CN116235539A

CN116235539A - Wireless communication method and device

Info

Publication number: CN116235539A
Application number: CN202080104777.6A
Authority: CN
Inventors: 胡奕; 李海涛
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2023-06-06
Also published as: WO2022056854A1

Abstract

The embodiment of the application provides a wireless communication method and device, wherein the method comprises the following steps: determining a first Timing Advance (TA) for uplink transmission of a terminal device based on ephemeris information and position information of the terminal device; and reporting the first TA to network equipment. By autonomously determining the first TA, the determination or control of the first TA by the network device is avoided, and based on this, signaling overhead caused by a large number of TA commands due to rapid TA changes of the terminal device in the NTN system can be reduced, and at the same time, uplink synchronization performance of the terminal device can be ensured.

Description

Wireless communication method and device

Technical Field

Embodiments of the present application relate to the field of communications, and more particularly, to wireless communication methods and devices.

Background

Currently, the third generation partnership project (The 3rd Generation Partnership Project,3GPP) is researching a non-terrestrial communication network (Non Terrestrial Network, NTN) that can provide communication services to terrestrial users by way of satellite communications. Satellite communications have many unique advantages over terrestrial cellular communications.

In a New Radio (NR) terrestrial network, a Timing Advance (TA) between a terminal device and a network device changes less, and the network device may enable the terminal to maintain a valid TA by issuing an uplink timing advance command to the terminal device during a time alignment timer (time alignment timer) of the terminal device, i.e., the TA maintained by the terminal device is valid during the time alignment timer. After each time the network informs the terminal device to update the TA, the terminal device restarts the TimeAlignmentTimer. After the timeout of the TimeAlignmentTimer, if the terminal device needs to send uplink data, the random access procedure needs to be triggered to reacquire the TA.

Compared with the cellular network adopted by the traditional NR, the TA variation between the terminal equipment and the satellite in the NTN is large, and particularly, the Low Earth Orbit (LEO) satellite scene is large. Since TA changes too fast, the TimeAlignmentTimer needs to be configured very small and requires the network device to adjust the TA more frequently, thus causing serious signaling overhead. If the TimeAlignmentTimer is configured to be larger, the terminal device may trigger the random access procedure frequently to acquire the TA, which may also cause larger signaling overhead and random access resource consumption.

Therefore, how to support the mechanism of timing advance for NTN is a technical problem that needs to be solved in the art.

Disclosure of Invention

The embodiment of the application provides a wireless communication method and equipment, which can support a timing advance mechanism aiming at NTN.

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

determining a first Timing Advance (TA) for uplink transmission of a terminal device based on ephemeris information and position information of the terminal device;

and reporting the first TA to network equipment.

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

and receiving the first TA reported by the terminal equipment.

In a third aspect, a wireless communication method is provided, including:

receiving indication information sent by network equipment, wherein the indication information is used for indicating to activate or deactivate a first mode;

determining a first Timing Advance (TA) for uplink transmission by the terminal equipment through the first mode under the condition that the indication information is used for indicating to activate the first mode; and/or, in case the indication information is used to indicate that the first mode is deactivated, determining the first TA by a second mode.

In a fourth aspect, there is provided a wireless communication method comprising:

and sending indication information to the terminal equipment, wherein the indication information is used for indicating to activate or deactivate the first mode.

In a fifth aspect, a terminal device is provided for performing the method of the first aspect or each implementation manner thereof. Specifically, the terminal device includes a functional module for executing the method in the first aspect or each implementation manner thereof.

In a sixth aspect, a network device is provided for performing the method of the second aspect or implementations thereof. In particular, the network device comprises functional modules for performing the method of the second aspect or implementations thereof described above.

A seventh aspect provides a terminal device for performing the method of the third aspect or implementations thereof. Specifically, the terminal device comprises functional modules for performing the method in the third aspect or implementations thereof.

In an eighth aspect, a network device is provided for performing the method of the fourth aspect or implementations thereof. In particular, the network device comprises functional modules for performing the method of the fourth aspect described above or in various implementations thereof.

In a ninth aspect, a terminal device is provided, comprising a processor and a memory. The memory is configured to store a computer program, and the processor is configured to invoke and execute the computer program stored in the memory, so as to perform the method in the first aspect or each implementation manner thereof.

In a tenth aspect, a network device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory to execute the method in the second aspect or various implementation manners thereof.

In an eleventh aspect, a terminal device is provided that includes a processor and a memory. The memory is configured to store a computer program, and the processor is configured to invoke and execute the computer program stored in the memory, to perform the method according to the third aspect or implementations thereof.

In a twelfth aspect, a network device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory to execute the method in the fourth aspect or various implementation manners thereof.

A thirteenth aspect provides a chip for implementing the method of any one of the first to fourth aspects or each implementation thereof. Specifically, the chip includes: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method as in any one of the first to fourth aspects or implementations thereof described above.

In a fourteenth aspect, there is provided a computer-readable storage medium storing a computer program for causing a computer to perform the method of any one of the above first to fourth aspects or implementations thereof.

In a fifteenth aspect, there is provided a computer program product comprising computer program instructions for causing a computer to perform the method of any one of the first to fourth aspects or implementations thereof.

In a sixteenth aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method of any one of the first to fourth aspects or implementations thereof.

Based on the technical scheme, determining a first timing advance TA for uplink transmission of the terminal equipment based on ephemeris information and position information of the terminal equipment; and reporting the first TA to the network device, which is equivalent to that the terminal device can autonomously determine the first TA, so as to avoid determining or controlling the first TA by the network device, and based on this, signaling overhead caused by a large number of TA commands caused by rapid TA changes of the terminal device in the NTN system can be reduced, and at the same time, uplink synchronization performance of the terminal device can be ensured.

