Wireless communication method, terminal equipment and network equipment

Abstract

Provided in an embodiment of the present invention are a wireless communication method, a terminal device and a network device, which are applied to the technical field of communications, the embodiment of the present invention comprising: when the terminal device receives a first PDSCH transmitted by a first HARQ process scheduled by the network device, the terminal device sends a first PDSCH to a first HARQ process before a first moment; a second PDSCH transmitted by the first HARQ process scheduled by the network equipment is not expected to be received again; wherein the first moment is determined according to a second moment, and the second moment is a transmission ending moment when the terminal device sends first hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback information corresponding to the first PDSCH to the network device, or the second moment is a transmission ending moment when the terminal device receives the first PDSCH.

Description

[0001] This application is a divisional application of the invention patent application with application number 202080104393.4 filed on August 3, 2020 and invention name “A wireless communication method, terminal equipment and network equipment”. Technical Field

[0002] The present invention relates to the field of communication technology, and in particular to a wireless communication method, terminal equipment and network equipment. Background Art

[0003] In TN networks, since the timing advance (TA) is in the order of microseconds, the impact on scheduling is not significant (usually not more than one time slot). Therefore, in the new radio (NR) system, the scheduling restrictions for the HARQ process are as follows: if the terminal device receives a PDSCH for a certain HARQ process to be scheduled by the network device, before the terminal device sends the feedback information of the HARQ process corresponding to the PDSCH to the network device, the terminal device does not expect to receive other PDSCHs for the HARQ process to be scheduled by the network device again. In NTN networks, the timing advance (TA) is usually greater than or equal to one time slot, so the existing scheduling restrictions for HARQ processes do not apply to NTN networks. Therefore, in non-Terrestrial Network (NTN) networks, how to determine the scheduling restrictions for HARQ processes is an urgent problem to be solved. Summary of the invention

[0004] The embodiments of the present invention provide a wireless communication method, a terminal device and a network device, which can solve the problem of how to perform scheduling restriction of a HARQ process in an NTN network.

[0005] In a first aspect, a wireless communication method is provided, including:

[0006] In the case where the terminal device receives the first physical downlink shared channel PDSCH scheduled by the network device for transmission of the first hybrid automatic repeat request HARQ process, the terminal device does not expect to receive the second PDSCH scheduled by the network device for transmission of the first HARQ process again before the first moment;

[0007] Among them, the first moment is determined according to the second moment, and the second moment is the transmission end moment when the terminal device sends the first hybrid automatic repeat request response HARQ-ACK feedback information corresponding to the first PDSCH to the network device, or the second moment is the transmission end moment when the terminal device receives the first PDSCH.

[0008] In a second aspect, a wireless communication method is provided, including:

[0009] In the case where the network device schedules the first hybrid automatic repeat request HARQ process to transmit the first PDSCH to the terminal device, the network device no longer schedules the first HARQ process to transmit the second PDSCH to the terminal device before the first moment;

[0010] The first moment is the transmission end moment when the network device receives the first HARQ-ACK feedback information corresponding to the first PDSCH sent by the terminal device, or the first moment is determined according to the second moment, and the second moment is the transmission end moment when the network device sends the first PDSCH.

[0011] In a third aspect, a terminal device is provided, including: a processing module, configured to, when the terminal device receives a first physical downlink shared channel PDSCH scheduled by a network device for transmission of a first hybrid automatic repeat request HARQ process, the terminal device does not expect to receive a second PDSCH scheduled by the network device for transmission of the first HARQ process again before a first moment;

[0012] Among them, the first moment is determined according to the second moment, and the second moment is the transmission end moment when the terminal device sends the first hybrid automatic repeat request response HARQ-ACK feedback information corresponding to the first PDSCH to the network device, or the second moment is the transmission end moment when the terminal device receives the first PDSCH.

[0013] In a fourth aspect, a network device is provided, including: a processing module, configured to, when scheduling a first hybrid automatic repeat request HARQ process to transmit a first PDSCH to a terminal device, the network device no longer schedules the first HARQ process to transmit a second PDSCH to the terminal device before a first moment;

[0014] The first moment is the transmission end moment when the network device receives the first HARQ-ACK feedback information corresponding to the first PDSCH sent by the terminal device, or the first moment is determined according to the second moment, and the second moment is the transmission end moment when the network device sends the first PDSCH.

[0015] In a fifth aspect, a terminal device is provided, comprising: a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein when the computer program is executed by the processor, the wireless communication method of the first aspect is implemented.

[0016] In a sixth aspect, a network device is provided, including:

[0017] A processor, a memory, and a computer program stored in the memory and executable on the processor, wherein when the computer program is executed by the processor, the wireless communication method according to the second aspect is implemented.

[0018] In the seventh aspect, a computer-readable storage medium is provided, comprising: computer instructions, which, when executed on a computer, enable the computer to execute a method as described in the first aspect or any optional implementation of the first aspect, or to execute a method as described in the second aspect or any optional implementation of the second aspect.

[0019] In an eighth aspect, a computer program product is provided, comprising computer instructions. When the computer program product runs on a computer, the computer executes the computer instructions so that the computer executes a method as described in the first aspect or any optional implementation of the first aspect, or executes a method as described in the second aspect or any optional implementation of the second aspect.

[0020] In the ninth aspect, a chip is provided, which is coupled to a memory in a terminal device, so that the chip calls program instructions stored in the memory during operation, so that the terminal device executes a method such as the first aspect or any optional implementation method of the first aspect, or so that the network device executes the second aspect or any optional implementation method of the second aspect.

[0021] In an embodiment of the present invention, when a terminal device receives a first PDSCH for transmission of a first HARQ process scheduled by a network device, the terminal device does not expect to receive a second PDSCH for transmission of the first HARQ process scheduled by the network device again before a first moment; wherein the first moment is determined according to a second moment, and the second moment is the end moment of transmission of the first hybrid automatic repeat request response HARQ-ACK feedback information corresponding to the first PDSCH sent by the terminal device to the network device, or the second moment is the end moment of transmission of the first PDSCH received by the terminal device. Through this solution, the scheduling restrictions of HARQ in the NTN network can be enhanced, avoiding errors in the scheduling of HARQ processes in the NTN system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1A A schematic diagram of the architecture of a wireless communication system provided by an embodiment of the present invention;

[0023] Figure 1B A schematic diagram of the architecture of a wireless communication system provided by an embodiment of the present invention;

[0024] Figure 1C A schematic diagram of the architecture of a wireless communication system provided by an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of a timing relationship in an NTN system provided by an embodiment of the present invention;

[0026] Figure 3 A timing relationship diagram in an NTN system provided by an embodiment of the present invention Figure 2 ;

[0027] Figure 4 A schematic diagram 1 of a HARQ process feedback and reuse timing provided by an embodiment of the present invention;

[0028] Figure 5 A schematic diagram of a HARQ process feedback and reuse timing provided by an embodiment of the present invention Figure 2 ;

[0029] Figure 6 Schematic diagram 1 of a wireless communication method provided by an embodiment of the present invention;

[0030] Figure 7 A schematic diagram of a HARQ process feedback and reuse timing provided by an embodiment of the present invention Figure 3 ;

[0031] Fig. 8A A wireless communication method provided by an embodiment of the present invention is schematically shown Figure 2 ;

[0032] Figure 8B A schematic diagram of the structure of a terminal device provided by an embodiment of the present invention;

[0033] Fig. 9 A schematic diagram of the structure of a network device provided by an embodiment of the present invention;

[0034] Fig.10 A schematic diagram of the structure of a base station provided in an embodiment of the present invention;

[0035] Fig.11 A schematic structural diagram of a mobile phone provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0037] The following is a brief description of some of the terms involved in this application, as follows:

[0038] The research of the next generation (new wireless communication system) (New radio, NR) system currently mainly considers two frequency bands, frequency band FR1 (Frequency range 1) and frequency band FR2 (Frequency range 2), wherein the frequency domain ranges included in FR1 and FR2 are shown in Table 1. It should be understood that the embodiments of the present application can be applied to the FR1 and FR2 frequency bands, and can also be applied to other frequency bands, such as the frequency band of 52.6 GHz to 71 GHz, or the frequency band of 71 GHz to 100 GHz, etc., and the present application is not limited to this.

[0039] Frequency band definition Corresponding frequency range FR1 410MHz–7.125GHz FR2 24.25GHz–52.6GHz

[0040] Table 1

[0041] The research on NR system includes non-terrestrial network equipment (NTN) technology. NTN generally uses satellite communication to provide communication services to ground users. Compared with ground cellular network communication, satellite communication has many unique advantages. First, satellite communication is not limited by the user's geographical location. For example, general land communication cannot cover areas such as oceans, mountains, deserts, etc. where communication equipment cannot be set up or where communication coverage is not provided due to sparse population. For satellite communication, since one satellite can cover a large area of ​​land, and satellites can orbit the earth, in theory every corner of the earth can be covered by satellite communication. Secondly, satellite communication has great social value. Satellite communication can be covered at a low cost in remote mountainous areas, poor and backward countries or regions, so that people in these areas can enjoy advanced voice communication and mobile Internet technology, which is conducive to narrowing the digital divide with developed areas and promoting the development of these areas. Thirdly, satellite communication has a long distance, and the cost of communication does not increase significantly as the communication distance increases; finally, satellite communication has high stability and is not restricted by natural disasters.

