CN116471680A

CN116471680A - HARQ-ACK information feedback method and device

Info

Publication number: CN116471680A
Application number: CN202210028310.9A
Authority: CN
Inventors: 李军; 焦淑蓉
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-01-11
Filing date: 2022-01-11
Publication date: 2023-07-21
Also published as: WO2023134619A1

Abstract

The embodiment of the application provides a HARQ-ACK information feedback method and device. The network device activates semi-static scheduling and simultaneously is also used for dynamically scheduling downlink data, and the timing offset value from the PDSCH indicated by the DCI to the HARQ feedback can simultaneously indicate the time domain position of the PUCCH carrying the HARQ-ACK information corresponding to the semi-static scheduling data and the time domain position of the PUCCH carrying the HARQ-ACK information corresponding to the downlink data. By the scheme, the time domain position of the PUCCH carrying the HARQ-ACK information corresponding to the semi-static scheduling data, which is determined by the terminal equipment, can be enabled to be effective, so that the HARQ-ACK information corresponding to the semi-static scheduling data can be fed back in time, and the transmission performance of the semi-static scheduling data is guaranteed.

Description

HARQ-ACK information feedback method and device

Technical Field

The embodiment of the application relates to the field of wireless communication, and more particularly relates to a HARQ-ACK information feedback method and device.

Background

Typically, the physical uplink control channel (physical uplink control channel, PUCCH) carrying uplink control information is transmitted by default on a fixed cell. When the time domain position of the PUCCH overlaps with the downlink symbol, the PUCCH can only be delayed until the next slot (slot) is transmitted, which increases the transmission delay of the uplink control information.

To address this issue, the release 17 (R17) Rel-17 standard of the third generation partnership project (3rd generation partnership project,3GPP) introduced a PUCCH cell switching (cell switching) feature. In this feature, a 1-bit PUCCH cell indication field may be included in the downlink control information (downlink control information, DCI), which is used to indicate whether the PUCCH carrying hybrid automatic repeat request acknowledgement (hybrid automatic repeat request acknowledgment, HARQ-ACK) information is on a primary cell (PCell) or a secondary cell (SCell), this SCell also being referred to as a PUCCH handover secondary cell. When the DCI indicates that the PUCCH is on the PCell, determining the value of K1 according to the K1 set of the PCell; when the PUCCH is indicated on the SCell, then the value of K1 is determined from the K1 set of the SCell.

If the DCI activates semi-persistent scheduling (semi-persistent scheduling, SPS) while dynamically scheduling downlink data, the terminal device needs to feed back HARQ-ACK information not only for the dynamically scheduled downlink data, but also for the semi-persistent scheduling physical downlink shared channel (physical downlink shared channel, PDSCH). Also, due to the introduction of PUCCH cell switching characteristics, the PUCCH carrying HARQ-ACK information of the dynamically scheduled downlink data may not be on the same cell as the PUCCH carrying HARQ-ACK information of the SPS PDSCH, and thus the time domain position of the PUCCH carrying HARQ-ACK information of the SPS PDSCH determined by the User Equipment (UE) may be invalid, thereby affecting the performance of data transmission.

Disclosure of Invention

The embodiment of the application provides a HARQ-ACK information feedback method and device, which are used for solving the problem that after the introduction of the PUCCH cell switching characteristic, the time domain position of a PUCCH carrying the HARQ-ACK information of a semi-statically scheduled PDSCH determined by UE is invalid.

In a first aspect, a HARQ-ACK information feedback method is provided, which may be performed by a terminal device or may also be performed by a component of the terminal device. The method comprises the following steps: the terminal equipment receives downlink control information from the network equipment, wherein the downlink control information is used for scheduling downlink data and comprises first indication information, the first indication information indicates the terminal equipment to send first HARQ-ACK information on a first cell through a first PUCCH, the first HARQ-ACK information is HARQ-ACK information corresponding to the downlink data, the downlink control information is also used for activating semi-static scheduling, the downlink control information also comprises second indication information, the second indication information indicates a first value, the first value is a value in a first set, and the second set comprises the first value; the terminal equipment determines the time domain position of the second PUCCH according to the first value; and the terminal equipment sends second HARQ-ACK information on a second cell through a second PUCCH. The second HARQ-ACK information is HARQ-ACK information corresponding to semi-statically scheduled data. The value in the first set indicates a slot offset value between a PDSCH carrying downlink data and a first PUCCH carrying first HARQ-ACK information; the values in the second set indicate slot offset values between PDSCH carrying semi-statically scheduled data and a second PUCCH carrying second HARQ-ACK information.

In a possible implementation, the first set belongs to a first cell and the second set belongs to a second cell. It is also understood that the first set is the K1 set of the first cell and the second set is the K1 set of the second cell.

In a possible implementation manner, the first cell may be a PUCCH handover secondary cell, and the second cell may be a primary cell or a PUCCH secondary cell.

Based on the above technical solution, the DCI sent by the network device to the terminal device is used for scheduling downlink data while activating semi-persistent scheduling, and the timing offset value from PDSCH indicated by the DCI to HARQ feedback may indicate the time domain position of PUCCH carrying HARQ-ACK corresponding to the semi-persistent scheduling data and the time domain position of PUCCH carrying HARQ-ACK corresponding to the downlink data at the same time. And the timing offset value belongs to both the K1 set in the first cell and the K1 set in the second cell. By the scheme, the time domain position of the PUCCH carrying the HARQ-ACK information corresponding to the semi-static scheduling data, which is determined by the terminal equipment, can be enabled to be effective, so that the HARQ-ACK information corresponding to the semi-static scheduling data can be fed back in time, and the transmission performance of the semi-static scheduling data is guaranteed.

The above solution may also be understood that the first value in the first set indicated by the second indication information that the terminal device does not desire to receive is not included in the second set. Alternatively, it may be understood that the slot offset value between the PDSCH indicated by DCI in which the terminal device does not desire to activate SPS and the PUCCH carrying HARQ-ACK information of the PDSCH is not a value in the intersection of the first set and the second set.

In one possible implementation, the terminal device may determine a time domain position of the first PUCCH according to the first value; and the terminal device may transmit the first HARQ-ACK information over the first PUCCH on the first cell.

Based on the above technical scheme, if the second cell is the downlink symbol at this time, the first PUCCH may be sent on the first cell, so that the delay of HARQ-ACK transmission of the downlink data may be reduced.

In a second aspect, a HARQ-ACK information feedback method is provided, which may be performed by a terminal device or may also be performed by a component part of the terminal device. The method comprises the following steps: the terminal equipment receives downlink control information from the network equipment, wherein the downlink control information is used for scheduling downlink data, the downlink control information comprises first indication information, the first indication information indicates the terminal equipment to send first HARQ-ACK information on a first cell through a first PUCCH, and the first HARQ-ACK information is HARQ-ACK information corresponding to the downlink data; the downlink control information is further used to activate semi-persistent scheduling, and the downlink control information further includes third indication information indicating values in the first set and values in the second set. The terminal device may determine a time domain position of the first PUCCH and a time domain position of the second PUCCH according to the third indication information. The terminal equipment sends first HARQ-ACK information through a first PUCCH on a first cell; and the terminal equipment sends second HARQ-ACK information on a second cell through a second PUCCH. The second HARQ-ACK information is HARQ-ACK information corresponding to semi-statically scheduled data, and a value in the first set indicates a slot offset value between a PDSCH carrying the downlink data and the first PUCCH carrying the first HARQ-ACK information; the values in the second set indicate slot offset values between a PDSCH carrying the semi-statically scheduled data and a second PUCCH carrying second HARQ-ACK information.

In one possible implementation manner, for the downlink data, the terminal device may determine a time domain position of the first PUCCH according to the third indication information and the first set.

In one possible implementation, for semi-statically scheduled data, the terminal device determines a time domain position of the second PUCCH according to the third indication information and the second set.

In other words, the PDSCH-to-HARQ-ACK feedback timing indication field in the downlink control information in this method indicates two K1 values, one being the K1 value in the K1 set (i.e., the first set) in the first cell and the other being the K1 value in the K1 set (i.e., the second set) in the second cell. Thus, the third indication information is made to indicate a valid value in the second set as well. It may also be understood that in the above method, the third indication information that the terminal device does not desire to receive has an indication exceeding the value contained in the second set.

Based on the above scheme, in this embodiment, the DCI sent by the network device to the terminal device is used to dynamically schedule downlink data while the semi-static scheduling is activated, and the timing offset value from PDSCH indicated by the DCI to HARQ feedback may simultaneously indicate, in the K1 set of the second cell, the time domain position of PUCCH carrying HARQ-ACK information corresponding to the semi-static scheduled data, and indicate, in the K1 set of the first cell, the time domain position of PUCCH carrying HARQ-ACK information corresponding to the downlink data. By the scheme, the time domain position of the PUCCH carrying the HARQ-ACK information corresponding to the semi-static scheduling data, which is determined by the terminal equipment, can be enabled to be effective, so that the HARQ-ACK information corresponding to the semi-static scheduling data can be fed back in time, and the transmission performance of the semi-static scheduling data is guaranteed.

In a third aspect, a HARQ-ACK information feedback method is provided, which may be performed by a terminal device or may also be performed by a component part of the terminal device. The method comprises the following steps: the terminal device receives configuration information from the network device, wherein the configuration information is used for configuring a third PUCCH carrying third information for the second cell, and the third PUCCH and a physical uplink shared channel (physical uplink shared channel, PUSCH) are overlapped in a time domain. The terminal equipment receives downlink control information from the network equipment, the downlink control information is used for scheduling downlink data, the downlink control information comprises first indication information, the first indication information indicates the terminal equipment to send first HARQ-ACK information on a first cell through a first PUCCH, and the first HARQ-ACK information is HARQ-ACK information corresponding to the downlink data. The terminal device discards the third PUCCH. In this application, the third information may include one or more of the following: HARQ-ACK information of semi-statically scheduled data, channel state information, scheduling request information.

Based on the above technical solution, in the present application, if the third PUCCH carrying the third information overlaps the PUSCH in the time domain in the scenario where PUCCHs are to be transmitted on two cells, the terminal device may discard the third PUCCH, so that the terminal device does not need to multiplex control channels on two cells (may also be understood as "cross-cell") and then multiplex the control channels into the corresponding PUSCH, and at the same time, the number of PUSCHs carrying uplink control information may be reduced, and the multiplexing complexity of the terminal device may be simplified.

In one possible implementation, when the time domain position of the physical downlink control channel (physical downlink control channel, PDCCH) carrying the DCI is before the time domain position of the PUSCH and the time domain position interval between the PDCCH and the PUSCH is greater than or equal to the first duration, the terminal device may discard the third PUCCH.

