Wireless communication method, terminal device and network device

Abstract

The embodiment of the present application provides a wireless communication method, a terminal device and a network device, and the terminal device can achieve uplink synchronization in the NTN system by adjusting the TA. The wireless communication method includes: the terminal device receives first information sent by the network device, and the first information is used to adjust the TA.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communications, and more specifically, to a wireless communication method, a terminal device, and a network device. Background Art

[0002] The fifth generation of mobile communication technology, the new wireless (5G NR) system, defines the deployment scenarios of non-terrestrial networks (NTN) systems, including satellite networks. With the wide-area coverage capability of satellites, NTN systems can achieve the continuity of 5G NR services. Since satellites move quickly relative to the ground, NTN systems place higher requirements on uplink synchronization. How to achieve uplink synchronization in NTN systems is an urgent problem to be solved. Summary of the invention

[0003] The embodiments of the present application provide a wireless communication method, a terminal device, and a network device. The terminal device can achieve uplink synchronization in the NTN system by adjusting the TA.

[0004] In a first aspect, a wireless communication method is provided, the method comprising:

[0005] The terminal device receives first information sent by the network device, where the first information is used to adjust the timing advance (TA).

[0006] In a second aspect, a wireless communication method is provided, the method comprising:

[0007] The network device sends first information to the terminal device, where the first information is used to adjust the TA.

[0008] In a third aspect, a terminal device is provided for executing the method in the first aspect or its various implementations.

[0009] Specifically, the terminal device includes a functional module for executing the method in the above-mentioned first aspect or its various implementation modes.

[0010] In a fourth aspect, a network device is provided for executing the method in the second aspect or its respective implementation manners.

[0011] Specifically, the network device includes a functional module for executing the method in the above-mentioned second aspect or its various implementation modes.

[0012] In a fifth aspect, a terminal device is provided, comprising a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the first aspect or its implementation manners.

[0013] In a sixth aspect, a network device is provided, comprising a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the second aspect or its implementation manners.

[0014] In a seventh aspect, a device is provided for implementing the method in any one of the first to second aspects or any of their implementations.

[0015] Specifically, the apparatus includes: a processor, configured to call and run a computer program from a memory, so that a device equipped with the apparatus executes a method as described in any one of the first to second aspects or in each of their implementations.

[0016] In an eighth aspect, a computer-readable storage medium is provided for storing a computer program, wherein the computer program enables a computer to execute the method of any one of the first to second aspects or any of their implementations.

[0017] In a ninth aspect, a computer program product is provided, comprising computer program instructions, wherein the computer program instructions enable a computer to execute the method in any one of the first to second aspects above or in each of their implementations.

[0018] In a tenth aspect, a computer program is provided, which, when executed on a computer, enables the computer to execute the method in any one of the first to second aspects or in each of their implementations.

[0019] Through the above technical solution, the terminal device can adaptively adjust the TA based on the first information configured by the network device for adjusting the TA, avoiding the overhead of frequent TAC indications, avoiding the problem of inapplicable TA adjustment amount (when the terminal device receives the TAC, the TA may have been inaccurate due to time delay), and ensuring the synchronization of the terminal device and the network device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of a communication system architecture provided in an embodiment of the present application.

[0021] Figure 2 It is a schematic diagram of an RAR carrying TAC provided in an embodiment of the present application.

[0022] Figure 3 It is a schematic diagram of a TAC MCA CE provided in an embodiment of the present application.

[0023] Figure 4 It is a schematic flowchart of a wireless communication method provided according to an embodiment of the present application.

[0024] Figure 5 It is a schematic flowchart of uplink synchronization provided according to an embodiment of the present application.

[0025] Figure 6 It is a schematic flowchart of another uplink synchronization provided according to an embodiment of the present application.

[0026] Figure 7 It is a schematic block diagram of a terminal device provided according to an embodiment of the present application.

[0027] Figure 8 It is a schematic block diagram of a network device provided according to an embodiment of the present application.

[0028] Fig. 9 It is a schematic block diagram of a communication device provided according to an embodiment of the present application.

[0029] Fig.10 It is a schematic block diagram of a device provided according to an embodiment of the present application.

[0030] Fig.11 It is a schematic block diagram of a communication system provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0031] The following will describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. For the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] The embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced long term evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE on unlicensed spectrum (LTE-based access to unlicensed spectrum, LTE-U) system, NR on unlicensed spectrum (NR-based access to unlicensed spectrum, NR-U) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), next generation communication system or other communication systems, etc.

[0033] Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communications, but will also support, for example, device to device (Device to Device, D2D) communication, machine to machine (Machine to Machine, M2M) communication, machine type communication (Machine Type Communication, MTC), and vehicle to vehicle (Vehicle to Vehicle, V2V) communication, etc. The embodiments of the present application can also be applied to these communication systems.

[0034] Optionally, the communication system in the embodiment of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, or a standalone (SA) networking scenario.

[0035] The embodiments of the present application do not limit the spectrum to which they are applied. For example, the embodiments of the present application can be applied to licensed spectrum or unlicensed spectrum.

[0036] For example, the communication system 100 used in the embodiment of the present application is as follows: Figure 1 The communication system 100 may include a network device 110, which may be a device that communicates with a terminal device 120 (or a communication terminal or terminal). The network device 110 may provide communication coverage for a specific geographical area and may communicate with terminal devices located in the coverage area.

[0037] Figure 1 One network device and two terminal devices are shown exemplarily. Optionally, the communication system 100 may include multiple network devices and each network device may include another number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0038] Optionally, the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.

[0039] It should be understood that the device with communication function in the network / system in the embodiment of the present application can be referred to as a communication device. Figure 1 Taking the communication system 100 shown as an example, the communication equipment may include a network device 110 and a terminal device 120 with communication functions. The network device 110 and the terminal device 120 may be the specific devices described above and will not be repeated here. The communication equipment may also include other devices in the communication system 100, such as a network controller, a mobile management entity and other network entities, which is not limited in the embodiments of the present application.

[0040] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that 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 article generally indicates that the associated objects before and after are in an "or" relationship.

[0041] The embodiments of the present application describe various embodiments in combination with terminal devices and network devices, wherein: the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc. The terminal device may be a station (STAION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, and a next-generation communication system, for example, a terminal device in an NR network or a terminal device in a future evolved Public Land Mobile Network (PLMN) network, etc.

[0042] As an example but not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable devices may also be referred to as wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also powerful functions achieved through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and fully or partially independent of smartphones, such as smart watches or smart glasses, as well as devices that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various types of smart bracelets and smart jewelry for vital sign monitoring.

[0043] The network device can be a device for communicating with a mobile device. The network device can be an access point (AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and a network device or base station (gNB) in an NR network, or a network device in a future evolved PLMN network, etc.

[0044] In an embodiment of the present application, a network device provides services for a cell, and a terminal device communicates with the network device through transmission resources (e.g., frequency domain resources, or spectrum resources) used by the cell. The cell may be a cell corresponding to a network device (e.g., a base station). The cell may belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: a metro cell, a micro cell, a picocell, a femtocell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0045] It should be understood that the uplink synchronization mechanism of the NR system needs to first obtain the timing advance (TA) and then perform uplink synchronization based on the TA.

[0046] Specifically, the terminal device has different ways to obtain TA in the idle state and the connected state. When the terminal device is in the idle state (idle) or inactive state (inactive), it does not maintain time synchronization with the network side. Therefore, the terminal device needs to obtain TA and perform uplink synchronization calibration during the initial access process through a random access process. In the connected state (connected), the terminal device obtains TA according to the timing advance command (Timing Advance Command, TAC) sent by the network device and performs synchronization calibration.

[0047] Based on TAC or random access process, the uplink frame transmission advance is (N TA +N TAoffset )×T c Among them, N TA Related to the TAC or the TAC carried in the Random Access Response (RAR). The TAC gives the index of the timing advance adjustment. For the scenario where the RAR carries the TAC, N TA =T A ·16·64 / 2 μ , where T A =TAC, and its value is: 0, 1, 2, ..., 3846. For the scenario where TAC is carried in a dedicated Media Access Control Control Element (MAC CE), N TA_new =N TA_old +(T A -31)·16·64 / 2 μ , where T A=TAC, its value is: 0, 1, 2, ..., 63. In addition, T c is the minimum time unit of the physical layer, T c =1 / (Δf max ·N f ), where Δf max =480·10 3 Hz,N f =4096. N TAoffset The values ​​of are shown in Table 1 below.

[0048] Table 1 N TAoffset Value

[0049]

[0050] It should be noted that the current RAR format can be Figure 2 As shown, the RAR carries TAC, and the terminal device determines the initial TA value based on the received TA. Figure 2 The RAR shown may also carry some other information, such as uplink resource authorization and temporary cell radio network temporary identifier (Temporary Cell Radio Network Temporary Identity, TC-RNTI). The current TAC MAC CE may be as follows: Figure 3 As shown, the Media Access Control Control Element (MAC CE) carries TAC, and the TAC MAC CE also carries the TAG identifier corresponding to the TAC. The terminal device determines the updated TA value based on the received TA.

[0051] In addition, the network device configures a timing adjustment timer (timeAlignmentTimer) for each timing advance group (TAG). This configuration information is used to indicate how long the MAC entity considers the serving cell belonging to this TAG to be uplink time synchronized. When receiving the TA, the terminal device starts the timing adjustment timer to maintain uplink synchronization. When the timing adjustment timer times out, it performs corresponding operations, such as retaining N TA , clear the Hybrid Automatic Repeat reQuest (HARQ) buffer, etc.

[0052] The 5G NR system defines the deployment scenarios of NTN systems, including satellite networks. NTN generally uses satellite communications to provide communication services to ground users. Compared with ground cellular network communications, satellite communications have many unique advantages. First, satellite communications are not restricted by user regions. For example, general land communications cannot cover areas such as oceans, mountains, deserts, etc. where communication equipment cannot be set up or where there is no communication coverage due to sparse population. For satellite communications, since one satellite can cover a large area of ​​land, and satellites can orbit the earth, in theory every corner of the earth can be covered by satellite communications. Secondly, satellite communications have great social value. Satellite communications can be covered at a low cost in remote mountainous areas, poor and backward countries or regions, so that people in these areas can enjoy advanced voice communications and mobile Internet technologies, which is conducive to narrowing the digital divide with developed areas and promoting the development of these areas. Thirdly, satellite communications have long distances, and the cost of communications does not increase significantly as the communication distance increases; finally, satellite communications are highly stable and are not restricted by natural disasters.

