CN115696616A

CN115696616A - Indication method of feedback information and communication device

Info

Publication number: CN115696616A
Application number: CN202110865190.3A
Authority: CN
Inventors: 丁洋; 李胜钰; 李锐杰
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2023-02-03
Also published as: WO2023005583A1

Abstract

The application provides an indication method and a communication device of feedback information, which are beneficial to improving the reliability of uplink data transmission of a second priority. The method comprises the following steps: the network equipment sends first DCI, wherein the first DCI is used for scheduling downlink data transmission borne on a PDSCH with a first priority and/or scheduling downlink data transmission borne on a PDSCH with a second priority, and correspondingly, the terminal equipment detects the first DCI in the PDCCH; the network equipment transmits a second DCI, wherein the second DCI is used for scheduling PUSCH with a second priority, the second DCI comprises DAI _ UL, and correspondingly, the terminal equipment receives the second DCI; and the terminal equipment transmits the first HARQ information and/or the second HARQ information on a PUSCH according to the detection condition of the first DCI and the DAI _ UL, and correspondingly, the network equipment receives the first HARQ information and/or the second HARQ information.

Description

Feedback information indicating method and communication device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method for indicating feedback information and a communications apparatus.

Background

Hybrid automatic repeat request (HARQ) is an efficient transmission mechanism. In a communication system, when receiving Downlink Control Information (DCI) for scheduling downlink data transmission carried on a physical downlink control channel (PDSCH), a terminal device may feed back an HARQ Acknowledgement (ACK) or Negative Acknowledgement (NACK) message to a network device. When receiving the fed back NACK message, the network device needs to retransmit the data. The method for feeding back whether data needs to be retransmitted or not by adopting the HARQ transmission mechanism can greatly improve the reliability of downlink data transmission on one hand. On the other hand, the overall resource consumption of data transmission can be reduced.

At present, when time domain collision occurs to transmission services with different priorities, HARQ feedback information corresponding to the transmission services with different priorities is multiplexed, that is, the HARQ information with different priorities is transmitted through a physical uplink shared channel (PUCCH) or a Physical Uplink Shared Channel (PUSCH) with the same priority. Under the scenario that HARQ information of different priorities is multiplexed in an uplink channel of the same priority, if a problem that a terminal device misses a DCI of a low priority occurs, a load size of the fed-back HARQ information may be in error, and at this time, if the terminal device uses a rate matching method to send control information and uplink data on a high-priority PUSCH, a mapping position of the high-priority uplink data may be in error and the decoding may not be successful, thereby affecting reliability of transmission of the high-priority uplink data.

Disclosure of Invention

The application provides an indication method and a communication device of feedback information, which are beneficial to improving the reliability of high-priority uplink data transmission.

In a first aspect, a method for indicating feedback information is provided, where the method includes: a terminal device detects first Downlink Control Information (DCI) in a Physical Downlink Control Channel (PDCCH), where the first DCI is used to schedule downlink data transmission carried on a PDSCH with a first priority and/or is used to schedule downlink data transmission carried on a PDSCH with a second priority, and the second priority is higher than the first priority; the terminal equipment receives second DCI from the network equipment, wherein the second DCI is used for scheduling a Physical Uplink Shared Channel (PUSCH) with the second priority, and the second DCI comprises downlink allocation indication information (DAI _ UL); the terminal equipment sends first hybrid automatic repeat request (HARQ) information and/or second HARQ information on the PUSCH according to the detection condition of the first DCI and the DAI _ UL, wherein the priority of the second HARQ information is higher than that of the first HARQ information; wherein, when the state value of the DAI _ UL is a first preset value and the load size of the first HARQ information is 1, the PUSCH does not include the first HARQ information; or, when the state value of the DAI _ UL is a first preset value and the payload size of the first HARQ information is 0, the PUSCH includes the first HARQ information with a fixed payload size, and the fixed payload is determined according to a predefined rule.

In the embodiment of the application, the terminal device sends the semi-static type first HARQ information and/or second HARQ information to the network device according to the detection condition of the first DCI and the value of DCI _ UL in the second DCI, so that it is effectively avoided that the terminal device sends HARQ information of an error load size to the network device due to missed detection of the first DCI used for scheduling downlink data transmission carried on the PDSCH of the second priority when the value of DCI _ UL is a preset value. The method is favorable for improving the reliability of the fed-back HARQ information and the reliability of the second priority uplink data transmission by redefining the DCI _ UL value and the load size of the HARQ information.

The second DCI may include one DAI _ UL or two DAI _ ULs, which is not limited in this application.

The HARQ information in the embodiments of the present application includes ACK and/or NACK.

It should be understood that each first DCI transmitted by the network device may have HARQ information with a corresponding payload size of 1. And the first DCI for scheduling downlink data transmission borne on the PDSCH of the first priority corresponds to the first HARQ information, the first DCI for scheduling downlink data transmission borne on the PDSCH of the second priority corresponds to the second HARQ information.

With reference to the first aspect, in some implementations of the first aspect, the sending the first HARQ information and/or the second HARQ information on the PUSCH includes: when the state value of the DAI _ UL is a first preset value and the load size of the second HARQ information is 1, the terminal equipment does not send the second HARQ information on the PUSCH; or, when the state value of the DAI _ UL is a first preset value and the payload size of the second HARQ information is 1, the terminal device sends the second HARQ information with the payload size of 1 on the PUSCH.

With reference to the first aspect, in certain implementations of the first aspect, the sending HARQ information and/or second HARQ information on the PUSCH includes: and the state value of the DAI _ UL is a second preset value, and the terminal equipment sends the first HARQ information and/or the second HARQ information on the PUSCH according to a semi-static codebook rule.

It should be understood that the first preset value and the second preset value can be any integer greater than or equal to 0, but the first preset value and the second preset value should be different values.

With reference to the first aspect, in some implementations of the first aspect, before the terminal device detects the first DCI in the PDCCH, the method further includes: the terminal device receives indication information from the network device, where the indication information is used to indicate multiplexing of Uplink Control Information (UCI) of two different priorities and a feedback type of the HARQ information is a semi-static codebook.

In a second aspect, another method for indicating feedback information is provided, where the method includes: the method comprises the steps that terminal equipment detects first Downlink Control Information (DCI) in a Physical Downlink Control Channel (PDCCH), wherein the first DCI is used for scheduling downlink data transmission borne on a PDSCH with a first priority and/or scheduling downlink data transmission borne on a PDSCH with a second priority, and the second priority is higher than the first priority; the terminal equipment receives second DCI from the network equipment, wherein the second DCI is used for scheduling a Physical Uplink Shared Channel (PUSCH) with the second priority, and the second DCI comprises downlink allocation indication information (DAI _ UL); the terminal equipment sends first hybrid automatic repeat request (HARQ) information and/or second HARQ information on the PUSCH according to the detection condition of the first DCI and the DAI _ UL, wherein the priority of the second HARQ information is higher than that of the first HARQ information; and when the value of the DAI _ UL is a third preset value and the payload size of the first HARQ information is 0, the PUSCH comprises the first HARQ information with the payload size of the third preset value.

In the embodiment of the application, the terminal device sends the first HARQ information and/or the second HARQ information of the dynamic type to the network device according to the detection condition of the first DCI and the value of DCI _ UL in the second DCI, which effectively avoids that the terminal device sends the HARQ information of the error load size to the network device due to missing detection of the first DCI used for scheduling downlink data transmission carried on the PDSCH of the second priority when the value of DCI _ UL is a third preset value. The method is favorable for improving the reliability of the fed-back HARQ information and the reliability of the uplink data transmission of the second priority level by redefining the DCI _ UL value and the load size rule of the HARQ information.

It should be understood that the third preset value may be 4 or other integers greater than or equal to 0, which is not limited in the present application.

With reference to the second aspect, in certain implementations of the second aspect, the sending the first HARQ information and/or the second HARQ information on the PUSCH includes: when the value of the DAI _ UL is a third preset value and the size of the load of the second HARQ information is 0, the terminal device does not send the second HARQ information on the PUSCH; or, when the value of DAI _ UL is a third preset value and the payload size of the second HARQ information is 0, the terminal device sends the second HARQ information with the payload size of the third preset value on the PUSCH.

With reference to the second aspect, in some implementations of the second aspect, before the terminal device detects the first DCI in the physical downlink control channel PDCCH, the method further includes: and the terminal equipment receives indication information from the network equipment, wherein the indication information is used for indicating the multiplexing of uplink control information UCI with two different priorities and the feedback type of the HARQ information is a dynamic codebook.