Drawings

Fig. 1 to 3 are examples of application scenarios of the present application.

Fig. 4 is an illustration of transmission timing without timing advance mechanism provided by an embodiment of the present application.

Fig. 5 is a schematic diagram of transmission timing using a timing advance mechanism provided in an embodiment of the present application.

Fig. 6 and 7 are schematic block diagrams of signaling for carrying TA commands provided by embodiments of the present application.

Fig. 8 is a schematic flow chart of a wireless communication method provided in an embodiment of the present application.

Fig. 9 is an example of the wireless communication method shown in fig. 8.

Fig. 10 is a schematic flow chart of a wireless communication method provided in an embodiment of the present application.

Fig. 11 is an example of the wireless communication method shown in fig. 10.

Fig. 12 is a schematic block diagram of a terminal device provided in an embodiment of the present application.

Fig. 13 is a schematic block diagram of a network device provided in an embodiment of the present application.

Fig. 14 is another schematic block diagram of a terminal device provided in an embodiment of the present application.

Fig. 15 is another schematic block diagram of a network device provided in an embodiment of the present application.

Fig. 16 is a schematic block diagram of a communication device provided in an embodiment of the present application.

Fig. 17 is a schematic block diagram of a chip provided in an embodiment of the present application.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

Fig. 1 is a schematic diagram of an application scenario according to an embodiment of the present application.

As shown in fig. 1, communication system 100 may include a terminal device 110 and a network device 120. Network device 120 may communicate with terminal device 110 over the air interface. Multi-service transmission is supported between terminal device 110 and network device 120.

It should be understood that the present embodiments are illustrated by way of example only with respect to communication system 100, but the present embodiments are not limited thereto. That is, the technical solution of the embodiment of the present application may be applied to various communication systems, for example: long term evolution (Long Term Evolution, LTE) system, LTE time division duplex (Time Division Duplex, TDD), universal mobile telecommunications system (Universal Mobile Telecommunication System, UMTS), 5G communication system (also referred to as New Radio (NR) communication system), or future communication system, etc.

In the communication system 100 shown in fig. 1, the network device 120 may be an access network device in communication with the terminal device 110. The access network device may provide communication coverage for a particular geographic area and may communicate with terminal devices 110 (e.g., UEs) located within the coverage area.

The network device 120 may be an evolved base station (Evolutional Node B, eNB or eNodeB) in a long term evolution (Long Term Evolution, LTE) system, or a next generation radio access network (Next Generation Radio Access Network, NG RAN) device, or a base station (gNB) in a NR system, or a radio controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device 120 may be a relay station, an access point, a vehicle device, a wearable device, a hub, a switch, a bridge, a router, or a network device in a future evolved public land mobile network (Public Land Mobile Network, PLMN), etc.

Terminal device 110 may be any terminal device including, but not limited to, a terminal device that employs a wired or wireless connection with network device 120 or other terminal devices.

For example, the terminal device 110 may refer to an access terminal, user Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network or a terminal device in a future evolution network, etc.

The terminal Device 110 may be used for Device-to-Device (D2D) communication.

The wireless communication system 100 may further comprise a core network device 130 in communication with the base station, which core network device 130 may be a 5G core,5gc device, e.g. an access and mobility management function (Access and Mobility Management Function, AMF), further e.g. an authentication server function (Authentication Server Function, AUSF), further e.g. a user plane function (User Plane Function, UPF), further e.g. a session management function (Session Management Function, SMF). Optionally, the core network device 130 may also be a packet core evolution (Evolved Packet Core, EPC) device of the LTE network, for example a session management function+a data gateway (Session Management Function + Core Packet Gateway, smf+pgw-C) device of the core network. It should be appreciated that SMF+PGW-C may perform the functions performed by both SMF and PGW-C. In the network evolution process, the core network device may also call other names, or form a new network entity by dividing the functions of the core network, which is not limited in this embodiment of the present application.

Communication may also be achieved by establishing connections between various functional units in the communication system 100 through a next generation Network (NG) interface.

For example, the terminal device establishes an air interface connection with the access network device through an NR interface, and is used for transmitting user plane data and control plane signaling; the terminal equipment can establish control plane signaling connection with AMF through NG interface 1 (N1 for short); an access network device, such as a next generation radio access base station (gNB), can establish a user plane data connection with a UPF through an NG interface 3 (N3 for short); the access network equipment can establish control plane signaling connection with AMF through NG interface 2 (N2 for short); the UPF can establish control plane signaling connection with the SMF through an NG interface 4 (N4 for short); the UPF can interact user plane data with the data network through an NG interface 6 (N6 for short); the AMF may establish a control plane signaling connection with the SMF through NG interface 11 (N11 for short); the SMF may establish a control plane signaling connection with the PCF via NG interface 7 (N7 for short).

Fig. 1 exemplarily illustrates one base station, one core network device, and two terminal devices, alternatively, the wireless communication system 100 may include a plurality of base station devices and each base station may include other number of terminal devices within a coverage area, which is not limited in the embodiment of the present application.

Fig. 2 is a schematic architecture diagram of another communication system according to an embodiment of the present application.

As shown in FIG. 2, including a terminal device 1101 and a satellite 1102, wireless communication may be provided between terminal device 1101 and satellite 1102. The network formed between terminal device 1101 and satellite 1102 may also be referred to as NTN. In the architecture of the communication system shown in FIG. 2, satellite 1102 may have the functionality of a base station and direct communication may be provided between terminal device 1101 and satellite 1102. Under the system architecture, satellite 1102 may be referred to as a network device. In some embodiments of the present application, a plurality of network devices 1102 may be included in a communication system, and other numbers of terminal devices may be included within the coverage area of each network device 1102, which embodiments of the present application are not limited in this regard.

