A Hybrid Automatic Repeat Request Feedback Method, Apparatus and Storage Medium

Abstract

The present disclosure relates to a hybrid automatic repeat request feedback method, apparatus, and storage medium, including: receiving downlink control information (DCI), where the DCI includes side control information; determining, according to the DCI, to perform hybrid automatic repeat request (HARQ) feedback to a network device, where the HARQ feedback represents performing HARQ feedback on the DCI. By indicating HARQ feedback on the DCI including side control information through the DCI, different signaling can support different feedback methods. Furthermore, correct reception of the corresponding signaling is ensured, and the robustness of the communication system is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular, to a hybrid automatic repeat request feedback method, apparatus, and storage medium. Background Art

[0002] Currently, a network controlled repeater (NCR) can improve system coverage in a low-cost manner. Among them, the NCR can include two parts, namely, a mobile termination (MT) part and a forwarding (Fwd) part. Among them, the MT part can be used to receive control commands sent by a base station. The control commands can be used to control the behavior of the Fwd part, such as beam indication direction, turning on and off of forwarding, etc.

[0003] The NCR can receive radio resource control (RRC) signaling, medium access control control element (MAC CE) signaling, and dynamic downlink control information (DCI) signaling from the base station. Among them, the RRC signaling and the MAC CE signaling are generally transmitted in a physical downlink shared channel (PDSCH). The 3rd generation partnership project (3GPP) also allows feedback for hybrid automatic repeat-request (HARQ) for the PDSCH. The HARQ feedback includes acknowledgement (ACK) feedback and / or negative acknowledgement (NACK) feedback.

[0004] However, how to perform feedback on the DCI or physical downlink control channel (PDCCH) carrying side control information has not been involved currently. Therefore, how to feedback on the DCI or PDCCH carrying side control information is a problem to be solved. Summary of the Invention

[0005] To overcome the problems existing in the related art, the present disclosure provides a hybrid automatic repeat request feedback method, apparatus, and storage medium.

[0006] According to a first aspect of embodiments of the present disclosure, there is provided a hybrid automatic repeat request (HARQ) feedback method, which is executed by a relay device and includes: receiving downlink control information (DCI) sent by a network device, where the DCI includes side control information; determining whether to perform HARQ feedback to the network device according to the DCI, and the HARQ feedback indicates performing HARQ feedback on the DCI.

[0007] In one implementation, the DCI further includes a HARQ feedback indication field; determining whether to perform HARQ feedback to the network device according to the DCI includes: determining whether to perform HARQ feedback to the network device according to the HARQ feedback indication field.

[0008] In one implementation, determining whether to perform HARQ feedback to the network device according to the HARQ feedback indication field includes: when the HARQ feedback indication field is a first value, performing HARQ feedback on the DCI according to the first value.

[0009] In one implementation, determining whether to perform HARQ feedback to the network device according to the HARQ feedback indication field includes: when the HARQ feedback indication field is a second value, not performing HARQ feedback on the DCI according to the second value.

[0010] In one implementation, the HARQ feedback includes any one of the following: hybrid automatic repeat request acknowledgement (HARQ-ACK); hybrid automatic repeat request negative acknowledgement (HARQ-NACK).

[0011] In one implementation, the HARQ feedback indication field is a dedicated information bit, and the dedicated information bit is only used to indicate whether to perform HARQ feedback.

[0012] In one implementation, the HARQ feedback indication field is a multiplexing information field, and the multiplexing information field is used to jointly indicate whether to perform HARQ feedback and to indicate other information different from HARQ feedback. In one implementation, the method further includes: receiving radio resource control (RRC) signaling sent by the network device, where the RRC signaling is used to indicate the correspondence between the value in the HARQ feedback indication field and whether to perform HARQ feedback.

[0013] In one implementation, determining at least one of the following information based on a predefined rule: the time of HARQ feedback; the time-frequency domain resource of HARQ feedback; the transmission power of HARQ feedback.

[0014] In one implementation, the method further includes: sending a first piece of information to the network device, where the first piece of information is HARQ feedback.

[0015] In one embodiment, the method further includes: sending second information to a network device, where the second information is used to jointly indicate HARQ feedback, and / or is used to indicate other HARQ feedback different from HARQ feedback.

[0016] In one embodiment, the priority of HARQ feedback is higher than the priority of other HARQ feedback.

[0017] In one embodiment, the method further includes: receiving resource indication information sent by the network device, where the resource indication information is used to indicate the physical uplink control channel PUCCH resource for the relay device to send the second information; determining the PUCCH resource according to the resource indication information; sending the second information to the network device, including: sending the second information to the network device based on the PUCCH resource.

[0018] According to a second aspect of the embodiments of the present disclosure, there is provided a hybrid automatic repeat request feedback method, which is executed by a network device and includes: sending downlink control information DCI to a relay device, where the DCI includes side control information, and the DCI is used to instruct the relay device to determine whether to perform hybrid automatic repeat request HARQ feedback to the network device, and the HARQ feedback represents HARQ feedback on the DCI.

[0019] In one embodiment, the DCI further includes a HARQ feedback indication field, and the HARQ feedback indication field is used to indicate whether to perform HARQ feedback to the network device.

[0020] In one embodiment, the HARQ feedback indication field is a first value, and the first value represents performing HARQ feedback on the DCI.

[0021] In one embodiment, the HARQ feedback indication field is a second value, and the second value represents not performing HARQ feedback on the DCI.

[0022] In one embodiment, the HARQ feedback includes any one of the following: hybrid automatic repeat request acknowledgement HARQ-ACK; hybrid automatic repeat request negative acknowledgement HARQ-NACK.

[0023] In one embodiment, the HARQ feedback indication field is a dedicated information bit, and the dedicated information bit is only used to indicate whether to perform HARQ feedback.

[0024] In one embodiment, the HARQ feedback indication field is a multiplexing information field, and the multiplexing information field is used to jointly indicate whether to perform HARQ feedback, and is used to indicate feedback of other information different from HARQ feedback.

[0025] In one embodiment, the DCI further includes a HARQ feedback indication field, and the method further includes: sending radio resource control (RRC) signaling to a relay device, where the RRC signaling is used to indicate the correspondence between the value in the HARQ feedback indication field and whether HARQ feedback is to be performed.

[0026] In one embodiment, at least one of the following information is determined based on a predefined rule: the time of HARQ feedback; the time-frequency domain resources of HARQ feedback; the transmission power of HARQ feedback.

[0027] In one embodiment, the method further includes: receiving first information sent by the relay device, where the first information is HARQ feedback.

[0028] In one embodiment, the method further includes: receiving second information sent by the relay device, where the second information is used to jointly indicate HARQ feedback, and / or is used to indicate other HARQ feedback different from HARQ feedback.

[0029] In one embodiment, the priority of HARQ feedback is higher than the priority of other HARQ feedback.

[0030] In one embodiment, the method further includes: sending resource indication information to the relay device, where the resource indication information is used to indicate the physical uplink control channel (PUCCH) resource for the relay device to send the second information; receiving the second information sent by the relay device, including: receiving the second information sent by the relay device based on the PUCCH resource.

[0031] According to a third aspect of the embodiments of the present disclosure, a hybrid automatic repeat request feedback device is provided. The device includes: a receiving module, configured to receive downlink control information (DCI) sent by a network device, where the DCI includes side control information; a processing module, configured to determine whether to perform hybrid automatic repeat request (HARQ) feedback to the network device according to the DCI, where the HARQ feedback represents HARQ feedback on the DCI.

[0032] In one embodiment, the DCI further includes a HARQ feedback indication field; the processing module is further configured to determine whether to perform HARQ feedback to the network device according to the HARQ feedback indication field.

[0033] In one embodiment, the processing module is further configured to: when the HARQ feedback indication field is a first value, perform HARQ feedback on the DCI according to the first value.

[0034] In one embodiment, the processing module is further configured to: when the HARQ feedback indication field is a second value, not perform HARQ feedback on the DCI according to the second value.

[0035] In one embodiment, the HARQ feedback includes any one of the following: Hybrid Automatic Repeat reQuest - ACKnowledgment (HARQ - ACK); Hybrid Automatic Repeat reQuest - Negative ACKnowledgment (HARQ - NACK).

[0036] In one embodiment, the HARQ feedback indication field is a dedicated information bit, and the dedicated information bit is only used to indicate whether HARQ feedback is performed.

[0037] In one embodiment, the HARQ feedback indication field is a multiplexing information field, and the multiplexing information field is used to jointly indicate whether HARQ feedback is performed, and is also used to indicate other information different from HARQ feedback.

[0038] In one embodiment, the receiving module is further configured to: receive Radio Resource Control (RRC) signaling sent by a network device, where the RRC signaling is used to indicate the correspondence between the value in the HARQ feedback indication field and whether HARQ feedback is performed.

[0039] In one embodiment, at least one of the following information is determined based on a predefined rule: the time of HARQ feedback; the time - frequency domain resources of HARQ feedback; the transmission power of HARQ feedback.

[0040] In one embodiment, the apparatus further includes: a sending module, configured to send first information to a network device, where the first information is HARQ feedback.

[0041] In one embodiment, the apparatus further includes: a sending module, configured to send second information to a network device, where the second information is used to jointly indicate HARQ feedback, and / or is used to indicate other HARQ feedback different from HARQ feedback.

[0042] In one embodiment, the priority of HARQ feedback is higher than the priority of other HARQ feedback.

[0043] In one embodiment, the receiving module is further configured to receive resource indication information sent by a network device, where the resource indication information is used to indicate the Physical Uplink Control Channel (PUCCH) resources for a relay device to send the second information; the processing module is further configured to determine the PUCCH resources according to the resource indication information; and the sending module is further configured to send the second information to the network device based on the PUCCH resources.

[0044] According to a fourth aspect of the embodiments of the present disclosure, a hybrid automatic repeat feedback apparatus is provided. The apparatus includes: a sending module, configured to send Downlink Control Information (DCI) to a relay device, where the DCI includes side control information, and the DCI is used to instruct the relay device to determine whether to perform Hybrid Automatic Repeat reQuest (HARQ) feedback to a network device, and the HARQ feedback represents HARQ feedback on the DCI.

[0045] In one embodiment, the DCI further includes a HARQ feedback indication field, and the HARQ feedback indication field is used to indicate whether to perform HARQ feedback to the network device.

[0046] In one embodiment, the HARQ feedback indication field is a first value, and the first value indicates performing HARQ feedback on the DCI.

[0047] In one embodiment, the HARQ feedback indication field is a second value, and the first value indicates not performing HARQ feedback on the DCI.

[0048] In one embodiment, the HARQ feedback includes any one of the following: Hybrid Automatic Repeat reQuest - ACK (HARQ - ACK); Hybrid Automatic Repeat reQuest - Negative ACK (HARQ - NACK).

[0049] In one embodiment, the HARQ feedback indication field is a dedicated information bit, and the dedicated information bit is only used to indicate whether to perform HARQ feedback.

[0050] In one embodiment, the HARQ feedback indication field is a multiplexing information field, and the multiplexing information field is used to jointly indicate whether to perform HARQ feedback and to indicate other information different from HARQ feedback.

