RU2777033C1 - Communication method, terminal device and network device - Google Patents

Abstract

FIELD: communication technology.

SUBSTANCE: invention relates to the field of communication. The method includes: reception by the terminal device of the control information of the downlink (DCI), wherein the DCI contains the first information field, and the DCI is used to schedule at least one physical shared downlink channel (PDSCH); based on whether the first information field is used to trigger the feedback sequence, the determination by the terminal device of the transmission parameters for sending the feedback sequence over the physical channel; and sending by the terminal device through the use of the parameters for transmitting the feedback sequence over the physical channel.

EFFECT: increase in the flexibility of the feedback information transmission, thereby improving the communication characteristics.

14 cl, 7 dwg, 3 tbl

Description

FIELD OF TECHNOLOGY TO WHICH THE INVENTION RELATES

Embodiments of the present invention relate to the field of communication technology and, in particular, to a communication method, a terminal device, and a network device.

BACKGROUND OF THE INVENTION

In a communication system, a network device may schedule a physical downlink shared channel (PDSCH) for a terminal device via downlink control information (DCI). The terminal device may detect the PDSCH and send feedback information based on the discovery result.

With the development of the communication system, communication flexibility becomes more and more resource intensive. An urgent task that needs to be solved is to increase the flexibility of transmitting feedback information.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a communication method, a terminal device, and a network device that can improve the flexibility of transmitting feedback information, and thus improve communication efficiency.

In a first aspect, a communication method is provided, which may include the following steps. The terminal device receives the DCI, where the DCI contains a first information field and is used to schedule at least one PDSCH. Based on whether the first information field is used to start the feedback sequence, the terminal apparatus determines a transmission parameter for sending the feedback sequence over the physical channel. The terminal device sends a feedback sequence over the physical channel using a transmission parameter.

In a second aspect, a communication method is provided, which may include the following steps. The network device sends the DCI, where the DCI contains the first information field and is used to schedule at least one PDSCH. Based on whether the first information field is used to trigger the feedback sequence, the network device determines a transmission parameter for receiving the feedback sequence over the physical channel. The network device receives the feedback sequence over the physical channel using the transfer parameter.

In a third aspect, a terminal device is provided that can be configured to carry out the method in the first aspect.

In particular, the terminal device comprises functional modules configured to carry out the method in the first aspect.

In a fourth aspect, a network device is provided that can be configured to carry out the method in the second aspect.

In particular, the network device may comprise functional modules configured to implement the method in the second aspect.

In a fifth aspect, a communications device is provided that may include a processor, a memory, and a transceiver. The storage device may be configured to store a computer program, and the processor may be configured to call and run the computer program stored in the storage device to perform the method in the first aspect or the second aspect based on the transceiver.

In a sixth aspect, a chip is provided that can be configured to implement the method in the first or second aspect.

In particular, the chip may include a processor configured to call and execute a computer program in a storage device to cause the device installed with the chip to perform the method in the first or second aspect based on the transceiver.

In a seventh aspect, a computer-readable storage medium is provided, configured to store a computer program, the computer program causing the computer to execute the method in the first or second aspect.

In an eighth aspect, a computer program product is provided, comprising a computer program instruction, wherein the computer program instruction enables the computer to execute the method in the first or second aspect.

In a ninth aspect, a computer program is provided that runs on a computer to enable the computer to execute the method in the first or second aspect.

In embodiments of the present invention, the DCI may comprise a first information field that may or may not be used to trigger the feedback sequence, and the terminal device may send the feedback sequence based on whether the first information field is used to trigger the feedback sequence, such that it can flexibly select an appropriate transmission parameter based on whether the feedback sequence is triggered by the first information field, and then the communication performance is improved.

BRIEF DESCRIPTION OF GRAPHICS

In FIG. 1 is a schematic representation of the architecture of a communication system according to an embodiment of the present invention.

In FIG. 2 is a schematic representation of a communication method according to an embodiment of the present invention.

In FIG. 3 is a schematic representation of the start position in the time domain of the HARQ feedback timing according to an embodiment of the present invention.

In FIG. 4 is a schematic block diagram of a terminal device according to an embodiment of the present invention.

In FIG. 5 is a schematic block diagram of a terminal device according to an embodiment of the present invention.

In FIG. 6 is a schematic block diagram of a communication device according to an embodiment of the present invention.

In FIG. 7 is a schematic structural diagram of a communication device according to an embodiment of the present invention.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are not all embodiments, but part of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments in the present invention without any creative effort are within the scope of the present invention.

The technical solutions of the embodiments of the present invention can be applied to various communication systems, such as Global System for Mobile Communications (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), General Service Packet Radio Service (GPRS), Long Term Evolution (LTE), LTE Frequency Division Duplex (FDD), LTE Time Division Duplex (TDD), Universal Mobile Telecommunications System (UMTS), Worldwide broadband wireless access compatibility (WiMAX) or 5G system.

As an example, a communications system 100 to which embodiments of the present invention apply is shown in FIG. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or called a communication terminal and a terminal). Network device 110 may provide communication coverage for a specific geographic area and may communicate with a terminal device located in the coverage area. Optionally, network device 110 may be a base transceiver station (BTS) in a GSM or CDMA system, may also be a NodeB (NB) in a WCDMA system, and may also be an Evolutionary Node B (eNB or eNodeB) in an LTE system, or a wireless controller in a cloud-based radio access network (CRAN). Or, the network device may be a mobile switching center, relay station, access point, transport device, wearable device, hub, switch, network bridge, router, network device in a 5G network, or network device in the future Evolved Public Land Mobile Network ( PLMN) or the like.

The communication system 100 further comprises at least one terminal device 120 located within the coverage area of the network device 110. The term "terminal" as used herein includes, but is not limited to: a wired connection, such as a public switched telephone network (PSTN). ), digital subscriber line (DSL), digital cable, or direct cable; and/or other data connection/network; and/or connecting via a wireless interface, such as a cellular network, a wireless local area network (WLAN), a digital television network such as a handheld digital video broadcasting (DVB-H) network, a satellite network, or an AM-FM broadcast transmitter; and/or a device of another terminal that is configured to receive/send communication signals; and/or an Internet of Things (IoT) device. A terminal configured to communicate via a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal", and/or "mobile terminal". An example of a mobile terminal includes, but is not limited to, a satellite or cell phone; a personal communications system (PCS) terminal that integrates a cellular radiotelephone with data processing, facsimile, and data communications capabilities; and may be a personal digital assistant (PDA) containing a radiotelephone, pager, Internet/Intranet access, web browser, address book, calendar, and/or a global positioning system (GPS) receiver; and may be a conventional laptop computer and/or a portable receiver or other electronic device that contains a radiotelephone transceiver. The terminal may be an access terminal, a user equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile console, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communications device, a user agent, or a user device. The access terminal may be a cellular phone, a wireless phone, a Session Initiation Protocol (SIP) phone, a wireless subscriber line (WLL), a PDA, a handheld device with a wireless communication function, a computing device, other data processing device connected to the wireless modem, intra-vehicle device, wearable device, terminal in 5G network, terminal in future evolved PLMN, etc.

Optionally, terminal devices 120 may perform device-to-device (D2D) communication with each other.

Optionally, a 5G system or a 5G network may also be referred to as an NR system or an NR network.

A network device and two terminal devices are shown by way of example in FIG. 1. Optionally, communication system 100 may include multiple network devices, and a different number of terminal devices may be included in the coverage area of each network device. This is not limited in the embodiments of the present invention.

Optionally, communication system 100 may further comprise another network entity, such as a network controller and a mobility management node. This is not limited in the embodiments of the present invention.

It should be understood that a device having a network/system communication function may be referred to as a communication device in embodiments of the present invention. For example, for the communication system 100 shown in FIG. 1, the communication devices may include a network device 110 and a terminal device 120 with a communication function, and the network device 110 and the terminal device 120 may be the specific devices mentioned above and will not be described in detail herein. The communication devices may further include other devices in the communication system 100, such as other network entities such as a network controller and a mobility management node. In the embodiments of the present invention, there are no restrictions on this.