Fig. 3 is a schematic architecture diagram of another communication system according to an embodiment of the present application.

As shown in fig. 3, the system comprises a terminal device 1201, a satellite 1202 and a base station 1203, wherein wireless communication can be performed between the terminal device 1201 and the satellite 1202, and communication can be performed between the satellite 1202 and the base station 1203. The network formed between the terminal device 1201, the satellite 1202 and the base station 1203 may also be referred to as NTN. In the architecture of the communication system shown in fig. 3, the satellite 1202 may not have the function of a base station, and communication between the terminal device 1201 and the base station 1203 needs to be relayed through the satellite 1202. Under such a system architecture, the base station 1203 may be referred to as a network device. In some embodiments of the present application, a plurality of network devices 1203 may be included in the communication system, and a coverage area of each network device 1203 may include other number of terminal devices, which is not limited in the embodiments of the present application. The network device 1203 may be the network device 120 of fig. 1.

It should be appreciated that the

satellites

1102 or 1202 include, but are not limited to:

low Earth Orbit (Low-Earth Orbit) LEO satellites, medium Earth Orbit (MEO) satellites, geosynchronous Orbit (Geostationary Earth Orbit, GEO) satellites, high elliptical Orbit (High Elliptical Orbit, HEO) satellites, and the like. Satellites may cover the ground with multiple beams, e.g., a satellite may form tens or even hundreds of beams to cover the ground. In other words, one satellite beam may cover a ground area of several tens to hundreds of kilometers in diameter to ensure satellite coverage and to increase the system capacity of the overall satellite communication system.

As an example, the LEO may have a height ranging from 500km to 1500km, a corresponding orbital period of about 1.5 hours to 2 hours, a signal propagation delay for single hop communication between users may generally be less than 20ms, a maximum satellite visibility time may be 20 minutes, and the LEO has a short signal propagation distance and less link loss, and requires no high transmit power for the user terminal. The orbit height of GEO may be 35786km, the period of rotation around the earth may be 24 hours, and the signal propagation delay for single hop communication between users may typically be 250ms.

It should be noted that fig. 1 to 3 illustrate, by way of example, a system to which the present application is applicable, and of course, the method shown in the embodiments of the present application may be applicable to other systems. Furthermore, the terms "system" and "network" are often used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship. It should also be understood that, in the embodiments of the present application, the "indication" may be a direct indication, an indirect indication, or an indication that there is an association relationship. For example, a indicates B, which may mean that a indicates B directly, e.g., B may be obtained by a; it may also indicate that a indicates B indirectly, e.g. a indicates C, B may be obtained by C; it may also be indicated that there is an association between a and B.

To facilitate an understanding of the scheme of the present application, the following describes uplink timing advance in an NR system.

An important feature of uplink transmission is that different UEs are orthogonal multiple access in time-frequency, i.e. uplink transmissions from different UEs in the same cell do not interfere with each other.

In order to guarantee orthogonality of the uplink transmission, avoid intra-cell (intra-cell) interference, the network device requires that signals from different terminal devices of the same time but different frequency domain resources arrive at the network device at substantially aligned times. For example, time synchronization at the network device side can be guaranteed by an uplink timing advance mechanism.

In the mechanism of uplink timing advance, the uplink clock and the downlink clock on the network device side are the same, while the uplink clock and the downlink clock on the terminal device side are offset, and different terminal devices have different respective uplink timing advance amounts. The network device can control the time at which the uplink signals from the different terminal devices arrive at the network device by appropriately controlling the offset of each terminal device. For a terminal device farther from the network device, uplink data is sent in advance than a terminal device closer to the network device due to a larger transmission delay.

As shown in fig. 4, if the uplink timing advance is not performed, the time when signals of different terminal apparatuses arrive at the network apparatus is misaligned. T (T) _p1 And T _p2 Respectively representing the short transmission delays (short propagation delay) of the two terminal devices.

As shown in fig. 5, there is an offset between the up clock and the down clock at the terminal device side. For example T _p1 And T _p2 Respectively representing the short transmission delays of the two terminal devices. Short transmission delay T _p1 Is 2T _p1 Short transmission delay T _p2 Is 2T _p2 I.e. the TA value is a configuration at UE level. Note that TA is twice the amount of transmission time. The TA is also called Round Trip Time (RTT).

The network device may determine a TA value for each terminal device based on measuring the uplink transmissions of the terminal device. The network device may send a Timing Advance (TA) command to the terminal device in two ways. The TA command may be referred to as a timing advance command (Timing Advance Command, TAC).

1) Acquisition of initial TA.

In the random access procedure, the network device determines the TA value by measuring the received preamble (preamble) and sends the TA command field with a length of 12 bits in the payload (Random Access Response payload, RARpayload) to the terminal device through the random access response. For example, the TA command may be carried by a medium access control (Media Access Control, MAC) RAR as shown in fig. 6. In addition, the MAC RAR may also carry an uplink grant and a temporary cell radio network temporary identity (temporary Cell Radio Network Temporary Identifier, TC-RNTI). Wherein R may represent a reserved bit. Oct represents a byte.

In NR, TA is calculated as (N) _TA +N _TA,offset )T _c 。

Wherein N is _TA,offset The broadcast TA is typically 0. Timing Advance Command domain in RAR indicates T _A Index 0,1, 2..3846, resulting in a subcarrier spacing of 2 ^μ N corresponding to 15kHz _TA ＝T _A ·16·64/2 ^μ . T in TA calculation formula _c ＝1/(Δf _max ·N _f ) Wherein Δf _max ＝480*10 ³ Hz，N _f ＝4096。

2) Adjustment of RRC connected state TA.

