Method for wireless communication and terminal device

Abstract

Provided are a method for wireless communication and a terminal device. The method comprises: in response to a terminal device starting a global navigation satellite system (GNSS) measurement, the terminal device performs a first operation, wherein the first operation comprises one or more of the following: releasing resources configured by a network device for the terminal device; and stopping using the exclusive offset parameter of the terminal device or clearing same.

Description

Method and terminal device for wireless communication Technical Field

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

[0002] Terminal devices can obtain their own location information through global navigation satellite system (GNSS) measurements. However, performing GNSS measurements on a terminal device can lead to some problems. For example, the terminal device cannot communicate during the GNSS measurement process, thereby occupying the dedicated transmission resources allocated by the network, which is not conducive to efficient resource utilization.

[0003] Summary of the Invention

[0004] The present application provides a method and terminal device for wireless communication. The following introduces various aspects of the present application.

[0005] In a first aspect, a method for wireless communication is provided, comprising: in response to a terminal device initiating a global navigation satellite system GNSS measurement, the terminal device performs a first operation; wherein the first operation includes one or more of the following: releasing resources configured by a network device for the terminal device; and stopping use or clearing exclusive offset parameters of the terminal device.

[0006] In a second aspect, a method for wireless communication is provided, including: when a second condition is met, the terminal device triggers reporting of a timing advance TA parameter; the second condition is associated with one or more of the following: the moment when the terminal device completes the global navigation satellite system GNSS measurement; the switching of the service cell of the terminal device; and the switching of the service satellite of the terminal device.

[0007] According to a third aspect, a terminal device is provided, comprising: an execution unit for executing a first operation in response to the terminal device initiating a global navigation satellite system GNSS measurement; wherein the first operation comprises one or more of the following: releasing resources configured by a network device for the terminal device; and stopping use or clearing exclusive offset parameters of the terminal device.

[0008] In a fourth aspect, a terminal device is provided, including: a reporting unit, configured to trigger the reporting of timing advance TA parameters by the terminal device when a second condition is met; the second condition is associated with one or more of the following: the moment when the terminal device completes the global navigation satellite system GNSS measurement; the switching of the service cell of the terminal device; and the switching of the service satellite of the terminal device.

[0009] In a fifth aspect, a terminal device is provided, comprising a processor, a memory, and a communication interface, wherein the memory is used to store one or more computer programs, and the processor is used to call the computer program in the memory so that the terminal device executes part or all of the steps in the method of the first aspect or the second aspect.

[0010] In a sixth aspect, an embodiment of the present application provides a communication system, which includes the above-mentioned terminal device. In another possible design, the system may also include other devices that interact with the terminal device in the solution provided in the embodiment of the present application.

[0011] In a seventh aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program, and the computer program enables the terminal to execute part or all of the steps in the method of the first aspect or the second aspect above.

[0012] In an eighth aspect, embodiments of the present application provide a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, wherein the computer program is operable to cause a terminal to perform some or all of the steps of the method of the first or second aspect described above. In some implementations, the computer program product may be a software installation package.

[0013] In a ninth aspect, a computer program is provided, wherein the computer program enables a computer to execute the method as described in any one of the first aspect or the second aspect.

[0014] In the tenth aspect, an embodiment of the present application provides a chip comprising a memory and a processor, wherein the processor can call and run a computer program from the memory to implement some or all of the steps described in the method of the first or second aspect above.

[0015] The embodiment of the present application helps to improve resource utilization efficiency and avoid the impact of the terminal device's exclusive offset parameters being too small on uplink communications by releasing the resources configured by the network device for the terminal device and / or stopping using the terminal device's exclusive offset parameters (i.e., performing the first operation) when the terminal device performs GNSS measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] FIG1A is an example diagram of a communication scenario to which an embodiment of the present application can be applied.

[0017] FIG1B is an example diagram of another communication scenario to which embodiments of the present application may be applied.

[0018] FIG1C is an example diagram of another communication scenario to which the embodiments of the present application can be applied.

[0019] FIG2 is an example diagram of another communication scenario to which the embodiments of the present application can be applied.

[0020] FIG3 is an example diagram of another communication scenario to which the embodiments of the present application can be applied.

[0021] FIG4 is an example diagram of another communication scenario to which the embodiments of the present application can be applied.

[0022] FIG5A is a diagram illustrating an example of the time delay of an uplink signal reaching a network device.

[0023] FIG5B is another example diagram showing the time delay of an uplink signal reaching a network device.

[0024] FIG. 6A is a diagram illustrating an example of timing relationships in a non-terrestrial network.

[0025] FIG. 6B is another example diagram of timing relationships in a non-terrestrial network.

[0026] FIG7 is a flow chart of a wireless communication method provided in one embodiment of the present application.

[0027] FIG8 is a flow chart of a wireless communication method provided in another embodiment of the present application.

[0028] FIG9 is a schematic diagram of the structure of a terminal device provided in one embodiment of the present application.

[0029] FIG10 is a schematic structural diagram of a terminal device provided in another embodiment of the present application.

[0030] FIG11 is a schematic structural diagram of a device to which an embodiment of the present application can be applied. DETAILED DESCRIPTION

[0031] The technical solution in this application will be described below with reference to the accompanying drawings.

[0032] Communication system architecture

[0033] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: global system of mobile communication (GSM) system, code division multiple access (CDMA) system, wideband code division multiple access (WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, advanced long term evolution (LTE-A) system, new radio (NR) system, evolution system of NR system, LTE-based access to unlicensed spectrum (LTE-U) system, NR-based access to unlicensed spectrum (NR-U) system, non-terrestrial network (NTN) system, universal mobile telecommunication system (UMTS), wireless local area networks (WLAN), wireless fidelity (WLAN), etc. fidelity, WiFi), fifth-generation communication (5G) systems or other communication systems, such as future communication systems, such as sixth-generation mobile communication systems, and satellite communication systems.

[0034] Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communications, but will also support, for example, device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), vehicle-to-vehicle (V2V) communication, or vehicle-to-everything (V2X) communication, and the embodiments of the present application can also be applied to these communication systems.

[0035] The communication system in the embodiment of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, and a standalone (SA) networking scenario.

[0036] The communication system in the embodiment of the present application can be applied to an unlicensed spectrum, where the unlicensed spectrum can also be considered as a shared spectrum; or, the communication system in the embodiment of the present application can also be applied to an authorized spectrum, where the authorized spectrum can also be considered as a dedicated spectrum.

[0037] The embodiments of the present application can be applied to NTN systems as well as terrestrial networks (TN) systems. By way of example and not limitation, NTN systems include NR-based NTN systems and Internet of Things (IoT)-based NTN systems.

[0038] The embodiments of the present application describe various embodiments in conjunction with network devices and terminal devices, where the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

[0039] In an embodiment of the present application, the terminal device may be a station (STATION, ST) in a WLAN, a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a next-generation communication system such as a terminal device in an NR network, or a terminal device in a future-evolved public land mobile network (PLMN) network, etc.

[0040] In an embodiment of the present application, a terminal device may be a device that provides voice and / or data connectivity to a user and can be used to connect people, objects, and machines, such as a handheld device with wireless connection capabilities, an in-vehicle device, etc. The terminal device in the embodiment of the present application may be a mobile phone, a tablet computer, a laptop computer, a PDA, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. Optionally, the terminal device can be used to act as a base station. For example, the terminal device can act as a scheduling entity that provides sidelink signals between terminal devices in V2X or D2D, etc. For example, a cellular phone and a car communicate with each other using sidelink signals. Cellular phones and smart home devices communicate with each other without relaying the communication signal through a base station.

[0041] In an embodiment of the present application, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons and satellites, etc.).

[0042] In the embodiments of the present application, the terminal device may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc. The terminal device involved in the embodiments of the present application may also be referred to as a terminal, user equipment (UE), an access terminal device, a vehicle-mounted terminal, an industrial control terminal, a UE unit, a UE station, a mobile station, a mobile station, a remote station, a remote terminal device, a mobile device, a UE, a wireless communication device, a UE agent, or a UE device, etc. The terminal device may also be fixed or mobile.

[0043] As an example and not a limitation, in the embodiment of the present application, the terminal device may also be a wearable device. Wearable devices may also be called wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are fully functional, large in size, and can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0044] The network device in the embodiments of the present application may be a device for communicating with a terminal device, and may also be referred to as an access network device or a radio access network device. For example, the network device may be a base station. The network device in the embodiments of the present application may refer to a radio access network (RAN) node (or device) that connects a terminal device to a wireless network. A base station may broadly cover various names as follows, or be replaced with the following names, such as: NodeB, evolved NodeB (eNB), next generation NodeB (gNB), relay station, access point, transmitting and receiving point (TRP), transmitting point (TP), master station MeNB, secondary station SeNB, multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, 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. The base station may also refer to a communication module, modem or chip provided in the aforementioned device or apparatus. The base station may also be a mobile switching center and a device-to-device D2D, vehicle-to-everything (V2X), machine-to-machine (M2M) communication device that performs the base station function, a network side device in a 6G network, a device that performs the base station function in a future communication system, etc. The base station may support networks with the same or different access technologies. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network equipment.

