUSCH2 for cross-slot scheduling. The DCI1 indicates that the second time uses the resource allocation set 2, that is, indicates that the second time is switched to time slot scheduling. After the terminal device sends PUSCH1, the indication takes effect. Then, the PUSCH is scheduled according to the time domain resource allocation set 2 at the second time. For example, the PDCCH carrying DCI3 is scheduled according to the time domain resource allocation set 2 to schedule the PUSCH3. Instant domain resource allocation set 2 is valid. In this example, the time domain offset value K in the time domain resource allocation set 2 is greater than or equal to 0. For example, DCI3 and PUSCH3 may be scheduled at the same time slot. The second time is after the first time.

It should be noted that, in this embodiment, if the terminal device is scheduling across time slots, and the time slot offset values in the instant domain resource allocation set are all greater than 0, once the terminal device sends a scheduling request to the network device, the terminal device Falling back to the default configuration of the time domain resource allocation set of PDSCH, that is, the slot offset value may include 0, and it may be scheduled at the same time slot. After the network device receives the SR sent by the terminal device, the network device also falls back to the default time domain resource allocation set, that is, the slot offset includes 0, and the time slot scheduling can be performed.

According to a communication method provided by the embodiment of the present application, when performing data scheduling, it is possible to clearly indicate the time domain resource allocation set to be used at different times according to actual needs, thereby taking into account the power consumption and transmission delay of the terminal device, At the same time, the problem of inconsistent behavior of network equipment and terminal equipment due to missed detection of the terminal equipment is avoided, and the reliability of the dynamic switching time domain resource allocation set is guaranteed.

FIG. 8 is a schematic flowchart of another communication method provided by an embodiment of the present application, including the following steps:

S301. The network device sends first information to the terminal device at the first time.

Accordingly, the terminal device receives the first information.

Wherein, the first information is carried in the first PDCCH. The first PDCCH schedules the first PDSCH according to the first time domain resource allocation set at the first time. For example, the first information is DCI. The DCI adopts an existing UE-specific DCI format (DCI format).

S302. When the bits in the frequency domain resource assignment (frequency domain resource assignment) field of the first PDCCH are all zero, the terminal device determines, according to the bits in the time domain resource assignment (time domain resource assignment) field of the first PDCCH, the first time The second time domain resource allocation set of the second PDSCH or the second PUSCH is scheduled later.

The terminal device parses the DCI of the PDCCH to obtain bits in the frequency domain resource allocation domain and bits in the time domain resource allocation domain. When the DCI is used to schedule PDSCH or PUSCH, the bits in the frequency domain resource allocation field of the DCI are not all zero, that is, PDSCH or PUSCH needs to occupy certain frequency domain resources, and the terminal device may consider the first information to be normal scheduling information , then the bits in the time domain resource allocation field represent the time domain position of the currently scheduled PDSCH or PUSCH.

When the bits of the frequency domain resource allocation field of the first information are all zero, it can be considered that the first information is not the scheduling information of the current PDSCH or PUSCH, then the bits of the time domain resource allocation field represent the above-mentioned second time domain resource allocation set.

The above-mentioned first time-domain resource allocation set may also be a subset of the second time-domain resource allocation set, or, the second time-domain resource allocation set may also be a subset of the first time-domain resource allocation set.

Specifically, the bits of the time domain resource allocation field represent the minislot offset value or the index of the minislot offset value of the second time domain resource allocation set. Then S302 includes: when the bits of the frequency domain resource allocation field of the first PDCCH are all zero, determining the minimum slot offset value or the minimum slot offset value of the second PDSCH or the second PUSCH according to the bits of the time domain resource allocation field of the first PDCCH. Index of the minislot offset value. For example, when the bits in the time domain resource allocation field indicate that the minimum slot offset value is 0, it can be determined that the time slot offset value in the second time domain resource allocation set is greater than or equal to 0; the bits in the time domain resource allocation field indicate When the minimum time slot offset value is a value greater than 0, it can be determined that the time slot offset value in the second time domain resource allocation set is greater than 0.

Frequency domain resource allocation takes Type0 as an example. A bitmap is used to indicate the resource block group (RBG) allocated to the terminal device (one RBG can be composed of multiple RBs). If a certain RBG is allocated to If a terminal device is selected, the corresponding bit in the bitmap is set to 1; otherwise, it is set to 0.

For example, RBGSize=2, there are 13 RBGs in total, and if the corresponding BitMap field is 0000111111011B (binary), the occupied RBGs are shown in Figure 9a. FIG. 9a is a schematic diagram of indicating PDSCH or PUSCH frequency domain resources through the frequency domain resource allocation field of DCI. If the PDSCH/PUSCH is scheduled by DCI, at least one RB should be indicated in the frequency domain, and at least one non-0 in the bitmap. On the contrary, if the terminal device detects that the frequency domain resource allocation bitmap of the DCI is all 0, that is, 0000000000000, then the terminal device considers that the DCI is used to determine the first time domain resource allocation for scheduling the second PDSCH or the second PUSCH after the first time. Set, the field of the corresponding time domain resource allocation field is understood as the minislot offset or the index corresponding to the minislot offset.

S303. Schedule the second PDSCH or the second PUSCH according to the determined second time domain resource allocation set at the second time, where the second time is after the first time.

At the second time, the second PDCCH is scheduled according to the second time domain resource allocation set determined above. The second time-domain resource allocation set may be a set different from the above-mentioned first time-domain resource allocation set. For example, at the first time, scheduling is performed according to the first time-domain resource allocation set, and the time slot offset value in the first time-domain resource allocation set is greater than or equal to 0, that is, time-slot scheduling is possible; at the second time, the second The time slot offset value in the time domain resource allocation set is greater than 0, that is, it can be scheduled across time slots. Or conversely, at the first time, the first PDCCH is scheduled according to the first time-domain resource allocation set, and the time slot offset value in the first time-domain resource allocation set is greater than 0, that is, it can be scheduled across time slots; at the second time , the time slot offset value in the second time domain resource allocation set is greater than or equal to 0, that is, time slot scheduling is possible.

In this embodiment, the first information is used to determine that the value range of the time slot offset for scheduling the second PDSCH has changed after the first time. The specific indication method is not limited. The first information may be an explicit indication or an implicit indication. ; can indicate the minimum value of the time slot offset, and can also indicate the index value corresponding to the minimum value of the time slot offset. The time domain resource allocation set in the present invention can also be embodied as the minimum value of the time slot offset.

According to a communication method provided by an embodiment of the present application, when the first information is not used for scheduling, the time-domain resource allocation set can be indicated by the bits in the time-domain resource allocation field of the first information, so that a clear indication can be made according to actual needs. The time domain resource allocation set adopted at different times, thus taking into account the power consumption and transmission delay of the terminal equipment, and avoiding the problem of inconsistent behavior between network equipment and terminal equipment due to the missed detection of the terminal equipment, ensuring dynamic switching of the time domain. Reliability of resource allocation sets.

Generally, the first field of the downlink control information is used for data scheduling. In this application, the first field of the downlink control information can be multiplexed to determine the minislot offset value.

FIG. 10 is a schematic flowchart of another communication method provided by an embodiment of the present application. Exemplarily, the method may include the following steps:

S401. The network device sends downlink control information to the terminal device.

Correspondingly, the terminal device receives the downlink control information.

The downlink control information is carried on the PDCCH.

S402. The terminal device determines a minislot offset value according to the first field of the downlink control information.

The downlink control information has a corresponding first field. If the downlink control information is used for data scheduling, the first field may be called an uplink grant field (scheduling PUSCH) or a downlink allocated field (scheduling PDSCH). In the present application, the downlink control information is not used for data scheduling, but the first field is multiplexed to determine the mini-slot offset value, which may also be referred to as the minimum value of the timeslot offset. The minimum slot offset value represents the minimum available slot offset value (minimum K0) for receiving PDSCH or the minimum available slot offset value (minimum K2) for sending PUSCH, that is, when there is actual scheduling, The network device uses the minislot offset to schedule PDSCH or PUSCH, that is, when the network device schedules PDSCH or PUSCH, the time slot offset value of the PDSCH or PUSCH is greater than or equal to the minimum slot offset value, and the terminal device receives The slot offset value for PDSCH or PUSCH transmission is greater than or equal to the minimum slot offset value. The minimum slot offset value may also represent the minimum available slot offset value for receiving aperiodic CSI-RS, the minimum available slot offset value for aperiodic SRS, or the minimum available slot offset value for HARQ-ACK feedback corresponding to PDSCH. Available slot offset values.