[0042] According to the different orbital altitudes, communication satellites are divided into LEO (Low-Earth Orbit) satellites, MEO (Medium-Earth Orbit) satellites, GEO (Geostationary Earth Orbit) satellites, HEO (High Elliptical Orbit) satellites, etc. At present, the main research is on LEO and GEO.

[0043] For LEO satellites, the orbital altitude ranges from 500km to 1500km, and the corresponding orbital period is about 1.5 hours to 2 hours. The signal propagation delay of single-hop communication between terminals is generally less than 20ms. The maximum satellite visibility time is 20 minutes. The signal propagation distance is short, the link loss is small, and the transmission power requirement for the terminal is not high.

[0044] For GEO satellites, the orbital altitude is 35786km, and the rotation period around the earth is 24 hours. The signal propagation delay of single-hop communication between users is generally 250ms.

[0045] In order to ensure satellite coverage and improve the system capacity of the entire satellite communication system, satellites use multiple beams to cover the ground. A satellite can form dozens or even hundreds of beams to cover the ground; a satellite beam can cover a ground area with a diameter of tens to hundreds of kilometers.

[0046] For example, Figure 1A The following is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application. Figure 1A As shown, the communication system 100 may include a network device 110, which may be a device that communicates with a terminal device 120 (or a communication terminal or terminal). The network device 110 may provide communication coverage for a specific geographic area and may communicate with terminal devices located in the coverage area.

[0047] Figure 1A One network device and two terminal devices are shown exemplarily. Optionally, the communication system 100 may include multiple network devices and each network device may include another number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0048] For example, Figure 1B This is a schematic diagram of another communication system architecture provided in an embodiment of the present application. Figure 1B , including a terminal device 1101 and a satellite 1102, the terminal device 1101 and the satellite 1102 can communicate wirelessly. The network formed between the terminal device 1101 and the satellite 1102 can also be called NTN. Figure 1B In the architecture of the communication system shown, the satellite 1102 may have the function of a base station, and the terminal device 1101 and the satellite 1102 may communicate directly. In the system architecture, the satellite 1102 may be referred to as a network device. Optionally, the communication system may include multiple network devices 1102, and each network device 1102 may include other number of terminal devices within its coverage area, which is not limited in the embodiment of the present application.

[0049] For example, Figure 1CThis is a schematic diagram of another communication system architecture provided in an embodiment of the present application. Figure 1C , including terminal equipment 1201, satellite 1202 and base station 1203, terminal equipment 1201 and satellite 1202 can communicate wirelessly, and satellite 1202 and base station 1203 can communicate. The network formed by terminal equipment 1201, satellite 1202 and base station 1203 can also be called NTN. Figure 1C In the architecture of the communication system shown, the satellite 1202 may not have the function of a base station, and the communication between the terminal device 1201 and the base station 1203 needs to be transferred through the satellite 1202. In this system architecture, the base station 1203 can be called a network device. Optionally, the communication system may include multiple network devices 1203, and each network device 1203 may include other number of terminal devices within its coverage area, which is not limited in the embodiment of the present application.

[0050] It should be noted that Figure 1A-Figure 1C The system to which the present application is applicable is only illustrated in the form of an example. Of course, the method shown in the embodiment of the present application can also be applied to other systems, such as 5G communication system, LTE communication system, etc., and the embodiment of the present application does not make specific limitations on this.

[0051] Optionally, Figure 1A-Figure 1C The wireless communication system shown may also include other network entities such as a mobility management entity (MME) and an access and mobility management function (AMF), but this is not limited in the embodiments of the present application.

[0052] The embodiments of the present application describe various embodiments in conjunction with network devices and terminal devices, wherein the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

[0053] The terminal device can be a station (STAION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next-generation communication system such as an NR network, or a terminal device in a future evolved Public Land Mobile Network (PLMN) network, etc.

[0054] In the embodiments of the present application, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (for example, on airplanes, balloons and satellites, etc.).

[0055] In the embodiment of the present application, the terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self driving, a wireless terminal device in remote medical, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc.

[0056] As an example but not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable devices may also be referred to as wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also powerful functions achieved through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and fully or partially independent of smartphones, such as smart watches or smart glasses, as well as devices that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various types of smart bracelets and smart jewelry for vital sign monitoring.

[0057] Among them, the network equipment may include access network equipment and core network equipment. That is, the wireless communication system also includes multiple core networks for communicating with the access network equipment. The access network equipment may be an evolutionary base station (evolutional node B, referred to as eNB or e-NodeB) macro base station, micro base station (also called "small base station"), micro-micro base station, access point (AP), transmission point (TP) or new generation base station (new generation Node B, gNodeB) in a long-term evolution (LTE) system, a next-generation (mobile communication system) (next radio, NR) system or an authorized auxiliary access long-term evolution (LAA-LTE) system.

[0058] In an embodiment of the present application, the network device may be a device for communicating with a mobile device. The network device may be an access point (AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (EvolutionalNode B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and a network device (gNB) in an NR network, or a network device in a future evolved PLMN network, or a network device in an NTN network, etc.

[0059] As an example but not limitation, in an embodiment of the present application, the network device may have a mobile characteristic, for example, the network device may be a mobile device. Optionally, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. Optionally, the network device may also be a base station set up in a location such as land or water.

[0060] In an embodiment of the present application, the network device can provide services for a cell, and the terminal device communicates with the network device through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources). The cell can be a cell corresponding to the network device (for example, a base station), and the cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0061] It should be understood that the device with communication function in the network / system in the embodiment of the present application can be referred to as a communication device. Figure 3 Taking the communication system shown as an example, the communication equipment may include network equipment and terminal equipment with communication functions. The network equipment and terminal equipment may be specific equipment described in the embodiments of the present invention, which will not be repeated here; the communication equipment may also include other equipment in the communication system, such as network controllers, mobile management entities and other network entities, which are not limited to the embodiments of the present application.

[0062] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE on unlicensed spectrum (LTE-U) system, NR on unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity) system. Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

[0063] Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communications, but will also support, for example, device to device (Device to Device, D2D) communication, machine to machine (Machine to Machine, M2M) communication, machine type communication (Machine Type Communication, MTC), vehicle to vehicle (V2V) communication, or vehicle to everything (V2X) communication, etc. The embodiments of the present application can also be applied to these communication systems.

[0064] The communication system in the embodiment of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, or a standalone (SA) networking scenario.

[0065] Optionally, the communication system in the embodiment of the present application can be applied to an unlicensed spectrum, wherein the unlicensed spectrum can also be considered as a shared spectrum; or, the communication system in the embodiment of the present application can also be applied to an authorized spectrum, wherein the authorized spectrum can also be considered as an unshared spectrum.

[0066] Optionally, the embodiments of the present application may be applied to non-terrestrial communication networks (NTN) systems, and may also be applied to terrestrial communication networks (TN) systems.

[0067] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is only a description of 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 at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0068] It should be understood that the "indication" mentioned in the embodiments of the present application can be a direct indication, an indirect indication, or an indication of an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association relationship between A and B.

[0069] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between two items, or an association relationship between the two items, or a relationship between indication and being indicated, configuration and being configured, and the like.

[0070] Optionally, the indication information in the embodiment of the present application includes at least one of physical layer signaling such as downlink control information (Downlink Control Information, DCI), radio resource control (Radio Resource Control, RRC) signaling and media access control element (Media Access Control Control Element, MAC CE).

[0071] Optionally, the high-level parameters or high-level signaling in the embodiment of the present application include at least one of radio resource control (Radio Resource Control, RRC) signaling and media access control element (Media Access Control Control Element, MAC CE).

[0072] The technical solution of the present invention is further described below by way of embodiments. The embodiments of the present application include part or all of the following contents:

[0073] In the NTN system, as in the NR system, the user equipment (UE) needs to consider the impact of TA when performing uplink transmission. Since the propagation delay in the system is large, the range of TA values ​​is also relatively large. When the terminal device is scheduled to perform uplink transmission in time slot n, the terminal device needs to consider the round trip time (RTT) and transmit in advance during uplink transmission, so that the signal can arrive at the base station side in the uplink time slot n on the base station side. Specifically, the timing relationship in the NTN system may include at least one of the following optional situations, as follows: Figure 2 and Figure 3 shown.

[0074] Optionally, the downlink timeslot and uplink timeslot of the network device are aligned.

[0075] like Figure 2 As shown in the figure, like the NR system, the downlink time slot and uplink time slot of the network device are aligned, but the downlink time slot of the terminal device is not aligned with the uplink time slot of the terminal device. In order to align the uplink transmission of the terminal device with the uplink time slot of the network device, the terminal device needs to use a larger TA value. When performing uplink transmission, a larger offset value also needs to be introduced. For example, Figure 2 In some cases, the TA value can also be used to determine K offset value.

[0076] It should be noted that, in the accompanying drawings in the embodiments of the present invention, the downlink time slot of the network device or the timing corresponding to the downlink time slot is represented in the drawing as gNB DL; the uplink time slot of the network device or the timing corresponding to the uplink time slot is represented in the drawing as gNB UL; the downlink time slot of the terminal device or the timing corresponding to the downlink time slot is represented in the drawing as UE DL; the uplink time slot of the terminal device or the timing corresponding to the uplink time slot is represented in the drawing as UE UL.

[0077] Optionally, there is an offset value between the downlink time slot of the network device and the uplink time slot of the network device (ie Figure 3 gNB DL-UL frame timing offset shown in ).

