WO2023077321A1 - Communication method and terminal device - Google Patents

Abstract

Provided are a communication method and a terminal device. The method comprises: a terminal device receiving a first physical shared channel; the terminal device determining a first feedback channel according to a first offset value and first HARQ feedback timing, wherein the first feedback channel is used for bearing feedback information which corresponds to the first physical shared channel; and the terminal device determining to send or not send the first feedback channel. In the embodiments of the present application, it is specified that after a terminal device determines a first feedback channel according to a first offset value and a first HARQ feedback timing, the terminal device may determine to send or not send the first feedback channel, such that the terminal device and a network device are consistent in the understanding of whether the terminal device sends the first feedback channel, thereby preventing disorder from occurring during a communication process.

Description

Communication method and terminal equipment technical field

The present application relates to the technical field of communication, and more specifically, to a communication method and a terminal device.

Background technique

Certain communication systems (such as non-terrestrial network (NTN) systems) have relatively large time delays. Therefore, this type of communication system usually introduces an offset value (such as K _offset ) to enhance the timing relationship in the communication system. For example, in the HARQ feedback process, the terminal device may receive the first physical shared channel, and then feed back feedback information for the first physical shared channel through the first feedback channel. At this time, the above offset value is used to indicate the time interval from the completion of receiving the first physical shared channel to sending the first feedback channel. In addition, in order to achieve uplink synchronization, the terminal device needs to adjust the time for sending the first feedback channel based on a timing advance (timing advance, TA).

However, the process of the network device configuring the TA for the terminal device and the process of configuring the offset value for the terminal device by the network device are two independent processes, and there may be cases where the TA of the terminal device does not match the offset value. It does not specify how this situation should be dealt with. If the understanding between the end device and the network device on how to deal with this situation is not consistent, the communication process will be messed up. For example, after the terminal device adjusts the sending time of the first feedback channel based on the TA, the starting position of the time domain unit for transmitting the first feedback channel is too early, causing the terminal device to have no time to complete decoding the first physical shared channel. Feedback information is sent through the first feedback channel to indicate the decoding result of the first physical shared channel. The current communication protocol does not specify how to deal with this situation. If the understanding between the end device and the network device on how to deal with this situation is not consistent, the communication process will be messed up.

Contents of the invention

The present application provides a communication method and a terminal device, so as to avoid confusion in the communication process between the terminal device and the network device.

In a first aspect, a communication method is provided, including: a terminal device receives a first physical shared channel; the terminal device determines a first feedback channel according to a first offset value and a first HARQ feedback timing, and the first feedback channel Used to carry feedback information corresponding to the first physical shared channel; the terminal device determines whether to send or not to send the first feedback channel.

In a second aspect, a communication method is provided, including: a terminal device receives first control information, and the first control information is used to schedule a first physical shared channel; The shift value determines the first physical shared channel; the terminal device determines whether to send or not to send the first physical shared channel.

In a third aspect, a communication method is provided, including: a terminal device determines a first CSI reference resource according to a first offset value and a channel state information CSI reference resource offset value; the terminal device determines a first CSI reference resource based on the first CSI reference resources, determining whether to send or not to send the first CSI associated with the first CSI reference resource.

In a fourth aspect, a terminal device is provided, including: a receiving unit, configured to receive a first physical shared channel; a processing unit, configured to determine a first feedback channel according to a first offset value and a first HARQ feedback timing, and the first A feedback channel is used to carry feedback information corresponding to the first physical shared channel; the processing unit is further configured to determine whether to send or not to send the first feedback channel.

According to a fifth aspect, a terminal device is provided, including: a receiving unit, configured to receive first control information, where the first control information is used to schedule a first physical shared channel; The time slot offset value determines the first physical shared channel; the processing unit is further configured to determine whether to send or not to send the first physical shared channel.

In a sixth aspect, a terminal device is provided, including: a processing unit configured to determine a first CSI reference resource according to a first offset value and a channel state information CSI reference resource offset value; the processing unit is also configured to determine a first CSI reference resource based on The first CSI reference resource determines whether to send or not to send the first CSI associated with the first CSI reference resource.

In a seventh aspect, a terminal is provided, including a processor, a memory, and a communication interface, the memory is used to store one or more computer programs, and the processor is used to call the computer programs in the memory to make the terminal device execute Some or all of the steps in the method of the first aspect.

In an eighth aspect, an embodiment of the present application provides a communication system, where the system includes the above-mentioned terminal and/or network device. In another possible design, the system may further include other devices that interact with the terminal or network device in the solutions provided by the embodiments of the present application.

In a ninth aspect, the embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and the computer program causes a terminal to execute part or all of the steps in the above method.

In a tenth aspect, the embodiment of the present application provides a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause the terminal to execute the above method Some or all of the steps in . In some implementations, the computer program product can be a software installation package.

In an eleventh aspect, the embodiment of the present application provides a chip, the chip includes a memory and a processor, and the processor can call and run a computer program from the memory to implement some or all of the steps described in the above method.

In the embodiment of the present application, it is clarified that after the terminal device determines the first feedback channel according to the first offset value and the first HARQ feedback timing, the terminal device can determine whether to send or not to send the first feedback channel, so that the terminal device and The network device has a consistent understanding of whether the terminal device sends the first feedback channel, thereby avoiding confusion in the communication process.

Description of drawings

1A-1C are exemplary diagrams of a communication system to which the embodiments of the present application can be applied.

FIG. 2 is a schematic diagram of timing processing in the HARQ feedback process.

Fig. 3 is a schematic diagram of timing processing in the uplink data scheduling process.

FIG. 4 is a schematic diagram of timing processing in the CSI reporting process.

FIG. 5 is a flowchart of a communication method according to an embodiment of the present application.

Fig. 6 is a schematic diagram of a communication method according to an embodiment of the present application in a downlink transmission scenario.

Fig. 7 is a flowchart of a communication method according to another embodiment of the present application.

FIG. 8 is a schematic diagram of a communication method according to an embodiment of the present application during uplink data transmission.

Fig. 9 is a flowchart of a communication method according to another embodiment of the present application.

Fig. 10 is a schematic diagram of the communication method according to the embodiment of the present application during the process of sending the first CSI.

FIG. 11 is a schematic diagram of a terminal device according to an embodiment of the present application.

Fig. 12 is a schematic diagram of a terminal device according to another embodiment of the present application.

Fig. 13 is a schematic diagram of a terminal device according to another embodiment of the present application.

Fig. 14 is a schematic structural diagram of a communication device according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. With regard to the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

The technical solution of the embodiment of the present application can be applied to various communication systems, such as: global system of mobile communication (global system of mobile communication, GSM) system, code division multiple access (code division multiple access, CDMA) system, broadband code division multiple access (wideband code division multiple access, WCDMA) system, general packet radio service (GPRS), long term evolution (long term evolution, LTE) system, advanced long term evolution (advanced long term evolution, LTE-A) system , new radio (new radio, NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum) on unlicensed spectrum unlicensed spectrum (NR-U) system, NTN system, universal mobile telecommunications system (UMTS), wireless local area network (wireless local area networks, WLAN), wireless fidelity (wireless fidelity, WiFi), fifth generation communication (5th-generation, 5G) system or other communication systems, such as future communication systems, such as the sixth-generation mobile communication system, and satellite communication systems.

Generally speaking, the number of connections supported by traditional communication systems is limited and easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication, but also support, for example, device to device (device to device, D2D) communication, machine to machine (M2M) communication, machine type communication (MTC), vehicle to vehicle (V2V) communication, or vehicle to everything (V2X) communication, etc. , the embodiments of the present application may also be applied to these communication systems.

The communication system in the embodiment of the present application may be applied to a carrier aggregation (carrier aggregation, CA) scenario, may also be applied to a dual connectivity (dual connectivity, DC) scenario, and may also be applied to an independent (standalone, SA) network deployment scenario.

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 a licensed spectrum, wherein the licensed spectrum can also be Considered a dedicated spectrum.

The embodiments of the present application may be applied to an NTN system, and may also be applied to a terrestrial communication network (terrestrial networks, TN) system. By way of example and not limitation, the NTN system includes an NR-based NTN system and an IoT-based NTN system.

Embodiments of the present application describe various embodiments in conjunction with network equipment and terminal equipment, wherein the terminal equipment may also be called user equipment (user equipment, UE), access terminal, user unit, user station, mobile station, mobile station (mobile station, MS), mobile terminal (mobile Terminal, MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

In the embodiment of the present application, the terminal device may be a station (STATION, ST) in the WLAN, and may be a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) stations, personal digital assistant (PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, next-generation communication systems such as NR networks The terminal equipment in the network, or the terminal equipment in the public land mobile network (public land mobile network, PLMN) network that will evolve in the future, etc.

In this embodiment of the application, a terminal device can be a device that provides voice and/or data connectivity to users, and can be used to connect people, things and machines, such as handheld devices with wireless connection functions, vehicle-mounted devices, and the like. The terminal device in the embodiment of the present application can be mobile phone (mobile phone), tablet computer (Pad), notebook computer, palmtop computer, mobile internet device (mobile internet device, MID), wearable device, virtual reality (virtual reality, VR) equipment, augmented reality (augmented reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical surgery, smart Wireless terminals in smart grid, wireless terminals in transportation safety, wireless terminals in smart city, wireless terminals in smart home, etc. Optionally, UE can be used to act as a base station. For example, a UE may act as a scheduling entity that provides sidelink signals between UEs in V2X or D2D, etc. For example, a cell phone and an automobile communicate with each other using sidelink signals. Communication between cellular phones and smart home devices without relaying communication signals through base stations.

In the embodiment of this application, the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as aircraft, balloons and satellites) superior).

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

As an example but not a limitation, in this embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices, which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, 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 clothing or accessories. Wearable devices are not only a hardware device, but also achieve powerful functions through software support, data interaction, and cloud interaction. Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets and smart jewelry for physical sign monitoring.

The network device in this embodiment of the present application may be a device for communicating with a terminal device, and the network device may also be called an access network device or a wireless access network device, for example, the network device may be a base station. The network device in this embodiment of the present application may refer to a radio access network (radio access network, RAN) node (or device) that connects a terminal device to a wireless network. The base station can broadly cover various names in the following, or replace with the following names, such as: Node B (NodeB), evolved base station (evolved NodeB, eNB), next generation base station (next generation NodeB, gNB), relay station, Access point, transmission point (transmitting and receiving point, TRP), transmission point (transmitting point, TP), primary station MeNB, secondary station SeNB, multi-standard wireless (MSR) node, home base station, network controller, access node , wireless node, access point (access piont, AP), transmission node, transceiver node, base band unit (base band unit, BBU), remote radio unit (remote radio unit, RRU), active antenna unit (active antenna unit) , AAU), radio head (remote radio head, RRH), central unit (central unit, CU), distributed unit (distributed unit, DU), positioning nodes, etc. A base station may be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof. A base station may also refer to a communication module, a modem or a chip configured in the aforementioned equipment or device. The base station can also be a mobile switching center, a device that undertakes the function of a base station in D2D, vehicle-to-everything (V2X), machine-to-machine (M2M) communication, and a device in a 6G network. Network-side equipment, equipment that assumes base station functions in future communication systems, etc. Base stations can support networks of the same or different access technologies. The embodiment of the present application does not limit the specific technology and specific device form adopted by the network device.

Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move according to the location of the mobile base station. In other examples, a helicopter or drone may be configured to serve as a device in communication with another base station.

In some deployments, the network device in this embodiment of the present application may refer to a CU or a DU, or, the network device includes a CU and a DU. A gNB may also include an AAU.

Network equipment and terminal equipment can be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; they can also be deployed on water; they can also be deployed on aircraft, balloons and satellites in the air. In the embodiment of the present application, the scenarios where the network device and the terminal device are located are not limited.

As an example but not a limitation, in this embodiment of the present application, the network device may have a mobile feature, for example, the network device may be a mobile device. In some embodiments of the present application, the network device may be a satellite or a balloon station. For example, the satellite can be a low earth orbit (low earth orbit, LEO) satellite, a medium earth orbit (medium earth orbit, MEO) satellite, a geosynchronous earth orbit (geosynchronous earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite. ) Satellite etc. In some embodiments of the present application, the network device may also be a base station installed on land, in water, and other locations.

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

Exemplarily, FIG. 1A is a schematic structural diagram of a communication system provided by an embodiment of the present application. As shown in FIG. 1A , a communication system 100 may include a network device 110, and the network device 110 may be a device for communicating with a terminal device 120 (or called a communication terminal, terminal). The network device 110 can provide communication coverage for a specific geographical area, and can communicate with terminal devices located in the coverage area.

FIG. 1A exemplarily shows one network device and two terminal devices. In some embodiments of the present application, the communication system 100 may include multiple network devices and each network device may include other numbers of terminals within the coverage area. The device is not limited in the embodiment of this application.