[0051] In one embodiment, the DCI further includes a HARQ feedback indication field, and the sending module is further configured to: send a Radio Resource Control (RRC) signaling to the relay device, where the RRC signaling is used to indicate the correspondence between the value in the HARQ feedback indication field and whether to perform HARQ feedback.

[0052] In one embodiment, determine at least one of the following information based on a predefined rule: the time of HARQ feedback; the time - frequency domain resources of HARQ feedback; the transmission power of HARQ feedback.

[0053] In one embodiment, the apparatus further includes: a receiving module, configured to receive a first piece of information sent by the relay device, where the first piece of information is HARQ feedback.

[0054] In one embodiment, the apparatus further includes: a receiving module, configured to receive a second piece of information sent by the relay device, where the second piece of information is used to jointly indicate HARQ feedback and / or to indicate other HARQ feedback different from HARQ feedback.

[0055] In one embodiment, the priority of HARQ feedback is higher than the priority of other HARQ feedback.

[0056] In one embodiment, the sending module is further configured to send resource indication information to a relay device, where the resource indication information is used to indicate a physical uplink control channel (PUCCH) resource for the relay device to send second information; the receiving module is further configured to receive the second information sent by the relay device based on the PUCCH resource.

[0057] According to a fifth aspect of the embodiments of the present disclosure, there is provided a communication device, including: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to: execute any one of the methods in the first aspect.

[0058] According to a sixth aspect of the embodiments of the present disclosure, there is provided a communication device, including: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to: execute any one of the methods in the second aspect.

[0059] According to a seventh aspect of the embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium, which when the instructions in the storage medium are executed by a processor of a relay device, enables the relay device to execute any one of the methods in the first aspect.

[0060] According to an eighth aspect of the embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium, which when the instructions in the storage medium are executed by a processor of a network device, enables the network device to execute any one of the methods in the second aspect.

[0061] According to a ninth aspect of the embodiments of the present disclosure, there is provided a communication system, including a relay device and a network device, wherein the relay device is configured to execute any one of the methods in the first aspect; the network device is configured to execute any one of the methods in the second aspect.

[0062] The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects: By indicating HARQ feedback for DCI including side control information through DCI, different signaling can support different feedback methods. Thereby ensuring the correct reception of the corresponding signaling and improving the robustness of the communication system.

[0063] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] The accompanying drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure.

[0065] Figure 1 is a schematic diagram of a wireless communication system shown according to an exemplary embodiment.

[0066] Figure 2It is a schematic diagram of a communication scenario shown according to an exemplary embodiment.

[0067] Figure 3 It is a flowchart of a hybrid automatic repeat request (HARQ) feedback method shown according to an exemplary embodiment.

[0068] Figure 4 It is another flowchart of a hybrid automatic repeat request (HARQ) feedback method shown according to an exemplary embodiment.

[0069] Figure 5 It is yet another flowchart of a hybrid automatic repeat request (HARQ) feedback method shown according to an exemplary embodiment.

[0070] Figure 6 It is still another flowchart of a hybrid automatic repeat request (HARQ) feedback method shown according to an exemplary embodiment.

[0071] Figure 7 It is another flowchart of a hybrid automatic repeat request (HARQ) feedback method shown according to an exemplary embodiment.

[0072] Figure 8 It is yet another flowchart of a hybrid automatic repeat request (HARQ) feedback method shown according to an exemplary embodiment.

[0073] Figure 9 It is a schematic diagram of signaling interaction for hybrid automatic repeat request (HARQ) feedback shown according to an exemplary embodiment.

[0074] Figure 10 It is a schematic diagram of a hybrid automatic repeat request (HARQ) feedback device shown according to an exemplary embodiment.

[0075] Figure 11 It is another schematic diagram of a hybrid automatic repeat request (HARQ) feedback device shown according to an exemplary embodiment.

[0076] Figure 12 It is a schematic diagram of a communication device shown according to an exemplary embodiment.

[0077] Figure 13 It is another schematic diagram of a communication device shown according to an exemplary embodiment. Detailed implementation manners

[0078] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present disclosure.

[0079] The communication method involved in the present disclosure can be applied to Figure 1In the wireless communication system 100 shown. The network system may include a network device 110, a relay device 120, and a terminal 130. It can be understood that Figure 1 The wireless communication system shown is only for illustrative purposes. Other network devices may also be included in the wireless communication system. For example, it may also include a core network device, a wireless relay device, and a wireless backhaul device, etc. These are not drawn Figure 1 in the figure. The embodiments of the present disclosure do not limit the number of network devices and terminals included in the wireless communication system.

[0080] Furthermore, it can be understood that the wireless communication system of the embodiments of the present disclosure is a network that provides wireless communication functions. The wireless communication system may adopt different communication technologies, such as code division multiple access (CDMA), wideband code division multiple access (WCDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency-division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), carrier sense multiple access with collision avoidance. According to factors such as the capacity, rate, and latency of different networks, the network can be divided into 2G (generation) network, 3G network, 4G network, or future evolved network, such as the fifth generation wireless communication system (5G) network. The 5G network may also be referred to as NR. For the convenience of description, the present disclosure sometimes simply refers to the wireless communication network as the network.

[0081] Further, the network device 110 involved in the present disclosure may also be referred to as a radio access network device. The radio access network device may be: a base station, an evolved node b (eNB), a home base station, an access point (AP) in a wireless fidelity (WIFI) system, a wireless backhaul node, a transmission point (TP), or a transmission and receiving point (TRP), etc. It may also be a gNB in an NR system, or may also be a component or a part of a device that constitutes a base station. When it is a vehicle-to-everything (V2X) communication system, the network device may also be an in-vehicle device. It should be understood that in the embodiments of the present disclosure, the specific technologies and specific device forms adopted by the network device are not limited.

[0082] Further, the relay device 120 involved in the present disclosure may be a wireless relay node.

[0083] The terminal 130 involved in the present disclosure may also be referred to as a terminal device, a user equipment (UE), a mobile station (MS), a mobile terminal (MT), etc. It may be a device that provides voice and / or data connectivity to a user. For example, the terminal may be a handheld device with a wireless connection function, an in-vehicle device, etc. Currently, some examples of terminals are: a mobile phone, a pocket personal computer (PPC), a palm computer, a personal digital assistant (PDA), a laptop computer, a tablet computer, a wearable device, or an in-vehicle device, etc. In addition, when it is a vehicle-to-everything (V2X) communication system, the terminal device may also be an in-vehicle device. It should be understood that the specific technologies and specific device forms adopted by the terminal in the embodiments of the present disclosure are not limited.

[0084] In the embodiments of the present disclosure, the network device 110, the relay device 120, and the terminal 130 may adopt any feasible wireless communication technology to achieve data transmission with each other. Among them, the transmission channel corresponding to the network device 110 sending data to the relay device 120 is called the downlink channel (DL), and the transmission channel corresponding to the relay device 120 sending data to the terminal 130 may also be called DL. The transmission channel corresponding to the terminal 130 sending data to the relay device 120 is called the uplink channel (UL), and the transmission channel corresponding to the relay device 120 sending data to the network device 110 may also be called UL. It can be understood that the network device involved in the embodiments of the present disclosure may be a base station. Of course, the network device may also be any other possible network device, and the terminal may be any possible terminal, which is not limited in the present disclosure.

[0085] Currently, NCR can improve system coverage in a low-cost manner. Among them, NCR can include two parts, namely the MT part and the Fwd part. As Figure 2 shown in the schematic diagram of the communication scenario, it can be seen that in this communication scenario 200, the MT part 221 in the NCR 220 can receive the control commands sent by the base station 210 through the control link. Among them, the control commands can be used to control the behavior of the Fwd part 222. For example, the behavior on the backhaul link and the access link. Such as, the beam indication direction, the ON and OFF of forwarding, etc. The NCR 220 can forward the data sent by the base station 210 to the terminal 230 based on the behavior of the Fwd part 222.

[0086] In some examples, the MT part of the NCR means that the NCR can also be regarded as a simplified version of the terminal. It can also receive the commands sent by the network device as a terminal and perform corresponding operations. For example, receive control commands and control some forwarding behaviors when acting as a relay based on the control commands, that is, control some behaviors of the Fwd part..

[0087] The NCR can receive RRC signaling, MAC CE signaling, and dynamic DCI signaling from the base station. Among them, the RRC signaling and MAC CE signaling are generally transmitted in the PDSCH. And 3GPP also allows HARQ feedback for the PDSCH. To ensure the correct reception of the signaling and enhance its robustness. Among them, the HARQ feedback can include ACK and / or NACK. However, there is still no agreement on how to perform feedback on the DCI or PDCCH carrying side control information.

[0088] In the related art, HARQ feedback also exists for some special DCIs of the UE. For example, the UE needs to provide feedback for the DCI released by semi-persistent scheduling (SPS).

[0089] Whether HARQ feedback is required for the PDCCH needs to be analyzed specifically for different signaling. For example, the PDCCH that does not schedule the PDSCH, such as the signaling carrying the deactivation of SPS; or, the signaling with low latency requirements, such as the signaling carrying the deactivation of SPS; or, the signaling with high reliability requirements, such as the signaling carrying the indication of the unified transmission configuration indication (TCI).

[0090] Meanwhile, in the side control information, in addition to including beam adjustment information, it may also include ON-OFF information, power control information, time division duplex (TDD) information, etc. Among them, some information such as ON-OFF information will affect subsequent relay forwarding behavior and does not have high latency requirements.

[0091] Therefore, there is an urgent need for a method that can support different feedback characteristics for different signaling. How to provide feedback for the DCI or PDCCH including side control information is a problem that needs to be solved.

[0092] The present disclosure indicates HARQ feedback for the DCI including side control information through the DCI, enabling different signaling to support different feedback methods. Thereby ensuring the correct reception of the corresponding signaling and improving the robustness of the communication system.

[0093] Figure 3 It is a flowchart of a hybrid automatic repeat request feedback method shown according to an exemplary embodiment, as Figure 3 shown, the method is executed by a relay device. Among them, the relay device may be the NCR mentioned above, and the method may include the following steps:

[0094] In step S11, receive the downlink control information DCI sent by the network device.

[0095] In some embodiments, the relay device may receive the DCI sent by the network device. Among them, the DCI includes side control information and is transmitted on the PDCCH.

[0096] For example, the relay device may receive DCI including sidelink control information sent by the network device.

[0097] In step S12, it is determined whether to perform hybrid automatic repeat request (HARQ) feedback to the network device according to the DCI.

[0098] In some embodiments, the relay device may determine whether to perform HARQ feedback to the network device according to the DCI received in S11. Herein, the HARQ feedback indicates that the relay device performs HARQ feedback on the DCI including sidelink control information.

[0099] Herein, whether to perform HARQ feedback to the network device may include performing HARQ feedback and not performing HARQ feedback.

[0100] It can be understood that since the DCI is transmitted on the PDCCH, performing HARQ feedback on the DCI can also be regarded as performing HARQ feedback on the PDCCH that transmits the DCI.

[0101] Through the indication of HARQ feedback on the DCI including sidelink control information in the present disclosure, different signaling can support different feedback methods. Thereby ensuring the correct reception of the corresponding signaling and improving the robustness of the communication system.