[0078] like Figure 3 As shown in FIG. 1 , there is an offset value between the downlink time slot of the network device and the uplink time slot of the network device. In this case, if you want to align the uplink transmission of the terminal device with the uplink time slot of the network device, the terminal device only needs to use a smaller TA value. However, in this case, the network device may require additional scheduling complexity to handle the corresponding scheduling timing.

[0079] In terrestrial communication systems, the propagation delay of signal communication is usually less than 1ms. In NTN systems, due to the long communication distance between terminal equipment and satellites (or network equipment), the propagation delay of signal communication is very large, ranging from tens of milliseconds to hundreds of milliseconds, which is related to the satellite orbit height and the type of satellite communication service. In order to handle the relatively large propagation delay, the uplink transmission timing of terminal equipment in the NTN system needs to be enhanced compared to the NR system.

[0080] The transmission timing of HARQ-ACK feedback information on the physical uplink control channel (PUCCH) in the NR system is as follows: for the time slot of PUCCH transmission, if the end position of a physical downlink shared channel (PDSCH) reception is in time slot n or the end position of a PDCCH reception indicating SPS PDSCH release is in time slot n, the terminal device should transmit the corresponding HARQ-ACK feedback information on the PUCCH resources in time slot n+K1.

[0081] Among them, the hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback information includes: ACK information, or NACK information; K1 is the number of time slots, and the number of time slots can be indicated by the HARQ feedback timing indication (PDSCH-to-HARQ-timing-indicator) information field in the DCI format, or the number of time slots is provided by the HARQ feedback timing set (such as the dl-DataToUL-ACK parameter). When K1=0, the last time slot corresponding to the PUCCH transmission overlaps with the time slot of the PDSCH reception, or the last time slot corresponding to the PUCCH transmission overlaps with the time slot of the PDCCH reception indicating the release of the semi-persistent scheduling (SPS) PDSCH.

[0082] In order to work properly in the NTN system, or to overcome the large round-trip transmission delay in the NTN system, the above timing relationship needs to be enhanced. For example, an offset parameter K is introduced into the system. offset, and apply the parameter to the relevant timing relationship.

[0083] That is to say, the transmission timing of HARQ-ACK on PUCCH is: for the time slot of PUCCH transmission, the terminal device should transmit in time slot n+K1+K offset The corresponding HARQ-ACK information is transmitted on the PUCCH resources within the HARQ-ACK channel.

[0084] NR includes at least two levels of retransmission mechanism:

[0085] 1. HARQ mechanism of the medium access control (MAC) layer.

[0086] 2. Automatic repeat request (ARQ) mechanism of the Radio Link Control (RLC) layer.

[0087] The retransmission of lost or erroneous data is mainly handled by the HARQ mechanism of the MAC layer, supplemented by the retransmission function of the RLC layer. The HARQ mechanism of the MAC layer can provide fast retransmission, and the ARQ mechanism of the RLC layer can provide reliable data transmission.

[0088] Among them, HARQ uses a stop-and-wait protocol to send data. In the stop-and-wait protocol, after the sender sends a transport block (TB), it stops and waits for confirmation information. In this way, the sender stops and waits for confirmation after each transmission, which will result in very low user throughput. Therefore, NR uses multiple parallel HARQ processes. When a HARQ process is waiting for confirmation information, the sender can use another HARQ process to continue sending data. These HARQ processes together form a HARQ entity, which combines the stop-and-wait protocol to allow continuous data transmission. HARQ is divided into uplink HARQ and downlink HARQ. Uplink HARQ is for uplink data transmission, and downlink HARQ is for downlink data transmission. The two are independent of each other.

[0089] Based on the current NR protocol regulations, the terminal device has its own HARQ entity for each service cell. Each HARQ entity maintains a set of parallel downlink HARQ processes and a set of parallel uplink HARQ processes. Currently, each uplink and downlink carrier supports a maximum of 16 HARQ processes. The base station can indicate the maximum number of HARQ processes to the terminal device through RRC signaling semi-static configuration based on the deployment of network equipment. If the network equipment does not provide the corresponding configuration parameters, the default number of HARQ processes for the downlink is 8, and the maximum number of HARQ processes supported by each uplink carrier is always 16. Each HARQ process corresponds to a HARQ process ID. For the downlink, the broadcast control channel (BCCH) uses a dedicated broadcast HARQ process. For the uplink, message 3 (message3, Msg3) transmission in the random process uses HARQ ID 0.

[0090] The terminal device detects DCI according to the configured DCI format 1_0, DCI format 1_1 or DCI format 1_2 and performs PDSCH decoding according to the DCI scheduling. If the terminal device receives the first PDSCH scheduled by the network device for HARQ process transmission, before the terminal device sends the HARQ-ACK feedback information corresponding to the PDSCH to the network device, the terminal device does not expect to receive the second PDSCH scheduled by the network device for HARQ process transmission again. The transmission timing of the terminal device sending the HARQ-ACK feedback information to the network device is determined according to the HARQ feedback timing set. The HARQ feedback timing set can be preset or configured by the network device.

[0091] For example, for a PDSCH scheduled by DCI format 1_0, the HARQ feedback timing set is preset; for a PDSCH scheduled by DCI format 1_1 or DCI format 1_2, the HARQ feedback timing set may be configured by a network device. The preset HARQ feedback timing set includes multiple values, and the HARQ feedback timing set configured by the network device may include one or more values.

[0092] If the HARQ feedback timing set includes a value, the transmission timing of the terminal device when feeding back HARQ-ACK feedback information is determined according to the configuration value in the HARQ feedback timing set.

[0093] If the HARQ feedback timing set includes multiple values, the DCI format includes HARQ feedback timing indication (PDSCH-to-HARQ_feedback timing indicator) information, and the HARQ feedback timing indication information is used to dynamically indicate the time domain position of the HARQ feedback resource from the HARQ feedback timing set, such as the time slot of the HARQ feedback resource, usually represented by K1.

[0094] Exemplarily, the HARQ feedback timing set includes 8 values, the HARQ feedback timing indication information includes 3 bits, when the HARQ feedback timing indication information is 000, it indicates the first value in the HARQ feedback timing set, when the HARQ feedback timing indication information is 001, it indicates the second value in the HARQ feedback timing set, and so on. The transmission timing of the terminal device when feeding back HARQ-ACK is determined according to the configuration value in the HARQ feedback timing set indicated by the HARQ feedback timing indication information in the DCI.

[0095] For example, Figure 4 As shown, the network device sends a PDSCH for scheduling HARQ process x transmission to the terminal device at time slot n, and the terminal device receives the PDSCH scheduled by the network device for transmission using HARQ process x at time slot n, and is instructed to feed back the HARQ-ACK feedback information corresponding to the PDSCH at time slot n+6. Therefore, the terminal device transmits the HARQ-ACK feedback information corresponding to the PDSCH at time slot n+6, and before the transmission of the HARQ-ACK feedback information is completed, the terminal device does not expect to receive the PDSCH scheduled by the network device for transmission using the HARQ process x again.

[0096] In the scheduling process based on the HARQ process in the terrestrial communication system (TN) network, it is assumed that the terminal device receives the PDSCH scheduled by the network device to be transmitted using the HARQ process x at time slot n in the downlink time slot, and is instructed to feedback the HARQ-ACK feedback information corresponding to the PDSCH at time slot n+6, wherein the HARQ-ACK feedback information includes ACK information or NACK information. Therefore, the terminal device transmits the HARQ-ACK feedback information corresponding to the PDSCH at time slot n+6 in the uplink time slot, so that the network device side can receive the HARQ-ACK feedback information corresponding to the PDSCH at time slot n+6. Among them, the uplink time slot of the terminal device has an offset of TA relative to the downlink time slot of the terminal device, or in other words, the uplink time slot of the terminal device needs to consider the influence of TA relative to the downlink time slot of the terminal device. The uplink time slot and downlink time slot of the network device are aligned. The downlink time slot of the terminal device has a delay of the one-way transmission delay relative to the downlink time slot of the network device, and the uplink time slot of the terminal device has an advance of the one-way transmission delay relative to the uplink time slot of the network device.

[0097] After the network device receives the ACK or NACK information fed back by the terminal device for the HARQ process x in time slot n+6, it can reschedule the HARQ process x according to the feedback information. For example, if ACK is received, the network device can use HARQ process x to schedule new data transmission; or, if NACK is received, the network device can use HARQ process x to schedule the retransmission of the transmission block TB transmitted using HARQ process x in time slot n. Since the network device can determine whether to use the HARQ process x to schedule new data transmission or to schedule the previous transmission data for retransmission only after receiving the HARQ-ACK feedback information of the terminal device in time slot n+6, the terminal device does not expect to receive the downlink transmission scheduled by the network device using the HARQ process x before the network device receives the HARQ-ACK feedback information.

[0098] like Figure 5 As shown in FIG. 1 , the HARQ process feedback and reuse timing in the NR system. Assuming that the network device immediately reuses the HARQ process x to schedule the downlink transmission of the terminal device in time slot n+7 after receiving the HARQ-ACK feedback information in time slot n+6, the time difference between the moment when the terminal device may receive the scheduled HARQ process x transmission again and the moment when the terminal device finishes sending the HARQ-ACK feedback information is TA.

[0099] In the TN network, since TA is in the microsecond order (for example, it will not exceed one symbol under normal circumstances and will not exceed one time slot at most), the impact on scheduling is not significant. Therefore, in the NR system, if the terminal device receives the PDSCH for HARQ process x transmission scheduled by the network device, before the terminal device sends the HARQ-ACK feedback information corresponding to the PDSCH to the network device, the terminal device does not expect to receive other PDSCHs for HARQ process x transmission scheduled by the network device again.