Exemplarily, FIG. 1B is a schematic structural diagram of another communication system provided by an embodiment of the present application. Referring to FIG. 1B , a terminal device 1101 and a satellite 1102 are included, and wireless communication can be performed between the terminal device 1101 and the satellite 1102 . The network formed between the terminal device 1101 and the satellite 1102 may also be referred to as NTN. In the architecture of the communication system shown in FIG. 1B , the satellite 1102 may function as a base station, and the terminal device 1101 and the satellite 1102 may communicate directly. Under the system architecture, the satellite 1102 can be referred to as a network device. In some embodiments of the present application, the communication system may include multiple network devices 1102, and the coverage of each network device 1102 may include other numbers of terminal devices, which is not limited in this embodiment of the present application.

Exemplarily, FIG. 1C is a schematic structural diagram of another communication system provided by an embodiment of the present application. Referring to FIG. 1C , it includes a terminal device 1201 , a satellite 1202 and a base station 1203 , wireless communication can be performed between the terminal device 1201 and the satellite 1202 , and communication can be performed between the satellite 1202 and the base station 1203 . The network formed among the terminal equipment 1201, the satellite 1202 and the base station 1203 may also be referred to as NTN. In the architecture of the communication system shown in FIG. 1C , 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 relayed through the satellite 1202 . Under this system architecture, the base station 1203 may be called a network device. In some embodiments of the present application, the communication system may include multiple network devices 1203, and the coverage of each network device 1203 may include other numbers of terminal devices, which is not limited in this embodiment of the present application.

It should be noted that Fig. 1A-Fig. 1C are only illustrations of the systems to which this application is applicable. Of course, the methods shown in the embodiments of this application can also be applied to other systems, for example, 5G communication systems, LTE communication systems, etc. , which is not specifically limited in this embodiment of the present application.

In some embodiments of the present application, the wireless communication system shown in FIG. 1A-FIG. 1C may further include a mobility management entity (mobility management entity, MME), an access and mobility management function (access and mobility management function, AMF) and other network entities, which are not limited in this embodiment of the present application.

It should be understood that a device with a communication function in the network/system in the embodiment of the present application may be referred to as a communication device. Taking the communication system 100 shown in FIG. 1A as an example, the communication equipment may include a network equipment 110 and a terminal equipment 120 with communication functions, and the network equipment 110 and the terminal equipment 120 may be the specific equipment described above, which will not be repeated here. The communication device may also include other devices in the communication system 100, such as network controllers, mobility management entities and other network entities, which are not limited in this embodiment of the present application.

It should be understood that the "indication" mentioned in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is 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 indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.

In the description of the embodiments of the present application, the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or that there is an association between the two, or that it indicates and is indicated, configuration and is configuration etc.

The "configuration" in the embodiment of the present application may include configuring through at least one of system messages, radio resource control (radio resource control, RRC) signaling, and media access control element (MAC CE) .

In some embodiments of the present application, "predefined" or "preset" may be pre-saved in devices (for example, including terminal devices and network devices) with corresponding codes, tables or other methods that can be used to indicate related information implementation, and the present application does not limit the specific implementation manner. For example, the predefined ones may refer to those defined in the protocol.

In some embodiments of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, it may include the LTE protocol, the NR protocol, and related protocols applied to future communication systems, which are not limited in the present application.

For ease of understanding, some relevant technical knowledge involved in the embodiments of the present application is introduced first. The following related technologies may be optionally combined with the technical solutions of the embodiments of the present application as optional solutions, and all of them belong to the protection scope of the embodiments of the present application. The embodiment of the present application includes at least part of the following content.

NTN

Currently, the 3rd generation partnership project (3rd generation partnership project, 3GPP) is researching NTN technology. NTN generally adopts satellite communication to provide communication services to ground users. Compared with terrestrial cellular network communication, satellite communication has many unique advantages.

First of all, satellite communication is not restricted by user's geography. For example, general ground communication networks cannot cover areas where network equipment cannot be set up, such as oceans, mountains, and deserts. Alternatively, terrestrial communication networks do not cover certain sparsely populated areas. As for satellite communication, since a satellite can cover a large ground area, and the satellite can orbit around the earth, theoretically speaking, every corner of the earth can be covered by a satellite communication network.

Secondly, satellite communication has great social value. Satellite communication can cover remote mountainous areas, poor and backward countries or regions at a lower cost, so that people in these regions can enjoy advanced voice communication and mobile Internet technologies. From this point of view, satellite communication is conducive to narrowing the digital gap with developed regions and promoting the development of these regions.

Thirdly, satellite communication has the advantage of long distance, and the increase of communication distance does not significantly increase the cost of communication.

Finally, satellite communication has high stability and is not affected by natural disasters.

Communication satellites are divided into low earth orbit (LEO) satellites, medium earth orbit (MEO) satellites, geostationary earth orbit (GEO) satellites, high elliptical orbit (high elliptical orbit, HEO) satellite, etc. At present, the main researches are LEO satellites and GEO satellites.

The height range of LEO satellites is generally between 500km and 1500km. Correspondingly, the orbit period of the LEO satellite is about 1.5 hours to 2 hours. For LEO satellites, the signal propagation delay of single-hop communication between users is generally less than 20ms. The maximum satellite visibility time of LEO satellites is about 20 minutes. LEO satellites have the advantages of short signal propagation distance, less link loss, and low requirements on the transmission power of user terminal equipment.

The orbit height of GEO satellite is 35786km. GEO satellites orbit the Earth every 24 hours. For GEO satellites, the signal propagation delay of single-hop communication between users is generally about 250ms.

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

Currently, the NTN system includes the NR-NTN system and the Internet of things (IoT)-NTN system.

Timing advance (TA)

In order to ensure the orthogonality of uplink transmission and avoid intra-cell (intra-cell) interference, the network device can require that the signals from different terminal devices of the same subframe but different frequency domain resources (different RBs) arrive at the network device basically is aligned. As long as the network device receives the uplink data sent by the terminal device within the range of the cyclic prefix (CP), it can correctly decode the uplink data. Therefore, uplink synchronization requires signals from different terminal devices in the same subframe to reach the network device The time falls within the CP.

In order to ensure time synchronization on the receiving side (network device side), a mechanism of Uplink Timing Advance (Uplink Timing Advance) is proposed, that is, by configuring TA for each terminal device to adjust the time for the terminal device to send an uplink signal in the same subframe, So that the network device can receive uplink data sent by different terminal devices in the same subframe within the time range corresponding to the CP.

Usually, for a terminal device that is far away from the network device, due to the long distance between the network device and the terminal device, the time delay required for signal transmission between the network device and the terminal device is relatively large. Therefore, for the terminal device The TA configured on the device is relatively large. Conversely, for a terminal device that is closer to the network device, since the distance between the network device and the terminal device is relatively short, the time delay required for signal transmission between the network device and the terminal device is relatively small. The TA of the device configuration is small.

Timing relationship of NR system

In the NR system, there are many communication processes with time series relationship. In the following, the three communication processes of hybrid automatic repeat reQuest (HARQ) feedback process, uplink data scheduling process, and channel state information (CSI) reporting process are taken as examples to introduce the timing relationship in the NR system.

Communication process 1. HARQ feedback process.

Usually, after the receiving end receives the data sent by the sending end through the first physical shared channel, the receiving end needs to send feedback information to the sending end through the first feedback channel to indicate whether the data in the first physical shared channel is received correctly, wherein , the feedback information may be, for example, an acknowledgment (acknowledgment, ACK) or a negative acknowledgment (negative acknowledgment, NACK). This process may be called HARQ feedback (or HARQ-ACK feedback). ACK and/or NACK may be collectively referred to as HARQ-ACK information (or feedback information, such as feedback bits). A time interval from receiving the physical shared channel at the receiving end to sending feedback information corresponding to the physical shared channel to the sending end may be referred to as a HARQ feedback timing.

In the scenario of sidelink communication, both the receiving end and the sending end may be terminal devices, and the first physical shared channel may be PSSCH, and the first feedback channel may be PSFCH. In the communication scenario of downlink transmission, the receiving end may be a terminal device, the sending end may be a network device, and the first physical shared channel may be a first physical downlink shared channel (PDSCH), and the first feedback The channel is a physical uplink control channel (physical uplink control channel, PUCCH).

In the following, the communication scenario of downlink transmission is taken as an example to introduce the timing relationship in the HARQ feedback process.

For a terminal device with downlink services, the network device may schedule the transmission of the first PDSCH for the terminal device through the first DCI (or called downlink grant DCI). The first DCI may include indication information of the first PUCCH resource. After receiving the first PDSCH, the terminal device may feed back the decoding result of the first PDSCH as feedback information to the network device through the first PUCCH resource. The time interval from receiving the PDSCH to sending the HARQ-ACK information corresponding to the PDSCH to the network device by the terminal device may be referred to as a HARQ feedback timing.

Certain communication systems (such as NR systems) support dynamic determination of HARQ feedback timing. For example, the network device can schedule the terminal device to receive the PDSCH through the DCI. The DCI may include indication information of the PUCCH resource used to transmit the HARQ-ACK information corresponding to the PDSCH.

The PUCCH resource indication information may include a PUCCH resource indication (PUCCH resource indicator) and a HARQ feedback timing indication (PDSCH-to-HARQ_feedback timing indicator).

The PUCCH resource indication can be used to determine the PUCCH resource for transmitting the HARQ-ACK information corresponding to the PDSCH, such as determining the frequency domain and/or code domain position of the PUCCH resource. The HARQ feedback timing indication information can be used to dynamically determine the time domain position of the HARQ feedback resources (eg PUCCH resources). The feedback time domain unit (or time domain position) where the HARQ feedback resource is located, the feedback time domain unit may be, for example, the time slot where the HARQ feedback resource is located. The HARQ feedback resource indication information is usually represented by the HARQ feedback sequence K ₁ . The HARQ feedback sequence K ₁ may indicate the time slot offset value between the PDSCH and the PUCCH carrying the HARQ-ACK information corresponding to the PDSCH.

Correspondingly, the terminal device can determine the time domain resource of the PUCCH carrying the HARQ-ACK information corresponding to the PDSCH according to the HARQ feedback sequence K ₁ and the PUCCH time domain resource.

For example, if the end position of PDSCH reception (or the last time domain unit in the time domain resource for transmitting PDSCH) is time domain unit n _PDSCH , the terminal device should be on the PUCCH resource corresponding to time domain unit n _PDSCH + K ₁ The HARQ-ACK information corresponding to the PDSCH is transmitted. It should be noted that when K ₁ =0, the last time domain unit of PUCCH transmission overlaps with the end position of PDSCH reception.

For another example, if the end position of PDCCH reception indicating SPS PDSCH release (or the last time domain resource in the time domain resources for transmitting PDSCH) is time domain unit n _PDSCH , then the terminal device should be in time domain unit n _PDSCH +K The HARQ-ACK information corresponding to the PDSCH is transmitted on the PUCCH resource within ₁ . It should be noted that when K ₁ =0, the last time domain unit for transmitting the PUCCH overlaps with the end position of receiving the PDCCH indicating the release of the SPS PDSCH.

It should be noted that the above time domain unit may be any transmission unit in the time domain, for example, the time domain unit may be a time slot. For another example, the time domain unit may be a time domain symbol (also called "symbol").

Communication process 2. Data scheduling process.

Generally, for a terminal device to transmit data, the terminal device receives first control information for scheduling transmission resources for the data to be transmitted, and sends data through the transmission resources indicated by the first control information. In the above data scheduling process, the time interval between the end of receiving the first control information and the start of sending data by the terminal device may be referred to as a time sequence in the data scheduling process.

It should be noted that the above data scheduling process may be applied to a sidelink communication scenario or an uplink data scheduling scenario. For ease of understanding, in the following description of the data scheduling process, the uplink data scheduling scenario will be used as an example to introduce the sequence in the data scheduling process. The timing in the data scheduling process in the sidelink communication scenario is similar to the timing in the uplink data scheduling scenario, and will not be described in detail for brevity.

For a terminal device with uplink services, the network device can schedule the transmission of the first physical uplink shared channel (PUSCH) for the terminal device through the first DCI (or called uplink authorization DCI), so that the terminal device can pass the first physical uplink shared channel (PUSCH) A PUSCH sends uplink data.

In some implementations, in order to control the time interval between the time domain unit occupied by the first PDCCH carrying the first DCI and the time domain unit occupied by the first PUSCH, a time slot offset value K ₂ may be configured for the terminal device, where The time slot offset value _K2 is used to indicate the time interval from when the terminal device receives the first PDCCH to when the terminal device sends the first PUSCH to the network device.