It should be understood that the terms "system" and "network" in the present invention can generally be used interchangeably in the present invention. In the present invention, the term "and/or" is only a relationship relationship describing related objects, and means that there may be three relationships. For example, A and/or B can denote three states: i.e., the independent existence of A, the existence of both A and B, and the independent existence of B. In addition, the symbol "/" in the present invention usually indicates that the previous and subsequent related objects form an "or" relationship.

The method in embodiments of the present invention may be applied to communications in the unlicensed spectrum.

Unlicensed spectrum is spectrum divided by country and region that can be used to communicate with radio devices. Spectrum can be thought of as shared spectrum, meaning that communication devices in different communication systems can use the spectrum as long as they comply with the regulations set by the country or region in the spectrum, and need not apply to the government for exclusive permission to use the spectrum. In order to ensure comfortable coexistence on the unlicensed spectrum of various communication systems that use this spectrum for wireless communication, communication devices can follow the principle of "listen before talk" (LBT) when communicating over unlicensed spectrum, that is, the communication device must first perform a channel listening (or detection channel) before sending the signal over an unlicensed spectrum channel. The communication device can only send a signal if the result of listening to the channel indicates that the channel is free. If the result of a channel sniff performed by a communication device in the unlicensed spectrum indicates that the channel is busy, the communication device cannot send a signal. In unlicensed spectrum, the Maximum Channel Occupancy Time (MCOT) may be the maximum length of time that an unlicensed spectrum channel can be used for signal transmission after a successful LBT. Different channel access schemes have different MCOTs. The maximum value of MCOT may be, for example, 10 ms. It should be understood that MCOT is the time occupied by signal transmission. Channel Busy Time (COT) may be the length of time for a signal to be transmitted using an unlicensed spectrum channel after a successful LBT. The channel occupied by the signal may be intermittent for some time. The maximum duration of the COT should not exceed, for example, 20 ms, and the duration of time occupied by signal transmission in the COT should not exceed the MCOT.

In addition to the unlicensed spectrum communications scenario, the embodiments of the present invention may also be applied to other communications scenarios such as the licensed spectrum communications scenario.

In FIG. 2 is a schematic flow diagram of a communication method 200 according to an embodiment of the present invention. Method 200 includes at least a portion of the following steps.

In step S210, the network device sends a DCI that is used to schedule at least one PDSCH.

The DCI in embodiments of the present invention may be the DCI used for PDSCH scheduling; in which case DCI can be used to trigger the feedback sequence.

It should be understood that the embodiments of the present invention are not limited to this. DCI in embodiments of the present invention may also not be used for PDSCH scheduling; in which case the DCI may also be used to trigger the feedback sequence, eg when the DCI is a DCI with a particular format, the DCI may be used to trigger the feedback sequence.

The feedback sequence mentioned in the embodiments of the present invention may be obtained by cascading at least one piece of feedback information. Each feedback information may correspond to a PDSCH to implement feedback corresponding to the PDSCH. For example, non-acknowledge (NACK) feedback information is used to feedback to the network device if the corresponding PDSCH is lost or received incorrectly, and acknowledgment (ACK) feedback information is used to feedback to the network device if the corresponding PDSCH is received correctly.

In embodiments of the present invention, sending or receiving channels (such as PDSCH, Physical Downlink Control Channel (PDCCH), or Physical Uplink Control Channel (PUCCH)) may refer to sending or receiving information carried on the channels.

In step S220, the terminal device receives the DCI from the network device.

The DCI in embodiments of the present invention may be carried on the PDCCH. The terminal device may receive the DCI by discovering the search area of the PDCCH.

In step S230, based on whether the first information field contained in the DCI is used to start the feedback sequence, the terminal device determines a transmission parameter for sending the feedback sequence over the physical channel.

In embodiments of the present invention, DCI may be used to trigger a feedback sequence. An implementation in which DCI is used to trigger a feedback sequence can be achieved using the following two modes. In an implementation, the feedback sequence may be triggered by the first information field (ie, the first information field is used to start the feedback sequence). In another implementation, the feedback sequence may not be triggered by the first information field (i.e., the first information field is not used to trigger the feedback sequence), i.e., the feedback sequence may be triggered without the first information field; in particular, the feedback sequence may be triggered by the DCI scheduling the PDSCH.

Optionally, in embodiments of the present invention, the first information field contained in the DCI may contain at least one bit. When the value of at least one bit is a first value (which may be a value in a range of values), this indicates that the first information field is used to start the feedback sequence. When the value of at least one bit is a second value (which may be a value in a different range of values), this indicates that the first information field is not used to trigger the feedback sequence, in which case the feedback sequence can be triggered by DCI scheduling PDSCH.

For example, assuming that the first information field contained in the DCI contains a bit, when the value of the bit is 1, this indicates that the first information field is used to start a feedback sequence; and when the bit value is 0, it indicates that the first information field is not used to start the feedback sequence.

For example, assuming that the first information field contained in the DCI contains several bits, when not all of the values of several bits are 0, this indicates that the first information field is used to start a feedback sequence; and when all bit values are 0, this indicates that the first information field is not used to start the feedback sequence.

Optionally, in embodiments of the present invention, the PDSCH corresponding to the feedback sequence triggered by the first information field and the PDSCH corresponding to the feedback sequence not triggered by the first information field may be the same or different.

In an implementation, if the first information field is not used to trigger a feedback sequence, the PDSCH corresponding to the feedback sequence triggered by DCI may be a DCI scheduled PDSCH or a PDSCH determined based on a DCI scheduled PDSCH.

Specifically, the time window may be determined based on the PDSCH scheduled by the DCI, and the PDSCH in the time window is received as the PDSCH corresponding to the transmitted feedback sequence.

For example, based on the time unit occupied by the DCI scheduled PDSCH, N time units are counted up to the time unit, and the N time unit PDSCH and the DCI scheduled PDSCH are received as the feedback sequence targeted PDSCH.

For example, based on the unit of time occupied by the PDSCH scheduled by the DCI, N units of time after the unit of time are counted, and the PDSCH in N units of time and the PDSCH scheduled by the DCI are received as the PDSCH targeted to the feedback sequence.

For example, based on the unit of time occupied by the PDSCH, S units of time before the unit of time and M units of time after the unit of time are counted, and the PDSCH in units of time S, the PDSCH in units of time M, and the PDSCH scheduled DCI are received as the PDSCH targeted by feedback sequence.

It should be understood that the unit of time mentioned in the embodiments of the present invention may be a time interval, a mini-time interval, or a symbol, etc.

Or, if the first information field is not used to trigger the feedback sequence, the PDSCH corresponding to the feedback sequence triggered by the DCI may include the PDSCH scheduled by the DCI and L forward PDSCHs and/or K reverse PDSCHs based on the PDSCH scheduled by the DCI.

In embodiments of the present invention, if the first information field is used to trigger a feedback sequence, the feedback sequence triggered by the first information field may be determined without reference to the PDSCH scheduled by the current DCI, or, of course, may be determined based on the PDSCH scheduled current DCI.

Optionally, the PDSCH corresponding to the feedback sequence triggered by the first information field may be at least one of the following.

1) PDSCH corresponding to at least one HARQ process index supported by the terminal device.

The PDSCH corresponding to the feedback sequence triggered by the first information field may be a PDSCH corresponding to all or part of the HARQ process indices supported by the terminal device. If there are unscheduled process indexes, placeholder information can be added to the feedback sequence. For example, NACK information is used as the padding information. In particular, the PDSCH feedback information about which process indexes corresponding to the PDSCH can be indicated in the DCI.

2) PDSCH received on the PDSCH corresponding to at least one HARQ process index supported by the terminal device.

The PDSCH corresponding to the feedback sequence triggered by the first information field may be the PDSCH received on the PDSCH corresponding to all HARQ process indexes supported by the terminal device. In particular, the PDSCH feedback information about which process indexes corresponding to the PDSCHs that are received may be indicated in the DCI.

It should be understood that the received PDSCH referred to in embodiments of the present invention may refer to a PDSCH that is learned by the terminal device and scheduled by the network device, and the terminal device performs a discovery operation for the scheduled PDSCH that may or may not be incorrectly received.