The above-mentioned first domain includes at least one of the following domains: a frequency domain resource allocation domain, a time domain resource allocation domain, a modulation and coding scheme (MCS) domain, a new data indicator (NDI) domain or a redundant domain Redundancy version (RV) field.

Optionally, the downlink control information further includes first indication information, where the first indication information is used to indicate that the first field carries indication information of a minislot offset value. That is, it can be explicitly indicated that the first field of the downlink control information is used for determining the minislot offset value, rather than being used for data scheduling. For example, the first indication information is a 1-bit value. When the first indication information is in the first state, it indicates that the first field is used to determine the minislot offset value; when the first indication information is in the second state, it indicates that the first field is used to determine the minislot offset value. A field is used for data scheduling.

Of course, the first field of the above-mentioned downlink control information may also be implicitly indicated to be used for determining the minislot offset value instead of being used for data scheduling. For example, if the first field of the downlink control information is a set value, it can be determined that the first field of the downlink control information is used to determine the minislot offset value.

Specifically, in one implementation, S402 includes: when one or more fields in the first fields of the downlink control information are a first set value, acquiring the value of the time-domain resource allocation field, and the time The value of the field resource allocation field is used to indicate the minislot offset value. In this implementation, the value of the time domain resource allocation field can take different values, and different values correspond to different minislot offset values. For example, when the value of the frequency-domain resource allocation field is a pre-configured or predefined specific value, the value of the time-domain resource allocation field represents minimum K0 or minimum K2. For different frequency-domain resource allocation methods, the frequency-domain resource allocation The specific value of the allocation domain is different, and the specific cases can be as follows:

a) The network side device only configures the frequency domain resource allocation mode type 0 (type0) through RRC signaling, and uses a bitmap (bitmap) to indicate the resource block group (RBG) allocated to the terminal device (one RBG) It can be composed of multiple RBs), and each bit corresponds to one RBG. If a certain RBG is allocated to a certain terminal device, the corresponding bit in the bitmap is set to 1; otherwise, it is set to 0. As shown in FIG. 9a, RBG4-RBG9 and RBG11-RBG12 are allocated to a certain terminal device, and the bits are set to 1, and the remaining bits are set to 0. The number of bits in the frequency domain resource allocation field of type 0 is N _RBG , and N _RBG is equal to the number of RBGs of the activated uplink BWP or the activated downlink BWP. As shown in Figure 9a, N _RBG =13. When the N _RBG bits are all 0, the bits in the time domain resource allocation field indicate minimum K0 or minimum K2, for example, N _RBG =13, and the bitmap is equal to 0000000000000.

表示激活的上行BWP或者激活的下行BWP的RB数。如图9b所示，

则

当

个比特全为1时，则时域资源分配域的比特指示minimum K0或者minimum K2。以

为例，频域资源分配域的比特数的7个比特为1111111。如果所述下行控制信息中还存在频域跳频标识(frequency hopping flag)域，则将频域跳频标识域的比特设置为“去使能(disabled)”。b) The network side equipment is only configured with frequency domain resource allocation mode type 1 (type1) through RRC signaling, and allocates several consecutive resource blocks (RBs) to the terminal equipment, and performs resource allocation in units of RBs. The resource block start position RB _start and the number of consecutively allocated RBs L _RB are indicated by a resource indication value (RIV). FIG. 9b is a schematic diagram of indicating PDSCH or PUSCH frequency domain resources through RIV. The number of bits in the frequency domain resource allocation field of type1 is

Indicates the number of RBs of the activated uplink BWP or the activated downlink BWP. As shown in Figure 9b,

but

when

When the bits are all 1, the bits in the time domain resource allocation field indicate minimum K0 or minimum K2. by

For example, 7 bits of the number of bits in the frequency domain resource allocation field are 1111111. If the downlink control information also has a frequency-domain frequency hopping flag (frequency hopping flag) field, set the bit of the frequency-domain frequency hopping flag field to "disabled".

频域资源分配域的最高有效位(most significant bit,MSB)的1比特可以动态指示当前频域资源分配方式是type0还是type1，MSB的1比特为“0”表示当前是频域资源分配方式type0，MSB的1比特为“1”表示当前是频域资源分配方式type1。如果动态指示的频域资源分配方式为type0，最低有效位(least significant bit,LSB)的N_RBG个比特或者LSB的

个比特全为0时，则时域资源分配域的比特指示minimum K0或者minimum K2。如果动态指示的频域资源分配方式为type1，LSB的

个比特或者LSB的

个比特全为1时，则时域资源分配域的比特指示minimum K0或者minimum K2。如果所述下行控制信息中还存在频域跳频标识域，则将频域跳频标识域的比特设置为“去使能”。c) The network side device configures the frequency domain resource allocation mode type0 and the frequency domain resource allocation mode type1 through RRC signaling, then the number of bits in the frequency domain resource allocation field is

One bit of the most significant bit (MSB) of the frequency domain resource allocation field can dynamically indicate whether the current frequency domain resource allocation mode is type0 or type1, and 1 bit of the MSB is "0" to indicate that the current frequency domain resource allocation mode is type0 , 1 bit of the MSB is "1", indicating that the current frequency domain resource allocation mode is type1. If the dynamically indicated frequency domain resource allocation method is type 0, the least significant bit (LSB) of N _RBG bits or the LSB

When the bits are all 0, the bits in the time domain resource allocation field indicate minimum K0 or minimum K2. If the dynamically indicated frequency domain resource allocation mode is type1, the LSB's

bits or LSB

When the bits are all 1, the bits in the time domain resource allocation field indicate minimum K0 or minimum K2. If the downlink control information also has a frequency-domain frequency hopping identification field, set the bit of the frequency-domain frequency hopping identification field to "disable".

For another example, when the modulation and coding mode field is indicated as a value in the MCS index number corresponding to "reserved" in the MCS table, such as the MCS index numbers 28 to 31 in the MCS table of the example in Table 1, the NDI The indication is 0, and/or when the RV indication is 0, the value of the time domain resource allocation field indicates minimum K0 or minimum K2. Which fields of the first field are set as the set values above can be determined according to actual needs. It can be understood that, one or more of the first domains are the first set values, and the first set values corresponding to each domain may be the same or different.

Table 1

In yet another implementation, S402 includes: when one or more fields in the first fields of the downlink control information are a first set value, acquiring a preconfigured or predefined minislot offset value. Different from the previous implementation manner, in this implementation manner, the minislot offset value is a pre-configured or predefined value, and the field in the downlink control information does not need to be displayed to indicate the minislot offset value. Therefore, when one or more fields in the first fields are the first set value, it is determined that the minislot offset value is the above-mentioned preconfigured or predefined minislot offset value.

Optionally, the network device may also determine the minislot offset value according to the first field of the downlink control information.

In this embodiment of the present application, when one or more fields in the first fields of the downlink control information are the first set values, the downlink control information does not actually schedule data, but the UE may still follow the downlink control information The ACK/NACK resources indicated in feed back HARQ-ACK, for example, for the downlink control information, the terminal equipment always feeds back ACK or always feeds back NACK.

According to a communication method provided by an embodiment of the present application, the first field of downlink control information is multiplexed to determine the minislot offset value, the bits of the control information may not be increased, the overhead of the control information may be reduced, and the HARQ may also be combined - ACK feedback improves signaling reliability.

In the prior art, after the network device sends the first downlink control information carrying the minislot offset value, the minislot offset value cannot be applied/validated for a period of time. However, it is possible for the network device to send the second downlink control information to the terminal device before the minislot offset value carried in the first downlink control information is applied/validated. Both the above-mentioned first downlink control information and the second downlink control information are used to indicate the minislot offset value, so there is a problem of how the terminal device determines the actual minislot offset value.

FIG. 11 is a schematic flowchart of another communication method provided by an embodiment of the present application. Exemplarily, the method may include the following steps:

S501. The network device sends the first downlink control information to the terminal device at the first moment.

Correspondingly, the terminal device receives the above-mentioned first downlink control information at the first moment.

The first downlink control information is used to indicate a first minislot offset value. For the manner of determining the offset value of the first minislot according to the first downlink control information, reference may be made to the foregoing embodiments.

Assuming that the terminal device receives an indication of the first minislot offset value in time slot n, the terminal device will apply/validate the first minislot offset value in time slot n+K or after time slot n+K. This first minislot offset value cannot be used before slot n+K. where K can be greater than 0.