In summary, in the embodiment of the present application, by specifying a rule for determining the load size of HARQ information fed back by a terminal device, the terminal device determines the load size of the HARQ information that needs to be fed back without depending on whether a first DCI (i.e., a low-priority DCI) used for scheduling downlink data transmission carried on a PDSCH of a second priority is accurately received, so that the problem that payload size is not fuzzy is avoided for the load size of the HARQ information, and the reliability of uplink data transmission of the second priority is further ensured when the HARQ information is transmitted on a PUSCH of the second priority.

In a third aspect, a method for indicating feedback information is provided, where the method includes: the method comprises the steps that network equipment sends first Downlink Control Information (DCI) to terminal equipment on a Physical Downlink Control Channel (PDCCH), wherein the first DCI is used for scheduling downlink data transmission borne on a PDSCH with a first priority and/or scheduling downlink data transmission borne on a PDSCH with a second priority, and the second priority is higher than the first priority; the network equipment sends a second DCI to the terminal equipment, wherein the second DCI is used for scheduling a Physical Uplink Shared Channel (PUSCH) with the second priority, and the second DCI comprises downlink allocation indication information (DAI _ UL); the network equipment receives first HARQ information and/or second HARQ information from the terminal equipment on the PUSCH, wherein the priority of the second HARQ information is higher than that of the first HARQ information; when the state value of the DAI _ UL is a first preset value and the load size of the first HARQ information is 1, the PUSCH does not include the first HARQ information; or, when the state value of the DAI _ UL is a first preset value and the payload size of the first HARQ information is 0, the PUSCH includes the first HARQ information with a fixed payload size, and the fixed payload is determined according to a predefined rule.

With reference to the third aspect, in certain implementations of the third aspect, the receiving, by the network device, the first HARQ information and/or the second HARQ information from the terminal device on the PUSCH includes: and when the state value of the DAI _ UL is a first preset value and the load size of the second HARQ information is 1, the network equipment receives the second HARQ information with the load size of 1 on the PUSCH.

With reference to the third aspect, in certain implementations of the third aspect, the receiving, by the network device, the first HARQ information and/or the second HARQ information from the terminal device on the PUSCH includes: and the state value of the DAI _ UL is a second preset value, and the network equipment receives the first HARQ information and the second HARQ information on the PUSCH according to a semi-static codebook rule.

With reference to the third aspect, in some implementation manners of the third aspect, before the network device sends the first downlink control information DCI to the terminal device on a physical downlink control channel PDCCH, the method further includes: and the network equipment sends indication information to the terminal equipment, wherein the indication information is used for indicating the multiplexing of uplink control information UCI of two different priorities and the feedback type of the HARQ information is a semi-static codebook.

In a fourth aspect, a method for indicating feedback information is provided, where the method includes: the method comprises the steps that network equipment sends first Downlink Control Information (DCI) to terminal equipment on a Physical Downlink Control Channel (PDCCH), wherein the first DCI is used for scheduling downlink data transmission borne on a PDSCH with a first priority and/or scheduling downlink data transmission borne on a PDSCH with a second priority, and the second priority is higher than the first priority; the network equipment sends a second DCI to the terminal equipment, wherein the second DCI is used for scheduling a Physical Uplink Shared Channel (PUSCH) with the second priority, and the second DCI comprises downlink allocation indication information (DAI _ UL); the network equipment receives first HARQ information and/or second HARQ information from the terminal equipment on the PUSCH, wherein the priority of the second HARQ information is higher than that of the first HARQ information; and when the value of the DAI _ UL is a third preset value and the payload size of the first HARQ information is 0, the PUSCH comprises the first HARQ information with the payload size of the third preset value.

With reference to the fourth aspect, in some implementations of the fourth aspect, the receiving, by the network device, the first HARQ information and/or the second HARQ information from the terminal device on the PUSCH includes: and when the value of the DAI _ UL is a third preset value and the load size of the second HARQ information is 0, the network equipment receives the second HARQ information with the load size of the third preset value.

With reference to the fourth aspect, in some implementations of the fourth aspect, before the network device sends the first downlink control information DCI to the terminal device on a physical downlink control channel PDCCH, the method further includes: and the network equipment sends indication information to the terminal equipment, wherein the indication information is used for indicating the multiplexing of uplink control information UCI of two different priorities and the feedback type of the HARQ information is a dynamic codebook.

In a fifth aspect, a communication device is provided for performing the method in any one of the possible implementation manners of the first aspect. In particular, the communication device comprises means for performing the method of any one of the possible implementations of the first aspect described above.

In a sixth aspect, another communication device is provided for performing the method of any one of the possible implementations of the second aspect. In particular, the communication device comprises means for performing the method of any of the possible implementations of the second aspect described above.

In a seventh aspect, a further communication device is provided to perform the method in any one of the possible implementation manners of the third aspect. In particular, the communication device comprises means for performing the method of any of the possible implementations of the third aspect described above.

In an eighth aspect, a further communication device is provided for performing the method of any one of the possible implementations of the fourth aspect. In particular, the communication device comprises means for performing the method of any of the possible implementations of the fourth aspect described above.

In one design, the communication apparatus provided in the fifth aspect to the eighth aspect may include a module that performs one-to-one correspondence of the method/operation/step/action described in the foregoing aspects, where the module may be a hardware circuit, a software circuit, or a combination of a hardware circuit and a software circuit.

In another design, the communication device is a communication chip, and the communication chip may include an input circuit or interface for transmitting information or data and an output circuit or interface for receiving information or data.

In another design, the communication is a communication device that may include a transmitter to transmit information or data and a receiver to receive information or data.

In a ninth aspect, there is provided a processor comprising: input circuit, output circuit and processing circuit. The processing circuit is configured to receive a signal via the input circuit and transmit a signal via the output circuit, such that the processor performs the method of any one of the possible implementations of the first aspect.

In a specific implementation process, the processor may be a chip, the input circuit may be an input pin, the output circuit may be an output pin, and the processing circuit may be a transistor, a gate circuit, a flip-flop, various logic circuits, and the like. The input signal received by the input circuit may be received and input by, for example, but not limited to, a receiver, the signal output by the output circuit may be, for example, but not limited to, output to and transmitted by a transmitter, and the input circuit and the output circuit may be the same circuit that functions as the input circuit and the output circuit, respectively, at different times. The embodiment of the present application does not limit the specific implementation manner of the processor and various circuits.

In a tenth aspect, a communications apparatus is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program from the memory so that the device executes the method in any one of the possible implementation modes of any one of the aspects.

Optionally, there are one or more processors and one or more memories.

Alternatively, the memory may be integrated with the processor, or provided separately from the processor.

In a specific implementation process, the memory may be a non-transient memory, such as a Read Only Memory (ROM), which may be integrated on the same chip as the processor, or may be separately disposed on different chips.

The communication device in the tenth aspect may be a chip, the processor may be implemented by hardware or may be implemented by software, and when implemented by hardware, the processor may be a logic circuit, an integrated circuit, or the like; when implemented in software, the processor may be a general-purpose processor implemented by reading software code stored in a memory, which may be integrated with the processor, located external to the processor, or stand-alone.

In an eleventh aspect, there is provided a computer program product comprising: computer program (also called code, or instructions), which when executed, causes a computer to perform the method of any one of the possible implementations of any one of the above aspects.

In a twelfth aspect, a computer-readable storage medium is provided, which stores a computer program (which may also be referred to as code, or instructions) that, when executed on a computer, causes the computer to perform the method of any of the possible implementations of any of the above aspects.

In a thirteenth aspect, there is provided a chip system, the chip system comprising a processor for implementing the method according to the first aspect or any one of the possible implementations of the first aspect, or for implementing the method according to any one of the possible implementations of the first aspect.

In one possible design, the system-on-chip further includes a memory to store the program instructions. The chip system may be formed by a chip, and may also include a chip and other discrete devices.

In a fourteenth aspect, there is provided a communication system comprising means for implementing the method of the first aspect or any one of the possible implementations of the first aspect, and means for implementing the method of the third aspect or any one of the possible implementations of the third aspect; or, comprising means for implementing the method of the second aspect or any possible implementation of the second aspect, and means for implementing the method of the fourth aspect or any possible implementation of the fourth aspect.