[0100] In the NTN system, since the communication distance between the terminal device and the satellite (or network device) is very long, the round trip time (RTT) of the signal transmission is very long. In the GEO system, the RTT of the signal transmission can be in the order of hundreds of milliseconds, for example, the maximum RTT of the signal transmission can be about 600ms. In the LEO system, the RTT of the signal transmission can be in the order of tens of milliseconds. Since the RTT of the NTN system is much larger than the RTT of the terrestrial communication system, in the NTN system, the HARQ scheduling restrictions in the above-mentioned TN network are no longer applicable and need to be enhanced to ensure that the HARQ process in the NTN network can be correctly scheduled.

[0101] Based on the above problems, an embodiment of the present invention provides a wireless communication method, in which when a terminal device receives a first physical downlink shared channel PDSCH for transmission of a first HARQ process scheduled by a network device, the terminal device does not expect to receive a second PDSCH for transmission of the first HARQ process scheduled by the network device again before a first moment; wherein the first moment is determined according to a second moment, and the second moment is the end moment of transmission of the first HARQ-ACK feedback information corresponding to the first PDSCH sent by the terminal device to the network device, or the second moment is the end moment of transmission of the first PDSCH received by the terminal device. Through this scheme, the scheduling restrictions of the HARQ process in the NTN network can be enhanced, thereby avoiding errors in the HARQ process scheduling in the NTN system.

[0102] like Figure 6 As shown, an embodiment of the present invention provides a wireless communication method, the method comprising:

[0103] 601. A terminal device receives a first PDSCH scheduled by a network device for transmission in a first HARQ process.

[0104] 602. Before the first moment, the terminal device does not expect to receive the second PDSCH scheduled by the network device for transmission in the first HARQ process again.

[0105] For the terminal device: the first moment is determined based on the second moment.

[0106] It should be understood that in the method of the embodiment of the present invention, if a certain moment is a moment in the uplink time slot of the terminal device, it can mean: the moment is a moment in the time sequence corresponding to the uplink time slot of the terminal device. If a certain moment is a moment in the downlink time slot of the terminal device, it can mean: the moment is a moment in the time sequence corresponding to the downlink time slot of the terminal device.

[0107] Optionally, the advance amount of the uplink time slot of the terminal device relative to the downlink time slot of the terminal device is TA.

[0108] Optionally, the second moment may include at least one of the following possible situations:

[0109] (1) The second moment is the moment when the terminal device ends transmission of the first hybrid automatic repeat request response HARQ-ACK feedback information corresponding to the first PDSCH to the network device.

[0110] Optionally, one possible situation in the above (1) is that the second moment is a moment in the uplink time slot of the terminal device, and the first moment is a moment in the downlink time slot of the terminal device corresponding to the second moment. For example, assuming that the second moment is the end moment of the last symbol in the uplink time slot n+K1+Koffset of the terminal device, the first moment is the end moment of the last symbol in the downlink time slot n+K1+Koffset of the terminal device.

[0111] Optionally, the time length by which the second moment is advanced relative to the first moment is a timing advance TA length.

[0112] Optionally, another possible situation in the above (1) is: the first moment is determined based on the second moment and the first duration.

[0113] Optionally, the second moment is a moment in an uplink time slot of the terminal device, and / or the first moment is a moment in an uplink time slot of the terminal device.

[0114] Optionally, the first duration is determined according to first information, and the first information includes at least one of the following:

[0115] TA length, offset parameter and round-trip transmission delay RTT;

[0116] The offset parameter is the time slot offset of the uplink time slot of the terminal device relative to the downlink time slot of the terminal device, or the offset parameter is the offset value of the uplink transmission timing of the terminal device. For example, the offset parameter is the above K offset .

[0117] Optionally, the above offset parameters may be preset.

[0118] Optionally, the above offset parameter can be determined according to the first indication information of the network device.

[0119] Optionally, the unit of the above offset parameter is time slot or sub-time slot.

[0120] Optionally, the unit of TA length is milliseconds or microseconds.

[0121] Optionally, the first information is preset, or the first information is determined according to first indication information of the network device.

[0122] Optionally, the first duration is preset, or the first duration is determined according to second indication information of the network device.

[0123] (2) The second moment is the moment when the terminal device ends transmission of the first PDSCH.

[0124] Optionally, the second moment is a moment in a downlink time slot of the terminal device.

[0125] Optionally, the first moment is a moment in a downlink time slot of the terminal device.

[0126] Optionally, the second duration is the length of time between the second moment and the first moment.

[0127] Optionally, the first moment is determined based on the second moment and the second duration.

[0128] Optionally, the second duration is determined based on HARQ feedback timing information.

[0129] Optionally, the HARQ feedback timing information is determined according to the K1 value and / or the offset parameter.

[0130] The offset parameter is the time slot offset of the uplink time slot of the terminal device relative to the downlink time slot of the terminal device, or the offset parameter is the offset value of the uplink transmission timing of the terminal device.

[0131] The above-mentioned determination of HARQ feedback timing information includes:

[0132] An optional implementation manner: HARQ feedback timing information is determined according to K1+Koffset.

[0133] It is determined by combining the two parameters K1 and Koffset. For example, if Koffset=13, and the network device indicates K1=5, then it can be determined that the HARQ feedback timing information is 18 time slots.

[0134] Another optional implementation: HARQ feedback timing information is determined according to K1. Optionally, the network device has considered the influence of the offset parameter when indicating the HARQ feedback timing through K1. For example, the network device indicates K1=18, where K1 includes the size of the offset parameter corresponding to TA, or in other words, the indicated K1 value already includes Koffset. For example, Koffset is 13 time slots.

[0135] Optionally, the first HARQ-ACK feedback information includes: ACK, or NACK. For example, the first HARQ-ACK feedback information is ACK information or NACK information obtained by decoding the first PDSCH.

[0136] Optionally, the first PDSCH includes at least one of the following three situations:

[0137] (1) Scheduled PDSCH;

[0138] (2) Semi-persistent scheduling SPS PDSCH;

[0139] (3) Scheduled PDSCH and semi-persistent scheduling SPS PDSCH.

[0140] Optionally, the terminal device is a terminal device in an NTN system, and the network device is a network device in the NTN system.

[0141] When the terminal device receives the first PDSCH scheduled by the network device for transmission of the first HARQ process, the terminal device does not expect to receive the second PDSCH scheduled by the network device for transmission of the first HARQ process again before the first moment.

[0142] For example, Figure 7 The HARQ process feedback and reuse timing in the NTN system are shown. The uplink time slot and downlink time slot of the network device are aligned. The downlink time slot of the terminal device has a delay of the one-way transmission delay relative to the downlink time slot of the network device, and the uplink time slot of the terminal device has an advance of the one-way transmission delay relative to the uplink time slot of the network device. The uplink time slot of the terminal device has a TA offset relative to the downlink time slot of the terminal device, or in other words, the uplink time slot of the terminal device needs to consider the influence of TA relative to the downlink time slot of the terminal device. In this example, the length of TA is about 13 time slots, or the offset parameter Koffset takes a value of 13. Accordingly, the one-way transmission delay is about 6.5 time slots.

[0143] Assume that the terminal device receives the first PDSCH scheduled by the network device to be transmitted using the HARQ process x (which can be understood as the first HARQ process in the embodiment of the present invention) at time slot n in the downlink time slot of the terminal device, and is instructed to feed back the HARQ-ACK feedback information corresponding to the first PDSCH at time slot n+18. Therefore, the terminal device can transmit the HARQ-ACK feedback information at time slot n+18 in the uplink time slot of the terminal device, so that the network device can receive the HARQ-ACK feedback information at time slot n+18 in the uplink time slot of the network device.

[0144] After the network device receives the ACK or NACK fed back by the terminal device for the HARQ process x in the time slot n+18 in the uplink time slot of the network device, the HARQ process x can be rescheduled according to the feedback information. For example, if an ACK is received, the network device can use the HARQ process x to schedule new data transmission; if a NACK is received, the network device can use the HARQ process x to schedule the retransmission of the transmission block TB transmitted using the HARQ process x in the time slot n.

[0145] Since the network device can determine whether to use the HARQ process x to schedule new data transmission or to schedule retransmission of the previous transmission data only after receiving the HARQ-ACK feedback information sent by the terminal device in time slot n+18 in the uplink time slot of the network device, assuming that the network device reuses the HARQ process x to schedule the downlink transmission of the terminal device in time slot n+19 in the downlink time slot of the network device immediately after receiving the HARQ-ACK feedback information in time slot n+18 in the uplink time slot of the network device, the terminal device may receive the time slot for scheduling the transmission of HARQ process x again as time slot n+19 in the downlink time slot of the terminal device.

[0146] Exemplarily, for the case where the second moment is the transmission end moment of the first hybrid automatic repeat request response HARQ-ACK feedback information corresponding to the first PDSCH sent by the terminal device to the network device, and the second moment is the moment in the uplink time slot of the terminal device, and the first moment is the moment in the downlink time slot of the terminal device corresponding to the second moment, in the above Figure 7 The second moment may be the end moment of the HARQ-ACK transmission in time slot n+18 in the uplink time slot of the terminal device. Figure 7 In the embodiment of the present invention, the first moment is the moment in the downlink time slot n+18 corresponding to the end moment of the HARQ-ACK transmission in the time slot n+18 in the uplink time slot of the terminal device. That is to say, in the embodiment of the present invention, before the moment in the downlink time slot n+18 of the terminal device, the terminal device does not expect to receive the second PDSCH for the HARQ process x transmission scheduled by the network device again.