[0053] Communication satellites are divided into Low-Earth Orbit (LEO) satellites, Medium-Earth Orbit (MEO) satellites, Geostationary Earth Orbit (GEO) satellites, High Elliptical Orbit (HEO) satellites, etc. according to their orbital altitudes.

[0054] For example, the LEO satellite altitude ranges from 500km to 1500km, and the corresponding orbital period is about 1.5 hours to 2 hours. The signal propagation delay of single-hop communication between users is generally less than 20ms. The maximum satellite visibility time is 20 minutes. The signal propagation distance is short, the link loss is small, and the transmission power requirement for the user terminal is not high.

[0055] For another example, the GEO satellite orbit altitude is 35786km, and its rotation period around the earth is 24 hours. The signal propagation delay of single-hop communication between users is generally 250ms.

[0056] It should be noted that compared with the cellular network used by traditional NR, the signal propagation delay between the terminal equipment and the satellite in NTN is greatly increased. In some scenarios, such as LEO, there is also the problem of rapid movement of the satellite relative to the ground. If the uplink synchronization mechanism of the current terrestrial NR system is directly used in the NTN system, there will be the following two problems:

[0057] 1. Due to the rapid movement of satellites relative to the ground, in order to ensure uplink synchronization between the terminal and the satellite, the network needs to continuously send TAC, which will bring a large amount of air interface signaling overhead.

[0058] 2. Due to the large propagation delay, even if the TA is adjusted through frequent TAC, the terminal device can only adjust the TA after a long period of time after the network sends the TAC, causing excessive delays in TA adjustment based on network signaling, and even causing the TA adjustment amount to be inapplicable, seriously affecting the user experience.

[0059] In view of the above technical problems, it is necessary to study the uplink synchronization enhancement solution in NTN. On the one hand, it is necessary to reduce the signaling overhead of frequent TAC indication and reduce the inapplicability of TA adjustment amount; on the other hand, it is also necessary to ensure the synchronization of terminals and networks to ensure the performance of data transmission.

[0060] The following is a detailed description of the uplink synchronization solution designed by the present application to address the above technical issues.

[0061] Figure 4 is a schematic flow chart of a wireless communication method 200 according to an embodiment of the present application, such as Figure 4 As shown, the method 200 may include part or all of the following contents:

[0062] S210, the network device sends first information to the terminal device, where the first information is used to adjust the TA;

[0063] S220, the terminal device receives the first information sent by the network device.

[0064] Optionally, the method 200 may be applied to NTN, that is, the embodiment of the present application may be applied to NTN.

[0065] Optionally, the embodiments of the present application may also be applied to systems other than NTN, for example, V2V, D2D, LTE, NR, and subsequently evolved communication systems.

[0066] Optionally, the first information may also be used to assist the terminal device in adjusting uplink synchronization. Assisting the terminal device in adjusting uplink synchronization may be understood as: the terminal device adjusts the TA based on the first information and then performs uplink synchronization based on the adjusted TA.

[0067] Optionally, in an embodiment of the present application, the network device may send the first information to the terminal device via broadcast or dedicated radio resource control (Radio Resource Control, RRC) signaling.

[0068] It should be noted that in the existing uplink synchronization mechanism, the network device indicates the TA, and the terminal device adjusts the uplink synchronization based on the TA indicated by the network device. However, in an embodiment of the present application, the network device indicates the first information for adjusting the TA, the terminal device adaptively adjusts the TA according to the first information, and adjusts the uplink synchronization based on the adjusted TA. In other words, the terminal device can actively and adaptively adjust the TA based on the first information, avoiding the overhead caused by the frequent TAC indications of the network device, and also avoiding the problem of inapplicability of the TA adjustment amount (when the terminal device receives the TAC, the TA may have been inaccurate due to the delay), thereby ensuring the synchronization of the terminal device and the network device. In other words, between receiving the TA adjustment command indicated by the network device (such as between one TAC and the next TAC), the terminal device can adaptively adjust the TA.

[0069] Optionally, in an embodiment of the present application, after receiving the first information, the terminal device may first save the first information. After the terminal device receives the TA indicated by the network device through the TAC MAC CE, or after the terminal device receives the TA indicated by the network device through the RAR, the terminal device adaptively adjusts the TA according to the first information.

[0070] Optionally, the terminal device receives second information sent by the network device, wherein the second information indicates a second TA; and the terminal device adjusts uplink synchronization according to the second TA.

[0071] For example, the second information is information carrying TAC MAC CE or a downlink shared channel (Downlink Shared Channel, DL-SCH), or the second information is RAR.

[0072] Optionally, during the operation of the first timer, the terminal device adjusts the TA according to the first information and the first TA.

[0073] Optionally, the first TA is one of the following:

[0074] TAC TA indicated in MAC CE, TA indicated in RAR, and TA after the last adjustment.

[0075] It should be understood that in the first TA adjustment during the operation of the first timer, the first TA can be the TA indicated in the TAC MAC CE or the TA indicated in the RAR, but cannot be the TA after the last adjustment.

[0076] For example, the first timer is started when the second information is received; or the first timer is started when the uplink synchronization is adjusted according to the second TA.

[0077] It should be noted that if the first timer is started at the moment of receiving the second information, or the first timer is started at the moment of adjusting the uplink synchronization according to the second TA, in either case, the first uplink synchronization during the operation of the first timer can be specifically one of the following two methods:

[0078] In method one, the terminal device adjusts the uplink synchronization according to the second TA; in method two, the terminal device adjusts the TA according to the first information and the first TA, and adjusts the uplink synchronization according to the adjusted TA.

[0079] Optionally, the terminal device receives third information sent by the network device during the operation of the first timer, and the third information indicates a third TA; the terminal device adjusts the uplink synchronization according to the third TA. For example, the third information is information carrying TAC MAC CE or DL-SCH, or the third information is RAR. That is to say, during the operation of the first timer, the terminal device receives a TA newly indicated by the network device, and the terminal device adjusts the uplink timing advance according to the newly received TA. Specifically, after receiving the third TA, the behavior of the UE may be consistent with that of receiving the second information. For example, at the moment of receiving the third information, the first timer is started; or, at the moment of adjusting the uplink synchronization according to the third TA, the first timer is started.

[0080] Correspondingly, during the operation of the first timer, the network device sends a third message to the terminal device, and the third message indicates a third TA, and the third TA is used by the terminal device to adjust uplink synchronization.

[0081] It should be noted that the third information is usually information carrying TAC MAC CE or DL-SCH. However, in the process of triggering random access, the third information may also be RAR.

[0082] Optionally, after receiving the third information, or at the moment of receiving the third information, the first timer may be stopped or reset.

[0083] It should be noted that, when the first timer times out, the terminal device can adaptively adjust the TA according to the first information; when the first timer times out, the terminal device can monitor the next TA indication of the network device, and after monitoring the next TA indication, the terminal device restarts the first timer and adaptively adjusts the TA according to the first information again. Optionally, the first timer can be preconfigured or configured by the network device.

[0084] For example, the network device sends second configuration information to the terminal device, where the second configuration information is used to configure a first timer, wherein during the operation of the first timer, the terminal device adjusts the TA according to the first information and the first TA.

[0085] Optionally, in the embodiment of the present application, a terminal device capability reporting mechanism may be introduced, for example, the terminal device reports whether it has the capability to support TA adjustment, thereby preventing a terminal device that does not support the capability from being unable to use the first information, or preventing a network device from sending the first information to a terminal device that does not support the capability.

[0086] For example, the terminal device sends first indication information to the network device, where the first indication information is used to indicate the terminal device's ability to support TA adjustment.

[0087] For another example, the terminal device receives a first request message sent by the network device, where the first request message is used to request the terminal device to report whether it has the capability to support TA adjustment; the terminal device sends a first indication message to the network device, where the first indication message is used to indicate the terminal device's capability to support TA adjustment.

[0088] Optionally, the network device may send the first information to a terminal device supporting TA adjustment capability via dedicated RRC signaling.

[0089] Optionally, the network device sends the first information via broadcast or dedicated RRC signaling. If the terminal device does not support the TA adjustment capability, the terminal device ignores or skips the first information; if the terminal device supports the TA adjustment capability, the terminal device adjusts the TA according to the first information.

[0090] Optionally, as embodiment 1, the first information includes at least one of the following information:

[0091] The step size (delta) of TA adjustment, the time interval of TA adjustment, the time point of TA adjustment, the conditions for triggering TA adjustment, and the indication information for starting the auxiliary adjustment uplink TA function.

[0092] Optionally, in the first embodiment, the terminal device adjusts the TA according to the first information and the first TA. Alternatively, during the operation of the first timer, the terminal device adjusts the TA according to the first information and the first TA.

[0093] Optionally, during the operation of the first timer, the terminal device counts the adaptive cumulative TA adjustment amount, such as the terminal device calculates the cumulative TA adjustment amount according to the first information, and performs TA adjustment based on the cumulative adjustment amount each time the TA is adjusted.

[0094] Optionally, in the first embodiment, the terminal device may adjust the TA according to the first information and the first TA by:

[0095] If the first TA is the TA indicated in the TAC MAC CE or the TA indicated in the RAR, and it is the first TA adjustment, the adjusted TA = the first TA + the step size of the TA adjustment; or,

[0096] If the first TA is the TA indicated in the TAC MAC CE or the TA indicated in the RAR, and it is the i-th TA adjustment, the adjusted TA = the first TA + the i-th TA cumulative adjustment value, where i is a positive integer and i>1; or,

[0097] If the first TA is the TA after the (i-1)th adjustment, and it is the i-th TA adjustment, the adjusted TA=the first TA+the step size of the TA adjustment, i is a positive integer, and i>2.

[0098] For example, the first information includes: a step size of TA adjustment, a time interval of TA adjustment, and a condition for triggering TA adjustment, wherein the step size of TA adjustment is delta M, the time interval of TA adjustment is 1 minute, and the condition for triggering TA adjustment is that the difference between two measured RSRPs is greater than a threshold N. Assuming that the TA indicated in the TAC is TA K, if the condition for triggering TA adjustment is met at time t1, that is, the difference between two measured RSRP thresholds is greater than the threshold N, the UE automatically adjusts the uplink TA after the first time period at time t1 (the first time period>=0), and the adjusted TA=TA K (current TA) indicated in the TAC+delta M. At every TA adjustment time interval, or at every TA adjustment time interval and when the TA adjustment condition is met, the UE performs another TA adjustment, and the adjusted TA=TA after the last adjustment+delta M, that is, TA K indicated in the TAC+accumulated TA adjustment amount (such as the second TA adjustment, the accumulated TA adjustment amount=delta M+delta M).