[0102] In the hybrid automatic repeat request feedback method provided by the embodiments of the present disclosure, the DCI includes a HARQ feedback indication field; determining whether to perform hybrid automatic repeat request (HARQ) feedback to the network device according to the DCI may include: determining whether to perform HARQ feedback to the network device according to the HARQ feedback indication field.

[0103] In some embodiments, the DCI including sidelink control information sent by the network device received by the relay device may include a HARQ feedback indication field. The HARQ feedback indication field is used to indicate whether the relay device performs HARQ feedback to the network device. The relay device may determine whether to perform HARQ feedback to the network device according to the HARQ feedback indication field.

[0104] For example, the HARQ feedback indication field may indicate that the relay device performs HARQ feedback to the network device on the DCI including sidelink control information. Or, the HARQ feedback indication field may indicate that the relay device does not perform HARQ feedback to the network device on the DCI including sidelink control information.

[0105] For example, the HARQ feedback may include HARQ-ACK or HARQ-NACK.

[0106] The present disclosure indicates whether to perform HARQ feedback on DCI including sidelink control information through the HARQ feedback indication field in DCI, so that different signaling can support different feedback methods. Thereby ensuring the correct reception of the corresponding signaling and improving the robustness of the communication system.

[0107] In the hybrid automatic repeat request feedback method provided by the embodiments of the present disclosure, it is determined whether to perform HARQ feedback to a network device according to the HARQ feedback indication field, including: when the HARQ feedback indication field is a first value, perform HARQ feedback on the DCI according to the first value.

[0108] In some embodiments, the HARQ feedback indication field may be a first value. In this case, the first value of the HARQ feedback indication field may indicate to perform HARQ feedback on the DCI including sidelink control information.

[0109] For example, when the HARQ feedback indication field is a first value, the relay device performs HARQ-ACK feedback on the DCI including sidelink control information according to the first value.

[0110] For another example, when the HARQ feedback indication field is a first value, the relay device performs HARQ-NACK feedback on the DCI including sidelink control information according to the first value.

[0111] It can be understood that if the DCI including sidelink control information has low requirements for latency, HARQ feedback can be performed on the DCI including sidelink control information.

[0112] The present disclosure indicates to perform HARQ feedback on the DCI including sidelink control information by setting the HARQ feedback indication field to a first value, so that different signaling can support different feedback methods. Thereby ensuring the correct reception of the corresponding signaling and improving the robustness of the communication system.

[0113] In the hybrid automatic repeat request feedback method provided by the embodiments of the present disclosure, it is determined whether to perform HARQ feedback to a network device according to the HARQ feedback indication field, including: when the HARQ feedback indication field is a second value, do not perform HARQ feedback on the DCI including sidelink control information according to the second value.

[0114] In some embodiments, the HARQ feedback indication field may be a second value. In this case, the second value of the HARQ feedback indication field may indicate not to perform HARQ feedback on the DCI including sidelink control information.

[0115] For example, when the HARQ feedback indication field is a second value, the relay device does not perform HARQ-ACK feedback on the DCI including sidelink control information according to the second value.

[0116] For another example, when the HARQ feedback indication field has a second value, the relay device does not perform HARQ-NACK feedback on the DCI including side control information according to the second value.

[0117] It can be understood that when the DCI including side control information has high requirements for latency, HARQ feedback may not be performed on the DCI including side control information.

[0118] In the present disclosure, by setting the HARQ feedback indication field to a second value to indicate that HARQ feedback is not performed on the DCI including side control information, different signaling can support different feedback methods. Thereby ensuring the correct reception of the corresponding signaling and enhancing the robustness of the communication system.

[0119] In the hybrid automatic repeat request feedback method provided by the embodiments of the present disclosure, the HARQ feedback includes any one of the following: hybrid automatic repeat request acknowledgement HARQ-ACK; hybrid automatic repeat request negative acknowledgement HARQ-NACK.

[0120] In some embodiments, the HARQ feedback may be a hybrid automatic repeat request acknowledgement HARQ-ACK.

[0121] For example, when the relay device correctly demodulates the side control information, it may send HARQ-ACK to the network device.

[0122] In some embodiments, the HARQ feedback may be a hybrid automatic repeat request negative acknowledgement HARQ-NACK.

[0123] For example, when the relay device does not correctly demodulate the side control information, it may send HARQ-NACK to the network device.

[0124] The present disclosure can support various HARQ feedback information to adapt to various communication scenarios. Thereby ensuring the correct reception of the corresponding signaling and enhancing the robustness of the communication system.

[0125] In the hybrid automatic repeat request feedback method provided by the embodiments of the present disclosure, the HARQ feedback indication field is a dedicated information bit, and the dedicated information bit is only used to indicate whether HARQ feedback is performed.

[0126] In some embodiments, the HARQ feedback indication field may be a dedicated information bit, and the dedicated information bit may be only used to indicate whether HARQ feedback is performed on the DCI including side control information.

[0127] For example, a dedicated information bit may be added to the DCI, such as a HARQ feedback (feedback) enable (enable) / disable (disable) information bit.

[0128] For example, when the HARQ feedback enable / disable information bit has a first value, it can be represented as enable, which indicates that the relay device needs to perform HARQ feedback on the DCI including side control information. It can also be understood as indicating that the relay device needs to perform HARQ feedback on the PDCCH that transmits the DCI including side control information. For example, it can be to send HARQ-ACK or send HARQ-NACK.

[0129] For another example, when the HARQ feedback enable / disable information bit has a second value, it can be represented as disable, which indicates that the relay device does not need to perform HARQ feedback on the DCI including side control information. It can also be understood as indicating that the relay device does not need to perform HARQ feedback on the PDCCH that transmits the DCI including side control information. For example, HARQ-ACK and HARQ-NACK may not be sent.

[0130] For example, the HARQ feedback enable / disable information bit can be a 1-bit information bit, the first value can be 1, and the second value can be 0. Or, the first value can be 0 and the second value can be 1. The present disclosure does not limit the specific values of the first value and the second data.

[0131] The present disclosure adds a dedicated information bit in the DCI specifically for indicating whether to perform HARQ feedback on the DCI including side control information, so that different signaling can support different feedback methods. Thereby ensuring the correct reception of the corresponding signaling and improving the robustness of the communication system.

[0132] In the hybrid automatic repeat request feedback method provided by the embodiments of the present disclosure, the HARQ feedback indication field is a multiplexing information field, and the multiplexing information field is used to jointly indicate whether to perform HARQ feedback and to indicate other information different from HARQ feedback.

[0133] In some embodiments, the HARQ feedback indication field can be a multiplexing information field, that is, an existing information field in the DCI. And this information field has been used to indicate other information different from the above HARQ feedback. That is to say, the HARQ feedback indication field can multiplex the existing information field in the DCI as the multiplexing information field. So that the multiplexing information field can be used to jointly indicate whether to perform HARQ feedback on the DCI including side control information and to indicate any other information different from the above HARQ feedback.

[0134] For example, the HARQ feedback indication field can multiplex the HARQ process identity document (ID) as the multiplexing information field for indication.

[0135] For example, when the HARQ process ID is the first value, it may indicate that the relay device needs to perform HARQ feedback on the DCI including side control information. It can also be understood as indicating that the relay device needs to perform HARQ feedback on the PDCCH that transmits the DCI including side control information. For example, HARQ-ACK or HARQ-NACK may be sent.

[0136] For another example, when the HARQ process ID is the second value, it may indicate that the relay device does not need to perform HARQ feedback on the DCI including side control information. It can also be understood as indicating that the relay device does not need to perform HARQ feedback on the PDCCH that transmits the DCI including side control information. For example, HARQ-ACK and HARQ-NACK may not be sent.

[0137] For example, the first value of the HARQ process ID may be 0, and the second value may be non-zero. Alternatively, the first value may be any value, and the second value may be a value different from the first value. The present disclosure does not limit the specific values of the first value and the second data.

[0138] In some embodiments, the HARQ feedback indication field may re-translate any existing information field in the DCI and use it as a multiplexed information field. This is used to jointly indicate whether HARQ feedback is performed and other information different from HARQ feedback.

[0139] Among them, the multiplexed information field can indicate whether HARQ feedback is performed and other information different from HARQ feedback at the same time. For example, the highest bit of the modulation and coding scheme (MCS) field is used to indicate whether HARQ feedback is performed, and the remaining bits are used to indicate the modulation and coding scheme.

[0140] For another example, the multiplexed information field can also indicate whether HARQ feedback is performed or other information different from HARQ feedback in different situations. For example, in a specific situation, such as under a specific radio network temporary identity (RNTI) scrambling method 1, it indicates whether HARQ feedback is performed, and under a specific RNTI scrambling method 2, it indicates other information different from HARQ feedback.

[0141] The present disclosure multiplexes the existing information field in the DCI to indicate whether to perform HARQ feedback on the DCI including side control information, so that different signaling can support different feedback methods. This further ensures the correct reception of the corresponding signaling and improves the robustness of the communication system.

[0142] In the hybrid automatic repeat request (HARQ) feedback method provided by the embodiments of the present disclosure, Figure 4 It is a flowchart of another HARQ feedback method shown according to an exemplary embodiment. As Figure 4 shown, the method may further include the following steps:

[0143] In step S21, a radio resource control (RRC) signaling sent by a network device is received.

[0144] In some embodiments, a relay device may receive the RRC signaling sent by the network device. The RRC signaling may be used to indicate the correspondence between the value in the HARQ feedback indication field and whether to perform HARQ feedback.

[0145] For example, when the HARQ feedback indication field is a dedicated information bit, the RRC signaling may be used to indicate the correspondence between the first value and / or the second value in the dedicated information bit and whether to perform HARQ feedback. Such as indicating at least one of the following correspondences: the first value indicates sending HARQ-ACK or HARQ-NACK; the first value indicates not sending HARQ-ACK and HARQ-NACK; the second value indicates sending HARQ-ACK or HARQ-NACK; the second value indicates not sending HARQ-ACK and HARQ-NACK.

[0146] Again, for example, when the HARQ feedback indication field is a multiplexing information field, the RRC signaling may be used to indicate the correspondence between the first value and / or the second value in the multiplexing information field and whether to perform HARQ feedback. Such as indicating at least one of the following correspondences: the first value indicates sending HARQ-ACK or HARQ-NACK; the first value indicates not sending HARQ-ACK and HARQ-NACK; the second value indicates sending HARQ-ACK or HARQ-NACK; the second value indicates not sending HARQ-ACK and HARQ-NACK.

[0147] The present disclosure can indicate the correspondence between the value in the HARQ feedback indication field and whether to perform HARQ feedback through RRC, so as to indicate whether to perform HARQ feedback on the downlink control information (DCI) including side control information through the value in the HARQ feedback indication field, so that different signaling can support different feedback methods. Furthermore, the correct reception of the corresponding signaling is ensured, and the robustness of the communication system is improved.

[0148] In the HARQ feedback method provided by the embodiments of the present disclosure, at least one of the following information is determined based on a predefined rule: the time of HARQ feedback; the time-frequency domain resource of HARQ feedback; the transmission power of HARQ feedback.

[0149] Among them, in some embodiments, in order to reduce the overhead related to HARQ indication, at least one of the information on the time of HARQ feedback, the time-frequency domain resources of HARQ feedback, and the transmission power of HARQ feedback can be determined in a predefined and / or preconfigured manner.