In another possible implementation manner, when the time domain position of the PDCCH carrying the DCI is before the time domain position of the third PUCCH and the time domain position of the PDCCH and the third PUCCH are spaced by greater than or equal to the first duration, the terminal device may discard the third PUCCH.

It may also be understood that whether the terminal device receives the downlink control information successfully affects whether the terminal device discards the third PUCCH on the second cell. Assuming that the terminal device needs three symbols (an example of the first duration) to parse the DCI, the terminal device needs to parse the DCI successfully before transmitting the PUSCH or before transmitting the third PUCCH.

Based on the above technical solution, in the present application, by providing the first duration, the network device may determine that the terminal device discards the third PUCCH, that is, the network device may also determine that the third information is not multiplexed on the PUSCH. Therefore, the network equipment does not need blind detection when detecting the PUSCH, and the detection complexity of the network equipment is reduced. Alternatively, it may be understood that if the first duration is not provided, the network device cannot determine whether the terminal device discards the third PUCCH, and the network device cannot determine whether the third information is multiplexed on the PUSCH. Therefore, when the network device detects the PUSCH, it is necessary to blindly detect whether the PUSCH is multiplexed with the third information, and the detection complexity is high.

In one possible implementation, the time domain positions of the first PUCCH and PUSCH do not overlap. At this time, the terminal device may transmit the first HARQ-ACK information through the first PUCCH. It is also understood that the first PUCCH does not need to be multiplexed with PUSCH.

In one possible implementation, the first PUCCH overlaps with the time domain position of PUSCH. At this time, the terminal device may transmit the first HARQ-ACK information through the PUSCH. It can also be understood that the first PUCCH is multiplexed with PUSCH.

In one possible implementation, the third PUCCH overlaps with the downlink symbol configured by the network device in the time domain.

In one possible implementation, the slot in which the third PUCCH is located overlaps with the slot in which the first PUCCH is located in a time domain.

In a fourth aspect, a method for feeding back HARQ-ACK information is provided, where the method is a method on the network side corresponding to the first aspect, and may be performed by a network device, or may also be performed by a component of the network device. The beneficial effects achieved by the method can be referred to the beneficial effects achieved by the HARQ-ACK information feedback method of the first aspect.

The method comprises the following steps: the network equipment sends downlink control information to the terminal equipment, wherein the downlink control information is used for scheduling downlink data, the downlink control information comprises first indication information, the first indication information indicates the terminal equipment to send first HARQ-ACK information on a first cell through a first PUCCH, and the first HARQ-ACK information is HARQ-ACK information corresponding to the downlink data; the downlink control information is further used for activating semi-static scheduling, the downlink control information further comprises second indication information, the second indication information indicates a first value, the first value is a value in a first set, and the second set comprises the first value. And the network equipment receives second HARQ-ACK information through a second PUCCH on a second cell, wherein the number of time slots of the interval between the time domain position of the second PUCCH and the PDSCH carrying the semi-statically scheduled data is a first value. The second HARQ-ACK information is HARQ-ACK information corresponding to semi-statically scheduled data. The value in the first set indicates a slot offset value between a PDSCH carrying downlink data and a first PUCCH carrying first HARQ-ACK information; the values in the second set indicate slot offset values between PDSCH carrying semi-statically scheduled data and a second PUCCH carrying second HARQ-ACK information.

In one implementation, the network device receives, on a first cell, first HARQ-ACK information through a first PUCCH, where a number of slots spaced between a time domain position of the first PUCCH and a PDSCH carrying downlink data is a first value.

In a fifth aspect, a HARQ-ACK information feedback method is provided, where the method is a network-side method corresponding to the second aspect, and may be performed by a network device, or may also be performed by a component of the network device. The beneficial effects achieved by the method can be referred to the beneficial effects achieved by the HARQ-ACK information feedback method of the second aspect.

The method comprises the following steps: the network equipment sends downlink control information to the terminal equipment, wherein the downlink control information is used for scheduling downlink data, the downlink control information comprises first indication information, the first indication information indicates the terminal equipment to send first HARQ-ACK information on a first cell through a first PUCCH, and the first HARQ-ACK information is HARQ-ACK information corresponding to the downlink data; the downlink control information is further used for activating semi-persistent scheduling, and the downlink control information further comprises third indication information, wherein the third indication information indicates values in the first set and values in the second set. The network device receives first HARQ-ACK information through a first PUCCH on a first cell, wherein the number of time slots of an interval between the time domain position of the first PUCCH and a PDSCH carrying downlink data is a value indicated by third indication information. And the network equipment receives second HARQ-ACK information through a second PUCCH on a second cell, wherein the number of time slots of the interval between the time domain position of the second PUCCH and the PDSCH carrying semi-statically scheduled data is the value indicated by the third indication information. And the HARQ-ACK information corresponding to the data semi-statically scheduled by the second HARQ-ACK information. The value in the first set indicates a slot offset value between a PDSCH carrying downlink data and a first PUCCH carrying the first HARQ-ACK information; the values in the second set indicate slot offset values between PDSCH carrying semi-statically scheduled data and a second PUCCH carrying second HARQ-ACK information.

In one possible implementation, for downlink data scheduled by DCI, a slot offset value between a time domain position of the first PUCCH and a PDSCH carrying the downlink data scheduled by DCI is a value in the first set indicated by the third indication information.

In one possible implementation, for semi-statically scheduled data, a slot offset value between a time domain position of the second PUCCH and a PDSCH carrying the semi-statically scheduled data is a value in the second set indicated by the third indication information.

In a sixth aspect, a communication method is provided, which is a method on the network side corresponding to the third aspect, and may be executed by a network device, or may be executed by a component of the network device. The beneficial effects achieved by the method can be referred to the beneficial effects achieved by the HARQ-ACK information feedback method of the third aspect.

The method comprises the following steps: the network device sends configuration information to the terminal device, wherein the configuration information is used for configuring a third PUCCH carrying third information for the second cell, and the third PUCCH and the PUSCH are overlapped in the time domain. The network equipment sends downlink control information to the terminal equipment, the downlink control information is used for scheduling downlink data, the downlink control information comprises first indication information, the first indication information indicates the terminal equipment to send first HARQ-ACK information on a first cell through a first PUCCH, and the first HARQ-ACK information is HARQ-ACK information corresponding to the downlink data. The terminal device does not receive the third PUCCH on the second cell. The third information may include one or more of the following: HARQ-ACK information of semi-statically scheduled data, channel state information, scheduling request information.

In one possible implementation, when the time domain position of the PDCCH carrying the downlink control information is before the time domain position of the PUSCH and the time domain position interval between the PDCCH and the PUSCH is greater than or equal to the first duration, the network device does not receive the third PUCCH.

In another possible implementation manner, the terminal device may discard the third PUCCH when the time domain position of the PDCCH carrying the physical downlink control information is before the time domain position of the third PUCCH and the time domain position of the PDCCH is spaced from the third PUCCH by greater than or equal to the first duration.

In one possible implementation, the time domain positions of the first PUCCH and PUSCH do not overlap. At this time, the network device may receive the first HARQ-ACK information through the first PUCCH. It is also understood that the first PUCCH does not need to be multiplexed with PUSCH.

In one possible implementation, the first PUCCH overlaps with the time domain position of PUSCH. At this time, the network device may receive the first HARQ-ACK information through the PUSCH. It can also be understood that the first PUCCH is multiplexed with PUSCH.

In a seventh aspect, a communication device is provided for performing the method in any of the possible implementations of the first to third aspects. In particular, the apparatus may comprise means and/or modules, such as a transceiver unit and/or a processing unit, for performing the method in any of the possible implementations of the first to third aspects.

In an eighth aspect, a communication device is provided for performing the method of any of the possible implementations of the fourth to sixth aspects. In particular, the apparatus may comprise means and/or modules, such as a transceiver unit and/or a processing unit, for performing the method in any of the possible implementations of the fourth aspect to the sixth aspect.

In a possible implementation manner of the seventh aspect or the eighth aspect, the communication unit may be a transceiver, or an input/output interface; the processing unit may be at least one processor, or processing circuit. Alternatively, the transceiver may be a transceiver circuit. Alternatively, the input/output interface may be an input/output circuit.

In a ninth aspect, there is provided a communication apparatus comprising: at least one processor configured to execute a computer program or instructions stored in a memory to perform a method according to any one of the possible implementations of the first to third aspects. Optionally, the apparatus further comprises a memory for storing a computer program or instructions.

In one implementation, the apparatus is a terminal device.

In another implementation, the apparatus is a chip, a system-on-chip or a circuit for a terminal device.

In a tenth aspect, there is provided a communication apparatus comprising: at least one processor configured to execute a computer program or instructions stored in a memory to perform a method according to any one of the possible implementation manners of the fourth to sixth aspects. Optionally, the apparatus further comprises a memory for storing a computer program or instructions.

In one implementation, the apparatus is a network device.

In another implementation, the apparatus is a chip, a system-on-chip, or a circuit for a network device.

In an eleventh aspect, a processing device is provided that includes a processor and a memory. The processor is configured to read instructions stored in the memory and is configured to receive signals via the transceiver and to transmit signals via the transmitter to perform the method of any one of the possible implementations of the first to sixth aspects.

In a twelfth aspect, a computer readable storage medium is provided, the computer readable storage medium storing program code for execution by a device, the program code comprising instructions for performing the method of any one of the possible implementations of the first to sixth aspects.

In a thirteenth aspect, there is provided a computer program product comprising instructions which, when run on a communication device, cause the communication device to perform the method of any one of the possible implementations of the first to sixth aspects described above.

A fourteenth aspect provides a communication system comprising a terminal device for performing the method of any of the implementations of the first aspect described above and a network device for performing the method of any of the implementations of the fourth aspect described above; or, the terminal device is configured to perform the method of any implementation manner of the second aspect, and the network device is configured to perform the method of any implementation manner of the fifth aspect; the terminal device is configured to perform the method according to any implementation manner of the third aspect, and the network device is configured to perform the method according to any implementation manner of the sixth aspect.