3) PDSCH corresponding to at least one HARQ process index group supported by the terminal device.

In particular, the HARQ process indexes supported by the terminal device may be grouped, and the terminal device may provide feedback to the PDSCH corresponding to all or part of the groups of HARQ process indexes. If there are unscheduled process indexes, placeholder information can be added to the feedback sequence. For example, NACK information is used as the padding information. In particular, the PDSCH feedback information about which process index groups corresponding to the PDSCH may be indicated in the DCI.

4) A PDSCH received on a PDSCH corresponding to at least one group of HARQ process indexes supported by the terminal device.

In particular, the HARQ process indexes supported by the terminal device may be grouped, and the terminal device may provide feedback of the PDSCH received on the PDSCH corresponding to all or part of the HARQ process index groups. In particular, the PDSCH feedback information about which process index groups corresponding to the PDSCHs that are received may be indicated in the DCI.

5) The PDSCH is included in at least one PDSCH group.

In particular, the PDSCHs may be grouped, and the terminal apparatus may return feedback information of all PDSCHs in at least one PDSCH group. If there are unscheduled PDSCHs, padding information may be added to the feedback sequence. For example, NACK information is used as the padding information. In particular, feedback information about which PDSCH groups may be indicated in the DCI.

6) PDSCH received on PDSCHs included in at least one PDSCH group.

In particular, the PDSCHs may be grouped, and the terminal apparatus may return PDSCH feedback information received in at least one PDSCH group. In particular, PDSCH feedback information about which PDSCH groups receive the PDSCH may be indicated in the DCI.

7) PDSCH received in a certain time period prior to DCI.

Specifically, based on the unit of time occupied by the DCI, the PDSCH received in a specific time period up to the unit of time may be triggered by the first information field for feedback information.

8) PDSCH received in a certain period of time before the PDSCH scheduled by DCI.

Specifically, based on the time unit occupied by the PDSCH scheduled by the DCI, the PDSCH received in the specific time period up to the time unit may be triggered by the first information field for feedback information.

9) The first PDSCH received before the DCI, wherein the first PDSCH feedback information is not allocated with transmission resources.

In particular, if the PDSCH received before the DCI is not allocated a transmission resource for sending feedback information, then the first information field may trigger feedback information for the PDSCH.

10) Second PDSCH received before DCI, no second PDSCH feedback information is sent.

For example, the second PDSCH is received before the current DCI. If a transmission resource is allocated to the second PDSCH feedback information and the second PDSCH feedback information is not sent for a certain reason, the first information field may trigger the feedback information for the PDSCH.

In NR Release 16 (Rel-16), the Unlicensed Spectrum Access (NR-U) system based on NR can support the introduction of a special HARQ feedback timing value in DCI, and this special value indicates that the feedback timing corresponding to PDSCH, planned with DCI and PUCCH resources cannot yet be determined. Later, the network device may send a start signaling, and the terminal device may determine based on the start signaling that feedback information corresponding to the previous PDSCH should be transmitted. In this case, a separate trigger signaling is required to trigger the feedback information corresponding to the previous PDSCH. Then, when it is necessary to perform data scheduling at the terminal device and start the feedback information corresponding to the previous PDSCH in the time slot, the network device must send two DCI fragments, which will greatly reduce the DCI transmission efficiency. In embodiments of the present invention, the PDSCH that needs to send feedback information can be determined based on whether the first DCI information field triggers feedback information to avoid sending one DCI fragment to trigger feedback information of a PDSCH that does not send feedback information. , thereby saving signaling overhead.

If the first information field is used to start the feedback sequence, the PDSCH corresponding to the feedback sequence cannot be explicitly indicated by the first information field, in particular, it can be determined based on a preset rule in the terminal device or based on other network configuration signaling. devices.

In embodiments of the present invention, the PDSCH corresponding to the feedback sequence triggered by the first information field may also be explicitly indicated by the first information field.

For example, if the first information field contains multiple bits, each of the set of bits represents one PDSCH, respectively. For example, the first bit represents the PDSCH scheduled by the current DCI; the second bit represents the PDSCH, which is one PDSCH before the PDSCH scheduled by the current DCI; the third bit represents the PDSCH that is two PDSCHs ahead of the PDSCH scheduled by the current DCI, and so on. 1 means that the feedback information of the corresponding PDSCH needs to be sent, and 0 means that the feedback information of the corresponding PDSCH does not need to be sent. In other words, sending the feedback information of the corresponding PDSCH may be triggered by the bit mapping method. If all of the multiple bits are 0, this means that the first information field is not used to start the feedback sequence.

For example, if the first information field contains several bits, and each bit represents a PDSCH group, when the bit value is 1, this indicates that feedback information of the corresponding PDSCH group needs to be sent; and when the value of the bit is 0, it indicates that the feedback information of the corresponding PDSCH group does not need to be sent. That is, sending the feedback information of the corresponding PDSCH group may be triggered by the bit mapping method. If all of the multiple bits are 0, then the first information field is not used to start the feedback sequence.

The feedback sequence in embodiments of the present invention may be generated using a semi-static HARQ codebook. In this case, the number of bits of feedback information carried in the PUCCH may be determined in a semi-static manner, regardless of the actual scheduling situation.

Or, the HARQ feedback sequence in the embodiments of the present invention may also be generated based on the dynamic HARQ codebook. The terminal apparatus may determine the number of bits of feedback information based on the scheduling of the network device, which may reduce the feedback overhead. In this method, the terminal device may determine the number of actually scheduled PDSCHs based on the Downlink Assignment Index (DAI) in the DCI. For DCI in format 1_0, the DAI information field may always exist, that is, when the feedback sequence is generated using the HARQ semi-static codebook generation method and the DAI information field is not required, the DAI information field still exists in the DCI. For DCI in 1_1 format, the feedback sequence may be generated using the HARQ dynamic codebook generation method, in which case there may be a DAI information field, or the DCI may not contain a DAI information field.

The above introduces the definition of a PDSCH corresponding to a feedback sequence if the first information field is used to start the feedback sequence and if the first information field is not used to start the feedback sequence. The following shows how to determine the transmission parameter for sending the feedback sequence based on whether the first information field triggers the feedback sequence.

Before it will be described how to determine the transmission parameter for sending the feedback sequence, the transmission parameter is first introduced.

The transmission parameter referred to in the embodiments of the present invention may refer to parameters used by the terminal device to send a feedback sequence over a physical channel, and may include at least one of the following: a unit of feedback time taken to send a feedback sequence, a time a HARQ feedback characteristic occupied to send the feedback sequence, a PUCCH resource occupied to send the feedback sequence, and a PUCCH transmission power occupied to send the feedback sequence.

The unit of feedback time used to send the feedback sequence can be a time slot, mini-slot, character, etc.

HARQ feedback timing may refer to the number of time units between feedback time units and specific time units. The specific unit of time may be one of: units of time occupied by the PDSCH scheduled by the DCI; units of time separated by certain units of time from the PDSCH scheduled by the DCI; units of time occupied by DCI; or units of time separated by certain units of time from the unit of time occupied by the DCI; downlink resource end position after DCI or PDSCH scheduled by DCI, downlink-to-uplink switching point position, or uplink resource start position (in particular, end position of first downlink resource after DCI or PDSCH scheduled by DCI, the position of the first downlink-to-uplink switching point after DCI or PDSCH scheduled by DCI, or the initial position of the first uplink resource after DCI or PDSCH scheduled by DCI).

The PUCCH resource may refer to the occupied physical resource per unit of feedback time during transmission of the feedback sequence using PUCCH. For example, the PUCCH resource may be a symbol in a unit of feedback time (eg, timeslot or mini-slot). The PUCCH resource in embodiments of the present invention may be a resource for at least one of the following dimensions: time domain, frequency domain, or code domain.

The transmit power of the PUCCH may be the transmit power received by the terminal device when the PUCCH is used to transmit a feedback sequence.

It should be understood that the transmission parameter in the embodiments of the present invention may be a transmission parameter, except for the unit of feedback time, PUCCH resource, HARQ feedback timing, and PUCCH transmit power, which is not specifically limited to the embodiments of the present invention.

