Wireless communication method and terminal device

Abstract

The present application provides a wireless communication method and terminal device, which can flexibly start a HARQ RTT timer in the terminal device to achieve power saving. The method includes: the terminal device monitors a PDCCH during a DRX period, the PDCCH carrying an uplink grant indicating an asynchronous HARQ process for transmitting a PUSCH; after monitoring the PDCCH, the terminal device starts an uplink HARQ RTT timer for the asynchronous HARQ process at a first moment.

Description

Technical Field

[0001] The present application relates to the field of communications, and more particularly, to a wireless communication method and terminal device. Background Art

[0002] In the Long Term Evolution (LTE) system, the Hybrid Automatic Repeat Request Round Trip Time (HARQ RTT) timer is defined for each asynchronous Hybrid Automatic Repeat Request (HARQ) process. Specifically, an uplink HARQ RTT timer is maintained for each asynchronous HARQ process. When this timer is enabled, the terminal device does not need to monitor the Physical Downlink Control Channel (PDCCH) for this asynchronous HARQ process within the timer's duration.

[0003] In the fifth-generation mobile communication technology (5-Generation, 5G) New Radio NR communication, the start timing of the uplink HARQ RTT timer needs to consider the repetition of the Physical Uplink Shared Channel (PUSCH) to meet the power saving requirements. Summary of the Invention

[0004] The embodiments of the present application provide a method and terminal device for wireless communication, and the terminal device can flexibly start the HARQ RTT timer to achieve the purpose of power saving.

[0005] In a first aspect, an embodiment of the present application provides a method for wireless communication, including:

[0006] The terminal device monitors the downlink control channel PDCCH during the discontinuous reception DRX period. The PDCCH carries an uplink grant indicating an asynchronous hybrid automatic repeat request HARQ process for transmitting an uplink shared channel PUSCH.

[0007] After detecting the PDCCH, the terminal device starts the uplink HARQ cycle time RTT timer for the asynchronous HARQ process at the first moment.

[0008] Therefore, in the wireless communication method of an embodiment of the present application, after the terminal device hears the PDCCH indicating the uplink asynchronous HARQ process, it starts the uplink HARQ RTT timer for the asynchronous HARQ process at the first moment. Therefore, the terminal device does not need to monitor the PDCCH during the period when the uplink HARQ RTT timer is started, thereby achieving the purpose of power saving.

[0009] Optionally, in an implementation of the first aspect, the method further includes:

[0010] When performing the nth PUSCH transmission, the terminal device receives a retransmission termination message fed back by the network device, where n is a positive integer less than or equal to k, k is the maximum number of retransmissions, and k is a positive integer greater than or equal to 1;

[0011] The terminal device determines the first moment as the moment of the nth transmission of PUSCH.

[0012] It should be understood that after the terminal device receives the termination retransmission message fed back by the network device, it indicates that the network device has successfully received the PUSCH and can end the retransmission without waiting for the maximum number of retransmissions.

[0013] Therefore, in the wireless communication method of the embodiment of the present application, the terminal device can start the uplink HARQ RTT timer for the asynchronous HARQ process when receiving the termination retransmission message, so that the terminal device can end monitoring the PDCCH in advance, thereby achieving the purpose of power saving.

[0014] Optionally, in an implementation manner of the first aspect, the retransmission termination message is dynamic scheduling information indicated by a PDCCH, or the retransmission termination message is an acknowledgment frame ACK or a non-acknowledgment frame NACK indicated by a PDCCH.

[0015] Optionally, in an implementation manner of the first aspect, the first moment is a moment of first transmission of the PUSCH.

[0016] Therefore, in the wireless communication method of the embodiment of the present application, the uplink HARQ RTT timer is started at the moment of the first transmission of PUSCH, so that the terminal device does not need to monitor PDCCH during the period when the uplink HARQ RTT timer is started, thereby achieving the purpose of power saving.

[0017] Optionally, in an implementation manner of the first aspect, the first transmission of the PUSCH is the first of k retransmissions of the PUSCH, k is a maximum number of retransmissions, and k is a positive integer greater than or equal to 1.