Drawings

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

fig. 2 is a schematic diagram of a feedback manner of HARQ information;

FIG. 3 is a schematic diagram of a feedback manner of a semi-static codebook;

FIG. 4 is a diagram illustrating a feedback manner of a dynamic codebook;

fig. 5 is a schematic flow chart of an indication method of feedback information provided by an embodiment of the present application;

fig. 6 is a schematic block diagram of a communication device provided in an embodiment of the present application;

fig. 7 is a schematic block diagram of another communication device provided in an embodiment of the present application.

Detailed Description

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

The technical scheme provided by the application can be applied to various communication systems, such as: a Long Term Evolution (LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD) system, a Universal Mobile Telecommunications System (UMTS), a fifth generation (5G) mobile telecommunications system, a New Radio (NR) system or other evolved telecommunications system, and a next generation mobile telecommunications system of a 5G telecommunications system, etc.

For the understanding of the embodiments of the present application, a detailed description will be given of a communication system suitable for the embodiments of the present application with reference to fig. 1.

Fig. 1 is a schematic diagram of a communication system 100 provided in an embodiment of the present application. As shown in fig. 1, the communication system 100 includes at least two communication devices, for example, a network device 110 and at least one terminal device 120, wherein data communication can be performed between the network device 110 and the at least one terminal device 120 through a wireless connection. Specifically, the network device 110 may send downlink data to the terminal device 120; terminal device 120 may also send upstream data to network device 110.

The terminal device in the embodiment of the present application may also be referred to as: user Equipment (UE), mobile Station (MS), mobile Terminal (MT), access terminal, subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or user device, etc.

The terminal device may be a device providing voice/data connectivity to a user, e.g. a handheld device, a vehicle mounted device, etc. with wireless connection capability. Currently, some examples of terminal devices include: a mobile phone (mobile phone), a tablet computer, a notebook computer, a palm computer, a Mobile Internet Device (MID), a wearable device, a Virtual Reality (VR) device, an Augmented Reality (AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned driving (self driving), a wireless terminal in remote surgery (remote medical supply), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (smart), a wireless terminal in city (smart city), a wireless terminal in smart home (smart home), a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol), SIP) phone, wireless Local Loop (WLL) station, personal Digital Assistant (PDA), handheld device with wireless communication capability, computing device or other processing device connected to a wireless modem, in-vehicle device, wearable device, terminal device in a 5G network or terminal device in a future evolved Public Land Mobile Network (PLMN), etc., which are not limited in this application.

By way of example and not limitation, in the present application, the terminal device may be a terminal device in an internet of things (IoT) system. The internet of things is an important component of future information technology development, and is mainly technically characterized in that articles are connected with a network through a communication technology, so that an intelligent network of man-machine interconnection and article interconnection is realized. Illustratively, the terminal device in the embodiments of the present application may be a wearable device. Wearable equipment can also be called wearable intelligent equipment, is the general term of equipment that uses wearable technique to carry out intelligent design, develop can dress to daily wearing, such as glasses, gloves, wrist-watch, dress and shoes. A wearable device is a portable device that can be worn directly on the body, or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also can realize powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device has full functions and large size, and can realize complete or partial functions without depending on a smart phone, for example: smart watches or smart glasses and the like, and only focus on a certain type of application functions, and need to be used in cooperation with other devices such as smart phones, such as various smart bracelets for physical sign monitoring, smart jewelry and the like.

By way of example and not limitation, in the embodiment of the present application, the terminal device may also be a terminal device in Machine Type Communication (MTC). The terminal device may be an in-vehicle module, an in-vehicle component, an in-vehicle chip, an in-vehicle unit, or the like, which is built in the vehicle as one or more components or units, and the vehicle may implement the method provided by the present application by the built-in-vehicle module, the in-vehicle component, the in-vehicle chip, or the in-vehicle unit. Therefore, the embodiments of the present application may also be applied to vehicle networking, such as vehicle to outside (V2X), long term evolution (LTE-V) technology for vehicle to vehicle communication, vehicle to vehicle (V2V) technology, and the like.

The network device related to the present application may be a device that communicates with a terminal device, may also be referred to as an access network device or a radio access network device, and may be a Transmission Reception Point (TRP), an evolved NodeB (eNB) or an eNodeB in an LTE system, a home NodeB (home Node B, HNB), a baseband unit (BBU), a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or may be a relay station, an access point, a vehicle-mounted device, a wearable device, a network device in a 5G network, or a network device in a PLMN network that evolves in the future, or may be an Access Point (AP) in a WLAN, or a gbb in an NR system, where the network device may also be a city base station, a micro base station, a pico base station, a femto base station, or the like, and the present application is not limited thereto.

In one network configuration, a network device may include a Centralized Unit (CU) node, or a Distributed Unit (DU) node, or a Radio Access Network (RAN) device including a CU node and a DU node, or a RAN device including a control plane CU node (CU-CP node) and a user plane CU node (CU-UP node) and a DU node.

The network device provides a service for a cell, and a terminal device communicates with the cell through a transmission resource (e.g., a frequency domain resource, or a spectrum resource) allocated by the network device, where the cell may belong to a macro base station (e.g., a macro eNB or a macro gNB), or may belong to a base station corresponding to a small cell (small cell), where the small cell may include: urban cell (metro cell), micro cell (microcell), pico cell (pico cell), femto cell (femto cell), etc., and these small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-rate data transmission service.

It should be understood that fig. 1 is a simplified schematic diagram that is shown only for ease of understanding, and that other devices, not shown in fig. 1, may also be included in the communication system 100.

Illustratively, the 5G communication system has higher requirements in terms of transmission rate, delay, power consumption, etc. than the previous generation mobile communication systems. The International Telecommunications Union (ITU) defines enhanced mobile broadband (enhanced m, object broadband, eMBB), massive machine type communication (mtc) and ultra-reliable low-latency communication (URLLC) as three large future-5G services, which indicate directions for the establishment of the 5G standard.

URLLC, as one of three 5G typical services, has main application scenarios including: unmanned, telemedicine, etc., which place more stringent demands on reliability and latency. The requirements of URLLC services include: the data transmission reliability reaches 99.999%, the transmission delay is lower than 1 millisecond (ms), and the instruction overhead is reduced as far as possible under the condition of meeting the requirements of high reliability and low delay.

Hybrid automatic repeat request (HARQ) is an efficient transmission mechanism, and on one hand, reliability of downlink data transmission can be greatly improved through retransmission. On the other hand, the terminal equipment indicates whether downlink data is received or not by feeding back the ACK or NACK message, and retransmission is needed only when the network equipment receives the NACK feedback message, so that the whole resource consumption of data transmission is reduced.

In the Release (R) 16 protocol, URLLC traffic is defined as high priority traffic, and eMBB traffic is defined as low priority traffic. Meanwhile, when time domain collision occurs in the transmission of the high-priority and low-priority services, the low-priority services are discarded, so that the high-priority services are not affected.

R17 proposes that when time domain conflicts occur between services with different priorities, multiplexing under a specific scenario needs to be considered. For example, high priority HARQ information and low priority HARQ information may be multiplexed. In the conference of 3gpp ran1#105, how to solve the problem that the terminal device fails to detect the Downlink Control Information (DCI) of low priority when the HARQ Information of high priority and the HARQ Information of low priority are multiplexed is discussed. This is because the high priority HARQ information is multiplexed with the low priority HARQ information, and the payload size of the low priority HARQ information affects the decoding of the high priority data when transmitted on the high priority PUSCH.

Currently, when the terminal device feeds back the HARQ information, it needs to feed back on the uplink timeslot. I.e. multiple HARQ information are fed back together on the same uplink timeslot. The terminal device may simultaneously feed back whether data transmitted by the network device through multiple semi-persistent scheduling (SPS) or DCI scheduling is received correctly. Therefore, it is necessary to define a combination ordering method of a plurality of HARQ information fed back together, and the combined HARQ information is referred to as an HARQ codebook in the present application.

Fig. 2 shows a feedback manner of HARQ information. As shown in fig. 2, the uplink downlink shared channel includes three downlink (D) time slots (time slot n to time slot n + 1) and one uplink (U) time slot (time slot n + 3), and each downlink time slot includes two Physical Downlink Shared Channels (PDSCHs), and downlink data on each PDSCH has corresponding HARQ information. Each uplink slot includes two Physical Uplink Control Channels (PUCCHs), and each PUCCH corresponds to three HARQ information, that is, two HARQ codebooks are fed back on the last uplink slot as shown in fig. 3, and two resources of PUCCH1 and PUCCH2 are used respectively. The HARQ codebook carried on the PUCCH1 includes feedback of HARQ information corresponding to downlink data of the PDSCH1 to PDSCH3, and the HARQ codebook carried on the PUCCH2 includes feedback of HARQ information of the PDSCH4 to PDSCH 6. Which corresponding PDSCHs the HARQ codebook comprises is determined by the pre-configured set of downlink time units (i.e., the set of K values in fig. 2). For example, K =6 indicates that HARQ information corresponding to data carried on the current channel is transmitted in the 6 th time unit after the current channel.