For example, when the terminal device receives the first PDCCH on time domain unit n _DCI (or in other words, the last time domain unit for transmitting the first PDCCH is time domain unit n _DCI ), then the time domain of the first PUSCH scheduled by the first DCI The starting position of the unit (or the earliest time-domain unit) is the time-domain unit n _DCI +K ₂ .

Correspondingly, the terminal device can determine the time domain resource of the PUSCH carrying uplink data according to the time slot offset value K ₂ and the starting position and length of the PUSCH time domain resource scheduled by the DCI. Wherein, the starting position of the time domain unit occupied by the PUSCH scheduled by the DCI and the length of the time domain unit may be indicated by time domain resource assignment (time domain resource assignment, TDRA).

In some implementation manners, the above-mentioned time slot offset value K ₂ may be indicated by DCI. In some other implementation manners, the value range of the above K ₂ may be 0 to 32.

It should be noted that the above time domain unit may be any transmission unit in the time domain, for example, the time domain unit may be a time slot. For another example, the time domain unit may be a time domain symbol (also called "symbol").

Communication process 3. CSI reporting process.

CSI reporting is related to CSI reference resources. That is to say, each CSI reporting moment corresponds to a CSI reference resource. In some implementation manners, the above CSI reference resource is used to calculate a channel quality indication (channel quality indication, CQI) corresponding to the CSI report. In some other implementation manners, the above CSI reference resource is used to determine a measurement resource corresponding to CSI reporting. Therefore, it can be seen from the above functions of the CSI reference resources that the CSI reference resources need to correspond to downlink time domain units (eg, downlink time slots or downlink symbols).

In some implementations, assuming that the terminal device needs to report CSI to the network device on the uplink time domain unit n', the CSI reference resource can be determined based on the formula nn _CSI-ref , where n represents the downlink corresponding to the uplink time domain unit n' Time domain unit, n _CSI-ref is a positive integer.

确定，或者，上述上行时域单元n′与下行时域单元n之间的对应关系还可以通过公式

确定，其中，μ _DL表示下行的子载波间隔，μ _UL表示上行的子载波间隔。 In other implementations, when the above time domain unit is a time slot, the corresponding relationship between the uplink time domain unit n' and the downlink time domain unit n can be obtained by the formula

Determine, or, the corresponding relationship between the above-mentioned uplink time-domain unit n' and downlink time-domain unit n can also be determined by the formula

Determine, where μ _DL represents the downlink subcarrier spacing, and μ _UL denotes the uplink subcarrier spacing.

以及

可以通过高层配置参数CA时隙偏移值(ca-SlotOffset)确定。 It should be noted that the above parameters

as well as

It can be determined through the high layer configuration parameter CA slot offset (ca-SlotOffset).

Timing Processing of NR System

Based on the above introduction, in a communication system (for example, NR system), many communication processes have a timing relationship. Therefore, in order to standardize the behavior of terminal equipment, the current communication protocol stipulates that when the timing relationship is satisfied, the terminal equipment , as well as the behavior of the end device if the timing relationship is not satisfied. The foregoing behavior of the terminal device when the timing relationship is satisfied or not satisfied may be referred to as "sequence processing".

For ease of understanding, the following describes the behavior of the terminal device by taking the HARQ feedback process, the uplink data scheduling process, and the CSI reporting process as examples in combination with FIG. 2 to FIG. 4 .

Communication process 1, HARQ feedback process.

As introduced above, in order to achieve uplink synchronization, the timing for the terminal device to send an uplink signal needs to be adjusted based on the TA. Moreover, the process of the network device configuring TA for the terminal device and the network device configuring the HARQ feedback timing _K1 for the terminal device are two independent processes. Therefore, there may be a situation where the TA of the terminal device does not match the HARQ feedback timing _K1 , resulting in Before the PDSCH decoding time of the terminal device is over, it is time to send the HARQ-ACK information adjusted based on the TA, or in other words, it is time to send the HARQ-ACK information before the terminal device completes the PDSCH decoding in time.

Therefore, in order to standardize the behavior of the terminal equipment in the above situation, the first symbol L ₁ is introduced into the existing communication protocol, and based on the difference between the starting position of the first symbol L ₁ and the starting position of the time domain unit of the PUCCH The time relationship between them is used to judge whether the time domain unit of the PUCCH satisfies the time sequence relationship in the HARQ feedback process. Wherein, the above-mentioned first symbol L ₁ may be defined as: the next uplink symbol after the start position of the CP is later than the first processing time length after the end position of the last symbol reception of the PDSCH.

计算，其中，N ₁表示PDSCH译码时间，d _1,1的取值和PDSCH的映射类型有关，d ₂的取值和PUCCH的优先级有关，T _ext表示CP延长的长度，T _C＝1/(Δf _max·N _f)，Δf _max＝480·10 ³赫兹，N _f＝4096，μ表示子载波间隔配置。 In some implementation manners, the first processing time length T _proc,1 is determined based on the PDSCH decoding time of the terminal device. For example, the relationship between the first processing time length T _proc,1 and the PDSCH decoding time can be obtained by the formula

Calculate, wherein, N ₁ represents the PDSCH decoding time, the value of d _1,1 is related to the mapping type of PDSCH, the value of d ₂ is related to the priority of PUCCH, T _ext represents the length of CP extension, T _C =1 /(Δf _max ·N _f ), Δf _max =480·10 ³ Hz, N _f =4096, μ represents the subcarrier spacing configuration.

It should be noted that, in some embodiments, the measurement unit of the first processing time length T _proc,1 may be a sign. In some other embodiments, the PDSCH decoding time of the terminal equipment is different in different situations. For example, under different subcarrier intervals, the PDSCH decoding time of the terminal equipment is different.

Correspondingly, if the starting position of the time domain unit of the PUCCH is not earlier than the first symbol L ₁ , then the terminal device has time to decode the PDSCH, which can be understood as satisfying the timing relationship in the HARQ feedback. On the contrary, if the start position of the time domain unit of PUCCH is earlier than the start position of the first symbol L ₁ , then the terminal device may not have time to decode the PDSCH, which can be understood as not satisfying the timing relationship in HARQ feedback .

For ease of understanding, the following describes the behavior of the terminal device when the timing relationship in the HARQ feedback process is satisfied and the behavior of the terminal device when the timing relationship in the HARQ feedback process is not satisfied with reference to FIG. 2 .

Referring to Figure 2, if the time domain unit of PDSCH is time domain unit 210, then the start position in the time domain unit of PDSCH transmission is not earlier than the start position of the first symbol _L1 , that is, it can be understood that the terminal device is passing the PUCCH Before sending the HARQ-ACK information, there is enough time to decode the PDSCH, so the terminal device can send the HARQ-ACK information on the PUCCH.

It should be noted that the start position of the above-mentioned time domain unit for transmitting PDSCH is not earlier than the start position of the first symbol L ₁ except that the start position of the time domain unit containing PDSCH is later than the start position of the first symbol L ₁ (for example, the time domain position of the time domain unit 210 in FIG. 2 ), it may also include the case that the start position of the time domain unit of PDSCH overlaps with the start position of the first symbol _L1 .

Continuing to refer to FIG. 2, if the time domain unit for transmitting PDSCH is time domain unit 220, then the starting position in the time domain unit for transmitting PDSCH is earlier than the starting position of the first symbol _L1 , that is, it can be understood that the terminal device is passing Before the PUCCH sends the HARQ-ACK information, the terminal device does not have enough time to decode the PDSCH, therefore, the terminal device may not send the HARQ-ACK information on the PUCCH.

Communication process 2. Uplink data scheduling process.

As introduced above, in order to achieve uplink synchronization, the timing for the terminal device to send an uplink signal needs to be adjusted based on the TA. Moreover, the process of the network device configuring the TA for the terminal device and the network device configuring the time slot offset value _K2 for the terminal device are two independent processes. Therefore, there may be a mismatch between the TA of the terminal device and the time slot offset value _K2 In other words, the PUSCH transmission time adjusted based on the TA arrives before the PUSCH preparation time of the terminal device ends, or in other words, the PUSCH transmission time arrives before the terminal device completes the PUSCH preparation in time.

In order to standardize the behavior of the terminal equipment in the above situation, the second symbol L ₂ is first introduced into the existing communication protocol, and through the transmission between the starting position of the time domain unit of PUSCH and the starting position of the second symbol L ₂ to determine whether the position of the starting resource of the PUSCH in the time domain satisfies the timing relationship in the uplink data scheduling process. Wherein, the above-mentioned second symbol _L2 can be defined as: the next uplink symbol after the second processing time length after the starting position of the CP is later than the end position of receiving the last symbol of the PDCCH for scheduling DCI assigned by the PUSCH.

计算，其中，N ₂表示终端设备的PUSCH准备时间，如果该PUSCH中的第一个符号仅用于传输DMRS，那么d _2,1＝0，否则d _2,1＝1，d ₂的取值和PUSCH的优先级有关，T _ext表示CP延长的长度，T _swit根据是否触发上行切换的时间间隔(gap)确定，d _2,2根据是否被DCI触发带宽部分(bandwidth part，BWP)切换确定，T _C＝1/(Δf _max·N _f)，Δf _max＝480·10 ³赫兹，N _f＝4096，μ表示子载波间隔配置。 In some implementation manners, the second processing time length T _proc,2 is determined based on the PUSCH preparation time of the terminal device. For example, the relationship between the second processing time length T _{proc, 2} and the PUSCH preparation time can be obtained by the formula

Calculate, where N ₂ represents the PUSCH preparation time of the terminal equipment, if the first symbol in the PUSCH is only used to transmit DMRS, then d _2,1 =0, otherwise d _2,1 =1, the value of d ₂ It is related to the priority of PUSCH, T _ext indicates the length of CP extension, T _swit is determined according to the time interval (gap) of whether to trigger uplink switching, d _{2, 2} is determined according to whether DCI triggers the bandwidth part (bandwidth part, BWP) switching, T _C =1/(Δf _max ·N _f ), Δf _max =480·10 ³ Hz, N _f =4096, μ represents the subcarrier spacing configuration.

It should be noted that, in some implementation manners, the measurement unit of the second processing time length T _proc,2 may be a symbol. In other implementation manners, the PUSCH preparation time of the terminal equipment is different in different situations. For example, under different subcarrier intervals, the PUSCH preparation time of the terminal equipment is different.

Correspondingly, if the starting position of the time domain unit of PUCCH is not earlier than the starting position of the second symbol _L2 , then the terminal device has time to prepare the uplink data that needs to be sent through the PUSCH, which can be understood as satisfying the uplink data scheduling timing relationship in . On the contrary, if the start position of the time domain unit of PUSCH is earlier than the start position of the second symbol _L2 , then the terminal device may not have time to prepare the uplink data that needs to be sent through PUSCH, which can be understood as not satisfying the uplink data scheduling timing relationship in .

For ease of understanding, the behavior of the terminal device in the case of the timing relationship in the uplink data scheduling and the behavior of the terminal device in the case of not satisfying the timing relationship in the uplink data scheduling are introduced below with reference to FIG. 3 .

Referring to FIG. 3, if the time domain unit for transmitting PUSCH is time domain unit 310, the starting position of the time domain unit for transmitting PUSCH is not earlier than the starting position of the second symbol _L2 , that is, it can be understood that the terminal device is passing the PUSCH Before sending the uplink data, the terminal device has enough time to prepare for sending the uplink data, therefore, the terminal device can send the uplink data on the PUSCH.

It should be noted that the starting position of the above-mentioned time domain unit for transmitting PUSCH is not earlier than the starting position of the second symbol _L2 except that the starting position of the time domain unit including transmitting PUSCH is later than the starting position of the second symbol _L2 The situation of the position (for example, the time domain position of the time domain unit 310 in FIG. 3 ) may also include the situation that the start position of the time domain unit for transmitting PUSCH overlaps with the start position of the second symbol _L2 .

Continuing to refer to FIG. 3, if the time domain unit for transmitting PUSCH is the time domain unit 320, the starting position of the time domain unit for transmitting PUSCH is earlier than the starting position of the second symbol _L2 , that is, it can be understood that the terminal device is passing the PUSCH Before sending the uplink data, the terminal device does not have enough time to prepare the uplink data, therefore, the terminal device may not send the uplink data on the PUSCH.

Communication process 3. CSI reporting process.

As mentioned above, each CSI reporting moment corresponds to a CSI reference resource. At present, in a communication system (for example, NR system), the CSI reference resource can be defined as the CSI reference resource for reporting CSI in the uplink time domain unit n' is determined according to the downlink time domain unit nn _CSI-ref , where the downlink The time-domain unit n' is associated with the uplink time-domain unit n; the value of n _CSI-r depends on the type of CSI reporting.

It should be noted that, for the mapping relationship between the above-mentioned uplink time-domain unit and the downlink time-domain unit, refer to the introduction above, and for the sake of brevity, details are not repeated here.