[0147] Exemplarily, for the case where the second moment is the transmission end moment of the first hybrid automatic repeat request response HARQ-ACK feedback information corresponding to the first PDSCH sent by the terminal device to the network device, and the first moment is determined according to the second moment and the first duration, in the above Figure 7 The second moment may be the end moment of the HARQ-ACK transmission in the time slot n+18 in the uplink time slot of the terminal device. The terminal device may determine that the first moment is the corresponding moment in the downlink time slot n+18 of the terminal device according to the end moment of the HARQ-ACK transmission in the time slot n+18 and the first duration (the first duration is determined according to the TA length, the offset parameter or the RTT).

[0148] Exemplarily, for the case where the second moment is the transmission end moment of the first PDSCH received by the terminal device, and the first moment is determined according to the second moment and the second duration, in the above Figure 7 In the figure, the second time may be the end time of the first PDSCH transmission in time slot n in the downlink time slot of the terminal device. The terminal device may determine the end time of the first PDSCH transmission in time slot n in combination with the second duration (ie, TA or K in the figure). offset ) determines that the above-mentioned first moment is the corresponding moment in the downlink time slot n+18 of the terminal device.

[0149] In an embodiment of the present invention, when a terminal device receives a first PDSCH for transmission of a first HARQ process scheduled by a network device, the terminal device does not expect to receive a second PDSCH for transmission of the first HARQ process scheduled by the network device again before a first moment; wherein the first moment is determined according to a second moment, and the second moment is the end moment of transmission of the first hybrid automatic repeat request response HARQ-ACK feedback information corresponding to the first PDSCH sent by the terminal device to the network device, or the second moment is the end moment of transmission of the first PDSCH received by the terminal device. Through this solution, the scheduling restrictions of HARQ in the NTN network can be enhanced, avoiding errors in the scheduling of HARQ processes in the NTN system.

[0150] Optionally, an embodiment of the present invention also provides a wireless communication method, the method comprising: when a terminal device receives a first PDSCH scheduled by a network device for transmission of a first HARQ process, the terminal device does not expect to receive a second PDSCH scheduled by the network device for transmission of the first HARQ process again before the end of a first time unit.

[0151] Optionally, the time unit may be one of a time slot, a sub-time slot and a symbol.

[0152] For the terminal device: the first time unit is determined according to the second time unit, and the second time unit may include the following two possible situations:

[0153] (1) The second time unit is a time unit for the terminal device to send the first hybrid automatic repeat request response HARQ-ACK feedback information corresponding to the first PDSCH to the network device, or the second time unit is a time unit corresponding to the end moment when the terminal device sends the first HARQ-ACK feedback information corresponding to the first PDSCH to the network device.

[0154] Optionally, the second time unit is a time unit in an uplink time slot of the terminal device, and the first time unit is a time unit in a downlink time slot of the terminal device corresponding to the second time unit.

[0155] Optionally, the time length by which the second time unit is advanced relative to the first time unit is a timing advance TA length.

[0156] Optionally, the first time unit is determined based on the second time unit and the first duration.

[0157] Optionally, the second time unit is a time unit in an uplink time slot of the terminal device, and / or the first time unit is a time unit in an uplink time slot of the terminal device.

[0158] Optionally, the first duration is determined according to first information, and the first information includes at least one of the following:

[0159] TA length, offset parameter and round-trip transmission delay RTT;

[0160] The offset parameter is the time slot offset of the uplink time slot of the terminal device relative to the downlink time slot of the terminal device, or the offset parameter is the offset value of the uplink transmission timing of the terminal device.

[0161] Optionally, the above offset parameters may be preset.

[0162] Optionally, the above offset parameter can be determined according to the first indication information of the network device.

[0163] Optionally, the first information is preset, or the first information is determined according to first indication information of the network device.

[0164] Optionally, the first duration is preset, or the first duration is determined according to second indication information of the network device.

[0165] (2) The second time unit is a time unit in which the terminal device receives the first PDSCH, or the second time unit is a time unit corresponding to an end time at which the terminal device receives the first PDSCH.

[0166] Optionally, the second time unit is a time unit in a downlink time slot of the terminal device, and the first time unit is determined based on the second time unit and the second duration.

[0167] Optionally, the first time unit is a time unit in a downlink time slot of the terminal device, and the second time length is determined based on HARQ feedback timing information.

[0168] Optionally, the HARQ feedback timing information is determined according to the K1 value and / or the offset parameter.

[0169] Among them, the offset parameter is the time slot offset of the uplink time slot of the terminal device relative to the downlink time slot of the terminal device, or the offset parameter is the offset value of the uplink transmission timing of the terminal device.

[0170] Optionally, the first HARQ-ACK feedback information includes: ACK, or NACK.

[0171] Optionally, the first PDSCH includes at least one of the following three situations:

[0172] (1) Scheduled PDSCH;

[0173] (2) Semi-persistent scheduling SPS PDSCH;

[0174] (3) Scheduled PDSCH and semi-persistent scheduling SPS PDSCH.

[0175] Optionally, the terminal device is a terminal device in an NTN system, and the network device is a network device in the NTN system.

[0176] When the terminal device receives the first PDSCH scheduled by the network device for transmission of the first HARQ process, the terminal device does not expect to receive the second PDSCH scheduled by the network device for transmission of the first HARQ process again before the end of the first time unit.

[0177] like Fig. 8A As shown, an embodiment of the present invention provides a wireless communication method, the method comprising:

[0178] 801. A network device schedules a first HARQ process to transmit a first PDSCH to a terminal device.

[0179] 802. Before the first moment, the network device no longer schedules the first HARQ process to transmit the second PDSCH to the terminal device.

[0180] In the embodiment of the present invention, when the network device schedules the first HARQ process to transmit the first PDSCH to the terminal device, the network device no longer schedules the first HARQ process to transmit the second PDSCH to the terminal device before the first moment.

[0181] Optionally, the first moment mentioned above is a moment in an uplink time slot of the network device.

[0182] For a network device, the first moment may be at least one of the following two situations:

[0183] (1) The first moment is the moment when the network device receives the transmission end of the first HARQ-ACK feedback information corresponding to the first PDSCH sent by the terminal device.

[0184] (2) The first moment is determined based on the second moment.

[0185] It should be understood that in the method of the embodiment of the present invention, if a certain moment is a moment in the uplink time slot of the network device, it may mean that the moment is a moment in the time sequence corresponding to the uplink time slot of the network device. If a certain moment is a moment in the downlink time slot of the network device, it may mean that the moment is a moment in the time sequence corresponding to the downlink time slot of the network device.

[0186] Optionally, a downlink timeslot of the network device and an uplink timeslot of the network device are aligned.

[0187] Optionally, the second moment is the moment when the network device ends transmission of the first PDSCH.

[0188] Optionally, the second moment is a moment in a downlink time slot of the network device, and the first moment is determined based on the second moment and the second duration.

[0189] Optionally, the second duration is determined based on HARQ feedback timing information.

[0190] Optionally, the HARQ feedback timing information is determined based on the K1 value and / or the offset parameter.

[0191] Among them, the offset parameter is the offset value of the uplink transmission timing of the terminal device.

[0192] Optionally, the first HARQ-ACK feedback information includes: ACK, or NACK.

[0193] Optionally, the first PDSCH includes at least one of the following three situations:

[0194] (1) Scheduled PDSCH;

[0195] (2) Semi-persistent scheduling SPS PDSCH;

[0196] (3) Scheduled PDSCH and semi-persistent scheduling SPS PDSCH.

[0197] Optionally, the terminal device is a terminal device in an NTN system, and the network device is a network device in the NTN system.

[0198] When the terminal device receives the first PDSCH scheduled by the network device for transmission of the first HARQ process, the terminal device does not expect to receive the second PDSCH scheduled by the network device for transmission of the first HARQ process again before the first moment.

[0199] Exemplarily, for the case where the first moment is the transmission end moment of the first HARQ-ACK feedback information corresponding to the first PDSCH sent by the terminal device to the network device, in Figure 7 In the example, the first moment is the end moment of time slot n+18 in the uplink time slot of the network device. That is to say, before the end moment of time slot n+18 in the uplink time slot of the network device, the network device no longer schedules the second PDSCH transmitted by HARQ process x to the terminal device, so that the earliest time slot that the terminal device can receive the second PDSCH transmitted by scheduling HARQ process x again is Figure 7 The time slot n+19 in the downlink time slot of the middle terminal device.

[0200] Exemplarily, for the case where the first moment is determined according to the second moment, and the second moment is the transmission end moment of the first PDSCH sent by the network device, and the second moment is the moment in the downlink time slot of the network device, Figure 7 The second moment can be the end moment of time slot n in the downlink time slot of the network device. According to the end moment of time slot n in the downlink time slot of the network device and the second duration (the second duration is determined by the K1 value and / or the offset parameter), it can be determined that the first moment is the end moment of time slot n+18 in the uplink time slot of the network device. There are two possibilities. If K1 is 18, the first moment is determined according to the end moment of time slot n in the downlink time slot of the network device and the second duration determined by K1 is 18 time slots; if K1 is 5 and the offset parameter is 13, the first moment is determined according to the end moment of time slot n in the downlink time slot of the network device and the second duration determined by K1 and the offset parameter is 18 time slots.

