Wireless communication method, terminal device and network device

Abstract

The invention discloses a wireless communication method, terminal equipment and network equipment. The method comprises the following steps: the terminal equipment receives first downlink control information sent by the network equipment; according to the first downlink control information, hybrid automatic request retransmission acknowledgement (HARQ-ACK) information corresponding to at least one uplink HARQ process of the terminal device is determined, N uplink HARQ processes of the terminal device comprise at least one first type of uplink HARQ process, the first type of uplink HARQ process corresponds to a first mode, and N is a positive integer greater than or equal to 1; n is a positive integer.

Description

Wireless communication method, terminal device and network device Technical Field

[0001] The embodiments of the present application relate to the field of communications, and specifically to a wireless communication method, terminal device, and network device. Background Art

[0002] In the New Radio NTN (NR-NTN) system, the hybrid automatic repeat request (HARQ) process is introduced to enable, but the network device does not transmit the hybrid automatic repeat request-acknowledgement (HARQ-ACK) information corresponding to the physical uplink shared channel (PUSCH) to the terminal device. Therefore, when the uplink HARQ process is configured to be disabled, there is no network device to indicate the need for the HARQ-ACK information corresponding to the uplink HARQ process to the terminal device.

[0003] However, in the Internet of Things NTN (IoT-NTN) system, the network device transmits the HARQ-ACK information corresponding to the PUSCH to the terminal device. In this case, when the uplink HARQ process is configured to be disabled, how the network device indicates the HARQ-ACK information corresponding to the uplink HARQ process to the terminal device is an urgent problem to be solved.

[0004] Summary of the Invention

[0005] The present application provides a wireless communication method, terminal device, and network device. The network device can indicate HARQ-ACK information corresponding to at least one uplink HARQ process to the terminal device through downlink control information.

[0006] In a first aspect, a wireless communication method is provided, comprising: a terminal device receiving first downlink control information sent by a network device;

[0007] According to the first downlink control information, determine the hybrid automatic retransmission request acknowledgment HARQ-ACK information corresponding to at least one uplink hybrid automatic retransmission request HARQ process of the terminal device, wherein the N uplink HARQ processes of the terminal device include at least one first type of uplink HARQ process, the first type of uplink HARQ process corresponds to a first mode, and N is a positive integer.

[0008] In a second aspect, a method for wireless communication is provided, including: a network device sends first downlink control information to a terminal device, the first downlink control information is used to determine hybrid automatic repeat request acknowledgment HARQ-ACK information corresponding to at least one uplink hybrid automatic repeat request HARQ process of the terminal device, wherein the N uplink HARQ processes of the terminal device include at least one first type of uplink HARQ process, the first type of uplink HARQ process corresponds to a first mode, and N is a positive integer.

[0009] In a third aspect, a terminal device is provided for executing the method in the above-mentioned first aspect or its various implementations.

[0010] Specifically, the terminal device includes a functional module for executing the method in the above-mentioned first aspect or its various implementation modes.

[0011] In a fourth aspect, a network device is provided for executing the method in the above second aspect or its various implementations.

[0012] Specifically, the network device includes a functional module for executing the method in the above-mentioned second aspect or its various implementation modes.

[0013] In a fifth aspect, a terminal device is provided, comprising a processor and a memory, wherein the memory is configured to store a computer program, and the processor is configured to call and execute the computer program stored in the memory to perform the method of the first aspect or its respective implementations.

[0014] In a sixth aspect, a network device is provided, comprising a processor and a memory, wherein the memory is configured to store a computer program, and the processor is configured to call and execute the computer program stored in the memory to perform the method of the second aspect or its respective implementations.

[0015] In a seventh aspect, a chip is provided for implementing the method in any one of the first to second aspects or their respective implementations.

[0016] Specifically, the chip includes: a processor for calling and running a computer program from a memory, so that a device equipped with the device executes the method in any one of the first to second aspects or their respective implementations.

[0017] In an eighth aspect, a computer-readable storage medium is provided for storing a computer program, which enables a computer to execute the method of any one of the first to second aspects or their respective implementations.

[0018] In a ninth aspect, a computer program product is provided, comprising computer program instructions, wherein the computer program instructions enable a computer to execute the method of any one of the first to second aspects or their respective implementations.

[0019] In a tenth aspect, a computer program is provided, which, when executed on a computer, enables the computer to execute the method of any one of the first to second aspects or their respective implementations.

[0020] Through the above technical solution, the network device can indicate the HARQ-ACK information corresponding to at least one uplink HARQ process to the terminal device through the first downlink control information. Correspondingly, the terminal device can determine the HARQ-ACK information corresponding to the at least one uplink HARQ process based on the first downlink control information sent by the network device. In the case where at least one uplink HARQ process of the terminal device corresponds to the first mode, the terminal device and the network device can have a consistent understanding of the association relationship between the uplink HARQ process to which the HARQ-ACK information is to be fed back and its corresponding HARQ-ACK information. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG1 is a schematic diagram of a communication system architecture provided in an embodiment of the present application.

[0022] FIG2 is a schematic interaction diagram of a wireless communication method provided according to an embodiment of the present application.

[0023] FIG3 is a schematic interaction diagram of another wireless communication method provided according to an embodiment of the present application.

[0024] FIG4 is a schematic block diagram of a terminal device provided according to an embodiment of the present application.

[0025] FIG5 is a schematic block diagram of a network device provided according to an embodiment of the present application.

[0026] FIG6 is a schematic block diagram of a communication device provided according to an embodiment of the present application.

[0027] FIG7 is a schematic block diagram of a chip provided according to an embodiment of the present application.

[0028] FIG8 is a schematic block diagram of a communication system provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0029] The following will describe the technical solutions in the embodiments of this application in conjunction with the drawings in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. With respect to the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0030] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE on unlicensed spectrum (LTE-U) system, NR on unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity) system. Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

[0031] Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communications, but will also support, for example, device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), vehicle-to-vehicle (V2V) communication, or vehicle-to-everything (V2X) communication, etc. The embodiments of the present application can also be applied to these communication systems.

[0032] The communication system in the embodiment of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, and a standalone (SA) networking scenario.

[0033] The communication system in the embodiment of the present application can be applied to an unlicensed spectrum, where the unlicensed spectrum can also be considered as a shared spectrum; or, the communication system in the embodiment of the present application can also be applied to an authorized spectrum, where the authorized spectrum can also be considered as an unshared spectrum.

[0034] The embodiments of the present application can be applied to non-terrestrial networks (NTN) systems, and can also be applied to terrestrial networks (TN) systems.

[0035] As an example, NTN systems include, but are not limited to, New Radio NTN (NR-NTN) systems and Internet of Things NTN (IoT-NTN) systems. The IoT-NTN system may include Narrow Band Internet of Things over NTN (NB-IoT-NTN) systems and Enhanced Machine Type Communication over NTN (eMTC-NTN) systems.

[0036] The embodiments of the present application describe various embodiments in conjunction with network devices and terminal devices, wherein the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

[0037] The terminal device can be a station (STATION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next-generation communication system such as an NR network, or a terminal device in a future evolved Public Land Mobile Network (PLMN) network, etc.

[0038] In an embodiment of the present application, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons and satellites, etc.).

[0039] In the embodiments of the present application, the terminal device may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical, a wireless terminal device in smart grid, a wireless terminal device in transportation safety, a wireless terminal device in smart city, or a wireless terminal device in smart home, etc. The terminal device involved in the embodiments of the present application may also be referred to as a terminal, user equipment (UE), access terminal device, vehicle-mounted terminal, industrial control terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal device, mobile device, UE terminal device, wireless communication device, UE agent or UE device, etc. The terminal device may also be fixed or mobile.

[0040] As an example and not a limitation, in the embodiment of the present application, the terminal device may also be a wearable device. Wearable devices may also be called wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are fully functional, large in size, and can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0041] In an embodiment of the present application, the network device may be a device for communicating with a mobile device. The network device may be an access point (AP) in WLAN, a base station (BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and a network device (gNB) in an NR network, or a network device in a future evolved PLMN network or a network device in an NTN network, etc.

[0042] As an example and not a limitation, in an embodiment of the present application, the network device may have a mobile feature, for example, the network device may be a mobile device. In some embodiments of the present application, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. In some embodiments of the present application, the network device may also be a base station set up in a location such as land or water.

[0043] In an embodiment of the present application, the network device can provide services for a cell, and the terminal device communicates with the network device through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources). The cell can be a cell corresponding to the network device (for example, a base station). The cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0044] For example, Figure 1A is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application. As shown in Figure 1A, the communication system 100 may include a network device 110, which may be a device that communicates with a terminal device 120 (or also referred to as a communication terminal or terminal). The network device 110 may provide communication coverage for a specific geographic area and may communicate with terminal devices located within the coverage area.

[0045] Figure 1A exemplarily shows a network device and two terminal devices. In some embodiments of the present application, the communication system 100 may include multiple network devices and each network device may include other number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0046] For example, FIG1B is a schematic diagram of the architecture of another communication system provided in an embodiment of the present application. Referring to FIG1B , a terminal device 1101 and a satellite 1102 are included, and wireless communication can be performed between the terminal device 1101 and the satellite 1102. The network formed between the terminal device 1101 and the satellite 1102 can also be referred to as an NTN. In the architecture of the communication system shown in FIG1B , the satellite 1102 can have the function of a base station, and the terminal device 1101 and the satellite 1102 can communicate directly. In the system architecture, the satellite 1102 can be referred to as a network device. In some embodiments of the present application, a plurality of network devices 1102 may be included in the communication system, and each network device 1102 may include other number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0047] For example, FIG1C is a schematic diagram of the architecture of another communication system provided in an embodiment of the present application. Referring to FIG1C , it includes a terminal device 1201, a satellite 1202, and a base station 1203. Wireless communication can be performed between the terminal device 1201 and the satellite 1202, and communication can be performed between the satellite 1202 and the base station 1203. The network formed between the terminal device 1201, the satellite 1202, and the base station 1203 can also be referred to as an NTN. In the architecture of the communication system shown in FIG1C , the satellite 1202 may not have the function of a base station, and the communication between the terminal device 1201 and the base station 1203 needs to be transferred through the satellite 1202. In this system architecture, the base station 1203 can be referred to as a network device. In some embodiments of the present application, a plurality of network devices 1203 may be included in the communication system, and each network device 1203 may include other number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0048] It should be noted that Figures 1A-1C are only examples of the system to which this application is applicable. Of course, the method shown in the embodiment of this application can also be applied to other systems, such as 5G communication systems, LTE communication systems, etc., and the embodiment of this application does not make specific limitations on this.

[0049] In some embodiments of the present application, the wireless communication system shown in Figures 1A-1C may also include other network entities such as a Mobility Management Entity (MME) and an Access and Mobility Management Function (AMF), but the embodiments of the present application are not limited to this.

[0050] It should be understood that in the embodiments of the present application, a device having a communication function in a network / system may be referred to as a communication device. Taking the communication system 100 shown in FIG1A as an example, the communication device may include a network device 110 and a terminal device 120 having a communication function. The network device 110 and the terminal device 120 may be the specific devices described above and will not be described in detail here. The communication device may also include other devices in the communication system 100, such as a network controller, a mobility management entity, and other network entities, which are not limited in the embodiments of the present application.

[0051] It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and / or" is simply a description of an association between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " generally indicates that the related objects are in an "or" relationship.

[0052] It should be understood that the "indication" mentioned in the embodiments of this application can be a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B.

[0053] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and being indicated, configuration and being configured, etc.

[0054] The indication information in the embodiment of the present application includes at least one of a system message, a physical layer signaling (such as downlink control information (DCI)), a radio resource control (RRC) signaling and a media access control element (MAC CE).

[0055] The high-level parameters or high-level signaling in the embodiments of the present application include at least one of system messages, radio resource control (RRC) signaling and media access control element (MAC CE).

[0056] In some embodiments of the present application, "predefined" may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., a terminal device or a network device). This application does not limit the specific implementation method. For example, predefined may refer to information defined in a protocol.

[0057] In some embodiments of the present application, the "protocol" may refer to a standard protocol in the field of communications, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, and this application does not limit this.

[0058] To facilitate understanding of the technical solutions of the embodiments of the present application, the hybrid automatic repeat request Acknowledgement (HARQ-ACK) feedback in the NTN system is described.

[0059] In NTN systems, due to the long distances between terminal devices and network equipment, the round-trip time (RTT) of signal transmission is very long. In GEO systems, the RTT of signal transmission can be on the order of hundreds of milliseconds, for example, up to approximately 600 milliseconds. In LEO systems, the RTT of signal transmission can be on the order of tens of milliseconds. Therefore, when considering the retransmission mechanism of signal transmission, the impact of RTT on the throughput of downlink and uplink data transmission cannot be ignored. The HARQ mechanism in NR systems is no longer applicable to NTN systems.

[0060] In the NR-NTN system, the HARQ mechanism is enhanced, for example, HARQ process disabling is introduced. Specifically, the network device can configure one or some HARQ processes of the terminal device to be disabling, or in other words, the network device can configure the HARQ process of the terminal device as a disabling (Disabled) HARQ process or an enabling (Enabled) HARQ process, or in other words, the HARQ process is configured to disable the HARQ-ACK feedback mode or enable the HARQ-ACK feedback mode. For the HARQ process in the TN network, it can generally be considered as an enabled HARQ process, or in other words, the HARQ-ACK feedback mode is enabled.

[0061] When configuring the HARQ process mode, the RRC uses a bitmap to indicate whether each HARQ process is enabled or disabled, using a HARQ process-by-process basis. For the downlink HARQ process, the bitmap, starting from the first bit on the left, corresponds to downlink HARQ process 0, downlink HARQ process 1, and so on. A bit set to 1 indicates that the corresponding HARQ process is configured to disable the downlink HARQ-ACK feedback mode, and a bit set to 0 indicates that the corresponding HARQ process is configured to enable the downlink HARQ-ACK feedback mode. For the uplink HARQ process, the bitmap, starting from the first bit on the left, corresponds to uplink HARQ process 0, uplink HARQ process 1, and so on. A bit set to 1 indicates that the corresponding HARQ process is configured to use HARQ mode A, and a bit set to 0 indicates that the corresponding HARQ process is configured to use HARQ mode B.

[0062] For the downlink HARQ process, if it is configured to disable the downlink HARQ-ACK feedback mode, the terminal device does not need to perform HARQ-ACK information feedback for the transmission block transmitted in the downlink HARQ process. Specifically, when the downlink HARQ process is configured to enable the downlink HARQ-ACK feedback mode, if the terminal device receives a transmission block transmitted using the downlink HARQ process, then after sending the HARQ-ACK feedback corresponding to the transmission block to the network device, it may receive again the transmission block that the network device uses to schedule downlink data transmission to the terminal device using the downlink HARQ process. When the downlink HARQ process is configured to disable the downlink HARQ-ACK feedback mode, if the terminal device receives a transmission block transmitted using the downlink HARQ process, since it is not necessary to send the HARQ-ACK feedback corresponding to the transmission block to the network device, the terminal device may receive again the transmission block that the network device uses to schedule downlink data transmission to the terminal device after a certain processing time interval after receiving the transmission block.