Drawings

Fig. 1 is a schematic architecture diagram of a mobile communication system applied in an embodiment of the present application;

fig. 2 is a schematic diagram of determining a time domain position of a PUCCH of HARQ-ACK of a PDSCH carrying SPS provided in the present application;

FIG. 3 is a schematic diagram of a determined type1 codebook provided herein;

fig. 4 is a schematic diagram of PUCCH cell switching provided herein;

fig. 5 is a schematic diagram of a time domain position of a PUCCH of HARQ-ACK of a PDSCH carrying SPS under PUCCH cell switching provided in the present application;

fig. 6 is a schematic flowchart of a HARQ-ACK information feedback method provided in the present application;

fig. 7 is a schematic diagram of a time slot offset between a time domain position of a PUCCH and a PDSCH carrying downlink data at different subcarrier intervals provided in the present application;

fig. 8 is another schematic diagram of a time domain position of a PUCCH of HARQ-ACK of a PDSCH carrying SPS under PUCCH cell switching provided in the present application;

fig. 9 is a further schematic diagram of a time domain position of a PUCCH of HARQ-ACK of a PDSCH carrying SPS under PUCCH cell switching provided in the present application;

fig. 10 is a schematic diagram of filling HARQ-ACK bit positions corresponding to PDSCH of SPS with "NACK" in a type1 codebook of PUCCH-scell provided in the present application;

fig. 11 is a schematic flowchart of a HARQ-ACK information feedback method provided in the present application;

fig. 12 is a schematic diagram of discarding a third PUCCH provided herein;

FIG. 13 is a schematic block diagram of a communication device provided herein;

fig. 14 is another schematic block diagram of a communication device provided herein.

Detailed Description

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

Fig. 1 is a schematic architecture diagram of a communication system 1000 to which embodiments of the present application apply. As shown in fig. 1, the communication system comprises a radio access network 100 and a core network 200, and optionally the communication system 1000 may further comprise the internet 300. The radio access network 100 may include at least one radio access network device (e.g., 110a and 110b in fig. 1) and may also include at least one terminal (e.g., 120a-120j in fig. 1). The terminal is connected with the wireless access network equipment in a wireless mode, and the wireless access network equipment is connected with the core network in a wireless or wired mode. The core network device and the radio access network device may be separate physical devices, or may integrate the functions of the core network device and the logic functions of the radio access network device on the same physical device, or may integrate the functions of part of the core network device and part of the radio access network device on one physical device. The terminals and the radio access network device may be connected to each other by wired or wireless means. Fig. 1 is only a schematic diagram, and other network devices may be further included in the communication system, for example, a wireless relay device and a wireless backhaul device may also be included, which are not shown in fig. 1.

The radio access network device (an example of the network device) may be a base station (base station), an evolved NodeB (eNodeB), a transmission reception point (transmission reception point, TRP), a next generation NodeB (gNB) in a fifth generation (5th generation,5G) mobile communication system, a next generation base station in a sixth generation (6th generation,6G) mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system, or the like; the present invention may also be a module or unit that performs a function of a base station part, for example, a Central Unit (CU) or a Distributed Unit (DU). The CU can complete the functions of a radio resource control protocol and a packet data convergence layer protocol of the base station and can also complete the functions of a service data adaptation protocol (service data adaptation protocol, SDAP); the DU performs the functions of the radio link control layer and the medium access control layer of the base station, and may also perform the functions of a part of the physical layer or all of the physical layer, and for the specific description of each protocol layer, reference may be made to the relevant technical specifications of 3 GPP. The radio access network device may be a macro base station (e.g. 110a in fig. 1), a micro base station or an indoor station (e.g. 110b in fig. 1), a relay node or a donor node, etc. The embodiment of the application does not limit the specific technology and the specific equipment form adopted by the wireless access network equipment. For convenience of description, a base station will be described below as an example of a radio access network device.

A terminal may also be called a terminal device, UE, mobile station, mobile terminal, etc. The terminal may be widely applied to various scenes, for example, device-to-device (D2D), vehicle-to-device (vehicle to everything, V2X) communication, machine-type communication (MTC), internet of things (internet of things, IOT), virtual reality, augmented reality, industrial control, autopilot, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, and the like. The terminal can be a mobile phone, a tablet personal computer, a computer with a wireless receiving and transmitting function, a wearable device, a vehicle, an airplane, a ship, a robot, a mechanical arm, intelligent household equipment and the like. The embodiment of the application does not limit the specific technology and the specific equipment form adopted by the terminal.

The base station and the terminal may be fixed in position or movable. Base stations and terminals may be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; the device can be deployed on the water surface; but also on aircraft, balloons and satellites. The application scenes of the base station and the terminal are not limited in the embodiment of the application.

The roles of base station and terminal may be relative, e.g., helicopter or drone 120i in fig. 1 may be configured as a mobile base station, terminal 120i being the base station for those terminals 120j that access radio access network 100 through 120 i; but for base station 110a 120i is a terminal, i.e., communication between 110a and 120i is via a wireless air interface protocol. Of course, communication between 110a and 120i may be performed via an interface protocol between base stations, and in this case, 120i is also a base station with respect to 110 a. Thus, both the base station and the terminal may be collectively referred to as a communication device, 110a and 110b in fig. 1 may be referred to as a communication device having base station functionality, and 120a-120j in fig. 1 may be referred to as a communication device having terminal functionality.

Communication can be carried out between the base station and the terminal, between the base station and between the terminal and the terminal through the authorized spectrum, communication can be carried out through the unlicensed spectrum, and communication can also be carried out through the authorized spectrum and the unlicensed spectrum at the same time; communication can be performed through a frequency spectrum of 6 gigahertz (GHz) or less, communication can be performed through a frequency spectrum of 6GHz or more, and communication can be performed using a frequency spectrum of 6GHz or less and a frequency spectrum of 6GHz or more simultaneously. The embodiments of the present application do not limit the spectrum resources used for wireless communications.

In the embodiments of the present application, the functions of the base station may be performed by a module (such as a chip) in the base station, or may be performed by a control subsystem including the functions of the base station. The control subsystem comprising the base station function can be a control center in the application scenarios of smart power grids, industrial control, intelligent transportation, smart cities and the like. The functions of the terminal may be performed by a module (e.g., a chip or a modem) in the terminal, or by a device including the functions of the terminal.

In the embodiments of the present application, the time domain symbols may be orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbols or discrete fourier transform spread OFDM (Discrete Fourier Transform-spread-OFDM, DFT-s-OFDM) symbols. Symbols in embodiments of the present application all refer to time domain symbols, unless otherwise specified.

In the application, a base station sends a downlink signal or downlink information to a terminal, and the downlink information is borne on a downlink channel; the terminal sends an uplink signal or uplink information to the base station, and the uplink information is carried on an uplink channel. In order for a terminal to communicate with a base station, it is necessary to establish a radio connection with a cell controlled by the base station. The cell with which the terminal has established a radio connection is called the serving cell of the terminal. The terminal may also be interfered by signals from neighboring cells when communicating with the serving cell.

It should be understood that, in the following embodiments of the present application, PDSCH, PDCCH, PUCCH and PUSCH are merely examples of downlink data channels, downlink control channels, uplink control channels, and uplink data channels, respectively, and that in different systems and different scenarios, the data channels and the control channels may have different names, and the embodiments of the present application are not limited thereto.

In order to facilitate understanding of the technical solutions of the present application, the following description will be given for the technical terms related to the present application.

Primary cell (PCell): the primary cell is a cell operating on a primary frequency (primary frequency). The terminal device initiates an initial connection establishment procedure or a connection re-establishment procedure on the PCell. PCell may also be specified during handover.

Secondary cell (SCell): for terminal devices configured with carrier aggregation (carrier aggregation, CA), the secondary cell is a cell that provides additional radio resources in addition to the primary cell.

The network device (e.g., the radio access network device described above) may instruct activation of the SCell and deactivation of the SCell by signaling. Wherein, activating the SCell indicates that the terminal device can perform data transmission on the SCell configured by the network device; deactivating an SCell indicates that the terminal device is no longer able to transmit data on the SCell.

PUCCH secondary cell (PUCCH SCell): the secondary cell of the PUCCH is configured. The PUCCH may be transmitted on a certain cell (e.g., PCell or SCell) only if PUCCH parameters are configured on that cell.

PUCCH group (PUCCH group): the HARQ-ACKs corresponding to PDSCH on each cell in one cell group may form PUCCH groups on cells transmitted on the same cell. The PUCCH group may include a primary PUCCH group (primary PUCCH group) in which uplink control information such as HARQ-ACK may be transmitted on the PCell and a secondary PUCCH group (secondary PUCCH group) in which uplink control information such as HARQ-ACK may be transmitted on the PUCCH SCell.

PUCCH handover secondary cell (PUCCH switch secondary cell, PUCCH-scell): in the PUCCH group, in addition to the PUCCH hpcell or PUCCH SCell, another cell that can transmit PUCCH may be transmitted. Cell handover of PUCCH refers to that PUCCH may be transmitted on PCell or PUCCH-scsell within one PUCCH group, e.g. within a primary PUCCH group. Within the secondary PUCCH group, PUCCH may be transmitted on PUCCH SCell or PUCCH-SCell. Within the secondary PUCCH group, PUCCH SCell may be described as being replaced with PCell.

K1 set: the DCI includes a timing indicator (timing indicator) field of PDSCH to hybrid automatic repeat request (hybrid automatic repeat request, HARQ) feedback, which is used to indicate a slot offset value between the PDSCH and the PUCCH carrying HARQ-ACK feedback information corresponding to the PDSCH, where the slot offset value is also referred to as a K1 value. Candidate values for the K1 value that DCI may indicate make up the K1 set. The K1 set may be either pre-defined by the protocol or configured by RRC signaling. For example, the K1 set of DCI format 1_0 is {1,2,3,4,5,6,7,8}, and a specific K1 value may be indicated using 3 bits. For specific description of the K1 set, reference may be made to technical specifications (technical specification, TS) 38.213 in 3 GPP.

Semi-static scheduling: when the network equipment is initially scheduled, indicating the current scheduling information of the terminal equipment through the PDCCH, and when the terminal equipment is identified as SPS, storing the current scheduling information, and transmitting or receiving the data of the service on the same time-frequency resource position at fixed period intervals. By using SPS transmission, the PDCCH may be periodically used by one grant, so that PDCCH resources for scheduling indications may be effectively saved. In general, PUCCH carrying HARQ-ACK corresponding to SPS data is transmitted on PCell or PUCCH SCell.

As shown in fig. 2, the DCI on slot0 schedules one PDSCH, which is also in slot 0. Assuming that K1 is equal to 1, the PUCCH carrying HARQ-ACK information bits is at slot 1 (slot 0+k1), which can be understood as a dynamically scheduled PUCCH, since it is also indicated by DCI. Meanwhile, DCI on slot0 may also activate SPS (in this case, the "DCI" may also be understood as "DCI activating SPS"). Once activated, the SPS has an SPS opportunity (or SPS PDSCH) at intervals (e.g., SPS periods). On the SPS occision, the network device may send a PDSCH without re-sending a DCI for the PDSCH, and then, for a time domain position of a PUCCH carrying HARQ-ACK of the SPS PDSCH, the terminal device may determine the time domain position of the PUCCH carrying HARQ-ACK by using the same K1 value. As shown in fig. 2, it is assumed that the terminal device receives PDSCH of SPS on slot 3. Since the value of K1 is 1, the terminal device determines slot 4 (slot 3+k1) of the time domain position of the PUCCH of the HARQ-ACK carrying the PDSCH of the SPS on the PCell.