[0150] In some embodiments, the time of HARQ feedback can be determined in a predefined manner. For example, it can be assumed that the slot in which the relay device receives the DCI in the PDCCH is slot#0, then it can be predefined that the relay device performs HARQ feedback on the DCI in the 4th slot after slot#0. Obviously, in this case, the DCI does not need to include a time interval indication, such as a time interval indication similar to K1.

[0151] In some embodiments, the time-frequency domain resources of HARQ feedback can be configured in a preconfigured manner. It can be understood that the time-frequency domain resources include time-domain resources and frequency-domain resources. The time-domain resources can be symbols, for example, and the frequency-domain resources can be subcarriers. For example, a set of physical uplink control channel (PUCCH) resources can be preconfigured through RRC signaling. It can be understood that this set of PUCCH resources includes at least one PUCCH resource. When the relay device needs to perform HARQ feedback on the DCI transmitted in the PDCCH, it can select a PUCCH resource from this set of PUCCH resources for HARQ feedback. Obviously, in this case, the DCI does not need to include a PUCCH resource indicator.

[0152] For example, when a set of preconfigured PUCCH resources includes one PUCCH resource, the relay device can select this PUCCH resource for HARQ feedback. Another example is that when a set of preconfigured PUCCH resources includes multiple PUCCH resources, the relay device can select any one of the PUCCH resources in this set of PUCCH resources for HARQ feedback. It can be selected from any one of the PUCCH resources in this set of PUCCH resources according to a predefined rule or as stipulated in the protocol. The present disclosure does not make a limitation.

[0153] In some embodiments, the transmission power of HARQ feedback can be determined in a predefined manner. For example, apply PUCCH power control.

[0154] Of course, any one of the information on the time of HARQ feedback, the time-frequency domain resources of HARQ feedback, and the transmission power of HARQ feedback can be determined in a predefined and / or preconfigured manner; or the time of HARQ feedback and the time-frequency domain resources of HARQ feedback can be determined; or the time of HARQ feedback and the transmission power of HARQ feedback can be determined; or the time-frequency domain resources of HARQ feedback and the transmission power of HARQ feedback can be determined; or the time of HARQ feedback, the time-frequency domain resources of HARQ feedback, and the transmission power of HARQ feedback can be determined.

[0155] The present disclosure preconfigures various parameters related to HARQ indication to reduce the overhead related to HARQ indication, thereby saving resources and improving the efficiency of HARQ feedback.

[0156] In the hybrid automatic repeat request feedback method provided by the embodiments of the present disclosure, the method further includes: sending first information to a network device, where the first information is HARQ feedback.

[0157] In some embodiments, a relay device may send first information to a network device. The first information is used to describe the HARQ feedback on a DCI including sidelink control information. It can be understood that the first information is the above-mentioned HARQ feedback.

[0158] For example, a relay device may send first information to a network device. The first information may be a HARQ bit. The HARQ bit may only describe the HARQ feedback on a DCI including sidelink control information. That is to say, the HARQ bit is not multiplexed with other HARQ feedbacks. The HARQ bit may indicate HARQ-ACK or HARQ-NACK.

[0159] It can be understood that the relay device does not expect other HARQ feedback bits to be fed back in the slot for HARQ feedback on a DCI including sidelink control information (or HARQ feedback on the PDCCH transmitting the DCI including sidelink control information). Therefore, when there are other HARQ feedback bits to be fed back in the slot for HARQ feedback on a DCI including sidelink control information (or HARQ feedback on the PDCCH transmitting the DCI including sidelink control information), the relay device may discard the other HARQ feedback bits to be fed back. So that the HARQ feedback information only includes the HARQ feedback describing the DCI including sidelink control information.

[0160] The present disclosure enables different signaling to support different feedback methods by sending HARQ feedback information that only describes HARQ feedback for DCI including sidelink control information to a network device. Thereby ensuring the correct reception of the corresponding signaling and enhancing the robustness of the communication system.

[0161] In the hybrid automatic repeat request feedback method provided by an embodiment of the present disclosure, the method further includes: sending second information to a network device, where the second information is used to jointly indicate HARQ feedback and / or is used to indicate other HARQ feedback different from HARQ feedback.

[0162] In some embodiments, a relay device may send second information to a network device. The second information is used to jointly indicate HARQ feedback. And / or, the second information is further used to indicate any other HARQ feedback different from HARQ feedback. That is to say, the second information may be information in which HARQ feedback is multiplexed with any other HARQ feedback.

[0163] For example, a relay device may send second information to a network device. The second information may be a HARQ bit. The HARQ bit can be used to describe both HARQ feedback for DCI including sidelink control information and other HARQ feedback different from HARQ feedback for DCI including sidelink control information. Wherein, the HARQ bit may represent HARQ-ACK feedback or HARQ-NACK.

[0164] The present disclosure enables different signaling to support different feedback methods by sending HARQ feedback information multiplexed with other HARQ feedback to a network device. Thereby ensuring the correct reception of the corresponding signaling and enhancing the robustness of the communication system.

[0165] In the hybrid automatic repeat request feedback method provided by an embodiment of the present disclosure, the priority of HARQ feedback is higher than the priority of other HARQ feedback.

[0166] In some embodiments, when the above HARQ feedback can be multiplexed with other HARQ feedback, the priority of HARQ feedback is higher than the priority of other HARQ feedback. That is, the priority of HARQ feedback for DCI including sidelink control information can be set higher than the priority of other HARQ feedback.

[0167] For example, when the PUCCH resource is only sufficient to carry 2 bits of information and the number of HARQ bits is 3, 1 bit of information needs to be discarded. At this time, the bit information with a higher priority can be preferentially retained through the priority method. When the HARQ feedback priority of the DCI including side control information is set to be higher than the priority of other HARQ feedbacks, the bits corresponding to other HARQ feedbacks will be preferentially discarded, while the bits corresponding to the HARQ feedback of the DCI including side control information will be retained.

[0168] The present disclosure sets the HARQ feedback priority so that when the PUCCH resource is insufficient, the HARQ feedback of the DCI including side control information can be preferentially retained, enabling different signaling to support different feedback methods. Furthermore, the correct reception of the corresponding signaling is ensured, enhancing the robustness of the communication system.

[0169] In the hybrid automatic repeat request feedback method provided by the embodiments of the present disclosure, Figure 5 is another flowchart of a hybrid automatic repeat request feedback method shown according to an exemplary embodiment. As Figure 5 shown, the method may further include the following steps:

[0170] In step S31, resource indication information sent by a network device is received.

[0171] In some embodiments, a relay device may receive resource indication information sent by a network device. The resource indication information is used to indicate the PUCCH resource for the relay device to send the second information.

[0172] For example, the relay device may receive one or more resource indication information sent by the network device.

[0173] In step S32, the PUCCH resource is determined according to the resource indication information.

[0174] In some embodiments, the relay device may determine the PUCCH resource for sending the second information according to the one or more resource indication information received in S31.

[0175] For example, the PUCCH resource may be the PUCCH resource indicated by the resource indication information received from the network device for the last time before the time slot for HARQ feedback. Of course, the PUCCH resource may also be the PUCCH resource indicated by the resource indication information received from the network device for any Nth time before the time slot for HARQ feedback, which is not limited in the present disclosure.

[0176] For example, when the HARQ feedback of the DCI including side control information can be multiplexed with other HARQ feedbacks, the relay device receives resource indication information 1 in slot #1, indicating to feedback HARQ 1 on PUCCH resource #1 in slot #9. The relay device may also receive resource indication information 2 in slot #3, indicating to feedback HARQ2 on PUCCH resource #2 in slot #9. The relay device may determine to perform HARQ feedback on PUCCH resource #2 in slot #9.

[0177] In step S33, send the second information to the network device based on the PUCCH resource.

[0178] In some embodiments, the relay device may send the second information to the network device on the PUCCH resource determined in S32.

[0179] For example, the relay device may feedback HARQ 1 and HARQ 2 together on PUCCH resource #2 in slot #9. Among them, one of HARQ 1 and HARQ 2 is the HARQ feedback of the DCI including side control information; the other is other HARQ feedback.

[0180] It can be understood that the PUCCH resource for sending the second information may be determined according to the PUCCH resource indicated by the scheduling closest to the feedback time slot of this time.

[0181] The present disclosure provides a method for determining the PUCCH resource for sending HARQ feedback information, so that when the HARQ feedback of the DCI including side control information can be multiplexed with other HARQ feedbacks, the corresponding PUCCH can be selected to send the corresponding HARQ feedback information, so that different signaling can support different feedback methods. Furthermore, the correct reception of the corresponding signaling is ensured, and the robustness of the communication system is improved.

[0182] Based on the same concept, the present disclosure also provides a hybrid automatic repeat request feedback method applied to a network device.

[0183] Figure 6 is another flowchart of a hybrid automatic repeat request feedback method shown according to an exemplary embodiment, as Figure 6 shown, the method is executed by the network device. The method may include the following steps:

[0184] In step S41, send downlink control information DCI to the relay device.

[0185] In some embodiments, a network device may send DCI to a relay device. The DCI includes sidelink control information, is transmitted on a PDCCH, and is used to instruct the relay device to determine whether to perform HARQ feedback to the network device. HARQ feedback means performing HARQ feedback on the DCI including sidelink control information.

[0186] For example, the network device sends DCI including sidelink control information to the relay device. The DCI is used for the relay device to determine whether to perform HARQ feedback on the DCI including sidelink control information.

[0187] For example, whether to perform HARQ feedback to the network device may include performing HARQ feedback and not performing HARQ feedback.

[0188] It can be understood that since the DCI is transmitted on the PDCCH, performing HARQ feedback on the DCI can also be considered as performing HARQ feedback on the PDCCH that transmits the DCI.

[0189] Through the indication of HARQ feedback on the DCI including sidelink control information in the present disclosure, different signaling can support different feedback methods. Thereby ensuring the correct reception of the corresponding signaling and improving the robustness of the communication system.

[0190] In the hybrid automatic repeat request feedback method provided by the embodiments of the present disclosure, the DCI further includes a HARQ feedback indication field, and the HARQ feedback indication field is used to indicate whether to perform HARQ feedback to the network device.

[0191] In some embodiments, in the DCI including sidelink control information sent by the network device, a HARQ feedback indication field may also be included. The HARQ feedback indication field is used to indicate whether the relay device performs HARQ feedback to the network device. For example, whether the relay device performs HARQ feedback to the network device on the DCI including sidelink control information.

[0192] For example, the HARQ feedback indication field may indicate that the relay device performs HARQ feedback to the network device on the DCI including sidelink control information. Or, the HARQ feedback indication field may indicate that the relay device does not perform HARQ feedback to the network device on the DCI including sidelink control information.

[0193] For example, HARQ feedback may be HARQ-ACK or HARQ-NACK.

[0194] Through the HARQ feedback indication field in the DCI, the present disclosure indicates whether the relay device performs HARQ feedback on the DCI including sidelink control information, so that different signaling can support different feedback methods. Thereby ensuring the correct reception of the corresponding signaling and improving the robustness of the communication system.

[0195] In the hybrid automatic repeat request (HARQ) feedback method provided by an embodiment of the present disclosure, the HARQ feedback indication field is a first value, and the first value indicates HARQ feedback for a downlink control information (DCI).