Correspondingly, the terminal device may determine the CSI reference resource based on the uplink time domain unit n' reported by the CSI and the association relationship between the uplink time domain unit n' and the downlink time domain unit n. Referring to Fig. 4, if the terminal device determines that the CSI reference resource corresponds to a valid downlink time domain unit, then the terminal device reports CSI in the uplink time domain unit n'. If the terminal device determines that the CSI reference resource does not correspond to a valid downlink time domain unit, the terminal device may ignore reporting CSI in the uplink time domain unit n′.

Timing Relationship Enhancement for NTN System

From the previous introduction about the NTN system, it can be known that the NTN system usually has a large transmission delay. In order to overcome the large transmission delay in the NTN system, the above timing relationship of the NR system needs to be enhanced. A simple solution is to introduce an offset value (or an offset parameter) into the system. The offset value can be represented by K _offset . This offset value can then be applied to the associated timing relationship.

For example, after the offset value K _offset is introduced in the HARQ feedback process, the determination of the HARQ feedback timing (or the transmission timing of HARQ-ACK transmission on PUCCH) can be changed to: for the time domain unit of PUCCH transmission, the terminal device should The corresponding HARQ-ACK information is transmitted on the PUCCH resource within the domain unit n+K ₁ +K _offset .

For another example, after the offset value K _offset is introduced in the process of uplink data transmission, the determination of the timing of uplink data transmission can be changed to: for the time domain unit of PUSCH transmission, the terminal device should be in the time domain unit n+K ₂ +K _offset The corresponding uplink data is transmitted on the PUSCH resource in the PUSCH.

For another example, after the offset value K _offset is introduced in the CSI reporting process, the determination of the CSI reference resource may become: the terminal device determines the time domain unit corresponding to the CSI reference resource based on nn _CSI-ref -K _offset .

Indication and update of K _offset in NTN system

In the NTN system, the network device can indicate the offset value K _offset to the terminal device through a system message. The offset value K _offset can be used to enhance the timing relationship of the terminal equipment during the HARQ feedback process, the uplink data transmission process and the CSI reporting process.

In different scenarios, the above offset value K _offset may also be refined into a terminal-specific offset value and a public offset value. Wherein, the terminal-specific offset value can be understood as a dedicated offset value specially configured by the network device for the terminal device. The public offset value can be understood as that the network device uses the K _offset corresponding to the terminal device farthest from the network device in a preset area (for example, a cell) as all or part of the public offset value within the preset range.

As the network device (for example, satellite) and/or the terminal device move, the communication distance between the network device and the terminal device changes, at this time, the offset value K _offset may be updated. In some implementation manners, the offset value K _offset may be updated after the terminal device enters the connected state (or the RRC connected state). For example, the network device may update the offset value K _offset through RRC signaling or MAC CE. The RRC signaling may be, for example, RRC configuration signaling, or RRC reconfiguration signaling.

As mentioned above, some communication systems (such as the NTN system) have relatively large time delays. Therefore, this type of communication system usually introduces an offset value (such as K _offset ) to enhance the timing relationship in the communication system. For example, in the HARQ feedback process, the terminal device may receive the first physical shared channel, and then feed back feedback information for the first physical shared channel through the first feedback channel. At this time, the above offset value is used to indicate the time interval from the completion of receiving the first physical shared channel to sending the first feedback channel. In addition, in order to realize uplink synchronization, the terminal device needs to adjust the time for sending the first feedback channel based on the TA.

However, the process of the network device configuring the TA for the terminal device and the process of configuring the offset value for the terminal device by the network device are two independent processes, and there may be cases where the TA of the terminal device does not match the offset value. It does not specify how this situation should be dealt with. If the understanding between the end device and the network device on how to deal with this situation is not consistent, the communication process will be messed up. For example, after the terminal device adjusts the sending time of the first feedback channel based on the TA, the starting position of the time domain unit for transmitting the first feedback channel is too early, causing the terminal device to have no time to complete decoding the first physical shared channel. Feedback information is sent through the first feedback channel to indicate the decoding result of the first physical shared channel. The current communication protocol does not specify how to deal with this situation. If the understanding between the end device and the network device on how to deal with this situation is not consistent, the communication process will be messed up.

Therefore, in order to avoid the above problems, this application provides a communication method to regulate the behavior of the terminal device when the timing relationship in the HARQ feedback process is satisfied in the NTN system, or the behavior of the terminal device when the timing relationship in the HARQ feedback process is not satisfied , to unify the understanding between end devices and network devices in different situations. The following will introduce the communication method in the embodiment of the present application with reference to FIG. 5 .

FIG. 5 is a flowchart of a communication method according to an embodiment of the present application. The method shown in FIG. 5 includes step S510 to step S530.

In step S510, the terminal device receives the first physical shared channel.

In the scenario of sidelink communication, the above-mentioned first physical shared channel may be the PSSCH. In a scenario of downlink transmission, the above-mentioned first physical shared channel may be a PDSCH.

In step S520, the terminal device determines the first feedback channel according to the first offset value and the first HARQ feedback timing.

The above-mentioned first feedback channel is used to carry feedback information corresponding to the first physical shared channel.

In the scenario of sidelink communication, the above-mentioned first feedback channel may be PSFCH. In the scenario of downlink transmission, the above-mentioned first feedback channel may be PUCCH.

There are many ways to determine the above-mentioned first offset value. In some implementations, the above-mentioned first offset value may be based on the dedicated offset value of the terminal device (or "terminal-specific offset value"), the subcarrier spacing configuration corresponding to the first physical shared channel, and the scheduling of the first physical shared channel. The channel is determined by at least one of the subcarrier spacing configuration corresponding to the control channel and the subcarrier spacing configuration corresponding to the first feedback channel. In some other implementation manners, the above-mentioned first offset value may be based on the common offset value, the subcarrier spacing configuration corresponding to the first physical shared channel, the subcarrier spacing configuration corresponding to the control channel for scheduling the first physical shared channel, and the second It is determined by at least one item in the subcarrier spacing configuration corresponding to a feedback channel.

In some other implementation manners, the above-mentioned first offset value may be based on at least one of the dedicated offset value of the terminal device (or "terminal-specific offset value"), downlink subcarrier spacing configuration, and uplink subcarrier spacing configuration definite. In some other implementation manners, the first offset value may be determined according to at least one of a public offset value, a downlink subcarrier spacing configuration, and an uplink subcarrier spacing configuration. Certainly, in some other implementation manners, the foregoing first offset value may also be a terminal-specific offset value or a public offset value.

In some implementations, if the first PDSCH is a DCI-scheduled PDSCH scrambled by a temporary cell-radio network temporary identifier (temporary cell-radio network temporary identifier, TC-RNTI), the above-mentioned first offset value is based on the public offset The value is determined. For example, even if a terminal device is configured with a dedicated offset value for the terminal device, when receiving a DCI-scheduled PDSCH scrambled by the TC-RNTI, its corresponding first offset value is still determined based on the common offset value.

In some implementation manners, if the first PDSCH is a DCI-scheduled PDSCH corresponding to DCI format 1_0, the above-mentioned first offset value is determined according to a common offset value. For example, even if a terminal device is configured with a dedicated offset value for the terminal device, when receiving a DCI-scheduled PDSCH corresponding to DCI format 1_0, its corresponding first offset value is still determined based on the common offset value.

In some implementations, if the first PDSCH is a DCI-scheduled PDSCH corresponding to DCI format 1_1 or DCI format 1_2, when the terminal device is configured with a dedicated offset value for the terminal device, the above-mentioned first offset value is based on the terminal device's determined by a dedicated offset value; otherwise, the above-mentioned first offset value is determined according to a public offset value.

In some implementation manners, if the first PDSCH is a DCI-scheduled PDSCH corresponding to a common search space, the above-mentioned first offset value is determined according to the common offset value. For example, even if a terminal device is configured with a dedicated offset value for the terminal device, when receiving a DCI-scheduled PDSCH corresponding to a common search space, its corresponding first offset value is still determined based on the common offset value.

In some implementations, if the first PDSCH is a DCI-scheduled PDSCH corresponding to a terminal-device-specific search space, when the terminal device is configured with a terminal-device-specific offset value, the first offset value is based on the terminal-device-specific offset value. Otherwise, the above-mentioned first offset value is determined according to the common offset value.

In some implementations, the first offset value may be determined according to at least one of a target offset value, a downlink subcarrier spacing configuration, and an uplink subcarrier spacing configuration, wherein the target offset value may be determined according to the above method The determined public offset value or the private offset value of the end device.

In some implementation manners, the foregoing downlink subcarrier spacing configuration includes a subcarrier spacing configuration corresponding to the first physical shared channel, and/or a subcarrier spacing configuration corresponding to a PDCCH that schedules the first physical shared channel. In some other implementation manners, the uplink subcarrier spacing configuration includes a subcarrier spacing configuration corresponding to the first feedback channel.

In some implementation manners, the target subcarrier spacing configuration is the subcarrier spacing configuration corresponding to the largest first processing time length among the downlink subcarrier spacing configuration and the uplink subcarrier spacing configuration.

In some implementations, the first offset value is determined based on the target subcarrier spacing configuration.

For example, assuming that the subcarrier spacing configuration corresponding to the first physical shared channel corresponds to 15kHz, the subcarrier spacing configuration corresponding to the PDCCH scheduling the first physical shared channel corresponds to 15kHz, and the subcarrier spacing configuration corresponding to the first feedback channel corresponds to 30kHz, then the target subcarrier The carrier spacing configuration corresponds to 15kHz. Further assuming that the target offset value corresponds to 10 time slots of 15 kHz, the first offset value corresponds to 10 time slots of 15 kHz. Alternatively, assuming that the target offset value corresponds to 10 time slots of 30 kHz, the first offset value corresponds to 5 time slots of 15 kHz.

In step S530, the terminal device determines whether to send or not to send the first feedback channel.

In the embodiment of the present application, it is clarified that after the terminal device determines the first feedback channel according to the first offset value and the first HARQ feedback timing, the terminal device can determine whether to send or not to send the first feedback channel, so that the terminal device and The network device has a consistent understanding of whether the terminal device sends the first feedback channel, thereby avoiding confusion in the communication process.

In some implementation manners, a second time domain unit may be introduced to measure whether the terminal device has enough time to complete the decoding process of the first physical shared channel before sending the first feedback channel. Wherein, the second time domain unit may be determined based on time domain resources for transmitting the first physical shared channel and the first processing time length. In some implementations, the above-mentioned second time domain unit may be defined as: the start position of the cyclic prefix CP is later than the first processing time length after the end position of the last symbol reception of the first physical shared channel up sign. Wherein, the first processing time length is determined based on the decoding time of the physical shared channel of the terminal device. For the specific calculation formula, refer to the introduction above, and for the sake of brevity, details are not repeated here.

Based on the above definition of the second time domain unit, it can be seen that the terminal device can determine whether to send the first feedback based on the starting position of the first time domain unit and the starting position of the second time domain unit of the first feedback channel. channel. In some implementations, the above step S530 may include that if the starting position of the first time domain unit of the first feedback channel is not earlier than the starting position of the second time domain unit, before sending the first feedback channel, the terminal device, The decoding of the first physical shared channel can be completed, and at this time, the terminal device can determine to send the first feedback channel. That is, if the starting position of the first time domain unit of the first feedback channel is not earlier than the starting position of the second time domain unit, the terminal device determines to send the first feedback channel.

It should be noted that the above terminal device determines to send the first feedback channel, which may be replaced by the terminal device expecting the first uplink symbol of the first feedback channel determined according to the first offset value and the first HARQ feedback timing while considering the influence of TA The starting position after is not earlier than the starting position of the second time domain unit. Alternatively, the above-mentioned terminal device determines to send the first feedback channel. Alternatively, the terminal device should feed back effective feedback information through the first feedback channel. Wherein, the valid feedback information may refer to a decoding result of the terminal device on the first physical shared channel.

In some other implementation manners, the above step S530 may include that if the starting position of the first time domain unit of the first feedback channel is earlier than the starting position of the second time domain unit, before sending the first feedback channel, the terminal device, It is likely that the decoding of the first physical shared channel cannot be completed, and at this time, the terminal device may determine not to send the first feedback channel. That is, if the starting position of the first time domain unit of the first feedback channel is earlier than the starting position of the second time domain unit, the terminal device determines not to send the first feedback channel.

It should be noted that the above-mentioned terminal device determines not to send the first feedback channel, which may be replaced by the terminal device not expecting the first uplink symbol of the first PUCCH determined according to the first offset value and the first HARQ feedback timing to consider the TA The affected starting position is no earlier than the starting position of the second time domain unit. Alternatively, the above-mentioned terminal device determines not to send the first feedback channel. Alternatively, the terminal device does not provide effective feedback information through the first feedback channel. Wherein, the valid feedback information may refer to a decoding result of the terminal device on the first physical shared channel.