The network device dynamically switches/indicates the first minislot offset value, and there will be a time interval between the indication signaling and the new first minislot offset value taking effect, and the time interval is called application time/validation time K. For example, after the terminal device feeds back HARQ-ACK described in the previous embodiment or after the terminal device sends PUSCH, the new first minislot offset value will be applied/validated, that is, K depends on the downlink control information to the HARQ-ACK feedback Or the time interval between PUSCHs; for another example, K is equal to the old first minislot offset value, or expressed as, the above-mentioned new first minislot offset value has not yet taken effect, and K is the currently valid first minimum slot offset value. Minislot offset value. The size of K may also be related to the PDCCH decoding time. The time slot where the indication signaling is located after adding the above time interval is called the application time or the effective time. Before the new first minimum time slot offset value takes effect, the network device and the terminal device still follow the old first time slot. The minislot offset value schedules data.

Therefore, when the terminal device receives the first downlink control information at the first moment, the first downlink control information will not be applied immediately, and the application moment of the first downlink control information is not earlier than the second moment. The second time is later than the first time, and there is a certain time interval between the second time and the first time.

As shown in FIG. 12 , the schematic diagram of the application of downlink control information, the current receiving PDSCH minislot offset value K0 _min =2, and the first DCI is received, the first DCI indicates that K0 _min =1, the first DCI or K0 The application time of _min = 1 is the time when the application time 1 ends as shown in the figure, that is, K0 _min = 2 is still used before the application time 1 ends, and the new minimum slot offset value is used after the application time 1 ends. .

Optionally, the start position of the application time of the new minislot offset value may be the start position of the symbol or time slot where the DCI is located, or the end position of the symbol or time slot where the DCI is located.

S502. The network device sends the second downlink control information to the terminal device at the third moment.

Correspondingly, the terminal device receives the above-mentioned second downlink control information at the third moment.

Before the above-mentioned first downlink control information is applied, the terminal device receives new downlink control information, that is, the second downlink control information, at the third moment. Wherein, the third time is between the first time and the second time, the second downlink control information is used to indicate the offset value of the second minislot, and the application time of the second downlink control information is not earlier than the fourth moment.

Still referring to FIG. 12 above, after the first DCI is received, and before the first DCI or K0 _min =1 is applied, a second DCI is received that indicates K0 _min =0, the second DCI or K0 _min The application time of =0 is the time at which the application time 2 ends as shown in the figure, and the end time of the application time 2 is later than the application time 1 .

S503. The terminal device determines, according to the first downlink control information and/or the second downlink control information, a used minislot offset value and an application moment of the used minislot offset value, wherein the The used minislot offset value is one of the first minislot offset value and the second minislot offset value, and the used application time is not earlier than the second time and one of the fourth moments.

In one embodiment, regardless of whether the first minislot offset value and the second minislot offset value are the same, the terminal device determines that the second minislot offset value indicated by the latest DCI (that is, the second DCI) is The used minislot offset value and the time at which the application time of the second minislot offset value is determined to end is the application time of the used minislot offset value. The timing of the application time of the minislot offset value to be used is updated from the starting position of the first DCI to the starting position of the second DCI, or the application time of the minislot offset value to be used is changed from the starting position of the first DCI to the starting position of the second DCI. The end position is updated to the end position of the second DCI.

As shown in FIG. 12 , it is finally determined that the used minislot offset value is K0 _min =0, and the application time of the used minislot offset value is the time when the above application time 2 ends.

In another embodiment, if the first minislot offset value and the second minislot offset value are different, the terminal device determines the second minislot offset indicated by the latest DCI (ie, the second DCI) The offset value is the used minislot offset value, and the moment at which the application time of the second minislot offset value is determined to end is the application moment of the used minislot offset value.

In yet another case, if the first minislot offset value and the second minislot offset value are the same, the terminal device does not update the application time, but still uses the first minislot offset value indicated by the first DCI is the used minislot offset value, and the moment at which the application time of the first minislot offset value is determined to end is the application moment of the used minislot offset value.

It can be understood that, the processes of this embodiment and the embodiment shown in FIG. 10 may be independent of each other, or may be combined together. The embodiment shown in FIG. 10 mainly describes how to determine the used mini-slot offset value, while FIG. 11 not only describes how to determine the used mini-slot offset value, but also describes how to determine the used mini-slot offset value The moment of application of the value.

According to a communication method provided by an embodiment of the present application, if the second downlink control information is received before the first downlink control information is applied/validated, then according to the first downlink control information and/or the second downlink control information The used minislot offset value and the application moment of the used minislot offset value are determined, so as to resolve the conflict between the minislot offset values indicated by the multiple downlink control information.

If the terminal device supports the configuration of multiple bandwidth parts (BWPs), the time-domain resource allocation sets of different BWPs are different, and the minislot offset value of the first BWP is not necessarily applicable to the second BWP. If the network device can switch the BWP while scheduling data, it is necessary to solve the problem of how to indicate the minislot offset value of the switched BWP.

FIG. 13 is a schematic flowchart of another communication method provided by an embodiment of the present application. Exemplarily, the method may include the following steps:

S601. The network device sends downlink control information on the first bandwidth part, where the downlink control information includes a time slot offset value and BWP identification indication information.

Correspondingly, the terminal device receives the above-mentioned downlink control information on the first BWP.

If the network device configures multiple BWPs to the terminal device, the network device can switch BWPs while scheduling data. The network device sends the first DCI on the first BWP, where the first DCI includes a time slot offset value for scheduling PDSCH or PUSCH and BWP identification indication information. The BWP identification indication information indicates the identification of the BWP for PDSCH or PUSCH data transmission. If the BWP identification indication information includes the identification of the first BWP, it means that the BWP is not switched, data transmission is still performed in the first BWP, and the terminal device still works on the first BWP; if the BWP identification indication information includes the identification of other BWPs, For example, the identifier of the second BWP means switching to the second BWP, that is, the second BWP is activated, and the terminal device will work on the second BWP and perform data transmission on the second BWP.

S602. When the BWP identification indication information indicates the second BWP, the terminal device uses the timeslot offset value as the minimum timeslot offset value of the second BWP.

When the BWP identification indication information indicates the second BWP, that is, the terminal device will switch from the first BWP to the second BWP for data transmission, the terminal device still takes the time slot offset value indicated by the first DCI as the minimum value of the second BWP gap offset value. Correspondingly, the network device takes the time slot offset value indicated in the first DCI as the minimum time slot offset value of the second BWP. In this way, after the second BWP is activated, the network device does not need to send control information on the second BWP to re-indicate the minislot offset value of the second BWP, which saves signaling overhead and improves communication efficiency.

Specifically, the above downlink control information is also used to instruct the terminal device to receive PDSCH or send PUSCH on the second BWP at the first moment, and correspondingly, the network device sends PDSCH or receives PUSCH on the second BWP at the first moment. Wherein, the first moment is the time slot in which the receiving time slot of the downlink control information plus the time slot offset value indicated by the first DCI is located. For example, if the terminal device receives DCI in time slot n, the first moment is n plus the time slot where shift is located, where shift is the time slot offset value of the first DCI scheduling PDSCH or PUSCH.

Optionally, in another embodiment, when the BWP identification indication information indicates the first BWP, if the timeslot offset value is smaller than the minimum timeslot offset value of the first BWP, the network device will be The PDSCH is sent or the PUSCH is received at two moments, and accordingly, the terminal device receives the PDSCH or sends the PUSCH at the second moment. Wherein, the second time is the time slot in which the receiving time slot of the downlink control information plus the minimum time slot offset value of the first BWP is located. and the terminal device uses the timeslot offset value as a new minislot offset value of the first BWP, that is, updates the minislot offset value of the first BWP to the timeslot offset value. The application time or the effective time of the new minislot offset value may refer to the previous embodiment.

That is to say, the BWP has not been switched, the current second moment uses the minimum time slot offset value of the first BWP for data transmission, and the transmission time slot of the PDSCH or PUSCH scheduled by the DCI is the receiving time slot of the DCI plus the first time slot. The minimum slot offset value of a BWP is the slot in which the slot is located.