[0099] For another example, the first information includes: the step size of TA adjustment and the time interval of TA adjustment, the step size of TA adjustment is delta M, and the time interval of TA adjustment is 1 minute. Assuming that the TA indicated in the TAC is K, and the TAC of the current TA is received at time t1, the UE automatically adjusts the uplink TA after the first time period at time t1 (the first time period >= 0), and the adjusted TA = TA K + delta M indicated in the TAC. At every TA adjustment time interval, the UE performs a TA adjustment again, and the adjusted TA = TA after the last adjustment + delta M, that is, TA K indicated in the TAC + accumulated TA adjustment amount (such as the second TA adjustment, the accumulated TA adjustment amount = delta M + delta M).

[0100] Specifically, in the first embodiment, Figure 5 As shown, it is assumed that the base station indicates the first information to UE 1 and UE 2 using broadcast or dedicated RRC signaling, and the first information includes that the step size of TA adjustment is step size A and the time interval of TA adjustment is T, and UE 1 and UE 2 save the first information. The base station sends TAC 1 to UE 1, and the TAC 1 indicates TA 1, and the base station sends TAC 2 to UE 2, and the TAC 2 indicates TA 2. UE 1 adjusts the uplink synchronization with the base station based on TA 1, that is, UE 1 sends the uplink information in advance according to TA 1; UE 2 adjusts the uplink synchronization with the base station based on TA 2, that is, UE 2 sends the uplink information in advance according to TA 2. After UE 1 adjusts the uplink synchronization with the base station based on TA 1, UE 1 automatically adjusts the uplink TA at an interval of T, and the adjusted TA = TA 1 + step length A. UE 1 sends uplink information in advance according to TA 1 + step length A. After UE 2 adjusts the uplink synchronization with the base station based on TA 2, UE 2 automatically adjusts the uplink TA at an interval of T, and the adjusted TA = TA 2 + step length A. UE 2 sends uplink information in advance according to TA 2 + step length A. UE1 and UE 2 perform TA adjustment again at every subsequent time interval T.

[0101] Optionally, as embodiment 2, the first information includes at least one of the following information:

[0102] At least one TA adjustment step, at least one TA adjustment time interval, at least one TA adjustment time point, at least one condition for triggering TA adjustment, at least one group identifier, and at least one auxiliary adjustment uplink TA function activation indication information.

[0103] Optionally, at least part of the information in the first information satisfies a one-to-one correspondence. For example, the at least one group identifier corresponds to the at least one TA adjustment step. For another example, a TA adjustment step corresponds to a TA adjustment time interval, a TA adjustment time point, and a condition for triggering TA adjustment.

[0104] Optionally, at least part of the information in the first information satisfies a one-to-many correspondence relationship. For example, multiple TA adjustment step sizes correspond to a TA adjustment time interval. For another example, multiple group identifiers correspond to a TA adjustment time interval, a TA adjustment time point, and a condition for triggering TA adjustment.

[0105] Optionally, at least one of the following information used by the terminal groups identified by different group identifiers in the first information has different values:

[0106] TA adjustment step size, TA adjustment time interval, TA adjustment time point, conditions for triggering TA adjustment, and auxiliary adjustment uplink TA function activation indication information.

[0107] For example, in the first information, the values ​​of the TA adjustment step used by the terminal group 1 and the terminal group 2 are different, and the values ​​of other information are the same.

[0108] For another example, in the first information, the values ​​of the TA adjustment step length and the TA adjustment time interval used by the terminal group 1 and the terminal group 2 are different, and the values ​​of other information are the same.

[0109] Optionally, in the second embodiment, the terminal device stores the correspondence between at least part of the first information. For example, the terminal device stores the TA adjustment information corresponding to the group identifier corresponding to the terminal device, such as the group X corresponding to the terminal device and the TA adjustment step size corresponding to the group X.

[0110] Optionally, in Embodiment 2, the terminal device determines, according to the corresponding group information or group identifier, first TA adjustment information in the first information, wherein the first TA adjustment information includes at least one of the following:

[0111] The first TA adjustment step size, the first TA adjustment time interval, the first TA adjustment time point, the first triggering TA adjustment condition, and the first auxiliary adjustment uplink TA function activation indication information.

[0112] For example, UE 1 belongs to group 1, then its TA adjustment step is X, TA adjustment time interval is Y, and TA adjustment time point is Z; UE 2 belongs to group 2, then its TA adjustment step is M, and TA adjustment time interval is N.

[0113] Optionally, in Embodiment 2, the terminal device adjusts the TA according to the first TA adjustment information and the first TA. Alternatively, during the operation of the first timer, the terminal device adjusts the TA according to the first TA adjustment information and the first TA.

[0114] Optionally, during the operation of the first timer, the terminal device counts the adaptive cumulative TA adjustment amount, such as the terminal device calculates the cumulative TA adjustment amount according to the first information, and performs TA adjustment based on the cumulative adjustment amount each time the TA is adjusted.

[0115] Optionally, in the second embodiment, the terminal device may adjust the TA according to the first TA adjustment information and the first TA by:

[0116] If the first TA is the TA indicated in the TAC MAC CE or the TA indicated in the RAR, and it is the first TA adjustment, the adjusted TA = the first TA + the step size of the first TA adjustment; or,

[0117] If the first TA is the TA indicated in the TAC MAC CE or the TA indicated in the RAR, and it is the i-th TA adjustment, the adjusted TA = the first TA + the i-th TA cumulative adjustment value, where i is a positive integer and i>1; or,

[0118] If the first TA is the TA after the (i-1)th adjustment, and it is the i-th TA adjustment, the adjusted TA=the first TA+the step size of the first TA adjustment, i is a positive integer, and i>2.

[0119] For example, the UE belongs to group 1, and the parameters corresponding to group 1 in the first information are: the step size of TA adjustment is delta M, the time interval of TA adjustment is 1 minute, and the condition for triggering TA adjustment is that the difference between the two measured RSRPs is greater than the threshold N. Assuming that the TA indicated in the TAC is TA K, if the condition for triggering TA adjustment is met at time t1, that is, the difference between the two measured RSRP thresholds is greater than the threshold N, the UE automatically adjusts the uplink TA after the first time period at time t1 (the first time period>=0), and the adjusted TA=TA K (current TA)+delta M indicated in the TAC. At every TA adjustment time interval, or, at every TA adjustment time interval and when the TA adjustment condition is met, the UE performs another TA adjustment, and the adjusted TA=TA after the last adjustment+deltaM, that is, TA K indicated in the TAC+accumulated TA adjustment amount (such as the second TA adjustment, the accumulated TA adjustment amount=delta M+deltaM).

[0120] For another example, the UE belongs to group 1, and the parameters corresponding to group 1 in the first information are: the step size of TA adjustment is delta M, and the time interval of TA adjustment is 1 minute. Assuming that the TA indicated in the TAC is TAK, and the UE receives the TAC indicating TAK at time t1, the UE automatically adjusts the uplink TA after the first time duration at time t1 (the first time duration >= 0), and the adjusted TA = TAK + delta M indicated in the TAC. At every TA adjustment time interval, the UE performs another TA adjustment, and the adjusted TA = TA after the last adjustment + delta M, that is, TAK indicated in the TAC + accumulated TA adjustment amount (such as the second TA adjustment, the accumulated TA adjustment amount = delta M + delta M).

[0121] For another example, the UE belongs to group 1, and the parameters corresponding to group 1 in the first information are: the step size of TA adjustment is delta M, and the time interval of TA adjustment is 1 minute. Assuming that the TA indicated in the TAC is TAK, and the UE receives the TAC indicating TAK at time t1, the UE automatically adjusts the uplink TA after the first time duration at time t1 (the first time duration >= 0), and the adjusted TA = TAK + delta M indicated in the TAC. At every TA adjustment time interval, the UE performs a TA adjustment again, and the adjusted TA = TA after the last adjustment + delta M, that is, TAK + TA adjustment amount M indicated in the TAC.

[0122] Specifically, in the second embodiment, Figure 6As shown, it is assumed that the base station indicates the first information to UE 1 and UE 2 using broadcast or dedicated RRC signaling, in which the step size of TA adjustment is step size A corresponding to group identifier 1, the step size of TA adjustment is step size B corresponding to group identifier 2, UE 1 belongs to the group of group identifier 1, and UE 2 belongs to the group of group identifier 2. The base station sends TAC1 to UE 1, and the TAC1 indicates TA 1, and the base station sends TAC 2 to UE 2, and the TAC 2 indicates TA 2. UE 1 adjusts the uplink synchronization with the base station based on TA 1, that is, UE 1 sends the uplink information in advance according to TA 1; UE 2 adjusts the uplink synchronization with the base station based on TA 2, that is, UE 2 sends the uplink information in advance according to TA 2. After UE 1 adjusts the uplink synchronization with the base station based on TA 1, UE 1 automatically adjusts the uplink TA at an interval of T. The adjusted TA = TA 1 + step length A. UE 1 sends uplink information in advance according to TA 1 + step length A. After UE 2 adjusts the uplink synchronization with the base station based on TA 2, UE 2 automatically adjusts the uplink TA at an interval of T. The adjusted TA = TA 2 + step length B. UE 2 sends uplink information in advance according to TA 2 + step length B. UE 1 and UE 2 perform TA adjustment again at every subsequent time interval T.

[0123] Optionally, as embodiment three, the first information includes:

[0124] At least one TA adjustment information group, at least one usage order, and at least one group identifier, wherein the at least one usage order respectively indicates the usage order of the at least one TA adjustment information group, and the TA adjustment information group includes at least one of the following:

[0125] TA adjustment step size, TA adjustment time interval, TA adjustment time point, conditions for triggering TA adjustment, and auxiliary adjustment uplink TA function activation indication information.

[0126] It should be noted that the at least one group identifier and the at least one usage sequence may be in one-to-one correspondence. The at least one usage sequence may be a display indicating the usage sequence of the at least one TA adjustment information group, and the at least one usage sequence may also be indicated by a pattern.

[0127] For example, the first information includes TA adjustment information group 1, TA adjustment information group 2, use order 1, use order 2, group identifier 1 and group identifier 2; wherein group identifier 1 corresponds to use order 1, group identifier 2 corresponds to use order 2, use order 1 indicates that the use order of the two TA adjustment information groups is TA adjustment information group 1 and TA adjustment information group 2, and use order 2 indicates that the use order of the two TA adjustment information groups is TA adjustment information group 2 and TA adjustment information group 1. And TA adjustment information group 1 includes TA adjustment step 1 and TA adjustment time interval 1. TA adjustment information group 2 includes TA adjustment step 2 and TA adjustment time interval 1. Assuming that UE 1 belongs to the group with group identifier 1 and UE 2 belongs to the group with group identifier 2, UE 1 determines to use the parameters in TA adjustment information group 1 and TA adjustment information group 2 in sequence to perform TA adjustment according to use order 1; and UE 2 determines to use the parameters in TA adjustment information group 2 and TA adjustment information group 1 in sequence to perform TA adjustment according to use order 2.