[0063] For the uplink HARQ process, no matter whether the uplink HARQ process is configured to enable the uplink HARQ-ACK feedback mode or disable the uplink HARQ-ACK feedback mode, when the terminal device receives the uplink authorization information of the transmission block scheduled to be transmitted using the uplink HARQ process, the terminal device sends the physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) to the network device according to the uplink authorization information, and after the PUSCH is transmitted, the terminal device may receive the uplink authorization information of the transmission block scheduled to be transmitted using the uplink HARQ process again. Therefore, from the perspective of data scheduling and transmission at the physical layer, the behavior on the terminal device side is the same. However, when the terminal device is configured with uplink discontinuous reception (DRX), the terminal device handles the DRX behavior of the two different HARQ processes differently. In order to distinguish between the two different uplink HARQ processes, the network device can configure different uplink HARQ states for one or some uplink HARQ processes of the terminal device. Specifically, the network device can configure a certain uplink HARQ process as "HARQ mode A" or "HARQ mode B", where "HARQ mode A" can be considered to correspond to enabling the uplink HARQ-ACK feedback mode, and "HARQ mode B" can be considered to correspond to disabling the uplink HARQ-ACK feedback mode.

[0064] For a HARQ process that is configured to disable the HARQ-ACK feedback mode, during downlink data transmission or uplink data transmission, the network device does not need to wait for the feedback result of the downlink transmission block or the decoding result of the uplink transmission block that was last transmitted using the HARQ process, that is, it can reschedule the HARQ process for downlink data transmission or uplink data transmission. Therefore, as long as it can be ensured that the terminal device has completed processing the data in the previously scheduled HARQ process when receiving the currently scheduled HARQ process, the network device can reuse the disabled HARQ process to schedule multiple downlink transmission blocks or uplink transmission blocks for the terminal device, thereby reducing the impact of RTT.

[0065] To facilitate understanding of the technical solutions of the embodiments of the present application, the HARQ-ACK feedback for PUSCH in the Internet of Things (IoT) system is described.

[0066] In the enhanced Machine Type Communication (eMTC) system, if the terminal device is configured with Coverage Enhancement Mode A (CEmodeA), there are a maximum of 8 uplink HARQ processes in each serving cell; if the terminal device is configured with Coverage Enhancement Mode B (CEmodeB), then if the terminal device is configured with multiple transport block physical uplink shared channels (TB-PUSCH) high-level parameters, there are a maximum of 4 uplink HARQ processes in each serving cell, otherwise there are a maximum of 2 uplink HARQ processes in each serving cell. In addition, if the terminal device is configured with CEmodeA, it is necessary to monitor DCI format 6-1A or 6-0A; if the terminal device is configured with CEmodeB, it is necessary to monitor DCI format 6-1B or 6-0B.

[0067] DCI format 6-0A or 6-0B may be used to indicate HARQ-ACK information corresponding to PUSCH transmission; or in other words, DCI format 6-0A or 6-0B may be used to indicate positive acknowledgment (ACK) feedback corresponding to PUSCH transmission.

[0068] In one case, in DCI format 6-0A, if the multi-TB-PUSCH high-level parameter configuration (e.g., ce-PUSCH-MultiTB-Config) is not enabled and the resource block assignment field in the DCI format 6-0A is set to all 1s, or the multi-TB-PUSCH high-level parameter configuration (e.g., ce-PUSCH-MultiTB-Config) is enabled and the MTC Physical Downlink Control Channel (MPDCCH) feedback HARQ-ACK high-level parameter (e.g., mpdcch-UL-HARQ-ACK-FeedbackConfig) is configured and the most significant bit (MSB) 6 bits in the Scheduling TBs for Unicast Field are set to "110111", then DCI format 6-0A is used to indicate ACK feedback corresponding to PUSCH transmission. Specifically, an 8-bit bitmap consisting of the 6 Least Significant Bits (LSB) in the Scheduling TBs for Unicast Field and the 2 high bits in the Repetition Number field is used to indicate HARQ-ACK. The mapping relationship between the order of the bitmap and the HARQ process index is that the HARQ process index is mapped one-to-one with the bits from high to low in the bitmap in ascending order from small to large. For each bit in the bitmap, a value of 1 indicates ACK, and a value of 0 is a reserved value. In the DCI format 6-0A, all bits except the flag field (Flag format 6-0A / format 6-1A differentiation) and the DCI subframe repetition number field (DCI subframe repetition number) used to distinguish between format 6-0A or format 6-1A are set to 0.

[0069] In another case, for DCI format 6-0A, when the CRC of DCI format 6-0A is scrambled by the preconfigured uplink resource radio network temporary identity (PUR-RNTI) PUR-RNTI and the resource block assignment field (Resource block assignment) is set to all 1s, the DCI format 6-0A includes a 1-bit ACK or fallback indicator field (ACK or Fallback indicator), where the value of this bit is 0 to indicate ACK and the value of 1 to indicate fallback mode.

[0070] In one case, in DCI format 6-0B, if the multi-TB-PUSCH higher layer parameter configuration (e.g., ce-PUSCH-MultiTB-Config) is not enabled and the modulation and coding scheme field in DCI format 6-0B is 4 bits and set to all 1s, or if the multi-TB-PUSCH higher layer parameter configuration (e.g., ce-PUSCH-MultiTB-Config) is enabled and the MPDCCH feedback HARQ-ACK higher layer parameters (e.g., mpdcch-UL-HARQ-ACK-FeedbackConfig) are configured and the most significant (MSB) 6 bits in the Scheduling TBs for Unicast Field are set to "111111", then DCI format 6-0B is used to indicate the ACK feedback corresponding to the PUSCH transmission. Specifically, a 4-bit bitmap consisting of the least significant (LSB) 4 bits in the Scheduling TBs for Unicast Field is used to indicate HARQ-ACK. The mapping relationship between the order of the bitmap and the HARQ process index is that the HARQ process index is mapped one-to-one with the bits in the bitmap from high to low in ascending order. For each bit in the bitmap, a value of 1 indicates ACK, and a value of 0 is a reserved value. In DCI format 6-0B, all fields except the flag field for format 6-0B / format 6-1B differentiation and the DCI subframe repetition number field are set to 0.

[0071] In another case, for DCI format 6-0B, when the CRC of DCI format 6-0B is scrambled by PUR-RNTI and the resource block assignment field is set to all 1s when used for sub-PRB resource allocation or the modulation and coding scheme field is set to all 1s when not used for sub-PRB resource allocation, the DCI format 6-0B includes a 1-bit ACK or fallback indicator field, where the value of this bit is 0 to indicate ACK and the value of 1 to indicate fallback mode.

[0072] In the NB-IoT system, for DCI format N0, when the cyclic redundancy check (CRC) of DCI format N0 is scrambled by PUR-RNTI and the modulation and coding scheme field is set to "1110", DCI format N0 includes a 1-bit ACK or fallback indicator field (ACK or Fallback indicator), where the value of this bit is 0 to indicate ACK and the value of 1 to indicate fallback mode.

[0073] For preconfigured uplink resources (PUR), the terminal device can use the uplink resources preconfigured by the network device for PUSCH transmission in the idle state (RRC_IDLE) without completing the random access process. The terminal device can request to be configured with PUR or request the release of PUR configuration when in the connected state. The network device can configure PUR for the terminal device based on the request of the terminal device, the registration information of the terminal device and / or local policy. PUR is only effective in the cell that receives the cell PUR configuration. When the upper layer requests to re-establish or restore the RRC connection, and the terminal device is configured with a valid PUR and meets the TA validity criteria, PUR transmission can be triggered.

[0074] During uplink transmission using PUR resources, the terminal device may detect ACK or fallback mode indication information carried by the PDCCH scrambled by PUR-RNTI within the PUR response window. For example, if the terminal device ends PUSCH transmission using pre-configured uplink resources in subframe n, the terminal device should detect the Physical Downlink Control Channel (PDCCH) within the PUR response window starting from subframe n+4, and stop PDCCH detection in the PUR response window after detecting the PDCCH scrambled by PUR-RNTI. The length of the PUR response window is configured by high-level parameters.

[0075] If the terminal device receives an ACK indication, it indicates that the transport block in the PUSCH currently being transmitted using PUR resources was successfully received. For example, the terminal device does not need to retransmit the transport block. Alternatively, if the terminal device receives a fallback mode indication, it indicates that the transport block in the PUSCH currently being transmitted using PUR resources was not successfully received. For example, the terminal device needs to retransmit the transport block.

[0076] In the IoT-NTN system, the introduction of HARQ process disabling is mainly based on the HARQ process disabling feature in the NR-NTN system. However, in the NR-NTN system, only the enhancement of how the terminal device feeds back the HARQ-ACK information corresponding to the downlink HARQ process to the network device is considered when the downlink HARQ process is configured to be disabled. Since the network device does not transmit the HARQ-ACK information corresponding to the PUSCH to the terminal device, when the uplink HARQ process is configured to be disabled, there is no need for the network device to indicate the HARQ-ACK information corresponding to the uplink HARQ process to the terminal device.

[0077] However, in the IoT-NTN system, the network device transmits the HARQ-ACK information corresponding to the PUSCH to the terminal device. In this case, when the uplink HARQ process is configured to be disabled, how the network device indicates the HARQ-ACK information corresponding to the uplink HARQ process to the terminal device is an urgent problem to be solved.

[0078] To facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific embodiments. The above related technologies can be combined arbitrarily with the technical solutions of the embodiments of the present application as optional solutions, and all of them fall within the scope of protection of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0079] FIG2 is a schematic interaction diagram of a wireless communication method 200 according to an embodiment of the present application. As shown in FIG2 , the method 200 includes the following contents:

[0080] S210, the network device sends first downlink control information to the terminal device;

[0081] Correspondingly, the terminal device receives the first downlink control information sent by the network device;

[0082] S220: The terminal device determines, based on the first downlink control information, hybrid automatic repeat request acknowledgment HARQ-ACK information corresponding to at least one uplink hybrid automatic repeat request HARQ process of the terminal device.

[0083] In some embodiments, the first downlink control information may be DCI, or may be other downlink control information, which is not limited in this application.

[0084] In some embodiments, the N uplink HARQ processes of the terminal device include at least one first type uplink HARQ process and / or at least one second type uplink HARQ process, wherein the first type uplink HARQ process corresponds to the first mode and the second type uplink HARQ process corresponds to the second mode.

[0085] In some embodiments, the N uplink HARQ processes of the terminal device include an uplink HARQ process of the terminal device in one cell. In a specific embodiment, the N uplink HARQ processes of the terminal device include all uplink HARQ processes of the terminal device in one cell.

[0086] In some embodiments, the N uplink HARQ processes of the terminal device include uplink HARQ processes of the terminal device in multiple cells. Optionally, the multiple cells belong to a cell group. In a specific embodiment, the N uplink HARQ processes of the terminal device include all uplink HARQ processes of the terminal device in all uplink cells in the multiple uplink cells.

[0087] In some embodiments, the N uplink HARQ processes of the terminal device are pre-configured, or may be configured by the network device, which is not limited in this application. For example, the protocol stipulates that the terminal device supports N uplink HARQ processes.

[0088] It should be understood that in some embodiments of the present application, cells and carriers may be equivalent. For example, "downlink cell" may be replaced by "downlink carrier," and "uplink cell" may be replaced by "uplink carrier," etc.

[0089] In some embodiments, the first mode is HARQ mode B; or, the first mode is a disabled HARQ-ACK feedback mode.

[0090] In some embodiments, the second mode is HARQ mode A; or, the second mode is an HARQ-ACK feedback enabled mode.

[0091] In some embodiments, the first type of uplink HARQ process corresponds to a first mode, including:

[0092] The first type of uplink HARQ process corresponds to HARQ mode B; or

[0093] The first type of uplink HARQ process corresponds to disabling the HARQ-ACK feedback mode; or

[0094] The first type of uplink HARQ process is configured as HARQ mode B; or

[0095] The first type of uplink HARQ process is configured to disable the HARQ-ACK feedback mode, or in other words, the first type of uplink HARQ process is configured to be disabled.

[0096] In some embodiments, the second type of uplink HARQ process corresponds to the second mode, including:

[0097] The second type of uplink HARQ process corresponds to HARQ mode A; or

[0098] The second type of uplink HARQ process corresponds to enabling the HARQ-ACK feedback mode; or

[0099] The second type of uplink HARQ process is configured as HARQ mode A; or

[0100] The second type of uplink HARQ process is configured to enable the HARQ-ACK feedback mode, or in other words, the second type of uplink HARQ process is configured to be enabled (Enabled).

[0101] Optionally, HARQ mode A may also be considered as a HARQ mode that enables HARQ-ACK feedback; and HARQ mode B may also be considered as a HARQ mode that disables HARQ-ACK feedback.

[0102] In some embodiments of the present application, the method 200 further includes:

[0103] The terminal device reports first capability information to the network device, where the first capability information is used to indicate that the terminal device supports the uplink HARQ process of the terminal device being configured as the first mode. In other words, the terminal device supports the uplink HARQ process of the first mode.

[0104] In some embodiments of the present application, a mode corresponding to at least one uplink HARQ process of a terminal device is determined according to the first configuration information.

[0105] It should be understood that the first configuration information may be carried by any downlink signaling, for example, including but not limited to RRC signaling and / or downlink control information.

[0106] In some embodiments, the first configuration information may indicate, in an explicit or implicit manner, the mode corresponding to at least one uplink HARQ process of the terminal device. Optionally, the first configuration information is used to indicate whether the uplink HARQ process corresponds to the first mode or the second mode, or to indicate whether the uplink HARQ process corresponds to the first mode.

[0107] For example, the first configuration information is used to indicate that the mode corresponding to the uplink HARQ process is HARQ mode A or HARQ mode B.

[0108] For another example, the first configuration information is used to indicate whether the mode corresponding to the uplink HARQ process is HARQ mode B.

[0109] For another example, the first configuration information is used to indicate that the uplink HARQ process is configured to disable the HARQ-ACK feedback mode or enable the HARQ-ACK feedback mode.

[0110] For another example, the first configuration information is used to indicate whether the uplink HARQ process is configured to disable the HARQ-ACK feedback mode.

[0111] In some embodiments, the first configuration information is used to indicate the modes corresponding to the N uplink HARQ processes of the terminal device.

[0112] Optionally, when the first configuration information is carried through RRC signaling, the first configuration information is used to indicate the modes corresponding to the N uplink HARQ processes of the terminal device.

[0113] In some embodiments, the first configuration information indicates the modes corresponding to the N uplink HARQ processes respectively through bit mapping.

[0114] Optionally, when the first configuration information is carried through RRC signaling, the first configuration information indicates the modes corresponding to the N uplink HARQ processes of the terminal device through bit mapping.

[0115] In some embodiments, the first configuration information includes N bits, corresponding to N uplink HARQ processes of the terminal device, wherein each bit corresponds to an uplink HARQ process, and each bit is used to indicate a mode corresponding to the corresponding uplink HARQ process.

[0116] For example, a bit value of 1 indicates that the corresponding uplink HARQ process corresponds to the first mode; otherwise, it corresponds to the second mode, or in other words, does not correspond to the first mode.

[0117] For another example, a bit value of 0 indicates that the corresponding uplink HARQ process corresponds to the first mode; otherwise, it corresponds to the second mode, or in other words, does not correspond to the first mode.

[0118] It should be understood that the present application does not impose any specific limitation on the mapping relationship between the above-mentioned N bits and N uplink HARQ processes, as long as different bits correspond to different uplink HARQ processes.