Optionally, in another embodiment, when the BWP identification indication information indicates the second BWP, if the time slot offset value of the downlink control information scheduling PDSCH or PUSCH is less than the time delay required for BWP handover, the time required for BWP handover The delay can also be expressed as the time slot required for the BWP handover, then the data transmission is performed on the time slot where the receiving time slot of the downlink control information plus the time slot required for the BWP handover is located. Therefore, if the time slot offset value is less than the time delay required for the BWP handover, the network device sends the time slot in the time slot where the receiving time slot of the downlink control information plus the time slot required for the BWP handover is located. The PDSCH or the PUSCH is received. Correspondingly, the terminal device receives the PDSCH or sends the PUSCH on the time slot in which the receiving time slot of the downlink control information plus the time slot required for the BWP handover is located. For example, as shown in the schematic diagram of BWP handover as shown in FIG. 14 , the terminal device receives DCI at the first BWP in time slot n, the BWP identification indication information of the DCI indicates the second BWP, and the time slot offset value indicated by the DCI is X, Where X is less than M, the terminal device receives PDSCH or sends PUSCH in the time slot where n plus M is located, where M is the time slot required for BWP handover.

The schematic diagram of BWP handover shown in Figure 14, taking downlink scheduling as an example, the time slot offset value indicated in the DCI on BWP1 is less than the BWP handover delay M, then the terminal device adds the handover delay to the DCI receiving time slot The timeslot in which the M timeslots are located receives PDSCH on BWP2 and uses the timeslot offset value as the minimum timeslot offset value of the DCI scheduling PDSCH on BWP2.

It can be understood that, the process of the embodiment shown in FIG. 13 can also be run independently of the process of the foregoing embodiment, and can also be run in combination.

According to a communication method provided by the embodiment of the present application, when the BWP is dynamically switched, the minimum minislot offset value of the target BWP can be indicated at the same time, no new bits need to be added, and scheduling opportunities are not affected to reduce transmission delay. When the BWP does not switch, there is no need to add a new bit field, and the minislot offset value can be updated from a larger value to a smaller value without affecting the scheduling opportunity and reducing the transmission delay. If the base station and the UE wish to switch the minislot offset value from a smaller value to a larger value, the previous embodiment can be used.

The methods of the embodiments of the present application are described in detail above, and the apparatuses of the embodiments of the present application are provided below.

Based on the same concept of the communication method in the above-mentioned embodiment, as shown in FIG. 15 , an embodiment of the present application further provides a communication apparatus 100 , and the communication apparatus 100 can be applied to the above-mentioned FIG. 2 , FIG. 6 , FIG. 8 , and FIG. 10 , in the communication method shown in FIG. 11 and FIG. 13 . The communication apparatus 100 may be a terminal device as shown in FIG. 1 , or may be a component (eg, a chip) applied to the terminal device. The communication device 100 includes a transceiver unit 11 and a processing unit 12 .

Exemplarily, in an embodiment, the transceiver unit 11 is configured to receive first information from a network device at a first time, where the first information is carried on a first physical downlink control channel PDCCH, where in the first At a time, the first PDCCH schedules the first physical downlink shared channel PDSCH according to the first time-domain resource allocation set, and the first information is used to determine the second time-domain resource allocation set for scheduling the second PDSCH after the first time ; the first PDCCH carrying the first information also includes scheduling information of the first PDSCH;

The transceiver unit 11 is further configured to receive data sent by the network device through the first PDSCH;

The transceiver unit 11 is further configured to send feedback information of the data to the network device;

The processing unit 12 is configured to schedule the second PDSCH according to the second time domain resource allocation set at a second time after the feedback information of the data is sent, wherein the second time is at the first time after time.

In one implementation, the first PDCCH carrying the first information does not include scheduling information of the first PDSCH;

The transceiver unit 11 is further configured to send the feedback information of the first PDCCH to the network device;

The processing unit 12 is further configured to schedule the second PDSCH according to the second time domain resource allocation set at a third time after the feedback information of the first PDCCH is sent.

More detailed descriptions of the above-mentioned transceiver unit 11 and processing unit 12 can be obtained by referring to the relevant description of the terminal device in the method embodiment shown in FIG. 2 , which will not be repeated here. It should be noted that the above-mentioned transceiver unit may be an integrated device with a transceiver function, or may be composed of an independent receiving unit with a receiving function and a transmitting unit with a transmitting function, which is logically called a "transmitting unit". .

Exemplarily, in another embodiment, the transceiver unit 11 is configured to receive first information from a network device at a first time, where the first information is carried on a first physical downlink control channel PDCCH, and the first information is A PDCCH includes scheduling information of the first physical uplink shared channel PUSCH, the first PUSCH is scheduled according to the first time domain resource allocation set at the first time, and the first information is used to determine the scheduling after the first time a second time-domain resource allocation set for the second PUSCH;

The transceiver unit 11 is further configured to send data to the network device through the first PUSCH according to the scheduling information of the first PUSCH;

The processing unit 12 is configured to schedule the second PUSCH according to the second time domain resource allocation set within a second time after the data is sent, where the second time is after the first time.

More detailed descriptions of the above-mentioned transceiver unit 11 and processing unit 12 can be obtained by referring to the relevant description of the terminal device in the method embodiment shown in FIG. 6 , which will not be repeated here.

Exemplarily, in yet another embodiment, the transceiver unit 11 is configured to receive first information from a network device at a first time, where the first information is carried in the first physical downlink control channel PDCCH, and in the The first PDCCH at the first time schedules the first physical downlink shared channel PDSCH or the first physical uplink shared channel PUSCH according to the first time domain resource allocation set;

The processing unit 12 is configured to, when the bits of the frequency domain resource allocation field of the first PDCCH are all zero, determine, according to the bits of the time domain resource allocation field of the first PDCCH, for scheduling the second time after the first time a second time-domain resource allocation set for the PDSCH or the second PUSCH;

The processing unit 12 is further configured to schedule the second PDSCH or the second PUSCH according to the determined first time domain resource allocation set at a second time, where the second time is after the first time .

In one implementation, the processing unit 12 is configured to, when the bits of the frequency domain resource allocation field of the first PDCCH are all zero, determine the first The minislot offset value or the index of the minislot offset value of the time domain resource allocation set.

More detailed descriptions of the above-mentioned transceiver unit 11 and processing unit 12 can be obtained by referring to the relevant description of the terminal device in the method embodiment shown in FIG. 8 , which will not be repeated here.

Exemplarily, in another embodiment, the transceiver unit 11 is configured to receive first downlink control information from a network device, where the first downlink control information is carried on a first physical downlink control channel PDCCH; processing Unit 12, configured to determine a first minislot offset value according to a first field of the first downlink control information, wherein the first field includes at least one of the following fields: a frequency domain resource allocation domain, a time domain resource allocation field, modulation and coding mode field, new data indication field or redundancy version field; wherein, the first minimum time slot offset value represents the smallest available time slot for receiving the physical downlink shared channel PDSCH or sending the physical uplink shared channel PUSCH offset value.

In one implementation, the first downlink control information further includes first indication information, where the first indication information is used to indicate that the first field carries indication information of a first minislot offset value.

In yet another implementation, the processing unit 12 is configured to acquire the time domain resource allocation domain when one or more domains in the first domain of the first downlink control information are a first set value The value of the time domain resource allocation field is used to indicate the first minislot offset value.

In yet another implementation, the processing unit 12 is configured to obtain a preconfigured or predefined first field when one or more fields in the first field of the first downlink control information are a first set value. A minislot offset value.

More detailed descriptions of the above-mentioned transceiver unit 11 and processing unit 12 can be obtained by referring to the relevant description of the terminal device in the method embodiment shown in FIG. 10 , which will not be repeated here.

Exemplarily, in another embodiment, the transceiver unit 11 is configured to receive the first downlink control information at a first moment, where the first downlink control information is used to indicate the offset of the first minislot. The application time of the first downlink control information is not earlier than the second time; the transceiver unit 11 is further configured to receive the second downlink control information at the third time, where the third time is at the Between the first time and the second time, the second downlink control information is used to indicate a second minislot offset value, and the application time of the second downlink control information is not earlier than the fourth time; and The processing unit 12 is configured to determine, according to the first downlink control information and/or the second downlink control information, a used minislot offset value and an application moment of the used minislot offset value, wherein , the used minislot offset value is one of the first minislot offset value and the second minislot offset value, and the used application time is not earlier than the second minislot offset value moment and one of the fourth moment.

More detailed descriptions of the above-mentioned transceiver unit 11 and processing unit 12 can be obtained by referring to the relevant description of the terminal device in the method embodiment shown in FIG. 11 , which will not be repeated here.