[0128] For another example, the first information includes TA adjustment information group 1, TA adjustment information group 2, usage order 1, usage order 2, group identifier 1 and group identifier 2; wherein group identifier 1 corresponds to usage order 1, group identifier 2 corresponds to usage order 2, usage order 1 indicates that the usage order of the two TA adjustment information groups is TA adjustment information group 1 and TA adjustment information group 2, and usage order 2 indicates that the usage order of the two TA adjustment information groups is TA adjustment information group 2 and TA adjustment information group 1. And TA adjustment information group 1 includes TA adjustment step 1 and TA adjustment time interval 1. TA adjustment information group 2 includes TA adjustment step 2 and TA adjustment time interval 2. Assuming that UE 1 belongs to the group with group identifier 1 and UE 2 belongs to the group with group identifier 2, UE 1 determines to use the parameters in TA adjustment information group 1 and TA adjustment information group 2 in sequence to perform TA adjustment according to usage order 1; and UE 2 determines to use the parameters in TA adjustment information group 2 and TA adjustment information group 1 in sequence to perform TA adjustment according to usage order 2.

[0129] For another example, the first information includes TA adjustment information group 1, usage order 1, usage order 2, group identifier 1 and group identifier 2; wherein group identifier 1 corresponds to usage order 1, and group identifier 2 corresponds to usage order 2. TA adjustment information group 1 includes TA adjustment time interval 1, TA adjustment step 1, and TA adjustment step 2. Usage order 1 means first using TA adjustment step 1, and then using TA adjustment step 2. Usage order 2 means first using TA adjustment step 2, and then using TA adjustment step 1. Assuming that UE 1 belongs to the group with group identifier 1, and UE 2 belongs to the group with group identifier 2, UE 1 determines to use the parameters of TA adjustment information group 1 in sequence for TA adjustment according to usage order 1; and UE 2 determines to use the parameters in TA adjustment information group 1 in sequence for TA adjustment according to usage order 2.

[0130] Optionally, in Embodiment 3, the terminal device determines the first usage sequence in the at least one usage sequence according to the corresponding group information or group identifier.

[0131] Optionally, in Embodiment 3, the terminal device adjusts the TA according to the at least one TA adjustment information group, the first usage sequence and the first TA. Alternatively, during the operation of the first timer, the terminal device adjusts the TA according to the at least one TA adjustment information group, the first usage sequence and the first TA.

[0132] Optionally, in the third embodiment, the terminal device may adjust the TA according to the at least one TA adjustment information group, the first usage sequence and the first TA by:

[0133] If the first TA is the TA indicated in the TAC MAC CE or the TA indicated in the RAR, and it is the first TA adjustment, the adjusted TA = the first TA + the TA adjustment step size; or,

[0134] If the first TA is the TA after the (i-1)th adjustment, and it is the i-th TA adjustment, the adjusted TA=the first TA+the step size of the TA adjustment, i is a positive integer, and i>2.

[0135] Optionally, in the above-mentioned Embodiment 2 and Embodiment 3, the group information or group identifier corresponding to the terminal device is configured by the network device, or the group information or group identifier corresponding to the terminal device is preset, or the group information or group identifier corresponding to the terminal device is determined by the terminal device.

[0136] It should be noted that the group information or group identifier corresponding to the terminal device can be understood as: the terminal device belongs to the terminal group indicated by the corresponding group information, or the terminal device belongs to the terminal group identified by the corresponding group identifier.

[0137] Optionally, in the above-mentioned Embodiment 2 and Embodiment 3, when indicating the group identifier, the network device may indicate the corresponding TA adjustment information, or when indicating at least part of the TA adjustment information, the network device may indicate the group identifier.

[0138] For example, for network device indication group 1, the corresponding TA adjustment step is A, and the TA adjustment time interval is K; for network device indication group 2, the corresponding TA adjustment step is B, and the TA adjustment time interval is L.

[0139] For example, the network device indicates group 1, and the corresponding TA adjustment step is A; the network device indicates group 2, and the corresponding TA adjustment step is B. The network device indicates that the TA adjustment time interval is L. Since the group identifier is not indicated, it means that the TA adjustment time interval values ​​of group 1 and group 2 are the same.

[0140] Optionally, in the above-mentioned embodiments 2 and 3, the group information or group identifier corresponding to the terminal device may also be determined based on a first corresponding relationship, wherein the first corresponding relationship is used to indicate a corresponding relationship between at least one group identifier and at least one terminal identifier, and the at least one terminal identifier includes the identifier of the terminal device.

[0141] Optionally, the first corresponding relationship is determined by the network device or the terminal device, such as pre-configured or pre-configured according to status information of the terminal device and / or the network device, or the first corresponding relationship is preset;

[0142] The status information includes but is not limited to at least one of the following:

[0143] Positioning information, velocity information, motion trajectory, star track, ephemeris, measurement results, and measurement information.

[0144] It should be noted that, for the terminal device, the measurement result in the status information may be the measurement result of the terminal device on the network device, or the measurement result of the terminal device on the serving cell or the neighboring cell. For the network device, the measurement result in the status information may be the measurement result of the network device on the terminal device, or the measurement result of the network device on the serving cell or the neighboring cell of the terminal device. Optionally, the measurement result in the status information may be Reference Signal Receiving Power (RSRP), Reference Signal Receiving Quality (RSRQ), Received Signal Strength Indication (RSSI), Signal to Interference plus Noise Ratio (SINR), path loss, etc.

[0145] Similarly, for the terminal device, the measurement information in the status information may be the measurement configuration information of the terminal device for the network device, or the measurement configuration information of the terminal device for the serving cell or the neighboring cell. For the network device, the measurement information in the status information may be the measurement configuration information of the network device for the terminal device, or the measurement configuration information of the network device for the serving cell or the neighboring cell of the terminal device.

[0146] Optionally, the group information or group identifier corresponding to the terminal device is determined or predefined by the terminal device or the network device.

[0147] Specifically, the group information or group identifier corresponding to the terminal device is determined or predefined by the terminal device or the network device according to its state information;

[0148] The status information includes but is not limited to at least one of the following:

[0149] Positioning information, velocity information, motion trajectory, star track, ephemeris, measurement results, and measurement information.

[0150] For example, the network device sends first configuration information to the terminal device, wherein the first configuration information is used to configure the group information or group identifier corresponding to the terminal device, and / or the first configuration information is used to configure a first correspondence relationship, and the first correspondence relationship is used to indicate the correspondence between at least one group identifier and at least one terminal identifier, and the at least one terminal identifier includes the identifier of the terminal device.

[0151] Therefore, compared with the first embodiment, the second and third embodiments configure different TA applicability adjustment parameters for different terminal groups, and the network device can more flexibly match the needs of the terminal device for different positions, speeds, motion trajectories, star tracks, ephemeris, measurement results, measurement information, etc., provide more precise adjustment granularity, and better ensure the synchronization of the terminal device and the network device. Furthermore, different parameters can be used for different terminal groups and at different times, so that different adjustment values ​​are given in different situations, which can more effectively match the needs of TA changes.

[0152] Furthermore, in the third embodiment, all UEs within the cell range can use the multiple sets of TA adjustment information, that is, each UE can use multiple sets of TA adjustment information, rather than different users using different TA adjustment information.

[0153] Optionally, as embodiment 4, the first information includes:

[0154] At least one TA adjustment information group and a TA adjustment sequence, wherein the TA adjustment sequence indicates a usage order of the at least one TA adjustment information group, and the TA adjustment information group includes at least one of the following:

[0155] TA adjustment step size, TA adjustment time interval, TA adjustment time point, conditions for triggering TA adjustment, and auxiliary adjustment uplink TA function activation indication information.

[0156] It should be noted that the TA adjustment sequence may be a display indicating the use order of the at least one TA adjustment information group, and the TA adjustment sequence may also be indicated by a pattern to indicate the use order of the at least one TA adjustment information group.

[0157] Optionally, in Embodiment 4, the terminal device adjusts the TA according to the at least one TA adjustment information group, the TA adjustment sequence and the first TA. Alternatively, during the operation of the first timer, the terminal device adjusts the TA according to the at least one TA adjustment information group, the TA adjustment sequence and the first TA.

[0158] Optionally, in the fourth embodiment, the terminal device may adjust the TA according to the at least one TA adjustment information group, the TA adjustment sequence and the first TA in the following manner:

[0159] If the first TA is the TA indicated in the TAC MAC CE or the TA indicated in the RAR, and it is the first TA adjustment, the adjusted TA = the first TA + the TA adjustment step size; or,

[0160] If the first TA is the TA after the (i-1)th adjustment, and it is the i-th TA adjustment, the adjusted TA=the first TA+the step size of the TA adjustment, i is a positive integer, and i>2.

[0161] Therefore, in embodiment 4, all UEs within the cell range can use these multiple sets of TA adjustment information, and there is no need to group the UEs. That is, each UE can use multiple sets of TA adjustment information, rather than different users using different TA adjustment information. Compared with embodiment 3, the complexity of UE grouping can be avoided.

[0162] It should be noted that, in the first information, the step size of the TA adjustment may also be referred to as the adjustment amount of each TA adjustment.

[0163] Optionally, in the first information, the time interval for adjusting the TA may refer to how often the terminal device performs a TA adjustment.

[0164] Optionally, in the first information, the time point of the TA adjustment may refer to the time point when the terminal device performs the TA adjustment for the first time or the time point when the terminal device performs the TA adjustment each time.

[0165] Optionally, in the first information, the condition for triggering TA adjustment includes at least one of the following:

[0166] A difference between two positions measured by the terminal device is greater than a threshold value, a difference between two reference signal receiving powers (RSRP) measured by the terminal device is greater than a threshold value, and a speed of the terminal device is greater than a threshold value.

[0167] It should be noted that the difference in the positions measured twice by the terminal device may refer to the difference in the positions between the terminal device and the base station when the terminal device measures twice; the difference in the positions measured twice by the terminal device may also refer to the difference in the positions of the terminal device itself when the terminal device measures twice; the difference in the positions measured twice by the terminal device may also refer to the difference in the positions between the terminal device and the reference coordinates when the terminal device measures twice.