HARQ-ACK codebook: fig. 2 shows a case where only 1 bit of HARQ-ACK information needs to be fed back in one slot. The terminal device needs to feed back HARQ-ACK information for the received PDSCH, no matter which cell it is on, no matter which HARQ-ACK process, i.e. tell the network device whether it is correctly receiving the PDSCH. The HARQ-ACK information bit of 0 indicates NACK and 1 indicates ACK. For example, the data may be sent to the network device through PUCCH on PCell.

When the terminal device needs to perform HARQ-ACK feedback in one slot for a plurality of DCIs and/or a plurality of PDSCHs received, the number of information bits of HARQ-ACK increases. In one slot, a plurality of HARQ-ACK information bits constitute one HARQ-ACK codebook. Each bit in the HARQ-ACK codebook indicates HARQ-ACK information of the corresponding DCI or PDSCH, respectively, which indicates whether the corresponding DCI or PDSCH is correctly received by the terminal device. The HARQ-ACK codebook can be of the following three types: type 1 codebook, type 2 codebook and type 3 codebook, the following mainly describes type 1 codebook.

As shown in fig. 3, assuming that a K1 set= {1,2} configured by a network device, a terminal device may generate a type 1 codebook according to the K1 set. For example, the dashed box in fig. 3 is the position of the candidate PDSCH (candidate PDSCH), and can be understood as a position where PDSCH transmission is possible (the candidate PDSCH may also be the SPS PDSCH). If the network device actually schedules PDSCH on the candidate PDSCH position (e.g., solid line box on B position), the terminal device performs HARQ-ACK bit feedback (which may be understood as an actual ACK or NACK) for the PDSCH; if the network device does not schedule PDSCH at candidate PDSCH locations, then NACK is padded at those candidate PDSCH locations. From the point of view of the terminal device, ACK is sent after successfully parsing PDSCH; otherwise (including parsing failed PDSCH and no DCI detected), NACK is sent.

As shown in fig. 3, assuming that one candidate PDSCH requires 1-bit HARQ-ACK feedback (specific several bits, there is a rule in the protocol, for example, whether to configure double codewords, etc., which is not related to the present application and is not described in detail), the codebook size of HARQ-ACK is 6 bits. For example, the bit order of the 6-bit HARQ-ACK codebook may be ordered by cell index, e.g., PCell is ranked first, SCell is ranked later, and then candidate PDSCH is ranked first in order of candidate PDSCH. For example, in fig. 3, there may be an order of { a, B, C, D, E, F }, i.e., 6-bit codebook of {0, X,0, Y, 0}, X corresponds to a dynamically scheduled PDSCH in a solid line frame in a B position, and Y corresponds to an SPS PDSCH in a solid line frame in a D position. For example, if the terminal device successfully parses PDSCH scheduled in the D position, but does not detect DCI scheduling PDSCH in the B position, the codebook is {0,0,0,1,0,0}; for another example, if the terminal device successfully parses both the dynamically scheduled PDSCH in the B-position and the PDSCH in the SPS in the D-position, the codebook is {0,1,0,1,0,0}.

As shown in fig. 3, PUCCHs carrying HARQ-ACKs are all transmitted by default on one fixed cell (e.g., PCell), however, when the PUCCH cannot be transmitted (e.g., the time domain position of the PUCCH and the downlink symbol overlap), the PUCCH can only be delayed until the next slot, which increases the delay, and therefore, rel-17 introduces PUCCH cell switching characteristics in order to solve this problem. In this feature, there is a 1-bit PUCCH cell indication field in DCI, which indicates whether the PUCCH carrying HARQ-ACK is on the PCell or on another PUCCH-scsell. When the cell indication field in the DCI indicates that the PUCCH is sent on the PCell, the terminal equipment determines the value of K1 according to the K1 set of the PCell; when the cell indication field in the DCI indicates that the PUCCH is transmitted on the PUCCH-scell, the terminal device determines a value of K1 according to the K1 set of the PUCCH-scell.

For example, as shown in fig. 4, DCI on slot 0 indicates that HARQ-ACK is transmitted on PUCCH of PCell (i.e., cell indication field indicates PCell), and bit value of feedback timing indication field of PDSCH to HARQ-ACK in DCI is "00". Assuming that the set of K1 in PCell is {1,2}, the value of K1 is indicated as "1". It can also be understood that HARQ-ACK is transmitted on PUCCH of slot 1 (slot 0+k1) on PCell. The DCI on slot 1 indicates that HARQ-ACK is transmitted on PUCCH of PUCCH-scell (i.e. the cell indication field indicates PUCCH-scell), and the bit value of the feedback timing indication field of PDSCH to HARQ-ACK in the DCI is "01". Assuming that the set of K1 in PUCCH-scell is {2,3,4,5}, the value of K1 is indicated as "3". It can also be understood that HARQ-ACK is transmitted on PUCCH of slot 4 (slot 1+k1) on PUCCH-scell.

If the DCI activates SPS scheduling (i.e., the DCI is "SPS-activated DCI"), and the cell indication field in the DCI indicates that the bearer HARQ-ACK is on the PUCCH-scell, the terminal device determines the value of K1 from the set of K1 configured on the PUCCH-scell. As described above, once SPS is activated, the time domain position of PUCCH carrying HARQ-ACK of SPS PDSCH may follow the value of K1 indicated in DCI activating SPS. As shown in fig. 5, the DCI activating SPS indicates k1=3, and PUCCH carrying HARQ-ACK of dynamically scheduled PDSCH is at slot 3 of SCell. Thereafter, when determining the time domain position of the PUCCH carrying HARQ-ACK for SPS for PDSCH of SPS, the value of K1 is used. For example, as shown in fig. 5, assuming that the terminal device receives the PDSCH of the SPS on slot 4, the terminal device determines that the PUCCH of the HARQ-ACK carrying the PDSCH of the SPS is at slot7 (slot 4+k1) of the PCell.

However, according to the type 1 codebook generation rule described above, for the semi-statically scheduled PDSCH, if the UE determines the K1 value along the K1 set in the SCell, determining the time domain position of the PUCCH carrying the HARQ-ACK of the semi-statically scheduled PDSCH on the PCell may result in the HARQ-ACK codebook not including the HARQ-ACK bits of the semi-statically scheduled PDSCH. In other words, the time domain position of the PUCCH carrying HARQ-ACK information of the semi-statically scheduled PDSCH determined by the terminal device may be invalid, thereby affecting the performance of data transmission.

In this application, the first cell in the following embodiments may be a PUCCH-SCell, and the second cell may be a PCell or a PUCCH-SCell.

It should be noted that, the SCell in the following embodiments in this application may be understood as the PUCCH-SCell described above; the PCell referred to in the embodiments described below may be understood as a PCell if in a primary PUCCH group and as a PUCCH-SCell if in a secondary PUCCH group.

In view of this, the present application provides a hybrid automatic repeat request acknowledgement HARQ-ACK method and apparatus, which can ensure that the time domain position of the PUCCH carrying HARQ-ACK determined by the terminal device is valid, thereby ensuring the performance of data transmission.

Fig. 6 is a schematic flow chart of a hybrid automatic repeat request acknowledgement, HARQ-ACK, method 600 provided herein, the method comprising:

in step 601, the network device sends DCI to the terminal device. Correspondingly, the terminal equipment receives the DCI.

In one possible implementation, the network device may send DCI to the terminal device through the PDCCH. The DCI may be used to schedule downlink data, where scheduling may also be understood as dynamic scheduling. The dynamically scheduled downlink data may be carried by PDSCH.

The DCI may include first indication information, where the first indication information indicates that the terminal device transmits first HARQ-ACK information on the first cell through the first PUCCH, and the first HARQ-ACK information is HARQ-ACK information corresponding to downlink data scheduled by the DCI. The first indication information herein may also be referred to as a cell indication field.

The DCI may also be used to activate SPS, and it is also understood that the DCI is DCI that activates SPS. The DCI may further include second indication information indicating a first value, the first value being a value in a first set, and the second value also being included in a second set.

In the application, the first set belongs to a first cell, the first cell may be a PUCCH-scell, and the first set may be a K1 set on the PUCCH-scell; the second set belongs to a second cell, which may be a PCell or a PUCCH SCell, and the second set may be: k1 set on PCell or PUCCH SCell. Wherein the value in the first set indicates a slot offset value between a PDSCH carrying downlink data and a first PUCCH carrying first HARQ-ACK information; the values in the second set indicate slot offset values between PDSCH carrying SPS data and a second PUCCH carrying second HARQ-ACK information. The second HARQ-ACK information is HARQ-ACK information corresponding to data of the SPS.

The length of the slot in this application may be 14 symbols, 7 symbols or 2 symbols. When the slot length is 7 symbols or 2 symbols, the slot may also be referred to as a sub-slot.

If the subcarrier intervals of the cell (e.g., cell #a) where the PDSCH is located and the cell (e.g., cell #b) where the PUCCH is located are different, the slot offset between the PDSCH and the PUCCH may be determined according to the slot length of the cell #b.

For example, assume that the K1 set of cell #b is {2,3,4,5}, taking a value of "2" in the K1 set as an example, which indicates that the slot offset value between the PDSCH carrying downlink data and the first PUCCH carrying the first HARQ-ACK information is 2 slots. As shown in fig. 7 (a), in one implementation, the slot offset value may be understood as: a slot offset value between a last slot ("slot 1") overlapping with a slot in which the PDSCH is located and a slot ("slot 3") in which the PUCCH is located in cell #b. In another implementation, as shown in (b) of fig. 7, the slot offset value may be understood as: a slot offset value between a first slot ("slot 0") overlapping with the PDSCH end symbol and a slot ("slot 2") where the PUCCH is located in cell #b.

In the embodiments of the present application, the subcarrier interval of the cell in which the PDSCH is located and the subcarrier interval of the cell in which the PUCCH is located are the same as each other, but the technical solutions related to the present application may be applied to a scenario in which the subcarrier interval of the cell in which the PDSCH is located and the subcarrier interval of the cell in which the PUCCH is located are different. In consideration of the fact that the subcarrier interval of the cell in which the PDSCH is located and the subcarrier interval of the cell in which the PUCCH is located are different, the slot offset determined by the K1 value may be determined according to the subcarrier interval of the cell in which the PUCCH is located. In other words, on which cell the PUCCH is, the slot offset is determined according to the subcarrier spacing of which cell.

As an example, assuming that the first set is {2,3,4,5}, for example, the second indication information is "00", the second indication information indicates the first value in the first set, namely: the first value is "2"; for another example, the second indication information is "11", and the fourth value in the second set indicated by the second indication information is: the first value is "5".