Exemplarily, in yet another embodiment, the transceiver unit 11 is configured to receive downlink control information on the first bandwidth part BWP, wherein the downlink control information includes a time slot offset value and BWP identification indication information; and processing The unit 12 is configured to use the time slot offset value as the minimum time slot offset value of the second BWP when the BWP identification indication information indicates the second BWP.

In one implementation, the downlink control information is further used to indicate that a physical downlink shared channel PDSCH is received or a physical uplink shared channel PUSCH is sent on the second BWP at a first moment, where the first moment is the downlink control information The receive slot plus the slot offset value of the slot in which the slot is located.

In yet another implementation, the transceiver unit 11 is configured to, when the BWP identification indication information indicates the first BWP, if the timeslot offset value is smaller than the minimum timeslot offset value of the first BWP, at receiving the PDSCH or sending the PUSCH at a second time, where the second time is the time slot where the receiving time slot of the downlink control information plus the minimum time slot offset value of the first BWP is located; and the processing unit 12, configured to use the timeslot offset value as a new minimum timeslot offset value of the first BWP.

In yet another implementation, the transceiver unit 11 is configured to add the time required for the BWP handover to the receiving time slot of the downlink control information if the time slot offset value is less than the time delay required for the BWP handover The PDSCH is received or the PUSCH is sent on the time slot where the delay is located.

More detailed descriptions of the above-mentioned transceiver unit 11 and processing unit 12 can be obtained by referring to the relevant description of the terminal device in the method embodiment shown in FIG. 13 , which will not be repeated here.

Based on the same concept of the communication method in the foregoing embodiment, as shown in FIG. 16 , an embodiment of the present application further provides a communication apparatus 200 , and the communication apparatus 200 can be applied to the communication apparatus shown in FIG. 2 , FIG. 6 , and FIG. 8 . in the communication method. The communication apparatus 100 may be a network device as shown in FIG. 1 , or may be a component (eg, a chip) applied to the network device. The communication device 200 includes a transceiver unit 21 and a processing unit 22 .

Exemplarily, in an embodiment, the transceiver unit 21 is configured to send the first information to the terminal device at the first time, where the first information is carried in the first physical downlink control channel PDCCH, wherein, in the first Time the first PDCCH schedules the first physical downlink shared channel PDSCH according to the first time domain resource allocation set, and the first information is used to determine the second time domain resource allocation set for scheduling the second PDSCH after the first time; The first PDCCH carrying the first information further includes scheduling information of the first PDSCH;

The transceiver unit 21 is further configured to send data to the terminal device through the first PDSCH;

The transceiver unit 21 is further configured to receive feedback information of the data from the terminal device;

The processing unit 22 is configured to schedule the second PDSCH according to the second time domain resource allocation set at a second time after receiving the feedback information of the data, wherein the second time is at the first time after time.

In one implementation, the first PDCCH carrying the first information does not include scheduling information of the first PDSCH;

The transceiver unit 21 is further configured to receive feedback information of the first PDCCH from the terminal device;

The processing unit 22 is further configured to schedule the second PDSCH according to the second time domain resource allocation set at a third time after receiving the feedback information of the first PDCCH.

More detailed descriptions of the above-mentioned transceiver unit 21 and processing unit 22 can be obtained by referring to the relevant description of the network device in the method embodiment shown in FIG. 2 , which will not be repeated here. It should be noted that the above-mentioned transceiver unit may be an integrated device with a transceiver function, or may be composed of an independent receiving unit with a receiving function and a transmitting unit with a transmitting function, which is logically called a "transmitting unit". .

Exemplarily, in another embodiment, the transceiver unit 21 is configured to send first information to a terminal device at a first time, where the first information is carried on a first physical downlink control channel PDCCH, and the first The PDCCH includes scheduling information of the first physical uplink shared channel PUSCH, the first PUSCH is scheduled according to the first time domain resource allocation set at the first time, and the first information is used to determine the scheduling of the first time after the first time. The second time domain resource allocation set of two PUSCHs;

The transceiver unit 21 is further configured to receive data sent by the terminal device through the first PUSCH;

The processing unit 22 is configured to schedule the second PUSCH according to the second time domain resource allocation set at a second time after the data is received, where the second time is after the first time.

More detailed descriptions of the above-mentioned transceiver unit 21 and processing unit 22 can be obtained by referring to the relevant description of the network device in the method embodiment shown in FIG. 6 , which will not be repeated here.

Exemplarily, in another embodiment, the transceiver unit 21 is configured to send the first information to the terminal device at the first time, where the first information is carried on the first physical downlink control channel PDCCH, and the first information is At a time, the first PDCCH schedules the first physical downlink shared channel PDSCH or the first physical uplink shared channel PUSCH according to the first time domain resource allocation set, and the bits of the frequency domain resource allocation field of the first PDCCH are all zero, so The bits of the time domain resource allocation field of the first PDCCH are used to determine the second time domain resource allocation set for scheduling the second PDSCH or the second PUSCH after the first time;

A processing unit 22, configured to schedule the second PDSCH or the second PUSCH according to the determined first time domain resource allocation set at a second time, where the second time is after the first time.

More detailed descriptions of the foregoing transceiver unit 21 and processing unit 22 can be obtained by referring to the relevant descriptions of the network devices in the method embodiment shown in FIG. 8 , and details are not repeated here.

Exemplarily, in another embodiment, the transceiver unit 21 is configured to send first downlink control information, where the first downlink control information is carried on a first physical downlink control channel PDCCH, and the first downlink control information is The first field of the row control information is used to determine the first minislot offset value, wherein the first field includes at least one of the following fields: a frequency domain resource allocation domain, a time domain resource allocation domain, a modulation and coding mode domain, a new In the data indication field or the redundancy version field, the first minimum time slot offset value is used to indicate the minimum available time slot offset value for sending the physical downlink shared channel PDSCH or receiving the physical uplink shared channel PUSCH.

In one implementation, the first downlink control information further includes first indication information, where the first indication information is used to indicate that the first field carries indication information of a first minislot offset value.

More detailed descriptions of the above-mentioned transceiver unit 21 and processing unit 22 can be obtained by referring to the relevant descriptions of the network devices in the method embodiment shown in FIG. 10 , which will not be repeated here.

Exemplarily, in another embodiment, the transceiver unit 21 is configured to send the first downlink control information at a first moment, wherein the application moment of the first information is not earlier than the second moment; the The transceiver unit 21 is further configured to send and receive second downlink control information at a third moment, where the third moment is between the first moment and the second moment, and the second downlink control information is used to indicate the first Two minislot offset values, the application moment of the second downlink control information is not earlier than the fourth moment; and a processing unit 22, configured to use the first downlink control information and/or the second downlink control information according to The information determines a used minislot offset value and an application moment of the used minislot offset value, wherein the used minislot offset value is the first minislot offset value and the all one of the second minislot offset values, and the used application time is not earlier than one of the second time and the fourth time.

More detailed descriptions of the above-mentioned transceiver unit 21 and processing unit 22 can be obtained by referring to the relevant descriptions of the network devices in the method embodiment shown in FIG. 11 , which will not be repeated here.

Exemplarily, in another embodiment, the transceiver unit 21 is configured to send downlink control information on the first bandwidth part BWP, wherein the downlink control information includes a time slot offset value and BWP identification indication information; and processing Unit 22, configured to use the time slot offset value as the minimum time slot offset value of the second BWP when the BWP identification indication information indicates the second BWP.

In one implementation, the downlink control information is further used to instruct to send a physical downlink shared channel PDSCH or receive a physical uplink shared channel PUSCH on the second BWP at a first moment, where the first moment is the downlink control information The receive slot plus the slot offset value of the slot in which the slot is located.

In yet another implementation, the transceiver unit 21 is configured to, when the BWP identification indication information indicates the first BWP, if the timeslot offset value is smaller than the minimum timeslot offset value of the first BWP, in Send the PDSCH or receive the PUSCH at a second time, where the second time is the time slot where the receiving time slot of the downlink control information plus the minimum time slot offset value of the first BWP is located; and the processing unit 22, configured to use the timeslot offset value as a new minimum timeslot offset value of the first BWP.

In yet another implementation, the transceiver unit 21 is configured to add the time required for the BWP handover to the receiving time slot of the downlink control information if the time slot offset value is less than the time delay required for the BWP handover The PDSCH is sent or the PUSCH is received on the time slot where the delay is located.

More detailed descriptions of the foregoing transceiver unit 21 and processing unit 22 can be obtained by referring to the relevant descriptions of the network devices in the method embodiment shown in FIG. 13 , and details are not repeated here.