[0196] In some embodiments, the HARQ feedback indication field may be the first value. In this case, the first value of the HARQ feedback indication field may indicate HARQ feedback for a DCI including side control information.

[0197] For example, the HARQ feedback indication field is the first value, and the first value indicates HARQ-ACK feedback for a DCI including side control information.

[0198] For another example, the HARQ feedback indication field is the first value, and the first value indicates HARQ-NACK feedback for a DCI including side control information.

[0199] It can be understood that if the DCI including side control information has low requirements for latency, HARQ feedback can be performed on the DCI including side control information.

[0200] The present disclosure uses the first value of the HARQ feedback indication field to indicate HARQ feedback for a DCI including side control information, so that different signaling can support different feedback methods. This ensures the correct reception of the corresponding signaling and improves the robustness of the communication system.

[0201] In the hybrid automatic repeat request (HARQ) feedback method provided by an embodiment of the present disclosure, the HARQ feedback indication field is a second value, and the second value indicates no HARQ feedback for a DCI including side control information.

[0202] In some embodiments, the HARQ feedback indication field may be the second value. In this case, the second value of the HARQ feedback indication field may indicate no HARQ feedback for a DCI including side control information.

[0203] For example, the HARQ feedback indication field is the second value, and the second value indicates no HARQ-ACK feedback for a DCI including side control information.

[0204] For another example, the HARQ feedback indication field is the second value, and the second value indicates no HARQ-NACK feedback for a DCI including side control information.

[0205] It can be understood that if the DCI including side control information has high requirements for latency, HARQ feedback may not be performed on the DCI including side control information.

[0206] The present disclosure indicates that the HARQ feedback indication field is a second value to indicate that the DCI including side control information does not perform HARQ feedback, so that different signaling can support different feedback methods. Furthermore, the correct reception of the corresponding signaling is ensured, and the robustness of the communication system is improved.

[0207] In the hybrid automatic repeat request feedback method provided by the embodiments of the present disclosure, the HARQ feedback includes any one of the following: hybrid automatic repeat request acknowledgement HARQ-ACK; hybrid automatic repeat request negative acknowledgement HARQ-NACK.

[0208] In some embodiments, the HARQ feedback may be a hybrid automatic repeat request acknowledgement HARQ-ACK.

[0209] For example, when the relay device correctly demodulates the side control information, it may send HARQ-ACK to the network device.

[0210] In some embodiments, the HARQ feedback may be a hybrid automatic repeat request negative acknowledgement HARQ-NACK.

[0211] For example, when the relay device does not correctly demodulate the side control information, it may send HARQ-NACK to the network device.

[0212] The present disclosure can support feedback information of multiple HARQs to adapt to multiple communication scenarios. Furthermore, the correct reception of the corresponding signaling is ensured, and the robustness of the communication system is improved.

[0213] In the hybrid automatic repeat request feedback method provided by the embodiments of the present disclosure, the HARQ feedback indication field is a dedicated information bit, and the dedicated information bit is only used to indicate whether to perform HARQ feedback.

[0214] In some embodiments, the HARQ feedback indication field may be a dedicated information bit, and the dedicated information bit may be only used to indicate whether to perform HARQ feedback on the DCI including side control information.

[0215] For example, a dedicated information bit may be added to the DCI, such as the HARQ feedback enable / disable information bit.

[0216] For example, when the HARQ feedback enable / disable information bit is a first value, it may be expressed as enable, that is, it indicates that the relay device needs to perform HARQ feedback on the DCI including side control information. It can also be understood that it indicates that the relay device needs to perform HARQ feedback on the PDCCH transmitting the DCI including side control information. For example, it may be to send HARQ-ACK or send HARQ-NACK.

[0217] For another example, when the HARQ feedback enable / disable information bit has a second value, it can be represented as "disable", which indicates that the relay device does not need to perform HARQ feedback on the DCI including side control information. It can also be understood as indicating that the relay device does not need to perform HARQ feedback on the PDCCH that transmits the DCI including side control information. For example, HARQ-ACK and HARQ-NACK may not be sent.

[0218] For example, the HARQ feedback enable / disable information bit can be a 1-bit information bit, the first value can be 1, and the second value can be 0. Alternatively, the first value can be 0 and the second value can be 1. The present disclosure does not limit the specific values of the first value and the second data.

[0219] By adding a dedicated information bit specifically for indicating whether to perform HARQ feedback on the DCI including side control information in the DCI, the present disclosure enables different signaling to support different feedback methods. Thereby ensuring the correct reception of the corresponding signaling and enhancing the robustness of the communication system.

[0220] In the hybrid automatic repeat request feedback method provided by the embodiments of the present disclosure, the HARQ feedback indication field is a multiplexing information field, and the multiplexing information field is used to jointly indicate whether to perform HARQ feedback and to indicate other information different from HARQ feedback.

[0221] In some embodiments, the HARQ feedback indication field can be a multiplexing information field, that is, an existing information field in the DCI. And this information field has been used to indicate other information different from the above HARQ feedback. That is to say, the HARQ feedback indication field can multiplex the existing information field in the DCI as the multiplexing information field. So that the multiplexing information field can be used to jointly indicate whether to perform HARQ feedback on the DCI including side control information and to indicate any other information different from the above HARQ feedback.

[0222] For example, the HARQ feedback indication field can multiplex the HARQ process ID as the multiplexing information field for indication.

[0223] For example, when the HARQ process ID has a first value, it can indicate that the relay device needs to perform HARQ feedback on the DCI including side control information. It can also be understood as indicating that the relay device needs to perform HARQ feedback on the PDCCH that transmits the DCI including side control information. For example, HARQ-ACK or HARQ-NACK may be sent.

[0224] For another example, when the HARQ process ID is the second value, it may indicate that the relay device does not need to perform HARQ feedback on the DCI including side control information. It can also be understood as indicating that the relay device does not need to perform HARQ feedback on the PDCCH that transmits the DCI including side control information. For example, HARQ-ACK and HARQ-NACK may not be sent.

[0225] For example, the first value of the HARQ process ID may be 0, and the second value may be non-zero. Alternatively, the first value may be any value, and the second value may be a value different from the first value. The present disclosure does not limit the specific values of the first value and the second data.

[0226] In some embodiments, the HARQ feedback indication field may re-interpret any existing information field in the DCI and use it as a multiplexed information field. This is used to jointly indicate whether to perform HARQ feedback and other information different from HARQ feedback.

[0227] Among them, the multiplexed information field can indicate whether to perform HARQ feedback and other information different from HARQ feedback at the same time. For example, the highest bit of the MCS field is used to indicate whether to perform HARQ feedback, and the remaining bits are used to indicate the modulation and coding method.

[0228] For another example, the multiplexed information field can also indicate whether to perform HARQ feedback or other information different from HARQ feedback in different situations. For example, in a specific situation, such as under a specific RNTI scrambling method 1, it indicates whether to perform HARQ feedback, and under a specific RNTI scrambling method 2, it indicates other information different from HARQ feedback.

[0229] The present disclosure multiplexes the existing information field in the DCI to indicate whether to perform HARQ feedback on the DCI including side control information, so that different signaling can support different feedback methods. This ensures the correct reception of the corresponding signaling and improves the robustness of the communication system.

[0230] In the hybrid automatic repeat request feedback method provided by the embodiments of the present disclosure, Figure 7 is another flowchart of a hybrid automatic repeat request feedback method shown according to an exemplary embodiment. As Figure 7 shown, the DCI further includes a HARQ feedback indication field, and the method may further include the following steps:

[0231] In step S51, a radio resource control (RRC) signaling is sent to the relay device.

[0232] In some embodiments, a network device may send RRC signaling to a relay device. The RRC signaling may be used to indicate the correspondence between the value in the HARQ feedback indication field and whether HARQ feedback is to be performed.

[0233] For example, when the HARQ feedback indication field is a dedicated information bit, the RRC signaling may be used to indicate the correspondence between the first value and / or the second value in the dedicated information bit and whether HARQ feedback is to be performed. Such as indicating at least one of the following correspondences: the first value indicates sending HARQ-ACK or HARQ-NACK; the first value indicates not sending HARQ-ACK and HARQ-NACK; the second value indicates sending HARQ-ACK or HARQ-NACK; the second value indicates not sending HARQ-ACK and HARQ-NACK.

[0234] For another example, when the HARQ feedback indication field is a multiplexing information field, the RRC signaling may be used to indicate the correspondence between the first value and / or the second value in the multiplexing information field and whether HARQ feedback is to be performed. Such as indicating at least one of the following correspondences: the first value indicates sending HARQ-ACK or HARQ-NACK; the first value indicates not sending HARQ-ACK and HARQ-NACK; the second value indicates sending HARQ-ACK or HARQ-NACK; the second value indicates not sending HARQ-ACK and HARQ-NACK.

[0235] The present disclosure can indicate the correspondence between the value in the HARQ feedback indication field and whether HARQ feedback is to be performed through RRC, so as to indicate whether to perform HARQ feedback on the DCI including side control information through the value in the HARQ feedback indication field, enabling different signaling to support different feedback methods. Thereby ensuring the correct reception of the corresponding signaling and enhancing the robustness of the communication system.

[0236] In the hybrid automatic repeat request feedback method provided by the embodiments of the present disclosure, at least one of the following information is determined based on predefined rules: the time of HARQ feedback; the time-frequency domain resources of HARQ feedback; the transmission power of HARQ feedback.

[0237] Among them, in some embodiments, in order to reduce the overhead related to HARQ indication, at least one of the information on the time of HARQ feedback, the time-frequency domain resources of HARQ feedback, and the transmission power of HARQ feedback may be determined in a predefined and / or preconfigured manner.

[0238] In some embodiments, the time of HARQ feedback can be determined in a predefined manner. For example, it can be assumed that the slot in which the relay device receives the DCI in the PDCCH is slot #0, then it can be predefined that the relay device performs HARQ feedback on the DCI in the 4th time slot after slot #0. Obviously, in this case, the DCI does not need to include a time interval indication, such as a time interval indication similar to K1.

[0239] In some embodiments, the time-frequency domain resources for HARQ feedback can be configured in a preconfigured manner. It can be understood that the time-frequency domain resources include time domain resources and frequency domain resources. The time domain resources can be symbols, for example, and the frequency domain resources can be subcarriers. For example, a set of PUCCH resources can be preconfigured through RRC signaling. It can be understood that the set of PUCCH resources includes at least one PUCCH resource. When the relay device needs to perform HARQ feedback on the DCI transmitted in the PDCCH, it can select a PUCCH resource from the set of PUCCH resources for HARQ feedback. Obviously, in this case, the DCI does not need to include a PUCCH resource indicator.

[0240] For example, when a set of preconfigured PUCCH resources includes one PUCCH resource, the relay device can select this PUCCH resource for HARQ feedback. Again, for example, when a set of preconfigured PUCCH resources includes multiple PUCCH resources, the relay device can select any one of the PUCCH resources in the set for HARQ feedback. It can be determined from any one of the PUCCH resources in the set according to a preset rule or as specified in the protocol. The present disclosure does not make a limitation.

[0241] In some embodiments, the transmission power of HARQ feedback can be determined in a predefined manner. For example, apply PUCCH power control.