It should be noted that the above first time domain unit of the first feedback channel can be understood as the first time domain unit in the time domain unit of transmitting the first feedback channel, or in other words, the time domain of transmitting the first feedback channel in the time domain The earliest time-domain unit among domain units, where a time-domain unit may be, for example, a slot or a symbol.

As mentioned above, the network device can configure a public offset value for the terminal device. Since the public offset value can be based on the offset value corresponding to the terminal device farthest from the network device within a preset range (for example, a cell), therefore, for For most of the terminal devices within the preset range, the distance between these terminal devices and the network device is smaller than the communication distance between the furthest terminal device and the network device, that is, for these terminal devices, The time length corresponding to the public offset value is greater than the TA of the terminal device. In this case, the starting position of the first time domain unit of the first feedback channel is usually no earlier than the starting position of the second time domain unit, and the terminal The device may directly send the first feedback channel.

That is to say, the above step S530 further includes the terminal device determining to send the first feedback channel, where the starting position of the first time domain unit of the first feedback channel is not earlier than the starting position of the second time domain unit.

It should be noted that the first time domain unit of the first feedback channel is the first symbol of the first feedback channel adjusted based on the timing advance TA of the terminal device. For example, when the first feedback channel is the PUCCH, the first symbol of the first feedback channel may be the first uplink symbol of the first PUCCH. For another example, when the first feedback channel is the PSFCH, the first symbol of the first feedback channel may be the first sidelink symbol of the first PSFCH.

For ease of understanding, the following uses the transmission of a target data block in a downlink data transmission scenario as an example to introduce the communication method in the embodiment of the present application.

In some embodiments, after the terminal device receives the target PDSCH carrying the target transport block, the terminal device assigns HARQ-ACK timing information K ₁ according to the first offset value (that is, the "HARQ feedback timing" above) and the PUCCH resource to determine a target PUCCH, where the target PUCCH is used to carry HARQ-ACK information corresponding to the target PDSCH.

If the starting position of the first uplink symbol of the target PUCCH is not earlier than the starting position of the first symbol L ₁ after considering the impact of timing advance, the terminal device should provide valid HARQ-ACK information corresponding to the target PDSCH. In other words, the terminal device expects that the starting position of the first uplink symbol of the target PUCCH determined according to the first offset value and K ₁ after considering the influence of timing advance is no earlier than the starting position of the first symbol L ₁ .

If the starting position of the first uplink symbol of the target PUCCH is earlier than the starting position of the first symbol L ₁ after considering the impact of timing advance, the terminal device may not provide valid HARQ-ACK information corresponding to the target PDSCH. In other words, the terminal device does not expect that the starting position of the first uplink symbol of the target PUCCH determined according to the first offset value and the HARQ-ACK timing information K ₁ is earlier than the first symbol L ₁ after considering the influence of timing advance.

Optionally, the above-mentioned first offset value is determined according to at least one of the following: terminal equipment-specific offset value, public target offset value, downlink subcarrier spacing configuration (such as target PDSCH subcarrier spacing configuration and/or scheduling target Subcarrier spacing configuration of PDCCH of PDSCH), uplink subcarrier spacing configuration (for example, target PUCCH subcarrier spacing configuration).

Optionally, the first offset value is determined according to a terminal device-specific offset value configured by the network device.

In some embodiments, after the terminal device receives the target PDSCH carrying the target transport block, the UE determines the target PUCCH according to the first offset value, the allocated HARQ-ACK timing information K ₁ and the PUCCH resource, then the terminal device should provide Effective HARQ-ACK information corresponding to the target PDSCH, where the target PUCCH is used to carry the HARQ-ACK information corresponding to the target PDSCH.

Optionally, the first offset value is determined according to a public offset value configured by the network device.

For ease of understanding, the following describes the communication method in the embodiment of the present application in a downlink transmission scenario with reference to FIG. 6 .

Referring to FIG. 6 , it is assumed that the first offset value K _offset,1 is 12 time slots, the first HARQ feedback sequence K ₁ is 4 time slots, and the end position of the first PDSCH is the last symbol of time slot n. At this time, the starting position of the first time-domain unit of the first PUCCH adjusted based on the TA of the terminal device is the 0th symbol in the slot n+K _offset,1 +K ₁ (ie slot n+16). It should be understood that, for ease of description, in this embodiment of the present application, symbols in a time slot start from 0.

In case 1, the second time domain unit ₁ is located at the 8th symbol in slot n+15, at this time, the starting position of the first time domain unit of the first PUCCH is later than the starting position of the second time domain unit ₁ If the starting position is not specified, the terminal device may use the first symbol of slot n+16 as the starting time domain resource to send the first PUCCH.

In case 2, the second time domain unit ₂ is located at the 8th symbol in slot n+16, at this time, the starting position of the first time domain unit of the first PUCCH is earlier than the starting position of the second time domain unit ₁ If the starting position is not specified, the terminal device does not send the first PUCCH.

As mentioned above, some communication systems (such as the NTN system) have relatively large time delays. Therefore, this type of communication system usually introduces an offset value (such as K _offset ) to enhance the timing relationship in the communication system. For example, in the process of data scheduling, the terminal device may receive first control information for scheduling the first physical shared channel, and then send data through the first physical shared channel. At this time, the above offset value is used to indicate a time interval from the completion of receiving the first control information to sending the first physical shared channel. In addition, in order to realize uplink synchronization, the terminal device needs to adjust the sending time of the first physical shared channel based on the TA.

However, the process of the network device configuring the TA for the terminal device and the process of configuring the offset value for the terminal device by the network device are two independent processes, and there may be cases where the TA of the terminal device does not match the offset value. It does not specify how this situation should be dealt with. If the understanding between the end device and the network device on how to deal with this situation is not consistent, the communication process will be messed up. For example, after the terminal device adjusts the sending time of the first physical shared channel based on the TA, the starting position of the time domain unit for transmitting the first physical shared channel is too early, causing the terminal device to have no time to prepare the data that needs to be sent through the first physical shared channel , it is time to send the first physical shared channel, and the current communication protocol does not specify how to deal with this situation. If the understanding between the end device and the network device on how to deal with this situation is not consistent, the communication process will be messed up.

Therefore, in order to avoid the above problems, this application provides a communication method to standardize the behavior of the terminal device when the timing relationship in the data scheduling process is satisfied in the NTN system, or the behavior of the terminal device when the timing relationship in the data scheduling process is not satisfied , to unify the understanding between end devices and network devices in different situations. The following will introduce the communication method in the embodiment of the present application with reference to FIG. 7 .

Fig. 7 is a flowchart of a communication method according to another embodiment of the present application. The method shown in FIG. 7 includes steps S710 to S730.

In step S710, the terminal device receives first control information.

The foregoing first control information is used to schedule the first physical shared channel. In the scenario of side communication, the above-mentioned first control information may be SCI, and the first physical shared channel may be PSSCH, that is, the above-mentioned step S510 may include that the terminal device receives the first SCI sent by other terminal devices, and the first SCI is used for The first PSSCH is scheduled.

In the scenario of downlink transmission, the above-mentioned first control information may be DCI, and correspondingly, the first physical shared channel may be PUSCH, that is, the above-mentioned step S510 may include that the terminal device receives the first DCI sent by the network device, and the first DCI uses for scheduling the first PUSCH.

In step S720, the terminal device determines the first physical shared channel according to the first offset value and the time slot offset value.

The terminal device determining the first physical shared channel according to the first offset value and the time slot offset value may include that the terminal device determines the time domain unit of the first physical shared channel according to the first offset value and the time slot offset value.

When the above-mentioned first physical shared channel is the first PUSCH, in some implementations, the terminal device may base on the first offset value, the time slot offset value K ₂ , the starting position of the time domain unit of the first PUSCH, and the first PUSCH The length of the occupied time domain resource determines the first PUSCH, wherein the starting position of the time domain unit of the first PUSCH and the length of the time domain resource occupied by the first PUSCH can be indicated by TDRA in the first DCI.

There are many ways to determine the above-mentioned first offset value. In some implementations, the above-mentioned first offset value may be based on the dedicated offset value of the terminal device (or "terminal-specific offset value"), the subcarrier spacing configuration corresponding to the first physical shared channel, and the scheduling of the first physical shared channel. The channel is determined by at least one of the subcarrier spacing configurations corresponding to the control channel. In some other implementation manners, the first offset value may be based on the common offset value, the subcarrier spacing configuration corresponding to the first physical shared channel, and the subcarrier spacing configuration corresponding to the control channel that schedules the first physical shared channel. At least one is certain.

In an implementation manner, the above-mentioned first offset value may be based on at least one of the terminal device's dedicated offset value (or "terminal-specific offset value"), downlink subcarrier spacing configuration, and uplink subcarrier spacing configuration definite. In some other implementation manners, the first offset value may be determined according to at least one of a public offset value, a downlink subcarrier spacing configuration, and an uplink subcarrier spacing configuration. Certainly, in some other implementation manners, the foregoing first offset value may also be a terminal-specific offset value or a public offset value.

In some implementation manners, if the first PUSCH is a DCI-scheduled PUSCH scrambled by the TC-RNTI, the above-mentioned first offset value is determined according to the common offset value. For example, even if a terminal device is configured with a dedicated offset value for the terminal device, when receiving a DCI-scheduled PUSCH scrambled by the TC-RNTI, its corresponding first offset value is still determined based on the common offset value.

In some implementation manners, if the first PUSCH is a DCI-scheduled PUSCH corresponding to DCI format 0_0, the above-mentioned first offset value is determined according to a common offset value. For example, even if a terminal device is configured with a dedicated offset value for the terminal device, when receiving a DCI-scheduled PUSCH corresponding to DCI format 0_0, its corresponding first offset value is still determined based on the common offset value.

In some implementations, if the first PUSCH is a DCI-scheduled PUSCH corresponding to DCI format 0_1 or DCI format 0_2, when the terminal device is configured with a dedicated offset value for the terminal device, the above-mentioned first offset value is based on the terminal device's determined by a dedicated offset value; otherwise, the above-mentioned first offset value is determined according to a public offset value.

In some implementation manners, if the first PUSCH is a DCI-scheduled PUSCH corresponding to a common search space, the above-mentioned first offset value is determined according to the common offset value. For example, even if a terminal device is configured with a dedicated offset value for the terminal device, when receiving a DCI-scheduled PUSCH corresponding to a common search space, its corresponding first offset value is still determined based on the common offset value.

In some implementations, if the first PUSCH is a DCI-scheduled PUSCH corresponding to the terminal device-specific search space, when the terminal device is configured with a terminal device-specific offset value, the above-mentioned first offset value is based on the terminal device-specific offset value. Otherwise, the above-mentioned first offset value is determined according to the common offset value.

In some implementations, the first offset value may be determined according to at least one of a target offset value, a downlink subcarrier spacing configuration, and an uplink subcarrier spacing configuration, wherein the target offset value may be determined according to the above method The determined public offset value or the private offset value of the end device.

In some implementation manners, the foregoing downlink subcarrier spacing configuration includes a subcarrier spacing configuration corresponding to the first control information, and/or a subcarrier spacing configuration corresponding to a control channel that schedules the first control information. For example, in a scenario of uplink data scheduling, when the first control information is DCI, the control channel is PDCCH. In some other implementation manners, the uplink subcarrier spacing configuration includes a subcarrier spacing configuration corresponding to the first physical shared channel. For example, in the scenario of uplink data scheduling, the uplink subcarrier spacing configuration includes the subcarrier spacing configuration corresponding to the PUSCH.

In some implementation manners, the target subcarrier spacing configuration is the subcarrier spacing configuration corresponding to the maximum second processing time length among the downlink subcarrier spacing configuration and the uplink subcarrier spacing configuration.

In some implementations, the first offset value is determined based on the target subcarrier spacing configuration.

For example, assuming that the subcarrier spacing configuration corresponding to the first PUSCH corresponds to 30 kHz, and the subcarrier spacing configuration corresponding to the PDCCH scheduling the first PUSCH corresponds to 30 kHz, then the target subcarrier spacing configuration corresponds to 30 kHz. Further assuming that the target offset value corresponds to 10 time slots of 15 kHz, the first offset value corresponds to 20 time slots of 30 kHz. Alternatively, assuming that the target offset value corresponds to 10 time slots of 30 kHz, the first offset value corresponds to 10 time slots of 30 kHz.

In step S730, the terminal device determines whether to send or not to send the first physical shared channel.

In the embodiment of the present application, it is clarified that after the terminal device determines the first physical shared channel according to the first offset value and the time slot offset value, the terminal device can determine whether to send or not send the first physical shared channel, which can make the terminal The device and the network device have the same understanding of whether the terminal device sends the first physical shared channel, thereby avoiding confusion in the communication process.