[0119] As a mapping method, each bit corresponds to an uplink HARQ process, which may include:

[0120] The N uplink HARQ processes are mapped one-to-one with the N bits in the first configuration information in an ascending order of HARQ process indexes from small to large and in a bit order from high to low.

[0121] As another mapping method, each bit corresponds to an uplink HARQ process, which may include:

[0122] The N uplink HARQ processes are mapped one-to-one with the N bits in the first configuration information in an ascending order of HARQ process indexes from small to large and in a bit order from low to high.

[0123] In other embodiments, the first configuration information is used to indicate a mode corresponding to a target uplink HARQ process, where the target uplink HARQ process includes a HARQ process used for at least one uplink transmission of the terminal device.

[0124] Optionally, the at least one uplink transmission may be an uplink transmission scheduled by the network device, or may be an uplink transmission that is not scheduled, such as an uplink transmission performed using PUR resources.

[0125] Optionally, when the first configuration information is carried by downlink control information, the target uplink HARQ process includes a HARQ process used for uplink transmission scheduled by the downlink control information.

[0126] In some embodiments, the first configuration information is used to indicate a mode corresponding to the target uplink HARQ process, wherein:

[0127] In a case where the uplink transmission corresponding to the target uplink HARQ process is scheduled by downlink control information, the first configuration information is carried in the downlink control information; or

[0128] In a case where the uplink transmission corresponding to the target uplink HARQ process uses pre-configured uplink resources PUR, the first configuration information is carried in RRC signaling.

[0129] That is to say, for uplink transmission scheduled by downlink control information, the network device can indicate the mode corresponding to the uplink HARQ process used by the uplink transmission through the downlink control information. For uplink transmission without scheduling (for example, uplink transmission using PUR resources), the network device can indicate the mode corresponding to the uplink HARQ process used by the uplink transmission through RRC signaling.

[0130] In some embodiments, the first configuration information is used to indicate the mode corresponding to the target uplink HARQ process. When the uplink transmission corresponding to the target uplink HARQ process uses the pre-configured uplink resource PUR, the first configuration information is carried in the downlink control information, wherein the downlink control information is used to activate the pre-configured uplink resource PUR.

[0131] That is to say, in some cases, for unscheduled uplink transmission (such as uplink transmission using PUR resources), if the network device needs to activate the PUR resources through downlink control information, then the network device can also use the downlink control information to indicate the mode corresponding to the uplink HARQ process used for the uplink transmission.

[0132] It is understandable that for unscheduled uplink transmission (e.g., uplink transmission using PUR resources), the associated uplink HARQ process number may be predefined, or may be configured by the network device, and this application does not limit this. For example, when the network device configures a PUR resource for a terminal device, it also configures the uplink HARQ process number associated with the PUR resource. For another example, the network device configures a PUR resource for a terminal device, and the terminal device calculates the uplink HARQ process number associated with the PUR resource based on the time domain location information of the PUR resource.

[0133] In some embodiments, if the target uplink HARQ process includes one uplink HARQ process, the first configuration information may include one bit for indicating the mode corresponding to the one uplink HARQ process. For example, a bit value of 1 indicates that the corresponding uplink HARQ process corresponds to the first mode; otherwise, it corresponds to the second mode, or in other words, does not correspond to the first mode. For another example, a bit value of 0 indicates that the corresponding uplink HARQ process corresponds to the first mode; otherwise, it corresponds to the second mode, or in other words, does not correspond to the first mode.

[0134] In some embodiments, the target uplink HARQ process includes multiple uplink HARQ processes, and the first configuration information is used to indicate modes corresponding to the multiple uplink HARQ processes, wherein the modes corresponding to the multiple uplink HARQ processes are the same.

[0135] In this case, the first configuration information may include one bit for indicating the modes corresponding to the multiple uplink HARQ processes. For example, a bit value of 1 indicates that the corresponding uplink HARQ process corresponds to the first mode; otherwise, it corresponds to the second mode, or in other words, does not correspond to the first mode. For another example, a bit value of 0 indicates that the corresponding uplink HARQ process corresponds to the first mode; otherwise, it corresponds to the second mode, or in other words, does not correspond to the first mode.

[0136] In some other embodiments, the target uplink HARQ process includes multiple uplink HARQ processes, and the first configuration information is used to indicate the modes corresponding to the multiple uplink HARQ processes. Optionally, the first configuration information indicates the modes corresponding to the multiple uplink HARQ processes in a bitmap manner.

[0137] By way of example and not limitation, if the target uplink HARQ process includes K uplink HARQ processes, the first configuration information includes K bits, each bit corresponding to one of the K uplink HARQ processes, and the value of the bit is used to indicate the mode corresponding to the corresponding uplink HARQ process. The mapping relationship between the K bits and the K uplink HARQ processes is described in the relevant description of the aforementioned embodiment and is not repeated here, where K is an integer greater than 1. Optionally, the K uplink HARQ processes are the maximum number of uplink HARQ processes that can be scheduled for a downlink control message; or, the K uplink HARQ processes are the number of uplink HARQ processes actually scheduled for transmission of a downlink control message. As an example, a bit value of 1 indicates that the corresponding uplink HARQ process corresponds to the first mode; otherwise, it corresponds to the second mode, or in other words, does not correspond to the first mode. As another example, a bit value of 0 indicates that the corresponding uplink HARQ process corresponds to the first mode; otherwise, it corresponds to the second mode, or in other words, does not correspond to the first mode.

[0138] It should be understood that in some embodiments of the present application, the HARQ-ACK information corresponding to the uplink HARQ process may refer to the HARQ-ACK information corresponding to the uplink transmission using the uplink HARQ process. Optionally, the uplink transmission may be scheduled by a network device, or may be scheduling-free, for example, the terminal device uses PUR resources for uplink transmission. Optionally, the uplink transmission may refer to the transmission of any uplink data or uplink information, for example, the uplink transmission may include but is not limited to PUSCH transmission.

[0139] In some embodiments, at least one uplink HARQ process of the terminal device includes only the second type of uplink HARQ process, or only the first type of uplink HARQ process, or may also include the first type of uplink HARQ process and the second type of uplink HARQ process.

[0140] The following describes a method for determining HARQ-ACK information corresponding to at least one uplink HARQ process of a terminal device based on the first downlink control information, in combination with a specific embodiment.

[0141] Embodiment 1: The first downlink control information is used to determine the HARQ-ACK information corresponding to the second type of uplink HARQ process of the terminal device. In other words, the network device only indicates the HARQ-ACK information corresponding to the uplink HARQ process corresponding to the second mode to the terminal device, and does not feedback the HARQ-ACK information corresponding to the uplink HARQ process corresponding to the first mode.

[0142] In this case, S220 may include:

[0143] According to the first downlink control information, HARQ-ACK information corresponding to at least one second type uplink HARQ process of the terminal device is determined.

[0144] In some embodiments, the first downlink control information indicates the HARQ-ACK information corresponding to the second type of uplink HARQ process through a bitmap.

[0145] For example, the N uplink HARQ processes of the terminal device include M second-type uplink HARQ processes, and the first downlink control information is used to indicate the HARQ-ACK information corresponding to the M second-type uplink HARQ processes respectively through a bitmap, where M is a positive integer.

[0146] As an example, the first downlink control information includes M bits, each bit corresponds to a second-type uplink HARQ process, and the value of each bit is used to indicate HARQ-ACK information corresponding to the corresponding second-type uplink HARQ process.

[0147] It should be understood that the present application does not impose any specific limitation on the mapping relationship between the above-mentioned M bits and the M second-type uplink HARQ processes, as long as different bits correspond to different second-type uplink HARQ processes.

[0148] As a mapping method, each bit corresponds to a second type uplink HARQ process, including:

[0149] The M second-type uplink HARQ processes are mapped one-to-one with the M bits in a bit order from high to low in ascending order of the HARQ process index.

[0150] That is, the highest bit among the M bits corresponds to the second type uplink HARQ process with the smallest HARQ process index, the lowest bit among the M bits corresponds to the second type uplink HARQ process with the largest HARQ process index, and so on.

[0151] As another mapping method, each bit corresponds to a second type uplink HARQ process, including:

[0152] The M second-type uplink HARQ processes are mapped one-to-one with the M bits in a bit order from low to high in ascending order of the HARQ process indexes.

[0153] That is, the highest bit among the M bits corresponds to the second type uplink HARQ process with the largest HARQ process index, the lowest bit among the M bits corresponds to the second type uplink HARQ process with the smallest HARQ process index, and so on.

[0154] In some embodiments, the first downlink control information is used to indicate HARQ-ACK information corresponding to the second type of uplink HARQ process in a bit mapping manner, and may include:

[0155] For an uplink HARQ process corresponding to uplink transmission in the second type of uplink HARQ process, a value of a bit corresponding to the uplink HARQ process is set according to a demodulation result of the corresponding uplink transmission; and / or,

[0156] For an uplink HARQ process that does not correspond to uplink transmission in the second type of uplink HARQ process, a bit corresponding to the uplink HARQ process indicates a reserved value or a negative acknowledgement NACK.

[0157] That is, the value of the bit corresponding to the second type of uplink HARQ process can be set in at least one of the following ways:

[0158] For an uplink HARQ process corresponding to uplink transmission in the second type of uplink HARQ process, a value of a bit corresponding to the uplink HARQ process is set according to a demodulation result of the corresponding uplink transmission; and / or

[0159] For an uplink HARQ process that does not correspond to uplink transmission in the second type of uplink HARQ process, a bit corresponding to the uplink HARQ process indicates a specific value, such as a reserved value or a negative acknowledgement NACK.

[0160] In some embodiments of the present application, the uplink HARQ process corresponding to the uplink transmission may refer to the uplink HARQ process used by the terminal device for uplink transmission. Optionally, the uplink HARQ process used by the terminal device for uplink transmission may be scheduled by the network device, or may be selected by the terminal device itself.

[0161] In other embodiments of the present application, the uplink HARQ process corresponding to the uplink transmission may refer to the uplink HARQ process used by the terminal device for uplink transmission, and the network device has not sent HARQ-ACK information corresponding to the uplink transmission to the terminal device. Optionally, the use of the uplink HARQ process by the terminal device for uplink transmission may be scheduled by the network device, or may be selected by the terminal device itself.

[0162] In some embodiments, the uplink HARQ process that does not correspond to uplink transmission may mean that the terminal device does not use the uplink HARQ process for uplink transmission; or, the uplink HARQ process that does not correspond to uplink transmission may mean that the terminal device does not use the uplink HARQ process for uplink transmission.

[0163] In other embodiments, the uplink HARQ process that does not correspond to uplink transmission may mean that the terminal device does not use the uplink HARQ process for uplink transmission, and the network device has not sent the HARQ-ACK information corresponding to the uplink HARQ process to the terminal device; or, the uplink HARQ process that does not correspond to uplink transmission may mean that the terminal device does not use the uplink HARQ process for uplink transmission, and the network device has not sent the HARQ-ACK information corresponding to the uplink HARQ process to the terminal device.

[0164] In some embodiments, for the second type of uplink HARQ process corresponding to uplink transmission, the value of the corresponding bit is set according to the demodulation result of the corresponding uplink transmission, which may include:

[0165] When the transport block in the second type of uplink HARQ process is correctly demodulated, the value of the corresponding bit indicates ACK; otherwise, the corresponding bit indicates a reserved value or indicates NACK.

[0166] Optionally, the corresponding bit indicating a reserved value or indicating a NACK may include:

[0167] If the value is 1, it indicates ACK, and the value of the corresponding bit is 0, or in other words, the value of 0 indicates a reserved value or NACK.

[0168] If the value is 0, which indicates ACK, the value of the corresponding bit is 1. In other words, the value of 1 indicates a reserved value or NACK.

[0169] Optionally, for a second type of uplink HARQ process that does not correspond to uplink transmission, the corresponding bit indicating a reserved value or a negative acknowledgement NACK may include:

[0170] If the value is 1, it indicates ACK, and the value of the corresponding bit is 0, or in other words, the value of 0 indicates a reserved value or NACK.

[0171] If the value is 0, which indicates ACK, the value of the corresponding bit is 1. In other words, the value of 1 indicates a reserved value or NACK.

[0172] As an example, assume that the terminal device includes 8 uplink HARQ processes on the first cell, that is, N takes a value of 8, wherein uplink HARQ processes 0, 2, 4, 6, and 7 are configured as HARQ mode B (i.e., corresponding to the first mode), that is, M takes a value of 3. The network device receives two PUSCHs transmitted by the terminal device using uplink HARQ process 3 and uplink HARQ process 4 on the first cell, and the demodulation results of the two PUSCHs are both ACK. In this case, the first downlink control information includes a 3-bit bitmap, wherein the 3-bit bitmap is used to indicate the HARQ-ACK information corresponding to the second type of uplink HARQ process (including uplink HARQ process 1, uplink HARQ process 3, and uplink HARQ process 5). Assuming that a value of 1 represents ACK, for the second type of uplink HARQ process corresponding to uplink transmission (i.e., uplink HARQ process 3), the value of the corresponding bit is set according to the demodulation result of the uplink transmission. Since the demodulation result of the PUSCH corresponding to uplink HARQ process 3 is ACK, the corresponding bit is set to 1.

[0173] For the second type of uplink HARQ process that does not correspond to uplink transmission (i.e., uplink HARQ process 1 and uplink HARQ process 5), the value of the corresponding bit indicates a reserved value or NACK. In this example, a value of 1 indicates ACK, and the value of the corresponding bit is 0.

[0174] For the first mapping mode: the HARQ process index is mapped one-to-one with the bits from high to low in the bitmap in ascending order from small to large, and the 3-bit bitmap included in the first downlink control information is as shown in Table 1.

[0175] Table 1

[0176]

[0177] For the second mapping method: the HARQ process index is mapped one-to-one with the bits from low to high in the bitmap in ascending order from small to large, and the 3-bit bitmap included in the first downlink control information is shown in Table 2.

[0178] Table 3

[0179]

[0180] Embodiment 2: The first downlink control information is used to determine the HARQ-ACK information corresponding to the first type of uplink HARQ process and / or the second type of uplink HARQ process of the terminal device. In other words, regardless of whether the uplink HARQ process corresponds to the first mode or the second mode, the first downlink control information can be used to determine the HARQ-ACK information corresponding to the uplink HARQ process; or, the network device only indicates to the terminal device the HARQ-ACK information corresponding to the uplink HARQ process corresponding to the second mode, and does not feed back the HARQ-ACK information corresponding to the uplink HARQ process corresponding to the first mode; or, the network device only indicates to the terminal device the HARQ-ACK information corresponding to the uplink HARQ process corresponding to the first mode, and does not feed back the HARQ-ACK information corresponding to the uplink HARQ process corresponding to the second mode.

[0181] In this case, S220 may include:

[0182] According to the first downlink control information, HARQ-ACK information corresponding to at least one first type uplink HARQ process and / or HARQ-ACK information corresponding to at least one second type uplink HARQ process of the terminal device is determined.

[0183] In some embodiments, the first downlink control information indicates the HARQ-ACK information corresponding to the uplink HARQ process of the terminal device through a bitmap.

[0184] In some embodiments, the first downlink control information includes N bits, corresponding to N uplink HARQ processes of the terminal device, wherein each bit corresponds to an uplink HARQ process, and the value of each bit is used to indicate the HARQ-ACK information corresponding to the corresponding uplink HARQ process.