It should be understood that the time units described above may be time slots, or sub-time slots.

The HARQ codebook may be divided into a semi-static codebook and a dynamic codebook. It should be understood that the type of HARQ codebook may be configured to the current cell through higher layer signaling. For example, the higher layer signaling may be Radio Resource Control (RRC).

The semi-static codebook and the dynamic codebook are explained in detail below with reference to fig. 3 and 4.

The semi-static codebook refers to that in the current time slot, all HARQ information possibly transmitted in the current time slot is fed back. This information includes HARQ information corresponding to downlink data transmitted on the PDSCH (actual ACK or NACK is fed back), and also includes HARQ information that has a PDSCH transmission opportunity but does not actually transmit data on the PDSCH (NACK is fed back). Finally, the HARQ information in the above two cases may be sorted according to the rule shown in fig. 2 to form a HARQ codebook.

Fig. 3 shows a feedback manner of the semi-static codebook. As shown in fig. 3, each carrier carries four time slots, where a white position indicates that there is PDSCH transmission, and a shaded position indicates that there is no PDSCH transmission, and according to the rule of the semi-static codebook, the HARQ codebook actually required to be fed back has 8 bits (bit) in total. Specifically, the arrangement order is shown in fig. 3, where N in the shaded position indicates that NACK corresponding to the PDSCH is not transmitted, and a/N in the blank position indicates that real ACK or NACK corresponding to the PDSCH is transmitted.

The dynamic codebook refers to that only HARQ information corresponding to the PDSCH is fed back and sent in the current time slot.

Fig. 4 shows a feedback manner of the dynamic codebook. As shown in fig. 4, each carrier carries four slots, a white position indicates PDSCH transmission, a cross-hatched position indicates no PDSCH transmission, and a cross-hatched position indicates that the network device sends a DCI, and schedules PDSCH transmission in this slot, but the terminal device does not receive the DCI, and therefore, the terminal device does not know that PDSCH transmission is performed at this position, that is, there is no corresponding HARQ information.

In the conventional embodiment, when the network device schedules the PDSCH, the network device adds a counting downlink assignment index (C-DAI) and a total downlink assignment index (T-DAI) to the DCI in response to the terminal device missing the DCI. Wherein, C-DAI is used for indicating that the current DCI is the second DCI in the HARQ codebook, and T-DAI is used for indicating how many DCIs are transmitted in total by the current time slot. As shown in FIG. 4, the two numbers in each position represent the value of (C-DAI, T-DAI). When the terminal device misses the DCI corresponding to the grid shadow position, the received 4 DCIs indicate (1, 1), (2, 3) (4, 5), and (5, 5), respectively. The terminal equipment can determine that the second DCI is missed according to the four

values

1,2,4 and 5 of the C-DAI; or the terminal device may determine that there should be one DCI indicating (3, 3) at this time according to T-DAI =3 of the second slot. Based on the two modes, the terminal device may complete HARQ information (NACK) at the position when feeding back the HARQ codebook.

Illustratively, the C-DAI and T-DAI occupy 2 bits in the DCI, respectively, and since 2 bits can only represent 4 values, modulo 4 processing, i.e., 00, 01, 10, 11 cycle counts, is assumed in some embodiments. And the value of DAI is specified in the existing protocol: 00 01, 10, 11, respectively, correspond to actual values of 1,2,3,4. For example, the binary expression of (2, 3) is (01, 10).

It should be understood that the HARQ information is generally fed back by PUCCH, and may also be fed back on PUSCH. When feedback is performed on the PUSCH, a DAI value may exist in the UL grant for scheduling the PUSCH, and is recorded as a downlink assignment indication DAI _ UL.

In some embodiments, for a semi-static codebook, the DAI _ UL takes values of only 0 and 1 to indicate whether the HARQ codebook is transmitted on PUSCH. Wherein DAI _ UL =1 indicates that the HARQ codebook is transmitted according to the rule shown in fig. 2; two situations exist when DAI _ UL =0, one is that the terminal device determines that the HARQ information required to be fed back is 1bit according to the received downlink data, and then the terminal device does not send a complete codebook according to the method shown in fig. 3, but only sends 1bit HARQ information. And the other is that the terminal equipment does not send the HARQ information when determining that the HARQ information needing to be fed back is not 1bit according to the received downlink data.

In some embodiments, for a dynamic codebook, the value of DAI _ UL represents the payload size of the codebook fed back at PUSCH. The existing protocol provides that the value of DAI _ UL is set to 4, the terminal equipment determines that the HARQ information needing to be fed back is 0bit according to the received downlink data, and then the HARQ information is not sent; or, the terminal equipment determines that the HARQ information needing to be fed back is greater than 0bit and less than or equal to 4bit according to the received downlink data, and then sends the HARQ information with 4 bit; or, the terminal device determines that the HARQ information to be fed back is greater than 4 bits according to the received downlink data, and then sends HARQ information of N × 4 bits, where N is an integer greater than 1.

At present, the transmission reliability requirement for the control information and the data information of high priority services such as URLLC is high, namely, the block error rate is required to reach 1e-5, while the transmission reliability requirement for the control information and the data information of low priority services such as eMBB is low, namely, the block error rate can be 1e-1 or 1e-2. This results in that the probability of error of the control information and the data information of low priority is much higher than that of the control information and the data information of high priority in the scenario of the mixed transmission of high and low priorities. Therefore, in a high-low priority multiplexing scenario, attention needs to be paid to whether the high-priority information is affected when a transmission error occurs in the low-priority control information or data information.

It is obvious that when a transmission error occurs in the control information or the data information of the low priority, it is highly likely to affect the information of the high priority. For example, if the low-priority DCI is erroneous or the terminal device does not receive the low-priority DCI, the terminal device may miss the HARQ information to be fed back, thereby causing a payload size (payload size) error of the low-priority HARQ codebook. According to the existing rule, under the situation that a high-priority HARQ codebook and a low-priority HARQ codebook are simultaneously multiplexed on a high-priority PUSCH, high-priority HARQ information is mapped on the PUSCH first, low-priority HARQ information is mapped continuously after an end symbol of the high-priority HARQ information, and high-priority data is mapped continuously after the end symbol of the low-priority HARQ information. Therefore, when the payload size error occurs in the HARQ information, the subsequent mapping may be misaligned to a great extent, so that the subsequent mapped data cannot be successfully decoded on the network device side.

Exemplarily, in a scenario where high and low priorities are multiplexed on a high priority PUSCH, for a semi-static codebook, whether the HARQ information of a low priority has its own DAI _ UL or shares 1 DAI _ UL with the HARQ information of a high priority, when DAI _ UL =0, whether the terminal device feeds back the HARQ of a low priority may depend on whether the DCI of a low priority is missed.

Exemplarily, in a scenario where high-low priority is multiplexed on a high-priority PUSCH, for a dynamic codebook, if DAI _ UL is used to indicate a payload size of a high-priority HARQ and a payload size of a low-priority HARQ at the same time, when DAI _ UL value =4, it is determined that a terminal device needs to feed back 1bit of low-priority HARQ information according to low-priority DCI sent by a network device. When the terminal equipment fails to detect the DCI with the low priority, the HARQ information with the low priority is not sent: and when the terminal equipment does not miss detection of the DCI with the low priority, transmitting the HARQ information with the load size of 4 and the low priority.

In summary, in a scenario where high and low priorities are multiplexed on a high-priority PUSCH, when a terminal device transmits control information and uplink data in a rate matching manner, a HARQ information payload with a low priority has an error in size, which may cause that subsequently mapped data cannot be successfully decoded.

In view of this, the present application provides a method for indicating feedback information and a communication apparatus. The network device multiplexes the UCI with high priority and the UCI with low priority on the PUSCH of the same rank through configuration signaling, and for the semi-static codebook, the DCI indicates that the value of DAI _ UL of the HARQ with high priority is a second preset value (for example, DAI _ UL = 0), and then the HARQ information with low priority is not transmitted uniformly, or the HARQ information with low priority whose payload size is 1 is transmitted uniformly. For the dynamic codebook, the high-priority HARQ and the low-priority HARQ share one DAI _ UL, and if the value of the DAI _ UL is the first preset value, the HARQ information with the load size being the first preset value is sent, so that the problem that the subsequently mapped high-priority uplink data cannot be successfully decoded due to the load size error of the low-priority HARQ information when the low-priority HARQ information is in rate-match is effectively avoided, and the reliability of the high-priority uplink data transmission is favorably improved.