[0018] Optionally, in an implementation manner of the first aspect, the first moment is the moment of the kth transmission of the PUSCH, k is the maximum number of retransmissions, and k is a positive integer greater than or equal to 1.

[0019] Optionally, in an implementation manner of the first aspect, the maximum number of retransmissions is configured by the network device for the asynchronous HARQ process.

[0020] Optionally, in an implementation manner of the first aspect, the maximum number of retransmissions is preconfigured for the asynchronous HARQ process.

[0021] In a second aspect, an embodiment of the present application provides a method for wireless communication, including:

[0022] The terminal device determines that it has an uplink grant at a current moment, where the uplink grant indicates an asynchronous hybrid automatic repeat request HARQ process for transmitting an uplink shared channel PUSCH;

[0023] The terminal device starts the uplink HARQ cycle time RTT timer for the asynchronous HARQ process at the first moment.

[0024] Therefore, in the wireless communication method of an embodiment of the present application, after the terminal device determines that there is currently an uplink authorization indicating an uplink asynchronous HARQ process, it starts the uplink HARQ RTT timer for the asynchronous HARQ process at the first moment. As a result, the terminal device does not need to monitor the PDCCH during the period when the uplink HARQ RTT timer is started, thereby achieving the purpose of power saving.

[0025] Optionally, in an implementation of the second aspect, the method further includes:

[0026] When performing the nth PUSCH transmission, the terminal device receives a retransmission termination message fed back by the network device, where n is a positive integer less than or equal to k, k is the maximum number of retransmissions, and k is a positive integer greater than or equal to 1;

[0027] The terminal device determines the first moment as the moment of the nth transmission of PUSCH.

[0028] It should be understood that after the terminal device receives the termination retransmission message fed back by the network device, it indicates that the network device has successfully received the PUSCH and can end the retransmission without waiting for the maximum number of retransmissions.

[0029] Therefore, in the wireless communication method of the embodiment of the present application, the terminal device can start the uplink HARQ RTT timer for the asynchronous HARQ process when receiving the termination retransmission message, so that the terminal device can end monitoring the PDCCH in advance, thereby achieving the purpose of power saving.

[0030] Optionally, in an implementation manner of the second aspect, the retransmission termination message is dynamic scheduling information indicated by a PDCCH, or the retransmission termination message is an acknowledgment frame ACK or a non-acknowledgment frame NACK indicated by a PDCCH.

[0031] Optionally, in an implementation manner of the second aspect, the first moment is a moment of first transmission of the PUSCH.

[0032] Therefore, in the wireless communication method of the embodiment of the present application, the uplink HARQ RTT timer is started at the moment of the first transmission of PUSCH, so that the terminal device does not need to monitor PDCCH during the period when the uplink HARQ RTT timer is started, thereby achieving the purpose of power saving.

[0033] Optionally, in an implementation manner of the second aspect, the first transmission of PUSCH is the first of k retransmissions of PUSCH, k is a maximum number of retransmissions, and k is a positive integer greater than or equal to 1.

[0034] Optionally, in an implementation manner of the second aspect, the first moment is the moment of the kth transmission of the PUSCH, k is the maximum number of retransmissions, and k is a positive integer greater than or equal to 1.

[0035] Optionally, in an implementation manner of the second aspect, the maximum number of retransmissions is configured by the network device for the asynchronous HARQ process.

[0036] Optionally, in an implementation manner of the second aspect, the maximum number of retransmissions is preconfigured for the asynchronous HARQ process.

[0037] In a third aspect, an embodiment of the present application provides a terminal device that can execute a module or unit of the method in the first aspect or any optional implementation of the first aspect.

[0038] In a fourth aspect, an embodiment of the present application provides a terminal device that can execute a module or unit of the method in the second aspect or any optional implementation of the second aspect.

[0039] In a fifth aspect, a terminal device is provided, comprising a processor, a memory, and a communication interface. The processor is connected to the memory and the communication interface. The memory is configured to store instructions, the processor is configured to execute the instructions, and the communication interface is configured to communicate with other network elements under the control of the processor. When the processor executes the instructions stored in the memory, the execution causes the processor to perform the method according to the first aspect or any possible implementation of the first aspect.