[0185] In a specific embodiment, the N uplink HARQ processes of the terminal device include M second-type uplink HARQ processes, then the N bits include M bits, the M bits correspond to the M second-type uplink HARQ processes, and the M bits are used to indicate the HARQ-ACK information corresponding to the M second-type uplink HARQ processes.

[0186] It should be understood that the present application does not impose any specific limitation on the mapping relationship between the above-mentioned N bits and N uplink HARQ processes, as long as different bits correspond to different uplink HARQ processes.

[0187] As a mapping method, each bit corresponds to an uplink HARQ process, including:

[0188] The N uplink HARQ processes are mapped one-to-one with the N bits in a bit order from high to low in ascending order of the HARQ process index.

[0189] That is, the highest bit among the N bits corresponds to the uplink HARQ process with the smallest HARQ process index, and the lowest bit among the N bits corresponds to the uplink HARQ process with the largest HARQ process index.

[0190] As another mapping method, each bit corresponds to an uplink HARQ process, including:

[0191] The N uplink HARQ processes are mapped one-to-one with the N bits in a bit order from low to high in ascending order of the HARQ process index.

[0192] That is, the most significant bit among the N bits corresponds to the uplink HARQ process with the largest HARQ process index, and the least significant bit among the N bits corresponds to the uplink HARQ process with the smallest HARQ process index.

[0193] In some embodiments of the present application, the HARQ-ACK information corresponding to the first type of uplink HARQ process and the HARQ-ACK information corresponding to the second type of uplink HARQ process can be set in the same manner or in an independent manner.

[0194] That is, the HARQ-ACK information corresponding to the first type of uplink HARQ process and the HARQ-ACK information corresponding to the second type of uplink HARQ process may be configured in the same manner or may be configured differently.

[0195] In some embodiments, the value of the bit corresponding to the uplink HARQ process in N bits can be set according to the mode corresponding to the uplink HARQ process and / or whether the uplink HARQ process corresponds to uplink transmission (ie, whether the uplink HARQ process is used for uplink transmission).

[0196] In some embodiments, for the second type of uplink HARQ process, the method described in Embodiment 1 may be used to set the value of the bit corresponding to the second type of uplink HARQ process.

[0197] In some embodiments, for the first type of uplink HARQ process, the value of the bit corresponding to the first type of uplink HARQ process can be set in a similar manner to the second type of uplink HARQ process, or the corresponding bit can be set to indicate a specific value, such as a reserved value or NACK.

[0198] In a specific implementation, regardless of whether the first type of uplink HARQ process corresponds to uplink transmission, the value of the corresponding bit indicates a reserved value or NACK. For example, if the value is 1 to indicate ACK, the value of the corresponding bit is 0, or in other words, the value of 0 indicates a reserved value or NACK. Alternatively, if the value is 0 to indicate ACK, the value of the corresponding bit is 1, or in other words, the value of 1 indicates a reserved value or NACK. In this implementation, since the value of the corresponding bit of the first type of uplink HARQ process always indicates a reserved value or NACK, it can also be considered that the network device does not feed back HARQ-ACK information corresponding to the uplink HARQ process corresponding to the first mode.

[0199] In some other specific implementations, depending on whether the first type of uplink HARQ process corresponds to uplink transmission, the corresponding bit indicates a corresponding value.

[0200] For example, for an uplink HARQ process corresponding to uplink transmission in the first type of uplink HARQ process, a value of a bit corresponding to the uplink HARQ process is set according to a demodulation result of the corresponding uplink transmission.

[0201] Optionally, when the transport block in the first type of uplink HARQ process is correctly demodulated, the value of the corresponding bit indicates ACK; otherwise, the value of the corresponding bit is reserved or indicates NACK. For example, if the value is 1 indicating ACK, the value of the corresponding bit is 0, or if the value is 0 indicating ACK, the value of the corresponding bit is 1.

[0202] For another example, for an uplink HARQ process in the first type of uplink HARQ process that does not correspond to uplink transmission, the bit corresponding to the uplink HARQ process indicates a reserved value or a negative acknowledgment (NACK). For example, if a value of 1 indicates ACK, the corresponding bit value is 0, or in other words, a value of 0 indicates a reserved value or NACK. Alternatively, if a value of 0 indicates ACK, the corresponding bit value is 1, or in other words, a value of 1 indicates a reserved value or NACK.

[0203] In some embodiments, the first downlink control information is used to indicate HARQ-ACK information corresponding to the uplink HARQ process in a bitmap manner, including at least one of the following:

[0204] For an uplink HARQ process corresponding to uplink transmission in the second type of uplink HARQ process, a value of a corresponding bit in the M bits of the uplink HARQ process is set according to a demodulation result of the corresponding uplink transmission;

[0205] For an uplink HARQ process that does not correspond to uplink transmission in the second type of uplink HARQ process, a corresponding bit in the M bits of the uplink HARQ process indicates a reserved value or NACK;

[0206] Other bits among the N bits except the M bits indicate a reserved value or NACK.

[0207] In some other embodiments, the first downlink control information is used to indicate HARQ-ACK information corresponding to the uplink HARQ process in a bit mapping manner, including at least one of the following:

[0208] For an uplink HARQ process corresponding to uplink transmission in the first type of uplink HARQ process, a value of a bit corresponding to the uplink HARQ process is set according to a demodulation result of the corresponding uplink transmission;

[0209] For an uplink HARQ process that does not correspond to uplink transmission in the first type of uplink HARQ process, a bit corresponding to the uplink HARQ process indicates a reserved value or NACK;

[0210] For an uplink HARQ process corresponding to uplink transmission in the second type of uplink HARQ process, a value of a bit corresponding to the uplink HARQ process is set according to a demodulation result of the corresponding uplink transmission;

[0211] For an uplink HARQ process that does not correspond to uplink transmission in the second type of uplink HARQ process, a bit corresponding to the uplink HARQ process indicates a reserved value or NACK.

[0212] The uplink HARQ process corresponding to uplink transmission and the uplink HARQ process not corresponding to uplink transmission refer to the relevant description in Example 1, and for the sake of brevity, they are not repeated here.

[0213] For example, if the terminal device includes 8 uplink HARQ processes (HARQ process 0 to HARQ process 7) in a cell, that is, N is 8, the network device receives two PUSCHs transmitted by the terminal device using uplink HARQ process 3 and uplink HARQ process 4 in the first cell, where it is assumed that the value 1 represents ACK, the two uplink HARQ processes are both configured as HARQ mode B (that is, corresponding to the first mode) and the demodulation results of the two PUSCHs are both ACK.

[0214] In some implementations, for the second type of uplink HARQ process that does not correspond to uplink transmission, the value of its corresponding bit is set to a reserved value or NACK, that is, 0. For the first type of uplink HARQ process, regardless of whether it corresponds to uplink transmission, the value of its corresponding bit is set to a reserved value or NACK, that is, 0. Since uplink HARQ processes 0 to 2 and uplink HARQ processes 5 to 7 all correspond to the second mode and do not correspond to uplink transmission, the value of their corresponding bits is 0. Uplink HARQ processes 3 and 4 correspond to the first mode, and the value of their corresponding bits is also 0. The bitmap of the 8 bits included in the first downlink control information can be shown in Table 3:

[0215] Table 3

[0216]

[0217] In some implementations, for the second type of uplink HARQ process that does not correspond to uplink transmission, the value of the corresponding bit is set to a reserved value or NACK, that is, 0. For the first type of uplink HARQ process that corresponds to uplink transmission, the value of the corresponding bit is set according to the demodulation result of the uplink transmission. Since uplink HARQ processes 0 to 2 and uplink HARQ processes 5 to 7 all correspond to the second mode and do not correspond to uplink transmission, the value of their corresponding bits is 0. Uplink HARQ processes 3 and 4 correspond to the first mode and correspond to uplink transmission, and the value of their corresponding bits is determined according to the demodulation result, that is, 1. The bitmap of the 8 bits included in the first downlink control information can be shown in Table 4:

[0218] Table 4

[0219]

[0220] It should be understood that Tables 3 and 4 are only used as an example to illustrate the one-to-one mapping of HARQ process indices in ascending order from small to large to bits in the bitmap from low to high. In other embodiments, other mapping relationships may also be used, and the present application is not limited to this.

[0221] In some embodiments, when the first configuration information is carried through RRC signaling, the first downlink control information includes M bits, and the first downlink control information indicates the HARQ-ACK information corresponding to at least one uplink HARQ process of the M second-type uplink HARQ processes through bit mapping.

[0222] Optionally, when the first configuration information is carried through RRC signaling, the terminal device can obtain the modes corresponding to the N uplink HARQ processes through RRC signaling, that is, the terminal device can know in advance which M uplink HARQ processes among the N uplink HARQ processes are the second type of uplink HARQ processes. Accordingly, the first downlink control information can only include M bits corresponding to the M second type uplink HARQ processes, where each bit is used to indicate the HARQ-ACK information corresponding to a second type uplink HARQ process. In this case, the network device can only feedback the HARQ-ACK information corresponding to the second type uplink HARQ process, for example, only feedback the HARQ-ACK information corresponding to the second type uplink HARQ process corresponding to the uplink transmission.

[0223] In some embodiments, when the first configuration information is carried by downlink control information, the first downlink control information includes N bits, and the first downlink control information indicates the HARQ-ACK information corresponding to at least one uplink HARQ process among the N uplink HARQ processes through bit mapping.

[0224] Optionally, when the first configuration information is carried by downlink control information, the terminal device can obtain the mode corresponding to the target uplink HARQ process through the downlink control information. That is, since the mode corresponding to the target uplink HARQ process is indicated by dynamic signaling, the terminal device cannot know in advance which uplink HARQ process or processes among the N uplink HARQ processes are the second type of uplink HARQ processes. Accordingly, the first downlink control information needs to include N bits corresponding to the N uplink HARQ processes, where each bit is used to indicate the HARQ-ACK information corresponding to an uplink HARQ process. In this case, the network device can indicate the HARQ-ACK information corresponding to at least one uplink HARQ process among the N uplink HARQ processes, for example, feedback the HARQ-ACK information corresponding to the uplink HARQ process corresponding to the uplink transmission. Alternatively, in this case, if the network device only feedbacks the HARQ-ACK information corresponding to the second type of uplink HARQ process, the bit corresponding to the first type of uplink HARQ process among the N bits indicates a reserved value or a negative acknowledgement NACK.

[0225] In some embodiments, when the first configuration information is carried through RRC signaling and downlink control information, the first downlink control information includes N bits, and the first downlink control information indicates the HARQ-ACK information corresponding to at least one uplink HARQ process among the N uplink HARQ processes through bit mapping.

[0226] Optionally, when the first configuration information is carried through RRC signaling and downlink control information, the terminal device can obtain the mode corresponding to N uplink HARQ processes or the target uplink HARQ process. That is, since the mode corresponding to the target uplink HARQ process is indicated by dynamic signaling, the terminal device cannot know in advance which uplink HARQ process or processes among the N uplink HARQ processes are the second type of uplink HARQ processes. Accordingly, the first downlink control information needs to include N bits corresponding to the N uplink HARQ processes, where each bit is used to indicate the HARQ-ACK information corresponding to an uplink HARQ process. In this case, the network device can indicate the HARQ-ACK information corresponding to at least one uplink HARQ process among the N uplink HARQ processes, for example, feedback the HARQ-ACK information corresponding to the uplink HARQ process corresponding to the uplink transmission. Alternatively, in this case, if the network device only feeds back HARQ-ACK information corresponding to the second type of uplink HARQ process, the bit corresponding to the first type of uplink HARQ process in the N bits indicates a reserved value or a negative acknowledgement NACK.

[0227] In some embodiments of the present application, the method 200 further includes:

[0228] In a case where the N uplink HARQ processes are all first-type uplink HARQ processes, the first downlink control information is not used to indicate HARQ-ACK information corresponding to at least one uplink HARQ process of the terminal device; or

[0229] In a case where the N uplink HARQ processes are all first-type uplink HARQ processes, the terminal device does not expect to receive the first downlink control information indicating HARQ-ACK information in a bit mapping manner; or

[0230] In a case where the N uplink HARQ processes are all first-type uplink HARQ processes, the first downlink control information is used to indicate HARQ-ACK information corresponding to at least one uplink HARQ process among the N first-type uplink HARQ processes through bit mapping.

[0231] Correspondingly, when the N uplink HARQ processes are all first-type uplink HARQ processes, the network device does not send the first downlink control information indicating the HARQ-ACK information according to the bit mapping method to the terminal device, or the first downlink control information is used to indicate the HARQ-ACK information corresponding to at least one uplink HARQ process among the N first-type uplink HARQ processes through bit mapping. Optionally, the at least one uplink HARQ process may include an uplink HARQ process corresponding to the uplink transmission.

[0232] In some embodiments of the present application, the CRC corresponding to the first downlink control information is scrambled by PUR-RNTI, and the first downlink control information is associated with the uplink transmission performed using the target uplink HARQ process through the PUR resource, wherein the target uplink HARQ process is a first type uplink HARQ process.

[0233] In some embodiments, the first downlink control information includes a first indication field, where the first indication field is used to indicate an ACK or fallback mode. That is, regardless of whether the uplink HARQ process used for uplink transmission via the PUR corresponds to the first mode or the second mode, the first indication field in the associated first downlink control information is interpreted in the same manner.

[0234] Optionally, the first indication field is 1 bit. As an example, the 1-bit value is 1 to indicate ACK, and the 1-bit value is 0 to indicate fallback mode. As another example, the 1-bit value is 0 to indicate ACK, and the 1-bit value is 1 to indicate fallback mode.

[0235] Optionally, the first indication field indicates ACK, indicating that at least one uplink transmission of the terminal device is successfully received.

[0236] Optionally, the first indication field indicating the fallback mode indicates that at least one uplink transmission of the terminal device is not successfully received.

[0237] The at least one uplink transmission is transmitted through a PUR resource, and an uplink HARQ process used to transmit the at least one uplink transmission is a first type of uplink HARQ process.

[0238] As an example, if the terminal device receives an ACK in the first indication field of the first downlink control information, it means that the transport block in the uplink transmission currently using the PUR resource has been successfully received. In this case, the terminal device does not need to retransmit the transport block. Alternatively, if the terminal device receives a fallback mode in the first indication field of the first downlink control information, it means that the transport block in the uplink transmission currently using the PUR resource has not been successfully received. In this case, the terminal device needs to retransmit the transport block.

[0239] In some other embodiments, the first downlink control information includes a first indication field, and the first indication field is used to indicate a reserved value or a fallback mode.

[0240] Optionally, the first indication field indicates that the reserved value represents that at least one uplink transmission of the terminal device is successfully received.

[0241] Optionally, the first indication field indicating the fallback mode indicates that at least one uplink transmission of the terminal device is not successfully received.

[0242] The at least one uplink transmission is transmitted through a PUR resource, and an uplink HARQ process used to transmit the at least one uplink transmission is a first type of uplink HARQ process.

[0243] Optionally, the first indication field is 1 bit. As an example, the 1-bit value is 0 to indicate a reserved value, and the 1-bit value is 1 to indicate a fallback mode. As another example, the 1-bit value is 1 to indicate a reserved value, and the 0-bit value is 0 to indicate a fallback mode.