In other words, in this embodiment, the first value in the first set indicated by the second indication information of the network device is not arbitrarily indicated, and the second set also needs to include the first value. As an example, assuming that the first set is {2,3,4,5}, the second set is {1,2}, where the first value should be "2", the second indication information is "00". At this time, the first value in the first set indicated by the second indication information is also included in the second set. If the value in the first set indicated by the second indication information is not "2" (or, the bit value of the second indication information is not "00"), for example, when the second indication information is "11", the first value is "5". When the terminal device receives the second instruction information, the terminal device confirms the instruction information as erroneous instruction information (may also be understood as "illegal value"). At this point, the terminal device may consider this to be an error case. The terminal may discard the second indication information, discard the downlink control information, or not discard the downlink control information, but not receive the semi-statically scheduled data.

It may also be understood that, in this embodiment, the first value in the first set indicated by the second indication information that the terminal device does not desire to receive is not included in the second set. Or when the activation DCI indicates that HARQ-ACK is transmitted on the SCell through the PUCCH, the terminal device does not expect the K1 value indicated in the activation DCI to be a value not belonging to the intersection of the first set and the second set.

It can also be understood that the terminal device does not expect the SPS activation DCI to indicate the slot timing value for transmitting HARQ-ACK information, does not belong to the intersection of the set of slot timing values of the activated Downlink (DL) -BWP of the Pcell and the set of slot timing values of the activated DL-BWP of the PUCCH-scell.

In this embodiment, DCI and PDSCH scheduled by the DCI may be in any one cell, and is not limited. For example, the network device may send DCI on a first cell or may send DCI on a second cell; the first PDSCH of the DCI schedule may be on the first cell or on the second cell; the second PDSCH of the DCI-activated SPS may be on the first cell or on the second cell.

Optionally, step 602 is further included, where the network device may further send a first PDSCH to the terminal device, where the first PDSCH is the PDSCH dynamically scheduled by the DCI. Correspondingly, the terminal equipment receives the first PDSCH of the dynamic scheduling.

Optionally, step 603 is further included, where the terminal device determines, according to the first value, a time domain position of the first PUCCH carrying the first HARQ-ACK information.

As an example, with continued reference to fig. 7, assuming that the terminal device receives the first PDSCH scheduled by DCI on slot 0, if the second indication information is "00" and the first value is "2", at this time, the terminal device determines that the time domain position of the first PUCCH carrying the first HARQ-ACK information is slot 2.

Optionally, step 604 is further included, where, on the first cell, the terminal device sends the first HARQ-ACK information through the first PUCCH.

Optionally, step 605 is further included, where the network device receives, on the first cell, a first PUCCH carrying the first HARQ-ACK information. The number of time slots spaced between the time domain position of the second PUCCH and the PDSCH carrying SPS data is a first value.

It may also be understood that a slot offset value between a PDSCH carrying downlink data and a first PUCCH carrying first HARQ-ACK information is a first value. Specifically, the network device may determine the time domain position of the first PUCCH with reference to the following description of step 610.

Optionally, the method 600 further comprises step 606, where the network device sends a second PDSCH to the terminal device, which may be a PDSCH of the SPS. Correspondingly, the terminal equipment receives a second PDSCH of the SPS.

In step 607, the terminal device determines, according to the first value, a time domain position of a second PUCCH carrying the second HARQ-ACK information.

As an example, referring to fig. 5, assuming that the terminal device receives the second PDSCH of the SPS on slot 4, if the second indication information is "01" and the first value is "3", at this time, the terminal device determines that the time domain position of the second PUCCH carrying the second HARQ-ACK information is slot 7.

Specifically, the PDSCH on which slot the terminal device receives SPS may be preconfigured by the network device. In one implementation, before step 601, step 608 may further be included, where the network device sends configuration information to the terminal device, where the configuration information is used to configure a period of SPS (e.g., the terminal device receives the second PDSCH of the SPS by several slots), configure the second PUCCH (e.g., a format of the PUCCH, a number of symbols, etc.) that carries SPS HARQ-ACKs, and so on.

In step 609, the terminal device sends the second HARQ-ACK information on the second cell through the second PUCCH.

In step 610, the network device receives a second PUCCH carrying second HARQ-ACK information on a second cell.

The time slot offset value between the second PDSCH carrying SPS data and the second PUCCH carrying the second HARQ-ACK information is the first value.

In one implementation, the network device may determine the first value first and then determine the time domain position of the second PUCCH based on the first value. In another implementation, the network device may also determine a time slot for receiving the second PUCCH (for example, for an emergency service, the network device may schedule the resource of a time slot to receive the second PUCCH) according to the delay requirement of the service, the available resource, and the like, and then determine whether the scheduled time slot meets the requirement of the first value. The network device may receive the second PUCCH using the scheduled time slot if the time slot meets the requirement of the first value, otherwise the network device may reschedule resources of a certain time slot, thereby finally determining a time domain position of the received second PUCCH.

In this application, "transmitting DCI to a terminal device through PDCCH" may also be understood that the DCI is carried on PDCCH. Similarly, "transmitting the first HARQ-ACK information through the first PUCCH" may also be understood as carrying the first HARQ-ACK information on the first PUCCH; "transmitting the second HARQ-ACK information through the second PUCCH" may also be understood as carrying the second HARQ-ACK information on the second PUCCH.

Based on the above technical solution, the DCI sent by the network device to the terminal device is used for scheduling downlink data while activating semi-persistent scheduling, and the timing offset value from PDSCH indicated by the DCI to HARQ feedback may indicate the time domain position of PUCCH carrying HARQ-ACK corresponding to the semi-persistent scheduling data and the time domain position of PUCCH carrying HARQ-ACK corresponding to the downlink data at the same time. And the timing offset value belongs to both the K1 set in the first cell and the K1 set in the second cell. By the scheme, the time domain position of the PUCCH carrying the HARQ-ACK information corresponding to the semi-static scheduling data, which is determined by the terminal equipment, can be enabled to be effective, namely the HARQ-ACK code book on the second cell can comprise the HARQ-ACK bit of the PDSCH of the semi-static scheduling, so that the HARQ-ACK information corresponding to the semi-static scheduling data can be fed back in time, and the transmission performance of the semi-static scheduling data is guaranteed.

The present application also provides a communication method 800, and a schematic flow chart of the method 800 may refer to fig. 6, and the same steps may refer to the description in the method 600, which is not specifically described herein. Specifically, compared to the method 600, the DCI in this embodiment may refer to the description of the DCI in the method 600, except that the DCI in this embodiment does not include the second indication information, but may include the third indication information, and the method includes:

in step 801, the network device sends DCI to the terminal device. Correspondingly, the terminal equipment receives the DCI.

A third indication information (e.g., a timing indication field between PDSCH to HARQ-ACK) may be included in the DCI, the third indication information indicating values in the first set and values in the second set.

It is also understood that in this embodiment, the third indication information may indicate the values in the first set, or may indicate the values in the second set. Assuming that the first set is {2,3,4,5}, the second set is {1,2}, and assuming that the bit value of the third indication information is "01", at this time, in the first set, the value indicated by the third indication information is "3"; in the second set, the value indicated by the third indication information is "2". In the above example, it may be found that the number of values contained in the second set is less than the number of values contained in the first set. For this scenario, the present application proposes the following two implementations:

Mode 1: it may be agreed that in the second set, a value may always be indicated in the second set, irrespective of the value of the bit value of the third indication information. Thus, the third indication information is made to indicate a valid value in the second set.

As an example, when it is assumed that the bit value of the third indication information is "11", in the first set, the value indicated by the third indication information is "5" at this time; in the second set, a protocol convention of "11" may indicate a first value (e.g., "1") in the second set, or a protocol convention of "11" may indicate a second value (e.g., "2") in the second set. Similarly, assuming that the bit value of the third indication information is "10", it is also possible to agree on the protocol in the second set that "10" indicates the first value in the second set or the second value in the second set. Alternatively, the values in the second set may be repeated to obtain a second set of the same size as the first set, e.g., the second set becomes {1,2} or {1,2,1,2} or {1,2,1,1} or the like at this time.

Mode 2: the network device may pre-determine a set with fewer values in the first set and the second set, assuming that the first set is {2,3,4,5} and the second set is {1,2}, where the second set contains fewer values. At this time, the network device may determine that the third indication information indicates that the value does not fail in the second set when the third indication information is transmitted. In other words, the design of the bit value of the third indication information by the person skilled in the art would be designed according to the indication of two values instead of four values.

As one example, the bit values of the third indication information transmitted by the network device may include "00" and "01", and the bit values of the third indication information may not appear "00", "01", "10", and "11" indicating a four-value design. That is, the network device ensures that the third indication information must indicate a value in the second set.

In other words, in this embodiment, the PDSCH-to-HARQ-ACK feedback timing indication field in the DCI indicates two values of K1, one being the value in the set of K1 in the PUCCH-scell and the other being the value in the set of K1 in the PCell. Thus, the third indication information is made to indicate a valid value in the second set as well. It may also be understood that in this embodiment, the terminal device does not expect the third indication information to have an indication exceeding the value comprised in the second set. Or it may be understood that the UE does not expect the third indication information to be out of range of the second set.

In this embodiment, DCI and PDSCH scheduled by the DCI may be in any one cell, and is not limited. For example, the network device may send DCI on a first cell or may send DCI on a second cell; the PDSCH scheduled by DCI may be on the first cell or on the second cell; the PDSCH of the DCI activated SPS may be on the first cell or the second cell.

Optionally, step 802 is further included, where the network device sends a first PDSCH to the terminal device, where the first PDSCH may be the DCI dynamically scheduled PDSCH. Correspondingly, the terminal equipment receives the first PDSCH of the dynamic scheduling.

Optionally, step 803 is further included, where the terminal device determines, according to the third indication information, a time domain position of the first PUCCH carrying the first HARQ-ACK information.

Specifically, for the downlink data, the terminal device may determine a time domain position of the first PUCCH based on the third indication information and the first set. As an example, as shown in fig. 8, assuming that the third indication information is "00", the first set is {2,3,4,5}, and assuming that the terminal device receives the DCI scheduled PDSCH on slot 0, the terminal device may determine the time domain position of the first PUCCH to be slot 2.

Optionally, step 804 is further included, where the terminal device sends the first HARQ-ACK information on the first cell through the first PUCCH. For example, the terminal device transmits the first HARQ-ACK information over the first PUCCH on PUCCH-scell.

Optionally, step 805 is further included, where the network device receives a first PUCCH carrying first HARQ-ACK information on the first cell. The number of time slots of the interval between the time domain position of the first PUCCH and the PDSCH carrying downlink data is a value indicated by the third indication information.