[0045] 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 based on the location of the mobile base station. In other examples, a helicopter or drone can be configured to act as a device that communicates with another base station.

[0046] In some deployments, the network device in the embodiments of the present application may refer to a CU or a DU, or the network device may include a CU and a DU. The gNB may also include an AAU.

[0047] The network equipment and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed in the air on aircraft, balloons, and satellites. The embodiments of this application do not limit the scenarios in which the network equipment and terminal devices are located.

[0048] As an example and not a limitation, in an embodiment of the present application, a network device may have a mobile feature, for example, the network device may be a mobile device. In some embodiments of the present application, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. In some embodiments of the present application, the network device may also be a base station set up in a location such as land or water.

[0049] In an embodiment of the present application, the network device can provide services for a cell, and the terminal device communicates with the network device through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources). The cell can be a cell corresponding to the network device (for example, a base station). The cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0050] For example, Figure 1A is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application. As shown in Figure 1A, the communication system 100 may include a network device 110, which may be a device that communicates with a terminal device 120 (or also referred to as a communication terminal or terminal). The network device 110 may provide communication coverage for a specific geographic area and may communicate with terminal devices located within the coverage area.

[0051] Figure 1A exemplarily shows a network device and two terminal devices. In some embodiments of the present application, the communication system 100 may include multiple network devices and each network device may include other number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0052] For example, FIG1B is a schematic diagram of the architecture of another communication system provided in an embodiment of the present application. Referring to FIG1B , a terminal device 1101 and a satellite 1102 are included, and wireless communication can be performed between the terminal device 1101 and the satellite 1102. The network formed between the terminal device 1101 and the satellite 1102 can also be referred to as an NTN. In the architecture of the communication system shown in FIG1B , the satellite 1102 can have the function of a base station, and the terminal device 1101 and the satellite 1102 can communicate directly. In the system architecture, the satellite 1102 can be referred to as a network device. In some embodiments of the present application, the communication system may include multiple network devices 1102, and each network device 1102 may include other numbers of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0053] For example, FIG1C is a schematic diagram of the architecture of another communication system provided in an embodiment of the present application. Referring to FIG1C , it includes a terminal device 1201, a satellite 1202, and a base station 1203. Wireless communication can be performed between the terminal device 1201 and the satellite 1202, and communication can be performed between the satellite 1202 and the base station 1203. The network formed between the terminal device 1201, the satellite 1202, and the base station 1203 can also be referred to as an NTN. In the architecture of the communication system shown in FIG1C , the satellite 1202 may not have the function of a base station, and the communication between the terminal device 1201 and the base station 1203 needs to be transferred through the satellite 1202. In this system architecture, the base station 1203 can be referred to as a network device. In some embodiments of the present application, a plurality of network devices 1203 may be included in the communication system, and each network device 1203 may include other number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0054] It should be noted that Figures 1A-1C are only examples of the system to which this application is applicable. Of course, the method shown in the embodiment of this application can also be applied to other systems, such as 5G communication systems, LTE communication systems, etc., and the embodiment of this application does not make specific limitations on this.

[0055] In some embodiments of the present application, the wireless communication system shown in Figures 1A-1C may also include other network entities such as a mobility management entity (MME) and an access and mobility management function (AMF), but the embodiments of the present application are not limited to this.

[0056] It should be understood that in the embodiments of the present application, a device having a communication function in a network / system may be referred to as a communication device. Taking the communication system 100 shown in FIG1A as an example, the communication device may include a network device 110 and a terminal device 120 having a communication function. The network device 110 and the terminal device 120 may be the specific devices described above and will not be described in detail here. The communication device may also include other devices in the communication system 100, such as a network controller, a mobility management entity, and other network entities, which are not limited in the embodiments of the present application.

[0057] It should be understood that the "indication" mentioned in the embodiments of this application can be a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B.

[0058] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and being indicated, configuration and being configured, etc.

[0059] The “configuration” in the embodiment of the present application may include configuration through at least one of system messages, radio resource control (RRC) signaling and media access control element (MAC CE).

[0060] In some embodiments of the present application, "predefined" or "preset" may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., a terminal device or a network device). This application does not limit the specific implementation method. For example, predefined may refer to information defined in a protocol.

[0061] In some embodiments of the present application, the "protocol" may refer to a standard protocol in the field of communications, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, and this application does not limit this.

[0062] NTN

[0063] Currently, 3GPP is researching NTN technology. NTN generally uses satellite communications to provide communication services to users on the ground. Compared to terrestrial communication networks (for example, ground cellular networks), satellite communications offer many unique advantages.

[0064] First, satellite communications are not restricted by user geography. For example, conventional terrestrial communication networks cannot cover areas where network equipment cannot be deployed, such as oceans, mountains, and deserts. Similarly, terrestrial communication networks do not cover certain sparsely populated areas. However, because satellite communications can cover a large ground area and orbit the Earth, theoretically, every corner of the Earth can be covered by a satellite communication network.

[0065] Secondly, satellite communications have significant social value. They can provide low-cost coverage to remote, mountainous areas and impoverished countries and regions, enabling people in these areas to enjoy advanced voice communications and mobile internet technologies. From this perspective, satellite communications help narrow the digital divide with developed regions and promote their development.

[0066] Again, satellite communication has the advantage of long distance, and the increase in communication distance does not significantly increase the cost of communication.

[0067] Finally, satellite communications are highly stable and not affected by natural disasters.

[0068] Communication satellites are classified according to their orbital altitude into low Earth orbit (LEO), medium Earth orbit (MEO), geostationary Earth orbit (GEO), and high elliptical orbit (HEO). Currently, research focuses on LEO and GEO satellites.

[0069] LEO satellites typically operate at altitudes between 500 and 1500 km. Accordingly, their orbital period is approximately 1.5 to 2 hours. For LEO satellites, the signal propagation delay for single-hop communication between users is typically less than 20 milliseconds. The maximum satellite visibility time for LEO satellites is approximately 20 minutes. LEO satellites offer advantages such as short signal propagation distances, low link loss, and low transmit power requirements for user devices.

[0070] GEO satellites orbit at an altitude of 35,786 km. They orbit the Earth every 24 hours. For GEO satellites, the signal propagation delay for single-hop communication between users is typically about 250 milliseconds.

[0071] To ensure satellite coverage and increase the capacity of the entire satellite communication system, satellites typically use multiple beams to cover the ground. Therefore, a single satellite can form dozens or even hundreds of beams to cover the ground. A single satellite beam can cover a ground area with a diameter of tens to hundreds of kilometers.

[0072] Currently, the NTN system includes the NR-NTN system and the IoT-NTN system.

[0073] Currently, 3GPP is considering two types of satellites: those with transparent payloads and those with regenerative payloads. The following describes the network architectures for satellites with transparent payloads and those with regenerative payloads, respectively, using Figures 2 through 4.

[0074] In the satellite network architecture shown in Figures 2 to 4, the satellite network architecture may include a terminal device 210, a satellite node 222, and a ground receiving station 221 (referred to as a "ground station"). Wireless communication exists between the terminal device 210 and the satellite node 222. The terminal device 210 can send data to the satellite node 222 via the link between the terminal device 210 and the satellite node 222. For example, data can be sent to the satellite node 222 via a service link. Accordingly, after receiving the data, the satellite node 222 can send the data to the ground receiving station 221 via the link between the satellite node 222 and the ground receiving station 221. For example, the data can be transmitted to the ground receiving station 221 via a wireless link (such as a feeder link). Accordingly, after receiving the data from the satellite node 222, the ground receiving station 221 transmits the data to the core network (data network), which then processes the data via the core network, such as for data exchange with other terminals. It can be understood that the service link here refers to the link between the terminal device 210 and the satellite node 222, and the feeder link refers to the link between the satellite node 222 and the ground receiving station 221. In other possible embodiments, the link between the terminal device and the satellite node, and / or the link between the satellite node and the ground receiving station can also be expressed by other terms, which are not limited in this application.

[0075] The above-mentioned satellite nodes 222 can be divided into three types. The first type of satellite node is only used for forwarding, that is, it only has a transparent forwarding function. In some implementations, such satellite nodes may only provide one or more of a radio frequency filtering function, a frequency conversion function, and a power amplification function. For this type of satellite node, the received terminal device signal is amplified and then sent to the ground receiving station without any processing on the satellite node, as shown in Figure 2; wherein, the terminal device and the satellite node can communicate through the NR-Uu interface, the satellite node and the ground receiving station (such as the NTN remote radio unit (RRU) and gNB) can communicate through the NR-Uu interface, the ground receiving station and the 5G core network (5G CN) can communicate through the N1 / 2 / 3 interface, and the 5G CN and the data network can communicate through the N6 interface.