Although the terminal device and the network device acquire uplink synchronization in the random access process, the timing of the uplink signal reaching the network device may change with time, so the terminal device needs to continuously update its uplink timing advance to maintain uplink synchronization. If the TA of a certain terminal device needs correction, the network device may send a TA command to the terminal device, which requires that it adjust the uplink timing. The TA command is sent to the terminal device through the MAC CE.

Fig. 7 is a schematic diagram of a format of a MAC CE provided in an embodiment of the present application.

As shown in fig. 7, the MAC CE may include a timing advance group identification (Timing Advance Group ID, TAG ID) and a TA command.

Fig. 8 shows a schematic flow chart of a wireless communication method 200 according to an embodiment of the present application, which method 200 may be performed interactively by a terminal device and a network device. The terminal device shown in fig. 8 may be a terminal device as shown in fig. 1, and the network device shown in fig. 8 may be an access network device as shown in fig. 1.

As shown in fig. 8, the method 200 may include:

s210, determining a first timing advance TA for uplink transmission of a terminal device based on ephemeris information and position information of the terminal device;

s220, reporting the first TA to the network equipment.

For example, the terminal device may determine the first TA based on ephemeris information and location information of the terminal device, and report the first TA. Alternatively, the ephemeris information may be used to determine the position of the satellites. Alternatively, the location information of the terminal device may be information acquired by a global navigation satellite system (Global Navigation Satellite System, GNSS). Optionally, the terminal device is GNSS capable.

In other words, the network device may receive the first TA reported by the terminal device. Optionally, the network device may schedule uplink transmission of the terminal device based on the first TA.

Determining a first Timing Advance (TA) for uplink transmission of a terminal device based on ephemeris information and position information of the terminal device; and reporting the first TA to the network device, which is equivalent to that the terminal device can autonomously determine the first TA, so as to avoid determining or controlling the first TA by the network device, and based on this, signaling overhead caused by a large number of TA commands caused by rapid TA changes of the terminal device in the NTN system can be reduced, and at the same time, uplink synchronization performance of the terminal device can be ensured.

In some embodiments of the present application, the first TA is a TA corresponding to the first TA packet.

Based thereon, the method 200 may further comprise:

and starting or restarting the time alignment timer corresponding to the first TA packet.

For example, after reporting the first TA, the terminal device starts or restarts a time alignment timer (timeAlignmentTimer) corresponding to the first packet.

Alternatively, if a first TA packet is associated to a primary cell (Pcell), the first TA packet may also be referred to as a primary timing advance group; the first TA packet may also be referred to as a secondary timing advance group (scag) if it is associated only to a secondary cell.

In some embodiments of the present application, the method 200 may further include:

and ignoring a TA command sent by the network equipment for adjusting the TA corresponding to the first TA packet in a period of time after the first TA is sent.

For example, the terminal device ignores a TA command sent by the network device for adjusting a TA corresponding to the first TA packet for a period of time after sending the first TA. In other words, even if the network device receives the first TA, a command for adjusting the TA corresponding to the first TA packet may be sent to the terminal device.

In some embodiments of the present application, the duration of the period of time is network configured, or the duration of the period of time is determined by the terminal device. For example, the duration of the period of time is equal to the duration of the first TA.

and receiving first configuration information sent by the network equipment, wherein the first configuration information is used for configuring at least one TA packet, each TA packet in the at least one TA packet is configured with a time alignment timer, and the at least one TA packet comprises the first TA packet.

For example, the terminal device determines, through first configuration information sent by the network device, a first TA packet corresponding to the first TA, and further determines a time alignment timer corresponding to the first TA packet, so as to start or restart the time alignment timer corresponding to the first TA packet after the first TA is reported.

In some embodiments of the present application, the at least one TA packet comprises a TA packet associated with each serving cell of the terminal device.

In some embodiments of the present application, the S210 may include:

the first TA is determined based on the ephemeris information and the location information, with the terminal device in a radio resource control (Radio Resource Control, RRC) connected state.

For example, if the terminal device is in an RRC connected state, the terminal device may determine the first TA based on the ephemeris information and the location information.

In some embodiments of the present application, the S320 may include:

periodically reporting the first TA; or (b)

And reporting the first TA based on the triggering condition.

In other words, the terminal device may report the first TA periodically, or may report the first TA based on a trigger condition. Optionally, the triggering condition may be a triggering event or a certain judgment result, which is not specifically limited in this application. For example, the terminal device determines the first TA based on the ephemeris information and the location information, and reports the first TA to the network device when the terminal device determines that the trigger condition is satisfied.

and receiving second configuration information sent by the network equipment, wherein the second configuration information is used for configuring a reporting period of the TA or triggering conditions for triggering the TA to report.

For example, the terminal device receives the second configuration information sent by the network device, and reports the first TA based on the second configuration information.

In other words, the network device sends the second configuration information to the terminal device, so that the terminal device reports the first TA based on the second configuration information.

Fig. 9 is an example of the method 300 shown in fig. 8.

As shown in fig. 9, at time t1, the terminal device receives a TA command sent by the network device, so that the terminal device adjusts TA based on the TA command, and starts a time alignment timer. At time t2, the terminal device may determine and report the TA based on the ephemeris information and the location information, and restart the time alignment timer. At time t3, if the terminal device receives the TA command sent by the network device, the TA command is ignored because the time interval between t3 and t2 is smaller than the TA of the terminal. At time t4, if the terminal device receives the TA command sent by the network device, since the time interval between t4 and t2 is greater than the TA of the terminal, the TA is adjusted based on the TA command, and the time alignment timer is restarted. At time t5, the terminal device reports the TA to the network device, and restarts the time alignment timer.