[0040] In a sixth aspect, a terminal device is provided, comprising a processor, a memory, and a communication interface. The processor is connected to the memory and the communication interface. The memory is configured to store instructions, the processor is configured to execute the instructions, and the communication interface is configured to communicate with other network elements under the control of the processor. When the processor executes the instructions stored in the memory, the execution causes the processor to perform the method of the second aspect or any possible implementation of the second aspect.

[0041] In a seventh aspect, a computer storage medium is provided, in which a program code is stored, and the program code is used to instruct a computer to execute instructions of the method in the above-mentioned first aspect or any possible implementation of the first aspect.

[0042] In an eighth aspect, a computer storage medium is provided, in which a program code is stored, and the program code is used to instruct a computer to execute instructions of the method in the above-mentioned second aspect or any possible implementation of the second aspect.

[0043] In a ninth aspect, a computer program product comprising instructions is provided, which, when executed on a computer, enables the computer to execute the methods described in the above aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a schematic diagram of an application scenario of an embodiment of the present application.

[0045] Figure 2 It is a schematic flowchart of a wireless communication method according to an embodiment of the present application.

[0046] Figure 3 It is a schematic flowchart of another wireless communication method according to an embodiment of the present application.

[0047] Figure 4 It is a schematic block diagram of a terminal device according to an embodiment of the present application.

[0048] Figure 5 This is a schematic block diagram of another terminal device according to an embodiment of the present application.

[0049] Figure 6 A schematic block diagram of a wireless communication device provided in an embodiment of the present application is shown.

[0050] Figure 7 is a schematic structural diagram of a system chip according to an embodiment of the present application. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application.

[0052] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD) system, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system or 5G communication system, etc.

[0053] The terminal device in the embodiments of the present application may refer to user equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network or a terminal device in a future evolved Public Land Mobile Network (PLMN), etc., and the embodiments of the present application are not limited thereto.

[0054] This application describes various embodiments in conjunction with network devices. The network device in the embodiments of the present application may be a device for communicating with a terminal device, and the access network device may be an evolved base station (Evolutional NodeB, eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (CRAN) scenario, or the access network device may be a relay station, an access point, a vehicle-mounted device, a wearable device, a next-generation evolved base station (Next Generation Evolutional NodeB, NG-eNB), and an access network device (e.g., gNB) in a 5G network or an access network device in a future evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc., and the embodiments of the present application are not limited thereto.

[0055] Figure 1 One network device and two terminal devices are shown exemplarily. Optionally, the wireless communication system 100 may include multiple network devices and each network device may include another number of terminal devices within its coverage area. This embodiment of the present application does not limit this.

[0056] Optionally, the wireless communication system 100 may also include other network entities such as a network controller, a mobility management entity (MME), an access and mobility management function (AMF), etc., which is not limited in the embodiments of the present application.

[0057] In addition, various aspects or features of the present application can be implemented as methods, devices or products using standard programming and / or engineering techniques. The term "product" as used in this application covers computer programs that can be accessed from any computer-readable device, carrier or medium. For example, computer-readable media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks or tapes, etc.), optical disks (e.g., compact discs (CDs), digital versatile discs (DVDs), etc.), smart cards and flash memory devices (e.g., erasable programmable read-only memories (EPROMs), cards, sticks or key drives, etc.). In addition, the various storage media described herein may represent one or more devices and / or other machine-readable media for storing information. The term "machine-readable medium" may include, but is not limited to, various media capable of storing, containing and / or carrying instructions and / or data.

[0058] It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and / or" is simply a description of an association between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " generally indicates that the related objects are in an "or" relationship.

[0059] Figure 2 is a schematic flow chart of a wireless communication method 200 according to an embodiment of the present application. The method 200 may optionally be applied to Figure 1 The system shown is, but not limited to, the method 200 including at least some of the following.

[0060] 210. The terminal device monitors the PDCCH during a discontinuous reception (DRX) period. The PDCCH carries an uplink grant indicating an asynchronous HARQ process for transmitting the PUSCH.