Specifically, the number of slots spaced between the time domain position of the first PUCCH and the PDSCH carrying downlink data is a value in the first set indicated by the third indication information. The manner in which the network device determines the time domain position of the first PUCCH may refer to step 609 in method 600, which is not described herein.

In step 806, the network device transmits a second PDSCH, which may be a PDSCH of the SPS, to the terminal device. Correspondingly, the terminal equipment receives a second PDSCH of the SPS.

In step 807, the terminal device determines, according to the third indication information, a time domain position of the second PUCCH carrying the second HARQ-ACK information and a time domain position of the first PUCCH carrying the first HARQ-ACK information.

Specifically, for SPS scheduled data, the terminal device may determine a time domain position of the second PUCCH based on the third indication information and the second set. As an example, as shown in fig. 8, assuming that the third indication information is "00", the second set is {1,2}, and assuming that the terminal device receives the PDSCH of the SPS on slot 4, the terminal device may determine the time domain position of the second PUCCH to be slot 5.

Optionally, before step 801, step 808 may be further included, where the network device sends configuration information to the terminal device. Specifically, reference may be made to step 608 in method 600.

Step 809, the terminal device sends second HARQ-ACK information on the second cell through a second PUCCH.

For example, the terminal device transmits second HARQ-ACK information on the PCell through a second PUCCH.

In step 810, the network device receives a second PUCCH carrying second HARQ-ACK information on a second cell. The number of time slots spaced between the time domain position of the second PUCCH and the PDSCH carrying the SPS data is a value indicated by the third indication information.

Specifically, the number of slots spaced between the time domain position of the second PUCCH and the PDSCH carrying the SPS data is a value in the second set indicated by the third indication information.

Based on the above technical solution, in this embodiment, DCI sent by a network device to a terminal device is used to schedule downlink data while semi-persistent scheduling is activated, and a timing offset value from PDSCH indicated by the DCI to HARQ feedback may indicate a time domain position of PUCCH carrying HARQ-ACK corresponding to semi-persistent scheduled data in a K1 set of a second cell and indicate a time domain position of PUCCH carrying HARQ-ACK corresponding to the downlink data in a K1 set of a first cell at the same time. By the scheme, the time domain position of the PUCCH carrying the HARQ-ACK information corresponding to the semi-static scheduling data, which is determined by the terminal equipment, can be enabled to be effective, namely the HARQ-ACK code book on the second cell can comprise the HARQ-ACK bit of the PDSCH of the semi-static scheduling, so that the HARQ-ACK information corresponding to the semi-static scheduling data can be fed back in time, and the transmission performance of the semi-static scheduling data is guaranteed.

The method 600 and the method 800 provided in the present application may also be applied in the following scenario. For example, DCI activating SPS indicates a first PUCCH carrying HARQ-ACK for downlink data is transmitted on PUCCH-scell, and a second PUCCH carrying SPS HARQ-ACK is also transmitted on PUCCH-scell. That is, in this scenario, both the PUCCH of the downlink data and the PUCCH of the SPS may be transmitted on PUCCH-scell. Subsequently, the network device indicates to "deactivate" the PUCCH-scell (deactivated PUCCH-scell may be understood as meaning that the network device indicates that the terminal device cannot transmit data on the PUCCH-scell), at which time the second PUCCH carrying SPS HARQ-ACK may be on the PCell. In this scenario, the methods 600 and 800 described above also apply.

For example, in this scenario, after the network device sends the "deactivate" PUCCH-scell indication, it needs to determine the current K1 value, e.g. whether the current K1 value is the provided K1 value in method 600 or method 800, if the K1 value is the K1 value determined by method 600 or method 800 of the present application, the network device may receive the PUCCH of the SPS HARQ-ACK by method 600 or method 800 of the present application; if the K1 value is not the K1 value determined by the methods 600 and 800 of the present application, the network device may retransmit the value of the indication information indication K1 to determine the time domain position of the PUCCH of the SPS HARQ-ACK while transmitting the "deactivate" PUCCH-sSCell indication.

As an example, as shown in (a) of fig. 9, it is assumed that a terminal device receives DCI on slot 0 of a PCell, the DCI being DCI activating SPS, and the DCI indicating a first PUCCH transmitting HARQ-ACK carrying downlink data on a PUCCH-scsell, and a second PUCCH carrying SPS HARQ-ACK are also on the PUCCH-scsell. Assuming that the PDSCH-to-HARQ-ACK feedback timing indication field in this DCI is "00", the value of K1 is "2" in the K1 set of PUCCH-scell. At this time, the terminal device determines, according to the value of K1, a first PUCCH for transmitting HARQ-ACK carrying downlink data on slot 2 of the PUCCH-scell. Assuming that the terminal device receives the SPS PDSCH on slot 4 of the PCell, the terminal device determines, according to the K1 value, a first PUCCH for transmitting HARQ-ACKs carrying downlink data on slot 6 of the PUCCH-scsell. Assuming that the network device indicates to deactivate PUCCH-scell on slot 7, the network device may receive HARQ-ACK bits for SPS on slot 0 of the PCell due to the current K1 value also being included in the K1 set of the PCell.

Alternatively, as another example, as shown in (b) of fig. 9, it is assumed that the PDSCH-to-HARQ-ACK feedback timing indication field in the DCI is "00", and the value of K1 is "2" in the K1 set of PUCCH-scell. According to the technical solution of the method 800 of the present application, in mode 1, a K1 value can always be indicated in the set of PCell when the PDSCH-to-HARQ-ACK feedback timing indication field is "00", so that after the network device sends "deactivated" PUCCH-scell, the SPS HARQ-ACK bit is received on the PCell. According to the technical solution of the method 800 of the present application, in mode 2, since the PDSCH-to-HARQ-ACK feedback timing indication field is "00", a K1 value may also be indicated in the set of PCell, for example, the K1 value is 1, so after the network device sends the "deactivated" PUCCH-scell, the SPS HARQ-ACK bit may be received on time slot 9 of the PCell. However, if it is assumed that the PDSCH-to-HARQ-ACK feedback timing indication field is "11", the value of K1 cannot be indicated at the set of PCell at this time, in the manner 2 in method 800. Therefore, the network device needs to retransmit the value of the indication information indication K1 while transmitting the "deactivate" PUCCH-scell indication.

Further, the present application also considers that, after the terminal device determines the time domain position of the second PUCCH on the second cell according to the schemes of the methods 600 and 800 of the present application, if the time domain position of the second PUCCH on the PCell overlaps with a downlink symbol, or a symbol used for transmitting a synchronization signal block (synchronization signal block, SSB), or a PDCCH common search space associated control resource set (CORESET) symbol of type 0, when the second PUCCH cannot be transmitted, in this scenario, the terminal device may discard the PUCCH on the second cell (because of overlapping with the downlink symbol). Specifically, the terminal device may discard the second PUCCH on the second cell in the following implementation manner.

Considering that although the SPS HARQ-ACK PUCCH is on the second cell, there may or may not be HARQ-ACK bit positions corresponding to the SPS candidate PDSCH on the type 1 codebook of the first cell (specifically, on the type 1 codebook of the first cell, whether there may be HARQ-ACK bit positions corresponding to the SPS candidate PDSCH is at least related to the subcarrier spacing of the first cell, the subcarrier spacing of the second cell, the K1 set on the first cell, and the current K1 value, which is not described in detail herein). In this scenario, discarding the second PUCCH may take the following implementation:

As one example: if there is no HARQ-ACK bit position corresponding to the SPS candidate PDSCH on the type 1 codebook of the PUCCH-scell, at this time, the terminal device may not transmit the second PUCCH on the PCell, and the codebook to be transmitted on the PUCCH-scell is independent of the SPS candidate PDSCH on the PCell, and may not be considered.

As another example: if there is an HARQ-ACK bit position corresponding to the candidate PDSCH of SPS on the type 1 codebook of PUCCH-scell, at this time, even if the terminal device does not transmit the second PUCCH on the PCell, the HARQ-ACK bit position corresponding to the candidate PDSCH of SPS on the type 1 codebook of PUCCH-scell needs to be considered. At this time, HARQ-ACK bit positions corresponding to candidate PDSCH of SPS may be padded with "NACK" in the type 1 codebook of PUCCH-scell.

For example, as shown in fig. 10, assuming that the subcarrier spacing of the PCell is 30khz, the subcarrier spacing on the PUCCH-scsell is 15khz, the K1 set on the PCell is {1,3}, the K1 set of the PUCCH-scsell is {1,2,3,4}, it is assumed that the terminal device receives the PDSCH of the SPS on slot 4, and the value of K1 is "3", the second PUCCH of the HARQ-ACKs carrying the PDSCH of the SPS should be discarded on slot 7 according to the method of the present application. However, since the codebook to be transmitted on slot 3 of the PUCCH-SCell contains the HARQ-ACK bit position of PDSCH corresponding to PDSCH received on slot 4 of the PCell (since the codebook to be transmitted on slot 3 of the PUCCH-SCell contains the HARQ-ACK bit position of SPS in PUCCH-SCell (when the value of K1 in the K1 set of PUCCH-SCell is "3"), slot 1 (when the value of K1 in the K1 set of PUCCH-SCell is "2"), slot 2 (when the value of K1 in the K1 set of PUCCH-SCell is "1"), and also contains the HARQ-ACK bit position of SPS on slot 4 (when the value of K1 in the K1 set of PCell is "1").

If the subcarrier spacing of the PCell is smaller than that of the PUCCH-scsell, there are multiple slots on the PUCCH-scsell that overlap with the slots of the PUCCH carrying SPS HARQ-ACKs on the PCell, then a slot may be agreed by the protocol, and the HARQ-ACK bit position corresponding to the SPS candidate PDSCH on the slot may be filled with "NACK". At this time, the K1 value on the PUCCH-scsell corresponding to the SPS PDSCH is different from the K1 value on the PCell corresponding to the SPS PDSCH.

If the subcarrier spacing of the PCell is the same as the subcarrier spacing of the PUCCH-scsell, only one time slot on the PUCCH-scsell overlapping with the time slot of the PUCCH carrying the SPS HARQ-ACK on the PCell is provided, and a "NACK" is also filled in the HARQ-ACK bit position corresponding to the SPS candidate PDSCH of the time slot, where the K1 value on the PUCCH-scsell corresponding to the SPS PDSCH is the same as the K1 value on the PCell corresponding to the SPS PDSCH.

Fig. 11 is a schematic flow chart diagram of a communication method 900 provided herein, the method comprising:

in step 901, the network device sends configuration information to the terminal device. Correspondingly, the terminal equipment receives the configuration information.

In this embodiment, the configuration information is used to configure a third PUCCH carrying third information for the second cell, where the third PUCCH overlaps the PUSCH in the time domain.