Before describing the indication method of the feedback information provided in the present application, the following description is made.

First, in the embodiments shown herein, terms and english abbreviations such as HARQ, PDCCH or PDSCH are exemplary examples given for convenience of description, and should not constitute any limitation to the present application. This application does not exclude the possibility of defining other terms in existing or future protocols that may fulfil the same or similar functions.

Second, the first, second and various numerical numbering in the embodiments shown below are merely for convenience of description and are not intended to limit the scope of the embodiments of the present application. For example, different DCIs are distinguished. In the embodiments of the present application, ordinal numbers such as "first", "second", and the like are used to distinguish a plurality of objects, and are not used to limit the order, sequence, priority, or importance of the plurality of objects. For example, the first DCI and the second DCI are only for differentiating different priorities, and do not indicate that the importance levels of the two DCIs are different.

Third, the "protocol" referred to in the embodiments of the present application may refer to a standard protocol in the communication field, and may include, for example, an LTE protocol, an NR protocol, and a related protocol applied in a future communication system, which is not limited in the present application.

Fourth, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, and c, may represent: a, or b, or c, or a and b, or a and c, or b and c, or a, b and c, wherein a, b and c can be single or multiple.

The following describes in detail a method for indicating feedback information provided in the embodiment of the present application with reference to fig. 5. It should be understood that the method may be applied to the communication system 100 shown in fig. 1, but the embodiment of the present application is not limited thereto.

Fig. 5 illustrates an indication method 500 of feedback information provided in an embodiment of the present application. As shown in fig. 5, the method 500 may include the steps of:

s501, the network device sends indication information to the terminal device, where the indication information is used to indicate multiplexing of Uplink Control Information (UCI) of two different priorities and a feedback type of HARQ information. Accordingly, the terminal device receives the indication information.

The indication information may be carried in Radio Resource Control (RRC) signaling or other high layer signaling, which is not limited in this application.

The feedback types of the HARQ information include: semi-static codebooks and dynamic codebooks.

The HARQ information in the embodiment of the present application includes ACK information and/or NACK message.

S502, the network device sends a first DCI to the terminal device on the PDCCH, where the first DCI is used to schedule downlink data transmission carried on the PDSCH with the first priority and/or is used to schedule downlink data transmission carried on the PDSCH with the second priority, and the second priority is higher than the first priority. Accordingly, the terminal device detects the first DCI from the network device in the PDCCH.

S503, the network device sends a second DCI to the terminal device, where the second DCI is used to schedule a PUSCH with a second priority, and the second DCI includes downlink assignment indication information DAI _ UL. Accordingly, the terminal device receives the second DCI.

It should be understood that the second DCI may include one DAI _ UL or may include two DAI _ ULs at the same time, and the second DCI is not limited thereto.

And S504, the terminal equipment sends first HARQ information and/or second HARQ information on a PUSCH according to the detection condition of the first DCI and the DAI _ UL, wherein the priority of the second HARQ information is higher than that of the first HARQ information. Accordingly, the network device receives the first HARQ information and/or the second HARQ information on the PUSCH.

It should be understood that each first DCI transmitted by the network device may have HARQ information with a corresponding payload size of 1. The first DCI for scheduling downlink data transmission carried on the PDSCH of the first priority corresponds to the first HARQ information, and the first DCI for scheduling downlink data transmission carried on the PDSCH of the second priority corresponds to the second HARQ information.

The first priority in the embodiments of the present application may be referred to as a low priority, and the second priority may be referred to as a high priority. For example, the PDSCH of the first priority may be referred to as a low-priority PDSCH, the first HARQ information may be referred to as low-priority HARQ information, the PDSCH of the second priority may be referred to as a high-priority PDSCH, and the second HARQ information may be referred to as high-priority HARQ information.

Further, when the indication information indicates that the feedback type of the HARQ information is a semi-static codebook, the terminal device may send the first HARQ information and/or the second HARQ information on the PUSCH according to the detection condition of the first DCI and the DAI _ UL, where the following four conditions are included:

in a case, when the state value of the DAI _ UL is a first preset value and the payload size of the first HARQ information is 1 (that is, the terminal device detects 1 first DCI for scheduling downlink data transmission carried on the PDSCH with the first priority in the PDCCH), the terminal device does not send the first HARQ information on the PUSCH.

In case two, when the DAI _ UL status value is a first preset value and the payload size of the first HARQ information is 0 (that is, the terminal device does not detect the first DCI used for scheduling downlink data transmission carried on the first priority PDSCH in the PDCCH), the terminal device sends the first HARQ information with a fixed payload size on the PUSCH, where the fixed payload is determined according to a predefined rule. Accordingly, the network device receives the first HARQ information of the fixed payload size.

It should be understood that, when the state of DAI _ UL is taken as a first preset value and the payload size of the first HARQ information is not 0 or 1, the terminal device does not send the first HARQ information on the PUSCH.

In case three, when the state value of the DAI _ UL is the first preset value and the payload size of the second HARQ information is 1 (that is, the terminal device detects 1 first DCI used for scheduling downlink data transmission carried on the second priority PDSCH in the PDCCH), the terminal device does not send the second HARQ information on the PUSCH or the terminal device sends the second HARQ information with the payload size of 1 on the PUSCH. Accordingly, the network device receives the second HARQ information with a payload size of 1.

It should be understood that under the condition of the third case, which of the two transmission manners the terminal device specifically employs may be determined by RRC signaling, other signaling, or a predefined manner.

It should also be understood that, when the state value of DAI _ UL is the first preset value and the payload size of the second HARQ information is not 1, the terminal device does not send the second HARQ information on the PUSCH.

And in case four, when the state value of the DAI _ UL is a second preset value, the terminal equipment sends the first HARQ information and/or the second HARQ information on the PUSCH according to the semi-static codebook rule. Accordingly, the network device receives the first HARQ information and/or the second HARQ information.

The sending rule of the semi-static codebook may refer to the related description of fig. 3, and is not described herein again.

It should be understood that, when the indication information indicates that the feedback type of the HARQ information is a semi-static codebook, the second DCI may include one DAI _ UL or may include two DAI _ ULs simultaneously.

Further, when the indication information indicates that the feedback type of the HARQ information is a dynamic codebook, the terminal device sends the first HARQ information and/or the second HARQ information on the PUSCH according to the detection condition of the first DCI and the DAI _ UL, where the following two conditions are included:

in case one, when the value of DAI _ UL is a third preset value and the payload size of the first HARQ information is 0 (that is, the terminal device does not detect the first DCI used for scheduling the downlink data transmission carried on the first priority PDSCH in the PDCCH), the terminal device sends the first HARQ information with the payload size being the third preset value on the PUSCH. Accordingly, the network device receives the first HARQ information.

It should be understood that, when the value of DAI _ UL is a third preset value and the payload size of the first HARQ information is not 0, the terminal device transmits the first HARQ information with the payload size N × the third preset value on the PUSCH, where N is an integer greater than 0.

Exemplarily, if the DAI _ UL has a value of 4 and the payload size of the first HARQ information is X (X is an integer greater than 4 and less than 9), the terminal device transmits the first HARQ information having a payload size of 8 on the PUSCH.

Exemplarily, if the value of DAI _ UL is 4 and the payload size of the first HARQ information is Y (Y is an integer greater than 8 and less than 17), the terminal device transmits the first HARQ information with the payload size of 16 on the PUSCH.

In case two, when the value of DAI _ UL is a third preset value and the payload size of the second HARQ information is 0 (that is, the terminal device does not detect the first DCI used for scheduling the downlink data transmission carried on the PDSCH of the second priority in the PDCCH), the terminal device does not send the second HARQ information on the PUSCH, or the terminal device sends the second HARQ information with the payload size being the third preset value on the PUSCH. Correspondingly, the network equipment receives second HARQ information with the load size of a third preset value.

It should be understood that, when the value of DAI _ UL is the third preset value and the payload size of the second HARQ information is not 0, the terminal device transmits the second HARQ information with the payload size N × the third preset value on the PUSCH.