An embodiment of the present application further provides a communication device, where the communication device is configured to execute the above communication method. Part or all of the above communication methods can be implemented by hardware or software.

Optionally, the communication device may be a chip or an integrated circuit during specific implementation.

Optionally, when part or all of the communication methods in the foregoing embodiments are implemented by software, the communication apparatus includes: a processor configured to execute a program, and when the program is executed, the communication apparatus can implement the methods provided in the foregoing embodiments. In the communication method, the communication device may further include a memory for storing necessary programs, and these involved programs can be loaded into the memory when the communication device leaves the factory, or can be loaded into the memory when needed later.

Optionally, the above-mentioned memory may be a physically independent unit, or may be integrated with the processor.

Optionally, when part or all of the communication methods in the foregoing embodiments are implemented by software, the communication apparatus may also only include a processor. The memory for storing the program is located outside the communication device, and the processor is connected to the memory through a circuit/wire for reading and executing the program stored in the memory.

The processor may be a central processing unit (CPU), a network processor (NP), or a combination of CPU and NP.

Optionally, the processor may include a hardware chip. The above hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD) or a combination thereof. The above-mentioned PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL) or any combination thereof.

The memory may include volatile memory (volatile memory), such as random-access memory (random-access memory, RAM); the memory may also include non-volatile memory (non-volatile memory), such as flash memory (flash memory), A hard disk drive (HDD) or a solid-state drive (SSD); the memory may also include a combination of the above types of memory.

FIG. 17 shows a schematic structural diagram of a simplified terminal device. For the convenience of understanding and illustration, in FIG. 17 , the terminal device takes a mobile phone as an example. As shown in FIG. 17 , the terminal device includes a processor, and may also include a radio frequency circuit, an antenna, and an input and output device. The processor may be used to process communication protocols and communication data, and may also be used to control terminal equipment, execute software programs, and process data of software programs. The terminal device may also include a memory, which is mainly used for storing software programs and data. These related programs can be loaded into the memory when the communication device leaves the factory, or can be loaded into the memory when needed later. The radio frequency circuit is mainly used for the conversion of the baseband signal and the radio frequency signal and the processing of the radio frequency signal. Antennas are mainly used to send and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal equipment may not have input and output devices.

When data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal through the antenna in the form of electromagnetic waves. When data is sent to the terminal device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, which converts the baseband signal into data and processes the data. For ease of illustration, only one memory and processor are shown in FIG. 17 . In an actual end device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or a storage device or the like. The memory may be set independently of the processor, or may be integrated with the processor, which is not limited in this embodiment of the present application.

In the embodiments of the present application, the antenna and radio frequency circuit with a transceiver function can be regarded as the receiving unit and the sending unit of the terminal device (also collectively referred to as a transceiver unit), and the processor with a processing function can be regarded as the processing unit of the terminal device . As shown in FIG. 17 , the terminal device includes a receiving unit 31 , a processing unit 32 and a sending unit 33 . The receiving unit 31 may also be referred to as a receiver, a receiver, a receiving circuit, and the like, and the transmitting unit 33 may also be referred to as a transmitter, a transmitter, a transmitter, a transmitting circuit, and the like. The processing unit may also be referred to as a processor, a processing board, a processing module, a processing device, and the like.

For example, in one embodiment, the receiving unit 31 is configured to execute the functions of the terminal device in steps S101 and S102 of the embodiment shown in FIG. 2 ; the sending unit 33 is configured to execute the functions of the terminal device in step S103 of the embodiment shown in FIG. 2 . function; and the processing unit 32 is configured to execute step S104 of the embodiment shown in FIG. 2 .

For example, in another embodiment, the receiving unit 31 is configured to execute the function of the terminal device in step S201 of the embodiment shown in FIG. 6 ; the sending unit 33 is configured to execute the function of the terminal device in step S202 of the embodiment shown in FIG. 6 . ; and the processing unit 32 is configured to execute step S203 of the embodiment shown in FIG. 6 .

For example, in another embodiment, the receiving unit 31 is configured to execute the function of the terminal device in step S301 of the embodiment shown in FIG. 8 ; and the processing unit 32 is configured to execute steps S302 and S303 of the embodiment shown in FIG. 8 .

For example, in another embodiment, the receiving unit 31 is configured to execute the function of the terminal device in step S401 of the embodiment shown in FIG. 10 ; and the processing unit 32 is configured to execute step S402 of the embodiment shown in FIG. 10 .

For example, in yet another embodiment, the receiving unit 31 is configured to execute the functions of the terminal device in steps S501 and S502 of the embodiment shown in FIG. 11 ; and the processing unit 32 is configured to execute step S503 of the embodiment shown in FIG. 11 .

For example, in yet another embodiment, the receiving unit 31 is configured to execute step S601 of the embodiment shown in FIG. 12 ; and the processing unit 32 is configured to execute step S602 of the embodiment shown in FIG. 12 .

FIG. 18 shows a schematic structural diagram of a simplified network side device. The network side equipment includes a radio frequency signal transceiver and conversion part and a 42 part, and the radio frequency signal transceiver and conversion part further includes a receiving unit 41 part and a sending unit 43 part (which may also be collectively referred to as a transceiver unit). The radio frequency signal transceiver and conversion part is mainly used for the transmission and reception of radio frequency signals and the conversion of radio frequency signals and baseband signals; the 42 part is mainly used for baseband processing and control of network side equipment. The receiving unit 41 may also be referred to as a receiver, a receiver, a receiving circuit, and the like, and the transmitting unit 43 may also be referred to as a transmitter, a transmitter, a transmitter, a transmitting circuit, and the like. Part 42 is usually the control center of the network-side device, which can usually be called a processing unit, and is used to control the network-side device to perform the steps performed by the network-side device in the above-mentioned FIGS. 4 , 6 and 8 . For details, please refer to the descriptions in the relevant sections above.

The 42 part may include one or more single boards, and each single board may include one or more processors and one or more memories, and the processor is used to read and execute programs in the memory to realize baseband processing device control. If there are multiple boards, each board can be interconnected to increase processing capacity. As an optional implementation manner, one or more processors may be shared by multiple boards, or one or more memories may be shared by multiple boards, or one or more processors may be shared by multiple boards at the same time. device.

For example, in one embodiment, the sending unit 43 is configured to execute the functions of the network device in steps S101 and S102 of the embodiment shown in FIG. 2 ; and the receiving unit 41 is configured to execute the network device in step S103 of the embodiment shown in FIG. 2 . function.

For example, in yet another embodiment, the sending unit 43 is configured to execute the function of the network device in step S201 of the embodiment shown in FIG. 6 ; and the receiving unit 41 is configured to execute the function of the network device in step S202 of the embodiment shown in FIG. 6 . Function.

For example, in another embodiment, the sending unit 43 is configured to perform the function of the network device in step S301 of the embodiment shown in FIG. 8 .

For example, in another embodiment, the sending unit 43 is configured to perform the function of the network device in step S401 of the embodiment shown in FIG. 10 .

For example, in yet another embodiment, the sending unit 43 is configured to perform the functions of the network device in steps S501 and S502 of the embodiment shown in FIG. 11 .

For example, in another embodiment, the sending unit 43 is configured to perform the function of the network device in step S601 of the embodiment shown in FIG. 12 .

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the division of the unit is only a logical function division, and there may be other division methods in actual implementation, for example, multiple units or components may be combined or integrated into another system, or some features may be ignored, or not implement. The shown or discussed mutual coupling, or direct coupling, or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

Units described as separate components may or may not be physically separated, and components shown as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the procedures or functions according to the embodiments of the present application are generated in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions may be stored in or transmitted over a computer-readable storage medium. The computer instructions can be sent from one website site, computer, server, or data center to another by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.) A website site, computer, server or data center for transmission. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes one or more available media integrated. The available media may be read-only memory (ROM), or random access memory (RAM), or magnetic media, such as floppy disks, hard disks, magnetic tape, magnetic disks, or optical media, such as digital A general-purpose optical disc (digital versatile disc, DVD), or a semiconductor medium, for example, a solid state disk (solid state disk, SSD) or the like.