[0168] Therefore, in an embodiment of the present application, the terminal device can adaptively adjust the TA based on the first information configured by the network device for adjusting the TA, thereby avoiding the overhead of frequent TAC indications and the problem of inapplicable TA adjustment amount (when the terminal device receives the TAC, the TA may have been inaccurate due to time delay), thereby ensuring the synchronization of the terminal device and the network device.

[0169] Figure 7 FIG. 3 shows a schematic block diagram of a terminal device 300 according to an embodiment of the present application. Figure 7 As shown, the terminal device 300 includes:

[0170] The communication unit 310 is used to receive first information sent by a network device, where the first information is used to adjust the TA.

[0171] Optionally, the first information includes at least one of the following information:

[0172] TA adjustment step size, TA adjustment time interval, TA adjustment time point, conditions for triggering TA adjustment, and auxiliary adjustment uplink TA function activation indication information.

[0173] Optionally, the terminal device 300 further includes:

[0174] The processing unit 320 is configured to adjust the TA according to the first information and the first TA.

[0175] Optionally, the first TA is one of the following:

[0176] TAC TA indicated in MAC CE, TA indicated in RAR, and TA after the last adjustment.

[0177] Optionally, if the first TA is the TA indicated in the TAC MAC CE or the TA indicated in the RAR, and it is the first TA adjustment, the adjusted TA=the first TA+the step size of the TA adjustment; or,

[0178] If the first TA is the TA indicated in the TAC MAC CE or the TA indicated in the RAR, and it is the i-th TA adjustment, the adjusted TA = the first TA + the i-th TA cumulative adjustment value, where i is a positive integer and i>1; or,

[0179] If the first TA is the TA after the (i-1)th adjustment, and it is the i-th TA adjustment, the adjusted TA=the first TA+the step size of the TA adjustment, i is a positive integer, and i>2.

[0180] Optionally, the first information includes at least one of the following information:

[0181] At least one TA adjustment step, at least one TA adjustment time interval, at least one TA adjustment time point, at least one condition for triggering TA adjustment, at least one group identifier, and at least one auxiliary adjustment uplink TA function activation indication information.

[0182] Optionally, at least part of the information in the first information satisfies a one-to-one correspondence.

[0183] Optionally, at least part of the first information satisfies a one-to-many correspondence relationship.

[0184] Optionally, at least one of the following information used by the terminal groups identified by different group identifiers in the first information has different values:

[0185] TA adjustment step size, TA adjustment time interval, TA adjustment time point, conditions for triggering TA adjustment, and auxiliary adjustment uplink TA function activation indication information.

[0186] Optionally, the terminal device 300 further includes:

[0187] The processing unit 320 is configured to determine the first TA adjustment information in the first information according to the corresponding group information or group identifier,

[0188] The first TA adjustment information includes at least one of the following:

[0189] The first TA adjustment step size, the first TA adjustment time interval, the first TA adjustment time point, the first TA adjustment triggering condition, and the first auxiliary adjustment uplink TA function activation indication information.

[0190] Optionally, the processing unit 320 is further configured to adjust the TA according to the first TA adjustment information and the first TA.

[0191] Optionally, the first TA is one of the following:

[0192] TAC TA indicated in MAC CE, TA indicated in RAR, and TA after the last adjustment.

[0193] Optionally, if the first TA is the TA indicated in the TAC MAC CE or the TA indicated in the RAR, and it is the first TA adjustment, the adjusted TA=the first TA+the step size of the first TA adjustment; or,

[0194] If the first TA is the TA indicated in the TAC MAC CE or the TA indicated in the RAR, and it is the i-th TA adjustment, the adjusted TA = the first TA + the i-th TA cumulative adjustment value, where i is a positive integer and i>1; or,

[0195] If the first TA is the TA after the (i-1)th adjustment, and it is the i-th TA adjustment, the adjusted TA=the first TA+the step size of the first TA adjustment, i is a positive integer, and i>2.

[0196] Optionally, the first information includes:

[0197] At least one TA adjustment information group, at least one usage order, and at least one group identifier, wherein the at least one usage order respectively indicates the usage order of the at least one TA adjustment information group, and the TA adjustment information group includes at least one of the following:

[0198] TA adjustment step size, TA adjustment time interval, TA adjustment time point, conditions for triggering TA adjustment, and auxiliary adjustment uplink TA function activation indication information.

[0199] Optionally, the terminal device 300 further includes:

[0200] The processing unit 320 is configured to determine a first usage sequence in the at least one usage sequence according to the corresponding group information or group identifier.

[0201] Optionally, the processing unit 320 is further configured to adjust the TA according to the at least one TA adjustment information group, the first usage sequence and the first TA.

[0202] Optionally, the first TA is one of the following:

[0203] TAC TA indicated in MAC CE, TA indicated in RAR, TA after the last adjustment.

[0204] Optionally, if the first TA is the TA indicated in the TAC MAC CE or the TA indicated in the RAR, and it is the first TA adjustment, the adjusted TA=the first TA+the step size of the TA adjustment; or,

[0205] If the first TA is the TA after the (i-1)th adjustment, and it is the i-th TA adjustment, the adjusted TA=the first TA+the step size of the TA adjustment, i is a positive integer, and i>2.

[0206] Optionally, the first information includes:

[0207] At least one TA adjustment information group and a TA adjustment sequence, wherein the TA adjustment sequence indicates a usage order of the at least one TA adjustment information group, and the TA adjustment information group includes at least one of the following:

[0208] TA adjustment step size, TA adjustment time interval, TA adjustment time point, conditions for triggering TA adjustment, and auxiliary adjustment uplink TA function activation indication information.

[0209] Optionally, the terminal device 300 further includes:

[0210] The processing unit 320 is configured to adjust the TA according to the at least one TA adjustment information group, the TA adjustment sequence and the first TA.

[0211] Optionally, the first TA is one of the following:

[0212] TAC TA indicated in MAC CE, TA indicated in RAR, and TA after the last adjustment.

[0213] Optionally, if the first TA is the TA indicated in the TAC MAC CE or the TA indicated in the RAR, and it is the first TA adjustment, the adjusted TA=the first TA+the step size of the TA adjustment; or,

[0214] If the first TA is the TA after the (i-1)th adjustment, and it is the i-th TA adjustment, the adjusted TA=the first TA+the step size of the TA adjustment, i is a positive integer, and i>2.

[0215] Optionally, the group information or group identifier corresponding to the terminal device 300 is configured by the network device, or the group information or group identifier corresponding to the terminal device 300 is preset.

[0216] Optionally, the group information or group identifier corresponding to the terminal device 300 is determined based on a first corresponding relationship, wherein the first corresponding relationship is used to indicate a corresponding relationship between at least one group identifier and at least one terminal identifier, and the at least one terminal identifier includes an identifier of the terminal device.

[0217] Optionally, the first corresponding relationship is configured or pre-configured by the network device, or the first corresponding relationship is preset, or the first corresponding relationship is determined by the terminal device.

[0218] Optionally, the first corresponding relationship is determined according to status information of the network device and / or the terminal device;

[0219] The status information includes at least one of the following:

[0220] Positioning information, velocity information, motion trajectory, star track, ephemeris, measurement results, and measurement information.

[0221] Optionally, the group information or group identifier corresponding to the terminal device 300 is determined or predefined by the terminal device and / or the network device.

[0222] Optionally, the group information or group identifier corresponding to the terminal device 300 is determined or predefined by the terminal device and / or the network device according to its state information;

[0223] The status information includes at least one of the following:

[0224] Positioning information, velocity information, motion trajectory, star track, ephemeris, measurement results, and measurement information.

[0225] Optionally, the condition for triggering TA adjustment includes at least one of the following:

[0226] The difference between the positions measured twice by the terminal device is greater than the threshold value, the difference between the RSRP measured twice by the terminal device is greater than the threshold value, and the speed of the terminal device is greater than the threshold value.

[0227] Optionally, the terminal device 300 further includes:

[0228] The processing unit 320 is configured to adjust the TA according to the first information and the first TA during the operation of the first timer.

[0229] Optionally, the communication unit 310 is further configured to receive second information sent by the network device, where the second information indicates a second TA;

[0230] The processing unit 320 is further configured to adjust uplink synchronization according to the second TA;

[0231] The first timer is started when the second information is received; or the first timer is started when the uplink synchronization is adjusted according to the second TA.

[0232] Optionally, the second information is information carrying TAC MAC CE or DL-SCH, or the second information is RAR.

[0233] Optionally, the communication unit 310 is further configured to receive third information during the running of the first timer, and the third information indicates a third TA;

[0234] The processing unit 320 is further configured to adjust uplink synchronization according to the third TA.

[0235] Optionally, the third information is information carrying TAC MAC CE or DL-SCH, or the third information is RAR.

[0236] Optionally, the first TA is one of the following:

[0237] TAC TA indicated in MAC CE, TA indicated in RAR, and TA after the last adjustment.

[0238] Optionally, the communication unit 310 is specifically configured to:

[0239] The first information is received by the network device through broadcast or dedicated RRC signaling.

[0240] Optionally, the communication unit 310 is further used to send first indication information to the network device, where the first indication information is used to indicate that the terminal device 300 supports a capability of TA adjustment.

[0241] Optionally, the terminal device 300 further includes:

[0242] The processing unit 320 is configured to ignore or skip the first information if the terminal device 300 does not support the TA adjustment capability.

[0243] It should be understood that the terminal device 300 according to the embodiment of the present application may correspond to the terminal device in the method embodiment of the present application, and the above and other operations and / or functions of each unit in the terminal device 300 are respectively to implement Figure 4 For the sake of brevity, the corresponding process of the terminal device in the method 200 is not repeated here.

[0244] Figure 8 FIG. 4 shows a schematic block diagram of a network device 400 according to an embodiment of the present application. Figure 8 As shown, the network device 400 includes:

[0245] The communication unit 410 is used to send first information to the terminal device, where the first information is used to adjust the timing advance TA.

[0246] Optionally, the first information includes at least one of the following information:

[0247] TA adjustment step size, TA adjustment time interval, TA adjustment time point trigger, TA adjustment conditions, and auxiliary adjustment uplink TA function activation indication information.

[0248] Optionally, the first information includes at least one of the following information:

[0249] At least one TA adjustment step, at least one TA adjustment time interval, at least one TA adjustment time point, at least one condition for triggering TA adjustment, at least one group identifier, and at least one auxiliary adjustment uplink TA function activation indication information.

[0250] Optionally, at least part of the information in the first information satisfies a one-to-one correspondence.

[0251] Optionally, at least part of the first information satisfies a one-to-many correspondence relationship.