It should also be understood that, under the condition of the second case, which of the two transmission manners the terminal device specifically employs may be determined by RRC signaling, other signaling, or a predefined manner.

It should be understood that, when the indication information indicates that the feedback type of the HARQ information is a dynamic codebook, the second DCI includes one DAI _ UL.

It should be understood that the first preset value, the second preset value and the third preset value can be any values, and the first preset value and the second preset value should be set to different values.

Illustratively, the first preset value is 0, and the second preset value is 1. When the indication information indicates that the feedback type of the HARQ information is the semi-static codebook, the second DCI includes a DAI _ UL used for the first HARQ information and the second HARQ information at the same time; or, the second DCI includes two DAI _ ULs for the first HARQ information and the second HARQ information, respectively. Whether the second DCI includes one DAI _ UL or two DAI _ ULs, there may be a case where the value of DAI _ UL is 0. In this case, the terminal device further needs to determine the payload size of the HARQ information sent to the network device according to the detected first DCI (used for scheduling downlink data transmission carried on the PDSCH of the second priority), that is, if 1 first DCI (used for scheduling downlink data transmission carried on the PDSCH of the second priority) is detected, the terminal device sends the first HARQ information with the payload size of 1. If no first DCI (for scheduling downlink data transmission carried on the PDSCH of the second priority) is detected, the terminal device transmits no first HARQ information. If the terminal device fails to detect the first DCI, an error may occur in the size of the fed-back first HARQ information payload. Therefore, in the embodiment of the present application, DAI _ UL =0 is defined, and the terminal device sends the first HARQ information with a payload size of 0 or a fixed payload size, thereby effectively avoiding a problem that the successful decoding of the uplink data with the second priority is affected due to an error in the payload size of the fed back first HARQ information caused by missing DCI by the terminal device.

Exemplarily, the third preset value is 4. When the indication information indicates that the feedback type of the HARQ information is a dynamic type, the second DCI includes one DAI _ UL used for the first HARQ information and the second HARQ information at the same time. This DAI _ UL may indicate the payload size of the second HARQ information so that the first HARQ information looks like the indication, or may be a value indicating that the payload of the first HARQ information and the second HARQ information is larger. Therefore, the value of DAI _ UL is 4, which is used to indicate the load size of the HARQ information of the second priority, and when the terminal device misses 1 first DCI (used to schedule downlink data transmission carried on the PDSCH of the first priority), and the network device only sends one first DCI, the DAI _ UL =4 indication is also met (i.e., the first HARQ information is not sent), and when the terminal device maps data on the PUSCH in a rate matching manner, the uplink data that occurs cannot be decoded successfully. Therefore, in the embodiment of the present application, DAI _ UL =4 is defined, and when the terminal device fails to detect all the first DCI from the network device, the terminal device sends the first HARQ information with the payload size of 4, so that the problem that the successful decoding of the second priority uplink data is affected due to the fact that the payload size of the fed-back first HARQ information is wrong because the terminal device fails to detect the DCI is effectively avoided.

It should be understood that the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

The method for indicating feedback information according to the embodiment of the present application is described in detail above with reference to fig. 5, and the communication apparatus according to the embodiment of the present application is described in detail below with reference to fig. 6 and 7.

Fig. 6 illustrates a communication apparatus 600 according to an embodiment of the present application. As shown in fig. 6, the communication apparatus 600 includes: a receiving module 610 and a transmitting module 620.

In one possible implementation, the communication apparatus 600 is a terminal device, or a chip in the terminal device.

In one design, among others, the receiving module 610 is to: detecting first DCI in a PDCCH, wherein the first DCI is used for scheduling downlink data transmission borne on a PDSCH with a first priority and/or is used for scheduling downlink data transmission borne on a PDSCH with a second priority, and the second priority is higher than the first priority; and means for receiving a second DCI from the network device, the second DCI being for scheduling a PUSCH of the second priority, the second DCI comprising a DAI _ UL; a sending module 620, configured to send first hybrid automatic repeat request HARQ information and/or second HARQ information on the PUSCH according to the detection condition of the first DCI and the DAI _ UL, where a priority of the second HARQ information is higher than a priority of the first HARQ information; wherein, when the state value of the DAI _ UL is a first preset value and the load size of the first HARQ information is 1, the PUSCH does not include the first HARQ information; or, when the state value of the DAI _ UL is a first preset value and the payload size of the first HARQ information is 0, the PUSCH includes the first HARQ information with a fixed payload size, and the fixed payload is determined according to a predefined rule.

Optionally, the sending module 620 is further configured to: when the state value of the DAI _ UL is a first preset value and the load size of the second HARQ information is 1, the second HARQ information is not sent on the PUSCH; or, when the state value of the DAI _ UL is a first preset value and the payload size of the second HARQ information is 1, transmitting the second HARQ information with the payload size of 1 on the PUSCH.

Optionally, the sending module 620 is further configured to: and taking the state value of the DAI _ UL as a second preset value, and sending the first HARQ information and/or the second HARQ information on the PUSCH according to a semi-static codebook rule.

Optionally, the receiving module 610 is further configured to: and receiving indication information from the network equipment, wherein the indication information is used for indicating multiplexing of uplink control information UCI of two different priorities and the feedback type of the HARQ information is a semi-static codebook.

In another design, the receiving module 610 is configured to: detecting first DCI in a PDCCH, wherein the first DCI is used for scheduling downlink data transmission borne on a PDSCH with a first priority and/or is used for scheduling downlink data transmission borne on a PDSCH with a second priority, and the second priority is higher than the first priority; and to receive a second DCI from the network device, the second DCI to schedule the PUSCH of the second priority, the second DCI comprising a DAI _ UL; the sending module 620 is configured to: according to the detection condition of the first DCI and the DAI _ UL, sending first hybrid automatic repeat request (HARQ) information and/or second HARQ information on the PUSCH, wherein the priority of the second HARQ information is higher than that of the first HARQ information; and when the value of the DAI _ UL is a third preset value and the payload size of the first HARQ information is 0, the PUSCH comprises the first HARQ information with the payload size of the third preset value.

Optionally, the sending module 620 is further configured to: when the value of the DAI _ UL is a third preset value and the size of the load of the second HARQ information is 0, not sending the second HARQ information on the PUSCH; or, when the value of the DAI _ UL is a third preset value and the payload size of the second HARQ information is 0, transmitting the second HARQ information with the payload size of the third preset value on the PUSCH.

Optionally, the receiving module 610 is further configured to: and receiving indication information from the network equipment, wherein the indication information is used for indicating multiplexing of uplink control information UCI of two different priorities and the feedback type of the HARQ information is a dynamic codebook.

In an optional example, it may be understood by those skilled in the art that the communication apparatus 600 may be embodied as a terminal device in the foregoing embodiment, and the communication apparatus 600 may be configured to execute each process and/or step corresponding to the terminal device in the foregoing method 500, and in order to avoid repetition, details are not described here again.

In another possible implementation manner, the communication apparatus 600 is a network device, or a chip in the network device.

In one design, the sending module 620 is configured to send first DCI to the terminal device on a PDCCH, where the first DCI is used to schedule downlink data transmission carried on a PDSCH of a first priority and/or is used to schedule downlink data transmission carried on a PDSCH of a second priority, and the second priority is higher than the first priority; and sending a second DCI to the terminal device, where the second DCI is used to schedule the PUSCH of the second priority, and the second DCI includes downlink assignment indication information DAI _ UL; the receiving module 610 is configured to: receiving first HARQ information and/or second HARQ information from the terminal equipment on the PUSCH, wherein the priority of the second HARQ information is higher than that of the first HARQ information; wherein, when the state value of the DAI _ UL is a first preset value and the load size of the first HARQ information is 1, the PUSCH does not include the first HARQ information; or, when the state value of the DAI _ UL is a first preset value and the payload size of the first HARQ information is 0, the PUSCH includes the first HARQ information with a fixed payload size, and the fixed payload is determined according to a predefined rule.

Optionally, the receiving module 610 is further configured to: and when the state value of the DAI _ UL is a first preset value and the load size of the second HARQ information is 1, receiving the second HARQ information with the load size of 1 on the PUSCH.

Optionally, the receiving module 610 is further configured to: and taking the state value of the DAI _ UL as a second preset value, and receiving the first HARQ information and the second HARQ information on the PUSCH according to a semi-static codebook rule.

Optionally, the sending module 620 is further configured to: and sending indication information to the terminal equipment, wherein the indication information is used for indicating multiplexing of uplink control information UCI of two different priorities and the feedback type of the HARQ information is a semi-static codebook.