[0201] In an embodiment of the present invention, when a terminal device receives a first PDSCH for transmission of a first HARQ process scheduled by a network device, the terminal device does not expect to receive a second PDSCH for transmission of the first HARQ process scheduled by the network device again before the end of the first time unit, wherein the first moment is the end moment of transmission of the first HARQ-ACK feedback information corresponding to the first PDSCH sent by the terminal device received by the network device, or the first moment is determined based on the second moment, and the second moment is the end moment of transmission of the first PDSCH sent by the network device. Through this solution, the scheduling restrictions of HARQ in the NTN network can be enhanced, avoiding errors in the scheduling of HARQ processes in the NTN system.

[0202] A wireless communication method is also provided in an embodiment of the present invention, the method comprising: when a network device schedules a first HARQ process to transmit a first PDSCH to a terminal device, the network device no longer schedules the first HARQ process to transmit a second PDSCH to the terminal device before the end of a first time unit.

[0203] The above-mentioned first time unit is a time unit in an uplink time slot of the network device.

[0204] For network devices, the first time unit has the following two situations:

[0205] (1) The first time unit is a time unit in which the network device receives the first HARQ-ACK feedback information corresponding to the first PDSCH sent by the terminal device, or the first time unit is a time unit corresponding to the end time when the network device receives the first HARQ-ACK feedback information.

[0206] (2) The first time unit is determined based on the second time unit.

[0207] The second time unit is a time unit in which the network device sends the first PDSCH, or the second time unit is a time unit corresponding to an end time at which the network device sends the first PDSCH.

[0208] Optionally, the second time unit is a time unit in a downlink time slot of the network device, and the first time unit is determined based on the second time unit and the second duration.

[0209] Optionally, the second duration is determined based on HARQ feedback timing information.

[0210] Optionally, the HARQ feedback timing information is determined according to the K1 value and / or the offset parameter.

[0211] Among them, the offset parameter is the offset value of the uplink transmission timing of the terminal device.

[0212] Optionally, the first HARQ-ACK feedback information includes: ACK, or NACK.

[0213] Optionally, the first PDSCH includes at least one of the following three situations:

[0214] (1) Scheduled PDSCH;

[0215] (2) Semi-persistent scheduling SPS PDSCH;

[0216] (3) Scheduled PDSCH and semi-persistent scheduling SPS PDSCH.

[0217] Optionally, the terminal device is a terminal device in an NTN system, and the network device is a network device in the NTN system.

[0218] When the terminal device receives the first PDSCH scheduled by the network device for transmission of the first HARQ process, the terminal device does not expect to receive the second PDSCH scheduled by the network device for transmission of the first HARQ process again before the end of the first time unit.

[0219] In an embodiment of the present invention, when a terminal device receives a first PDSCH for transmission of a first HARQ process scheduled by a network device, the terminal device does not expect to receive a second PDSCH for transmission of the first HARQ process scheduled by the network device again before a first moment; wherein the first moment is determined according to a second moment, and the second moment is the end moment of transmission of the first hybrid automatic repeat request response HARQ-ACK feedback information corresponding to the first PDSCH sent by the terminal device to the network device, or the second moment is the end moment of transmission of the first PDSCH received by the terminal device. Through this solution, the scheduling restrictions of HARQ in the NTN network can be enhanced, avoiding errors in the scheduling of HARQ processes in the NTN system.

[0220] In the NR system, the terminal device can be configured with downlink semi-persistent scheduling (SPS) configuration resources, and determine whether to transmit SPS PDSCH on the SPS configuration resources through activation and deactivation signaling.

[0221] Optionally, one or more downlink SPS configuration resources may be configured in a cell group.

[0222] If the terminal device is configured and downlink SPS transmission is activated, the terminal device receives SPS PDSCH sent by the network device on the downlink SPS configuration resources, wherein the SPS PDSCH is periodically transmitted on the downlink SPS configuration resources and the SPS PDSCH has no corresponding PDCCH scheduling.

[0223] The HARQ process number associated with the SPS PDSCH is obtained according to the time slot where the downlink SPS configuration resource is located, including at least one of the following possible situations:

[0224] (1) SPS resources configured in Rel-15

[0225] HARQ process number = [floor (current time slot * 10 / (number of time slots included in each frame * first cycle))] mod HARQ process number.

[0226] Among them, the current time slot = [SFN*the number of time slots included in each frame+the time slot number in the frame].

[0227] (2) SPS resources configured in Rel-16:

[0228] HARQ process number = [floor (current time slot / second cycle)] mod HARQ process number + HARQ process number offset value.

[0229] Among them, the current time slot = [SFN*the number of time slots included in each frame+the time slot number in the frame].

[0230] Here, SFN refers to the system frame number of the cell.

[0231] The number of time slots included in each frame is determined according to the subcarrier spacing. For example, when the subcarrier spacing is 15kHz, each frame includes 10 time slots, when the subcarrier spacing is 30kHz, each frame includes 20 time slots, and when the subcarrier spacing is 60kHz, each frame includes 40 time slots.

[0232] The above HARQ process number, first cycle, second cycle and HARQ process number offset value can be configured by high-level signaling. Among them, the value range of the HARQ process number is 1 to 8; the unit of the first cycle is ms, and the minimum configuration cycle is 10ms; the unit of the second cycle is time slot, and the minimum configuration cycle is 1 time slot; the value range of the HARQ process number offset value is 0 to 15.

[0233] The SPS resources configured in the NTN system may include at least one of the following possible situations:

[0234] The first possible scenario:

[0235] In some possible implementations, the HARQ process number = [floor (current time slot*10 / (number of time slots included in each frame*first cycle))] mod the number of HARQ processes.

[0236] Among them, the current time slot = [SFN*the number of time slots included in each frame+the time slot number in the frame].

[0237] Optionally, the number of time slots included in each frame is determined according to the subcarrier spacing, for example, when the subcarrier spacing is 15kHz, each frame includes 10 time slots, when the subcarrier spacing is 30kHz, each frame includes 20 time slots, and when the subcarrier spacing is 60kHz, each frame includes 40 time slots. The number of HARQ processes and the first cycle are configured by high-level signaling.

[0238] Optionally, the value range of the HARQ process number is 1 to 8.

[0239] Optionally, the unit of the first period is millisecond (ms).

[0240] Optionally, the minimum configuration period of the above-mentioned first period is (10+third duration) milliseconds.

[0241] The second possible situation:

[0242] In some possible implementations: HARQ process number = [floor (current time slot * 10 / (number of time slots included in each frame * (first cycle + third duration)))] mod HARQ process number;

[0243] The number of time slots in each frame is determined by the subcarrier spacing. For example, when the subcarrier spacing is 15kHz, each frame includes 10 time slots, when the subcarrier spacing is 30kHz, each frame includes 20 time slots, and when the subcarrier spacing is 60kHz, each frame includes 40 time slots. The number of HARQ processes and the first cycle are configured by high-level signaling.

[0244] Optionally, the value range of the HARQ process number is 1 to 8.

[0245] Optionally, the unit of the first period is millisecond (ms).

[0246] Optionally, the minimum configuration period of the above-mentioned first period is 10 milliseconds.

[0247] The third possible scenario:

[0248] In some possible implementations, HARQ process number = [floor (current time slot / second cycle)] mod HARQ process number + HARQ process number offset value;

[0249] Among them, current time slot = [SFN * number of time slots included in each frame + time slot number in the frame]

[0250] The number of time slots included in each frame is determined according to the subcarrier spacing. For example, when the subcarrier spacing is 15kHz, each frame includes 10 time slots, when the subcarrier spacing is 30kHz, each frame includes 20 time slots, and when the subcarrier spacing is 60kHz, each frame includes 40 time slots. The number of HARQ processes, the second cycle, and the HARQ process number offset value are configured by high-level signaling.

[0251] Optionally, the value range of the HARQ process number is 1 to 16.

[0252] Optionally, the HARQ process number offset value ranges from 0 to 15.

[0253] Optionally, the unit of the second period is a time slot.

[0254] Optionally, the minimum configuration period of the above-mentioned second period is (1+fourth time length) time slots.

[0255] Optionally, the HARQ process number is greater than or equal to the HARQ process number offset value and less than the sum of the HARQ process number offset value and the HARQ process number. For example, if the HARQ process number offset value is 5 and the HARQ process number is 6, then the HARQ process number is greater than or equal to 5 and less than 11, that is, the HARQ process number includes HARQ processes 5, 6, 7, 8, 9, and 10.

[0256] The fourth possible scenario:

[0257] In some possible implementations, the HARQ process number = [floor (current time slot / (second period+fourth duration))] mod the number of HARQ processes + the HARQ process number offset value.

[0258] Among them, current time slot = [SFN * number of time slots included in each frame + time slot number in the frame]

[0259] The number of time slots included in each frame is determined according to the subcarrier spacing. For example, when the subcarrier spacing is 15kHz, each frame includes 10 time slots, when the subcarrier spacing is 30kHz, each frame includes 20 time slots, and when the subcarrier spacing is 60kHz, each frame includes 40 time slots. The number of HARQ processes, the second cycle, and the HARQ process number offset value are configured by high-level signaling.

[0260] Optionally, the value range of the HARQ process number is 1 to 16.

[0261] Optionally, the HARQ process number offset value ranges from 0 to 15.

[0262] Optionally, the unit of the second period is a time slot.

[0263] Optionally, the minimum configuration period of the above-mentioned second period is 1 time slot.

[0264] Optionally, the HARQ process number is greater than or equal to the HARQ process number offset value and less than the sum of the HARQ process number offset value and the HARQ process number.