[0076] The second type of satellite node has complete base station processing functions. The satellite node is a base station for the terminal equipment on the ground. The communication between the satellite node and the terminal equipment is basically the same as normal 5G communication, as shown in Figure 3. In some implementations, such satellite nodes can also provide one or more of the following functions: demodulation function, decoding function, routing function, conversion function, encoding function, and modulation function. Among them, the terminal equipment and the satellite node can communicate through the NR-Uu interface, and the satellite node and the ground receiving station can communicate through the satellite radio interface (SRI). The SRI interface can be used to send interface messages between the satellite node and the 5G CN (such as N2 / N3 interface messages). The ground receiving station and the 5G CN can communicate through the N1 / 2 / 3 interface, and the 5G CN and the data network can communicate through the N6 interface.

[0077] The third type of satellite node has DU processing capabilities. To ground-based terminal devices, the satellite node appears as a DU. Communication between the satellite node and terminal devices is essentially the same as that between terminal devices and DUs in a normal 5G terrestrial communication system, as shown in Figure 4. Terminal devices and satellite nodes can communicate via the NR-Uu interface, while satellite nodes and ground receiving stations (such as gNB-CUs) can communicate via the SRI interface, which transmits F1 interface messages between the satellite and ground receiving stations. Ground receiving stations and 5G CNs can communicate via the N1 / 2 / 3 interfaces, and the 5G CN and data networks can communicate via the N6 interface.

[0078] Timing Advance (TA)

[0079] Wireless communication systems (e.g., LTE / NR systems) can use orthogonal frequency division multiplexing (OFDM) transmission schemes. This is because wireless communication systems can only have good demodulation performance if the subcarriers maintain orthogonality. However, due to the existence of transmission delay, the downlink signal needs to be delayed before it can be received by the terminal device. Due to the different positions of different terminal devices relative to the network equipment, the time when the uplink signals sent by different terminal devices arrive at the network equipment will also be inconsistent, which will seriously affect the orthogonality between the subcarriers and reduce the demodulation performance of the OFDM transmission scheme.

[0080] Taking uplink transmission as an example, a key feature of uplink transmission is orthogonal multiple access (M2A) between different devices in time and frequency. This means that uplink transmissions from different devices in the same cell do not interfere with each other. Uplink transmissions are typically multi-device transmissions, so network equipment may receive signals from multiple devices simultaneously.

[0081] In order to ensure the orthogonality of uplink transmission and avoid intra-cell interference, the network equipment requires that the time when signals from different terminal devices at the same time but different frequency domain resources arrive at the network equipment is basically aligned. The reason why the network equipment requires that the time when signals from different terminal devices at the same time arrive at the network equipment is basically aligned is because as long as the network equipment receives the uplink data sent by the terminal device within the cyclic prefix range, it can correctly decode the uplink data. In addition, in order to maintain the orthogonality between uplink reference signals using different cyclic shifts, the network equipment also requires that the received uplink reference signals must be time-aligned. Therefore, in order to achieve uplink synchronization, or in other words, to ensure time synchronization on the network equipment side, the wireless communication system (for example, LTE / NR system) can support the uplink TA mechanism.

[0082] TA can be understood as a command sent by a network device to a terminal device to adjust the uplink transmission of the terminal device. The embodiment of the present application does not limit the uplink transmission of the terminal device. For example, the uplink transmission may include one or more of the following: physical uplink shared channel (PUSCH), physical uplink control channel (PUCCH), sounding reference signal (SRS), etc.

[0083] In a communication system that supports uplink TA, the uplink and downlink clocks on the network device are identical, while there is an offset between the uplink and downlink clocks on the terminal device. Different terminal devices have different uplink TA values. From the terminal device's perspective, the TA value is essentially the offset between the start time of the downlink frame received by the terminal device and the time it transmits the uplink frame. By appropriately controlling the offset for each terminal device, the network device can ensure that uplink signals from different terminal devices arrive at the network device at nearly the same time. Terminal devices farther from the network device experience greater transmission latency and therefore need to send uplink data earlier than terminal devices closer to the network device.

[0084] Figures 5A and 5B respectively show the time delay of the uplink signal reaching the network device in the absence of TA and the time delay of the uplink signal reaching the network device in the presence of TA. As shown in Figure 5A, in the absence of TA, the time when the uplink signals sent by different terminal devices (for example, terminal devices at different distances from the network device) arrive at the network device is inconsistent, which may cause interference within the cell. After the introduction of TA, referring to Figure 5B, different terminal devices are configured with different uplink TAs, so that the time when the uplink signals sent by different terminal devices arrive at the network device is consistent, which is conducive to avoiding interference within the cell. Taking the different terminal devices shown in Figure 5B as terminal device 1 and terminal device 2 as an example, if terminal device 1 and terminal device 2 receive downlink signals and send uplink signals synchronously, then the uplink signals sent by terminal device 1 and terminal device 2 will be 2T away from the network device respectively. p1 and 2T p2 In other words, if terminal device 1 and terminal device 2 receive downlink signals and send uplink signals synchronously, the TA amounts corresponding to terminal device 1 and terminal device 2 are 2T respectively. p1 and 2T p2 , thereby ensuring that the uplink signals of terminal device 1 and terminal device 2 reach the network device at the same time.

[0085] The network device can determine the TA value of each terminal device by measuring the uplink transmission of the terminal device. The network device can send a TA command to the terminal device to notify the terminal device of its corresponding TA value. For example, the network device can send a TA command to the terminal device in two ways, as follows:

[0086] Method 1: Acquisition of the initial TA: The terminal device can achieve initial uplink synchronization through a random access process. During the random access process, the network device can determine the TA value by measuring the received preamble and send it to the terminal device through the TA command (Timing Advance Command, TAC) field of the random access response (RAR) message. For example, the network device can carry a 12-bit TAC in the RAR message to indicate the initial TA to the terminal device.

[0087] Method 2, adjustment of TA in radio resource control (RRC) connection state: Although the terminal device and the network device have achieved uplink synchronization during the random access process, the timing of the uplink signal reaching the network device may change over time. Therefore, the terminal device needs to continuously update its uplink TA amount to maintain uplink synchronization. If the TA of a terminal device needs to be corrected, the network device can send a TA command to the terminal device, requiring it to adjust the uplink timing. In some implementations, the TA command is sent by the network device to the terminal device through a media access control control element (MAC CE). This MAC CE can also be called a TA command MAC CE (i.e., a MAC CE carrying a TA command). That is, when the terminal device is in the RRC connection state, the terminal device can adjust the uplink transmission according to the MAC CE carrying the TA command.

[0088] In a CA scenario, a terminal device may need to use different TAs for different uplink carriers. Therefore, the standard introduces timing advance groups (TAGs). Network equipment can configure up to four TAGs for each cell group of a terminal device, and a TAG associated with that serving group for each serving cell. In some implementations, the terminal device can maintain a separate TA for each TAG.

[0089] In traditional TN networks, UEs can perform TA maintenance based on TA commands issued by the network. For Rel-17 NTN, assuming that UEs have GNSS positioning capabilities and TA pre-compensation capabilities, the UEs can estimate the TA of the service link based on the UE location and the location of the serving satellite. Therefore, a TA determination method combining open-loop and closed-loop is introduced in NTN. Based on the current R17 standard, for NTN UEs in RRC idle / inactive state (RRC_IDLE / INACTIVE) and RRC connected state (RRC_CONNECTED), the timing advance (TA) is determined by the following formula: T TA =(N TA +N TA,UE-specific +N TA,common +N TA,offset )×T c

[0090] Among them, N TA The PRACH transmission scenario is defined as 0 and can be updated later through the TA command in Msg2 / MsgB and the TA command MAC CE.

[0091] N TA,UE-specific This is the UE's estimated serving link TA, used for TA precompensation. Specifically, the terminal uses its own GNSS position information combined with the satellite ephemeris information broadcast by the serving cell to determine the satellite position, thereby calculating the propagation delay of the serving link from the UE to the satellite.

[0092] N TA,common It is a common TA controlled by the network and contains any timing deviation that the network deems necessary.

[0093] N TA,offset is a fixed offset for calculating TA.

[0094] From the above TA calculation formula, it can be seen that the UE in the RRC connected state needs to obtain the service link TA (i.e. N TA,UE-specific ), on the one hand, it needs to know its own GNSS position information, and on the other hand, it needs to obtain the position of the serving satellite through the serving cell satellite ephemeris information. In addition, in order to calculate the TA of the UE, the UE also needs to obtain the public TA (i.e. N TA,common ).

[0095] Timing relationships in NTN systems

[0096] In terrestrial communication systems, signal propagation delay is typically less than 1ms. In NTN systems, due to the long distances between terminal devices and satellites (or network equipment), signal propagation delay is significantly greater. For example, propagation delay can range from tens to hundreds of milliseconds, depending on the satellite's orbital altitude and the type of satellite communication service. To address this significant propagation delay, the timing relationship of NTN systems needs to be enhanced compared to NR systems.