The time T3 is located within a period of time T after the time T2.

Fig. 10 is a schematic flow chart of a wireless communication method 300 provided in an embodiment of the present application. The method 300 may be performed interactively by a terminal device and a network device. The terminal device shown in fig. 10 may be a terminal device as shown in fig. 1, and the network device shown in fig. 10 may be an access network device as shown in fig. 1.

As shown in fig. 10, the method 300 may include:

s310, receiving indication information sent by network equipment, wherein the indication information is used for indicating to activate or deactivate a first mode;

s320, determining a first timing advance TA for uplink transmission by the terminal equipment through the first mode under the condition that the indication information is used for indicating to activate the first mode; and/or, in case the indication information is used to indicate that the first mode is deactivated, determining the first TA by a second mode.

In short, the terminal device determines the determining manner of the first TA based on the indication information sent by the network device.

The method for determining the first TA by the terminal equipment through the indication information can enable the terminal equipment to flexibly determine the first TA, and compared with the method for determining the first TA only through default, the method can adapt to various application scenes so as to improve system performance. For example, for the case that the TA changes quickly, the network device may activate the first manner through the indication information, and for the case that the TA changes slowly, the network device may deactivate the first manner through the indication information, so as to flexibly instruct the terminal device to determine the TA, thereby improving the system performance.

In some embodiments of the present application, the first mode refers to a mode that the terminal device autonomously determines a TA. In other words, the first manner may refer to a manner in which the TA command sent by the network device is not required to determine the TA. Based on this, in some embodiments of the present application, the S320 may include:

the first TA is determined based on ephemeris information and location information of the terminal device.

In some embodiments of the present application, the indication information is used to indicate that the first mode is activated; the method 300 may further include:

and ignoring a TA command sent by the network equipment and used for adjusting the first TA.

For example, the first TA is a TA corresponding to the first TA group, and if the terminal device receives a TA command sent by the network device and used for adjusting the TA corresponding to the first TA packet, the terminal device ignores the TA command.

In some embodiments of the present application, the second mode refers to a mode that the terminal device determines TA based on a TA command sent by the network device; wherein, the S320 may include:

receiving a TA command sent by network equipment;

the first TA is determined based on the TA command.

For example, if the indication information indicates to deactivate the first manner, the terminal device receives a TA command sent by the network device and used for adjusting a TA corresponding to the first TA packet, and determines the first TA based on the TA.

In other words, the network device sends the TA command to the terminal device, so that the terminal device determines the first TA based on the TA command.

In some embodiments of the present application, the first manner and the second manner are manners for determining TA of the terminal device over different periods of time. For example, at the same time, the terminal device may determine the first TA only by one of the first manner or the second manner.

In some embodiments of the present application, before the receiving the indication information sent by the network device, the method 300 may further include:

and determining the first TA through an initial state of the first mode, wherein the initial state is an activated state or a deactivated state.

In other words, before the indication information is not received, the terminal device may determine the first TA through the initial state of the first manner. Alternatively, the initial state may also be referred to as a default state or a default state. Optionally, the initial state is predefined. Of course, in other embodiments, the first TA may also be determined directly based on the initial manner. For example, the initial mode may be the first mode or the second mode. Similarly, the initial manner may also be a predefined manner.

In some embodiments of the present application, the indication information is dedicated configuration information of the terminal device.

In other words, the instruction information is information at the terminal device level.

In some embodiments of the present application, the indication information is carried by radio resource control, RRC, signaling.

For example, the indication information indicates to activate or deactivate the first manner by a bit in an indication field in the RRC signaling; or the indication information indicates to activate or deactivate the first mode by whether an indication domain exists in the RRC signaling.

For another example, the indication information may be carried by the following method:

method 1: a 1bit field may be used for the activation indication and the deactivation indication of the first mode, the 1bit indication field always being present; for example, 1 represents activating the first mode, 0 represents deactivating the first mode; alternatively, 1 means to deactivate the first mode, and 0 means to activate the first mode.

Method 2: by means of the indication field, whether an activation indication and a deactivation indication indicating a first mode are present, e.g. the indication field presence indicates that the first mode is activated and the indication field absence indicates that the first mode is deactivated; alternatively, the absence of the indication field indicates that the first mode is activated, and the presence of the indication field indicates that the first mode is deactivated.

In some embodiments of the present application, the indication information is carried by a media access control (Media Access Control, MAC) Control Element (CE).

For example, the indication information indicates to activate or deactivate the first manner by a bit in an indication field in the MAC CE; or the indication information indicates to activate or deactivate the first mode through a logic channel identifier LCID corresponding to the MAC CE.

method 1: by defining 2 MAC CEs for the activation indication and the deactivation indication of the first manner, respectively, the 2 MAC CEs correspond to different LCIDs, and the payloads (payload) are all 0.

Method 2: by defining 1 MAC CE, using 1bit field in payload of the MAC CE for activation indication and deactivation indication of the first mode; for example, 1 represents activating the first mode, 0 represents deactivating the first mode; alternatively, 1 means to deactivate the first mode, and 0 means to activate the first mode.

In some embodiments of the present application, the indication information is carried through a physical downlink control channel PDCCH.

For example, the indication information indicates to activate or deactivate the first manner by a bit in an indication field in the PDCCH.

Fig. 11 is an example of the method 300 shown in fig. 10.