In embodiments of the present invention, if the first information field is used to start the feedback sequence and the first information field is not used to start the feedback sequence, the physical channel transmission parameter may be appropriately provided from different transmission parameter sets.

Specifically, for the same type of transmission parameter, the first transmission parameter set and the second transmission parameter set different from the first transmission parameter set can be set respectively at the terminal device. If the first information field is used to start the feedback sequence, the used transmission parameter may be provided from the first set of transmission parameters. If the first information field is not used to trigger the feedback sequence, the transmission parameter used may be provided from the second set of transmission parameters.

In embodiments of the present invention, when the PDSCH corresponding to the feedback sequence triggered by the first information field is the PDSCH before the DCI, the time interval between the DCI and the PUCCH for sending the feedback sequence may be very small (for example, which may mean that the PDSCH has been demodulated and feedback information has been prepared), but the feedback sequences may include a large amount of information. If the first information field is not used to start the feedback sequence and the start of the feedback sequence is implemented by the DCI scheduling the PDSCH, the feedback sequence may include the PDSCH scheduled by the DCI. In this case, it is necessary to provide a sufficient decode-receive delay, based on which it can be seen that the characteristics corresponding to the two feedback modes are different, so the parameters of the transmission channels are also different. In embodiments of the present invention, the range of values of each transmission parameter may be configured based on the requirements of various feedback modes to provide performance optimization.

Both the first transmission parameter set and the second transmission parameter set may be preset in the terminal device based on a protocol or configured by a network device for the terminal device. Or, one of the transmission parameter sets is preset in the terminal device based on the protocol, and the other of the transmission parameter sets may be configured by the network device for the terminal device.

The first set of transmission parameters and the second set of transmission parameters may not have the same transmission parameters, or may have at least the same transmission parameter.

For example, the first transmission parameter set is a subset of the second transmission parameter set; or the second transmission parameter set is a subset of the first transmission parameter set. In an implementation, the network device can only be used to configure the transmission parameter set for the terminal device and to indicate to the terminal device which transmission parameter in the transmission parameter set can be used as another transmission parameter set, thereby saving bit overhead.

The following describes an example that the first transmission parameter set is a subset of the second transmission parameter set.

In an implementation, assuming that a transfer parameter in the second transfer parameter set is a transfer parameter with a specific selection order (that is, when a transfer parameter is provided from the second transfer option set, the transfer parameter is selected in a specific order until the corresponding transfer parameter is selected) , then the transmission parameter in the first transmission parameter set may be the first transmission parameter A in the second transmission parameter set.

In another implementation, the first set of transmission parameters may consist of a transmission parameter whose values are within a certain range in the second set of transmission parameters. For example, the first set of transmission parameters consists of a transmission parameter whose values do not exceed a certain threshold in the second set of transmission parameters.

It should be understood that the circuit shown in FIG. 2 describes an example of how the DCI triggers a feedback sequence. In some embodiments, the transmission parameter set may also include an element that may be used to indicate that the feedback information does not need to be sent at the present time. For example, the second set of transmission parameters may include an element that indicates that feedback information is not required to be sent at present, and if the terminal device selects this element from the second set of transmission parameters, the terminal device may not need to send feedback information for some time. ; in particular, the terminal device may not need to send the PDSCH feedback information scheduled by the DCI, but may send other feedback information, or all of the feedback information does not need to be sent.

The transmission parameter set referred to in the embodiments of the present invention may be a HARQ feedback timing set, a PUCCH resource set, or a PUCCH transmit power set.

The following describes an example that the transmission parameter is respectively a HARQ feedback timing and a PUCCH resource, and the transmission parameter sets are respectively a HARQ feedback timing set and a PUCCH resource set.

In an implementation, each of the first transmission parameter set and the second transmission parameter set are HARQ feedback timing sets, hereinafter referred to as the first HARQ feedback timing set and the second HARQ feedback timing set, respectively.

Herein, the number of time units included in the first set of HARQ feedback timing is different from the number of time units included in the second set of HARQ feedback timing, and/or the size of the time units included in the first set of HARQ feedback timing, different from the size of the time units included in the second set of HARQ feedback timings.

In particular, the granularity of the time units included in the first set of HARQ feedback timings is different from the granularity of the time units included in the second set of HARQ feedback timings.

In embodiments of the present invention, the granularity of the time units included in the HARQ feedback timing sets may refer to the time unit unit. For example, the granularity of a unit of time could be a timeslot, a mini-timeslot, or a symbol, etc.

Optionally, the granularity of the time unit included in the first set of HARQ feedback timings is greater than the granularity of the time unit included in the second set of HARQ feedback timings.

In particular, when the feedback sequence is triggered by the first information field, the triggered feedback sequence is typically the PDSCH feedback information before the DCI. In this case, the time interval between DCI and PUCCH used to send the feedback sequence may be very small, and the time unit granularity included in the first set of HARQ feedback timings may be smaller than the time unit granularity included in the second set. HARQ feedback timing.

For example, the granularity of a unit of time included in the second set of transmission parameters may be a timeslot, while the granularity of a unit of time included in the first set of transmission parameters may be a mini-slot or a symbol.

Or, the granularity of the time unit included in the second transmission parameter set is a time interval, while the granularity of the time unit included in the first transmission parameter set is a time interval and a symbol.

For example, the granularity of the second HARQ feedback timing set may be a time interval, and specifically, the second HARQ feedback timing set is {1, 2, 3, 4, 5, 6, 7, 8}, the unit of which is time interval. The unit of at least one of the elements included in the first set of HARQ feedback timings is not a timeslot, and specifically, the second set of HARQ feedback timings is {1 symbol, 2 symbols, 7 symbols, 1 timeslot , 2 slots, 3 slots}, or the second set of HARQ feedback timings is {1, 2, 3, 4, 5, 6, 7, 8} whose unit is a sub-slot (e.g., the sub-slot length is 1 symbol , 2 characters, 7 characters).

For example, the number of elements in the second set of HARQ feedback timing is different from the number of elements in the first set of HARQ feedback timing, and/or the value of at least one of the elements in the second set of HARQ feedback timing is different from the value of at least one of the elements in the first set of HARQ feedback timing. For example, the second set of HARQ feedback timings is {1, 2, 4, 6, 8, 10, 12, 16}, whose unit is time interval, and the first set of HARQ feedback timings is {1 symbol, 2 characters, 7 characters, 1 timeslot}.

The elements included in the second transmission parameter set and the first transmission parameter set are shown in Table 1 below.

Table 1

In another implementation, the first transmission parameter set and the second transmission parameter set may be PUCCH resource sets, respectively. This document assumes that the first transmission parameter set is the first PUCCH resource set and the second transmission parameter set is the second PUCCH resource set.

The first PUCCH resource set may be a subset of the second PUCCH resource set.

In particular, the first B elements in the second PUCCH resource set may constitute the first PUCCH resource set. Or, elements with a specific PUCCH format in the second PUCCH resource set may constitute the first PUCCH resource set.

The second set of PUCCH resources in embodiments of the present invention can be shown in Table 2 below. The first set of PUCCH resources may be part of the elements shown in Table 2 below. The Physical Resource Block (PRB) offset in Table 2 is the offset of the PUCCH resource PRB relative to the BWP boundary.

table 2

In embodiments of the present invention, the terminal device may select a transmission parameter from a first transmission parameter set or a second transmission parameter set based on a second information field included in the DCI.

Taking the transmission parameter to be a PUCCH resource, as an example, if the first information field is used to start a feedback sequence, the HARQ feedback timing may be selected from the first set of HARQ feedback timings based on the HARQ feedback indicator represented by the bit (bits) in the second information field. When the second information field is not used to trigger the feedback sequence, the HARQ feedback timing may be selected from the second set of HARQ feedback timings based on the HARQ feedback indicator represented by the bit(s) in the second information field.

In particular, the PUCCH resources used by the terminal device to send the feedback sequence may be indicated by the PUCCH resource indication information field in the DCI. The terminal device may predetermine a PUCCH resource set (eg, a first PUCCH resource set or a second PUCCH resource set), which may include 16 PUCCH resources or less. The terminal device may determine the PUCCH resource from the PUCCH resource set as the currently used PUCCH resource according to the PUCCH resource indication information field (second information field).