[0265] Among the four possible situations above:

[0266] Optionally, the unit of the third duration is milliseconds.

[0267] Optionally, the third duration is based on the offset parameter K offset Sure.

[0268] Optionally, the third duration is preset or determined according to instruction information of the network device.

[0269] Optionally, the unit of the fourth time length is time slot.

[0270] Optionally, the fourth duration is based on the offset parameter K offset Sure.

[0271] Optionally, the fourth duration is preset or determined according to instruction information of the network device.

[0272] Corresponding to the method of at least one embodiment applied to a terminal device, the embodiment of the present application also provides one or more terminal devices. The terminal device of the embodiment of the present application can implement any one of the implementation modes of the above method. Figure 8B As shown, an embodiment of the present invention provides a terminal device, including: a processing module 81, configured to, when the terminal device receives a first physical downlink shared channel PDSCH scheduled by a network device for transmission of a first hybrid automatic repeat request HARQ process, the terminal device does not expect to receive a second PDSCH scheduled by the network device for transmission of the first HARQ process again before a first moment;

[0273] Among them, the first moment is determined according to the second moment, and the second moment is the transmission end moment when the terminal device sends the first hybrid automatic repeat request response HARQ-ACK feedback information corresponding to the first PDSCH to the network device, or the second moment is the transmission end moment when the terminal device receives the first PDSCH.

[0274] Optionally, the second moment is the transmission end moment when the terminal device sends the first HARQ-ACK feedback information corresponding to the first PDSCH to the network device;

[0275] The second moment is the moment in the uplink time slot of the terminal device, and the first moment is the moment in the downlink time slot of the terminal device corresponding to the second moment.

[0276] Optionally, the time length by which the second moment is advanced relative to the first moment is a timing advance TA length.

[0277] Optionally, the second moment is the transmission end moment when the terminal device sends the first HARQ-ACK feedback information corresponding to the first PDSCH to the network device;

[0278] The first moment is determined based on the second moment and the first duration.

[0279] Optionally, the second moment is a moment in an uplink time slot of the terminal device, and / or the first moment is a moment in an uplink time slot of the terminal device.

[0280] Optionally, the first duration is determined according to first information, and the first information includes at least one of the following:

[0281] TA length, offset parameter and round-trip transmission delay RTT;

[0282] The offset parameter is the time slot offset of the uplink time slot of the terminal device relative to the downlink time slot of the terminal device, or the offset parameter is the offset value of the uplink transmission timing of the terminal device.

[0283] Optionally, the first information is preset, or the first information is determined according to first indication information of the network device.

[0284] Optionally, the first duration is preset, or the first duration is determined according to second indication information of the network device.

[0285] Optionally, the second moment is the moment when the terminal device ends transmission of the first PDSCH;

[0286] The second moment is the moment in the downlink time slot of the terminal device, and the first moment is determined based on the second moment and the second duration.

[0287] Optionally, the first moment is a moment in a downlink time slot of the terminal device, and the second duration is determined based on HARQ feedback timing information.

[0288] Optionally, the HARQ feedback timing information is determined according to the K1 value and / or the offset parameter;

[0289] The offset parameter is the time slot offset of the uplink time slot of the terminal device relative to the downlink time slot of the terminal device, or the offset parameter is the offset value of the uplink transmission timing of the terminal device.

[0290] Optionally, the first HARQ-ACK feedback information includes:

[0291] Positive acknowledgement ACK, or negative acknowledgement NACK.

[0292] Optionally, the first PDSCH includes a scheduled PDSCH;

[0293] and / or,

[0294] The first PDSCH includes a semi-persistent scheduling SPS PDSCH.

[0295] Optionally, the terminal device is a terminal device in a non-terrestrial communication network NTN system.

[0296] Corresponding to the method of at least one embodiment applied to a network device, the embodiment of the present application also provides one or more network devices. The network device of the embodiment of the present application can implement any one of the implementation modes of the above method. Fig. 9 As shown, an embodiment of the present invention provides a network device, including:

[0297] The processing module 901 is configured to, when scheduling a first hybrid automatic repeat request HARQ process to transmit a first PDSCH to a terminal device, the network device no longer schedules the first HARQ process to transmit a second PDSCH to the terminal device before a first moment;

[0298] The first moment is the transmission end moment when the network device receives the first HARQ-ACK feedback information corresponding to the first PDSCH sent by the terminal device, or the first moment is determined according to the second moment, and the second moment is the transmission end moment when the network device sends the first PDSCH.

[0299] Optionally, the first moment is a moment in an uplink timeslot of the network device.

[0300] Optionally, the first moment is determined according to a second moment, and the second moment is a transmission end moment at which the network device sends the first PDSCH;

[0301] The second moment is a moment in a downlink time slot of the network device, and the first moment is determined based on the second moment and the second duration.

[0302] Optionally, the second duration is determined based on HARQ feedback timing information.

[0303] Optionally, the HARQ feedback timing information is determined according to the K1 value and / or the offset parameter;

[0304] Among them, the offset parameter is the offset value of the uplink transmission timing of the terminal device.

[0305] Optionally, the first HARQ-ACK feedback information includes:

[0306] Positive acknowledgement ACK, or negative acknowledgement NACK.

[0307] Optionally, the first PDSCH includes a scheduled PDSCH;

[0308] and / or,

[0309] The first PDSCH includes a semi-persistent scheduling SPS PDSCH.

[0310] Optionally, the network device is a network device in an NTN system.

[0311] An embodiment of the present invention further provides a network device, comprising: a memory storing executable program code;

[0312] a processor coupled to the memory;

[0313] The processor calls the executable program code stored in the memory to execute the method for transmitting clock information executed by the network device in the embodiment of the present invention.

[0314] like Fig.10 As shown, the network device in the embodiment of the present invention may be a communication satellite, which may include: a processor 901, which is capable of implementing each process implemented by the network device in the above method embodiment and achieving the same technical effect, which will not be repeated here.

[0315] An embodiment of the present invention further provides a terminal device, comprising: a memory storing executable program code;

[0316] a processor coupled to the memory;

[0317] The processor calls the executable program code stored in the memory to execute the method for transmitting clock information executed by the network device in the embodiment of the present invention.

[0318] Exemplarily, the terminal device in the embodiment of the present invention may be a mobile phone, such as Fig.11 As shown, the mobile phone may include: a radio frequency (RF) circuit 1110, a memory 1120, an input unit 1130, a display unit 1140, a sensor 1150, an audio circuit 1160, a wireless fidelity (WiFi) module 1170, a processor 1180, and a power supply 1190. Among them, the RF circuit 1110 includes a receiver 1111 and a transmitter 1112. Those skilled in the art will understand that Fig.11 The mobile phone structure shown in the figure does not constitute a limitation on the mobile phone, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0319] The RF circuit 1110 can be used for receiving and sending signals during the process of sending and receiving information or making calls. In particular, after receiving the downlink information of the base station, it is sent to the processor 1180 for processing; in addition, the designed uplink data is sent to the base station. Generally, the RF circuit 1110 includes but is not limited to an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier (LNA), a duplexer, etc. In addition, the RF circuit 1110 can also communicate with the network and other devices through wireless communication. The above-mentioned wireless communication can use any communication standard or protocol, including but not limited to the global system of mobile communication (GSM), general packet radio service (GPRS), code division multiple access (CDMA), wideband code division multiple access (WCDMA), long term evolution (LTE), email, short messaging service (SMS), etc.

[0320] The memory 1120 can be used to store software programs and modules. The processor 1180 executes various functional applications and data processing of the mobile phone by running the software programs and modules stored in the memory 1120. The memory 1120 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data created according to the use of the mobile phone (such as audio data, a phone book, etc.), etc. In addition, the memory 1120 can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0321] The input unit 1130 can be used to receive input digital or character information, and to generate key signal input related to the user settings and function control of the mobile phone. Specifically, the input unit 1130 may include a touch panel 1131 and other input devices 1132. The touch panel 1131, also known as a touch screen, can collect the user's touch operation on or near it (such as the user's operation on the touch panel 1131 or near the touch panel 1131 using any suitable object or accessory such as a finger, stylus, etc.), and drive the corresponding connection device according to a pre-set program. Optionally, the touch panel 1131 may include two parts: a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into the touch point coordinates, and then sends it to the processor 1180, and can receive and execute the command sent by the processor 1180. In addition, the touch panel 1131 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves. In addition to the touch panel 1131, the input unit 1130 may also include other input devices 1132. Specifically, other input devices 1132 may include but are not limited to one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, etc.

[0322] The display unit 1140 can be used to display information input by the user or information provided to the user and various menus of the mobile phone. The display unit 1140 may include a display panel 1141. Optionally, the display panel 1141 may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), etc. Further, the touch panel 1131 may cover the display panel 1141. When the touch panel 1131 detects a touch operation on or near it, it is transmitted to the processor 1180 to determine the type of touch event. Subsequently, the processor 1180 provides a corresponding visual output on the display panel 1141 according to the type of touch event. Although in Fig.11 In the embodiment, the touch panel 1131 and the display panel 1141 are used as two independent components to realize the input and output functions of the mobile phone, but in some embodiments, the touch panel 1131 and the display panel 1141 can be integrated to realize the input and output functions of the mobile phone.

[0323] The mobile phone may also include at least one sensor 1150, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display panel 1141 according to the brightness of the ambient light, and the proximity sensor may turn off the display panel 1141 and / or the backlight when the mobile phone is moved to the ear. As a type of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in all directions (generally three axes), and can detect the magnitude and direction of gravity when stationary. It can be used for applications that identify the posture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc.; as for other sensors that can be configured in the mobile phone, such as gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., they will not be repeated here.