[0252] Optionally, at least one of the following information used by the terminal groups identified by different group identifiers in the first information has different values:

[0253] TA adjustment step size, TA adjustment time interval, TA adjustment time point, conditions for triggering TA adjustment, and auxiliary adjustment uplink TA function activation indication information.

[0254] Optionally, the first information includes:

[0255] At least one TA adjustment information group, at least one usage order, and at least one group identifier, wherein the at least one usage order respectively indicates the usage order of the at least one TA adjustment information group, and the TA adjustment information group includes at least one of the following:

[0256] TA adjustment step size, TA adjustment time interval, TA adjustment time point, conditions for triggering TA adjustment, and auxiliary adjustment uplink TA function activation indication information.

[0257] Optionally, the first information includes:

[0258] At least one TA adjustment information group and a TA adjustment sequence, wherein the TA adjustment sequence indicates a usage order of the at least one TA adjustment information group, and the TA adjustment information group includes at least one of the following:

[0259] TA adjustment step size, TA adjustment time interval, TA adjustment time point, conditions for triggering TA adjustment, and auxiliary adjustment uplink TA function activation indication information.

[0260] Optionally, the communication unit 410 is also used to send first configuration information to the terminal device, wherein the first configuration information is used to configure the group information or group identifier corresponding to the terminal device, or the first configuration information is used to configure a first corresponding relationship, and the first corresponding relationship is used to indicate the corresponding relationship between the at least one group identifier and the at least one terminal identifier, and the at least one terminal identifier includes the identifier of the terminal device.

[0261] Optionally, the first corresponding relationship is configured by the network device 400 according to its state information, wherein the state information includes at least one of the following:

[0262] Positioning information, velocity information, motion trajectory, star track, ephemeris, measurement results, and measurement information.

[0263] Optionally, the condition for triggering TA adjustment includes at least one of the following:

[0264] The difference between the positions measured twice by the terminal device is greater than the threshold value, the difference between the RSRP measured twice by the terminal device is greater than the threshold value, and the speed of the terminal device is greater than the threshold value.

[0265] Optionally, the communication unit 410 is further used to send second information to the terminal device, where the second information indicates a second TA, and the second TA is used by the terminal device to adjust uplink synchronization.

[0266] Optionally, the second information is information carrying TAC MAC CE or DL-SCH, or the second information is RAR.

[0267] Optionally, the communication unit 410 is further used to send second configuration information to the terminal device, where the second configuration information is used to configure a first timer, wherein during the operation of the first timer, the terminal device adjusts the TA according to the first information and the first TA.

[0268] Optionally, the first TA is one of the following:

[0269] TAC TA indicated in MAC CE, TA indicated in RAR, and TA after the last adjustment.

[0270] Optionally, when the second information is received, the first timer is started; or,

[0271] At the moment when uplink synchronization is adjusted according to the second TA, the first timer is started.

[0272] Optionally, the communication unit 410 is further used to send third information to the terminal device during the operation of the first timer, and the third information indicates a third TA, and the third TA is used for the terminal device to adjust uplink synchronization.

[0273] Optionally, the third information is information carrying TAC MAC CE or DL-SCH, or the third information is RAR.

[0274] Optionally, the communication unit 410 is specifically configured to:

[0275] The first information is sent to the terminal device via broadcast or dedicated RRC signaling.

[0276] Optionally, the communication unit 410 is further used to receive first indication information sent by the terminal device, where the first indication information is used to indicate a capability of the terminal device to support TA adjustment.

[0277] It should be understood that the network device 400 according to the embodiment of the present application may correspond to the network device in the method embodiment of the present application, and the above and other operations and / or functions of each unit in the network device 400 are respectively to implement Figure 4 For the sake of brevity, the corresponding processes of the network device in the method 200 are not described in detail here.

[0278] Fig. 9 It is a schematic structural diagram of a communication device 500 provided in an embodiment of the present application. Fig. 9 The communication device 500 shown includes a processor 510, and the processor 510 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0279] Alternatively, if Fig. 9As shown, the communication device 500 may further include a memory 520. The processor 510 may call and run a computer program from the memory 520 to implement the method in the embodiment of the present application.

[0280] The memory 520 may be a separate device independent of the processor 510 , or may be integrated into the processor 510 .

[0281] Alternatively, if Fig. 9 As shown, the communication device 500 may further include a transceiver 530, and the processor 510 may control the transceiver 530 to communicate with other devices, specifically, may send information or data to other devices, or receive information or data sent by other devices.

[0282] The transceiver 530 may include a transmitter and a receiver. The transceiver 530 may further include an antenna, and the number of the antennas may be one or more.

[0283] Optionally, the communication device 500 may specifically be a network device or a base station in an embodiment of the present application, and the communication device 500 may implement the corresponding processes implemented by the network device or the base station in each method in the embodiment of the present application, which will not be described in detail here for the sake of brevity.

[0284] Optionally, the communication device 500 may specifically be a mobile terminal / terminal device of an embodiment of the present application, and the communication device 500 may implement the corresponding processes implemented by the mobile terminal / terminal device in each method of the embodiment of the present application, which will not be described again for the sake of brevity.

[0285] Fig.10 It is a schematic structural diagram of the device of an embodiment of the present application. Fig.10 The device 600 shown includes a processor 610, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0286] Alternatively, if Fig.10 As shown, the apparatus 600 may further include a memory 620. The processor 610 may call and run a computer program from the memory 620 to implement the method in the embodiment of the present application.

[0287] The memory 620 may be a separate device independent of the processor 610 , or may be integrated into the processor 610 .

[0288] Optionally, the apparatus 600 may further include an input interface 630. The processor 610 may control the input interface 630 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0289] Optionally, the apparatus 600 may further include an output interface 640. The processor 610 may control the output interface 640 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0290] Optionally, the device can be applied to the network equipment or base station in the embodiments of the present application, and the device can implement the corresponding processes implemented by the network equipment or base station in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0291] Optionally, the apparatus may be applied to a mobile terminal / terminal device in an embodiment of the present application, and the apparatus may implement corresponding processes implemented by the mobile terminal / terminal device in each method of the embodiment of the present application, which will not be described in detail here for the sake of brevity.

[0292] Optionally, the device mentioned in the embodiments of the present application may also be a chip, for example, a system-on-chip, a system-on-chip, a chip system, or a system-on-chip chip.

[0293] Fig.11 is a schematic block diagram of a communication system 700 provided in an embodiment of the present application. Fig.11 As shown, the communication system 700 includes a terminal device 710 and a network device 720 .

[0294] Among them, the terminal device 710 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 720 can be used to implement the corresponding functions implemented by the network device or base station in the above method. For the sake of brevity, they are not repeated here.

[0295] It should be understood that the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by the hardware integrated logic circuit or software instructions in the processor. The above processor can be a general processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor are combined and performed. The software module can be located in a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, and other mature storage media in the art. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0296] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0297] It should be understood that the above-mentioned memory is exemplary but not restrictive. For example, the memory in the embodiments of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.

[0298] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.

[0299] Optionally, the computer-readable storage medium can be applied to the network device or base station in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device or base station in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0300] Optionally, the computer-readable storage medium can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0301] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0302] Optionally, the computer program product can be applied to the network device or base station in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the network device or base station in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0303] Optionally, the computer program product can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0304] The embodiment of the present application also provides a computer program.

[0305] Optionally, the computer program can be applied to the network device or base station in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the network device or base station in the various methods of the embodiments of the present application. For the sake of brevity, they are not described here.

[0306] Optionally, the computer program can be applied to the mobile terminal / terminal device in the embodiments of the present application. When the computer program runs on the computer, the computer executes the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0307] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0308] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0309] In the several embodiments provided in the present 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 only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, 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.

[0310] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0311] 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.

[0312] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. In view of such an understanding, the technical solution of the present application can be embodied in the form of a software product in essence or in other words, the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0313] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A wireless communication method, characterized in that: include: The terminal device receives first information sent by the network device, where the first information is used to adjust the timing advance TA, and the first information includes a step size of the TA adjustment and a time point of the TA adjustment; The terminal device adjusts the TA according to the first information and the first TA; wherein the first information further includes at least one of the following information: a time interval for TA adjustment, a condition for triggering TA adjustment, and indication information for enabling an auxiliary adjustment uplink TA function; The terminal device obtains the first TA in different ways under different states; if the first TA is the TA indicated in the TAC MAC CE or the TA indicated in the RAR, and it is the first TA adjustment, the adjusted TA = the first TA + the step size of the TA adjustment, or, if the first TA is the TA indicated in the TAC MAC CE or the TA indicated in the RAR, and it is the i-th TA adjustment, the adjusted TA = the first TA + the i-th TA cumulative adjustment value, i is a positive integer, and i>1, or, if the first TA is the TA after the i-1th adjustment, and it is the i-th TA adjustment, the adjusted TA = the first TA + the step size of the TA adjustment, i is a positive integer, and i>2.

2. The method according to claim 1, characterized in that The first information also includes: At least one TA adjustment information group, at least one usage order, and at least one group identifier, wherein the at least one usage order respectively indicates the usage order of the at least one TA adjustment information group, and the TA adjustment information group includes a step size of TA adjustment, a time point of TA adjustment, and at least one of the following: The time interval for TA adjustment, the conditions for triggering TA adjustment, and the indication information for starting the auxiliary adjustment uplink TA function.

3. The method according to claim 2, characterized in that The method further comprises: The terminal device determines a first usage sequence in the at least one usage sequence according to the corresponding group information or group identifier.

4. The method according to claim 3, characterized in that The method further comprises: The terminal device adjusts the TA according to the at least one TA adjustment information group, the first usage order and the first TA.

5. The method according to claim 4, characterized in that The first TA is one of the following: The TA indicated in the TAC carried in the MAC CE, the TA indicated in the RAR, and the TA after the last adjustment.

6. The method according to claim 4 or 5, characterized in that: If the first TA is the TA indicated in the TAC MAC CE or the TA indicated in the RAR, and it is the first TA adjustment, the adjusted TA = the first TA + the TA adjustment step size; or, If the first TA is the TA after the (i-1)th adjustment and it is the i-th TA adjustment, the adjusted TA=the first TA+the step size of the TA adjustment, i is a positive integer, and i>2.

7. The method according to claim 1, characterized in that The first information also includes: At least one TA adjustment information group and a TA adjustment sequence, wherein the TA adjustment sequence indicates a usage order of the at least one TA adjustment information group, and the TA adjustment information group includes a TA adjustment step, a TA adjustment time point, and at least one of the following: The time interval for TA adjustment, the conditions for triggering TA adjustment, and the indication information for starting the auxiliary adjustment uplink TA function.