Taking the transmission parameter to be the HARQ feedback timing as an example, the terminal device may determine a set of HARQ feedback timings (for example, a first set of HARQ feedback timings or a second set of HARQ feedback timings), and the network device may indicate by the DCI a HARQ feedback timing value set to k. If the PDSCH scheduled by the DCI is transmitted in time slot n, the PDSCH feedback information may be transmitted in time slot n+k. The first set of HARQ feedback timings or the second set of HARQ feedback timings mentioned above may include up to 8 feedback timings. For DCI format 1_0, the set is pre-set on the terminal device based on the protocol. For DCI in 1_1 format, the feedback timing set can be configured by the network device.

For example, as shown in Table 1, assuming that the implementation of the first set of HARQ feedback timing is 2-a, if the first information field is used to start the feedback sequence and the bit value of the second information field is 111, the feedback timing is 4 time interval.

In embodiments of the present invention, since the number of transmission parameters included in the first transmission parameter set and the number of transmission parameters included in the second transmission parameter set may be different, the number of bits in the second information field may be different.

For example, when the first transmission parameter set includes 8 transmission parameters, the bit length occupied by the second information field may be 3, and when the first transmission parameter set includes 10 transmission parameters, the bit length occupied by the second information field may be 4 .

Because if the first information field is used to start the feedback sequence and if the first information field is not used to start the feedback sequence, the transmission parameter sets for selecting the transmission parameter are different, the bit length of the second information field can be determined based on whether the first information field starts information field feedback sequence.

For example, as shown in Table 1, if the first information field is used to start a feedback sequence, and the implementation of the first set of HARQ feedback timing is 1-a, the length of the second information field is 2 bits.

As described above, the transmission parameter may be provided from the first transmission parameter set or the second transmission parameter set for sending the feedback sequence, but in embodiments of the present invention, the method for determining the transmission parameter based on whether the first information field is used to trigger the feedback sequence, is not limited to this, and embodiments of the present invention may also have other implementations.

In an implementation, the terminal device may determine the transmission parameter based on the third information field. When the transmission parameter is determined, it can be determined based on whether the first information field triggers the feedback sequence whether the transmission parameter determined based on the third information field is the transmission parameter expected by the terminal device. If it is a transmission parameter expected by the terminal device, the terminal device may send the feedback sequence by using the transmission parameter; or, the terminal device may not send the feedback sequence using the transmission parameter, eg, it may discard the feedback sequence or wait for an instruction from the subsequent DCI to send feedback information in the feedback sequence.

For example, for the HARQ feedback timing, the feedback timing available to the terminal device is 8 feedback timings in the set {1, 2, 3, 4, 5, 6, 7, 8}. {1, 2, 3, 4, 5, 6} in 8 feedback timings are used to send the feedback sequence triggered by the first information field, and {1, 2, 3, 4, 5, 6, 7, 8} all can be used to send a feedback sequence that is not triggered by the first information field. The third information field is taken as the HARQ feedback timing information field, and the value of the information field is 111, so the terminal device can select the 8th feedback timing from the feedback timing set, that is, 8. In this case, the terminal device can check , based on whether the first information field triggers a feedback sequence, whether the selected feedback timing is the expected feedback timing. For example, if the first information field is used to start a feedback sequence, the selected feedback timing is considered not to be the expected feedback timing, and the terminal device may not need to send the feedback sequence. If the first information field is not used to trigger the feedback sequence, the selected feedback timing is considered to be the expected feedback timing, and the terminal device may send the feedback sequence based on the selected feedback timing.

In another implementation, the terminal device may determine, based on whether the first information field is used to start a feedback sequence, a starting position in the time domain used to determine, based on the feedback timing, a unit of feedback time. The feedback time unit is determined based on the starting position in the time domain. In particular, the terminal device may add the feedback timing to the start position in the time domain to obtain a time unit as the feedback time unit.

In an implementation, if the first information field is used to start the feedback sequence, the start time domain position is the end position of the downlink resource after DCI, the position of the downlink to uplink switching point, or the start position of the uplink resource. For example, the downlink resource end position, the downlink-to-uplink switching point position, or the uplink resource start position may be the downlink resource end position in the COT where the terminal device is located, the downlink switching point position to the uplink in the COT where the terminal device resides, or the starting position of the uplink resource in the COT where the terminal device resides.

The start position in the time domain is: the end position of the first downlink resource, the first downlink-to-uplink switching point position, or the start position of the first uplink resource that is after the DCI or PDSCH scheduled by the DCI in the COT where the DCI is located.

In particular, if the end position of the first downlink resource after DCI or PDSCH scheduled by DCI, the position of the first downlink switching point to uplink after DCI or PDSCH scheduled by DCI, or the first uplink start position after DCI or The PDSCH scheduled by the DCI is taken as the start position in the time domain, the length of the time domain between the start position in the time domain and the farthest unit of time occupied by sending the feedback sequence to be sent can be shortened. In this case, the difference in time domain between elements of similar size in the HARQ feedback timing set may be small to more accurately indicate the timing of the HARQ feedback. If the first information field is used to trigger the feedback sequence, a more precise indication may make the choice of feedback resources more flexible, and there is a better chance of choosing a resource close to DCI to transmit the feedback sequence.

For example, as shown in FIG. 3, the terminal device receives DCI in time slot m. DCI is used to schedule PDSCH transmission in time slot n. Slot m is before slot n, or slot m is slot n, and the value indicated by the HARQ feedback timing is k. When the first information field indicates that it is not used to trigger the terminal device to send a feedback sequence (i.e., case A in the figure), the terminal device determines that the feedback information corresponding to the PDSCH scheduled by the DCI is transmitted in the time slot n+k. When the first information field indicates that it is being used to trigger the terminal device to send a feedback sequence (i.e., case B in the figure), the terminal device determines that the feedback sequence is being transmitted in time interval q+k, where q is the end the position of the first downlink resource after time slot m, or the position of the first downlink-to-uplink switching point after time slot m, or the start position of the first uplink resource after time slot m.

Optionally, the first information field in embodiments of the present invention may be a DAI information field.

In particular, the DAI information field is used to count the PDSCH, which is used to generate a feedback sequence based on the dynamic HARQ codebook. When the DCI format is 1_0 and the feedback sequence is generated based on the semi-static HARQ codebook, the DAI information field will be received as a useless information field, and then the DAI information field may be received as the first information field in embodiments of the present invention.

For example, when the DAI value is 11, it indicates that the terminal device is triggered to send a feedback sequence, while other DAI values indicate that DAI is not used to trigger the terminal device to send a feedback sequence.

Optionally, in embodiments of the present invention, the first information field is a PUCCH resource indication information field.

When the first information field is the PUCCH resource indication information field, the first information field, when indicating the feedback sequence feedback, indicates the PUCCH resource to send the feedback sequence.

Assuming that the indication range of the PUCCH resource indication information field is N available resources, when the PUCCH resource indication information field indicates a specific resource of the N resources, the PUCCH resource indication information field is used to start the feedback sequence. In this case, the terminal device may send a feedback sequence through a particular resource.

For example, as shown in Table 3 below, the PUCCH resource indication information field may indicate 8 PUCCH resources. When the value of the PUCCH resource indication information field is 111, it means that the PUCCH resource is used to start the feedback sequence and can be used to send the feedback sequence. In this case, the HARQ feedback timing and/or PUCCH transmit power may be selected from an appropriate set of transmission parameters.

Table 3

Therefore, in embodiments of the present invention, the existing information field can be reused by taking the DAI information field and the PUCCH resource information field as the first information field, thus avoiding a large number of overhead bits.

In embodiments of the present invention, the HARQ feedback timing information field or the PUCCH transmit power information field may also be reused as the first information field, which is not limited to the embodiments of the present invention.

In step S240, the terminal device sends a feedback sequence over the physical channel using the transmission parameter.