[0097] As in the NR system, in the NTN system, the terminal device needs to consider the impact of TA when performing uplink transmission. Since the propagation delay in the NTN system is large, the range of TA values ​​is also relatively large. When the terminal device is scheduled to perform uplink transmission in time slot n, the terminal device can determine the timing of uplink transmission based on the round-trip propagation delay (such as transmitting in advance during uplink transmission) so that the signal arrives at the base station side in time slot n of the uplink on the base station side. The timing relationship in the NTN system can include two cases, as shown in Figure 6A and Figure 6B respectively.

[0098] One case is that, like the NR system, the downlink time slot and uplink time slot on the base station side of the NTN system are aligned (as shown in time slot n in Figure 6A). In this case, in order to align the uplink transmission of the terminal device with the uplink and downlink time slots on the base station side, the terminal device needs to use a larger TA value. When performing uplink transmission, a larger offset value, such as K offset .

[0099] Another case is that, unlike the NR system, there is an offset value between the downlink time slot and the uplink time slot on the base station side (as shown in Figure 6B). In this case, if you want to align the uplink transmission of the terminal device with the uplink time slot on the base station side, the terminal device only needs to use a smaller TA value. However, in this case, the base station may require additional scheduling complexity to handle the corresponding scheduling timing.

[0100] Timing relationship of NR system

[0101] To ensure communication quality, relevant technologies define the timing relationship in the NR system. The following describes the physical downlink shared channel (PDSCH) reception timing, PUSCH transmission timing, hybrid automatic repeat request-ACKnowledgement (HARQ-ACK) transmission timing, media access control element (MAC CE) activation timing, channel state information (CSI) transmission timing, CSI reference resource timing, and aperiodic sounding reference signal (SRS) transmission timing.

[0102] PDSCH reception timing: When a UE is scheduled to receive PDSCH by downlink control information (DCI), the DCI includes the indication information of K0, which is used to determine the time slot for transmitting the PDSCH. For example, if the scheduling DCI is received on time slot n, the time slot allocated for PDSCH transmission is time slot Among them, K0 is determined according to the subcarrier spacing of PDSCH, μ PDSCH and μ PDCCH Used to determine the subcarrier spacing configured for PDSCH and PDCCH respectively. The value range of K0 is 0 to 32.

[0103] DCI-scheduled PUSCH transmission timing: When a UE is scheduled by DCI to transmit PUSCH, the DCI includes K2 indication information, which is used to determine the time slot for transmitting the PUSCH. For example, if the scheduling DCI is received on time slot n, the time slot allocated for PUSCH transmission is time slot Among them, K2 is determined according to the subcarrier spacing of PDSCH, μ PUSCH and μ PDCCH Used to determine the subcarrier spacing configured for PUSCH and PDCCH respectively. The value range of K2 is 0 to 32.

[0104] Transmission timing of PUSCH scheduled by RAR grant: For the time slot scheduled by RAR grant for PUSCH transmission, if after the UE initiates PRACH transmission, the UE receives the end position of the PDSCH including the corresponding RAR grant message in time slot n, then the UE transmits the PUSCH in time slot n+K2+Δ, where K2 and Δ are agreed upon by the protocol.

[0105] Timing of HARQ-ACK transmission on PUCCH: For the timeslots of PUCCH transmission, if a PDSCH reception ends in timeslot n or a PDCCH reception indicating a Semi-Persistent Scheduling (SPS) PDSCH release ends in timeslot n, the UE shall transmit the corresponding HARQ-ACK information on the PUCCH resources in timeslot n+K1, where K1 is the timeslot number and is indicated by the PDSCH-to-HARQ-timing-indicator information field in the DCI format or provided by the dl-DataToUL-ACK parameter. K1=0 corresponds to the last timeslot of PUCCH transmission overlapping with the timeslot of PDSCH reception or PDCCH reception indicating an SPS PDSCH release.

[0106] MAC CE activation timing: When the HARQ-ACK information corresponding to the PDSCH including the MAC CE command is transmitted on time slot n, the corresponding behavior indicated by the MAC CE command and the downlink configuration assumed by the UE should be activated from time slot n. The first time slot after Indicates the number of time slots in each subframe under the subcarrier spacing configuration μ.

[0107] CSI transmission timing on PUSCH: The CSI transmission timing on PUSCH is the same as the transmission timing of DCI-scheduled PUSCH transmission in general.

[0108] CSI reference resource timing: For CSI reporting in uplink time slot n′, the CSI reference resource is based on a single downlink time slot nn. CSI_ref Certain, among them, μ DL and μ UL The subcarrier spacing configurations for downlink and uplink respectively. CSI_ref The value of depends on the type of CSI reporting.

[0109] Aperiodic SRS transmission timing: If a UE receives a DCI triggering the transmission of aperiodic SRS in time slot n, the UE The aperiodic SRS in each triggered SRS resource set is transmitted on the network, where k is configured by the higher-layer parameter slotOffset in each triggered SRS resource set and is determined according to the subcarrier spacing corresponding to the triggered SRS transmission, μ SRS and μ PDCCH They are respectively the subcarrier spacing configuration of the triggered SRS transmission and the PDCCH carrying the triggering command.

[0110] Timing enhancement of NTN systems

[0111] The PDSCH reception timing in the NR system is only affected by the timing of the downlink receiving side and is not affected by the large transmission round-trip delay in the NTN system. Therefore, the NTN system can reuse the PDSCH reception timing in the NR system.

[0112] For other timings affected by the interaction between downlink reception and uplink transmission, in order to work properly in the NTN system, or in order to overcome the large transmission delay in the NTN system, the timing relationship needs to be enhanced. A simple solution is to introduce an offset parameter K in the system. offset And apply this parameter to the relevant timing relationship. The following introduces how to use this offset parameter.

[0113] The transmission timing of the DCI-scheduled PUSCH (including the CSI transmitted on the PUSCH) is: If the scheduled DCI is received on time slot n, the time slot allocated for PUSCH transmission is time slot

[0114] RAR grant-scheduled PUSCH transmission timing: For the time slot scheduled by RAR grant for PUSCH transmission, the UE is in time slot n+K2+Δ+K offset The PUSCH is transmitted on the

[0115] Transmission timing of HARQ-ACK on PUCCH: For the time slot of PUCCH transmission, the UE should transmit HARQ-ACK in time slot n+K1+K offset The corresponding HARQ-ACK information is transmitted on the PUCCH resources within the HARQ-ACK channel.

[0116] MAC CE activation timing: When the HARQ-ACK information corresponding to the PDSCH including the MAC CE command is transmitted on time slot n, the corresponding behavior indicated by the MAC CE command and the downlink configuration assumed by the UE should be activated from time slot n. It takes effect from the first time slot after the UE is started, where X may be determined by the UE capability of the NTN and may not be 3.

[0117] CSI reference resource timing: For uplink time slot n ′The CSI reference resource for reporting CSI is based on a single downlink time slot Sure.

[0118] Aperiodic SRS transmission timing: If a UE receives a DCI triggering the transmission of aperiodic SRS in time slot n, the UE The aperiodic SRS in each triggered SRS resource set is transmitted.

[0119] NTN cell system messages can broadcast a cell-level offset parameter, namely cell specific Koffset, K cell,offset In addition, for connected UEs, the network device can usually send a UE-specific offset parameter carried in the Differential Koffset MAC CE to the UE based on the TA reported by the UE. UE,offset , the offset parameter can be used to indicate the difference between the offset parameter used by the UE and the cell-level offset parameter. In other words, the K used by the UE offset K offset =K cell,offset -K UE,offset For example, for PUSCH transmission scheduled by cell radio network temporary identifier (C-RNTI) PDCCH, K offset To determine the PUSCH transmission timing. In some other cases, such as for PUSCH transmission scheduled by random access response (RAR) UL grant, K cell,offset To determine the transmission timing of PUSCH.

[0120] GNSS

[0121] In Release 17 IoT NTN scenarios, such as narrowband Internet of Things (NB-IoT) and enhanced machine type communication (eMTC) connected to the NTN, the GNSS measurement module and communication module of the IoT terminal device cannot operate simultaneously (Simultaneous GNSS and NTN NB-IoT / eMTC operation is not assumed). In Release 17 NTN, IoT terminal devices can only perform GNSS measurements to obtain location information in RRC IDLE or RRC INACTIVE states, and the GNSS module cannot be activated in the RRC connected state. Therefore, before entering the RRC connected state, the UE must first obtain its own GNSS position using the GNSS module. The UE can determine the GNSS position validity period based on its own circumstances (such as the UE's mobility status) and report the remaining GNSS position validity period to the network device during RRC connection establishment / RRC re-establishment / RRC connection recovery. For a UE in the RRC connected state, when its GNSS position expires, the UE cannot perform GNSS operations in the RRC connected state and cannot calculate the time to return to the RRC IDLE state.