[0242] Of course, any one of the information on the time of HARQ feedback, the time-frequency domain resources of HARQ feedback, and the transmission power of HARQ feedback can be determined in a predefined and / or preconfigured manner; or the time of HARQ feedback and the time-frequency domain resources of HARQ feedback can be determined; or the time of HARQ feedback and the transmission power of HARQ feedback can be determined; or the time-frequency domain resources of HARQ feedback and the transmission power of HARQ feedback can be determined; or the time of HARQ feedback, the time-frequency domain resources of HARQ feedback, and the transmission power of HARQ feedback can be determined.

[0243] The present disclosure pre-configures various parameters related to HARQ indication to reduce the overhead related to HARQ indication, thereby saving resources and improving the efficiency of HARQ feedback.

[0244] In the hybrid automatic repeat request feedback method provided by the embodiments of the present disclosure, the method further includes: receiving first information sent by a relay device, where the first information is HARQ feedback.

[0245] In some embodiments, a network device may receive first information sent by a relay device. The first information is used to describe HARQ feedback on a DCI including side control information.

[0246] For example, a network device may receive first information sent by a relay device. The first information may be a HARQ bit. The HARQ bit may only describe HARQ feedback on a DCI including side control information, that is, the HARQ bit is not multiplexed with other HARQ feedback. The HARQ bit may indicate HARQ-ACK or HARQ-NACK.

[0247] It can be understood that the relay device does not expect other HARQ feedback bits to be fed back in the slot for HARQ feedback on the DCI including side control information (or HARQ feedback on the PDCCH transmitting the DCI including side control information). Therefore, when there are other HARQ feedback bits to be fed back in the slot for HARQ feedback on the DCI including side control information (or HARQ feedback on the PDCCH transmitting the DCI including side control information), the relay device may discard other HARQ feedback bits to be fed back. So that the HARQ feedback information only includes HARQ feedback describing the DCI including side control information.

[0248] The present disclosure makes different signaling support different feedback methods by sending HARQ feedback information that only describes HARQ feedback on the DCI including side control information to the network device. Thereby ensuring the correct reception of the corresponding signaling and improving the robustness of the communication system.

[0249] In the hybrid automatic repeat request feedback method provided by the embodiments of the present disclosure, the method further includes: receiving second information sent by a relay device, where the second information is used to jointly indicate HARQ feedback and / or is used to indicate other HARQ feedback different from HARQ feedback.

[0250] In some embodiments, a network device may receive second information sent by a relay device. The second information is used to jointly indicate HARQ feedback. And / or, the second information is further used to indicate any other HARQ feedback different from the HARQ feedback. That is to say, the second information may be information in which the HARQ feedback is multiplexed with any other HARQ feedback.

[0251] For example, a network device may receive second information sent by a relay device. The second information may be a HARQ bit. The HARQ bit may be used to describe the HARQ feedback on a DCI including side control information, and may also be used to describe other HARQ feedback different from the HARQ feedback on a DCI including side control information. Among them, the HARQ bit may represent HARQ-ACK or HARQ-NACK.

[0252] The present disclosure enables different signaling to support different feedback methods by sending HARQ feedback information multiplexed with other HARQ feedback to a network device. Furthermore, the correct reception of the corresponding signaling is ensured, and the robustness of the communication system is improved.

[0253] In the hybrid automatic repeat request feedback method provided by the embodiments of the present disclosure, the priority of the HARQ feedback is higher than the priority of other HARQ feedback.

[0254] In some embodiments, when the HARQ feedback can be multiplexed with other HARQ feedback, the priority of the HARQ feedback is higher than the priority of other HARQ feedback. That is, the priority of the HARQ feedback on a DCI including side control information may be set higher than the priority of other HARQ feedback.

[0255] For example, when the PUCCH resource is only enough to carry 2-bit information and the number of HARQ bits is 3, 1-bit information needs to be discarded. At this time, the bit information with higher priority can be preferentially retained by means of priority. When the priority of the HARQ feedback on a DCI including side control information is set higher than the priority of other HARQ feedback, the bit corresponding to other HARQ feedback will be preferentially discarded, and the bit corresponding to the HARQ feedback on a DCI including side control information will be retained.

[0256] The present disclosure sets the HARQ feedback priority so that when the PUCCH resource is insufficient, the HARQ feedback on a DCI including side control information can be preferentially retained, enabling different signaling to support different feedback methods. Furthermore, the correct reception of the corresponding signaling is ensured, and the robustness of the communication system is improved.

[0257] In the hybrid automatic repeat request feedback method provided by the embodiments of the present disclosure, Figure 8It is a flowchart of yet another hybrid automatic repeat request (HARQ) feedback method shown according to an exemplary embodiment. As Figure 8 shown, the method may further include the following steps:

[0258] In step S61, resource indication information is sent to the relay device.

[0259] In some embodiments, the network device may send resource indication information to the relay device. Among them, the resource indication information is used to indicate the physical uplink control channel (PUCCH) resource for the relay device to send the second information.

[0260] In step S62, the second information sent by the relay device is received based on the PUCCH resource.

[0261] In some embodiments, the network device may receive the second information sent by the relay device based on the PUCCH resource indicated by the resource indication information in S61.

[0262] For example, the network device sends one or more pieces of resource indication information to the relay device. The network device may receive the second information sent by the relay device on the PUCCH resource indicated by the last sent resource indication information. For another example, the network device may receive the second information sent by the relay device on the PUCCH resource indicated by the Nth sent resource indication information arbitrarily. The present disclosure does not make a limitation.

[0263] The present disclosure provides a method for determining the PUCCH resource for sending HARQ feedback information, so that in the case where the HARQ feedback of the downlink control information (DCI) including side control information can be multiplexed with other HARQ feedbacks, the corresponding PUCCH can be selected to send the corresponding HARQ feedback information, so that different signaling can support different feedback methods. Furthermore, the correct reception of the corresponding signaling is ensured, and the robustness of the communication system is improved.

[0264] It should be noted that those skilled in the art can understand that the various embodiments / implementations involved in the embodiments of the present disclosure above can be used in combination with the foregoing embodiments, or can be used independently. Whether used independently or in combination with the foregoing embodiments, their implementation principles are similar. In the implementation of the present disclosure, some embodiments are described in the implementation manner of being used in combination. Of course, those skilled in the art can understand that such an illustrative description is not a limitation on the embodiments of the present disclosure.

[0265] Figure 9 It is a signaling interaction schematic diagram of a hybrid automatic repeat request (HARQ) feedback shown according to an exemplary embodiment.

[0266] As Figure 9 shown, a signaling interaction schematic diagram among a network device, a relay device, and a terminal is shown. The signaling interaction process may include the following steps:

[0267] In step S71, the network device sends DCI to the relay device.

[0268] In some embodiments, the network device sends DCI including side control information to the relay device.

[0269] In step S72, the relay device adjusts the function of the Fwd part of the relay device based on the side control information in the received DCI.

[0270] In some embodiments, after receiving the DCI including side control information, the relay device may make corresponding adjustments to the function of the Fwd part based on the side control information in the DCI.

[0271] For example, based on the forwarding ON-OFF information in the side control information, it can be adjusted whether the relay device performs subsequent relay forwarding.

[0272] In step S73, the relay device determines whether to perform HARQ feedback to the network device according to the DCI.

[0273] In some embodiments, the relay device may determine to perform HARQ feedback to the network device or not to perform HARQ feedback according to the DCI. In the case of determining to perform HARQ feedback to the network device, the relay device may send the first information or the second information to the network device.

[0274] In step S74, the network device sends the first communication data to the relay device.

[0275] In some embodiments, after receiving the first information or the second information sent by the relay device, the network device may send the first communication data to the relay device. It can be understood that the first communication data is the data for communication interaction between the network device and the terminal. For example, it may be random access information or a data packet, etc., which is not limited in this disclosure.

[0276] In step S75, the relay device receives the first communication data sent by the network device and forwards it to the terminal.

[0277] In some embodiments, the relay device may receive the first communication data sent by the network device to the terminal and forward the first communication data to the terminal. It can be understood that the corresponding parameters of the FWd part when the relay device forwards can be configured through the side control information.

[0278] In step S76, the terminal sends the second communication data to the relay device.

[0279] In some embodiments, after receiving the first communication data, the terminal may send second communication data to the relay device. The second communication data may be regarded as a reply message to the first communication data.

[0280] In step S77, the relay device receives the second communication data sent by the terminal and forwards it to the network device.

[0281] In some embodiments, the relay device may receive the second communication data sent by the terminal to the network device and forward the second communication data to the network device.

[0282] It can be understood that for the above Figure 9 described process, the specific implementation process can refer to Figures 3 to 8 the described solution, which will not be elaborated in this disclosure.

[0283] This disclosure indicates HARQ feedback for DCI including side control information through DCI, enabling different signaling to support different feedback methods. Thus, it ensures the correct reception of the corresponding signaling and improves the robustness of the communication system.

[0284] Based on the same concept, embodiments of this disclosure also provide a hybrid automatic repeat request feedback device and equipment.

[0285] It can be understood that the hybrid automatic repeat request feedback device and equipment provided in the embodiments of this disclosure include the corresponding hardware structures and / or software modules for implementing the above functions. Combining the units and algorithm steps in the examples disclosed in the embodiments of this disclosure, the embodiments of this disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed in the way of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the technical solution of the embodiments of this disclosure.

[0286] Figure 10 is a schematic diagram of a hybrid automatic repeat request feedback device shown according to an exemplary embodiment. Referring to Figure 10 , device 300 includes: a receiving module 301, configured to receive downlink control information DCI sent by a network device, where the DCI includes side control information; a processing module 302, configured to determine whether to perform hybrid automatic repeat request HARQ feedback to the network device according to the DCI, and the HARQ feedback represents HARQ feedback for the DCI.

[0287] This disclosure indicates HARQ feedback for DCI including side control information through DCI, enabling different signaling to support different feedback methods. Thus, it ensures the correct reception of the corresponding signaling and improves the robustness of the communication system.

[0288] In some embodiments, the DCI further includes a HARQ feedback indication field; the processing module is further configured to determine whether to perform HARQ feedback to the network device according to the HARQ feedback indication field.

[0289] The present disclosure indicates whether to perform HARQ feedback on the DCI including side control information through the HARQ feedback indication field in the DCI, so that different signaling can support different feedback methods. Furthermore, the correct reception of the corresponding signaling is ensured, and the robustness of the communication system is improved.

[0290] In some embodiments, the processing module is further configured to: when the HARQ feedback indication field is a first value, perform HARQ feedback on the DCI according to the first value.

[0291] The present disclosure indicates to perform HARQ feedback on the DCI including side control information by setting the HARQ feedback indication field to the first value, so that different signaling can support different feedback methods. Furthermore, the correct reception of the corresponding signaling is ensured, and the robustness of the communication system is improved.

[0292] In some embodiments, the processing module is further configured to: when the HARQ feedback indication field is a second value, not perform HARQ feedback on the DCI according to the second value.

[0293] The present disclosure indicates not to perform HARQ feedback on the DCI including side control information by setting the HARQ feedback indication field to the second value, so that different signaling can support different feedback methods. Furthermore, the correct reception of the corresponding signaling is ensured, and the robustness of the communication system is improved.