In step S250, based on whether the first information field contained in the DCI is used to start the feedback sequence, the network device determines a transmission parameter for receiving the feedback sequence over the physical channel.

For the manner in which the network device determines the transmission parameter based on whether the first information field contained in the DCI is used to start the feedback sequence, the above description can be referred to that the terminal device determines the transmission parameter based on whether it starts the first information field is the feedback sequence, which will not be repeated in this document for the sake of brevity.

It should be understood that the method shown in FIG. 2 is only a specific implementation in the embodiments of the present invention and should not cause any particular restrictions on the embodiments of the present invention.

For example, in the method shown in FIG. 2, the network device determines a transmission parameter for receiving the feedback sequence based on whether the first information field is used to trigger the feedback sequence, but the embodiments of the present invention are not limited to this. In particular, in embodiments of the present invention, the network device may first determine the transmission parameter of the physical channel used to send the feedback sequence, and determine based on the transmission parameter whether the feedback sequence is triggered by the first information field.

In step S260, the network device receives the feedback sequence over the physical channel using the transmission parameter.

After receiving the feedback sequence, the network device may schedule subsequent data based on the feedback sequence. For example, if the feedback information of at least one PDSCH in the feedback sequence is NACK, the network device may schedule at least one PDSCH again.

In embodiments of the present invention, the DCI may comprise a first information field that may or may not be used to trigger the feedback sequence, and the terminal device may send the feedback sequence based on whether the first information field is used to trigger the feedback sequence, such that it can flexibly select an appropriate transmission parameter based on whether the feedback sequence is triggered by the first information field, and then the communication performance is improved.

It should be understood that the number of steps described in the method shown in FIG. 2 does not represent the sequence in which the steps are performed. For example, step S250 may be performed before steps S220, S230, or S240.

In embodiments of the present invention, the transmission parameter of the physical channel may be determined based on the triggering mode of the feedback sequence. The above basically represents that the transmission parameter of the physical channel can be determined based on whether the first DCI information field is used to trigger the feedback sequence, that is, it is possible to distinguish the trigger mode as triggering by the first information field or not by the first information field, but the options implementation of the present invention is not limited to this. Embodiments of the present invention may also have other trigger modes. All technical solutions for determining the transmission parameter of the physical channel based on the triggering mode of the feedback sequence should fall within the scope of the legal protection of the embodiments of the present invention.

Or, in embodiments of the present invention, the first information field may inevitably trigger a feedback sequence, but the PDSCHs corresponding to the feedback sequences triggered by the first information field are different in case of different values. In this case, the transmission parameter of the physical channel may be determined based on the value of the first information field. The specific determination mode may refer to the description above. For example, when the PDSCH corresponding to the triggered feedback sequence is PDSCH A, the transmission parameter selection mode may refer to the transmission parameter selection mode if the first information field is used to start the feedback sequence. When the PDSCH corresponding to the triggered feedback sequence is PDSCH B, the transmission parameter selection mode may refer to the transmission parameter selection mode if the first information field is not used to start the feedback sequence.

Or, in embodiments of the present invention, the PDSCH corresponding to the feedback sequence triggered by the DCI may be determined by other modes than the first information field. In this case, the transmission parameter of the physical channel may be determined based on the PDSCH corresponding to the feedback sequence, and the specific determination mode may refer to the above description. For example, when the PDSCH corresponding to the triggered feedback sequence is PDSCH A, the transmission parameter selection mode may refer to the transmission parameter selection mode if the first information field is used to start the feedback sequence. When the PDSCH corresponding to the triggered feedback sequence is PDSCH B, the transmission parameter selection mode may refer to the transmission parameter selection mode if the first information field is not used to start the feedback sequence.

In FIG. 4 is a schematic block diagram of a terminal device 300 according to an embodiment of the present invention. The terminal device 300 includes a communication unit 310 and a processing unit 320 .

Communication unit 310 is configured to receive a DCI, wherein the DCI contains a first information field and is used to schedule at least one PDSCH.

The processing unit 320 is configured, based on whether the first information field is used to trigger the feedback sequence, to determine a transmission parameter for sending the feedback sequence over the physical channel.

The communication unit 310 is further configured to send the feedback sequence over the physical channel by using a transmission parameter.

Optionally, in embodiments of the present invention, if the first information field is used to trigger a feedback sequence, a transmission parameter is provided from the first set of transmission parameters; if the first information field is not used to start the feedback sequence, the transmission parameter is provided from the second set of transmission parameters. The first set of transmission parameters is different from the second set of transmission parameters.

Optionally, in embodiments of the present invention, the first transmission parameter set is a subset of the second transmission parameter set; or the second transmission parameter set is a subset of the first transmission parameter set.

Optionally, in embodiments of the present invention, the transmission parameter is provided from the first transmission parameter set or the second transmission parameter set based on the second information field included in the DCI.

Optionally, in embodiments of the present invention, the bit length of the second information field is determined based on the value of the first information field.

Optionally, in embodiments of the present invention, each of the first transmission parameter set and the second transmission parameter set is a set of HARQ feedback timings.

The number of time units included in the first transmission parameter set is different from the number of time units included in the second transmission parameter set and/or the size of the time units included in the first transmission parameter set is different from the size of the time units included in the second transmission parameter set .

Optionally, in embodiments of the present invention, the granularity of time units included in the first set of transmission parameters is different from the granularity of time units included in the second set of transmission parameters.

Optionally, in embodiments of the present invention, the processing unit 320 is further configured to:

determining a transmission parameter based on the value of the third information field included in the DCI; and

based on whether the first information field is used to start the feedback sequence, checking if the transmission parameter is the transmission parameter used to send the feedback sequence.

Optionally, in embodiments of the present invention, the processing unit 320 is further configured to:

based on whether the first information field is used to start a feedback sequence, determining a starting position in the time domain used to determine, based on the feedback timing, a feedback time unit; and

determining a unit of feedback time based on an initial position in the time domain.

Optionally, in embodiments of the present invention, if the first information field is used to start a feedback sequence, the start position in the time domain is one of: the end position of the first downlink resource after DCI, the first downlink-to-uplink switching point position link after DCI or the starting position of the first uplink resource after DCI.

Optionally, in embodiments of the present invention, the first information field is a DAI information field; or

the first information field is the PUCCH resource indication information field.

Optionally, in embodiments of the present invention, when the first information field is a DAI information field, the feedback sequence is generated based on the HARQ semi-static codebook generation method, and the DCI format is 1_0.

Optionally, in embodiments of the present invention, when the first information field is the PUCCH resource indication information field, the first information field, when indicating the feedback sequence feedback, indicates the PUCCH resource used to send the feedback sequence.

Optionally, in embodiments of the present invention, the transmission parameter includes at least one of the following:

the feedback time unit used to send the feedback sequence, the PUCCH resource used to send the feedback sequence, the PUCCH transmit power used to send the feedback sequence, or the feedback timing used to send the feedback sequence.

Optionally, in embodiments of the present invention, the PDSCH corresponding to the feedback sequence triggered by the first information field is at least one of the following:

a PDSCH corresponding to at least one HARQ process index supported by the terminal device;

the PDSCH received on the PDSCH corresponding to at least one HARQ process index supported by the terminal device;

a PDSCH corresponding to at least one HARQ process index group supported by the terminal device;

the PDSCH received on the PDSCH corresponding to at least one HARQ process index group supported by the terminal device;

a PDSCH included in at least one PDSCH group;

the PDSCH received on the PDSCHs included in at least one PDSCH group;

PDSCH received in a certain period of time before DCI;

PDSCH received in a certain period of time before PDSCH scheduled by DCI;

the first PDSCH received before the DCI, wherein the first PDSCH feedback information is not allocated transmission resources; and

the second PDSCH received before the DCI, and the second PDSCH feedback information is not sent.

It should be understood that the terminal device 300 may be used to implement the corresponding operations implemented by the terminal device in the method 200 and will not be described in detail herein for simplicity.

In FIG. 5 is a block diagram of a network device 400 according to an embodiment of the present invention. The network device 400 includes a communication unit 410 and a processing unit 420 .