[0122] In Release 18, GNSS was enhanced for NTN scenarios. For example, the following research goal was clearly stated in the relevant meeting: to enhance the performance of IoT-NTN in Release 18 to address issues left over from Release 17. This work considers Rel-17 IoT-NTN as a baseline as well as Rel-17 NR-NTN outcome and the further IoT-NTN performance enhancements objectives are listed below:

[0123] -Disabling of HARQ feedback to mitigate impact of HARQ stalling on UE data rates [RAN1, RAN2];

[0124] - Study and specify, if needed, improved GNSS operations for a new position fix for UE pre-compensation during long connection times and for reduced power consumption [RAN1]

[0125] Based on the above research objectives, in Release 18, IoT devices connected to the NTN will be able to perform GNSS measurements in the RRC connected state. For connected GNSS measurements, two triggering mechanisms are supported: network device-triggered GNSS measurements and device-autonomous GNSS measurements.

[0126] For GNSS measurements triggered by a network device, the network device configures a GNSS measurement gap duration for the terminal device and triggers the terminal device to perform GNSS measurements by sending a GNSS measurement MAC CE. After receiving the GNSS measurement MAC CE, the terminal device initiates the GNSS measurement gap and performs GNSS measurements during the GNSS measurement gap to obtain its own GNSS position.

[0127] For GNSS measurements triggered autonomously by the terminal device, the network device configures a GNSS measurement timer for the terminal device. The terminal device starts the GNSS measurement timer when the GNSS validity duration expires, or starts the GNSS measurement timer after X time after the GNSS validity duration expires (where X is the time after the GNSS validity duration of the terminal device expires that the terminal device is allowed to use the expired GNSS position for time-frequency pre-compensation for uplink transmission), and performs GNSS measurement during the running of the GNSS measurement timer to obtain its own GNSS position.

[0128] However, there may be some problems when the terminal device performs GNSS operations in the connected state. As mentioned above, the terminal device cannot communicate with the network device during the GNSS measurement (that is, the terminal device cannot receive downlink transmission or send uplink transmission). The duration of the GNSS measurement gap or the GNSS measurement timer can be the following values: 1s, 2s, 3s, 4s, 5s, 6s, 7s, 13s, 19s, 25s, 31s. It can be seen that the GNSS measurement time is relatively long, and during the GNSS measurement, the terminal device still occupies some dedicated resources for transmission configured by the network device for the terminal device. From the perspective of system resource utilization efficiency, this method is not conducive to the efficient use of system resources. On the other hand, after the terminal device completes the GNSS measurement, the TA of the terminal device may change significantly, resulting in the terminal device-specific offset parameter K previously configured by the network. offset It is unavailable (for example, the TA of the terminal device is greater than the terminal device-specific offset parameter), thereby affecting the uplink transmission.

[0129] An embodiment of the present application provides a method for wireless communication, which solves the above problem by releasing the resources configured by the network device for the terminal device and / or stopping using the offset parameters specific to the terminal device (i.e., performing the first operation) when the terminal device performs GNSS measurement.

[0130] Figure 7 is a flowchart illustrating a method for wireless communication according to one embodiment of the present application. The method for wireless communication according to one embodiment of the present application will be described below with reference to Figure 7. The method illustrated in Figure 7 can be applied to any of the aforementioned communication scenarios. For example, the method illustrated in Figure 7 can be applied to NTN network communication scenarios, such as scenarios where NB-IoT and eMTC are connected to the NTN.

[0131] 7 , in step S710 , in response to the terminal device initiating GNSS measurement, the terminal device performs a first operation.

[0132] In some embodiments, the first operation may include releasing resources configured by the network device for the terminal device. Since the terminal device is generally unable to communicate when performing GNSS measurement, the terminal device performs the first operation in response to the terminal device initiating the GNSS measurement, which helps improve resource utilization.

[0133] In some embodiments, releasing the resources configured by the network device for the terminal device includes one or more of the following: clearing the hybrid automatic repeat request (HARQ) cache of the terminal device; releasing the physical uplink control channel PUCCH resources of the terminal device; releasing the sounding reference signal SRS resources of the terminal device; releasing the dedicated resources of the terminal device for scheduling request SR; releasing the uplink semi-persistent scheduling SPS resources of the terminal device; and releasing the downlink semi-persistent scheduling SPS resources of the terminal device.

[0134] The embodiments of the present application enable the terminal device to release the semi-static resources configured by the network when starting GNSS measurement, thereby effectively recycling these resources. At the same time, the network device can allocate the recycled resources to other terminal devices for use, thereby helping to improve the efficiency of system resource utilization.

[0135] In some embodiments, the first operation may include stopping use of or clearing a specific offset parameter of the terminal device. The specific offset parameter of the terminal device may be a specific offset parameter of the terminal device indicated by the network device and received by the terminal device before starting the GNSS.

[0136] The exclusive offset parameter of the terminal device can be used to determine the uplink transmission timing of the terminal device or to determine the time domain resource for the uplink transmission of the terminal device. After the terminal device completes the GNSS measurement, the timing advance of the terminal device may change significantly. The change in the timing advance of the terminal device may cause the exclusive offset parameter of the terminal device configured by the network device for the terminal device (such as the one configured by the network device for the terminal device before starting the GNSS measurement) to be unavailable, for example, the TA of the terminal device is greater than the exclusive offset parameter of the terminal device.

[0137] Therefore, the first operation includes stopping use or clearing the exclusive offset parameter of the terminal device, which can avoid the impact of a small exclusive offset parameter of the terminal device on the uplink communication of the terminal device.

[0138] In some embodiments, the offset parameter for uplink transmission by the terminal device is associated with the cell-level offset parameter and the terminal device's dedicated offset parameter. Taking the NTN scenario mentioned above as an example, the offset parameter for uplink transmission by the terminal device can be the difference between the cell-level offset parameter and the terminal device's dedicated offset parameter, i.e., K offset =K cell,offset -K UE,offset , where K cell,offset is the cell-level offset parameter, K UE,offsetThe above-mentioned stopping using or clearing the exclusive offset parameter of the terminal device may refer to the offset parameter of the terminal device for uplink transmission being the cell-level offset parameter, or when calculating the offset parameter of the terminal device for uplink transmission, the exclusive offset parameter of the terminal device is considered to be "0", that is, K offset =K cell,offset .

[0139] The above-mentioned stopping of use may also be replaced by one or more of the following operations: ignoring, deleting, clearing, suspending, terminating use, and setting or resetting the value of the exclusive offset parameter to 0, etc.

[0140] The embodiment of the present application stops using the terminal device-specific offset parameters when the terminal device performs GNSS measurement, which can effectively avoid the situation where the terminal device-specific offset parameters previously configured by the network device become unavailable after the terminal device completes the GNSS measurement because its TA may undergo significant changes, thereby effectively ensuring uplink transmission.

[0141] The phrase "in response to the terminal device initiating a GNSS measurement, the terminal device performs the first operation" mentioned herein may, for example, refer to the terminal device performing the first operation when the terminal device initiates the GNSS measurement. If the terminal device initiates the GNSS measurement at time T, then in response to the terminal device initiating the GNSS measurement, the terminal device performs the first operation, which may also refer to a time after time T, or at time T + n, at which the terminal device performs the first operation. For example, in response to the terminal device initiating a GNSS measurement, the terminal device performs the first operation, which may be replaced by the terminal device performing the first operation during the process of the terminal device performing the GNSS measurement.

[0142] There are various methods for triggering a terminal device to initiate a GNSS measurement. For example, a GNSS measurement can be triggered by the terminal device or by a network device. In some embodiments, the terminal device initiates a GNSS measurement if a first condition is met. The first condition can be associated with, for example, a first message and / or a first timer sent by the network device.

[0143] The first information sent by the network device may be used to instruct the terminal device to start GNSS measurement. For example, the first information may be a GNSS measurement command issued by the network device to start the GNSS gap mentioned above. Accordingly, the first condition may include the terminal device receiving the first information sent by the network device.

[0144] The timing duration of the first timer is related to the validity period of the GNSS measurement result of the terminal device. As mentioned above, the GNSS measurement result of the terminal device has a validity period, and the terminal device can determine the validity period of the GNSS measurement result based on its own situation (such as mobile status).

[0145] In some embodiments, the timing duration of the first timer can be the valid time of the GNSS measurement result of the terminal device. In this way, the first condition can reuse the existing timer that indicates the validity of the GNSS measurement result, thereby facilitating implementation. In this case, the first condition can include the timeout of the first timer, that is, when the GNSS measurement result fails, or when the validity period of the GNSS measurement result times out, the terminal device starts the GNSS measurement. For example, in some cases, after the validity period of the GNSS measurement result times out, the terminal device is allowed to use the expired GNSS position for time-frequency pre-compensation for uplink transmission within a certain period of time (within time X). Therefore, the first condition can include after the first duration after the first timer times out, that is, after the first duration after the validity period of the GNSS measurement result times out, the terminal device starts the GNSS measurement.