[0061] Optionally, the terminal device may transmit the PUSCH on the asynchronous HARQ process according to the uplink authorization.

[0062] 220. After detecting the PDCCH, the terminal device starts the uplink HARQ RTT timer for the asynchronous HARQ process at the first moment.

[0063] It should be understood that during the period when the uplink HARQ RTT timer is activated, the terminal device does not expect to listen to the PDCCH for the asynchronous HARQ process.

[0064] Optionally, when the terminal device transmits PUSCH through the asynchronous HARQ process, if the transmission fails, the terminal device needs to retransmit the PUSCH through the asynchronous HARQ process.

[0065] Optionally, the asynchronous HARQ process has a maximum number of retransmissions. If the number of retransmissions exceeds the maximum number of retransmissions, it is considered that the data transmission has failed, and no retransmission is required.

[0066] For example, the maximum number of retransmissions of asynchronous HARQ process a is k. If the terminal device fails to transmit uplink data Q k times through asynchronous HARQ process a, the terminal device considers that the uplink data Q transmission has failed and does not need to be retransmitted.

[0067] Optionally, the maximum number of retransmissions is configured by the network device for the asynchronous HARQ process.

[0068] Optionally, the maximum number of retransmissions is preconfigured for the asynchronous HARQ process.

[0069] Optionally, the terminal device may determine the first moment in the following manner:

[0070] Method 1:

[0071] When performing the nth PUSCH transmission, the terminal device receives a retransmission termination message fed back by the network device, where n is a positive integer less than or equal to k, k is the maximum number of retransmissions, and k is a positive integer greater than or equal to 1;

[0072] The terminal device determines the first moment as the moment of the nth transmission of PUSCH.

[0073] Optionally, the n-th transmission of PUSCH refers to: the terminal device transmits PUSCH and performs the n-th retransmission after the terminal device fails to retransmit n-1 times continuously.

[0074] Optionally, the retransmission termination message is dynamic scheduling information indicated by the network device through the PDCCH.

[0075] Optionally, the retransmission termination message is an acknowledgment frame (Acknowledgement, ACK) or a non-acknowledgement frame (Non-Acknowledgement, NACK) indicated by a PDCCH.

[0076] It should be understood that after the terminal device receives the termination retransmission message fed back by the network device, it indicates that the network device has successfully received the PUSCH and can end the retransmission without waiting for the maximum number of retransmissions.

[0077] Method 2:

[0078] The terminal device determines the first moment as the moment of first transmission of PUSCH.

[0079] It should be understood that the moment of the first transmission of the PUSCH is not a special case of n=1 in the first method. In the second method, the terminal device does not need to receive a feedback message from the network device.

[0080] Optionally, the first transmission of PUSCH refers to: the terminal device transmits PUSCH for the first time.

[0081] Optionally, in the event that the first transmission of the PUSCH fails, retransmission may also be performed.

[0082] Optionally, the terminal device determines that the first moment is the moment of first PUSCH transmission. It can be understood that the terminal device does not expect to receive the PDCCH for the asynchronous HARQ process at the moment of the first PUSCH transmission, that is, if there is a subsequent retransmission of PUSCH, the terminal device does not expect to receive the PDCCH for the asynchronous HARQ process.

[0083] Optionally, the first transmission of PUSCH is the first of k retransmissions of PUSCH, k is a maximum number of retransmissions, and k is a positive integer greater than or equal to 1.

[0084] Method three,

[0085] The terminal device determines that the first moment is the moment of transmitting PUSCH for the kth time, where k is the maximum number of retransmissions, and k is a positive integer greater than or equal to 1.

[0086] Optionally, the k-th transmission of PUSCH means: the terminal device performs the last PUSCH retransmission.

[0087] Optionally, at this time, the terminal device starts an uplink HARQ RTT timer for the asynchronous HARQ process in the subframe corresponding to the last retransmission of the PUSCH.