In another design, the sending module 620 is configured to: sending first DCI to terminal equipment on a PDCCH, wherein the first DCI is used for scheduling downlink data transmission borne on a PDSCH with a first priority and/or is used for scheduling downlink data transmission borne on a PDSCH with a second priority, and the second priority is higher than the first priority; and sending a second DCI to the terminal device, where the second DCI is used to schedule the PUSCH of the second priority, and the second DCI includes downlink assignment indication information DAI _ UL; the receiving module 610 is configured to: receiving first HARQ information and/or second HARQ information from the terminal equipment on the PUSCH, wherein the priority of the second HARQ information is higher than that of the first HARQ information; and when the value of the DAI _ UL is a third preset value and the payload size of the first HARQ information is 0, the PUSCH comprises the first HARQ information with the payload size of the third preset value.

Optionally, the receiving module 610 is further configured to: and when the value of the DAI _ UL is a third preset value and the load size of the second HARQ information is 0, receiving the second HARQ information with the load size of the third preset value.

Optionally, the sending module 620 is further configured to: and sending indication information to the terminal equipment, wherein the indication information is used for indicating multiplexing of uplink control information UCI of two different priorities and the feedback type of the HARQ information is a dynamic codebook.

In an optional example, it may be understood by those skilled in the art that the communication apparatus 600 may be embodied as a network device in the foregoing embodiment, and the communication apparatus 600 may be configured to perform each process and/or step corresponding to the network device in the foregoing method 500, and in order to avoid repetition, details are not described here again.

It should be understood that the communication apparatus 600 herein is embodied in the form of functional modules. The term module, as used herein, may refer to an Application Specific Integrated Circuit (ASIC), an electronic circuit, a processor (e.g., a shared, dedicated, or group processor), and memory that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable components that support the described functionality. The communication apparatus 600 may be configured to execute each process and/or step corresponding to the terminal device or the network device in the foregoing method embodiments, and is not described herein again to avoid repetition.

The communication apparatus 600 has a function of implementing corresponding steps executed by the terminal device or the network device in the method 500; the above functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the functions described above.

In the embodiment of the present application, the communication device 600 in fig. 6 may also be a chip or a chip system, for example: system on chip (SoC), the present application is not limited thereto.

Fig. 7 illustrates another communication apparatus 700 provided in an embodiment of the present application. The communication device 700 includes a processor 710, a memory 720, and a transceiver 730. The processor 710, the memory 720 and the transceiver 730 are connected by an internal connection path, the memory 720 is configured to store instructions, and the processor 710 is configured to execute the instructions stored in the memory 720, so that the communication apparatus 700 can perform the method 500 for indicating feedback information provided by the method embodiments.

It should be understood that the functions of the communication apparatus 600 in the foregoing embodiments may be integrated in the communication apparatus 700, the communication apparatus 700 may be configured to execute various steps and/or procedures corresponding to the terminal device in the foregoing method embodiments, or the communication apparatus 700 may also be configured to execute various steps and/or procedures corresponding to the network device in the foregoing method embodiments. Alternatively, the memory 720 may include both read-only memory and random-access memory, and provides instructions and data to the processor. A portion of the memory may also include non-volatile random access memory. For example, the memory may also store device type information. The processor 710 may be configured to execute the instructions stored in the memory, and when the processor executes the instructions, the processor 710 may perform various steps and/or procedures corresponding to the terminal device in the foregoing method embodiments, or the processor 710 may perform various steps and/or procedures corresponding to the network device in the foregoing method embodiments.

It should be understood that, in the embodiment of the present application, the processor 710 may be a Central Processing Unit (CPU), and the processor 710 may also be other general-purpose processors, digital Signal Processors (DSPs), application Specific Integrated Circuits (ASICs), field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. The processor 710 may be a microprocessor or the processor 710 may be any conventional processor or the like.

In implementation, the steps of the method 500 may be performed by instructions in the form of hardware integrated logic circuits or software in a processor. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor. The software modules may be located in ram, flash, rom, prom, or eprom, registers, etc. as is well known in the art. The storage medium is located in a memory, and a processor executes instructions in the memory, in combination with hardware thereof, to perform the steps of the above-described method. To avoid repetition, it is not described in detail here.

Those of ordinary 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 electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. 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 can be clearly understood by those skilled in the art that, for convenience and simplicity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method for indicating feedback information, comprising:

the method comprises the steps that terminal equipment detects first Downlink Control Information (DCI) in a Physical Downlink Control Channel (PDCCH), wherein the first DCI is used for scheduling downlink data transmission borne on a Physical Downlink Shared Channel (PDSCH) with a first priority and/or scheduling downlink data transmission borne on a PDSCH with a second priority, and the second priority is higher than the first priority;

the terminal equipment receives second DCI from network equipment, wherein the second DCI is used for scheduling a Physical Uplink Shared Channel (PUSCH) with the second priority, and the second DCI comprises downlink allocation indication information (DAI _ UL);

the terminal equipment sends first hybrid automatic repeat request (HARQ) information and/or second HARQ information on the PUSCH according to the detection condition of the first DCI and the DAI _ UL, wherein the priority of the second HARQ information is higher than that of the first HARQ information;

wherein, when the state value of the DAI _ UL is a first preset value and the load size of the first HARQ information is 1, the PUSCH does not include the first HARQ information; or, when the state value of the DAI _ UL is a first preset value and the payload size of the first HARQ information is 0, the PUSCH includes the first HARQ information with a fixed payload size, and the fixed payload is determined according to a predefined rule.

2. The method of claim 1, wherein the transmitting the first HARQ information and/or the second HARQ information on the PUSCH comprises:

when the state value of the DAI _ UL is a first preset value and the load size of the second HARQ information is 1, the terminal equipment does not send the second HARQ information on the PUSCH; or,

and when the state value of the DAI _ UL is a first preset value and the load size of the second HARQ information is 1, the terminal equipment sends the second HARQ information with the load size of 1 on the PUSCH.

3. The method according to claim 1 or 2, wherein the transmitting HARQ information and/or second HARQ information on the PUSCH comprises:

and the state value of the DAI _ UL is a second preset value, and the terminal equipment sends the first HARQ information and/or the second HARQ information on the PUSCH according to a semi-static codebook rule.

4. The method according to any of claims 1 to 3, characterized in that before the terminal device detects the first DCI in the physical Downlink control channel, PDCCH, the method further comprises:

and the terminal equipment receives indication information from the network equipment, wherein the indication information is used for indicating multiplexing of uplink control information UCI of two different priorities and the feedback type of the HARQ information is a semi-static codebook.

5. A method for indicating feedback information, comprising:

and when the value of the DAI _ UL is a third preset value and the size of the load of the first HARQ information is 0, the PUSCH comprises the first HARQ information with the size of the load of the third preset value.

6. The method of claim 5, wherein the sending the first HARQ information and/or the second HARQ information on the PUSCH comprises:

when the value of the DAI _ UL is a third preset value and the size of the load of the second HARQ information is 0, the terminal device does not send the second HARQ information on the PUSCH; or,

and when the value of the DAI _ UL is a third preset value and the size of the load of the second HARQ information is 0, the terminal equipment sends the second HARQ information of which the size of the load is the third preset value on a PUSCH.

7. The method according to claim 5 or 6, wherein before the terminal device detects the first DCI in the Physical Downlink Control Channel (PDCCH), the method further comprises:

and the terminal equipment receives indication information from the network equipment, wherein the indication information is used for indicating the multiplexing of uplink control information UCI with two different priorities and the feedback type of the HARQ information is a dynamic codebook.

8. A method for indicating feedback information, comprising:

the method comprises the steps that network equipment sends first Downlink Control Information (DCI) to terminal equipment on a Physical Downlink Control Channel (PDCCH), wherein the first DCI is used for scheduling downlink data transmission borne on a Physical Downlink Shared Channel (PDSCH) with a first priority and/or scheduling downlink data transmission borne on a PDSCH with a second priority, and the second priority is higher than the first priority;

the network equipment sends a second DCI to the terminal equipment, wherein the second DCI is used for scheduling a Physical Uplink Shared Channel (PUSCH) with the second priority, and the second DCI comprises downlink allocation indication information (DAI _ UL);

the network equipment receives first HARQ information and/or second HARQ information from the terminal equipment on the PUSCH, wherein the priority of the second HARQ information is higher than that of the first HARQ information;

9. The method of claim 8, wherein the network device receives the first HARQ information and/or the second HARQ information from the terminal device on the PUSCH comprises:

and when the state value of the DAI _ UL is a first preset value and the load size of the second HARQ information is 1, the network equipment receives the second HARQ information with the load size of 1 on the PUSCH.