[0244] As an example, if the terminal device receives a first indication field in the first downlink control information indicating a reserved value, the terminal device ignores the information. Alternatively, if the terminal device receives a first indication field in the first downlink control information indicating a fallback mode, it indicates that the transport block in the uplink transmission currently using the PUR resource has not been successfully received. In this case, the terminal device needs to retransmit the transport block.

[0245] Optionally, the first indication field included in the first downlink control information may be reused to indicate other information; or, the first indication field included in the first downlink control information is set to a reserved value, for example, to 0.

[0246] Optionally, when the uplink HARQ process used for uplink transmission through PUR resources corresponds to the first mode, the associated first downlink control information does not include the first indication field.

[0247] In some embodiments of the present application, the method 200 further includes:

[0248] S201: A network device determines first downlink control information.

[0249] For example, the network device obtains HARQ-ACK information corresponding to at least one uplink HARQ process of the terminal device, and determines the first downlink control information based on the HARQ-ACK feedback information corresponding to the at least one uplink HARQ process.

[0250] For another example, the network device obtains HARQ-ACK information corresponding to at least one second-type uplink HARQ process of the terminal device, and determines the first downlink control information based on the HARQ-ACK feedback information corresponding to the at least one second-type uplink HARQ process.

[0251] For another example, the network device obtains HARQ-ACK information corresponding to at least one first-type uplink HARQ process of the terminal device, and determines the first downlink control information based on the HARQ-ACK feedback information corresponding to the at least one first-type uplink HARQ process.

[0252] Optionally, the network device obtaining HARQ-ACK information corresponding to at least one uplink HARQ process of the terminal device may include:

[0253] Determining HARQ-ACK information corresponding to the uplink HARQ process based on a demodulation result of the uplink transmission corresponding to the uplink HARQ process; and / or

[0254] The HARQ-ACK information corresponding to the uplink HARQ process is determined according to the mode corresponding to the uplink HARQ process.

[0255] For example, for the first type of uplink HARQ process, the corresponding HARQ-ACK information may be a specific value, such as a reserved value or NACK.

[0256] For another example, for a first type of uplink HARQ process corresponding to uplink transmission, the corresponding HARQ-ACK information may be determined according to a demodulation result of the corresponding uplink transmission.

[0257] For another example, for a first type of uplink HARQ process that does not correspond to uplink transmission, the corresponding HARQ-ACK information may be a specific value, such as a reserved value or NACK.

[0258] For another example, for the second type of uplink HARQ process corresponding to uplink transmission, the corresponding HARQ-ACK information may be determined according to the demodulation result of the corresponding uplink transmission.

[0259] For another example, for a second type of uplink HARQ process that does not correspond to uplink transmission, the corresponding HARQ-ACK information may be a specific value, such as a reserved value or NACK.

[0260] It should be understood that in the embodiment of the present application, the network device sets the bitmap corresponding to the first configuration information and the first downlink control information, and the terminal device interprets the bitmap corresponding to the first configuration information and the first downlink control. They correspond to each other, thereby enabling the network device and the terminal device to have a consistent understanding of the HARQ-ACK information corresponding to the uplink HARQ process, ensuring that the terminal device and the network device have a consistent understanding of the codebook, and improving communication reliability and efficiency.

[0261] In summary, in an embodiment of the present application, when there is an uplink HARQ process corresponding to the first mode in the uplink HARQ process of the terminal device, the network device may indicate HARQ-ACK information corresponding to at least one uplink HARQ process to the terminal device through downlink control information. For example, the network device may only indicate the HARQ-ACK information corresponding to the uplink HARQ process corresponding to the second mode through downlink control information, or may also indicate the HARQ-ACK information corresponding to the uplink HARQ process corresponding to the first mode and / or the uplink HARQ process corresponding to the second mode through downlink control information.

[0262] For example, the downlink control information may include N bits, and the N bits correspond one-to-one to the N uplink HARQ processes of the terminal device.

[0263] For another example, the downlink control information may include M bits, and the M bits correspond one-to-one to M uplink HARQ processes of the terminal device, wherein the M uplink HARQ processes do not include the uplink HARQ process corresponding to the first mode.

[0264] FIG3 is a schematic interaction diagram of a wireless communication method 300 according to an embodiment of the present application. As shown in FIG3 , the method 300 includes at least part of the following contents:

[0265] S310, the network device may send second configuration information to the terminal device;

[0266] Correspondingly, the terminal device receives the second configuration information sent by the network device.

[0267] The second configuration information is used to configure a mode corresponding to at least one downlink HARQ process of the terminal device.

[0268] In some embodiments, the X downlink HARQ processes of the terminal device include at least one first type downlink HARQ process and / or at least one second type downlink HARQ process, wherein the first type downlink HARQ process corresponds to the first mode, and the second type downlink HARQ process corresponds to the second mode, and X is a positive integer.

[0269] In some embodiments, the X downlink HARQ processes of the terminal device include the downlink HARQ processes of the terminal device in one cell. In a specific embodiment, the X downlink HARQ processes of the terminal device include all downlink HARQ processes of the terminal device in one cell.

[0270] In some embodiments, the X downlink HARQ processes of the terminal device include downlink HARQ processes of the terminal device in multiple cells. Optionally, the multiple cells are cells in a physical uplink control channel (PUCCH) cell group, and / or the multiple cells belong to a cell group. In a specific embodiment, the X downlink HARQ processes of the terminal device include all downlink HARQ processes of the terminal device in all cells in a cell group.

[0271] In some embodiments, the X downlink HARQ processes of the terminal device are pre-configured, or may be configured by the network device, which is not limited in this application. For example, the protocol stipulates that the terminal device supports X downlink HARQ processes.

[0272] It should be understood that in some embodiments of the present application, cells and carriers may be equivalent. For example, "downlink cell" may be replaced by "downlink carrier," and "uplink cell" may be replaced by "uplink carrier," etc.

[0273] In some embodiments, the first mode is a disabled HARQ-ACK feedback mode.

[0274] In some embodiments, the second mode is a HARQ-ACK feedback enabled mode.

[0275] In some embodiments, the first type of downlink HARQ process corresponds to a first mode, including:

[0276] The first type of downlink HARQ process corresponds to disabling the HARQ-ACK feedback mode; or

[0277] The first type of downlink HARQ process is configured to disable the HARQ-ACK feedback mode, or in other words, the first type of downlink HARQ process is configured to be disabled.

[0278] In some embodiments, the second type of downlink HARQ process corresponds to the second mode, including:

[0279] The second type of downlink HARQ process corresponds to enabling the HARQ-ACK feedback mode; or

[0280] The second type of downlink HARQ process is configured to enable the HARQ-ACK feedback mode, or in other words, the second type of downlink HARQ process is configured to be enabled (Enabled).

[0281] In some embodiments of the present application, the method 300 further includes:

[0282] The terminal device reports second capability information to the network device, and the second capability information is used to indicate that the terminal device supports the downlink HARQ process of the terminal device being configured as the first mode. In other words, the terminal device supports the downlink HARQ process of the first mode.

[0283] It should be understood that the second configuration information may be carried by any downlink signaling, for example, including but not limited to RRC signaling and / or downlink control information.

[0284] In some embodiments, the second configuration information may indicate, in an explicit or implicit manner, the mode corresponding to at least one downlink HARQ process of the terminal device. Optionally, the second configuration information is used to indicate whether the downlink HARQ process corresponds to the first mode or the second mode, or to indicate whether the downlink HARQ process corresponds to the first mode.

[0285] For example, the second configuration information is used to indicate that the downlink HARQ process is configured to disable the HARQ-ACK feedback mode or enable the HARQ-ACK feedback mode.

[0286] For another example, the second configuration information is used to indicate whether the downlink HARQ process is configured to disable the HARQ-ACK feedback mode.

[0287] In some embodiments, the second configuration information is used to indicate the modes corresponding to the X downlink HARQ processes of the terminal device.

[0288] Optionally, when the second configuration information is carried through RRC signaling, the second configuration information is used to indicate the modes corresponding to the X downlink HARQ processes of the terminal device.

[0289] In some embodiments, the second configuration information indicates the modes corresponding to the X downlink HARQ processes respectively through a bit mapping manner.

[0290] Optionally, when the second configuration information is carried through RRC signaling, the second configuration information indicates the modes corresponding to the X downlink HARQ processes of the terminal device through bit mapping.

[0291] In some embodiments, the second configuration information includes X bits, corresponding to X downlink HARQ processes of the terminal device, wherein each bit corresponds to a downlink HARQ process, and each bit is used to indicate a mode corresponding to the corresponding downlink HARQ process.

[0292] For example, a bit value of 1 indicates that the corresponding downlink HARQ process corresponds to the first mode; otherwise, it corresponds to the second mode, or in other words, does not correspond to the first mode.

[0293] For another example, a bit value of 0 indicates that the corresponding downlink HARQ process corresponds to the first mode; otherwise, it corresponds to the second mode, or in other words, does not correspond to the first mode.

[0294] It should be understood that the present application does not impose any specific limitation on the mapping relationship between the above X bits and the X downlink HARQ processes, as long as different bits correspond to different downlink HARQ processes.

[0295] As a mapping method, each bit corresponds to a downlink HARQ process, which may include:

[0296] The X downlink HARQ processes are mapped one-to-one with the X bits in the second configuration information in an ascending order of HARQ process indexes from small to large, in a bit order from high to low.

[0297] As another mapping method, each bit corresponds to a downlink HARQ process, which may include:

[0298] The X downlink HARQ processes are mapped one-to-one with the X bits in the second configuration information in ascending order of HARQ process indexes from small to large and in a bit order from low to high.

[0299] In some other embodiments, the second configuration information is used to indicate a mode corresponding to a target downlink HARQ process, where the target downlink HARQ process includes at least one HARQ process used for downlink transmission.

[0300] Optionally, the at least one downlink transmission may be a downlink transmission scheduled by the network device, or may be a scheduling-free downlink transmission, such as a Semi-Persistent Scheduling (SPS) transmission.

[0301] Optionally, when the second configuration information is carried by downlink control information, the target downlink HARQ process includes a downlink HARQ process used for downlink transmission scheduled by the downlink control information.

[0302] In some embodiments, the second configuration information is used to indicate a mode corresponding to the target downlink HARQ process, wherein:

[0303] In a case where the downlink transmission corresponding to the target downlink HARQ process is downlink control information scheduling, the second configuration information is carried in the downlink control information; or

[0304] In a case where the downlink transmission corresponding to the target downlink HARQ process uses SPS resources, the second configuration information is carried in RRC signaling.

[0305] That is to say, for downlink transmission scheduled by downlink control information, the network device can indicate the mode corresponding to the downlink HARQ process used by the downlink transmission through the downlink control information; for downlink transmission without scheduling, the network device can indicate the mode corresponding to the downlink HARQ process used by the downlink transmission through RRC signaling.

[0306] In some embodiments, the second configuration information is used to indicate the mode corresponding to the target downlink HARQ process. When the downlink transmission corresponding to the target downlink HARQ process uses SPS resources, the second configuration information is carried in the downlink control information, wherein the downlink control information is used to activate the SPS resources.

[0307] That is to say, in some cases, for downlink transmission without scheduling (such as SPS transmission), if the network device needs to activate SPS resources through downlink control information, then the network device can also use the downlink control information to indicate the mode corresponding to the downlink HARQ process used for the downlink transmission.

[0308] It is understandable that for scheduling-free downlink transmission (e.g., SPS transmission), the associated downlink HARQ process number may be predefined, or may be configured by the network device, and this application does not limit this. For example, when the network device configures SPS resources for the terminal device, it also configures the downlink HARQ process number associated with the SPS resource. For another example, the network device configures SPS resources for the terminal device, and the terminal device calculates the downlink HARQ process number associated with the SPS resource based on the time domain location information of the SPS resource.

[0309] In some embodiments, if the target downlink HARQ process includes one downlink HARQ process, the second configuration information may include one bit for indicating the mode corresponding to the one downlink HARQ process. For example, a bit value of 1 indicates that the corresponding downlink HARQ process corresponds to the first mode; otherwise, it corresponds to the second mode, or in other words, does not correspond to the first mode. For another example, a bit value of 0 indicates that the corresponding downlink HARQ process corresponds to the first mode; otherwise, it corresponds to the second mode, or in other words, does not correspond to the first mode.

[0310] In some embodiments, the target downlink HARQ process includes multiple downlink HARQ processes, and the second configuration information is used to indicate modes corresponding to the multiple downlink HARQ processes, wherein the modes corresponding to the multiple downlink HARQ processes are the same.

[0311] In this case, the second configuration information may include one bit for indicating the modes corresponding to the multiple downlink HARQ processes. For example, a bit value of 1 indicates that the corresponding downlink HARQ process corresponds to the first mode; otherwise, it corresponds to the second mode, or in other words, does not correspond to the first mode. For another example, a bit value of 0 indicates that the corresponding downlink HARQ process corresponds to the first mode; otherwise, it corresponds to the second mode, or in other words, does not correspond to the first mode.

[0312] In some other embodiments, the target downlink HARQ process includes multiple downlink HARQ processes, and the second configuration information is used to indicate the modes corresponding to the multiple downlink HARQ processes. Optionally, the second configuration information indicates the modes corresponding to the multiple downlink HARQ processes in a bitmap manner.

[0313] By way of example and not limitation, if the target downlink HARQ process includes Y downlink HARQ processes, the second configuration information includes Y bits, each bit corresponding to one of the Y downlink HARQ processes, and the value of the bit is used to indicate the mode corresponding to the corresponding downlink HARQ process. The mapping relationship between the Y bits and the Y downlink HARQ processes is described in the relevant description of the aforementioned embodiment and is not repeated here, where Y is an integer greater than 1. Optionally, the Y downlink HARQ processes are the maximum number of downlink HARQ processes that can be scheduled for a downlink control message; or, the Y downlink HARQ processes are the number of downlink HARQ processes actually scheduled for transmission of a downlink control message. As an example, a bit value of 1 indicates that the corresponding downlink HARQ process corresponds to the first mode; otherwise, it corresponds to the second mode, or in other words, does not correspond to the first mode. As another example, a bit value of 0 indicates that the corresponding downlink HARQ process corresponds to the first mode; otherwise, it corresponds to the second mode, or in other words, does not correspond to the first mode.

[0314] Optionally, the second configuration information in the method 300 and the first configuration information in the method 200 may be sent through the same signaling, or may be sent through different signaling, which is not limited in this application.

[0315] In some embodiments, the mode corresponding to the downlink HARQ process and / or whether the downlink HARQ process corresponds to a downlink transmission can be used to determine whether to feed back HARQ-ACK information corresponding to the downlink HARQ process. For specific implementation, refer to the relevant implementation of the method for determining the HARQ-ACK information corresponding to the uplink HARQ process in method 200. For the sake of brevity, it is not repeated here.

[0316] For example, when the downlink HARQ process corresponds to the first mode, HARQ-ACK information corresponding to the downlink HARQ process is not fed back.

[0317] For another example, when the downlink HARQ process corresponds to downlink transmission (regardless of mode), the HARQ-ACK information corresponding to the downlink HARQ process is fed back, for example, the HARQ-ACK information corresponding to the downlink HARQ process is set according to the demodulation result of the downlink transmission.

[0318] For another example, when the downlink HARQ process corresponds to the second mode and corresponds to downlink transmission, the HARQ-ACK information corresponding to the downlink HARQ process is fed back, for example, the HARQ-ACK information corresponding to the downlink HARQ process is set according to the demodulation result of the downlink transmission.