[0294] In some embodiments, the HARQ feedback includes any one of the following: Hybrid Automatic Repeat reQuest - ACKnowledgement (HARQ - ACK); Hybrid Automatic Repeat reQuest - Negative ACKnowledgement (HARQ - NACK).

[0295] The present disclosure can support feedback information of multiple HARQs to adapt to multiple communication scenarios. Furthermore, the correct reception of the corresponding signaling is ensured, and the robustness of the communication system is improved.

[0296] In some embodiments, the HARQ feedback indication field is a dedicated information bit, and the dedicated information bit is only used to indicate whether to perform HARQ feedback.

[0297] The present disclosure adds a dedicated information bit dedicated to indicating whether to perform HARQ feedback on the DCI including side control information in the DCI, so that different signaling can support different feedback methods. Furthermore, the correct reception of the corresponding signaling is ensured, and the robustness of the communication system is improved.

[0298] In some embodiments, the HARQ feedback indication field is a multiplexing information field, and the multiplexing information field is used to jointly indicate whether HARQ feedback is performed, and to indicate other information different from HARQ feedback.

[0299] The present disclosure multiplexes an existing information field in DCI to indicate whether HARQ feedback is performed on DCI including side control information, so that different signaling can support different feedback methods. Thereby ensuring the correct reception of the corresponding signaling and enhancing the robustness of the communication system.

[0300] In some embodiments, the receiving module 301 is further configured to: receive a radio resource control (RRC) signaling sent by a network device, and the RRC signaling is used to indicate the correspondence between the value in the HARQ feedback indication field and whether HARQ feedback is performed.

[0301] The present disclosure can indicate the correspondence between the value in the HARQ feedback indication field and whether HARQ feedback is performed through RRC, so as to indicate whether HARQ feedback is performed on DCI including side control information through the value in the HARQ feedback indication field, so that different signaling can support different feedback methods. Thereby ensuring the correct reception of the corresponding signaling and enhancing the robustness of the communication system.

[0302] In some embodiments, at least one of the following information is determined based on a predefined rule: the time of HARQ feedback; the time-frequency domain resource of HARQ feedback; the transmission power of HARQ feedback.

[0303] The present disclosure pre-configures various parameters related to HARQ indication to reduce the overhead related to HARQ indication, thereby saving resources and enhancing the efficiency of HARQ feedback.

[0304] In some embodiments, the apparatus 300 further includes: a sending module 303, configured to send a first message to a network device, where the first message is a HARQ feedback.

[0305] The present disclosure sends HARQ feedback information that only describes HARQ feedback on DCI including side control information to a network device, so that different signaling can support different feedback methods. Thereby ensuring the correct reception of the corresponding signaling and enhancing the robustness of the communication system.

[0306] In some embodiments, the apparatus 300 further includes: a sending module 303, configured to send a second message in response to a network device, where the second message is used to jointly indicate HARQ feedback, and / or, is used to indicate other HARQ feedback different from HARQ feedback.

[0307] The present disclosure makes different signaling support different feedback methods by sending HARQ feedback information multiplexed with other HARQ feedbacks to a network device. Furthermore, the correct reception of the corresponding signaling is ensured, and the robustness of the communication system is improved.

[0308] In some embodiments, the priority of the HARQ feedback is higher than that of other HARQ feedbacks.

[0309] The present disclosure sets the HARQ feedback priority so that when the PUCCH resources are insufficient, the HARQ feedback of the DCI including side control information can be preferentially reserved, making different signaling support different feedback methods. Furthermore, the correct reception of the corresponding signaling is ensured, and the robustness of the communication system is improved.

[0310] In some embodiments, the receiving module 301 is further configured to receive resource indication information sent by a network device, where the resource indication information is used to indicate a physical uplink control channel PUCCH resource for the relay device to send a second piece of information; the processing module 302 is further configured to determine the PUCCH resource according to the resource indication information; and the sending module 303 is further configured to send the second piece of information to the network device based on the PUCCH resource.

[0311] The present disclosure provides a method for determining a PUCCH resource for sending HARQ feedback information, so that when the HARQ feedback of the DCI including side control information can be multiplexed with other HARQ feedbacks, the corresponding PUCCH can be selected to send the corresponding HARQ feedback information, making different signaling support different feedback methods. Furthermore, the correct reception of the corresponding signaling is ensured, and the robustness of the communication system is improved.

[0312] Figure 11 It is a schematic diagram of another hybrid automatic repeat request feedback device shown according to an exemplary embodiment. Refer to Figure 11 , the device 400 includes: a sending module 401, configured to send a downlink control information DCI to a relay device, where the DCI includes side control information, and the DCI is used to instruct the relay device to determine whether to perform a hybrid automatic repeat request HARQ feedback to the network device, and the HARQ feedback represents the HARQ feedback on the DCI.

[0313] The present disclosure makes different signaling support different feedback methods by instructing the HARQ feedback on the DCI including side control information through the DCI. Furthermore, the correct reception of the corresponding signaling is ensured, and the robustness of the communication system is improved.

[0314] In some embodiments, the DCI further includes a HARQ feedback indication field, and the HARQ feedback indication field is used to indicate whether to perform a HARQ feedback to the network device.

[0315] The present disclosure indicates whether a relay device performs HARQ feedback on DCI including side control information through a HARQ feedback indication field in DCI, so that different signaling can support different feedback methods. Furthermore, the correct reception of corresponding signaling is ensured, and the robustness of the communication system is improved.

[0316] In some embodiments, the HARQ feedback indication field is a first value, and the first value indicates performing HARQ feedback on the DCI.

[0317] The present disclosure indicates performing HARQ feedback on DCI including side control information by the HARQ feedback indication field being the first value, so that different signaling can support different feedback methods. Furthermore, the correct reception of corresponding signaling is ensured, and the robustness of the communication system is improved.

[0318] In some embodiments, the HARQ feedback indication field is a second value, and the second value indicates not performing HARQ feedback on the DCI.

[0319] The present disclosure indicates not performing HARQ feedback on DCI including side control information by the HARQ feedback indication field being the second value, so that different signaling can support different feedback methods. Furthermore, the correct reception of corresponding signaling is ensured, and the robustness of the communication system is improved.

[0320] In some embodiments, the HARQ feedback includes any one of the following: Hybrid Automatic Repeat reQuest - ACK (HARQ - ACK); Hybrid Automatic Repeat reQuest - Negative ACK (HARQ - NACK).

[0321] The present disclosure can support feedback information of multiple HARQs to adapt to multiple communication scenarios. Furthermore, the correct reception of corresponding signaling is ensured, and the robustness of the communication system is improved.

[0322] In some embodiments, the HARQ feedback indication field is a dedicated information bit, and the dedicated information bit is only used to indicate whether to perform HARQ feedback.

[0323] The present disclosure adds a dedicated information bit specifically for indicating whether to perform HARQ feedback on DCI including side control information in the DCI, so that different signaling can support different feedback methods. Furthermore, the correct reception of corresponding signaling is ensured, and the robustness of the communication system is improved.

[0324] In some embodiments, the HARQ feedback indication field is a multiplexing information field, and the multiplexing information field is used to jointly indicate whether to perform HARQ feedback and to indicate other information different from HARQ feedback.

[0325] The present disclosure reuses existing information fields in DCI to indicate whether HARQ feedback is performed on DCI including side control information, so that different signaling can support different feedback methods. Furthermore, the correct reception of the corresponding signaling is ensured, and the robustness of the communication system is improved.

[0326] In some embodiments, the DCI further includes a HARQ feedback indication field, and the sending module is further configured to: send a radio resource control (RRC) signaling to a relay device, where the RRC signaling is used to indicate the correspondence between the value in the HARQ feedback indication field and whether HARQ feedback is performed.

[0327] The present disclosure can indicate the correspondence between the value in the HARQ feedback indication field and whether HARQ feedback is performed through RRC, so as to indicate whether HARQ feedback is performed on DCI including side control information through the value in the HARQ feedback indication field, so that different signaling can support different feedback methods. Furthermore, the correct reception of the corresponding signaling is ensured, and the robustness of the communication system is improved.

[0328] In some embodiments, at least one of the following information is determined based on a predefined rule: the time of HARQ feedback; the time-frequency domain resource of HARQ feedback; the transmission power of HARQ feedback.

[0329] The present disclosure pre-configures various parameters related to HARQ indication to reduce the overhead related to HARQ indication, thereby saving resources and improving the efficiency of HARQ feedback.

[0330] In some embodiments, the apparatus 400 further includes: a receiving module 402, configured to receive a first piece of information sent by a relay device, where the first piece of information is HARQ feedback.

[0331] The present disclosure sends HARQ feedback information that only describes HARQ feedback on DCI including side control information to a network device, so that different signaling can support different feedback methods. Furthermore, the correct reception of the corresponding signaling is ensured, and the robustness of the communication system is improved.

[0332] In some embodiments, the apparatus 400 further includes: a receiving module 402, configured to receive a second piece of information sent by a relay device, where the second piece of information is used to jointly indicate HARQ feedback and / or is used to indicate other HARQ feedback different from HARQ feedback.

[0333] The present disclosure sends HARQ feedback information that is multiplexed with other HARQ feedback to a network device, so that different signaling can support different feedback methods. Furthermore, the correct reception of the corresponding signaling is ensured, and the robustness of the communication system is improved.

[0334] In some embodiments, the priority of HARQ feedback is higher than that of other HARQ feedbacks.

[0335] The present disclosure sets the HARQ feedback priority so that when the PUCCH resources are insufficient, the HARQ feedback of the DCI including side control information can be preferentially reserved, enabling different signaling to support different feedback methods. This further ensures the correct reception of the corresponding signaling and improves the robustness of the communication system.

[0336] In some embodiments, the sending module 401 is further configured to send resource indication information to the relay device, where the resource indication information is used to indicate the physical uplink control channel PUCCH resources for the relay device to send the second information; the receiving module 402 is further configured to receive the second information sent by the relay device based on the PUCCH resources.

[0337] The present disclosure provides a method for determining the PUCCH resources for sending HARQ feedback information, so that when the HARQ feedback of the DCI including side control information can be multiplexed with other HARQ feedbacks, the corresponding PUCCH can be selected to send the corresponding HARQ feedback information, enabling different signaling to support different feedback methods. This further ensures the correct reception of the corresponding signaling and improves the robustness of the communication system.

[0338] Regarding the apparatus in the above embodiments, the specific manners in which each module performs operations have been described in detail in the embodiments related to the method, and will not be elaborated herein.

[0339] Figure 12 FIG. is a schematic diagram of a communication apparatus shown according to an exemplary embodiment. For example, the device 500 may be any terminal or relay device such as a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0340] Referring to Figure 12 , the device 500 may include one or more of the following components: a processing component 502, a memory 504, a power component 506, a multimedia component 508, an audio component 510, an input / output (I / O) interface 512, a sensor component 514, and a communication component 516.

[0341] The processing component 502 generally controls the overall operation of the device 500, such as operations associated with display, telephone calls, data communication, camera operations, and recording operations. The processing component 502 may include one or more processors 520 to execute instructions to complete all or part of the steps of the above methods. In addition, the processing component 502 may include one or more modules to facilitate the interaction between the processing component 502 and other components. For example, the processing component 502 may include a multimedia module to facilitate the interaction between the multimedia component 508 and the processing component 502.