Claims (40)

1. A communication method, characterized in that the method comprises: Receive first information from a network device at a first time, where the first information is carried on a first physical downlink control channel PDCCH, where at the first time the first PDCCH is scheduled according to a first time-domain resource allocation set The first physical downlink shared channel PDSCH, the first information is used to determine the second time domain resource allocation set for scheduling the second PDSCH after the first time; the first PDCCH carrying the first information also includes the Describe the scheduling information of the first PDSCH; receiving data sent by the network device through the first PDSCH; sending feedback information of the data to the network device; At a second time after the feedback information of the data is sent, the second PDSCH is scheduled according to the second time domain resource allocation set, where the second time is after the first time. 2. The method according to claim 1, wherein the first PDCCH carrying the first information does not include scheduling information of the first PDSCH, the method further comprising: sending the feedback information of the first PDCCH to the network device; At a third time after the feedback information of the first PDCCH is sent, the second PDSCH is scheduled according to the second time-domain resource allocation set. 3. A communication method, characterized in that the method comprises: Send first information to the terminal device at the first time, the first information is carried on the first physical downlink control channel PDCCH, wherein at the first time, the first PDCCH schedules the first time domain resource allocation set according to the first time domain resource allocation set. A physical downlink shared channel PDSCH, the first information is used to determine the second time domain resource allocation set for scheduling the second PDSCH after the first time; the first PDCCH carrying the first information also includes the scheduling information of the first PDSCH; sending data to the terminal device through the first PDSCH; receiving feedback information of the data from the terminal device; The second PDSCH is scheduled according to the second time domain resource allocation set at a second time after the feedback information of the data is received, where the second time is after the first time. 4. The method according to claim 3, wherein the first PDCCH carrying the first information does not include scheduling information of the first PDSCH, the method further comprising: receiving feedback information of the first PDCCH from the terminal device; At a third time after the feedback information of the first PDCCH is received, the second PDSCH is scheduled according to the second time-domain resource allocation set. 5. A communication method, wherein the method comprises: Receive first information from a network device at a first time, where the first information is carried on a first physical downlink control channel PDCCH, the first PDCCH includes scheduling information of a first physical uplink shared channel PUSCH, The first time schedules the first PUSCH according to the first time domain resource allocation set, and the first information is used to determine the second time domain resource allocation set for scheduling the second PUSCH after the first time; sending data to the network device through the first PUSCH according to the scheduling information of the first PUSCH; The second PUSCH is scheduled according to the second set of time domain resource allocations within a second time after the data is sent, wherein the second time is after the first time. 6. A communication method, characterized in that the method comprises: Send first information to the terminal device at the first time, where the first information is carried on the first physical downlink control channel PDCCH, and the first PDCCH includes the scheduling information of the first physical uplink shared channel PUSCH. The first PUSCH is scheduled according to the first time-domain resource allocation set at a time, and the first information is used to determine the second time-domain resource allocation set for scheduling the second PUSCH after the first time; receiving data sent by the terminal device through the first PUSCH; The second PUSCH is scheduled according to the second set of time domain resource allocations at a second time after the data is received, wherein the second time is after the first time. 7. The method according to any one of claims 1 to 6, wherein the first time domain resource allocation set comprises one or more time slot offset values, and the time slot offset values are greater than or equal to 0, the second time domain resource allocation set includes one or more time slot offset values, and the time slot offset value is greater than 0; or The first time domain resource allocation set includes one or more time slot offset values, the time slot offset value is greater than 0, and the second time domain resource allocation set includes one or more time slot offset values, The slot offset value is greater than or equal to zero. 8. A communication method, characterized in that the method comprises: Receive first information from a network device at a first time, where the first information is carried on a first physical downlink control channel PDCCH, and at the first time the first PDCCH is scheduled according to a first time-domain resource allocation set the first physical downlink shared channel PDSCH or the first physical uplink shared channel PUSCH; When the bits of the frequency-domain resource allocation field of the first PDCCH are all zero, the time-domain resource allocation field of the first PDCCH determines the number of bits used for scheduling the second PDSCH or the second PUSCH after the first time. the second time domain resource allocation set; The second PDSCH or the second PUSCH is scheduled according to the determined first time domain resource allocation set at a second time, wherein the second time is after the first time. 9 . The method according to claim 8 , wherein when the bits of the frequency domain resource allocation field of the first PDCCH are all zero, the method is determined according to the bits of the time domain resource allocation field of the first PDCCH. 10 . The second time domain resource allocation set used for scheduling the second PDSCH or the second PUSCH after the first time, including: When the bits of the frequency domain resource allocation field of the first PDCCH are all zero, determine the minimum slot offset value of the first time domain resource allocation set according to the bits of the time domain resource allocation field of the first PDCCH or Index of the minislot offset value. 10. A communication method, characterized in that the method comprises: Send first information to the terminal device at the first time, where the first information is carried on the first physical downlink control channel PDCCH, and at the first time the first PDCCH schedules the first time domain resource allocation set according to the first time domain resource allocation set. A physical downlink shared channel PDSCH or a first physical uplink shared channel PUSCH, the bits of the frequency domain resource allocation field of the first PDCCH are all zero, and the bits of the time domain resource allocation field of the first PDCCH are used to determine the scheduling the second time domain resource allocation set of the second PDSCH or the second PUSCH after the first time; The second PDSCH or the second PUSCH is scheduled according to the determined first time domain resource allocation set at a second time, wherein the second time is after the first time. 11. A communication device, characterized in that the device comprises: a transceiver unit, configured to receive first information from a network device at a first time, where the first information is carried on a first physical downlink control channel PDCCH, wherein at the first time the first PDCCH is based on the first time The domain resource allocation set schedules the first physical downlink shared channel PDSCH, and the first information is used to determine the second time domain resource allocation set for scheduling the second PDSCH after the first time; A PDCCH further includes scheduling information of the first PDSCH; The transceiver unit is further configured to receive data sent by the network device through the first PDSCH; The transceiver unit is further configured to send feedback information of the data to the network device; a processing unit, configured to schedule the second PDSCH according to the second time domain resource allocation set at a second time after the feedback information of the data is sent, wherein the second time is at the first time after. 12. The apparatus according to claim 11, wherein the first PDCCH carrying the first information does not include scheduling information of the first PDSCH; The transceiver unit is further configured to send the feedback information of the first PDCCH to the network device; The processing unit is further configured to schedule the second PDSCH according to the second time domain resource allocation set at a third time after the feedback information of the first PDCCH is sent. 13. A communication device, characterized in that the device comprises: a transceiver unit, configured to send first information to the terminal device at a first time, where the first information is carried in a first physical downlink control channel PDCCH, wherein at the first time the first PDCCH is based on a first time domain The resource allocation set schedules the first physical downlink shared channel PDSCH, and the first information is used to determine the second time domain resource allocation set for scheduling the second PDSCH after the first time; The PDCCH also includes scheduling information of the first PDSCH; The transceiver unit is further configured to send data to the terminal device through the first PDSCH; The transceiver unit is further configured to receive feedback information of the data from the terminal device; a processing unit, configured to schedule the second PDSCH according to the second time domain resource allocation set at a second time after the feedback information of the data is received, wherein the second time is at the first time after. The apparatus according to claim 13, wherein the first PDCCH carrying the first information does not include scheduling information of the first PDSCH; The transceiver unit is further configured to receive feedback information of the first PDCCH from the terminal device; The processing unit is further configured to schedule the second PDSCH according to the second time domain resource allocation set at a third time after receiving the feedback information of the first PDCCH. 