8. The method according to claim 7, characterized in that The method further comprises: The terminal device adjusts the TA according to the at least one TA adjustment information group, the TA adjustment sequence and the first TA.

9. The method according to claim 8, characterized in that The first TA is one of the following: TAC TA indicated in MAC CE, TA indicated in RAR, and TA after the last adjustment.

10. The method according to claim 8 or 9, characterized in that: If the first TA is the TA indicated in the TAC MAC CE or the TA indicated in the RAR, and it is the first TA adjustment, the adjusted TA = the first TA + the TA adjustment step size; or, If the first TA is the TA after the (i-1)th adjustment and it is the i-th TA adjustment, the adjusted TA=the first TA+the step size of the TA adjustment, i is a positive integer, and i>2.

11. The method according to any one of claims 3 to 6, characterized in that The group information or group identification corresponding to the terminal device is configured by the network device, or the group information or group identification corresponding to the terminal device is preset.

12. The method according to any one of claims 3 to 6, characterized in that The group information or group identifier corresponding to the terminal device is determined based on a first corresponding relationship, wherein the first corresponding relationship is used to indicate a corresponding relationship between at least one group identifier and at least one terminal identifier, and the at least one terminal identifier includes an identifier of the terminal device.

13. The method according to claim 12, characterized in that The first corresponding relationship is configured or pre-configured by the network device, or the first corresponding relationship is preset, or the first corresponding relationship is determined by the terminal device.

14. The method according to claim 13, characterized in that The first corresponding relationship is determined according to the status information of the network device and / or the terminal device; The status information includes at least one of the following: Positioning information, velocity information, motion trajectory, star track, ephemeris, measurement results, and measurement information.

15. The method according to any one of claims 3 to 6, characterized in that The group information or group identifier corresponding to the terminal device is determined or predefined by the terminal device and / or the network device.

16. The method according to claim 15, characterized in that The group information or group identifier corresponding to the terminal device is determined or predefined by the terminal device and / or the network device according to its state information; The status information includes at least one of the following: Positioning information, velocity information, motion trajectory, star track, ephemeris, measurement results, and measurement information.

17. The method according to any one of claims 2 to 16, characterized in that The condition for triggering TA adjustment includes at least one of the following: The difference between the positions measured twice by the terminal device is greater than the threshold value, the difference between the reference signal received power RSRP measured twice by the terminal device is greater than the threshold value, and the speed of the terminal device is greater than the threshold value.

18. The method according to any one of claims 1 to 17, characterized in that The method further comprises: During the running of the first timer, the terminal device adjusts the TA according to the first information and the first TA.

19. The method according to claim 18, characterized in that The method further comprises: The terminal device receives second information sent by the network device, where the second information indicates a second TA; The terminal device adjusts uplink synchronization according to the second TA; The first timer is started when the second information is received; or the first timer is started when the uplink synchronization is adjusted according to the second TA.

20. The method according to claim 19, characterized in that The second information is information carrying TAC MAC CE or downlink shared channel DL-SCH, or the second information is RAR.

21. The method according to any one of claims 18 to 20, characterized in that The method further comprises: The terminal device receives third information during the running of the first timer, and the third information indicates a third TA; The terminal device adjusts uplink synchronization according to the third TA.

22. The method according to claim 21, characterized in that The third information is information carrying TAC MAC CE or DL-SCH, or the third information is RAR.

23. The method according to any one of claims 18 to 22, characterized in that The first TA is one of the following: TAC TA indicated in MAC CE, TA indicated in RAR, and TA after the last adjustment.

24. The method according to any one of claims 1 to 23, characterized in that The terminal device receives first information sent by the network device, including: The terminal device receives the first information sent by the network device via broadcast or dedicated radio resource control RRC signaling.

25. The method according to any one of claims 1 to 24, characterized in that The method further comprises: The terminal device sends first indication information to the network device, where the first indication information is used to indicate the terminal device's ability to support TA adjustment.

26. The method according to any one of claims 1 to 25, characterized in that The method further comprises: If the terminal device does not support the TA adjustment capability, the terminal device ignores or skips the first information.

27. A wireless communication method, characterized in that: include: The network device sends first information to the terminal device, the first information is used to adjust the timing advance TA, and the first information includes the step size of the TA adjustment and the time point of the TA adjustment; wherein the first information and the first TA are used by the terminal device to adjust the TA; the first information also includes at least one of the following information: the time interval for TA adjustment, the condition for triggering TA adjustment, and the indication information of starting the auxiliary adjustment uplink TA function; The first TA is obtained in different ways under different states; if the first TA is the TA indicated in the TAC MAC CE or the TA indicated in the RAR, and it is the first TA adjustment, the adjusted TA = the first TA + the step size of the TA adjustment, or, if the first TA is the TA indicated in the TAC MAC CE or the TA indicated in the RAR, and it is the i-th TA adjustment, the adjusted TA = the first TA + the i-th TA cumulative adjustment value, i is a positive integer, and i>1, or, if the first TA is the TA after the i-1-th adjustment, and it is the i-th TA adjustment, the adjusted TA = the first TA + the step size of the TA adjustment, i is a positive integer, and i>2.

28. The method according to claim 27, characterized in that The first information also includes: At least one TA adjustment information group, at least one usage order, and at least one group identifier, wherein the at least one usage order respectively indicates the usage order of the at least one TA adjustment information group, and the TA adjustment information group includes a step size of TA adjustment, a time point of TA adjustment, and at least one of the following: The time interval for TA adjustment, the conditions for triggering TA adjustment, and the indication information for starting the auxiliary adjustment uplink TA function.

29. The method according to claim 27, characterized in that The first information also includes: At least one TA adjustment information group and a TA adjustment sequence, wherein the TA adjustment sequence indicates a usage order of the at least one TA adjustment information group, and the TA adjustment information group includes a TA adjustment step, a TA adjustment time point, and at least one of the following: The time interval for TA adjustment, the conditions for triggering TA adjustment, and the indication information for starting the auxiliary adjustment uplink TA function.

30. The method according to claim 28, characterized in that The method further comprises: The network device sends first configuration information to the terminal device, wherein the first configuration information is used to configure the group information or group identifier corresponding to the terminal device, or the first configuration information is used to configure a first corresponding relationship, and the first corresponding relationship is used to indicate the corresponding relationship between the at least one group identifier and the at least one terminal identifier, and the at least one terminal identifier includes the identifier of the terminal device.

31. The method according to claim 30, characterized in that The first corresponding relationship is configured by the network device according to its state information, wherein the state information includes at least one of the following: Positioning information, velocity information, motion trajectory, star track, ephemeris, measurement results, and measurement information.

32. The method according to any one of claims 28 to 31, characterized in that The condition for triggering TA adjustment includes at least one of the following: The difference between the positions measured twice by the terminal device is greater than the threshold value, the difference between the reference signal received power RSRP measured twice by the terminal device is greater than the threshold value, and the speed of the terminal device is greater than the threshold value.

33. The method according to any one of claims 27 to 32, characterized in that The method further comprises: The network device sends second information to the terminal device, where the second information indicates a second TA, and the second TA is used by the terminal device to adjust uplink synchronization.

34. The method according to claim 33, characterized in that The second information is information of a media access control element MAC CE carrying a timing advance command TAC or a downlink shared channel DL-SCH, or the second information is a random access response RAR.

35. The method according to claim 33 or 34, characterized in that The method further comprises: The network device sends second configuration information to the terminal device, where the second configuration information is used to configure a first timer, wherein during the operation of the first timer, the terminal device adjusts the TA according to the first information and the first TA.

36. The method according to claim 35, characterized in that The first TA is one of the following: TAC TA indicated in MAC CE, TA indicated in RAR, and TA after the last adjustment.

37. The method according to claim 35 or 36, characterized in that When the second information is received, the first timer is started; or, At the moment when uplink synchronization is adjusted according to the second TA, the first timer is started.

38. The method according to any one of claims 35 to 37, characterized in that The method further comprises: During the operation of the first timer, the network device sends third information to the terminal device, and the third information indicates a third TA, and the third TA is used by the terminal device to adjust uplink synchronization.

39. The method according to claim 38, characterized in that The third information is information carrying TAC MAC CE or DL-SCH, or the third information is RAR.

40. The method according to any one of claims 27 to 39, characterized in that The network device sends first information to the terminal device, including: The network device sends the first information to the terminal device via broadcast or dedicated radio resource control RRC signaling.

41. The method according to any one of claims 27 to 40, characterized in that The method further comprises: The network device receives first indication information sent by the terminal device, where the first indication information is used to indicate the terminal device's ability to support TA adjustment.

42. A terminal device, characterized in that: include: A communication unit, configured to receive first information sent by a network device, wherein the first information is used to adjust a timing advance TA, and the first information includes a step size of the TA adjustment and a time point of the TA adjustment; A processing unit, configured to adjust the TA according to the first information and the first TA; wherein the first information further includes at least one of the following information: a time interval for TA adjustment, a condition for triggering TA adjustment, and indication information for enabling an auxiliary adjustment uplink TA function; The first TA is obtained in different ways under different states; if the first TA is the TA indicated in the TAC MAC CE or the TA indicated in the RAR, and it is the first TA adjustment, the adjusted TA = the first TA + the step size of the TA adjustment, or, if the first TA is the TA indicated in the TAC MAC CE or the TA indicated in the RAR, and it is the i-th TA adjustment, the adjusted TA = the first TA + the i-th TA cumulative adjustment value, i is a positive integer, and i>1, or, if the first TA is the TA after the i-1-th adjustment, and it is the i-th TA adjustment, the adjusted TA = the first TA + the step size of the TA adjustment, i is a positive integer, and i>2.

43. The terminal device according to claim 42, characterized in that: The first information also includes: At least one TA adjustment information group, at least one usage order, and at least one group identifier, wherein the at least one usage order respectively indicates the usage order of the at least one TA adjustment information group, and the TA adjustment information group includes a step size of TA adjustment, a time point of TA adjustment, and at least one of the following: The time interval for TA adjustment, the conditions for triggering TA adjustment, and the indication information for starting the auxiliary adjustment uplink TA function.

44. The terminal device according to claim 43, characterized in that: The terminal device further includes: The processing unit is used to determine a first usage sequence in the at least one usage sequence according to the corresponding group information or group identifier.

45. The terminal device according to claim 44, characterized in that: The processing unit is further configured to adjust the TA according to the at least one TA adjustment information group, the first usage order and the first TA.

46. ​​The terminal device according to claim 45, characterized in that: The first TA is one of the following: TAC TA indicated in MAC CE, TA indicated in RAR, and TA after the last adjustment.