[0324] The audio circuit 1160, the speaker 1161, and the microphone 1162 can provide an audio interface between the user and the mobile phone. The audio circuit 1160 can transmit the received audio data to the speaker 1161 after converting the received audio data into an electrical signal, which is converted into a sound signal for output; on the other hand, the microphone 1162 converts the collected sound signal into an electrical signal, which is received by the audio circuit 1160 and converted into audio data, and then the audio data is output to the processor 1180 for processing, and then sent to another mobile phone through the RF circuit 1110, or the audio data is output to the memory 1120 for further processing.

[0325] WiFi is a short-range wireless transmission technology. The mobile phone can help users send and receive emails, browse web pages and access streaming media through the WiFi module 1170. It provides users with wireless broadband Internet access. Fig.11 A WiFi module 1170 is shown, but it is understandable that it is not an essential component of the mobile phone and can be omitted as needed without changing the essence of the invention.

[0326] The processor 1180 is the control center of the mobile phone. It uses various interfaces and lines to connect various parts of the entire mobile phone. By running or executing software programs and / or modules stored in the memory 1120, and calling data stored in the memory 1120, it executes various functions of the mobile phone and processes data, thereby monitoring the mobile phone as a whole. Optionally, the processor 1180 may include one or more processing units; preferably, the processor 1180 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs, and the modem processor mainly processes wireless communications. It is understandable that the above-mentioned modem processor may not be integrated into the processor 1180.

[0327] The mobile phone also includes a power supply 1190 (such as a battery) for supplying power to various components. Preferably, the power supply can be logically connected to the processor 1180 through a power management system, so that the power management system can manage charging, discharging, and power consumption management. Although not shown, the mobile phone can also include a camera, a Bluetooth module, etc., which will not be repeated here.

[0328] In an embodiment of the present invention, the processor 1180 can also implement the various processes implemented by the terminal device in the above method embodiment and achieve the same technical effect, which will not be repeated here.

[0329] The embodiment of the present invention further provides a computer-readable storage medium, including: computer instructions, which, when executed on a computer, enable the computer to execute various processes of the terminal device in the above method embodiment.

[0330] The embodiment of the present invention further provides a computer-readable storage medium, including: computer instructions, which, when executed on a computer, enable the computer to execute various processes of the network device in the above method embodiment.

[0331] An embodiment of the present invention further provides a computer program product, including computer instructions. When the computer program product runs on a computer, the computer runs the computer instructions, so that the computer executes each process of the terminal device in the above method embodiment.

[0332] An embodiment of the present invention further provides a computer program product, including computer instructions. When the computer program product runs on a computer, the computer runs the computer instructions, so that the computer executes each process of the network device in the above method embodiment.

[0333] An embodiment of the present invention also provides a chip, which is coupled to a memory in a terminal device, so that the chip calls program instructions stored in the memory during operation, so that the terminal device executes various processes of the terminal device in the above method embodiment.

[0334] An embodiment of the present invention further provides a chip, which is coupled to a memory in a network device, so that the chip calls program instructions stored in the memory during operation, so that the network device executes various processes of the network device in the above method embodiment.

[0335] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, 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 according to the embodiment of the present invention 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 site, a computer, a server or a data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can store or a data storage device such as a server or a data center that includes one or more available media integrated. 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 hard disk Solid State Disk (SSD)), etc.

[0336] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

Claims

1. A wireless communication method, characterized in that: include: In the case where the terminal device receives the first physical downlink shared channel PDSCH scheduled by the network device for transmission of the first hybrid automatic repeat request HARQ process, the terminal device does not expect to receive the second PDSCH scheduled by the network device for transmission of the first HARQ process again before the first moment; The first moment is determined according to the second moment, and the second moment is the transmission end moment when the terminal device sends the first hybrid automatic repeat request response HARQ-ACK feedback information corresponding to the first PDSCH to the network device, or the second moment is the transmission end moment when the terminal device receives the first PDSCH.

2. The method according to claim 1, characterized in that The second moment is the moment when transmission of the first HARQ-ACK feedback information corresponding to the first PDSCH sent by the terminal device to the network device ends; The first moment is determined according to the second moment and the first duration.

3. The method according to claim 2, characterized in that The second moment is a moment in an uplink timeslot of the terminal device, and / or the first moment is a moment in an uplink timeslot of the terminal device.

4. The method according to claim 2 or 3, characterized in that: The first duration is determined according to first information, and the first information includes at least one of the following: Timing advance TA length, offset parameters and round-trip transmission delay RTT; The offset parameter is the time slot offset of the uplink time slot of the terminal device relative to the downlink time slot of the terminal device, or the offset parameter is the offset value of the uplink transmission timing of the terminal device.

5. The method according to claim 4, characterized in that The first information is preset, or the first information is determined according to first indication information of the network device.

6. The method according to any one of claims 2 to 5, characterized in that The first duration is preset, or the first duration is determined according to second indication information of the network device.

7. The method according to claim 1, characterized in that The second moment is the moment when the terminal device ends transmission of the first PDSCH; The second moment is a moment in a downlink time slot of the terminal device, and the first moment is determined based on the second moment and the second duration.

8. A wireless communication method, characterized in that: include: In the case where the network device schedules the first hybrid automatic repeat request HARQ process to transmit the first PDSCH to the terminal device, the network device no longer schedules the first HARQ process to transmit the second PDSCH to the terminal device before the first moment; The first moment is the transmission end moment when the network device receives the first HARQ-ACK feedback information corresponding to the first PDSCH sent by the terminal device, or the first moment is determined according to the second moment, and the second moment is the transmission end moment when the network device sends the first PDSCH.

9. The method according to claim 8, characterized in that The first moment is a moment in an uplink timeslot of the network device.

10. The method according to claim 8 or 9, characterized in that: The first moment is determined according to a second moment, where the second moment is a transmission end moment at which the network device sends the first PDSCH; The second moment is a moment in a downlink time slot of the network device, and the first moment is determined according to the second moment and a second duration.

11. A terminal device, characterized in that: include: A processing module, configured to, when a terminal device receives a first physical downlink shared channel PDSCH for transmission of a first hybrid automatic repeat request HARQ process scheduled by a network device, the terminal device does not expect to receive a second PDSCH for transmission of the first HARQ process scheduled by the network device again before a first moment; The first moment is determined according to the second moment, and the second moment is the transmission end moment when the terminal device sends the first hybrid automatic repeat request response HARQ-ACK feedback information corresponding to the first PDSCH to the network device, or the second moment is the transmission end moment when the terminal device receives the first PDSCH.

12. The terminal device according to claim 11, characterized in that: The second moment is the moment when transmission of the first HARQ-ACK feedback information corresponding to the first PDSCH sent by the terminal device to the network device ends; The first moment is determined according to the second moment and the first duration.

13. The terminal device according to claim 12, characterized in that: The second moment is a moment in an uplink timeslot of the terminal device, and / or the first moment is a moment in an uplink timeslot of the terminal device.

14. The terminal device according to claim 12 or 13, characterized in that: The first duration is determined according to first information, and the first information includes at least one of the following: Timing advance TA length, offset parameters and round-trip transmission delay RTT; The offset parameter is the time slot offset of the uplink time slot of the terminal device relative to the downlink time slot of the terminal device, or the offset parameter is the offset value of the uplink transmission timing of the terminal device.

15. The terminal device according to claim 14, characterized in that: The first information is preset, or the first information is determined according to first indication information of the network device.

16. The terminal device according to any one of claims 12 to 15, characterized in that: The first duration is preset, or the first duration is determined according to second indication information of the network device.

17. The terminal device according to claim 11, characterized in that: The second moment is the moment when the terminal device ends transmission of the first PDSCH; The second moment is a moment in a downlink time slot of the terminal device, and the first moment is determined based on the second moment and the second duration.

18. A network device, characterized in that: include: A processing module, configured to, when scheduling a first hybrid automatic repeat request HARQ process to transmit a first PDSCH to a terminal device, the network device no longer schedules the first HARQ process to transmit a second PDSCH to the terminal device before a first moment; The first moment is the transmission end moment when the network device receives the first HARQ-ACK feedback information corresponding to the first PDSCH sent by the terminal device, or the first moment is determined according to the second moment, and the second moment is the transmission end moment when the network device sends the first PDSCH.

19. The network device according to claim 18, characterized in that: The first moment is a moment in an uplink timeslot of the network device.

20. The network device according to claim 18 or 19, characterized in that: The first moment is determined according to a second moment, where the second moment is a transmission end moment at which the network device sends the first PDSCH; The second moment is a moment in a downlink time slot of the network device, and the first moment is determined according to the second moment and a second duration.

21. A terminal device, characterized in that: include: A processor, a memory, and a computer program stored in the memory and executable on the processor, wherein when the computer program is executed by the processor, the wireless communication method according to any one of claims 1 to 7 is implemented.

22. A network device, characterized in that: include: A processor, a memory, and a computer program stored in the memory and executable on the processor, wherein when the computer program is executed by the processor, the wireless communication method according to any one of claims 8 to 10 is implemented.

23. A computer-readable storage medium, comprising: A computer instruction, when the computer instruction is executed on a computer, causes the computer to execute the wireless communication method according to any one of claims 1 to 7, or execute the wireless communication method according to any one of claims 8 to 10.

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