In this application, "overlapping in the time domain" is understood to mean partially overlapping in the time domain, or completely overlapping in the time domain.

In this embodiment, the third information may be, for example: SPS HARQ-ACK information, channel state information (channel state information, CSI), scheduling request information (SR). That is, the third PUCCH may also be understood as a semi-static PUCCH.

In step 902, the network device sends DCI to the terminal device. Correspondingly, the terminal equipment receives the DCI.

In one implementation, the network device may send DCI to the terminal device over the PDCCH.

The DCI may be used to schedule downlink data, e.g., the DCI may be used to dynamically schedule PDSCH; for another example, the DCI may be used for BWP handover.

The DCI may include first indication information (e.g., a cell indication field) that indicates a terminal device to transmit first HARQ-ACK information on a first cell through a first PUCCH, where the first HARQ-ACK information is HARQ-ACK information corresponding to downlink data.

Optionally, in one implementation, the first PUCCH overlaps with a PUSCH time domain location.

In step 903, the network device transmits a first PDSCH, which may be a dynamically scheduled PDSCH, to the terminal device. Correspondingly, the terminal equipment receives the first PDSCH of the dynamic scheduling.

In step 904, the terminal device discards the third PUCCH.

It is considered that although the SPS HARQ-ACK PUCCH is on the second cell, there may or may not be HARQ-ACK bit positions corresponding to the candidate PDSCH of SPS on the type 1 codebook of the first cell. In this scenario, dropping the third PUCCH may employ the following implementation:

as one example: if there is no HARQ-ACK bit position corresponding to the SPS candidate PDSCH on the type 1 codebook of the PUCCH-scell, at this time, the terminal device may not transmit the third PUCCH on the PCell, and the codebook to be transmitted on the PUCCH-scell is independent of the SPS candidate PDSCH on the PCell, and may not be considered.

As another example: if there is an HARQ-ACK bit position corresponding to the candidate PDSCH of SPS on the type 1 codebook of PUCCH-scell, at this time, even if the terminal device does not transmit the third PUCCH on the PCell, the HARQ-ACK bit position corresponding to the candidate PDSCH of SPS on the type 1 codebook of PUCCH-scell needs to be considered. At this time, HARQ-ACK bit positions corresponding to candidate PDSCH of SPS may be padded with "NACK" in the type 1 codebook of PUCCH-scell. In this case, the HARQ-ACK bit position corresponding to the candidate PDSCH of SPS may be padded with "NACK" in the type 1 codebook on the slot of the SCell where the slots on the PCell where the SPS HARQ-ACK PUCCH is located overlap. If a plurality of overlapped slots exist, one slot can be selected, and the HARQ-ACK bit position corresponding to the SPS candidate PDSCH on the slot is filled with NACK.

Based on the above technical solution, in the present application, if the third PUCCH carrying the third information overlaps the PUSCH in the time domain in a scenario where PUCCHs transmitting information are respectively provided in two cells, the terminal device may discard the third PUCCH, so that the terminal device does not need to multiplex control channels on two cells (may also be understood as "cross cells"), and then multiplexes the control channels into the corresponding PUSCH, and at the same time, the number of PUSCHs carrying uplink control information may be reduced, and the multiplexing complexity of the terminal device may be simplified.

In one implementation, when the time domain position of the PDCCH carrying the DCI is before the time domain position of the PUSCH and the time domain position interval between the PDCCH and the PUSCH is greater than or equal to the first duration, the terminal device may discard the third PUCCH.

In another implementation, when the time domain position of the PDCCH carrying the DCI is before the time domain position of the third PUCCH and the time domain position interval between the PDCCH and the PUCCH is greater than or equal to the first duration, the terminal device may discard the third PUCCH.

It may also be understood that, in the present application, whether the terminal device receives DCI successfully affects whether the terminal device discards the PUCCH on the PCell. Assuming that 3 symbols (an example of the first duration) are required for the terminal device to parse the DCI, the terminal device needs to parse the DCI successfully before transmitting the PUSCH or before transmitting the third PUCCH.

The first time length in this embodiment is at least X symbols, in one implementation, if the network device configures the UE with processing capability 2, when the subcarrier spacing is 15kHz, x=3 symbols; when the subcarrier spacing is 30kHz, x=4.5 symbols; when the subcarrier spacing is 60kHz, x=9 symbols; in another implementation, if the network device does not configure the UE with processing capability 2, x=8 when the subcarrier spacing is 15 kHz; when the subcarrier spacing is 30kHz, x=10 symbols; when the subcarrier spacing is 60kHz, x=17 symbols; when the subcarrier spacing is 120kHz, x=20 symbols. In yet another implementation, the first time length, i.e., how many seconds the X symbols are, may be determined by the following equation: t=n ₃ ·(2048+144)·κ·2 ^-μ ·T _c Wherein N is ₃ The number of symbols (for example, X described above); kappa is 64; mu represents subcarrier spacing, T _c ＝1/(4096×480kHz)。

When the time domain positions of the first PUCCH and the PUSCH are not overlapped, the terminal equipment sends first HARQ-ACK information through the first PUCCH; when the time domain positions of the first PUCCH and the PUSCH overlap, the terminal device may send the first HARQ-ACK information through the PUSCH, and may also be understood as multiplexing the PUCCH onto the PUSCH. The PUSCH may not overlap with the third PUCCH, i.e. the network device ensures that the PUSCH cannot overlap with the first PUCCH and the third PUCCH simultaneously.

In step 905, the network device does not receive a third PUCCH on the second cell.

Based on the above technical solution, in this embodiment, by providing the first duration, the network device may determine that the terminal device discards the third PUCCH, that is, the network device may also determine that the third information is not multiplexed on the PUSCH. Therefore, the network equipment does not need blind detection when detecting the PUSCH, and the detection complexity of the network equipment is reduced. Alternatively, it may be understood that if the first duration is not provided, the network device cannot determine whether the terminal device discards the third PUCCH, and the network device cannot determine whether the third information is multiplexed on the PUSCH. Therefore, when the network device detects the PUSCH, it is necessary to blindly detect whether the PUSCH is multiplexed with the third information, and the detection complexity is high.

For example, in fig. 12 (a), when the third PUCCH carrying the third information of the PDSCH of the SPS and the PUSCH have overlapping time domains, the terminal device discards the third PUCCH after the terminal device successfully parses the DCI. In fig. 12 (b), when the third PUCCH carrying the third information of the PDSCH of the SPS and the time domain of the PUSCH overlap with each other in the case of different subcarrier intervals, after the terminal device successfully parses the DCI, the terminal device discards the third PUCCH.

Optionally, the third PUCCH overlaps with a downlink symbol configured by the network device, or a symbol used for transmitting SSB, or a symbol of CORESET associated with PDCCH common search space of type0 in the time domain, as shown in (a) of fig. 12 and (b) of fig. 12.

Optionally, the time slot where the third PUCCH is located and the time slot where the first PUCCH is located overlap in time domain.

In this embodiment, the PUSCH may be the PUSCH of the first cell, the PUSCH of the second cell, or the PUSCH of a cell other than the first cell and the second cell, and is not limited.

In the various embodiments of the application, if there is no specific description or logical conflict, terms and/or descriptions between the various embodiments are consistent and may reference each other, and features of the various embodiments may be combined to form new embodiments according to their inherent logical relationships. To ensure that the different embodiments can be combined with each other.

It will be appreciated that in this application, both "in …" and "if" refer to the corresponding processing that the device would take in some objective case, are not intended to limit the time and do not require that the device be implemented with a judging action, nor are other limitations meant to be implied.

The above description has been presented mainly from the point of interaction between the nodes. It will be appreciated that each node, such as a terminal device or a network device, for implementing the above-mentioned functions, includes corresponding hardware structures and/or software modules for performing each function. Those of skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be appreciated that, in order to implement the functions in the above embodiments, the network device and the terminal include corresponding hardware structures and/or software modules that perform the respective functions. Those of skill in the art will readily appreciate that the elements and method steps of the examples described in connection with the embodiments disclosed herein may be implemented as hardware or a combination of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application scenario and design constraints imposed on the solution.

Fig. 13 and 14 are schematic structural diagrams of possible communication devices according to embodiments of the present application. These communication devices may be used to implement the functions of the terminal or the network device in the above method embodiments, so that the beneficial effects of the above method embodiments may also be implemented.

In the embodiment of the present application, the communication device may be one of the terminals 120a-120j shown in fig. 1, or may be the network device 110 or 110 shown in fig. 1, or may be a module (such as a chip) applied to the terminal or the network device. As shown in fig. 13, the apparatus 100 may include: a transceiver unit 110 and a processing unit 120.

When the apparatus 100 is configured to implement the function of the terminal device in the method 600 of the embodiment of the present application, the transceiver unit 110 is configured to receive downlink control information, where the downlink control information includes second indication information, the second indication information indicates a first value, the first value is a value in a first set, and the second set includes the first value; the processing unit 120 is configured to determine a time domain position of the second PUCCH according to the first value; the transceiver unit 110 is configured to send the second HARQ-ACK information through the second PUCCH.

The processing unit 120 is configured to determine a time domain position of the first PUCCH according to the first value; the transceiver unit is configured to send the first HARQ-ACK information through the first PUCCH at 110.

When the apparatus 100 is configured to implement the function of the terminal device in the method 800 of the embodiment of the present application, the transceiver unit 110 is configured to send downlink control information, where the downlink control information includes a third indication information indicating a value in the first set and a value in the second set. The processing unit 120 is configured to determine a time domain position of the first PUCCH and a time domain position of the second PUCCH according to the third indication information; the transceiver unit 110 is configured to send the first HARQ-ACK information through a first PUCCH; the transceiver unit 110 is configured to send, on the second cell, the second HARQ-ACK information through the second PUCCH. The processing unit 120 is configured to determine a time domain position of the first PUCCH according to the third indication information and the first set.

When the apparatus 100 is used to implement the functions of the terminal device in the method 900 of the embodiment of the present application: the transceiver unit 110 is configured to receive configuration information, where the configuration information is configured to configure a third PUCCH carrying third information for the second cell, and the third PUCCH overlaps the PUSCH in a time domain; the transceiver unit 110 is configured to receive downlink control information, where the downlink control information is used to schedule downlink data, and the downlink control information includes first indication information, where the first indication information indicates that the terminal device sends first HARQ-ACK information on a first cell through a first PUCCH, where the first HARQ-ACK information is HARQ-ACK information corresponding to the downlink data; the processing unit 120 is configured to discard the third PUCCH.

When the time domain position of the PDCCH carrying the downlink control information received by the transceiver unit 110 is before the time domain position of the PUSCH and the time domain position interval between the PDCCH and the PUSCH is greater than or equal to the first duration, the processing unit 120 discards the third PUCCH.