[0088] Therefore, in method 1 of an embodiment of the present application, the terminal device can start the uplink HARQ RTT timer for the asynchronous HARQ process when receiving the termination retransmission message, so that the terminal device can end monitoring the PDCCH in advance, thereby achieving the purpose of power saving.

[0089] In the second embodiment of the present application, the uplink HARQ RTT timer is started at the moment of the first transmission of the PUSCH. Thus, the terminal device does not need to monitor the PDCCH during the period when the uplink HARQ RTT timer is started, thereby achieving the purpose of power saving.

[0090] In method three of the embodiment of the present application, the uplink HARQ RTT timer is started at the moment of the last PUSCH transmission, thereby ensuring reliable data transmission to the greatest extent. At the same time, the terminal device does not need to monitor the PDCCH during the period when the uplink HARQ RTT timer is started, thereby achieving the purpose of power saving.

[0091] Figure 3 is a schematic flow chart of a wireless communication method 300 according to an embodiment of the present application. The method 300 may optionally be applied to Figure 1 The system shown is, but not limited to, the method 300. The method 300 includes at least part of the following.

[0092] 310. The terminal device determines that it has an uplink grant at a current moment, where the uplink grant indicates an asynchronous HARQ process for transmitting a PUSCH.

[0093] Optionally, the terminal device may transmit the PUSCH on the asynchronous HARQ process according to the uplink authorization.

[0094] 320. The terminal device starts the uplink HARQ RTT timer for the asynchronous HARQ process at the first moment.

[0095] Optionally, the maximum number of retransmissions is configured by the network device for the asynchronous HARQ process.

[0096] Optionally, the maximum number of retransmissions is preconfigured for the asynchronous HARQ process.

[0097] Optionally, the terminal device may determine the first moment in the following manner:

[0098] Method 1:

[0099] When performing the nth PUSCH transmission, the terminal device receives a retransmission termination message fed back by the network device, where n is a positive integer less than or equal to k, k is the maximum number of retransmissions, and k is a positive integer greater than or equal to 1;

[0100] The terminal device determines the first moment as the moment of the nth transmission of PUSCH.

[0101] Optionally, the n-th transmission of PUSCH refers to: the terminal device transmits PUSCH and performs the n-th retransmission after the terminal device fails to retransmit n-1 times continuously.

[0102] Optionally, the retransmission termination message is dynamic scheduling information indicated by the network device through the PDCCH.

[0103] Optionally, the retransmission termination message is an acknowledgment frame (Acknowledgement, ACK) or a non-acknowledgement frame (Non-Acknowledgement, NACK) indicated by a PDCCH.

[0104] It should be understood that after the terminal device receives the termination retransmission message fed back by the network device, it indicates that the network device has successfully received the PUSCH and can end the retransmission without waiting for the maximum number of retransmissions.

[0105] Method 2:

[0106] The terminal device determines the first moment as the moment of first transmission of PUSCH.

[0107] Optionally, the first transmission of PUSCH refers to: the terminal device transmits PUSCH for the first time.

[0108] Optionally, in the event that the first transmission of the PUSCH fails, retransmission may also be performed.

[0109] Optionally, the terminal device determines that the first moment is the moment of first PUSCH transmission. It can be understood that the terminal device does not expect to receive the PDCCH for the asynchronous HARQ process at the moment of the first PUSCH transmission, that is, if there is a subsequent retransmission of PUSCH, the terminal device does not expect to receive the PDCCH for the asynchronous HARQ process.

[0110] It should be understood that the moment of the first transmission of the PUSCH is not a special case of n=1 in the first method. In the second method, the terminal device does not need to receive a feedback message from the network device.

[0111] Optionally, the first transmission of PUSCH is the first of k retransmissions of PUSCH, k is a maximum number of retransmissions, and k is a positive integer greater than or equal to 1.

[0112] Method three,

[0113] The terminal device determines that the first moment is the moment of transmitting PUSCH for the kth time, where k is the maximum number of retransmissions, and k is a positive integer greater than or equal to 1.

[0114] Optionally, the k-th transmission of PUSCH means: the terminal device performs the last PUSCH retransmission.