[0146] In some embodiments, a dedicated first timer can be set for the start of GNSS measurement to facilitate separate control. For example, the timing duration of the first timer can be the valid time of the GNSS measurement result of the terminal device. The first condition can include the timeout of the first timer, that is, the first timer expires to indicate that the terminal device starts the GNSS measurement when the valid period of the GNSS measurement result expires. For another example, the timing duration of the first timer can also be the sum of the valid time of the GNSS measurement result of the terminal device and the first duration. At this time, the first condition can include the timeout of the first timer, that is, the first timer expires to indicate that the terminal device starts the GNSS measurement after the first duration after the valid period of the GNSS measurement result expires.

[0147] In the above two implementations, the first duration may be the time X mentioned above, or may be a time associated with the time X.

[0148] Controlling the terminal device through the first condition to start GNSS measurement when the validity period of the GNSS measurement result expires helps to improve the validity of the GNSS measurement result; controlling the terminal device through the first condition to start GNSS measurement after the first period of time after the validity period of the GNSS measurement result expires helps to improve the flexibility of determining the timing of GNSS measurement.

[0149] In some embodiments, the terminal device may receive second information sent by the network device, where the second information may be used to indicate whether the terminal device performs a first operation when initiating a GNSS measurement or during a GNSS measurement. The first operation mentioned here may, for example, refer to stopping or clearing a dedicated offset parameter of the terminal device. That is, whether the terminal device stops using or clears the dedicated offset parameter of the terminal device when initiating a GNSS measurement or during a GNSS measurement may be determined based on an instruction from the network device, thereby improving system flexibility.

[0150] The exclusive offset parameters of the terminal device are very necessary for determining the communication timing of the terminal device. In some embodiments, after the terminal device completes the GNSS measurement and / or resumes the communication transmission with the network device, if the terminal device receives a command or indication information carrying the terminal device exclusive offset parameters issued by the network device, the terminal device resumes using the terminal device exclusive offset parameters. The command or indication information carrying the terminal device exclusive offset parameters issued by the network device may be, for example, the Differential Koffset MAC CE signaling issued by the base station. Then, after the exclusive offset parameters of the terminal device are stopped being used and before the terminal device receives the above indication information, the offset parameters used by the terminal device for uplink communication are all cell-level offset parameters.

[0151] In some embodiments, the terminal device is in a Radio Resource Control (RRC) connected state. A terminal device in a connected state is typically unable to communicate while performing GNSS measurements. However, the network device typically configures resources for the terminal device in the connected state. Therefore, when the terminal device in the connected state initiates a GNSS measurement, the resources configured by the network device for the terminal device can be released to improve resource utilization. Furthermore, discontinuing the use of the terminal device's specific offset parameters helps prevent the impact of a small terminal device-specific offset parameter on uplink communications.

[0152] In some embodiments, the terminal device's dedicated offset parameter is carried in the Media Access Controller (MAC CE) signaling.

[0153] In some embodiments, the network device mentioned above may be a network device in a non-terrestrial network (NTN). In other words, the method provided in the embodiments of the present application may be applied in NTN communication scenarios.

[0154] As mentioned earlier, a terminal device can perform uplink transmission based on the timing advance to avoid interference within the cell. Therefore, determining the timing for reporting the timing advance of the terminal device is a problem that needs to be solved.

[0155] Another embodiment of the present application provides a method for wireless communication to solve the above-mentioned problems. The method for wireless communication provided by another embodiment of the present application is described below in conjunction with FIG8 . The method shown in FIG8 can be applied to any of the communication scenarios mentioned above. For example, the method shown in FIG8 can be applied to communication scenarios of NTN networks, such as scenarios where NB-IoT and eMTC are connected to NTN. For another example, the method shown in FIG8 can be applied to communication scenarios of NR networks.

[0156] 8 , the method for wireless communication may include step S810 .

[0157] In step S810, when the second condition is met, the terminal device triggers the reporting of the TA parameters. In other words, when the second condition is met, the terminal device reports the TA parameters. In other words, the second condition is the triggering condition for reporting the TA parameters.

[0158] The second condition is associated with one or more of the following: the moment when the terminal device completes the global navigation satellite system GNSS measurement; the switching of the service cell of the terminal device; and the switching of the service satellite of the terminal device.

[0159] As mentioned above, after the terminal device performs GNSS measurement, the TA of the terminal device may change significantly. Therefore, the second condition can be associated with the time when the terminal device completes the GNSS measurement, thereby facilitating timely updating of the TA of the terminal device to reduce the error of the TA. In addition, when the GNSS measurement is completed, the terminal device can determine the parameters associated with the TA based on the GNSS measurement results, such as the N mentioned above. TA,UE-specific , which facilitates the reporting of TA parameters.

[0160] When the serving cell of a terminal device switches, the TA parameters of the terminal device typically change significantly. Therefore, the second condition may be associated with the switching of the serving cell of the terminal device. For example, the second condition may be the switching moment of the serving cell of the terminal device. In other words, when the serving cell of the terminal device switches, the terminal device triggers the reporting of the TA parameters.

[0161] The content of the second condition mentioned above can be determined according to the switching type of the service cell of the terminal device. That is, the condition for the terminal device to trigger TA reporting is associated with the type of cell switching performed by the terminal device. As an implementation method, the second condition may include one or more of the following: the terminal device receives a cell switching command; when the terminal device initiates random access in the target cell; when the terminal device completes the cell switching, and before the terminal device sends the first uplink information to the target cell; wherein the first uplink information is the first uplink information or PUSCH sent by the terminal device to the target cell.

[0162] The switching types of the service cell include at least RACH-less switching and cell switch. Among them, in cell switch switching, the terminal device usually initiates a random access process in the target cell, while for RACH-less switching, the random access process is usually not included. Therefore, in RACH-less switching, the second condition may include one or more of the following: the terminal device receives a cell switching command; before the terminal device sends the first uplink information to the target cell; and when the terminal device completes the RACH-less cell switching. In cell switch, the second condition may include one or more of the following: the terminal device receives a cell switching command, such as cell switch command MAC CE; when the terminal device initiates random access in the target cell; before the terminal device sends the first uplink information to the target cell; and when the terminal device completes the cell switch switching.

[0163] In some cases, the service satellite of the terminal device changes, but the physical cell identifier (PCI) of the terminal device remains unchanged. For example, the service satellite of the terminal device switches from satellite 1 to satellite 2, but the ground station providing the service remains unchanged. Therefore, the second condition can also be associated with the switching of the service satellite of the terminal device. For example, the second condition may include that the service satellite of the terminal device switches, but the physical cell identifier does not change. Since the service satellite of the terminal device switches, the TA parameters of the terminal device usually change significantly. Therefore, in this case, the terminal device triggers the reporting of the TA parameters, which helps to improve the accuracy of the TA parameters.

[0164] In some embodiments, the second condition may include a first moment. The first moment may be associated with the moment of receiving the satellite switching indication information sent by the network device, or the first moment may be the moment indicated by the satellite switching indication information. Typically, the terminal device can learn about the switching of the serving satellite through the satellite switching indication information "satSwitchWithReSync" broadcast by the network device. In other words, the satellite switching indication information sent by the network device may be, for example, the satellite switching indication information "satSwitchWithReSync" broadcast by the network device.

[0165] For example, the first time may be the time when the satellite switching instruction information is received, or the time when the satellite switching instruction information is received plus a duration Y. For another example, the first time may be the time indicated in the satellite switching instruction information.

[0166] In some embodiments, the first moment may be the time when the target cell starts serving the terminal device. This time may be carried in the satellite handover indication information, for example.

[0167] In some embodiments, when the second condition is met, the terminal device may determine whether to trigger reporting of the TA parameters based on a first parameter configured by the network device. For example, the first parameter may be used to indicate whether the terminal device triggers reporting of the TA parameters when any of the second conditions are met. For another example, the first parameter may be used to indicate whether the terminal device triggers reporting of the TA parameters when one or some of the second conditions are met.

[0168] In other words, for different second conditions, the terminal device can determine whether to trigger the reporting of TA parameters based on different parameters configured by the network device, and the terminal device can also determine whether to trigger the reporting of TA parameters based on the same parameter configured by the network device.

[0169] As an example, when the first parameter can be used to indicate that any of the above-mentioned second conditions is met, that is, when one or more of the following is met: the terminal device receives a cell switching command; the terminal device initiates random access in the target cell; the terminal device completes the cell switching, and before the terminal device sends the first uplink information to the target cell, the terminal device triggers the reporting of the TA parameters. As another example, the first parameter may include a second parameter and a third parameter, wherein the second parameter can be used to indicate that the terminal device triggers the reporting of the TA parameters when initiating random access in the target cell; and the third parameter can be used to indicate that the terminal device triggers the reporting of the TA parameters when receiving the cell switching command.

[0170] In some embodiments, the first parameter is a timing advance reporting parameter, such as ta-Report, and / or a timing advance reporting configuration parameter, such as TAR-Config.

[0171] Taking the first parameter ta-Report as an example, the first parameter can be used to indicate whether the terminal device triggers TA reporting during the random access process. Taking the first parameter TAR-Config as an example, the first parameter can be used to enable the connected terminal device to report TA.