When the communication apparatus 100 is used to implement the functionality of the network device in the method 600 embodiment: the transceiver unit 110 is configured to send downlink control information, where the downlink control information includes second indication information, the second indication information indicates a first value, the first value is a value in a first set, and the second set includes the first value; the processing unit 120 is configured to determine a time domain position of the second PUCCH according to the first value; the transceiver unit 110 is configured to receive the second HARQ-ACK information through the second PUCCH.

The processing unit 120 is configured to receive the first HARQ-ACK information through the first PUCCH.

When the communication apparatus 100 is used to implement the functions of the network device in the embodiment of the method 800: the transceiver unit 110 is configured to send downlink control information, where the downlink control information includes third indication information indicating values in the first set and values in the second set. The processing unit 120 is configured to receive first HARQ-ACK information through the first PUCCH; the transceiver unit 110 is configured to receive the second HARQ-ACK information through the second PUCCH.

When the communication apparatus 100 is used to implement the functions of the network device in the method 900 embodiment: the transceiver unit 110 is configured to send configuration information, where the configuration information is configured to configure a third PUCCH carrying third information for the second cell, and the third PUCCH overlaps the PUSCH in a time domain; the transceiver unit 110 is configured to send downlink control information, where the downlink control information is used to schedule downlink data, and the downlink control information includes first indication information, where the first indication information indicates that the terminal device sends first HARQ-ACK information on a first cell through a first PUCCH, where the first HARQ-ACK information is HARQ-ACK information corresponding to the downlink data; the processing unit is configured to discard the third PUCCH.

When the time domain position of the PDCCH carrying the downlink control information sent by the transceiver unit 110 is before the time domain position of the PUSCH and the time domain position interval between the PDCCH and the PUSCH is greater than or equal to the first duration, the processing unit 120 does not receive the third PUCCH.

The above-mentioned more detailed descriptions of the processing unit 110 and the transceiver unit 120 may be directly obtained by referring to the related descriptions in the method embodiments shown in fig. 6 and 11, which are not repeated herein.

Fig. 14 is a schematic block diagram of a communication apparatus 200 provided in an embodiment of the present application. As shown, the apparatus 200 includes: at least one processor 220. The processor 220 is coupled to the memory for executing instructions stored in the memory to transmit signals and/or receive signals. Optionally, the apparatus 200 further comprises a memory 230 for storing instructions. Optionally, the apparatus 200 further comprises a transceiver 210, and the processor 220 controls the transceiver 210 to transmit signals and/or to receive signals.

It should be appreciated that the processor 220 and the memory 230 may be combined into a single processing device, and that the processor 220 is configured to execute program code stored in the memory 230 to perform the functions described above. In particular implementations, the memory 230 may also be integrated into the processor 220 or may be separate from the processor 220.

It should also be appreciated that transceiver 210 may include a transceiver (or receiver) and a transmitter (or transmitter). The transceiver may further include antennas, the number of which may be one or more. Transceiver 210 may be a communication interface or interface circuit.

Specifically, the transceiver 210 in the apparatus 200 may correspond to the transceiver unit 110 in the apparatus 100, and the processor 220 in the apparatus 200 may correspond to the processing unit 120 in the apparatus 100.

It should be understood that the specific process of each transceiver processor executing the corresponding steps has been described in detail in the above method embodiments, and will not be described herein for brevity.

When the communication device 200 is a chip applied to a terminal, the terminal chip implements the functions of the terminal in the above method embodiment. The terminal chip receives information from other modules (such as a radio frequency module or an antenna) in the terminal, and the information is sent to the terminal by the network equipment; alternatively, the terminal chip sends information to other modules in the terminal (e.g., radio frequency modules or antennas) that the terminal sends to the network device.

When the communication device is a module applied to the network device, the network device module implements the functions of the network device in the method embodiment. The network device module receives information from other modules (such as a radio frequency module or an antenna) in the network device, the information being transmitted to the network device by the terminal; alternatively, the network device module sends information to other modules in the network device (e.g., radio frequency modules or antennas) that the network device sends to the terminal. The network device module may be a baseband chip of the network device, or may be a DU or other module, where the DU may be a DU under an open radio access network (open radio access network, O-RAN) architecture.

The explanation and beneficial effects of the related content in any of the above-mentioned devices can refer to the corresponding method embodiments provided above, and are not repeated here.

According to the method provided in the embodiments of the present application, the present application further provides a computer program product, where a computer program code is stored, and when the computer program code runs on a computer, the computer is caused to perform the method performed by the terminal device in any one of the embodiments of the method 600, the method 800 and the method 900; or, a method executed by a network device in any one of the method 600, method 800, and method 900 embodiments;

According to the method provided in the embodiments of the present application, the present application further provides a computer readable medium, where a program code is stored, and when the program code runs on a computer, the program code causes the computer to perform the method performed by the terminal device in any one of the embodiments of the method 600, the method 800 and the method 900; or, the computer is caused to perform the method 600, 800, or the method performed by the network device in any of the method 900 embodiments.

According to the method provided by the embodiment of the application, the application further provides a communication system, which comprises a terminal device and a network device, wherein the terminal device is used for executing the method 600, and the network is used for executing the method 600; or, the terminal device is configured to perform the method 800, and the network is configured to perform the method 800; alternatively, the terminal device is configured to perform the method 900 and the network is configured to perform the method 900.

It is to be appreciated that the processor in embodiments of the present application may be a central processing unit (Central Processing Unit, CPU), but may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field programmable gate arrays (Field Programmable Gate Array, FPGA) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The general purpose processor may be a microprocessor, but in the alternative, it may be any conventional processor.

The method steps in the embodiments of the present application may be implemented in hardware, or in software instructions executable by a processor. The software instructions may be comprised of corresponding software modules that may be stored in random access memory, flash memory, read only memory, programmable read only memory, erasable programmable read only memory, electrically erasable programmable read only memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. The storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may reside in a network device or terminal. The processor and the storage medium may reside as discrete components in a network device or terminal.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are performed in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, a network device, a user device, or other programmable apparatus. The computer program or instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer program or instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center by wired or wireless means. The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that integrates one or more available media. The usable medium may be a magnetic medium, e.g., floppy disk, hard disk, tape; but also optical media such as digital video discs; but also semiconductor media such as solid state disks. The computer readable storage medium may be volatile or nonvolatile storage medium, or may include both volatile and nonvolatile types of storage medium.

In the various embodiments of the application, if there is no specific description or logical conflict, terms and/or descriptions between the various embodiments are consistent and may reference each other, and features of the various embodiments may be combined to form new embodiments according to their inherent logical relationships.

It will be appreciated that the various numerical numbers referred to in the embodiments of the present application are merely for ease of description and are not intended to limit the scope of the embodiments of the present application. The sequence number of each process does not mean the sequence of the execution sequence, and the execution sequence of each process should be determined according to the function and the internal logic.

Claims

1. A hybrid automatic repeat request acknowledgement HARQ-ACK information feedback method, performed by a terminal device or a module in a terminal device, comprising:

receiving downlink control information from a network device, the downlink control information being used for scheduling downlink data, the downlink control information including first indication information, the first indication information indicating that the terminal device transmits first HARQ-ACK information on a first cell through a first physical uplink control channel, the first HARQ-ACK information being HARQ-ACK information corresponding to the downlink data,

The downlink control information is further used for activating semi-static scheduling, the downlink control information further comprises second indication information, the second indication information indicates a first value, the first value is a value in a first set, the second set comprises the first value, and the value in the first set indicates a time slot offset value between a physical downlink shared channel carrying the downlink data and the first physical uplink control channel carrying the first HARQ-ACK information; the value in the second set indicates a time slot offset value between a physical downlink shared channel carrying the semi-statically scheduled data and a second physical uplink control channel carrying second HARQ-ACK information, wherein the second HARQ-ACK information is HARQ-ACK information corresponding to the semi-statically scheduled data;

determining a time domain position of the second physical uplink control channel according to the first value;

and transmitting the second HARQ-ACK information through the second physical uplink control channel on a second cell.

2. The method according to claim 1, wherein the method further comprises:

determining a time domain position of the first physical uplink control channel according to the first value;

And transmitting the first HARQ-ACK information through the first physical uplink control channel on the first cell.

3. The method according to claim 1 or 2, wherein the first cell is a physical uplink control channel handover secondary cell and the second cell is a primary cell or a physical uplink control channel secondary cell.

4. A hybrid automatic repeat request acknowledgement HARQ-ACK information feedback method, performed by a network device or a module in a network device, comprising:

transmitting downlink control information to a terminal device, the downlink control information being used for scheduling downlink data, the downlink control information including first indication information indicating that the terminal device transmits first HARQ-ACK information on a first cell through a first physical uplink control channel, the first HARQ-ACK information being HARQ-ACK information corresponding to the downlink data,

the downlink control information is also used to activate semi-persistent scheduling,

the downlink control information further includes second indication information, where the second indication information indicates a first value, the first value is a value in a first set, and the second set includes the first value, where the value in the first set indicates a time slot offset value between a physical downlink shared channel carrying the downlink data and the first physical uplink control channel carrying the first HARQ-ACK information; the value in the second set indicates a time slot offset value between a physical downlink shared channel carrying the semi-statically scheduled data and a second physical uplink control channel carrying second HARQ-ACK information, wherein the second HARQ-ACK information is HARQ-ACK information corresponding to the semi-statically scheduled data;

And receiving the second HARQ-ACK information through the second physical uplink control channel on a second cell, wherein the time slot number of the interval between the time domain position of the second physical uplink control channel and the physical downlink shared channel carrying the semi-statically scheduled data is the first value.

5. The method according to claim 4, wherein the method further comprises:

and receiving the first HARQ-ACK information through the first physical uplink control channel on the first cell, wherein the time domain position of the first physical uplink control channel is the number of time slots spaced between the first physical uplink control channel and a physical downlink shared channel carrying the downlink data as the first value.

6. The method of claim 4 or 5, wherein the first cell is a physical uplink control channel handover secondary cell and the second cell is a primary cell or a physical uplink control channel secondary cell.

7. A communication device comprising means or modules for performing the method of any of claims 1 to 3 or means or modules for performing the method of any of claims 4 to 6.

8. A communication device comprising a processor and interface circuitry for receiving signals from other communication devices than the communication device and transmitting to the processor or sending signals from the processor to other communication devices than the communication device, the processor being configured to implement the method of any one of claims 1 to 3 or to implement the method of any one of claims 4 to 6 by logic circuitry or execution of code instructions.

9. A computer readable storage medium, characterized in that the storage medium has stored therein a computer program or instructions which, when executed by a communication device, implement the method of any of claims 1 to 6.

10. A computer program product, characterized in that the computer program product comprises instructions for performing the method of any of claims 1 to 6.