In some implementations, a third time domain unit may be introduced to measure whether the terminal device has enough time to complete the preparation process of the first physical shared channel before sending the first physical shared channel (or in other words, through the first physical shared channel The preparation process of the data sent by the channel). Wherein, the third time domain unit may be determined based on the time domain resource for transmitting the first control information and the second processing time length. In some implementation manners, the above-mentioned third time domain unit may be defined as: the next uplink symbol whose CP start position is later than the second processing time length after the end position of the last symbol reception of the first control information. Wherein, the second processing time length is determined based on the preparation time of the first physical shared channel of the terminal device, and the specific calculation formula can refer to the introduction above, and for the sake of brevity, details are not repeated here.

Based on the above definition of the third time domain unit, it can be seen that the terminal device can determine whether to send the first time domain unit based on the starting position of the first time domain unit and the starting position of the third time domain unit of the first physical shared channel. Physical shared channel. In some implementations, the above step S730 may include that if the starting position of the first time domain unit of the first physical shared channel is not earlier than the starting position of the third time domain unit, then the terminal device sends the first physical shared channel Before, the preparation process for the data to be sent may be completed, and at this time, the terminal device may determine to send the first physical shared channel. That is to say, if the starting position of the first time domain unit of the first physical shared channel is not earlier than the starting position of the third time domain unit, the terminal device determines to send the first physical shared channel.

It should be noted that the terminal device determines to send the first physical shared channel, which may be replaced by the terminal device expecting the first uplink symbol of the first physical shared channel determined according to the first offset value and the time slot offset value to be considered The starting position after TA influence is no earlier than the starting position of the third time domain unit. Alternatively, the above-mentioned terminal device determines to send the first physical shared channel. Alternatively, the terminal device should transmit data (for example, TB) through the first physical shared channel.

In some other implementation manners, the above step S730 may include that if the starting position of the first time domain unit of the first physical shared channel is earlier than the starting position of the third time domain unit, the terminal device sends the first physical shared channel Before, the preparation process for the data to be sent may not be completed, and at this time, the terminal device may determine not to send the first physical shared channel. That is to say, if the starting position of the first time domain unit of the first physical shared channel is earlier than the starting position of the third time domain unit, the terminal device determines not to send the first physical shared channel.

It should be noted that the above-mentioned terminal device determines not to send the first physical shared channel, it may be replaced by the terminal device not expecting the first uplink symbol of the first PUSCH determined according to the first offset value and the time slot offset value to be considered The starting position after TA influence is no earlier than the starting position of the third time domain unit. Alternatively, the above-mentioned terminal device determines not to send the first physical shared channel. Alternatively, the terminal device ignores scheduling of the first control information.

It should be noted that the above first time domain unit of the first physical shared channel can be understood as the first time domain unit in the time domain unit of the first physical shared channel, or in other words, the time domain transmits the first physical shared channel The earliest time-domain unit of the time-domain units of a channel, where a time-domain unit may be, for example, a time slot or a symbol.

As mentioned above, the network device can configure a public offset value for the terminal device. Since the public offset value can be based on the offset value corresponding to the terminal device farthest from the network device within a preset range (for example, a cell), therefore, for For most of the terminal devices within the preset range, the distance between these terminal devices and the network device is smaller than the communication distance between the furthest terminal device and the network device, that is, for these terminal devices, The time length corresponding to the common offset value is greater than the TA of the terminal device. In this case, the starting position of the first time domain unit of the first physical shared channel is usually not earlier than the starting position of the third time domain unit, and the terminal The device may directly send the first physical shared channel.

That is to say, the above step S730 also includes the terminal device determining to send the first physical shared channel, where the starting position of the first time domain unit of the first physical shared channel is not earlier than the starting position of the third time domain unit.

It should be noted that the first time domain unit of the first physical shared channel is the first symbol of the first physical shared channel adjusted based on the timing advance TA of the terminal device.

For ease of understanding, the following uses a process of scheduling transmission resources for a target transmission block in a data scheduling scenario as an example to introduce the communication method in the embodiment of the present application.

In some embodiments, after the terminal device receives the scheduling DCI assigned by the target PUSCH, the terminal device determines the target PUSCH according to the first offset value, the time slot offset value K2, and the starting position and length indicated by TDRA in the scheduling DCI distribute. Wherein, the target PUSCH is allocated for transmitting a target transport block and a demodulation reference signal (demodulation reference signal, DMRS).

If the starting position of the first uplink symbol allocated by the target PUSCH is not earlier than the starting position of the second symbol _L2 after considering the impact of timing advance, then the terminal device should transmit the target transport block. In other words, the terminal device expects the starting position of the first uplink symbol of the target PUSCH determined according to the first offset value and K ₂ to be no earlier than the second symbol L ₂ after considering the influence of timing advance.

If the starting position of the first uplink symbol allocated by the target PUSCH is earlier than the starting position of the second symbol _L2 after considering the influence of timing advance, the terminal device may ignore the scheduling DCI. In other words, the terminal device does not expect that the starting position of the first uplink symbol of the target PUSCH determined according to the first offset value and K ₂ is earlier than the second symbol L ₂ after considering the impact of timing advance.

Optionally, the first offset value is determined according to at least one of the following: terminal device-specific target offset value, public target offset value, downlink subcarrier spacing configuration (such as scheduling DCI subcarrier spacing configuration), uplink Subcarrier spacing configuration (for example, target PUSCH subcarrier spacing configuration).

Optionally, the first offset value is determined according to a terminal device-specific offset value configured by the network device.

In some embodiments, after the terminal device receives the scheduling DCI assigned by the target PUSCH, the terminal device determines the target according to the first offset value, the time slot offset value K ₂ and the starting position and length indicated by the TDRA in the scheduling DCI PUSCH allocation, then the terminal device shall transmit the target transport block, wherein the target PUSCH allocation is used to transmit the target transport block and DMRS.

Optionally, the first offset value is determined according to a public offset value configured by the network device.

For ease of understanding, the following describes the communication method in the embodiment of the present application by taking the uplink data transmission process as an example with reference to FIG. 8 .

Referring to FIG. 8 , it is assumed that the first offset value K _offset,1 is 12 time slots, the time slot offset value _K2 is 4 time slots, and the end position of the first DCI is the last symbol of time slot n. At this time, the starting position of the first time-domain unit of the first PUSCH adjusted based on the TA of the terminal device is the 0th symbol in the slot n+K _offset,1 +K ₁ (ie slot n+16). It should be understood that, for ease of description, the symbol numbers in the time slots start from 0 in the embodiment of the present application.

In case one, the third time domain unit ₁ is located at the 8th symbol in slot n+15, at this time, the starting position of the first time domain unit ₁ of the first DCI is later than that of the third time domain unit ₁ starting position, the terminal device may use the first symbol of slot n+16 as the starting time domain resource to send the first PUSCH.

In case 2, the third time domain unit ₂ is located at the 8th symbol in slot n+16, at this time, the starting position of the first time domain unit ₂ of the first DCI is earlier than that of the third time domain unit ₁ starting position, the terminal device does not send the first PUSCH.

As mentioned above, some communication systems (such as the NTN system) have relatively large time delays. Therefore, this type of communication system usually introduces an offset value (such as K _offset ) to enhance the timing relationship in the communication system. For example, in the process of reporting the first CSI, the terminal device may determine a CSI reference resource associated with the first CSI based on the first CSI. At this time, the above offset value is used to indicate the time interval between the reporting moment of the first CSI and the CSI reference resource. In addition, in order to realize uplink synchronization, the terminal device needs to adjust the time for sending the first CSI based on the TA.

However, the process of the network device configuring the TA for the terminal device and the process of configuring the offset value for the terminal device by the network device are two independent processes, and there may be cases where the TA of the terminal device does not match the offset value. It does not specify how this situation should be dealt with. If the understanding between the end device and the network device on how to deal with this situation is not consistent, the communication process will be messed up. For example, after the terminal device adjusts the sending time of the first CSI based on the TA, the CSI reference resource associated with the first CSI is no longer a valid downlink resource, and the function of the CSI reference resource cannot be realized so that the terminal device cannot obtain the CSI that needs to be reported. The current communication protocol does not specify how to deal with this situation. If the understanding between the end device and the network device on how to deal with this situation is not consistent, the communication process will be messed up.

Therefore, in order to avoid the above problems, this application provides a communication method to regulate the behavior of the terminal device when the timing relationship in the CSI reporting process is met in the NTN system, or the behavior of the terminal device when the timing relationship in the CSI reporting process is not satisfied , to unify the understanding between end devices and network devices in different situations. A communication method according to another embodiment of the present application will be introduced below with reference to FIG. 9 .

Fig. 9 is a flowchart of a communication method according to another embodiment of the present application. The method shown in FIG. 9 includes steps S910 to S920.

In step S910, the terminal device determines the first CSI reference resource according to the first offset value and the CSI reference resource offset value.

There are many ways to determine the above-mentioned first offset value. In an implementation manner, the above-mentioned first offset value may be based on the dedicated offset value of the terminal device (or "terminal-specific offset value"), downlink subcarrier spacing configuration, uplink subcarrier spacing configuration, and CA time slot offset. At least one of the shift values is determined. In some other implementation manners, the first offset value may be determined according to at least one of a public offset value, a downlink subcarrier spacing configuration, an uplink subcarrier spacing configuration, and a CA time slot offset value. Certainly, in some other implementation manners, the foregoing first offset value may also be a terminal-specific offset value or a public offset value.

In some implementations, when the terminal device is configured with a dedicated offset value of the terminal device, the above-mentioned first offset value is determined according to the dedicated offset value of the terminal device; otherwise, the above-mentioned first offset value is determined according to the public offset value The shift value is determined.

In some implementations, the first offset value may be determined according to at least one of a target offset value, a downlink subcarrier spacing configuration, and an uplink subcarrier spacing configuration, wherein the target offset value may be determined according to the above method The determined public offset value or the private offset value of the end device.

In some implementation manners, the foregoing downlink subcarrier spacing configuration includes a subcarrier spacing configuration corresponding to the CSI reference resource. In some other implementation manners, the uplink subcarrier spacing configuration includes a subcarrier spacing configuration corresponding to the first CSI.

In some implementation manners, the target subcarrier spacing configuration is determined based on at least one of the subcarrier spacing configuration corresponding to the CSI reference resource and the subcarrier spacing configuration corresponding to the first CSI.

In some implementations, the first offset value is determined based on the target subcarrier spacing configuration.

For example, in the case that the target subcarrier spacing configuration corresponds to 30 kHz, assuming that the target offset value corresponds to 10 time slots of 15 kHz, the first offset value corresponds to 20 time slots of 30 kHz. Alternatively, assuming that the target offset value corresponds to 10 time slots of 30 kHz, the first offset value corresponds to 10 time slots of 30 kHz.

It should be noted that, for the process of determining the first CSI reference resource by the terminal device, refer to the above introduction about the timing relationship in the CSI reporting process in the NTN system, and for the sake of brevity, details are not repeated here.

In step S920, the terminal device determines to send or not to send the first CSI associated with the first CSI reference resource based on the first CSI reference resource.

In the embodiment of this application, it is clarified that after the terminal device determines the first CSI reference resource according to the first offset value and the CSI reference resource offset value, the terminal device can determine whether to send or not send the first CSI reference resource based on the first CSI reference resource. , so that the terminal device and the network device can have the same understanding of whether the terminal device sends the first CSI, thereby avoiding confusion in the communication process.

In some implementation manners, the above step S920 may include: if the time domain position of the first CSI reference resource corresponds to a valid downlink time domain unit, the terminal device sends the first CSI. Wherein, the effective downlink time domain unit can be understood as the terminal device can use the downlink time domain unit to send the first CSI.

It should be noted that, the above-mentioned terminal device sending the first CSI may be replaced by the terminal device expecting that the CSI reference resource determined according to the third offset value and the CSI reference resource offset value corresponds to a valid downlink time slot.

In some implementation manners, the above step S920 may include: if the time domain position of the first CSI reference resource does not correspond to a valid downlink time domain unit, the terminal device does not send the first CSI.

It should be noted that the above terminal device does not send the first CSI, instead, the terminal device does not expect the CSI reference resource determined according to the third offset value and the CSI reference resource offset value to correspond to a valid downlink time slot.

In addition, in the embodiment of the present application, the foregoing time-domain resource for transmitting the first CSI is adjusted based on the TA of the terminal device.

For ease of understanding, the communication method in the embodiment of the present application is introduced below by taking the process of reporting CSI on the uplink time slot n' as an example.