The communication unit 410 is configured to send a DCI, the DCI contains a first information field and is used to schedule at least one PDSCH. Processing unit 420 is configured, based on whether the first information field is used to trigger the feedback sequence, to determine a transmission parameter for receiving the feedback sequence over the physical channel. The communication unit 410 is further configured to receive the feedback sequence over the physical channel using the transmission parameter.

Optionally, in embodiments of the present invention, if the first information field is used to trigger a feedback sequence, a transmission parameter is provided from the first set of transmission parameters; if the first information field is not used to start the feedback sequence, the transmission parameter is provided from the second set of transmission parameters. The first set of transmission parameters is different from the second set of transmission parameters.

Optionally, in embodiments of the present invention, the first transmission parameter set is a subset of the second transmission parameter set; or the second transmission parameter set is a subset of the first transmission parameter set.

Optionally, in embodiments of the present invention, the transmission parameter is a transmission parameter corresponding to a second information field included in the DCI in the first transmission parameter set or in the second transmission parameter set.

Optionally, in embodiments of the present invention, the bit length of the second information field is determined based on the value of the first information field.

Optionally, in embodiments of the present invention, each of the first transmission parameter set and the second transmission parameter set is a set of HARQ feedback timings.

The number of time units included in the first transmission parameter set is different from the number of time units included in the second transmission parameter set and/or the size of the time units included in the first transmission parameter set is different from the size of the time units included in the second transmission parameter set .

Optionally, in embodiments of the present invention, the granularity of time units included in the first set of transmission parameters is different from the granularity of time units included in the second set of transmission parameters.

Optionally, in embodiments of the present invention, the processing unit 420 is further configured to:

based on whether the first information field is used to start a feedback sequence, determining a starting position in the time domain used to determine, based on the feedback timing, a feedback time unit; and

determining a unit of feedback time based on an initial position in the time domain.

Optionally, in embodiments of the present invention, if the first information field is used to start a feedback sequence, the start position in the time domain is one of: the end position of the first downlink resource after DCI, the first downlink-to-uplink switching point position link after DCI or the starting position of the first uplink resource after DCI.

Optionally, in embodiments of the present invention, the first information field is a DAI information field; or

the first information field is the PUCCH resource indication information field.

Optionally, in embodiments of the present invention, when the first information field is a DAI information field, the feedback sequence is generated based on the HARQ semi-static codebook generation method, and the DCI format is 1_0.

Optionally, in embodiments of the present invention, when the first information field is the PUCCH resource indication information field, the first information field, when indicating the feedback sequence feedback, indicates the PUCCH resource used to send the feedback sequence.

Optionally, in embodiments of the present invention, the transmission parameter includes at least one of the following:

the feedback time unit used to send the feedback sequence, the PUCCH resource used to send the feedback sequence, the PUCCH transmit power used to send the feedback sequence, or the feedback timing used to send the feedback sequence.

Optionally, in embodiments of the present invention, the PDSCH corresponding to the feedback sequence triggered by the first information field may be at least one of the following:

a PDSCH corresponding to at least one HARQ process index supported by the terminal device;

the PDSCH received on the PDSCH corresponding to at least one HARQ process index supported by the terminal device;

a PDSCH corresponding to at least one HARQ process index group supported by the terminal device;

the PDSCH received on the PDSCH corresponding to at least one HARQ process index group supported by the terminal device;

a PDSCH included in at least one PDSCH group;

the PDSCH received on the PDSCHs included in at least one PDSCH group;

PDSCH received in a certain period of time before DCI;

PDSCH scheduled in a certain period of time before PDSCH scheduled by DCI;

the first PDSCH scheduled before the DCI, wherein the first PDSCH feedback information is not allocated with transmission resources; and

the second PDSCH scheduled before the DCI, and the second PDSCH feedback information is not sent.

It should be understood that the network device 400 may be used to implement the corresponding operations implemented by the network device in the method 200, and for simplicity, this document is not discussed in detail.

In FIG. 6 is a structural view of a communication device 500 according to an embodiment of the present invention. The communication device 500 shown in FIG. 6 includes a processor 510. The processor 510 may call a computer program from a memory device and run the program to implement the method in the embodiments of the present invention.

Optionally, as shown in FIG. 6, the communication device 500 may further comprise a storage device 520. The processor 510 may call and execute a computer program from the storage device 520 to implement the method in the embodiments of the present invention.

Memory 520 may be a separate device independent of processor 510, and may also be integrated with processor 510.

Optionally, as shown in FIG. 6, communication device 500 may further include a transceiver 530, and processor 510 may control transceiver 530 to communicate with another device, such as sending information or data to another device, or receiving information or data from another device.

The transceiver 530 may include a transmitter and a receiver. The transceiver 530 may further comprise an antenna. The number of antennas can be one or more.

Optionally, the communication device 500 may be specifically a network device according to the embodiments of the present invention, and the communication device 500 may implement the corresponding sequences of operations implemented by the network device in each method according to the embodiments of the present invention. In this document, for the sake of simplicity, detailed descriptions are omitted.

Optionally, the communication device 500 may specifically be a mobile terminal/terminal device according to the embodiments of the present invention, and the communication device 500 may implement the corresponding sequences of operations implemented by the mobile terminal/terminal device in each method according to the embodiments of the present invention. In this document, for the sake of simplicity, detailed descriptions are omitted.

In FIG. 7 is a schematic structural view of a communication device 600 according to an embodiment of the present invention. The communication device 600 shown in FIG. 7 includes a processor 610. The processor 610 can call a computer program from a memory device and run the program to implement the method in the embodiments of the present invention.

Optionally, as shown in FIG. 7, communication device 600 may further comprise a memory 620. Processor 610 may call and execute a computer program from memory 620 to implement the method in embodiments of the present invention.

Memory 620 may be a separate device independent of processor 610, and may also be integrated with processor 610.

Optionally, the communication device 600 may further comprise an input interface 630. The processor 610 may control the input interface 630 to communicate with other devices or chips; in particular, the input interface can receive information or data sent by other devices or chips.

Optionally, the communication device 600 may further comprise an output interface 640. The processor 610 may control the output interface 640 to communicate with other devices or chips; in particular, the output interface can output information or data to other devices or chips.

Optionally, the communication device may be applied to the network device according to the embodiments of the present invention, and the communication device may implement the corresponding sequences of operations implemented by the network device in each method according to the embodiments of the present invention. In this document, for the sake of simplicity, detailed descriptions are omitted.

Optionally, the communication device 600 may be applied to the mobile terminal/terminal device in the embodiments of the present invention, and the communication device 600 may implement the corresponding processes implemented by the mobile terminal/terminal device in each method according to the embodiments of the present invention. In this document, for the sake of simplicity, detailed descriptions are omitted.

It should be understood that the communication device 600 referred to in the embodiments of the present invention may be a chip, which may also be called a system-level chip, a system chip, a system-on-a-chip, or a system-on-a-chip, etc.

It should be understood that the processor in an embodiment of the present invention may be an integrated circuit chip and has signal processing capability. During implementation, each step of an embodiment of the method may be performed by a hardware integrated logic circuit in a processor or by an instruction in the form of software. The processor may be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete logic element or a transistorized logic device, and a discrete hardware component. Each method, step, and flowchart disclosed in the embodiments of the present invention may be implemented or executed. The general purpose processor may be a microprocessor, or the processor may also be any conventional processor, or the like. combinations of hardware and software modules in the decoding processor. The software module may be located on a storage medium well known in the art, such as RAM, flash memory, ROM, PROM, or EEPROM, and a register. The storage medium is located in the storage device and the processor reads the information in the storage device and performs the steps of the methods in conjunction with the hardware.

It should be understood that the storage device in an embodiment of the present invention may be a volatile storage device or a non-volatile storage device, or may contain both volatile and non-volatile storage devices. The non-volatile storage device may be ROM, PROM, Erasable PROM (EPROM), EEPROM, or flash memory. The volatile memory may be RAM and is used as an external high speed cache. As an illustrative example, and not limitation, it is described that RAM in various forms can be used, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), advanced SDRAM (ESDRAM), synchronous channel DRAM (SLDRAM), and direct resident access bus RAM (DR RAM). It should be noted that the memory of the system and method described in the present invention is intended to include, but is not limited to, these and any other suitable types of memory.