As shown in fig. 11, between times t1, the initial state of the first mode is a deactivated state, and the terminal device may determine TA based on the second mode. At time t1, if the terminal device receives the indication information sent by the network device and used for indicating to activate the first mode, the terminal device determines the TA based on the first mode. At time t2, if the terminal device receives the TA command sent by the network device, the TA command is ignored because the time interval between t2 and t1 is smaller than the TA of the terminal. At time t3, if the terminal device receives the indication information for indicating to deactivate the first mode, the terminal device determines TA according to the second mode, for example, determines TA based on the TA command received at time t 4.

The time T2 is located within a period of time T after the time T1.

The preferred embodiments of the present application have been described in detail above with reference to the accompanying drawings, but the present application is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present application within the scope of the technical concept of the present application, and all the simple modifications belong to the protection scope of the present application. For example, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described in detail. As another example, any combination of the various embodiments of the present application may be made without departing from the spirit of the present application, which should also be considered as disclosed herein.

It should be further understood that, in the various method embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic of the processes, and should not constitute any limitation on the implementation process of the embodiments of the present application. Further, in the embodiments of the present application, the terms "downlink" and "uplink" are used to indicate a transmission direction of a signal or data, where "downlink" is used to indicate that the transmission direction of the signal or data is a first direction of a user equipment transmitted from a station to a cell, and "uplink" is used to indicate that the transmission direction of the signal or data is a second direction of a user equipment transmitted from a cell to a station, for example, "downlink signal" indicates that the transmission direction of the signal is the first direction. In addition, in the embodiment of the present application, the term "and/or" is merely an association relationship describing the association object, which means that three relationships may exist. Specifically, a and/or B may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

Method embodiments of the present application are described in detail above in connection with fig. 8-11, and apparatus embodiments of the present application are described in detail below in connection with fig. 12-12.

Fig. 12 is a schematic block diagram of a terminal device 400 of an embodiment of the present application.

As shown in fig. 12, the terminal device 400 may include:

a determining unit 410, configured to determine a first timing advance TA for uplink transmission by a terminal device based on ephemeris information and location information of the terminal device;

and a reporting unit 420, configured to report the first TA to a network device.

In some embodiments of the present application, the first TA is a TA corresponding to the first TA packet;

the reporting unit 420 is further configured to:

In some embodiments of the present application, the reporting unit 420 is further configured to:

In some embodiments of the present application, the duration of the period of time is network configured, or the duration of the period of time is determined by the terminal device.

In some embodiments of the present application, the duration of the period of time is equal to the duration of the first TA.

In some embodiments of the present application, the determining unit 410 is specifically configured to:

and determining the first TA based on the ephemeris information and the position information under the condition that the terminal equipment is in a Radio Resource Control (RRC) connection state.

In some embodiments of the present application, the reporting unit 420 is specifically configured to:

periodically reporting the first TA; or (b)

And reporting the first TA based on the triggering condition.

It should be understood that apparatus embodiments and method embodiments may correspond with each other and that similar descriptions may refer to the method embodiments. Specifically, the terminal device 400 shown in fig. 12 may correspond to a corresponding main body in performing the method 200 in the embodiment of the present application, and the foregoing and other operations and/or functions of each unit in the terminal device 400 are respectively for implementing the corresponding flow in each method in fig. 8, which is not described herein for brevity.

Fig. 13 is a schematic block diagram of a network device 500 of an embodiment of the present application.

As shown in fig. 13, the network device 500 may include:

and the receiving unit 510 is configured to receive the first TA reported by the terminal device.

In some embodiments of the present application, the receiving unit 510 is further configured to:

and sending first configuration information to the terminal equipment, wherein the first configuration information is used for configuring at least one TA packet, each TA packet in the at least one TA packet is configured with a time alignment timer, and the at least one TA packet comprises the first TA packet.

and sending second configuration information to the terminal equipment, wherein the second configuration information is used for configuring a reporting period of the TA or triggering conditions for triggering the TA to report.

It should be understood that apparatus embodiments and method embodiments may correspond with each other and that similar descriptions may refer to the method embodiments. Specifically, the network device 500 shown in fig. 13 may correspond to a corresponding main body in performing the method 200 in the embodiment of the present application, and the foregoing and other operations and/or functions of each unit in the network device 500 are respectively for implementing the corresponding flow in each method in fig. 8, which are not described herein for brevity.

Fig. 14 is a schematic block diagram of a terminal device 600 of an embodiment of the present application.

As shown in fig. 14, the terminal device 600 may include:

a receiving unit 610, configured to receive indication information sent by a network device, where the indication information is used to indicate to activate or deactivate a first mode;

a determining unit 620, configured to determine, in the case where the indication information is used to indicate activation of the first manner, a first timing advance TA used by the terminal device for uplink transmission through the first manner; and/or, in case the indication information is used to indicate to deactivate the first mode, determining the first TA by a second mode.

In some embodiments of the present application, the first mode refers to a mode that the terminal device autonomously determines a TA.

In some embodiments of the present application, the determining unit 620 is specifically configured to:

In some embodiments of the present application, the indication information is used to indicate that the first mode is activated; the receiving unit 610 is further configured to:

In some embodiments of the present application, the second mode refers to a mode that the terminal device determines TA based on a TA command sent by the network device; the determining unit 620 is specifically configured to:

receiving a TA command sent by network equipment;

the first TA is determined based on the TA command.

In some embodiments of the present application, the first manner and the second manner are manners for determining TA of the terminal device over different periods of time.

In some embodiments of the present application, before the receiving the indication information sent by the network device, the determining unit 620 is further configured to:

In some embodiments of the present application, the initial state is predefined.

In some embodiments of the present application, the indication information indicates to activate or deactivate the first manner by a bit in an indication field in the RRC signaling; or the indication information indicates to activate or deactivate the first mode by whether an indication domain exists in the RRC signaling.

In some embodiments of the present application, the indication information is carried by a medium access control element MAC CE.