In some embodiments, the CSI reference resource for reporting CSI in uplink time slot n' is determined according to the first offset value, downlink time slot n, and n _{CSI_ref} , wherein n' has an association with n, and n _{CSI_ref} The value of depends on the type of CSI report.

If the terminal device determines that the CSI reference resource corresponds to a valid downlink time slot, then the terminal device reports CSI in the uplink time slot n', in other words, the terminal device expects that the CSI reference resource determined according to the first offset value and n _{CSI_ref} corresponds to Valid downlink time slot.

If the terminal device determines that the CSI reference resource does not correspond to a valid downlink time slot, then the terminal device ignores reporting CSI in the uplink time slot n', in other words, the terminal device does not expect the CSI reference determined according to the first offset value and n _{CSI_ref} The resource does not correspond to a valid downlink time slot.

Optionally, the first offset value is determined according to at least one of the following: terminal device-specific target offset value, public target offset value, downlink subcarrier spacing configuration, uplink subcarrier spacing configuration, high-level configuration parameter ca -SlotOffset.

Optionally, the first offset value is determined according to a terminal device-specific offset value configured by the network device.

Optionally, the first offset value is determined according to a public offset value configured by the network device.

For ease of understanding, the following describes the communication method in the embodiment of the present application by taking the process of sending the first CSI as an example with reference to FIG. 10 . It should be noted that two situations of sending the first CSI are shown in FIG. 10 , and the following two situations will be introduced separately. In addition, for the convenience of description, the time slots and symbols are numbered from 0 in the embodiment of the present application.

Referring to Fig. 10, in case 1, assuming that the first offset value K _offset,1 is 13 time slots, and the CSI reference resource offset value n _CSI-ref1 is 1 time slot, based on the TA adjustment of the terminal device, the first The CSI needs to be sent on the uplink time slot n'+16, and the uplink time slot n' corresponds to the downlink time slot n. At this time, the CSI reference resource associated with the first CSI is time slot nK _offset,1 -n _CSI-ref1 = time slot n+2, and the downlink time slot where time slot n+2 is idle can be used as a CSI reference resource, therefore, The terminal device may send the first CSI.

In case 2, assuming that the first offset value K _{offset, 1} is 10 time slots, and the CSI reference resource offset value n _CSI-ref2 is 4 time slots, the first CSI needs to be in the uplink after adjustment based on the TA of the terminal device. Sent on time slot n'+22, and uplink time slot n' corresponds to downlink time slot n. At this time, the CSI reference resource associated with the first CSI is time slot nK _{offset, 1} -n _CSI-ref2 = time slot n+8, but downlink time slot n+8 is occupied by other downlink data and cannot be used as a CSI reference resource, or That is, the CSI reference resource associated with the first CSI is not a valid downlink time slot, therefore, the terminal device may not send the first CSI.

It should be noted that when the method embodiments of the present application are introduced above in conjunction with Fig. 5 to Fig. 10, the introduction is based on the "first offset value". For the same value, the "first offset value" may also be a different value, which is not limited in this embodiment of the present application.

The method embodiment of the present application is described in detail above with reference to FIG. 1 to FIG. 10 , and the device embodiment of the present application is described in detail below in conjunction with FIG. 11 to FIG. 13 . It should be understood that the descriptions of the method embodiments correspond to the descriptions of the device embodiments, therefore, for parts not described in detail, reference may be made to the foregoing method embodiments.

FIG. 11 is a schematic diagram of a terminal device according to an embodiment of the present application. The terminal device 1100 shown in FIG. 11 includes a receiving unit 1110 and a processing unit 1120 .

a receiving unit 1110, configured to receive a first physical shared channel;

The processing unit 1120 is configured to determine a first feedback channel according to the first offset value and the first HARQ feedback timing, where the first feedback channel is used to carry feedback information corresponding to the first physical shared channel;

The processing unit 1120 is further configured to determine whether to send or not to send the first feedback channel.

In some optional implementation manners, the processing unit is further configured to: if the starting position of the first time domain unit of the first feedback channel is not earlier than the starting position of the second time domain unit, determine to send the the first feedback channel; and/or, if the starting position of the first time domain unit of the first feedback channel is earlier than the starting position of the second time domain unit, determine not to send the first feedback channel ; Wherein, the second time domain unit is determined based on the time domain resource for transmitting the first physical shared channel and the first processing time length.

In some optional implementation manners, the processing unit is further configured to determine to send the first feedback channel, where the starting position of the first time domain unit of the first feedback channel is no earlier than the second time domain unit The starting position of the unit, the second time domain unit is determined based on the time domain resource for transmitting the first physical shared channel and the first processing time length.

In some optional implementation manners, the second time domain unit is determined based on the time domain resource for transmitting the first physical shared channel and the first processing time length, including: the second time domain unit is a cycle The start position of the prefix CP is later than the next uplink symbol after the first processing time length after the end position of receiving the last symbol of the first physical shared channel.

In some optional implementation manners, the first time domain unit of the first feedback channel is the first symbol of the first feedback channel adjusted based on the timing advance TA of the terminal device.

In some optional implementation manners, the first offset value is determined according to at least one of a dedicated offset value of the terminal device, a downlink subcarrier spacing configuration, and an uplink subcarrier spacing configuration.

In some optional implementation manners, the first offset value is determined according to at least one of the common offset value, downlink subcarrier spacing configuration, and uplink subcarrier spacing configuration.

In some optional implementation manners, the downlink subcarrier spacing configuration includes a subcarrier spacing configuration corresponding to the first physical shared channel, and/or, the first physical control channel scheduling the first physical shared channel corresponds to and/or, the uplink subcarrier spacing configuration includes a subcarrier spacing configuration corresponding to the first feedback channel.

Fig. 12 is a schematic diagram of a terminal device according to another embodiment of the present application. The terminal device 1200 shown in FIG. 12 includes a receiving unit 1210 and a processing unit 1220 .

A receiving unit 1210, configured to receive first control information, where the first control information is used to schedule a first physical shared channel;

A processing unit 1220, configured to determine the first physical shared channel according to the first offset value and the time slot offset value;

The processing unit 1220 is further configured to determine whether to send or not to send the first physical shared channel.

In some optional implementation manners, the processing unit is further configured to: if the starting position of the first time domain unit of the first physical shared channel is not earlier than the starting position of the third time domain unit, determine to send the first physical shared channel; and/or, if the starting position of the first time domain unit of the first physical shared channel is earlier than the starting position of the third time domain unit, it is determined not to send the first time domain unit A physical shared channel; wherein, the third time domain unit is determined based on time domain resources for transmitting the first physical shared channel and a second processing time length.

In some optional implementation manners, the processing unit is further configured to determine to send the first physical shared channel, and the starting position of the first time domain unit of the first physical shared channel is not earlier than the third hour A starting position of a domain unit, the third time domain unit is determined based on the time domain resource for transmitting the first physical shared channel and the second processing time length.

In some optional implementation manners, the third time domain unit is determined based on the time domain resource for transmitting the first physical shared channel and the second processing time length, including: the third time domain unit is a cycle The starting position of the prefix CP is later than the next uplink symbol after the second processing time length after the receiving end position of the last symbol of the physical control channel carrying the first control information.

In some optional implementation manners, the first time domain unit of the first physical shared channel is the first uplink symbol of the first physical shared channel adjusted based on the timing advance TA of the terminal device.

In some optional implementation manners, the first offset value is determined according to at least one of a dedicated offset value of the terminal device, a downlink subcarrier spacing, and an uplink subcarrier spacing.

In some optional implementation manners, the first offset value is determined according to at least one of the common offset value, downlink subcarrier spacing, and uplink subcarrier spacing.

In some optional implementation manners, the downlink subcarrier spacing configuration includes a subcarrier spacing configuration corresponding to the first control information; and/or, the uplink subcarrier spacing configuration includes a subcarrier spacing configuration corresponding to the first physical shared channel. The subcarrier spacing configuration of .

Fig. 13 is a schematic diagram of a terminal device according to another embodiment of the present application. The terminal device 1300 shown in FIG. 13 includes a processing unit 1310 .

The processing unit 1310 is configured to determine a first CSI reference resource according to the first offset value and the channel state information CSI reference resource offset value;

The processing unit 1310 is further configured to determine to send or not to send the first CSI associated with the first CSI reference resource based on the first CSI reference resource.

In some optional implementation manners, the processing unit is further configured to send the first CSI if the time domain position of the first CSI reference resource corresponds to a valid downlink time domain unit; and/or, if the The time domain position of the first CSI reference resource does not correspond to a valid downlink time domain unit, and the first CSI is not sent.

In some optional implementation manners, the first offset value is based on the specific offset value of the terminal device, the downlink subcarrier spacing configuration, the uplink subcarrier spacing configuration, and the carrier aggregation CA time slot offset value. At least one is certain.

In some optional implementation manners, the first offset value is determined according to at least one of the common offset value, downlink subcarrier spacing configuration, uplink subcarrier spacing configuration, and CA slot offset value .

In some optional implementation manners, the downlink subcarrier spacing configuration includes a subcarrier spacing configuration corresponding to the first CSI reference resource; and/or, the uplink subcarrier spacing configuration includes a subcarrier spacing configuration corresponding to the first CSI reference resource. Subcarrier spacing configuration.

In some optional implementation manners, the time domain resource for transmitting the first CSI is adjusted based on the timing advance TA of the terminal device.

Fig. 14 is a schematic structural diagram of a communication device according to an embodiment of the present application. The dashed line in Figure 14 indicates that the unit or module is optional. The apparatus 1400 may be used to implement the methods described in the foregoing method embodiments. Apparatus 1400 may be a chip, a terminal device or a network device.

Apparatus 1400 may include one or more processors 1410 . The processor 1410 may support the apparatus 1400 to implement the methods described in the foregoing method embodiments. The processor 1410 may be a general purpose processor or a special purpose processor. For example, the processor may be a central processing unit (central processing unit, CPU). Alternatively, the processor can also be other general-purpose processors, digital signal processors (digital signal processors, DSPs), application specific integrated circuits (application specific integrated circuits, ASICs), off-the-shelf programmable gate arrays (field programmable gate arrays, FPGAs) Or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, and the like.

Apparatus 1400 may also include one or more memories 1420 . A program is stored in the memory 1420, and the program can be executed by the processor 1410, so that the processor 1410 executes the methods described in the foregoing method embodiments. The memory 1420 may be independent from the processor 1410 or may be integrated in the processor 1410 .

Apparatus 1400 may also include a transceiver 1430 . The processor 1410 can communicate with other devices or chips through the transceiver 1430 . For example, the processor 1410 may send and receive data with other devices or chips through the transceiver 1430 .

The embodiment of the present application also provides a computer-readable storage medium for storing programs. The computer-readable storage medium can be applied to the terminal or the network device provided in the embodiments of the present application, and the program enables the computer to execute the methods performed by the terminal or the network device in the various embodiments of the present application.

The embodiment of the present application also provides a computer program product. The computer program product includes programs. The computer program product can be applied to the terminal or the network device provided in the embodiments of the present application, and the program causes the computer to execute the methods performed by the terminal or the network device in the various embodiments of the present application.

The embodiment of the present application also provides a computer program. The computer program can be applied to the terminal or the network device provided in the embodiments of the present application, and the computer program enables the computer to execute the methods performed by the terminal or the network device in the various embodiments of the present application.

It should be understood that the terms "system" and "network" may be used interchangeably in this application. In addition, the terms used in the application are only used to explain the specific embodiments of the application, and are not intended to limit the application. The terms "first", "second", "third" and "fourth" in the specification and claims of the present application and the drawings are used to distinguish different objects, rather than to describe a specific order . Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present application, the "indication" mentioned may be a direct indication, may also be an indirect indication, and may also mean that there is 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 indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.

In this embodiment of the application, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B according to A does not mean determining B only according to A, and B may also be determined according to A and/or other information.

In this embodiment of the application, the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or that there is an association between the two, or that it indicates and is instructed, configures and is configured, etc. relation.

In this embodiment of the application, "predefined" or "preconfigured" can be realized by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in devices (for example, including terminal devices and network devices). The application does not limit its specific implementation. For example, pre-defined may refer to defined in the protocol.

In the embodiment of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, may include the LTE protocol, the NR protocol, and related protocols applied to future communication systems, which is not limited in the present application.

The term "and/or" in the embodiment of the present application is only an association relationship describing associated objects, which means that there may be three relationships, for example, A and/or B, which can mean: A exists alone, and A and B exist at the same time , there are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

In various embodiments of the present application, the serial numbers of the above-mentioned processes do not mean the order of execution, and the execution order of each process should be determined by its functions and internal logic, rather than the implementation process of the embodiments of the present application. constitute any limitation.