[0115] Optionally, at this time, the terminal device starts an uplink HARQ RTT timer for the asynchronous HARQ process in the subframe corresponding to the last retransmission of the PUSCH.

[0116] Therefore, in method 1 of an embodiment of the present application, the terminal device can start the uplink HARQ RTT timer for the asynchronous HARQ process when receiving the termination retransmission message, so that the terminal device can end monitoring the PDCCH in advance, thereby achieving the purpose of power saving.

[0117] In the second embodiment of the present application, the uplink HARQ RTT timer is started at the moment of the first transmission of the PUSCH. Thus, the terminal device does not need to monitor the PDCCH during the period when the uplink HARQ RTT timer is started, thereby achieving the purpose of power saving.

[0118] In method three of the embodiment of the present application, the uplink HARQ RTT timer is started at the moment of the last PUSCH transmission, thereby ensuring reliable data transmission to the greatest extent. At the same time, the terminal device does not need to monitor the PDCCH during the period when the uplink HARQ RTT timer is started, thereby achieving the purpose of power saving.

[0119] Figure 4 FIG is a schematic block diagram of a terminal device 400 according to an embodiment of the present application. Figure 4 As shown, the terminal device 400 includes:

[0120] The processing unit 410 is configured to monitor a downlink control channel PDCCH during a discontinuous reception (DRX) period, where the PDCCH carries an uplink grant indicating an asynchronous hybrid automatic repeat request (HARQ) process for transmitting an uplink shared channel (PUSCH);

[0121] After the processing unit 410 senses the PDCCH, the processing unit 410 starts an uplink HARQ cycle time RTT timer for the asynchronous HARQ process at a first moment.

[0122] Optionally, the terminal device 400 further includes:

[0123] The receiving unit 420 is configured to receive a retransmission termination message fed back by the network device when performing an n-th PUSCH transmission, where n is a positive integer less than or equal to k, k is a maximum number of retransmissions, and k is a positive integer greater than or equal to 1;

[0124] The processing unit 410 is further configured to determine the first moment as the moment of the nth PUSCH transmission.

[0125] Optionally, the retransmission termination message is dynamic scheduling information indicated by a PDCCH, or the retransmission termination message is an acknowledgment frame ACK or a non-acknowledgment frame NACK indicated by a PDCCH.

[0126] Optionally, the first moment is the moment of first transmission of PUSCH.

[0127] Optionally, the first transmission of PUSCH is the first of k retransmissions of PUSCH, k is a maximum number of retransmissions, and k is a positive integer greater than or equal to 1.

[0128] Optionally, the first moment is the moment of the kth transmission of the PUSCH, k is the maximum number of retransmissions, and k is a positive integer greater than or equal to 1.

[0129] Optionally, the maximum number of retransmissions is configured by the network device for the asynchronous HARQ process.

[0130] Optionally, the maximum number of retransmissions is preconfigured for the asynchronous HARQ process.

[0131] It should be understood that the above and other operations and / or functions of each module in a terminal device 400 according to an embodiment of the present application are respectively to achieve Figure 2 For the sake of brevity, the corresponding process of the terminal device in method 200 is not repeated here.

[0132] Figure 5 FIG is a schematic block diagram of a terminal device 500 according to an embodiment of the present application. Figure 5 As shown, the terminal device 500 includes:

[0133] The processing unit 510 is configured to determine whether an uplink grant exists at a current moment, where the uplink grant indicates an asynchronous hybrid automatic repeat request HARQ process for transmitting an uplink shared channel PUSCH;

[0134] The processing unit 510 is further configured to start an uplink HARQ cycle time RTT timer for the asynchronous HARQ process at a first moment.

[0135] Optionally, the terminal device 500 further includes:

[0136] The receiving unit 520 is configured to receive a retransmission termination message fed back by the network device when performing an n-th PUSCH transmission, where n is a positive integer less than or equal to k, k is a maximum number of retransmissions, and k is a positive integer greater than or equal to 1;

[0137] The processing unit 510 is further configured to determine the first moment as the moment of the nth PUSCH transmission.