In some embodiments of the present application, the indication information indicates to activate or deactivate the first manner by a bit in an indication field in the MAC CE; or the indication information indicates to activate or deactivate the first mode through a logic channel identifier LCID corresponding to the MAC CE.

In some embodiments of the present application, the indication information indicates to activate or deactivate the first manner by a bit in an indication field in the PDCCH.

It should be understood that apparatus embodiments and method embodiments may correspond with each other and that similar descriptions may refer to the method embodiments. Specifically, the terminal device 600 shown in fig. 14 may correspond to a corresponding main body in performing the method 300 of the embodiment of the present application, and the foregoing and other operations and/or functions of each unit in the terminal device 600 are respectively for implementing the corresponding flow in each method in fig. 10, which is not described herein for brevity.

Fig. 15 is a schematic block diagram of a network device 700 of an embodiment of the present application.

As shown in fig. 15, the network device 700 may include:

and a sending unit 710, configured to send indication information to the terminal device, where the indication information is used to indicate to activate or deactivate the first mode.

In some embodiments of the present application, the second mode refers to a mode that the terminal device determines TA based on a TA command sent by the network device.

In some embodiments of the present application, the sending unit 710 is further configured to:

and receiving a TA command sent by the terminal equipment, wherein the TA command is used for determining the first TA.

In some embodiments of the present application, before the receiving the indication information sent by the network device, the sending unit 710 is further configured to:

It should be understood that apparatus embodiments and method embodiments may correspond with each other and that similar descriptions may refer to the method embodiments. Specifically, the network device 700 shown in fig. 15 may correspond to a corresponding main body in performing the method 300 of the embodiment of the present application, and the foregoing and other operations and/or functions of each unit in the network device 700 are respectively for implementing the corresponding flow in each method in fig. 8, which are not described herein for brevity.

The communication device of the embodiments of the present application is described above from the perspective of the functional module in conjunction with the accompanying drawings. It should be understood that the functional module may be implemented in hardware, or may be implemented by instructions in software, or may be implemented by a combination of hardware and software modules.

Specifically, each step of the method embodiments in the embodiments of the present application may be implemented by an integrated logic circuit of hardware in a processor and/or an instruction in software form, and the steps of the method disclosed in connection with the embodiments of the present application may be directly implemented as a hardware decoding processor or implemented by a combination of hardware and software modules in the decoding processor.

Alternatively, the software modules may be located in a well-established storage medium in the art such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, and the like. The storage medium is located in a memory, and the processor reads information in the memory, and in combination with hardware, performs the steps in the above method embodiments.

Fig. 16 is a schematic structural diagram of a communication device 800 of an embodiment of the present application.

As shown in fig. 16, the communication device 800 may include a processor 810.

The processor 810 may call and execute a computer program from a memory to implement the methods of the embodiments of the present application.

With continued reference to fig. 16, the communication device 800 may also include a memory 820.

The memory 820 may be used for storing instruction information, and may also be used for storing code, instructions, etc. for execution by the processor 810. Wherein the processor 810 may call and run a computer program from the memory 820 to implement the methods in embodiments of the present application. The memory 820 may be a separate device from the processor 810 or may be integrated into the processor 810.

With continued reference to fig. 16, the communication device 800 may also include a transceiver 830.

The processor 810 may control the transceiver 830 to communicate with other devices, and in particular, may send information or data to other devices or receive information or data sent by other devices. Transceiver 830 may include a transmitter and a receiver. Transceiver 830 may further include antennas, the number of which may be one or more.

It should be appreciated that the various components in the communication device 800 are connected by a bus system that includes a power bus, a control bus, and a status signal bus in addition to a data bus.

It should also be understood that the communication device 800 may be a terminal device of the embodiment of the present application, and the communication device 800 may implement respective flows implemented by the terminal device in the respective methods of the embodiment of the present application, that is, the communication device 800 of the embodiment of the present application may correspond to the terminal device 400 or the terminal device 600 of the embodiment of the present application, and may correspond to respective main bodies in performing the

method

200 or 300 according to the embodiment of the present application, which are not described herein for brevity. Similarly, the communication device 800 may be a network device according to an embodiment of the present application, and the communication device 800 may implement a corresponding flow implemented by the network device in the respective methods according to the embodiments of the present application. That is, the communication device 800 of the embodiment of the present application may correspond to the network device 500 or the network 700 of the embodiment of the present application, and may correspond to the respective subject performing the

method

200 or 300 according to the embodiment of the present application, and for brevity, will not be described herein.

In addition, the embodiment of the application also provides a chip.

For example, the chip may be an integrated circuit chip having signal processing capabilities, and may implement or perform the methods, steps, and logic blocks disclosed in the embodiments of the present application. The chip may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip, etc. Alternatively, the chip may be applied to various communication devices, so that the communication device mounted with the chip can perform the methods, steps and logic blocks disclosed in the embodiments of the present application.

Fig. 17 is a schematic structural diagram of a chip 900 according to an embodiment of the present application.

As shown in fig. 17, the chip 900 includes a processor 910.

Wherein the processor 910 may call and run a computer program from a memory to implement the methods in embodiments of the present application.

With continued reference to fig. 17, the chip 900 may also include a memory 920.

Wherein the processor 910 may invoke and run a computer program from the memory 920 to implement the methods in the embodiments of the present application. The memory 920 may be used for storing instruction information and may also be used for storing code, instructions, etc. for execution by the processor 910. The memory 920 may be a separate device from the processor 910 or may be integrated in the processor 910.

With continued reference to fig. 17, the chip 900 may also include an input interface 930.

The processor 910 may control the input interface 930 to communicate with other devices or chips, and in particular, may acquire information or data sent by the other devices or chips.