It should be understood that the above storage devices are described as an illustrative example and not limitation; for example, memory devices in embodiments of the present invention may also be static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), DRAM with synchronous channel (SLDRAM) and direct resident access bus RAM (DR RAM). That is, the storage devices in the embodiments of the present invention are intended to include, but are not limited to, storage devices of these and any other suitable types.

Embodiments of the present invention also provide a computer-readable storage medium that is configured to store a computer program.

Optionally, a computer-readable storage medium may be used in a network device in the embodiments of the present invention, and a computer program allows the computer to execute the respective streams implemented by the network device in each method according to the embodiments of the present invention. In this document, for the sake of simplicity, detailed descriptions are omitted.

Optionally, a computer-readable storage medium may be used in the mobile terminal/terminal device in the embodiments of the present invention, and the computer program causes the computer to execute the corresponding sequences of operations implemented by the mobile terminal/terminal device in each method according to the embodiments of the present invention. In this document, for the sake of simplicity, detailed descriptions are omitted.

Embodiments of the present invention also provide a computer program product that contains a computer program instruction.

Optionally, the computer program product may be applied to the network device in the embodiments of the present invention, and the computer program instruction allows the computer to execute the respective flows implemented by the network device in each method according to the embodiments of the present invention. In this document, for the sake of simplicity, detailed descriptions are omitted.

Optionally, the computer program product may be applied to the mobile terminal/terminal device in the embodiments of the present invention, and the computer program instruction causes the computer to execute the corresponding sequences of operations implemented by the mobile terminal/terminal device in each method according to the embodiments of the present invention. In this document, for the sake of simplicity, detailed descriptions are omitted.

Embodiments of the present invention also provide a computer program.

Optionally, a computer program may be applied to the network device in the embodiments of the present invention, and the computer program runs on the computer to allow the computer to execute the respective flows implemented by the network device in each method according to the embodiments of the present invention. In this document, for the sake of simplicity, detailed descriptions are omitted.

Optionally, the computer program may be applied to the mobile terminal/terminal device in the embodiments of the present invention, and the computer program runs on the computer to perform the corresponding sequences of operations implemented by the mobile terminal/terminal device in each method according to the embodiments of the present invention. In this document, for the sake of simplicity, detailed descriptions are omitted.

Those skilled in the art will appreciate that the blocks and steps of the algorithms of each example described in conjunction with the embodiments disclosed herein may be implemented in electronic hardware or a combination of computer software and electronic hardware. Depending on specific applications and design constraints of technical solutions, these functions are performed either in hardware or in software. Skilled artisans may implement the described functions for each particular application using different methods, but such an implementation will be within the scope of the present invention.

Those skilled in the art may clearly understand that the specific processes of operation of the system, apparatus, and unit described above may refer to corresponding processes in the method embodiment and will not be detailed herein for convenience and brevity.

It should be understood that in some embodiments provided in the present invention, the disclosed system, apparatus, and method may be implemented in other ways. For example, the embodiment of the device described above is only schematic, and for example, block separation is only a separation of logical functions, and other separation methods can be applied in practical implementation. For example, several blocks or components may be combined or integrated into another system, or certain features may be omitted or not implemented. In addition, the connection, or direct connection, or communication connection between each of the shown or discussed components may be an indirect connection or communication connection implemented through some interfaces of the device or blocks, and may be electrical and mechanical or take other forms.

Blocks described as separate parts may or may not be physically separated, and parts shown as blocks may or may not be physical blocks, namely, they may be located in the same place or may be distributed among several network units. . Some or all of the blocks may be selected to achieve the purpose of the solutions of the embodiments according to practical requirements.

In addition, each functional block in each embodiment of the present invention can be integrated into a processing block, each block can also physically exist separately, and two or more than two blocks can also be integrated into one block.

When implemented as a functional block of software and sold or used as a stand-alone product, the function may also be stored on a computer-readable storage medium. Based on such an understanding, the technical solutions of the present invention to a significant extent, or a part that contributes to the prior art, or a part of the technical solutions can be implemented by a software product, and a computer program product is stored on a storage medium, including a set of instructions configured to be executed by a computer program. device (which may be a personal computer, server, network equipment, or the like) of all or part of the method steps in each embodiment of the present invention. The above-mentioned storage medium includes: various media that can store program codes such as U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk.

The above is only a specific way of implementing the present invention, and is not intended to limit the scope of legal protection of the present invention. Any changes or substitutions obvious to those skilled in the art, within the technical scope disclosed in the present invention, are within the scope of the present invention. Therefore, the scope of legal protection of the present invention will depend on the scope of legal protection of the claims.

Claims (29)

1. The method of communication, including: the terminal device receiving downlink control information (DCI), wherein the DCI comprises a first information field and is used for scheduling at least one physical downlink shared channel (PDSCH); determining, by the terminal device, a transmission parameter for sending the feedback codebook over the physical channel based on whether the first information field is used to trigger the feedback codebook; and sending by the terminal device a feedback codebook over a physical channel by using a transmission parameter, characterized in that if the first information field is used to start the feedback codebook, the transmission parameter is provided from the first set of transmission parameters; and if the first information field is not used to start the feedback codebook, the transmission parameter is provided from the second set of transmission parameters; and wherein the first set of transmission parameters is different from the second set of transmission parameters. 2. The method of claim. 1, characterized in that the first set of transmission parameters is a subset of the second set of transmission parameters. 3. The method according to claim 1 or 2, characterized in that the transmission parameter is provided from the first transmission parameter set or the second transmission parameter set based on the second information field contained in the DCI. 4. The method according to any one of paragraphs. 1-3, characterized in that each of the first set of transmission parameters and the second set of transmission parameters is a set of hybrid automatic repeat request (HARQ) feedback timing. 5. The method according to any one of paragraphs. 1-4, characterized in that the transmission parameter contains the feedback timing used to send the feedback codebook. 6. The method according to any one of paragraphs. 1-5, characterized in that at least one PDSCH corresponding to the feedback codebook triggered by the first information field is at least one PDSCH corresponding to at least one HARQ process index supported by the terminal device. 7. The method according to p. 1, characterized in that the second set of transmission parameters comprises a first element representing a feedback timing that is not temporarily determined; and wherein the first set of transmission parameters contains elements other than the first element contained in the second set of transmission parameters. 8. Communication method, including: sending downlink control information (DCI) by the network device, wherein the DCI comprises a first information field and is used for scheduling at least one physical downlink shared channel (PDSCH); determining, by the network device, a transmission parameter for receiving the feedback codebook over the physical channel based on whether the first information field is used to trigger the feedback codebook; and obtaining by the network device by using the transmission parameter of the feedback codebook on the physical channel; characterized in that if the first information field is used to start the feedback codebook, the transmission parameter is provided from the first set of transmission parameters; and if the first information field is not used to start the feedback codebook, the transmission parameter is provided from the second set of transmission parameters; and wherein the first set of transmission parameters is different from the second set of transmission parameters. 9. The method of claim. 8, wherein the first set of transmission parameters is a subset of the second set of transmission parameters. 10. The method according to claim 8 or 9, wherein the transmission parameter is a transmission parameter corresponding to a second information field contained in the DCI in the first transmission parameter set or in the second transmission parameter set. 11. The method according to any one of paragraphs. 8-10, characterized in that each of the first set of transmission parameters and the second set of transmission parameters is a set of hybrid automatic repeat request (HARQ) feedback timing. 12. The method according to any one of paragraphs. 8-11, characterized in that the transmission parameter contains the feedback timing used to send the feedback codebook; and wherein at least one PDSCH corresponding to the feedback codebook triggered by the first information field is at least one PDSCH corresponding to at least one HARQ process index supported by the terminal device. 13. A communication terminal device, comprising: a processor configured to call a computer program from a storage device and run a computer program to enable the terminal device to execute the method according to any one of paragraphs. 1-7. 14. A network communication device, comprising: a processor configured to call a computer program from a storage device and run a computer program to enable the network device to execute the method according to any one of paragraphs. 8-12.

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