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

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

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

In the above embodiments, all or part of them may be implemented by software, hardware, firmware or any combination thereof. When implemented using software, it may 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 the computer, the processes or functions according to the embodiments of the present application will be 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 may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server or data center Transmission to another website site, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be read by a computer, or a data storage device such as a server or a data center integrated with one or more available media. The available medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a digital versatile disc (digital video disc, DVD)) or a semiconductor medium (for example, a solid state disk (solid state disk, SSD) )wait.

The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be determined by the protection scope of the claims.

Claims (50)

A communication method, characterized in that, comprising: The terminal device receives the first physical shared channel; The terminal device determines a first feedback channel according to the first offset value and the first HARQ feedback timing, and the first feedback channel is used to carry feedback information corresponding to the first physical shared channel; The terminal device determines to send or not to send the first feedback channel. The method according to claim 1, wherein the terminal device determines whether to send or not to send the first feedback channel, comprising: If the starting position of the first time domain unit of the first feedback channel is not earlier than the starting position of the second time domain unit, the terminal device determines to send the first feedback channel; and/or, If the starting position of the first time domain unit of the first feedback channel is earlier than the starting position of the second time domain unit, the terminal device determines not to send the first feedback channel; Wherein, the second time domain unit is determined based on the time domain resource for transmitting the first physical shared channel and the first processing time length. The method according to claim 1, wherein the terminal device determines whether to send or not to send the first feedback channel, comprising: The terminal device determines to send the first feedback channel, where the starting position of the first time domain unit of the first feedback channel is not earlier than the starting position of the second time domain unit, and the second time domain unit The unit is determined based on the time domain resource for transmitting the first physical shared channel and the first processing time length. The method according to claim 2 or 3, wherein the second time domain unit is determined based on the time domain resource for transmitting the first physical shared channel and the first processing time length, comprising: The second time domain unit is the next uplink symbol after the first processing time length after the start position of the cyclic prefix CP is later than the end position of the last symbol reception of the first physical shared channel. The method according to any one of claims 2-4, wherein the first time domain unit of the first feedback channel is the first feedback adjusted based on the timing advance TA of the terminal device. The first symbol of the channel. The method according to any one of claims 1-5, wherein the first offset value is based on the specific offset value of the terminal device, the downlink subcarrier spacing configuration, and the uplink subcarrier spacing configuration. At least one of the identified. The method according to any one of claims 1-5, wherein the first offset value is based on at least one of the common offset value, downlink subcarrier spacing configuration, and uplink subcarrier spacing configuration item is determined. The method according to claim 6 or 7, wherein the downlink subcarrier spacing configuration includes a subcarrier spacing configuration corresponding to the first physical shared channel, and/or, scheduling the first physical shared channel The subcarrier spacing configuration corresponding to the first physical control channel; and/or, The uplink subcarrier spacing configuration includes a subcarrier spacing configuration corresponding to the first feedback channel. A communication method, characterized in that, comprising: The terminal device receives first control information, where the first control information is used to schedule a first physical shared channel; The terminal device determines the first physical shared channel according to the first offset value and the time slot offset value; The terminal device determines to send or not to send the first physical shared channel. The method according to claim 9, wherein the terminal device determines whether to send or not to send the first physical shared channel, comprising: If the starting position of the first time domain unit of the first physical shared channel is not earlier than the starting position of the third time domain unit, the terminal device determines to send the first physical shared channel; and/or, If the starting position of the first time domain unit of the first physical shared channel is earlier than the starting position of the third time domain unit, the terminal device determines not to send the first physical shared channel; Wherein, the third time domain unit is determined based on the time domain resource for transmitting the first physical shared channel and the second processing time length. The method according to claim 9, wherein the terminal device determines whether to send or not to send the first physical shared channel, comprising: The terminal device determines to send the first physical shared channel, the starting position of the first time domain unit of the first physical shared channel is not earlier than the starting position of the third time domain unit, and the third time domain unit The unit is determined based on the time domain resource for transmitting the first physical shared channel and the second processing time length. The method according to claim 10 or 11, wherein the third time domain unit is determined based on the time domain resource for transmitting the first physical shared channel and the second processing time length, comprising: The third time domain unit is the next uplink after the second processing time length after the start position of the cyclic prefix CP is later than the end position of the last symbol reception of the physical control channel carrying the first control information symbol. The method according to any one of claims 10-12, wherein the first time domain unit of the first physical shared channel is the first time domain unit adjusted based on the timing advance TA of the terminal device. The first uplink symbol of the physical shared channel. The method according to any one of claims 9-13, wherein the first offset value is based on at least one of the dedicated offset value of the terminal equipment, downlink subcarrier spacing and uplink subcarrier spacing One sure thing. The method according to any one of claims 9-13, wherein the first offset value is determined according to at least one of the common offset value, downlink subcarrier spacing and uplink subcarrier spacing of. The method according to claim 14 or 15, wherein the downlink subcarrier spacing configuration includes a subcarrier spacing configuration corresponding to the first control information; and/or, The uplink subcarrier spacing configuration includes a subcarrier spacing configuration corresponding to the first physical shared channel. A communication method, characterized in that, comprising: The terminal device determines the first CSI reference resource according to the first offset value and the channel state information CSI reference resource offset value; The terminal device determines to send or not to send the first CSI associated with the first CSI reference resource based on the first CSI reference resource. The method according to claim 17, wherein the terminal device determines to send or not to send the first CSI associated with the first CSI reference resource based on the first CSI reference resource, comprising: If the time domain position of the first CSI reference resource corresponds to a valid downlink time domain unit, the terminal device sends the first CSI; and/or, If the time domain position of the first CSI reference resource does not correspond to a valid downlink time domain unit, the terminal device does not send the first CSI. The method according to claim 18, wherein the first offset value is based on the dedicated offset value of the terminal equipment, downlink subcarrier spacing configuration, uplink subcarrier spacing configuration and carrier aggregation CA time slot offset At least one of the shift values is determined. The method according to claim 18, wherein the first offset value is based on at least one of the common offset value, downlink subcarrier spacing configuration, uplink subcarrier spacing configuration, and CA time slot offset value One sure thing. The method according to claim 19 or 20, wherein the downlink subcarrier spacing configuration includes a subcarrier spacing configuration corresponding to the first CSI reference resource; and/or The uplink subcarrier spacing configuration includes a subcarrier spacing configuration corresponding to the first CSI. The method according to any one of claims 17-21, wherein the time domain resources for transmitting the first CSI are adjusted based on the timing advance TA of the terminal device. A terminal device, characterized in that it includes: a receiving unit, configured to receive a first physical shared channel; A processing unit, configured to determine a first feedback channel according to the first offset value and the first HARQ feedback timing, where the first feedback channel is used to carry feedback information corresponding to the first physical shared channel; The processing unit is further configured to determine whether to send or not to send the first feedback channel. The terminal device according to claim 23, wherein the processing unit is further configured to: If the starting position of the first time domain unit of the first feedback channel is not earlier than the starting position of the second time domain unit, determine to send the first feedback channel; and/or, If the starting position of the first time domain unit of the first feedback channel is earlier than the starting position of the second time domain unit, determine not to send the first feedback channel; Wherein, the second time domain unit is determined based on the time domain resource for transmitting the first physical shared channel and the first processing time length. The terminal device according to claim 23, wherein the processing unit is further configured to: determining to send the first feedback channel, wherein the start position of the first time domain unit of the first feedback channel is not earlier than the start position of the second time domain unit, the second time domain unit is based on transmission The time domain resource and the first processing time length of the first physical shared channel are determined. The terminal device according to claim 24 or 25, wherein the second time domain unit is determined based on the time domain resource for transmitting the first physical shared channel and the first processing time length, including: The second time domain unit is the next uplink symbol after the first processing time length after the start position of the cyclic prefix CP is later than the end position of the last symbol reception of the first physical shared channel. The terminal device according to any one of claims 24-26, wherein the first time domain unit of the first feedback channel is the first time domain unit adjusted based on the timing advance TA of the terminal device. The first symbol of the feedback channel. The terminal device according to any one of claims 23-27, wherein the first offset value is based on the terminal device's dedicated offset value, downlink subcarrier spacing configuration, and uplink subcarrier spacing configuration At least one of them is determined. The terminal device according to any one of claims 23-27, wherein the first offset value is based on at least one of the common offset value, downlink subcarrier spacing configuration, and uplink subcarrier spacing configuration One sure thing. The terminal device according to claim 28 or 29, wherein the downlink subcarrier spacing configuration includes a subcarrier spacing configuration corresponding to the first physical shared channel, and/or scheduling the first physical shared channel The subcarrier spacing configuration corresponding to the first physical control channel; and/or, The uplink subcarrier spacing configuration includes a subcarrier spacing configuration corresponding to the first feedback channel. A terminal device, characterized in that it includes: a receiving unit, configured to receive first control information, where the first control information is used to schedule a first physical shared channel; a processing unit, configured to determine the first physical shared channel according to the first offset value and the time slot offset value; The processing unit is further configured to determine whether to send or not to send the first physical shared channel. The terminal device according to claim 31, wherein the processing unit is further configured to: If the starting position of the first time domain unit of the first physical shared channel is not earlier than the starting position of the third time domain unit, determine to send the first physical shared channel; and/or, If the starting position of the first time domain unit of the first physical shared channel is earlier than the starting position of the third time domain unit, determine not to send the first physical shared channel; Wherein, the third time domain unit is determined based on the time domain resource for transmitting the first physical shared channel and the second processing time length. The terminal device according to claim 31, wherein the processing unit is further configured to: determining to send the first physical shared channel, the starting position of the first time domain unit of the first physical shared channel is not earlier than the starting position of the third time domain unit, and the third time domain unit is based on transmission The time domain resources of the first physical shared channel and the second processing time length are determined. The terminal device according to claim 32 or 33, wherein the third time domain unit is determined based on the time domain resource for transmitting the first physical shared channel and the second processing time length, including: The third time domain unit is the next uplink after the second processing time length after the start position of the cyclic prefix CP is later than the end position of the last symbol reception of the physical control channel carrying the first control information symbol. The terminal device according to any one of claims 32-34, wherein the first time domain unit of the first physical shared channel is the first time domain unit adjusted based on the timing advance TA of the terminal device. The first uplink symbol of a physical shared channel. The terminal device according to any one of claims 31-35, wherein the first offset value is based on the specific offset value of the terminal device, the downlink subcarrier spacing and the uplink subcarrier spacing At least one is certain. The terminal device according to any one of claims 31-35, wherein the first offset value is based on at least one of the common offset value, downlink subcarrier spacing, and uplink subcarrier spacing definite. The terminal device according to claim 36 or 37, wherein the downlink subcarrier spacing configuration includes a subcarrier spacing configuration corresponding to the first control information; and/or, The uplink subcarrier spacing configuration includes a subcarrier spacing configuration corresponding to the first physical shared channel. A terminal device, characterized in that it includes: A processing unit, configured to determine a first CSI reference resource according to the first offset value and the channel state information CSI reference resource offset value; The processing unit is further configured to determine to send or not to send the first CSI associated with the first CSI reference resource based on the first CSI reference resource. The terminal device according to claim 39, wherein the processing unit is further configured to: If the time domain position of the first CSI reference resource corresponds to a valid downlink time domain unit, sending the first CSI; and/or, If the time domain position of the first CSI reference resource does not correspond to a valid downlink time domain unit, the first CSI is not sent. The terminal device according to claim 40, wherein the first offset value is based on the dedicated offset value of the terminal device, downlink subcarrier spacing configuration, uplink subcarrier spacing configuration, and carrier aggregation CA time slot At least one of the offset values is determined. The terminal device according to claim 40, wherein the first offset value is based on the public offset value, the downlink subcarrier spacing configuration, the uplink subcarrier spacing configuration, and the CA time slot offset value At least one is certain. The terminal device according to claim 41 or 42, wherein the downlink subcarrier spacing configuration includes a subcarrier spacing configuration corresponding to the first CSI reference resource; and/or The uplink subcarrier spacing configuration includes a subcarrier spacing configuration corresponding to the first CSI. The terminal device according to any one of claims 39-43, wherein the time domain resource for transmitting the first CSI is adjusted based on the timing advance TA of the terminal device. A terminal device, characterized in that it includes a memory and a processor, the memory is used to store programs, and the processor is used to call the programs in the memory to execute the program described in any one of claims 1-22. Methods. An apparatus, characterized by comprising a processor for calling a program from a memory to execute the method according to any one of claims 1-22. A chip, characterized by comprising a processor, configured to call a program from a memory, so that a device installed with the chip executes the method according to any one of claims 1-22. A computer-readable storage medium, characterized in that a program is stored thereon, and the program causes a computer to execute the method according to any one of claims 1-22. A computer program product, characterized by comprising a program, the program causes a computer to execute the method according to any one of claims 1-22. A computer program, characterized in that the computer program causes a computer to execute the method according to any one of claims 1-22.

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