[0319] In summary, in an embodiment of the present application, the network device can indicate the mode corresponding to at least one downlink HARQ process to the terminal device through the second configuration information, and correspondingly, the terminal device can determine the mode corresponding to at least one downlink HARQ process based on the second configuration information. Further, the terminal device can perform HARQ-ACK feedback based on the mode corresponding to the at least one downlink HARQ process and / or whether the at least one downlink HARQ process corresponds to downlink transmission. Correspondingly, the network device can interpret the HARQ-ACK feedback of the terminal device based on the mode corresponding to the at least one downlink HARQ process and / or whether the at least one downlink HARQ process corresponds to downlink transmission, thereby achieving a consistent understanding of the association relationship between the downlink HARQ process for which the HARQ-ACK information is to be fed back and its corresponding HARQ-ACK information.

[0320] The above text, in combination with Figures 2 to 3, describes in detail the method embodiment of the present application. The following text, in combination with Figures 4 to 8, describes in detail the device embodiment of the present application. It should be understood that the device embodiment and the method embodiment correspond to each other, and similar descriptions can refer to the method embodiment.

[0321] FIG4 shows a schematic block diagram of a terminal device 400 according to an embodiment of the present application. As shown in FIG4 , the terminal device 400 includes:

[0322] The communication unit 410 is configured to receive first downlink control information sent by a network device;

[0323] The processing unit 420 is used to determine the hybrid automatic repeat request acknowledgment HARQ-ACK information corresponding to at least one uplink hybrid automatic repeat request HARQ process of the terminal device based on the first downlink control information, wherein the N uplink HARQ processes of the terminal device include at least one first type of uplink HARQ process, the first type of uplink HARQ process corresponds to a first mode, and N is a positive integer.

[0324] In some embodiments, the first type of uplink HARQ process corresponds to a first mode, including:

[0325] The first type of uplink HARQ process corresponds to HARQ mode B; or

[0326] The first type of uplink HARQ process corresponds to a disabled HARQ-ACK feedback mode; or

[0327] The first type of uplink HARQ process is configured as HARQ mode B; or

[0328] The first type of uplink HARQ process is configured to disable the HARQ-ACK feedback mode.

[0329] In some embodiments, the N uplink HARQ processes of the terminal device include M second-type uplink HARQ processes, and the first downlink control information is used to indicate the HARQ-ACK information corresponding to the M second-type uplink HARQ processes, wherein the second-type uplink HARQ process corresponds to the second mode, and M is a positive integer.

[0330] In some embodiments, the second type of uplink HARQ process corresponds to a second mode, including:

[0331] The second type of uplink HARQ process corresponds to HARQ mode A; or

[0332] The second type of uplink HARQ process corresponds to enabling the HARQ-ACK feedback mode; or

[0333] The second type of uplink HARQ process is configured as HARQ mode A; or

[0334] The second type of uplink HARQ process is configured to enable a HARQ-ACK feedback mode.

[0335] In some embodiments, the first downlink control information includes M bits, each bit corresponds to a second type uplink HARQ process, and the first downlink control information is used to indicate the HARQ-ACK information corresponding to the second type uplink HARQ process through bit mapping.

[0336] In some embodiments, each bit corresponds to a second type uplink HARQ process, including:

[0337] The M second-type uplink HARQ processes are mapped one-to-one with the M bits in ascending order of HARQ process index from small to large; or,

[0338] The M second-type uplink HARQ processes are mapped one-to-one with the M bits in a bit order from low to high in ascending order of HARQ process indexes.

[0339] In some embodiments, the first downlink control information is used to indicate HARQ-ACK information corresponding to the second-type uplink HARQ process in a bit mapping manner, including:

[0340] For an uplink HARQ process corresponding to uplink transmission in the second type of uplink HARQ process, a value of a bit corresponding to the uplink HARQ process is set according to a demodulation result of the corresponding uplink transmission; and / or,

[0341] For an uplink HARQ process that does not correspond to uplink transmission in the second-type uplink HARQ process, a bit corresponding to the uplink HARQ process indicates a reserved value or a negative acknowledgement NACK.

[0342] In some embodiments, the first downlink control information includes N bits, each bit corresponds to an uplink HARQ process, wherein M bits of the N bits correspond to M second-type uplink HARQ processes, and the first downlink control information is used to indicate the HARQ-ACK information corresponding to the uplink HARQ process through bit mapping.

[0343] In some embodiments, each bit corresponds to an uplink HARQ process, including:

[0344] The N uplink HARQ processes are mapped one-to-one with the N bits in ascending order of HARQ process index from small to large; or,

[0345] The N uplink HARQ processes are mapped one-to-one with the N bits in a bit order from low to high in ascending order of HARQ process indexes.

[0346] In some embodiments, the first downlink control information is used to indicate the HARQ-ACK information corresponding to the uplink HARQ process in a bit mapping manner, including at least one of the following:

[0347] For an uplink HARQ process corresponding to uplink transmission in the second type of uplink HARQ process, a value of a corresponding bit in the M bits of the uplink HARQ process is set according to a demodulation result of the corresponding uplink transmission;

[0348] For an uplink HARQ process that does not correspond to uplink transmission in the second-type uplink HARQ process, a corresponding bit of the uplink HARQ process in the M bits indicates a reserved value or NACK;

[0349] Other bits of the N bits except the M bits indicate a reserved value or NACK.

[0350] In some embodiments, the first downlink control information is used to indicate the HARQ-ACK information corresponding to the uplink HARQ process in a bit mapping manner, including at least one of the following:

[0351] For an uplink HARQ process corresponding to uplink transmission in the first type of uplink HARQ process, a value of a bit corresponding to the uplink HARQ process is set according to a demodulation result of the corresponding uplink transmission;

[0352] For an uplink HARQ process that does not correspond to uplink transmission in the first type of uplink HARQ process, a bit corresponding to the uplink HARQ process indicates a reserved value or NACK; for an uplink HARQ process that corresponds to uplink transmission in the second type of uplink HARQ process, a value of the bit corresponding to the uplink HARQ process is set according to a demodulation result of the corresponding uplink transmission;

[0353] For an uplink HARQ process that does not correspond to uplink transmission in the second-type uplink HARQ process, a bit corresponding to the uplink HARQ process indicates a reserved value or NACK.

[0354] In some embodiments, when the first configuration information is carried through radio resource control RRC signaling, the first downlink control information includes M bits, and the first downlink control information indicates HARQ-ACK information corresponding to at least one uplink HARQ process of the M second-type uplink HARQ processes through a bit mapping manner; or

[0355] In a case where the first configuration information is carried by downlink control information, the first downlink control information includes N bits, and the first downlink control information indicates HARQ-ACK information corresponding to at least one uplink HARQ process among the N uplink HARQ processes in a bit mapping manner; or

[0356] When the first configuration information is carried through RRC signaling and downlink control information, the first downlink control information includes N bits, and the first downlink control information indicates HARQ-ACK information corresponding to at least one uplink HARQ process among the N uplink HARQ processes through bit mapping;

[0357] The first configuration information is used to determine a mode corresponding to at least one HARQ process of the terminal device.

[0358] In some embodiments, when the N uplink HARQ processes are all first-type uplink HARQ processes, the first downlink control information is not used to indicate HARQ-ACK information corresponding to at least one uplink HARQ process of the terminal device; or,

[0359] In a case where the N uplink HARQ processes are all first-type uplink HARQ processes, the terminal device does not expect to receive the first downlink control information indicating HARQ-ACK information in a bit mapping manner; or

[0360] In a case where the N uplink HARQ processes are all first-type uplink HARQ processes, the first downlink control information is used to indicate HARQ-ACK information corresponding to at least one uplink HARQ process among the N first-type uplink HARQ processes through bit mapping.

[0361] In some embodiments, the cyclic redundancy check CRC corresponding to the first downlink control information is scrambled by a pre-configured uplink resource radio network temporary identifier PUR-RNTI, and the first downlink control information is associated with an uplink transmission performed using a target uplink HARQ process through PUR resources, wherein the target uplink HARQ process is a first type uplink HARQ process.

[0362] In some embodiments, the first downlink control information includes a first indication field, and the first indication field is used to indicate an ACK or fallback mode.

[0363] In some embodiments, the first downlink control information includes a first indication field, and the first indication field is used to indicate a reserved value or a fallback mode.

[0364] In some embodiments, the mode corresponding to at least one uplink HARQ process of the terminal device is determined based on the first configuration information sent by the network device.

[0365] In some embodiments, the first configuration information is carried by at least one of the following signaling: RRC signaling, downlink control information.

[0366] In some embodiments, the first configuration information is used to indicate the modes corresponding to the N uplink HARQ processes respectively.

[0367] In some embodiments, the first configuration information indicates the modes corresponding to the N uplink HARQ processes respectively through bit mapping.

[0368] In some embodiments, when the first configuration information is carried through RRC signaling, the first configuration information indicates the modes corresponding to the N uplink HARQ processes respectively through bit mapping.

[0369] In some embodiments, the N uplink HARQ processes are uplink HARQ processes of the terminal device in a cell.

[0370] In some embodiments, the first configuration information is used to indicate a mode corresponding to a target uplink HARQ process, and the target uplink HARQ process includes a HARQ process used for at least one uplink transmission of the terminal device.

[0371] In some embodiments, when the first configuration information is carried by downlink control information, the target uplink HARQ process includes the HARQ process used for uplink transmission scheduled by the downlink control information.

[0372] In some embodiments, the first configuration information is used to indicate a mode corresponding to the target uplink HARQ process, wherein:

[0373] In a case where the uplink transmission corresponding to the target uplink HARQ process is scheduled by downlink control information, the first configuration information is carried in the downlink control information; or

[0374] In a case where the uplink transmission corresponding to the target uplink HARQ process uses pre-configured uplink resources PUR, the first configuration information is carried in RRC signaling.

[0375] In some embodiments, the target uplink HARQ process includes multiple uplink HARQ processes, and the first configuration information is used to indicate modes corresponding to the multiple uplink HARQ processes, wherein the modes corresponding to the multiple uplink HARQ processes are the same.

[0376] In some embodiments, the target uplink HARQ process includes multiple uplink HARQ processes, and the first configuration information is used to indicate the modes corresponding to the multiple uplink HARQ processes respectively.

[0377] In some embodiments, the first configuration information is used to indicate that the mode corresponding to the uplink HARQ process is HARQ mode A or HARQ mode B; or

[0378] The first configuration information is used to indicate whether the mode corresponding to the uplink HARQ process is HARQ mode B.

[0379] In some embodiments, the first configuration information is used to indicate that the uplink HARQ process is configured to disable the HARQ-ACK feedback mode or enable the HARQ-ACK feedback mode; or

[0380] The first configuration information is used to indicate whether the uplink HARQ process is configured to disable the HARQ-ACK feedback mode.

[0381] In some embodiments, the communication unit 410 is further configured to:

[0382] Report first capability information to the network device, where the first capability information is used to indicate that the terminal device supports the uplink HARQ process of the terminal device being configured as the first mode.

[0383] Alternatively, in some embodiments, the communication unit may be a communication interface or a transceiver, or an input / output interface of a communication chip or a system on chip. The processing unit may be one or more processors.

[0384] It should be understood that the terminal device 400 according to the embodiment of the present application may correspond to the terminal device in the embodiment of the method of the present application, and the above-mentioned and other operations and / or functions of each unit in the terminal device 400 are respectively for realizing the corresponding processes of the terminal device in the method 200 shown in Figure 2. For the sake of brevity, they will not be repeated here.

[0385] FIG5 is a schematic block diagram of a network device according to an embodiment of the present application. The network device 500 of FIG5 includes:

[0386] The communication unit 510 is used to send first downlink control information to the terminal device, where the first downlink control information is used to determine the hybrid automatic repeat request acknowledgment HARQ-ACK information corresponding to at least one uplink hybrid automatic repeat request HARQ process of the terminal device, wherein the N uplink HARQ processes of the terminal device include at least one first type of uplink HARQ process, the first type of uplink HARQ process corresponds to a first mode, and N is a positive integer.

[0387] In some embodiments, the first type of uplink HARQ process corresponds to a first mode, including:

[0388] The first type of uplink HARQ process corresponds to HARQ mode B; or

[0389] The first type of uplink HARQ process corresponds to a disabled HARQ-ACK feedback mode; or

[0390] The first type of uplink HARQ process is configured as HARQ mode B; or

[0391] The first type of uplink HARQ process is configured to disable the HARQ-ACK feedback mode.

[0392] In some embodiments, the N uplink HARQ processes of the terminal device include M second-type uplink HARQ processes, and the first downlink control information is used to indicate the HARQ-ACK information corresponding to the M second-type uplink HARQ processes, wherein the second-type uplink HARQ process corresponds to the second mode, and M is a positive integer.

[0393] In some embodiments, the second type of uplink HARQ process corresponds to a second mode, including:

[0394] The second type of uplink HARQ process corresponds to HARQ mode A; or

[0395] The second type of uplink HARQ process corresponds to enabling the HARQ-ACK feedback mode; or

[0396] The second type of uplink HARQ process is configured as HARQ mode A; or

[0397] The second type of uplink HARQ process is configured to enable a HARQ-ACK feedback mode.

[0398] In some embodiments, the first downlink control information includes M bits, each bit corresponds to a second type uplink HARQ process, and the first downlink control information is used to indicate the HARQ-ACK information corresponding to the second type uplink HARQ process through bit mapping.

[0399] In some embodiments, each bit corresponds to a second type uplink HARQ process, including:

[0400] The M second-type uplink HARQ processes are mapped one-to-one with the M bits in ascending order of HARQ process index from small to large; or,

[0401] The M second-type uplink HARQ processes are mapped one-to-one with the M bits in a bit order from low to high in ascending order of HARQ process indexes.

[0402] In some embodiments, the first downlink control information is used to indicate HARQ-ACK information corresponding to the second-type uplink HARQ process in a bit mapping manner, including:

[0403] For an uplink HARQ process corresponding to uplink transmission in the second type of uplink HARQ process, a value of a bit corresponding to the uplink HARQ process is set according to a demodulation result of the corresponding uplink transmission; and / or,

[0404] For an uplink HARQ process that does not correspond to uplink transmission in the second-type uplink HARQ process, a bit corresponding to the uplink HARQ process indicates a reserved value or a negative acknowledgement NACK.

[0405] In some embodiments, the first downlink control information includes N bits, each bit corresponds to an uplink HARQ process, wherein M bits of the N bits correspond to M second-type uplink HARQ processes, and the first downlink control information is used to indicate the HARQ-ACK information corresponding to the uplink HARQ process through bit mapping.

[0406] In some embodiments, each bit corresponds to an uplink HARQ process, including:

[0407] The N uplink HARQ processes are mapped one-to-one with the N bits in ascending order of HARQ process index from small to large; or,

[0408] The N uplink HARQ processes are mapped one-to-one with the N bits in a bit order from low to high in ascending order of HARQ process indexes.

[0409] In some embodiments, the first downlink control information is used to indicate the HARQ-ACK information corresponding to the uplink HARQ process in a bit mapping manner, including at least one of the following:

[0410] For an uplink HARQ process corresponding to uplink transmission in the second type of uplink HARQ process, a value of a corresponding bit in the M bits of the uplink HARQ process is set according to a demodulation result of the corresponding uplink transmission;

[0411] For an uplink HARQ process that does not correspond to uplink transmission in the second-type uplink HARQ process, a corresponding bit of the uplink HARQ process in the M bits indicates a reserved value or NACK;

[0412] Other bits of the N bits except the M bits indicate a reserved value or NACK.