10. The method according to claim 8 or 9, wherein the network device receives the first HARQ information and/or the second HARQ information from the terminal device on the PUSCH, comprising:

and the state value of the DAI _ UL is a second preset value, and the network equipment receives the first HARQ information and the second HARQ information on the PUSCH according to a semi-static codebook rule.

11. The method according to any of claims 8 to 10, characterized in that before the network device sends the first downlink control information DCI on a physical downlink control channel PDCCH to the terminal device, the method further comprises:

and the network equipment sends indication information to the terminal equipment, wherein the indication information is used for indicating the multiplexing of uplink control information UCI with two different priorities and the feedback type of the HARQ information is a semi-static codebook.

12. A method for indicating feedback information, comprising:

the network equipment sends first Downlink Control Information (DCI) to terminal equipment on a Physical Downlink Control Channel (PDCCH), wherein the first DCI is used for scheduling downlink data transmission borne on a Physical Downlink Shared Channel (PDSCH) with a first priority and/or scheduling downlink data transmission borne on a PDSCH with a second priority, and the second priority is higher than the first priority;

13. The method of claim 12, wherein the network device receives the first HARQ information and/or the second HARQ information from the terminal device on the PUSCH, and wherein the method comprises:

and when the value of the DAI _ UL is a third preset value and the load size of the second HARQ information is 0, the network equipment receives the second HARQ information with the load size of the third preset value.

14. The method according to claim 12 or 13, wherein before the network device sends the first downlink control information DCI on a physical downlink control channel PDCCH to the terminal device, the method further comprises:

and the network equipment sends indication information to the terminal equipment, wherein the indication information is used for indicating the multiplexing of uplink control information UCI with two different priorities and the feedback type of the HARQ information is a dynamic codebook.

15. A communications apparatus, comprising:

a receiving module, configured to detect first downlink control information DCI in a physical downlink control channel PDCCH, where the first DCI is used to schedule downlink data transmission carried on a first priority physical downlink shared channel PDSCH and/or to schedule downlink data transmission carried on a second priority PDSCH, and the second priority is higher than the first priority; and receiving a second DCI from the network device, where the second DCI is used to schedule the physical uplink shared channel PUSCH of the second priority, and the second DCI includes downlink assignment indication information DAI _ UL;

a sending module, configured to send first hybrid automatic repeat request HARQ information and/or second HARQ information on the PUSCH according to the detection condition of the first DCI and the DAI _ UL, where a priority of the second HARQ information is higher than a priority of the first HARQ information;

when the state value of the DAI _ UL is a first preset value and the load size of the first HARQ information is 1, the PUSCH does not include the first HARQ information; or, when the state value of the DAI _ UL is a first preset value and the payload size of the first HARQ information is 0, the PUSCH includes the first HARQ information with a fixed payload size, and the fixed payload is determined according to a predefined rule.

16. The apparatus of claim 15, wherein the sending module is further configured to:

when the state value of the DAI _ UL is a first preset value and the load size of the second HARQ information is 1, the second HARQ information is not sent on the PUSCH; or,

and when the state value of the DAI _ UL is a first preset value and the load size of the second HARQ information is 1, sending the second HARQ information with the load size of 1 on the PUSCH.

17. The apparatus of claim 15 or 16, wherein the sending module is further configured to:

and taking the state value of the DAI _ UL as a second preset value, and sending the first HARQ information and/or the second HARQ information on the PUSCH according to a semi-static codebook rule.

18. The apparatus of any one of claims 15-17, wherein the receiving module is further configured to:

and receiving indication information from the network equipment, wherein the indication information is used for indicating multiplexing of uplink control information UCI of two different priorities and the feedback type of the HARQ information is a semi-static codebook.

19. A communications apparatus, comprising:

a receiving module, configured to detect first downlink control information DCI in a physical downlink control channel PDCCH, where the first DCI is used to schedule downlink data transmission carried on a first priority PDSCH and/or to schedule downlink data transmission carried on a second priority PDSCH, and the second priority is higher than the first priority; and receiving a second DCI from the network device, where the second DCI is used to schedule the physical uplink shared channel PUSCH of the second priority, and the second DCI includes downlink assignment indication information DAI _ UL;

and when the value of the DAI _ UL is a third preset value and the payload size of the first HARQ information is 0, the PUSCH comprises the first HARQ information with the payload size of the third preset value.

20. The apparatus of claim 19, wherein the sending module is further configured to:

when the value of the DAI _ UL is a third preset value and the load size of the second HARQ information is 0, not sending the second HARQ information on the PUSCH; or,

and when the value of the DAI _ UL is a third preset value and the load size of the second HARQ information is 0, sending the second HARQ information with the load size of the third preset value on a PUSCH.

21. The apparatus of claim 19 or 20, wherein the receiving module is further configured to:

and receiving indication information from the network equipment, wherein the indication information is used for indicating multiplexing of uplink control information UCI of two different priorities and the feedback type of the HARQ information is a dynamic codebook.

22. A communications apparatus, comprising:

a sending module, configured to send first downlink control information DCI to a terminal device on a physical downlink control channel PDCCH, where the first DCI is used to schedule downlink data transmission carried on a first priority physical downlink shared channel PDSCH and/or to schedule downlink data transmission carried on a second priority PDSCH, and the second priority is higher than the first priority; and sending a second DCI to the terminal device, where the second DCI is used to schedule the physical uplink shared channel PUSCH of the second priority, and the second DCI includes downlink assignment indication information DAI _ UL;

a receiving module, configured to receive first HARQ information and/or second HARQ information from the terminal device on the PUSCH, where a priority of the second HARQ information is higher than a priority of the first HARQ information;

wherein, when the state value of the DAI _ UL is a first preset value and the load size of the first HARQ information is 1, the PUSCH does not include the first HARQ information; or, when the state value of the DAI _ UL is a first preset value and the size of the first HARQ information is 0, the PUSCH includes the first HARQ information with a fixed size, and the fixed size is determined according to a predefined rule.

23. The apparatus of claim 22, wherein the receiving module is further configured to:

and when the state value of the DAI _ UL is a first preset value and the load size of the second HARQ information is 1, receiving the second HARQ information with the load size of 1 on the PUSCH.

24. The apparatus of claim 22 or 23, wherein the receiving module is further configured to:

and taking the state value of the DAI _ UL as a second preset value, and receiving the first HARQ information and the second HARQ information on the PUSCH according to a semi-static codebook rule.

25. The apparatus of any one of claims 22-24, wherein the sending module is further configured to:

and sending indication information to the terminal equipment, wherein the indication information is used for indicating multiplexing of uplink control information UCI of two different priorities and the feedback type of the HARQ information is a semi-static codebook.

26. A communications apparatus, comprising:

a sending module, configured to send first downlink control information DCI to a terminal device on a physical downlink control channel PDCCH, where the first DCI is used to schedule downlink data transmission carried on a first priority physical downlink shared channel PDSCH and/or to schedule downlink data transmission carried on a second priority PDSCH, and the second priority is higher than the first priority; and sending a second DCI to the terminal device, where the second DCI is used to schedule the physical uplink shared channel PUSCH of the second priority, and the second DCI includes downlink allocation indication information DAI _ UL;

a receiving module, configured to receive, on the PUSCH, first HARQ information and/or second HARQ information from the terminal device, where a priority of the second HARQ information is higher than a priority of the first HARQ information;

27. The apparatus of claim 26, wherein the receiving module is further configured to:

and when the value of the DAI _ UL is a third preset value and the load size of the second HARQ information is 0, receiving the second HARQ information with the load size of the third preset value.

28. The apparatus of claim 26 or 27, wherein the sending module is further configured to:

and sending indication information to the terminal equipment, wherein the indication information is used for indicating the multiplexing of uplink control information UCI of two different priorities and the feedback type of the HARQ information is a dynamic codebook.

29. A communication system comprising the apparatus of any of claims 15 to 18 and the apparatus of any of claims 22 to 25; alternatively, comprising the apparatus of any one of claims 19 to 21 and the apparatus of any one of claims 26 to 28.

30. A communications apparatus, comprising: a processor coupled with a memory for storing a computer program that, when invoked by the processor, causes the communication device to perform the method of any of claims 1 to 14.