15. A communication device, characterized in that the device comprises: a transceiver unit, configured to receive first information from a network device at a first time, where the first information is carried in a first physical downlink control channel PDCCH, and the first PDCCH includes the scheduling of the first physical uplink shared channel PUSCH information, the first PUSCH is scheduled according to the first time-domain resource allocation set at the first time, and the first information is used to determine the second time-domain resource allocation set for scheduling the second PUSCH after the first time; The transceiver unit is further configured to send data to the network device through the first PUSCH according to the scheduling information of the first PUSCH; The processing unit is configured to schedule the second PUSCH according to the second time domain resource allocation set within a second time after sending the data, where the second time is after the first time. 16. A communication device, characterized in that the device comprises: A transceiver unit, configured to send first information to a terminal device at a first time, where the first information is carried on a first physical downlink control channel PDCCH, and the first PDCCH includes scheduling information of the first physical uplink shared channel PUSCH , scheduling the first PUSCH according to the first time-domain resource allocation set at the first time, and the first information is used to determine the second time-domain resource allocation set for scheduling the second PUSCH after the first time; The transceiver unit is further configured to receive data sent by the terminal device through the first PUSCH; The processing unit is configured to schedule the second PUSCH according to the second time domain resource allocation set at a second time after the data is received, where the second time is after the first time. 17. The apparatus according to any one of claims 11 to 16, wherein the first time domain resource allocation set comprises one or more time slot offset values, and the time slot offset values are greater than or equal to 0, the second time domain resource allocation set includes one or more time slot offset values, and the time slot offset value is greater than 0; or The first time domain resource allocation set includes one or more time slot offset values, the time slot offset value is greater than 0, and the second time domain resource allocation set includes one or more time slot offset values, The slot offset value is greater than or equal to zero. 18. A communication device, characterized in that the device comprises: a transceiver unit, configured to receive first information from a network device at a first time, where the first information is carried on a first physical downlink control channel PDCCH, and at the first time the first PDCCH is based on the first time The domain resource allocation set schedules the first physical downlink shared channel PDSCH or the first physical uplink shared channel PUSCH; a processing unit, configured to determine, according to the bits of the time domain resource allocation domain of the first PDCCH, for scheduling the second PDSCH after the first time when the bits of the frequency domain resource allocation domain of the first PDCCH are all zeros or a second time domain resource allocation set of the second PUSCH; The processing unit is further configured to schedule the second PDSCH or the second PUSCH according to the determined first time domain resource allocation set at a second time, where the second time is after the first time. 19 . The apparatus according to claim 18 , wherein the processing unit is configured to, when the bits of the frequency domain resource allocation field of the first PDCCH are all zero, according to the time domain resources of the first PDCCH The bits of the allocation field determine the minislot offset value or the index of the minislot offset value of the first time domain resource allocation set. 20. A communication device, characterized in that the device comprises: a transceiver unit, configured to send first information to a terminal device at a first time, where the first information is carried in a first physical downlink control channel PDCCH, and at the first time the first PDCCH is based on a first time domain The resource allocation set schedules the first physical downlink shared channel PDSCH or the first physical uplink shared channel PUSCH, the bits of the frequency domain resource allocation field of the first PDCCH are all zero, and the bits of the time domain resource allocation field of the first PDCCH for determining a second time domain resource allocation set for scheduling the second PDSCH or the second PUSCH after the first time; and a processing unit, configured to schedule the second PDSCH or the second PUSCH according to the determined first time domain resource allocation set at a second time, where the second time is after the first time. 21. A communication method, characterized in that the method comprises: receiving first downlink control information from a network device, where the first downlink control information is carried on a first physical downlink control channel PDCCH; The first minislot offset value is determined according to the first field of the first downlink control information, wherein the first field includes at least one of the following fields: a frequency domain resource allocation domain, a time domain resource allocation domain, a modulation and coding domain Mode field, New Data Indication field or Redundancy Version field; The first minimum time slot offset value represents the smallest available time slot offset value for receiving the physical downlink shared channel PDSCH or sending the physical uplink shared channel PUSCH. 22. The method according to claim 21, wherein the first downlink control information further comprises first indication information, wherein the first indication information is used to indicate that the first domain carries a first minislot Indication of the offset value. 23. The method according to claim 21 or 22, wherein the determining a minislot offset value according to the first field of the first downlink control information comprises: When one or more fields in the first fields of the first downlink control information are the first set values, obtain the value of the time-domain resource allocation field, where the value of the time-domain resource allocation field is used for Indicates the first minislot offset value. 24. The method according to claim 21 or 22, wherein the determining the first minislot offset value according to the first field of the first downlink control information comprises: When one or more fields in the first fields of the first downlink control information are the first set value, a preconfigured or predefined first minislot offset value is acquired. The method according to any one of claims 21 to 24, wherein the receiving the first downlink control information from the network device comprises: receiving the first downlink control information at a first moment, wherein the application moment of the first downlink control information is not earlier than the second moment; The method also includes: Second downlink control information is received at a third time instant, where the third time instant is between the first time instant and the second time instant, and the second downlink control information is used to indicate a second minislot offset value, the application time of the second downlink control information is not earlier than the fourth time; The used minislot offset value and the application moment of the used minislot offset value are determined according to the first downlink control information and/or the second downlink control information, wherein the used minislot offset value is The minislot offset value is one of the first minislot offset value and the second minislot offset value, and the used application time is not earlier than the second time and the fourth one of the moments. 26. A communication method, characterized in that the method comprises: sending first downlink control information, wherein the first downlink control information is carried in a first physical downlink control channel PDCCH, and the first downlink control information The first field of the control information is used to determine the first minislot offset value, wherein the first field includes at least one of the following fields: a frequency-domain resource allocation field, a time-domain resource allocation field, a modulation and coding mode field, a new data field In the indication field or the redundancy version field, the first minimum time slot offset value is used to indicate the minimum available time slot offset value for sending the physical downlink shared channel PDSCH or receiving the physical uplink shared channel PUSCH. 27. The method according to claim 26, wherein the first downlink control information further comprises first indication information, and the first indication information is used to indicate that the first domain carries a first minislot Indication of the offset value. 28. The method according to claim 26 or 27, wherein the sending the first downlink control information comprises: Sending the first downlink control information at the first moment, wherein the application moment of the first information is not earlier than the second moment; The method also includes: The second downlink control information is sent and received at a third moment, wherein the third moment is between the first moment and the second moment, and the second downlink control information is used to indicate the second minislot offset value , the application time of the second downlink control information is not earlier than the fourth time; The used minislot offset value and the application moment of the used minislot offset value are determined according to the first downlink control information and/or the second downlink control information, wherein the used minislot offset value is The minislot offset value is one of the first minislot offset value and the second minislot offset value, and the used application time is not earlier than the second time and the fourth one of the moments. 29. A communication method, characterized in that the method comprises: receiving downlink control information on the first bandwidth part BWP, wherein the downlink control information includes a time slot offset value and BWP identification indication information; When the BWP identification indication information indicates the second BWP, the timeslot offset value is used as the minimum timeslot offset value of the second BWP. 30. The method according to claim 29, wherein the downlink control information is further used to indicate that the physical downlink shared channel (PDSCH) or the physical uplink shared channel (PUSCH) is sent on the second BWP at the first moment. The first moment is the time slot in which the receiving time slot of the downlink control information plus the time slot offset value is located. 31. The method of claim 29, wherein the method further comprises: When the BWP identification indication information indicates the first BWP, if the time slot offset value is smaller than the minimum time slot offset value of the first BWP, the PDSCH is received or the PUSCH is sent at the second moment, and the The second moment is the time slot where the receiving time slot of the downlink control information plus the minimum time slot offset value of the first BWP is located; The slot offset value is used as the new minislot offset value of the first BWP. 32. The method of claim 29, wherein the method further comprises: If the time slot offset value is less than the time delay required for BWP handover, receive the PDSCH or send the PUSCH. 33. A communication method, characterized in that the method comprises: Send downlink control information on the first bandwidth part BWP, wherein the downlink control information includes a time slot offset value and BWP identification indication information; When the BWP identification indication information indicates the second BWP, the timeslot offset value is used as the minimum timeslot offset value of the second BWP. 34. The method according to claim 33, wherein the downlink control information is further used to indicate that the physical downlink shared channel (PDSCH) or the physical uplink shared channel (PUSCH) is received on the second BWP at the first moment. The first moment is the time slot in which the receiving time slot of the downlink control information plus the time slot offset value is located. 35. The method of claim 33, wherein the method further comprises: When the BWP identification indication information indicates the first BWP, if the time slot offset value is smaller than the minimum time slot offset value of the first BWP, the PDSCH is sent or the PUSCH is received at the second moment, so the The second moment is the time slot where the receiving time slot of the downlink control information plus the minimum time slot offset value of the first BWP is located; The slot offset value is used as the new minislot offset value of the first BWP. 36. The method of claim 33, wherein the method further comprises: If the time slot offset value is less than the time delay required for BWP handover, send the PDSCH or receive the PDSCH on the receiving time slot of the downlink control information plus the time slot where the time delay required for the BWP handover PUSCH. 37. A communication device, characterized by comprising a processor, which is coupled to a memory and reads instructions in the memory, and implements any one of claims 21 to 25 according to the instructions Methods. 38. A communication device, characterized by comprising a processor, which is configured to be coupled to a memory and read instructions in the memory, and implement according to the instructions any one of claims 26 to 28 Methods. 39. A communication device, characterized by comprising a processor, which is coupled to a memory and reads instructions in the memory, and implements any one of claims 29 to 32 according to the instructions Methods. 40. A communication device, characterized by comprising a processor, which is coupled to a memory and reads instructions in the memory, and implements any one of claims 33 to 36 according to the instructions Methods.

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