[0413] In some embodiments, the first downlink control information is used to indicate the HARQ-ACK information corresponding to the uplink HARQ process in a bit mapping manner, including at least one of the following:

[0414] For an uplink HARQ process corresponding to uplink transmission in the first type of uplink HARQ process, a value of a bit corresponding to the uplink HARQ process is set according to a demodulation result of the corresponding uplink transmission;

[0415] For an uplink HARQ process that does not correspond to uplink transmission in the first type of uplink HARQ process, a bit corresponding to the uplink HARQ process indicates a reserved value or NACK;

[0416] For an uplink HARQ process corresponding to uplink transmission in the second type of uplink HARQ process, a value of a bit corresponding to the uplink HARQ process is set according to a demodulation result of the corresponding uplink transmission;

[0417] For an uplink HARQ process that does not correspond to uplink transmission in the second-type uplink HARQ process, a bit corresponding to the uplink HARQ process indicates a reserved value or NACK.

[0418] In some embodiments, when the first configuration information is carried through radio resource control RRC signaling, the first downlink control information includes M bits, and the first downlink control information indicates HARQ-ACK information corresponding to at least one uplink HARQ process of the M second-type uplink HARQ processes through a bit mapping manner; or

[0419] In a case where the first configuration information is carried by downlink control information, the first downlink control information includes N bits, and the first downlink control information indicates HARQ-ACK information corresponding to at least one uplink HARQ process among the N uplink HARQ processes in a bit mapping manner; or

[0420] When the first configuration information is carried through RRC signaling and downlink control information, the first downlink control information includes N bits, and the first downlink control information indicates HARQ-ACK information corresponding to at least one uplink HARQ process among the N uplink HARQ processes through bit mapping;

[0421] The first configuration information is used to determine a mode corresponding to at least one HARQ process of the terminal device.

[0422] In some embodiments, when the N uplink HARQ processes are all first-type uplink HARQ processes, the first downlink control information is not used to indicate HARQ-ACK information corresponding to at least one uplink HARQ process of the terminal device; or,

[0423] In a case where the N uplink HARQ processes are all first-type uplink HARQ processes, the network device does not send the first downlink control information indicating HARQ-ACK information in a bit mapping manner to the terminal device; or

[0424] In a case where the N uplink HARQ processes are all first-type uplink HARQ processes, the first downlink control information is used to indicate HARQ-ACK information corresponding to at least one uplink HARQ process among the N first-type uplink HARQ processes through bit mapping.

[0425] In some embodiments, the cyclic redundancy check CRC corresponding to the first downlink control information is scrambled by a pre-configured uplink resource radio network temporary identifier PUR-RNTI, and the first downlink control information is associated with an uplink transmission performed using a target uplink HARQ process through PUR resources, wherein the target uplink HARQ process is a first type uplink HARQ process.

[0426] In some embodiments, the first downlink control information includes a first indication field, and the first indication field is used to indicate an ACK or fallback mode.

[0427] In some embodiments, the first downlink control information includes a first indication field, and the first indication field is used to indicate a reserved value or a fallback mode.

[0428] In some embodiments, the communication unit 510 is further configured to:

[0429] First configuration information is sent to the terminal device, where the first configuration information is used to determine a mode corresponding to at least one uplink HARQ process of the terminal device.

[0430] In some embodiments, the first configuration information is carried by at least one of the following signaling: RRC signaling, downlink control information.

[0431] In some embodiments, the first configuration information is used to indicate the modes corresponding to the N uplink HARQ processes respectively.

[0432] In some embodiments, the first configuration information indicates the modes corresponding to the N uplink HARQ processes respectively through bit mapping.

[0433] In some embodiments, when the first configuration information is carried through RRC signaling, the first configuration information indicates the modes corresponding to the N uplink HARQ processes respectively through bit mapping.

[0434] In some embodiments, the N uplink HARQ processes are uplink HARQ processes of the terminal device in a cell.

[0435] In some embodiments, the first configuration information is used to indicate a mode corresponding to a target uplink HARQ process, and the target uplink HARQ process includes a HARQ process used for at least one uplink transmission of the terminal device.

[0436] In some embodiments, when the first configuration information is carried by downlink control information, the target uplink HARQ process includes the HARQ process used for uplink transmission scheduled by the downlink control information.

[0437] In some embodiments, the first configuration information is used to indicate a mode corresponding to the target uplink HARQ process, wherein:

[0438] In a case where the uplink transmission corresponding to the target uplink HARQ process is scheduled by downlink control information, the first configuration information is carried in the downlink control information; or

[0439] In a case where the uplink transmission corresponding to the target uplink HARQ process uses pre-configured uplink resources PUR, the first configuration information is carried in RRC signaling.

[0440] In some embodiments, the target uplink HARQ process includes multiple uplink HARQ processes, and the first configuration information is used to indicate modes corresponding to the multiple uplink HARQ processes, wherein the modes corresponding to the multiple uplink HARQ processes are the same.

[0441] In some embodiments, the target uplink HARQ process includes multiple uplink HARQ processes, and the first configuration information is used to indicate the modes corresponding to the multiple uplink HARQ processes respectively.

[0442] In some embodiments, the first configuration information is used to indicate that the mode corresponding to the uplink HARQ process is HARQ mode A or HARQ mode B; or

[0443] The first configuration information is used to indicate whether the mode corresponding to the uplink HARQ process is HARQ mode B.

[0444] In some embodiments, the first configuration information is used to indicate that the uplink HARQ process is configured to disable the HARQ-ACK feedback mode or enable the HARQ-ACK feedback mode; or

[0445] The first configuration information is used to indicate whether the uplink HARQ process is configured to disable the HARQ-ACK feedback mode.

[0446] In some embodiments, the communication unit 510 is further configured to:

[0447] Receive first capability information reported by the terminal device, where the first capability information is used to indicate that the terminal device supports the uplink HARQ process of the terminal device being configured as the first mode.

[0448] Alternatively, in some embodiments, the communication unit may be a communication interface or a transceiver, or an input / output interface of a communication chip or a system on chip. The processing unit may be one or more processors.

[0449] It should be understood that the network device 500 according to the embodiment of the present application may correspond to the network device in the embodiment of the method of the present application, and the above-mentioned and other operations and / or functions of each unit in the network device 500 are respectively for implementing the corresponding processes of the network device in the method 200 shown in Figure 2. For the sake of brevity, they will not be repeated here.

[0450] Figure 6 is a schematic structural diagram of a communication device 600 provided in an embodiment of the present application. The communication device 600 shown in Figure 6 includes a processor 610, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0451] Optionally, as shown in FIG5 , the communication device 600 may further include a memory 620. The processor 610 may call and execute a computer program from the memory 620 to implement the method in the embodiment of the present application.

[0452] The memory 620 may be a separate device independent of the processor 610 , or may be integrated into the processor 610 .

[0453] Optionally, as shown in FIG5 , the communication device 600 may further include a transceiver 630 , and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, to send information or data to other devices, or to receive information or data sent by other devices.

[0454] The transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include an antenna, and the number of antennas may be one or more.

[0455] Optionally, the communication device 600 may specifically be a network device in an embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the network device in each method in the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0456] Optionally, the communication device 600 may specifically be a mobile terminal / terminal device in an embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the mobile terminal / terminal device in each method in the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0457] Figure 7 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 700 shown in Figure 7 includes a processor 710, which can call and run a computer program from a memory to implement the method according to the embodiment of the present application.

[0458] Optionally, as shown in FIG6 , the chip 700 may further include a memory 720 , wherein the processor 710 may call and execute a computer program from the memory 720 to implement the method in the embodiment of the present application.

[0459] The memory 720 may be a separate device independent of the processor 710 , or may be integrated into the processor 710 .

[0460] Optionally, the chip 700 may further include an input interface 730. The processor 710 may control the input interface 730 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0461] Optionally, the chip 700 may further include an output interface 740. The processor 710 may control the output interface 740 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0462] Optionally, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0463] Optionally, the chip can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0464] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0465] FIG8 is a schematic block diagram of a communication system 900 provided in an embodiment of the present application. As shown in FIG8 , the communication system 900 includes a terminal device 910 and a network device 920 .

[0466] Among them, the terminal device 910 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 920 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they will not be repeated here.

[0467] It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiment can be completed by hardware integrated logic circuits in the processor or software instructions. The above processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The various methods, steps, and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium mature in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0468] It is understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0469] It should be understood that the above-mentioned memories are exemplary but not restrictive. For example, the memories in the embodiments of the present application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM RAM (DR RAM), etc. In other words, the memories in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0470] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.

[0471] Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0472] Optionally, the computer-readable storage medium can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0473] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0474] Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0475] Optionally, the computer program product can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0476] The embodiment of the present application also provides a computer program.

[0477] Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not described here.

[0478] Optionally, the computer program can be applied to the mobile terminal / terminal device in the embodiments of the present application. When the computer program runs on the computer, the computer executes the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0479] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0480] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0481] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0482] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0483] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0484] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0485] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A wireless communication method, characterized in that: include: The terminal device receives first downlink control information sent by the network device; According to the first downlink control information, determine the hybrid automatic retransmission request acknowledgment HARQ-ACK information corresponding to at least one uplink hybrid automatic retransmission request HARQ process of the terminal device, wherein the N uplink HARQ processes of the terminal device include at least one first type of uplink HARQ process, the first type of uplink HARQ process corresponds to a first mode, and N is a positive integer.

2. The method according to claim 1, characterized in that The first type of uplink HARQ process corresponds to the first mode, including: The first type of uplink HARQ process corresponds to HARQ mode B; or The first type of uplink HARQ process corresponds to a disabled HARQ-ACK feedback mode; or The first type of uplink HARQ process is configured as HARQ mode B; or The first type of uplink HARQ process is configured to disable the HARQ-ACK feedback mode.

3. The method according to claim 1 or 2, characterized in that The N uplink HARQ processes of the terminal device include M second-type uplink HARQ processes, and the first downlink control information is used to indicate the HARQ-ACK information corresponding to the M second-type uplink HARQ processes, wherein the second-type uplink HARQ process corresponds to the second mode, and M is a positive integer.

4. The method according to claim 3, characterized in that The second type of uplink HARQ process corresponds to the second mode, including: The second type of uplink HARQ process corresponds to HARQ mode A; or The second type of uplink HARQ process corresponds to enabling the HARQ-ACK feedback mode; or The second type of uplink HARQ process is configured as HARQ mode A; or The second type of uplink HARQ process is configured to enable a HARQ-ACK feedback mode.

5. The method according to claim 3 or 4, characterized in that The first downlink control information includes M bits, each bit corresponds to a second-type uplink HARQ process, and the first downlink control information is used to indicate the HARQ-ACK information corresponding to the second-type uplink HARQ process through bit mapping.

6. The method according to claim 5, characterized in that Each bit corresponds to a second type uplink HARQ process, including: The M second-type uplink HARQ processes are mapped one-to-one with the M bits in ascending order of HARQ process index from small to large; or, The M second-type uplink HARQ processes are mapped one-to-one with the M bits in a bit order from low to high in ascending order of HARQ process indexes.

7. The method according to claim 5 or 6, characterized in that The first downlink control information is used to indicate HARQ-ACK information corresponding to the second-type uplink HARQ process in a bit mapping manner, including: For an uplink HARQ process corresponding to uplink transmission in the second type of uplink HARQ process, a value of a bit corresponding to the uplink HARQ process is set according to a demodulation result of the corresponding uplink transmission; and / or, For an uplink HARQ process that does not correspond to uplink transmission in the second-type uplink HARQ process, a bit corresponding to the uplink HARQ process indicates a reserved value or a negative acknowledgement NACK.

8. The method according to claim 3 or 4, characterized in that The first downlink control information includes N bits, each bit corresponds to an uplink HARQ process, wherein M bits of the N bits correspond to M second-type uplink HARQ processes, and the first downlink control information is used to indicate the HARQ-ACK information corresponding to the uplink HARQ process through bit mapping.

9. The method according to claim 8, characterized in that Each bit corresponds to an uplink HARQ process, including: The N uplink HARQ processes are mapped one-to-one with the N bits in ascending order of HARQ process index from small to large; or, The N uplink HARQ processes are mapped one-to-one with the N bits in a bit order from low to high in ascending order of HARQ process indexes.

10. The method according to claim 8 or 9, characterized in that The first downlink control information is used to indicate the HARQ-ACK information corresponding to the uplink HARQ process in a bit mapping manner, including at least one of the following: For an uplink HARQ process corresponding to uplink transmission in the second type of uplink HARQ process, a value of a corresponding bit in the M bits of the uplink HARQ process is set according to a demodulation result of the corresponding uplink transmission; For an uplink HARQ process that does not correspond to uplink transmission in the second-type uplink HARQ process, a corresponding bit of the uplink HARQ process in the M bits indicates a reserved value or NACK; Other bits of the N bits except the M bits indicate a reserved value or NACK.

11. The method according to claim 8 or 9, characterized in that The first downlink control information is used to indicate the HARQ-ACK information corresponding to the uplink HARQ process in a bit mapping manner, including at least one of the following: For an uplink HARQ process corresponding to uplink transmission in the first type of uplink HARQ process, a value of a bit corresponding to the uplink HARQ process is set according to a demodulation result of the corresponding uplink transmission; For an uplink HARQ process that does not correspond to uplink transmission in the first type of uplink HARQ process, a bit corresponding to the uplink HARQ process indicates a reserved value or NACK; For an uplink HARQ process corresponding to uplink transmission in the second type of uplink HARQ process, a value of a bit corresponding to the uplink HARQ process is set according to a demodulation result of the corresponding uplink transmission; For an uplink HARQ process that does not correspond to uplink transmission in the second-type uplink HARQ process, a bit corresponding to the uplink HARQ process indicates a reserved value or NACK.

12. The method according to any one of claims 1 to 11, characterized in that In a case where the first configuration information is carried through radio resource control (RRC) signaling, the first downlink control information includes M bits, and the first downlink control information indicates HARQ-ACK information corresponding to at least one uplink HARQ process of the M second-type uplink HARQ processes through a bit mapping manner; or When the first configuration information is carried by downlink control information, the first downlink control information includes N bits, and the first downlink control information indicates HARQ-ACK information corresponding to at least one uplink HARQ process of the N uplink HARQ processes in a bit mapping manner; or, When the first configuration information is carried through RRC signaling and downlink control information, the first downlink control information includes N bits, and the first downlink control information indicates HARQ-ACK information corresponding to at least one uplink HARQ process among the N uplink HARQ processes through bit mapping; The first configuration information is used to determine a mode corresponding to at least one HARQ process of the terminal device.

13. The method according to claim 1 or 2, characterized in that The method further comprises: In a case where the N uplink HARQ processes are all first-type uplink HARQ processes, the first downlink control information is not used to indicate HARQ-ACK information corresponding to at least one uplink HARQ process of the terminal device; or In a case where the N uplink HARQ processes are all first-type uplink HARQ processes, the terminal device does not expect to receive the first downlink control information indicating HARQ-ACK information in a bit mapping manner; or In a case where the N uplink HARQ processes are all first-type uplink HARQ processes, the first downlink control information is used to indicate HARQ-ACK information corresponding to at least one uplink HARQ process among the N first-type uplink HARQ processes through bit mapping.