[0172] In some embodiments, the first parameter is carried in a system message and / or in dedicated signaling of the terminal device. For example, when the first parameter is a timing advance reporting parameter, the first parameter may be carried in a system message. For another example, when the first parameter is a timing advance reporting configuration parameter, the first parameter may be carried in dedicated signaling of the terminal device.

[0173] In some embodiments, the terminal device is in a radio resource control RRC connected state.

[0174] The embodiments of the present application introduce a TA reporting trigger mechanism for various scenarios, helping network devices to obtain the timing advance of terminal devices as early as possible in various scenarios. For example, the various scenarios mentioned here may include scenarios where terminal devices perform GNSS measurements. In an NTN communication network, timely, or early, knowledge of the timing advance of terminal devices by network devices can assist the network devices in configuring unique offset parameters for the terminal devices, thereby helping to reduce uplink transmission latency.

[0175] The method embodiment of the present application is described in detail above in conjunction with Figures 1 to 8 . The device embodiment of the present application is described in detail below in conjunction with Figures 9 to 11 . It should be understood that the description of the method embodiment corresponds to the description of the device embodiment. Therefore, for portions not described in detail, reference can be made to the above method embodiment.

[0176] FIG9 is a schematic diagram of a terminal device provided by an embodiment of the present application. The terminal device shown in FIG9 includes: an execution unit 910 .

[0177] The execution unit 910 is used to respond to the terminal device initiating a global navigation satellite system GNSS measurement, and the terminal device performs a first operation; wherein the first operation includes one or more of the following: releasing resources configured by the network device for the terminal device; and stopping using or clearing the exclusive offset parameters of the terminal device.

[0178] In some embodiments, the terminal device starts the GNSS measurement, including: when a first condition is met, the terminal device starts the GNSS measurement; wherein the first condition is associated with one or more of the following: first information sent by the network device, the first information is used to instruct the terminal device to start the GNSS measurement; and a first timer, the timing duration of the first timer is related to the valid time of the GNSS measurement result of the terminal device.

[0179] In some embodiments, if the first condition is associated with the first timer, the first condition includes one or more of: expiration of the first timer; and a first period of time after expiration of the first timer.

[0180] In some embodiments, the releasing of resources configured by the network device for the terminal device includes one or more of the following: clearing the hybrid automatic repeat request HARQ cache of the terminal device; releasing the physical uplink control channel PUCCH resources of the terminal device; releasing the sounding reference signal SRS resources of the terminal device; releasing the exclusive resources of the terminal device for scheduling request SR; releasing the uplink semi-persistent scheduling SPS resources of the terminal device; and releasing the downlink semi-persistent scheduling SPS resources of the terminal device.

[0181] In some embodiments, the exclusive offset parameter of the terminal device is the exclusive offset parameter of the terminal device indicated by the network device and received by the terminal device before starting the GNSS.

[0182] In some embodiments, the offset parameter for uplink transmission of the terminal device is associated with a cell-level offset parameter and an exclusive offset parameter of the terminal device, and stopping using or clearing the exclusive offset parameter of the terminal device includes: the offset parameter for uplink transmission of the terminal device is the cell-level offset parameter.

[0183] In some embodiments, the first operation includes stopping use or clearing the exclusive offset parameter of the terminal device, and the device further includes: a receiving unit for receiving second information sent by the network device, and the second information is used to indicate whether the terminal device performs the first operation.

[0184] In some embodiments, the device further includes: a processing unit for, after the terminal device completes the GNSS measurement, in response to the terminal device receiving the terminal device's exclusive offset parameter indicated by the network device, causing the terminal device to resume using the terminal device's exclusive offset parameter.

[0185] In some embodiments, the terminal device is in a radio resource control RRC connected state.

[0186] In some embodiments, the terminal device's dedicated offset parameter is carried in a media access control element MAC CE signaling.

[0187] In some embodiments, the network device is a network device in a non-terrestrial network (NTN).

[0188] FIG10 is a schematic diagram of a terminal device provided by another embodiment of the present application. The terminal device shown in FIG10 includes: a reporting unit 1010 .

[0189] The reporting unit 1010 is used to trigger the reporting of the timing advance TA parameter of the terminal device when the second condition is met; the second condition is associated with one or more of the following: the moment when the terminal device completes the global navigation satellite system GNSS measurement; the switching of the service cell of the terminal device; and the switching of the service satellite of the terminal device.

[0190] In some embodiments, the second condition is associated with the switching of the service cell of the terminal device, and the second condition includes one or more of the following: the terminal device receives a cell switching command; the terminal device initiates random access in the target cell; the terminal device completes the cell switching, and before the terminal device sends the first uplink information to the target cell; wherein the first uplink information is the first uplink information sent by the terminal device to the target cell.

[0191] In some embodiments, the second condition is associated with the switching of the service satellite of the terminal device, and the second condition includes a first moment, wherein the first moment is associated with the moment when the satellite switching indication information sent by the network device is received, or the first moment is the moment indicated by the satellite switching indication information.

[0192] In some embodiments, the terminal device triggers reporting of TA parameters, including: the terminal device determines whether the terminal device triggers reporting of TA parameters based on a first parameter configured by the network device.

[0193] In some embodiments, the first parameter is a timing advance reporting parameter and / or a timing advance reporting configuration parameter.

[0194] In some embodiments, the first parameter is carried in a system message, and / or the first parameter is carried in dedicated signaling of the terminal device.

[0195] In some embodiments, the terminal device is in a radio resource control RRC connected state.

[0196] Figure 11 is a schematic block diagram of a communication device according to an embodiment of the present application. The dashed lines in Figure 11 indicate that the unit or module is optional. The device 1100 may be used to implement the method described in the above method embodiment. The device 1100 may be a chip or a terminal device.

[0197] The device 1100 may include one or more processors 1110. The processor 1110 may support the device 1100 to implement the method described in the method embodiment above. The processor 1110 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be another general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0198] The apparatus 1100 may further include one or more memories 1120. The memories 1120 store programs that can be executed by the processor 1110, causing the processor 1110 to perform the methods described in the above method embodiments. The memories 1120 may be independent of the processor 1110 or integrated into the processor 1110.

[0199] The apparatus 1100 may further include a transceiver 1130. The processor 1110 may communicate with other devices or chips via the transceiver 1130. For example, the processor 1110 may transmit and receive data with other devices or chips via the transceiver 1130.

[0200] The present invention also provides a computer-readable storage medium for storing a program. The computer-readable storage medium can be applied to a terminal device provided in the present invention, and the program enables a computer to execute the method performed by the terminal device in each embodiment of the present invention.

[0201] The present application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to the terminal device provided in the present application, and the program causes a computer to execute the method performed by the terminal device in each embodiment of the present application.

[0202] The embodiments of the present application also provide a computer program. The computer program can be applied to the terminal device provided in the embodiments of the present application, and the computer program enables a computer to execute the method executed by the terminal device in each embodiment of the present application.

[0203] It should be understood that the terms "system" and "network" in this application can be used interchangeably. In addition, the terms used in this application are only used to explain the specific embodiments of this application and are not intended to limit this application. The terms "first", "second", "third", and "fourth" in the specification and claims of this application and the accompanying drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0204] In the embodiments of this application, the term "indication" may refer to a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" may refer to a direct indication of B, e.g., B can obtain information through A; it may refer to an indirect indication of B, e.g., A indicates C, e.g., B can obtain information through C; or it may refer to an association between A and B.

[0205] In the embodiment of the present application, "B corresponding to A" means that B is associated with A and B can be determined based on A. However, it should be understood that determining B based on A does not mean determining B based solely on A, but B can also be determined based on A and / or other information.

[0206] In the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and indication, configuration and configuration, etc.

[0207] In the embodiments of the present application, "pre-definition" or "pre-configuration" may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., a terminal device and a network device). The present application does not limit the specific implementation method. For example, pre-definition may refer to information defined in a protocol.

[0208] In the embodiments of the present application, the “protocol” may refer to a standard protocol in the communications field, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, and the present application does not limit this.

[0209] In the embodiments of this application, the term "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0210] In various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0211] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0212] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0213] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0214] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be read by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital versatile disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0215] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A method for wireless communication, characterized in that: include: In response to the terminal device initiating a global navigation satellite system GNSS measurement, the terminal device performs a first operation; wherein the first operation includes one or more of the following: Releasing resources configured by the network device for the terminal device; as well as Stop using or clear the exclusive offset parameter of the terminal device.

2. The method according to claim 1, characterized in that The terminal device starts GNSS measurement, including: When the first condition is met, the terminal device starts the GNSS measurement; The first condition is associated with one or more of the following: first information sent by the network device, the first information being used to instruct the terminal device to start the GNSS measurement; and A first timer, wherein the timing duration of the first timer is related to the validity period of the GNSS measurement result of the terminal device.