[0138] Optionally, the retransmission termination message is dynamic scheduling information indicated by a PDCCH, or the retransmission termination message is an acknowledgment frame ACK or a non-acknowledgment frame NACK indicated by a PDCCH.

[0139] Optionally, the first moment is the moment of first transmission of PUSCH.

[0140] Optionally, the first transmission of PUSCH is the first of k retransmissions of PUSCH, k is a maximum number of retransmissions, and k is a positive integer greater than or equal to 1.

[0141] Optionally, the first moment is the moment of the kth transmission of the PUSCH, k is the maximum number of retransmissions, and k is a positive integer greater than or equal to 1.

[0142] Optionally, the maximum number of retransmissions is configured by the network device for the asynchronous HARQ process.

[0143] Optionally, the maximum number of retransmissions is preconfigured for the asynchronous HARQ process.

[0144] It should be understood that the above and other operations and / or functions of each module in a terminal device 500 according to an embodiment of the present application are respectively to achieve Figure 3 For the sake of brevity, the corresponding process of the terminal device in method 300 is not repeated here.

[0145] Figure 6 A schematic block diagram of a wireless communication device 600 provided in an embodiment of the present application is shown. The device 600 includes:

[0146] Memory 610, for storing a program, the program including codes;

[0147] transceiver 620, for communicating with other devices;

[0148] The processor 630 is configured to execute the program code in the memory 610 .

[0149] Optionally, the transceiver 620 is configured to perform specific signal transmission and reception under the drive of the processor 630 .

[0150] Optionally, when the code is executed, the processor 630 may also implement Figure 2 Method 200 and Figure 3 For the sake of brevity, the various operations performed by the terminal device in the method 300 are not described here. At this time, the device 600 can be a terminal device, such as a mobile phone.

[0151] It should be understood that in the embodiment of the present application, the processor 630 may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor.

[0152] The memory 610 may include a read-only memory and a random access memory, and provides instructions and data to the processor 630. A portion of the memory 610 may also include a non-volatile random access memory. For example, the memory 610 may also store information about the device type.

[0153] The transceiver 620 may be configured to implement signal transmission and reception functions, such as frequency modulation and demodulation functions or up-conversion and down-conversion functions.

[0154] During implementation, at least one step of the above method can be completed by the integrated logic circuit of the hardware in the processor 630, or the integrated logic circuit can complete the at least one step under the drive of instructions in the form of software. Therefore, the wireless communication device 600 can be a chip or a chipset. The steps of the method disclosed in conjunction with the embodiments of the present application can be directly embodied as being executed by a hardware processor, or can be executed by a combination of hardware and software modules in the processor. The software module can be located in a storage medium mature in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor 630 reads the information in the memory and completes the steps of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.

[0155] Figure 7 is a schematic structural diagram of a system chip 700 according to an embodiment of the present application. Figure 7 The system chip 700 includes an input interface 701 , an output interface 702 , a processor 703 and a memory 704 , which can be connected via internal communication lines. The processor 703 is used to execute the code in the memory 704 .

[0156] Optionally, when the code is executed, the processor 703 implements the method executed by the terminal device in the method embodiment. For the sake of brevity, no further details are given here.

[0157] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When software is used for implementation, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrations. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state drive (SSD)).

[0158] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0159] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described systems, devices, and units can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0160] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A wireless communication method, characterized in that: include: The terminal device monitors a downlink control channel PDCCH during a discontinuous reception DRX period, where the PDCCH carries an uplink grant indicating an asynchronous hybrid automatic repeat request HARQ process for transmitting an uplink shared channel PUSCH; After detecting the PDCCH, the terminal device starts an uplink HARQ cycle time RTT timer for the asynchronous HARQ process at the first moment, The method further comprises: When transmitting the PUSCH for the nth time, the terminal device receives a retransmission termination message fed back by the network device, where n is a positive integer less than or equal to k, k is a maximum number of retransmissions, and k is a positive integer greater than or equal to 1; The terminal device determines the first moment as the moment of the nth transmission of PUSCH.