[0342] The memory 504 is configured to store various types of data to support the operation of the device 500. Examples of such data include instructions for any application or method operating on the device 500, contact data, phone book data, messages, pictures, videos, etc. The memory 504 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disks, or optical disks.

[0343] The power component 506 provides power to various components of the device 500. The power component 506 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power to the device 500.

[0344] The multimedia component 508 includes a screen that provides an output interface between the device 500 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen can be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors can not only sense the boundaries of touch or swipe actions, but also detect the duration and pressure associated with the touch or swipe operations. In some embodiments, the multimedia component 508 includes a front camera and / or a rear camera. When the device 500 is in an operation mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each of the front camera and the rear camera can be a fixed optical lens system or have a focal length and optical zoom capabilities.

[0345] The audio component 510 is configured to output and / or input audio signals. For example, the audio component 510 includes a microphone (MIC) that is configured to receive external audio signals when the device 500 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals can be further stored in the memory 504 or sent via the communication component 516. In some embodiments, the audio component 510 further includes a speaker for outputting audio signals.

[0346] The I / O interface 512 provides an interface between the processing component 502 and peripheral interface modules, and the peripheral interface modules may be a keyboard, a click wheel, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a power button, and a lock button.

[0347] The sensor component 514 includes one or more sensors for providing an assessment of various aspects of the state of the device 500. For example, the sensor component 514 can detect the on / off state of the device 500, the relative positioning of components, such as the display and keypad of the device 500. The sensor component 514 can also detect a change in the position of the device 500 or a component of the device 500, the presence or absence of user contact with the device 500, the orientation or acceleration / deceleration of the device 500, and a change in the temperature of the device 500. The sensor component 514 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor component 514 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor component 514 may further include an acceleration sensor, a gyro sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0348] The communication component 516 is configured to facilitate communication between the device 500 and other devices in a wired or wireless manner. The device 500 can access a wireless network based on communication standards, such as WiFi, 2G, or 3G, or a combination thereof. In an exemplary embodiment, the communication component 516 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 516 further includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0349] In an exemplary embodiment, the device 500 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components for performing the above method.

[0350] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 504 including instructions, and the above instructions can be executed by a processor 520 of the device 500 to complete the above method. For example, the non-transitory computer-readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, and an optical data storage device, etc.

[0351] Figure 13 It is a schematic diagram of another communication device shown according to an exemplary embodiment.

[0352] For example, the device 600 may be provided as a base station or a server. Referring to Figure 13 , the device 600 includes a processing component 622, which further includes one or more processors, and memory resources represented by a memory 632 for storing instructions executable by the processing component 622, such as application programs. The application programs stored in the memory 632 may include one or more modules each corresponding to a set of instructions. In addition, the processing component 622 is configured to execute instructions to perform the above method.

[0353] The device 600 may further include a power component 626 configured to perform power management of the device 600, a wired or wireless network interface 650 configured to connect the device 600 to a network, and an input / output (I / O) interface 658. The device 600 may operate based on an operating system stored in the memory 632, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, or the like.

[0354] In one embodiment, for example Figure 1 as shown, the present disclosure also provides a communication system, which includes a relay device and a network device. Among them, the relay device is used to perform Figures 3 to 5 any one of the methods described therein; the network device is used to perform Figures 6 to 8 any one of the methods described therein.

[0355] The present disclosure indicates HARQ feedback for DCI including sidelink control information through DCI, enabling different signaling to support different feedback methods. This further ensures the correct reception of the corresponding signaling and enhances the robustness of the communication system.

[0356] It can be further understood that in the present disclosure, "a plurality of" means two or more, and other quantifiers are similar thereto. "And / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after. The singular forms of "a", "the", and "said" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0357] It can be further understood that terms such as "first", "second", etc. are used to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not represent a specific order or degree of importance. In fact, the expressions such as "first" and "second" can be used interchangeably. For example, without departing from the scope of the present disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

[0358] It can be further understood that the meanings of words such as "responsive to" and "if" involved in the present disclosure depend on the context and the actual usage scenario. For example, the word "responsive to" as used herein can be interpreted as "when...", "while...", "if", or "when".

[0359] It can be further understood that although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood that they are required to be performed in the specific order shown or in a serial order, or that all the operations shown are required to obtain the desired result. In a specific environment, multitasking and parallel processing may be advantageous.

[0360] Those skilled in the art will readily conceive of other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common general knowledge or conventional technical means in the technical field not disclosed in the present disclosure.

[0361] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A hybrid automatic repeat request (HARQ) feedback method, characterized in that, the method is executed by a relay device and includes: receiving downlink control information (DCI) sent by a network device, where the DCI includes side control information; determining whether to perform HARQ feedback to the network device according to the DCI, where the HARQ feedback indicates performing HARQ feedback on the DCI; sending second information to the network device, where the second information is used to jointly indicate the HARQ feedback and other HARQ feedback different from the HARQ feedback; when the physical uplink control channel (PUCCH) resource cannot carry all bits of the second information, retaining partial bits according to priority; where the priority of the HARQ feedback is higher than the priority of the other HARQ feedback.

2. The method according to claim 1, characterized in that, the DCI further includes a HARQ feedback indication field; determining whether to perform HARQ feedback to the network device according to the DCI includes: determining whether to perform the HARQ feedback to the network device according to the HARQ feedback indication field.

3. The method according to claim 2, characterized in that, the determining whether to perform the HARQ feedback to the network device according to the HARQ feedback indication field includes: when the HARQ feedback indication field is a first value, performing HARQ feedback on the DCI according to the first value.

4. The method according to claim 2, characterized in that, the determining whether to perform HARQ feedback to the network device according to the HARQ feedback indication field includes: when the HARQ feedback indication field is a second value, not performing HARQ feedback on the DCI including the DCI according to the second value.

5. The method according to any one of claims 2-4, characterized in that, the HARQ feedback indication field is a dedicated information bit, and the dedicated information bit is only used to indicate whether to perform the HARQ feedback.

6. The method according to any one of claims 2-4, characterized in that, the HARQ feedback indication field is a multiplexing information field, and the multiplexing information field is used to jointly indicate whether to perform the HARQ feedback and to indicate other information different from the HARQ feedback.

7. The method according to claim 6, characterized in that, the method further includes: receiving radio resource control (RRC) signaling sent by the network device, where the RRC signaling is used to indicate the correspondence between the value in the HARQ feedback indication field and whether to perform the HARQ feedback.

8. The method according to any one of claims 1-7, characterized in that, determining at least one of the following information based on a predefined rule: the time of HARQ feedback; the time-frequency domain resource of HARQ feedback; the transmission power of HARQ feedback.

9. The method according to claim 3, characterized in that, the method further includes: sending first information to the network device, where the first information is the HARQ feedback.

10. The method according to claim 1, wherein, the method further comprises: receiving resource indication information sent by the network device, where the resource indication information is used to indicate a physical uplink control channel PUCCH resource for the relay device to send the second information; determining the PUCCH resource according to the resource indication information; the sending the second information to the network device includes: sending the second information to the network device based on the PUCCH resource.

11. A hybrid automatic repeat request feedback method, wherein, the method is executed by a network device and includes: sending downlink control information DCI to a relay device, where the DCI includes side control information, and the DCI is used to indicate whether the relay device determines to perform hybrid automatic repeat request HARQ feedback to the network device, and the HARQ feedback represents HARQ feedback on the DCI; receiving second information sent by the relay device, where the second information is used to jointly indicate the HARQ feedback and other HARQ feedback different from the HARQ feedback; when all bits of the second information cannot be carried on a physical uplink control channel PUCCH resource, partial bits of the second information are reserved according to priority; wherein, the priority of the HARQ feedback is higher than the priority of the other HARQ feedback.

12. The method according to claim 11, wherein, the HARQ feedback indication field is a dedicated information bit, and the dedicated information bit is only used to indicate whether to perform the HARQ feedback.

13. The method according to claim 11, wherein, the HARQ feedback indication field is a multiplexing information field, and the multiplexing information field is used to jointly indicate whether to perform the HARQ feedback and to indicate other information different from the HARQ feedback.

14. The method according to any one of claims 11-13, wherein, the DCI further includes a HARQ feedback indication field, and the method further comprises: sending radio resource control RRC signaling to the relay device, where the RRC signaling is used to indicate a correspondence between a value in the HARQ feedback indication field and whether to perform the HARQ feedback.

15. The method according to any one of claims 11-14, wherein, determining at least one of the following information based on a predefined rule: the time of the HARQ feedback; the time-frequency domain resource of the HARQ feedback; the transmission power of the HARQ feedback.

16. The method according to any one of claims 11-15, wherein, the method further comprises: receiving first information sent by the relay device, where the first information is the HARQ feedback.

17. The method according to claim 11, wherein, the method further comprises: sending resource indication information to the relay device, where the resource indication information is used to indicate a physical uplink control channel PUCCH resource for the relay device to send the second information; the receiving the second information sent by the relay device includes: Receive the second information sent by the relay device based on the PUCCH resource.

18. A hybrid automatic repeat request (HARQ) feedback device, characterized in that the device includes: a receiving module, configured to receive downlink control information (DCI) sent by a network device; a processing module, configured to determine whether to perform HARQ feedback to the network device according to the DCI, where the HARQ feedback represents HARQ feedback on the DCI; a sending module, configured to send second information to the network device, where the second information is used to jointly indicate the HARQ feedback and other HARQ feedback different from the HARQ feedback; the processing module is further configured to retain partial bits according to priority when the physical uplink control channel (PUCCH) resource cannot carry all bits of the second information; wherein the priority of the HARQ feedback is higher than the priority of the other HARQ feedback.

19. A hybrid automatic repeat request (HARQ) feedback device, characterized in that the device includes: a sending module, configured to send downlink control information (DCI) to a relay device, where the DCI includes side control information, and the DCI is used to instruct the relay device to determine whether to perform HARQ feedback to a network device, where the HARQ feedback represents HARQ feedback on the DCI; a receiving module, configured to receive the second information sent by the relay device, where the second information is used to jointly indicate the HARQ feedback and other HARQ feedback different from the HARQ feedback; when the physical uplink control channel (PUCCH) resource cannot carry all bits of the second information, partial bits of the second information are retained according to priority; wherein the priority of the HARQ feedback is higher than the priority of the other HARQ feedback.

20. A communication device, characterized in that it includes: a processor; a memory for storing instructions executable by the processor; wherein the processor is configured to execute the method according to any one of claims 1 to 10.

21. A communication device, characterized in that it includes: a processor; a memory for storing instructions executable by the processor; wherein the processor is configured to execute the method according to any one of claims 11 to 17.

22. A non-transitory computer-readable storage medium, when instructions in the storage medium are executed by a processor of a relay device, enabling the relay device to execute the method according to any one of claims 1 to 10.

23. A non-transitory computer-readable storage medium, when instructions in the storage medium are executed by a processor of a network device, enabling the network device to execute the method according to any one of claims 11 to 17.

24. A communication system, including a relay device and a network device, wherein the relay device is configured to execute the method according to any one of claims 1 to 10; the network device is configured to execute the method according to any one of claims 11 to 17.

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