3. The method according to claim 2, characterized in that If the first condition is associated with the first timer, the first condition includes one or more of the following: The first timer times out; and After a first period of time after the first timer times out.

4. The method according to any one of claims 1 to 3, characterized in that The releasing of resources configured by the network device for the terminal device includes one or more of the following: Clearing a hybrid automatic repeat request HARQ buffer of the terminal device; Releasing the physical uplink control channel PUCCH resources of the terminal device; Releasing a sounding reference signal SRS resource of the terminal device; Releasing dedicated resources of the terminal device for scheduling the request SR; Releasing uplink semi-persistent scheduling SPS resources of the terminal device; and Release the downlink semi-persistent scheduling SPS resources of the terminal device.

5. The method according to any one of claims 1 to 4, characterized in that The exclusive offset parameter of the terminal device is the exclusive offset parameter of the terminal device indicated by the network device and received by the terminal device before starting the GNSS.

6. The method according to claim 5, characterized in that The offset parameter for uplink transmission of the terminal device is associated with a cell-level offset parameter and a dedicated offset parameter of the terminal device, and the stopping of using or clearing the dedicated offset parameter of the terminal device includes: The offset parameter for uplink transmission of the terminal device is the cell-level offset parameter.

7. The method according to any one of claims 1 to 6, characterized in that The first operation includes stopping using or clearing the dedicated offset parameter of the terminal device, and the method further includes: The terminal device receives second information sent by the network device, where the second information is used to indicate whether the terminal device performs the first operation.

8. The method according to any one of claims 1 to 7, characterized in that The method further comprises: After the terminal device completes the GNSS measurement, in response to the terminal device receiving the terminal device's exclusive offset parameter indicated by the network device, the terminal device resumes using the terminal device's exclusive offset parameter.

9. The method according to any one of claims 1 to 8, characterized in that The terminal device is in a radio resource control RRC connection state.

10. The method according to any one of claims 1 to 9, characterized in that The dedicated offset parameter of the terminal device is carried in the media access control unit MAC CE signaling.

11. The method according to any one of claims 1 to 10, characterized in that The network device is a network device in a non-terrestrial network NTN.

12. A method for wireless communication, characterized in that: include: When the second condition is met, the terminal device triggers reporting of timing advance TA parameters; The second condition is associated with one or more of the following: The time when the terminal device completes the global navigation satellite system GNSS measurement; Switching of the serving cell of the terminal device; and Switching of the service satellite of the terminal device.

13. The method according to claim 12, characterized in that The second condition is associated with the switching of the serving cell of the terminal device, and the second condition includes one or more of the following: The terminal device receives a cell switching command; When the terminal device initiates random access in the target cell; When the terminal device completes the cell switching, and Before the terminal device sends the first uplink information to the target cell; The first uplink information is the first uplink information sent by the terminal device to the target cell.

14. The method according to claim 12 or 13, characterized in that The second condition is associated with the switching of the service satellite of the terminal device, and the second condition includes a first moment, wherein the first moment is associated with the moment when the satellite switching indication information sent by the network device is received, or the first moment is the moment indicated by the satellite switching indication information.

15. The method according to any one of claims 12 to 14, characterized in that: The terminal device triggers reporting of TA parameters, including: The terminal device determines whether to trigger reporting of TA parameters based on a first parameter configured by a network device.

16. The method according to claim 15, characterized in that The first parameter is a timing advance reporting parameter and / or a timing advance reporting configuration parameter.

17. The method according to claim 15 or 16, characterized in that The first parameter is carried in a system message, and / or the first parameter is carried in dedicated signaling of the terminal device.

18. The method according to any one of claims 12 to 17, characterized in that: The terminal device is in a radio resource control RRC connection state.

19. A terminal device, characterized in that: include: An execution unit, configured to, in response to the terminal device initiating a global navigation satellite system GNSS measurement, cause the terminal device to execute a first operation; wherein the first operation includes one or more of the following: Releasing resources configured by the network device for the terminal device; as well as Stop using or clear the exclusive offset parameter of the terminal device.

20. The device according to claim 19, characterized in that The terminal device starts GNSS measurement, including: When the first condition is met, the terminal device starts the GNSS measurement; The first condition is associated with one or more of the following: first information sent by the network device, the first information being used to instruct the terminal device to start the GNSS measurement; and A first timer, wherein the timing duration of the first timer is related to the validity period of the GNSS measurement result of the terminal device.

21. The device according to claim 20, characterized in that If the first condition is associated with the first timer, the first condition includes one or more of the following: The first timer times out; and After a first period of time after the first timer times out.

22. The device according to any one of claims 19 to 21, characterized in that The releasing of resources configured by the network device for the terminal device includes one or more of the following: Clearing a hybrid automatic repeat request HARQ buffer of the terminal device; Releasing the physical uplink control channel PUCCH resources of the terminal device; Releasing a sounding reference signal SRS resource of the terminal device; Releasing dedicated resources of the terminal device for scheduling the request SR; Releasing uplink semi-persistent scheduling SPS resources of the terminal device; and Release the downlink semi-persistent scheduling SPS resources of the terminal device.

23. The device according to any one of claims 19 to 22, characterized in that The exclusive offset parameter of the terminal device is the exclusive offset parameter of the terminal device indicated by the network device and received by the terminal device before starting the GNSS.

24. The device according to claim 23, characterized in that The offset parameter for uplink transmission of the terminal device is associated with a cell-level offset parameter and a dedicated offset parameter of the terminal device, and the stopping of using or clearing the dedicated offset parameter of the terminal device includes: The offset parameter for uplink transmission of the terminal device is the cell-level offset parameter.

25. The device according to any one of claims 19 to 24, characterized in that The first operation includes stopping using or clearing the dedicated offset parameter of the terminal device, and the device further includes: A receiving unit is used to receive second information sent by the network device, where the second information is used to indicate whether the terminal device performs the first operation.

26. The device according to any one of claims 19 to 25, characterized in that The device also includes: A processing unit is used for, after the terminal device completes the GNSS measurement, in response to the terminal device receiving the terminal device's exclusive offset parameter indicated by the network device, causing the terminal device to resume using the terminal device's exclusive offset parameter.

27. The device according to any one of claims 19 to 26, characterized in that The terminal device is in a radio resource control RRC connection state.

28. The device according to any one of claims 19 to 27, characterized in that The dedicated offset parameter of the terminal device is carried in the media access control unit MAC CE signaling.

29. The device according to any one of claims 19 to 28, characterized in that The network device is a network device in a non-terrestrial network NTN.

30. A terminal device, characterized in that: include: A reporting unit, configured to trigger the reporting of a timing advance TA parameter by the terminal device when a second condition is met; The second condition is associated with one or more of the following: The time when the terminal device completes the global navigation satellite system GNSS measurement; Switching of the serving cell of the terminal device; and Switching of the service satellite of the terminal device.

31. The device according to claim 30, characterized in that The second condition is associated with the switching of the serving cell of the terminal device, and the second condition includes one or more of the following: The terminal device receives a cell switching command; When the terminal device initiates random access in the target cell; When the terminal device completes the cell switching, and Before the terminal device sends the first uplink information to the target cell; The first uplink information is the first uplink information sent by the terminal device to the target cell.

32. The device according to claim 30 or 31, characterized in that The second condition is associated with the switching of the service satellite of the terminal device, and the second condition includes a first moment, wherein the first moment is associated with the moment when the satellite switching indication information sent by the network device is received, or the first moment is the moment indicated by the satellite switching indication information.

33. The device according to any one of claims 30 to 32, characterized in that The terminal device triggers reporting of TA parameters, including: The terminal device determines whether to trigger reporting of TA parameters based on a first parameter configured by a network device.

34. The device according to claim 33, characterized in that The first parameter is a timing advance reporting parameter and / or a timing advance reporting configuration parameter.

35. Apparatus according to claim 33 or 34, characterised in that The first parameter is carried in a system message, and / or the first parameter is carried in dedicated signaling of the terminal device.

36. The device according to any one of claims 30 to 35, characterized in that The terminal device is in a radio resource control RRC connection state.

37. A terminal device, characterized in that: The invention comprises a memory and a processor, wherein the memory is used to store a program, and the processor is used to call the program in the memory to execute the method according to any one of claims 1 to 11 or claims 12 to 18.

38. A device, characterized in that The invention comprises a processor, which is used to call a program from a memory to execute the method according to any one of claims 1 to 11 or claims 12 to 18.

39. A chip, characterized in that: It comprises a processor, which is used to call a program from a memory, so that a device equipped with the chip executes the method according to any one of claims 1 to 11, or claims 12 to 18.

40. A computer-readable storage medium, characterized in that A program is stored thereon, and the program enables a computer to execute the method according to any one of claims 1 to 11 or claims 12 to 18.

41. A computer program product, characterized in that The method comprises a program, wherein the program causes a computer to execute the method according to any one of claims 1 to 11 or claims 12 to 18.

42. A computer program, characterized in that The computer program enables a computer to execute the method according to any one of claims 1 to 11 or claims 12 to 18.

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