14. The method according to claim 1 or 2, characterized in that The cyclic redundancy check CRC corresponding to the first downlink control information is scrambled by a pre-configured uplink resource radio network temporary identifier PUR-RNTI, and the first downlink control information is associated with an uplink transmission performed through a PUR resource using a target uplink HARQ process, wherein the target uplink HARQ process is a first type uplink HARQ process.

15. The method according to claim 14, characterized in that The first downlink control information includes a first indication field, and the first indication field is used to indicate an ACK or fallback mode.

16. The method according to claim 14, characterized in that The first downlink control information includes a first indication field, and the first indication field is used to indicate a reserved value or a fallback mode.

17. The method according to any one of claims 1 to 16, characterized in that The mode corresponding to at least one uplink HARQ process of the terminal device is determined according to the first configuration information sent by the network device.

18. The method according to claim 17, characterized in that The first configuration information is carried by at least one of the following signalings: RRC signaling, downlink control information.

19. The method according to claim 17 or 18, characterized in that The first configuration information is used to indicate modes corresponding to the N uplink HARQ processes respectively.

20. The method according to claim 19, characterized in that The first configuration information indicates the modes corresponding to the N uplink HARQ processes respectively in a bit mapping manner.

21. The method according to claim 20, characterized in that When the first configuration information is carried through RRC signaling, the first configuration information indicates the modes corresponding to the N uplink HARQ processes respectively through bit mapping.

22. The method according to any one of claims 1 to 21, characterized in that The N uplink HARQ processes are uplink HARQ processes of the terminal device in one cell.

23. The method according to claim 17 or 18, characterized in that The first configuration information is used to indicate a mode corresponding to a target uplink HARQ process, where the target uplink HARQ process includes a HARQ process used for at least one uplink transmission of the terminal device.

24. The method according to claim 23, wherein When the first configuration information is carried by downlink control information, the target uplink HARQ process includes a HARQ process used for uplink transmission scheduled by the downlink control information.

25. The method according to claim 17 or 18, characterized in that The first configuration information is used to indicate the mode corresponding to the target uplink HARQ process, wherein: In a case where the uplink transmission corresponding to the target uplink HARQ process is scheduled by downlink control information, the first configuration information is carried in the downlink control information; or In a case where the uplink transmission corresponding to the target uplink HARQ process uses pre-configured uplink resources PUR, the first configuration information is carried in RRC signaling.

26. The method according to any one of claims 23 to 25, characterized in that The target uplink HARQ process includes multiple uplink HARQ processes, and the first configuration information is used to indicate modes corresponding to the multiple uplink HARQ processes, wherein the modes corresponding to the multiple uplink HARQ processes are the same.

27. The method according to any one of claims 23 to 25, characterized in that The target uplink HARQ process includes multiple uplink HARQ processes, and the first configuration information is used to indicate modes corresponding to the multiple uplink HARQ processes respectively.

28. The method according to any one of claims 17 to 27, characterized in that The first configuration information is used to indicate that the mode corresponding to the uplink HARQ process is HARQ mode A or HARQ mode B; or The first configuration information is used to indicate whether the mode corresponding to the uplink HARQ process is HARQ mode B.

29. The method according to any one of claims 17 to 27, characterized in that The first configuration information is used to indicate that the uplink HARQ process is configured to disable the HARQ-ACK feedback mode or enable the HARQ-ACK feedback mode; or The first configuration information is used to indicate whether the uplink HARQ process is configured to disable the HARQ-ACK feedback mode.

30. The method according to any one of claims 1 to 29, wherein The method further comprises: The terminal device reports first capability information to the network device, where the first capability information is used to indicate that the terminal device supports the uplink HARQ process of the terminal device being configured as the first mode.

31. A wireless communication method, characterized in that: include: A network device sends first downlink control information to a terminal device, where the first downlink control information is used to determine hybrid automatic repeat request acknowledgment HARQ-ACK information corresponding to at least one uplink hybrid automatic repeat request HARQ process of the terminal device, wherein the N uplink HARQ processes of the terminal device include at least one first type of uplink HARQ process, the first type of uplink HARQ process corresponds to a first mode, and N is a positive integer.

32. The method according to claim 31, characterized in that The first type of uplink HARQ process corresponds to the first mode, including: The first type of uplink HARQ process corresponds to HARQ mode B; or The first type of uplink HARQ process corresponds to a disabled HARQ-ACK feedback mode; or The first type of uplink HARQ process is configured as HARQ mode B; or The first type of uplink HARQ process is configured to disable the HARQ-ACK feedback mode.

33. The method according to claim 31 or 32, characterized in that The N uplink HARQ processes of the terminal device include M second-type uplink HARQ processes, and the first downlink control information is used to indicate the HARQ-ACK information corresponding to the M second-type uplink HARQ processes, wherein the second-type uplink HARQ process corresponds to the second mode, and M is a positive integer.

34. The method according to claim 33, wherein The second type of uplink HARQ process corresponds to the second mode, including: The second type of uplink HARQ process corresponds to HARQ mode A; or The second type of uplink HARQ process corresponds to enabling the HARQ-ACK feedback mode; or The second type of uplink HARQ process is configured as HARQ mode A; or The second type of uplink HARQ process is configured to enable a HARQ-ACK feedback mode.

35. The method according to claim 33 or 34, characterized in that The first downlink control information includes M bits, each bit corresponds to a second-type uplink HARQ process, and the first downlink control information is used to indicate the HARQ-ACK information corresponding to the second-type uplink HARQ process through bit mapping.

36. The method according to claim 35, characterized in that Each bit corresponds to a second type uplink HARQ process, including: The M second-type uplink HARQ processes are mapped one-to-one with the M bits in ascending order of HARQ process index from small to large; or, The M second-type uplink HARQ processes are mapped one-to-one with the M bits in a bit order from low to high in ascending order of HARQ process indexes.

37. The method according to claim 35 or 36, characterized in that The first downlink control information is used to indicate HARQ-ACK information corresponding to the second-type uplink HARQ process in a bit mapping manner, including: For an uplink HARQ process corresponding to uplink transmission in the second type of uplink HARQ process, a value of a bit corresponding to the uplink HARQ process is set according to a demodulation result of the corresponding uplink transmission; and / or, For an uplink HARQ process that does not correspond to uplink transmission in the second-type uplink HARQ process, a bit corresponding to the uplink HARQ process indicates a reserved value or a negative acknowledgement NACK.

38. The method according to claim 33 or 34, characterized in that The first downlink control information includes N bits, each bit corresponds to an uplink HARQ process, wherein M bits of the N bits correspond to M second-type uplink HARQ processes, and the first downlink control information is used to indicate the HARQ-ACK information corresponding to the uplink HARQ process through bit mapping.

39. The method according to claim 38, wherein Each bit corresponds to an uplink HARQ process, including: The N uplink HARQ processes are mapped one-to-one with the N bits in ascending order of HARQ process index from small to large; or, The N uplink HARQ processes are mapped one-to-one with the N bits in a bit order from low to high in ascending order of HARQ process indexes.

40. The method according to claim 38 or 39, characterized in that The first downlink control information is used to indicate the HARQ-ACK information corresponding to the uplink HARQ process in a bit mapping manner, including at least one of the following: For an uplink HARQ process corresponding to uplink transmission in the second type of uplink HARQ process, a value of a corresponding bit in the M bits of the uplink HARQ process is set according to a demodulation result of the corresponding uplink transmission; For an uplink HARQ process that does not correspond to uplink transmission in the second-type uplink HARQ process, a corresponding bit of the uplink HARQ process in the M bits indicates a reserved value or NACK; Other bits of the N bits except the M bits indicate a reserved value or NACK.

41. The method according to claim 38 or 39, characterized in that The first downlink control information is used to indicate the HARQ-ACK information corresponding to the uplink HARQ process in a bit mapping manner, including at least one of the following: For an uplink HARQ process corresponding to uplink transmission in the first type of uplink HARQ process, a value of a bit corresponding to the uplink HARQ process is set according to a demodulation result of the corresponding uplink transmission; For an uplink HARQ process that does not correspond to uplink transmission in the first type of uplink HARQ process, a bit corresponding to the uplink HARQ process indicates a reserved value or NACK; For an uplink HARQ process corresponding to uplink transmission in the second type of uplink HARQ process, a value of a bit corresponding to the uplink HARQ process is set according to a demodulation result of the corresponding uplink transmission; For an uplink HARQ process that does not correspond to uplink transmission in the second-type uplink HARQ process, a bit corresponding to the uplink HARQ process indicates a reserved value or NACK.

42. The method according to any one of claims 31 to 41, characterized in that In a case where the first configuration information is carried through radio resource control (RRC) signaling, the first downlink control information includes M bits, and the first downlink control information indicates HARQ-ACK information corresponding to at least one uplink HARQ process of the M second-type uplink HARQ processes through a bit mapping manner; or When the first configuration information is carried by downlink control information, the first downlink control information includes N bits, and the first downlink control information indicates HARQ-ACK information corresponding to at least one uplink HARQ process of the N uplink HARQ processes in a bit mapping manner; or, When the first configuration information is carried through RRC signaling and downlink control information, the first downlink control information includes N bits, and the first downlink control information indicates HARQ-ACK information corresponding to at least one uplink HARQ process among the N uplink HARQ processes through bit mapping; The first configuration information is used to determine a mode corresponding to at least one HARQ process of the terminal device.

43. The method according to claim 31 or 32, characterized in that The method further comprises: In a case where the N uplink HARQ processes are all first-type uplink HARQ processes, the first downlink control information is not used to indicate HARQ-ACK information corresponding to at least one uplink HARQ process of the terminal device; or In a case where the N uplink HARQ processes are all first-type uplink HARQ processes, the network device does not send the first downlink control information indicating HARQ-ACK information in a bit mapping manner to the terminal device; or In a case where the N uplink HARQ processes are all first-type uplink HARQ processes, the first downlink control information is used to indicate HARQ-ACK information corresponding to at least one uplink HARQ process among the N first-type uplink HARQ processes through bit mapping.

44. The method according to claim 31 or 32, characterized in that The cyclic redundancy check CRC corresponding to the first downlink control information is scrambled by a pre-configured uplink resource radio network temporary identifier PUR-RNTI, and the first downlink control information is associated with an uplink transmission performed through a PUR resource using a target uplink HARQ process, wherein the target uplink HARQ process is a first type uplink HARQ process.

45. The method according to claim 44, wherein The first downlink control information includes a first indication field, and the first indication field is used to indicate an ACK or fallback mode.

46. ​​The method according to claim 44, wherein The first downlink control information includes a first indication field, and the first indication field is used to indicate a reserved value or a fallback mode.

47. The method according to any one of claims 31 to 46, wherein The method further comprises: The network device sends first configuration information to the terminal device, where the first configuration information is used to determine a mode corresponding to at least one uplink HARQ process of the terminal device.

48. The method according to claim 47, wherein The first configuration information is carried by at least one of the following signalings: RRC signaling, downlink control information.

49. The method according to claim 47 or 48, characterized in that The first configuration information is used to indicate modes corresponding to the N uplink HARQ processes respectively.

50. The method according to claim 49, wherein The first configuration information indicates the modes corresponding to the N uplink HARQ processes respectively in a bit mapping manner.

51. The method according to claim 50, characterized in that When the first configuration information is carried through RRC signaling, the first configuration information indicates the modes corresponding to the N uplink HARQ processes respectively through bit mapping.

52. The method according to any one of claims 31 to 51, characterized in that The N uplink HARQ processes are uplink HARQ processes of the terminal device in one cell.

53. The method according to claim 47 or 48, characterized in that The first configuration information is used to indicate a mode corresponding to a target uplink HARQ process, where the target uplink HARQ process includes a HARQ process used for at least one uplink transmission of the terminal device.

54. The method according to claim 53, wherein When the first configuration information is carried by downlink control information, the target uplink HARQ process includes a HARQ process used for uplink transmission scheduled by the downlink control information.

55. The method according to claim 47 or 48, characterized in that The first configuration information is used to indicate the mode corresponding to the target uplink HARQ process, wherein: In a case where the uplink transmission corresponding to the target uplink HARQ process is scheduled by downlink control information, the first configuration information is carried in the downlink control information; or In a case where the uplink transmission corresponding to the target uplink HARQ process uses pre-configured uplink resources PUR, the first configuration information is carried in RRC signaling.

56. The method according to any one of claims 53 to 55, wherein: The target uplink HARQ process includes multiple uplink HARQ processes, and the first configuration information is used to indicate modes corresponding to the multiple uplink HARQ processes, wherein the modes corresponding to the multiple uplink HARQ processes are the same.

57. The method according to any one of claims 53 to 55, wherein: The target uplink HARQ process includes multiple uplink HARQ processes, and the first configuration information is used to indicate modes corresponding to the multiple uplink HARQ processes respectively.

58. The method according to any one of claims 47 to 57, wherein: The first configuration information is used to indicate that the mode corresponding to the uplink HARQ process is HARQ mode A or HARQ mode B; or The first configuration information is used to indicate whether the mode corresponding to the uplink HARQ process is HARQ mode B.

59. The method according to any one of claims 47 to 57, wherein: The first configuration information is used to indicate that the uplink HARQ process is configured to disable the HARQ-ACK feedback mode or enable the HARQ-ACK feedback mode; or The first configuration information is used to indicate whether the uplink HARQ process is configured to disable the HARQ-ACK feedback mode.

60. The method according to any one of claims 31 to 59, wherein The method further comprises: The network device receives first capability information reported by the terminal device, where the first capability information is used to indicate that the terminal device supports the uplink HARQ process of the terminal device being configured as the first mode.

61. A terminal device, characterized in that: include: A communication unit, configured to receive first downlink control information sent by a network device; A processing unit is used to determine, based on the first downlink control information, the hybrid automatic repeat request acknowledgment HARQ-ACK information corresponding to at least one uplink hybrid automatic repeat request HARQ process of the terminal device, wherein the N uplink HARQ processes of the terminal device include at least one first type of uplink HARQ process, the first type of uplink HARQ process corresponds to a first mode, and N is a positive integer.

62. A network device, characterized in that include: A communication unit is used to send first downlink control information to a terminal device, where the first downlink control information is used to determine hybrid automatic repeat request acknowledgment HARQ-ACK information corresponding to at least one uplink hybrid automatic repeat request HARQ process of the terminal device, wherein the N uplink HARQ processes of the terminal device include at least one first type of uplink HARQ process, the first type of uplink HARQ process corresponds to a first mode, and N is a positive integer.

63. A terminal device, characterized in that: include: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method according to any one of claims 1 to 30.

64. A network device, characterized in that include: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method according to any one of claims 31 to 60.

65. A chip, characterized in that include: A processor, configured to call and execute a computer program from a memory, so that a device equipped with the chip executes the method according to any one of claims 1 to 30, or the method according to any one of claims 31 to 60.

66. A computer-readable storage medium, characterized in that Used to store a computer program, the computer program causing a computer to execute the method according to any one of claims 1 to 30, or the method according to any one of claims 31 to 60.

67. A computer program product, characterized in that The method comprises computer program instructions which cause a computer to perform the method according to any one of claims 1 to 30 or the method according to any one of claims 31 to 60.

68. A computer program, characterized in that The computer program causes a computer to execute the method according to any one of claims 1 to 30, or the method according to any one of claims 31 to 60.

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