2. The method according to claim 1, characterized in that The retransmission termination message is dynamic scheduling information indicated by a PDCCH, or the retransmission termination message is an acknowledgement frame ACK or a non-acknowledgement frame NACK indicated by a PDCCH.

3. The method according to claim 1 or 2, characterized in that The maximum number of retransmissions is configured by the network device for the asynchronous HARQ process.

4. The method according to claim 1 or 2, characterized in that The maximum number of retransmissions is preconfigured for the asynchronous HARQ process.

5. A wireless communication method, characterized in that: include: The terminal device determines that it has an uplink grant at a current moment, where the uplink grant indicates an asynchronous hybrid automatic repeat request HARQ process for transmitting an uplink shared channel PUSCH; The terminal device starts an uplink HARQ cycle time RTT timer for the asynchronous HARQ process at a first moment, The method further comprises: When transmitting the PUSCH for the nth time, the terminal device receives a retransmission termination message fed back by the network device, where n is a positive integer less than or equal to k, k is a maximum number of retransmissions, and k is a positive integer greater than or equal to 1; The terminal device determines the first moment as the moment of the nth transmission of PUSCH.

6. The method according to claim 5, characterized in that The retransmission termination message is dynamic scheduling information indicated by a PDCCH, or the retransmission termination message is an acknowledgement frame ACK or a non-acknowledgement frame NACK indicated by a PDCCH.

7. The method according to claim 5 or 6, characterized in that The maximum number of retransmissions is configured by the network device for the asynchronous HARQ process.

8. The method according to claim 5 or 6, characterized in that The maximum number of retransmissions is preconfigured for the asynchronous HARQ process.

9. A terminal device, characterized in that: include: a processing unit, configured to monitor a downlink control channel PDCCH during a discontinuous reception (DRX) period, wherein the PDCCH carries an uplink grant, and the uplink grant indicates an asynchronous hybrid automatic repeat request (HARQ) process for transmitting an uplink shared channel (PUSCH); After the processing unit detects the PDCCH, the processing unit starts an uplink HARQ cycle time RTT timer for the asynchronous HARQ process at a first moment, The terminal device further includes: a receiving unit, configured to receive a retransmission termination message fed back by a network device when performing an n-th PUSCH transmission, where n is a positive integer less than or equal to k, k is a maximum number of retransmissions, and k is a positive integer greater than or equal to 1; The processing unit is further configured to determine that the first moment is a moment of n-th PUSCH transmission.

10. The terminal device according to claim 9, characterized in that The retransmission termination message is dynamic scheduling information indicated by a PDCCH, or the retransmission termination message is an acknowledgement frame ACK or a non-acknowledgement frame NACK indicated by a PDCCH.

11. The terminal device according to claim 9 or 10, characterized in that: The maximum number of retransmissions is configured by the network device for the asynchronous HARQ process.

12. The terminal device according to claim 9 or 10, characterized in that: The maximum number of retransmissions is preconfigured for the asynchronous HARQ process.

13. A terminal device, characterized in that: include: a processing unit, configured to determine whether an uplink grant exists at a current moment, wherein the uplink grant indicates an asynchronous hybrid automatic repeat request HARQ process for transmitting an uplink shared channel PUSCH; The processing unit is further configured to start an uplink HARQ cycle time RTT timer for the asynchronous HARQ process at a first moment, The terminal device further includes: a receiving unit, configured to receive a retransmission termination message fed back by a network device when performing an n-th PUSCH transmission, where n is a positive integer less than or equal to k, k is a maximum number of retransmissions, and k is a positive integer greater than or equal to 1; The processing unit is further configured to determine that the first moment is a moment of n-th PUSCH transmission.

14. The terminal device according to claim 13, characterized in that The retransmission termination message is dynamic scheduling information indicated by a PDCCH, or the retransmission termination message is an acknowledgement frame ACK or a non-acknowledgement frame NACK indicated by a PDCCH.

15. The terminal device according to claim 13 or 14, characterized in that: The maximum number of retransmissions is configured by the network device for the asynchronous HARQ process.

16. The terminal device according to claim 13 or 14, characterized in that: The maximum number of retransmissions is preconfigured for the asynchronous HARQ process.

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