47. The terminal device according to claim 45 or 46, characterized in that: If the first TA is the TA indicated in the TAC MAC CE or the TA indicated in the RAR, and it is the first TA adjustment, the adjusted TA = the first TA + the TA adjustment step size; or, If the first TA is the TA after the (i-1)th adjustment and it is the i-th TA adjustment, the adjusted TA=the first TA+the step size of the TA adjustment, i is a positive integer, and i>2.

48. The terminal device according to claim 42, characterized in that: The first information includes: At least one TA adjustment information group and a TA adjustment sequence, wherein the TA adjustment sequence indicates a usage order of the at least one TA adjustment information group, and the TA adjustment information group includes a TA adjustment step, a TA adjustment time point, and at least one of the following: The time interval for TA adjustment, the conditions for triggering TA adjustment, and the indication information for starting the auxiliary adjustment uplink TA function.

49. The terminal device according to claim 48, characterized in that: The terminal device further includes: The processing unit is configured to adjust the TA according to the at least one TA adjustment information group, the TA adjustment sequence and the first TA.

50. The terminal device according to claim 49, characterized in that: The first TA is one of the following: TAC TA indicated in MAC CE, TA indicated in RAR, TA after the last adjustment.

51. The terminal device according to claim 49 or 50, characterized in that: If the first TA is the TA indicated in the TAC MAC CE or the TA indicated in the RAR, and it is the first TA adjustment, the adjusted TA = the first TA + the TA adjustment step size; or, If the first TA is the TA after the (i-1)th adjustment and it is the i-th TA adjustment, the adjusted TA=the first TA+the step size of the TA adjustment, i is a positive integer, and i>2.

52. The terminal device according to any one of claims 44 to 47, characterized in that: The group information or group identification corresponding to the terminal device is configured by the network device, or the group information or group identification corresponding to the terminal device is preset.

53. The terminal device according to any one of claims 44 to 47, characterized in that: The group information or group identifier corresponding to the terminal device is determined based on a first corresponding relationship, wherein the first corresponding relationship is used to indicate a corresponding relationship between at least one group identifier and at least one terminal identifier, and the at least one terminal identifier includes an identifier of the terminal device.

54. The terminal device according to claim 53, characterized in that: The first corresponding relationship is configured or pre-configured by the network device, or the first corresponding relationship is preset, or the first corresponding relationship is determined by the terminal device.

55. The terminal device according to claim 54, characterized in that: The first corresponding relationship is determined according to the status information of the network device and / or the terminal device; The status information includes at least one of the following: Positioning information, velocity information, motion trajectory, star track, ephemeris, measurement results, and measurement information.

56. The terminal device according to any one of claims 44 to 47, characterized in that: The group information or group identifier corresponding to the terminal device is determined or predefined by the terminal device and / or the network device.

57. The terminal device according to claim 56, characterized in that: The group information or group identifier corresponding to the terminal device is determined or predefined by the terminal device and / or the network device according to its state information; The status information includes at least one of the following: Positioning information, velocity information, motion trajectory, star track, ephemeris, measurement results, and measurement information.

58. The terminal device according to any one of claims 43 to 57, characterized in that: The condition for triggering TA adjustment includes at least one of the following: The difference between the positions measured twice by the terminal device is greater than the threshold value, the difference between the reference signal received power RSRP measured twice by the terminal device is greater than the threshold value, and the speed of the terminal device is greater than the threshold value.

59. The terminal device according to any one of claims 43 to 58, characterized in that: The terminal device further includes: The processing unit is used to adjust the TA according to the first information and the first TA during the operation of the first timer.

60. The terminal device according to claim 59, characterized in that: The communication unit is further configured to receive second information sent by the network device, wherein the second information indicates a second TA; The processing unit is further configured to adjust uplink synchronization according to the second TA; The first timer is started when the second information is received; or the first timer is started when the uplink synchronization is adjusted according to the second TA.

61. The terminal device according to claim 60, characterized in that: The second information is information carrying TAC MAC CE or downlink shared channel DL-SCH, or the second information is RAR.

62. The terminal device according to any one of claims 59 to 61, characterized in that: The communication unit is further configured to receive third information during the running of the first timer, and the third information indicates a third TA; The processing unit is further configured to adjust uplink synchronization according to the third TA.

63. The terminal device according to claim 62, characterized in that: The third information is information carrying TAC MAC CE or DL-SCH, or the third information is RAR.

64. The terminal device according to any one of claims 59 to 63, characterized in that: The first TA is one of the following: TAC TA indicated in MAC CE, TA indicated in RAR, and TA after the last adjustment.

65. The terminal device according to any one of claims 42 to 64, characterized in that: The communication unit is specifically used for: Receive the first information sent by the network device through broadcast or dedicated radio resource control RRC signaling.

66. The terminal device according to any one of claims 42 to 65, characterized in that: The communication unit is also used to send first indication information to the network device, where the first indication information is used to indicate the ability of the terminal device to support TA adjustment.

67. The terminal device according to any one of claims 42 to 66, characterized in that: The terminal device further includes: A processing unit, configured to ignore or skip the first information if the terminal device does not support TA adjustment capability.

68. A network device, characterized in that: include: A communication unit, used to send first information to a terminal device, the first information being used to adjust a timing advance TA, the first information including a TA adjustment step and a TA adjustment time point; wherein the first information and the first TA are used by the terminal device to adjust the TA; the first information also includes at least one of the following information: a TA adjustment time interval, a condition for triggering TA adjustment, and auxiliary adjustment uplink TA function activation indication information; the first TA is obtained in different ways in different states; if the first TA is the TA indicated in the TAC MAC CE or the TA indicated in the RAR, and it is the first TA adjustment, the adjusted TA = the first TA + the TA adjustment step, or, if the first TA is the TA indicated in the TAC MAC CE or the TA indicated in the RAR, and it is the i-th TA adjustment, the adjusted TA = the first TA + the i-th TA cumulative adjustment value, i is a positive integer, and i>1, or, if the first TA is the TA after the i-1-th adjustment, and it is the i-th TA adjustment, the adjusted TA = the first TA + the TA adjustment step, i is a positive integer, and i>2.

69. The network device according to claim 68, characterized in that The first information also includes: At least one TA adjustment information group, at least one usage order, and at least one group identifier, wherein the at least one usage order respectively indicates the usage order of the at least one TA adjustment information group, and the TA adjustment information group includes a step size of TA adjustment, a time point of TA adjustment, and at least one of the following: The time interval for TA adjustment, the conditions for triggering TA adjustment, and the indication information for starting the auxiliary adjustment uplink TA function.

70. The network device according to claim 68, characterized in that The first information also includes: At least one TA adjustment information group and a TA adjustment sequence, wherein the TA adjustment sequence indicates a usage order of the at least one TA adjustment information group, and the TA adjustment information group includes a TA adjustment step, a TA adjustment time point, and at least one of the following: The time interval for TA adjustment, the conditions for triggering TA adjustment, and the indication information for starting the auxiliary adjustment uplink TA function.

71. The network device according to claim 69, characterized in that The communication unit is also used to send first configuration information to the terminal device, wherein the first configuration information is used to configure the group information or group identifier corresponding to the terminal device, or the first configuration information is used to configure a first corresponding relationship, and the first corresponding relationship is used to indicate the corresponding relationship between the at least one group identifier and the at least one terminal identifier, and the at least one terminal identifier includes the identifier of the terminal device.

72. The network device according to claim 71, characterized in that The first corresponding relationship is configured by the network device according to its state information, wherein the state information includes at least one of the following: Positioning information, velocity information, motion trajectory, star track, ephemeris, measurement results, and measurement information.

73. The network device according to any one of claims 69 to 72, characterized in that: The condition for triggering TA adjustment includes at least one of the following: The difference between the positions measured twice by the terminal device is greater than the threshold value, the difference between the reference signal received power RSRP measured twice by the terminal device is greater than the threshold value, and the speed of the terminal device is greater than the threshold value.

74. The network device according to any one of claims 68 to 73, characterized in that: The communication unit is further used to send second information to the terminal device, where the second information indicates a second TA, and the second TA is used by the terminal device to adjust uplink synchronization.

75. The network device according to claim 74, characterized in that The second information is information of a media access control element MAC CE carrying a timing advance command TAC or a downlink shared channel DL-SCH, or the second information is a random access response RAR.

76. The network device according to claim 74 or 75, characterized in that: The communication unit is further used to send second configuration information to the terminal device, where the second configuration information is used to configure a first timer, wherein during the operation of the first timer, the terminal device adjusts the TA according to the first information and the first TA.

77. The network device according to claim 76, characterized in that The first TA is one of the following: TAC TA indicated in MAC CE, TA indicated in RAR, TA after the last adjustment.

78. The network device according to claim 76 or 77, characterized in that: When the second information is received, the first timer is started; or, At the moment when uplink synchronization is adjusted according to the second TA, the first timer is started.

79. The network device according to any one of claims 76 to 78, characterized in that: The communication unit is further used to send third information to the terminal device during the operation of the first timer, and the third information indicates a third TA, and the third TA is used by the terminal device to adjust uplink synchronization.

80. The network device according to claim 79, characterized in that The third information is information carrying TAC MAC CE or DL-SCH, or the third information is RAR.

81. The network device according to any one of claims 68 to 80, characterized in that: The communication unit is specifically used for: The first information is sent to the terminal device via broadcast or dedicated radio resource control RRC signaling.

82. The network device according to any one of claims 68 to 81, characterized in that: The communication unit is further used to receive first indication information sent by the terminal device, where the first indication information is used to indicate the terminal device's ability to support TA adjustment.

83. A terminal device, characterized in that: include: A processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method according to any one of claims 1 to 26.

84. A network device, characterized in that: include: A processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method as claimed in any one of claims 27 to 41.

85. A device, characterized in that include: A processor, configured to call and run a computer program from a memory, so that a device equipped with the apparatus executes a method as claimed in any one of claims 1 to 26.

86. A device, characterized in that include: A processor, configured to call and run a computer program from a memory, so that a device equipped with the apparatus executes a method as claimed in any one of claims 27 to 41.

87. A computer-readable storage medium, characterized in that Used to store a computer program, the computer program causing a computer to execute the method according to any one of claims 1 to 26.

88. A computer-readable storage medium, characterized in that Used to store a computer program, the computer program causing a computer to execute the method as claimed in any one of claims 27 to 41.

89. A computer program product, characterized in that The method comprises computer program instructions which cause a computer to execute the method as claimed in any one of claims 1 to 26.

90. A computer program product, characterized in that Comprising computer program instructions causing a computer to perform the method as claimed in any one of claims 27 to 41.

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