With continued reference to fig. 17, the chip 900 may further include an output interface 940.

Wherein the processor 910 may control the output interface 940 to communicate with other devices or chips, and in particular, may output information or data to the other devices or chips.

It should be understood that the chip 900 may be applied to a network device in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, or may implement a corresponding flow implemented by a terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

It should also be appreciated that the various components in the chip 900 are connected by a bus system that includes a power bus, a control bus, and a status signal bus in addition to a data bus.

The processors referred to above may include, but are not limited to:

a general purpose processor, digital signal processor (Digital Signal Processor, DSP), application specific integrated circuit (Application Specific Integrated Circuit, ASIC), field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like.

The processor may be configured to implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present application. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in hardware, in a decoded processor, or in a combination of hardware and software modules in a decoded processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory or erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

The above references to memory include, but are not limited to:

volatile memory and/or nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), and Direct memory bus RAM (DR RAM).

It should be noted that the memory described herein is intended to comprise these and any other suitable types of memory.

There is also provided in an embodiment of the present application a computer-readable storage medium for storing a computer program. The computer readable storage medium stores one or more programs, the one or more programs comprising instructions, which when executed by a portable electronic device comprising a plurality of application programs, enable the portable electronic device to perform the method of the embodiments shown in

method

200 or 300.

Optionally, the computer readable storage medium may be applied to a network device in the embodiments of the present application, and the computer program causes a computer to execute a corresponding flow implemented by the network device in each method in the embodiments of the present application, which is not described herein for brevity.

Optionally, the computer readable storage medium may be applied to a mobile terminal/terminal device in the embodiments of the present application, and the computer program causes a computer to execute a corresponding procedure implemented by the mobile terminal/terminal device in each method of the embodiments of the present application, which is not described herein for brevity.

A computer program product, including a computer program, is also provided in an embodiment of the present application.

Optionally, the computer program product may be applied to a network device in the embodiments of the present application, and the computer program causes a computer to execute a corresponding flow implemented by the network device in each method in the embodiments of the present application, which is not described herein for brevity.

Optionally, the computer program product may be applied to a mobile terminal/terminal device in the embodiments of the present application, and the computer program causes a computer to execute corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiments of the present application, which are not described herein for brevity.

A computer program is also provided in an embodiment of the present application. The computer program, when executed by a computer, enables the computer to perform the methods of the embodiments shown in

method

200 or 300.

Optionally, the computer program may be applied to a network device in the embodiments of the present application, and when the computer program runs on a computer, the computer is caused to execute a corresponding flow implemented by the network device in each method in the embodiments of the present application, which is not described herein for brevity.

In addition, the embodiment of the present application further provides a communication system, which may include the above-mentioned terminal device and network device, so as to form the communication system 100 shown in fig. 1, which is not described herein for brevity. It should be noted that the term "system" and the like herein may also be referred to as "network management architecture" or "network system" and the like.

It is also to be understood that the terminology used in the embodiments of the present application and the appended claims is for the purpose of describing particular embodiments only, and is not intended to be limiting of the embodiments of the present application.

For example, as used in the examples and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

Those of skill in the art will appreciate that the elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the embodiments of the present application.

If implemented as a software functional unit and sold or used as a stand-alone product, may be stored on a computer readable storage medium. Based on such understanding, the technical solution of the embodiments of the present application may be essentially or, what contributes to the prior art, or part of the technical solution may be embodied in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method of the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk or an optical disk.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods may be implemented in other ways.

For example, the division of units or modules or components in the above-described apparatus embodiments is merely a logic function division, and there may be another division manner in actual implementation, for example, multiple units or modules or components may be combined or may be integrated into another system, or some units or modules or components may be omitted or not performed.

As another example, the units/modules/components described above as separate/display components may or may not be physically separate, i.e., may be located in one place, or may be distributed over multiple network elements. Some or all of the units/modules/components may be selected according to actual needs to achieve the purposes of the embodiments of the present application.

Finally, it is pointed out that the coupling or direct coupling or communication connection between the various elements shown or discussed above can be an indirect coupling or communication connection via interfaces, devices or elements, which can be in electrical, mechanical or other forms.

The foregoing is merely a specific implementation of the embodiments of the present application, but the protection scope of the embodiments of the present application is not limited thereto, and any person skilled in the art may easily think about changes or substitutions within the technical scope of the embodiments of the present application, and all changes and substitutions are included in the protection scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application shall be subject to the protection scope of the claims.

Claims

A method of wireless communication, comprising:

determining a first Timing Advance (TA) for uplink transmission of a terminal device based on ephemeris information and position information of the terminal device;

and reporting the first TA to network equipment.
The method of claim 1, wherein the first TA is a TA corresponding to a first TA packet;

the method further comprises the steps of:

and starting or restarting the time alignment timer corresponding to the first TA packet.
The method according to claim 1 or 2, characterized in that the method further comprises:

and ignoring a TA command sent by the network equipment for adjusting the TA corresponding to the first TA packet in a period of time after the first TA is sent.
A method according to claim 3, characterized in that the duration of the period of time is network configured or determined by the terminal device.
The method of claim 3 or 4, wherein the period of time is equal to the duration of the first TA.
The method according to any one of claims 2 to 5, further comprising:

and receiving first configuration information sent by the network equipment, wherein the first configuration information is used for configuring at least one TA packet, each TA packet in the at least one TA packet is configured with a time alignment timer, and the at least one TA packet comprises the first TA packet.
The method of claim 6, wherein the at least one TA packet comprises a TA packet associated with each serving cell of the terminal device.
The method according to any of claims 1 to 7, wherein the determining a first timing advance, TA, for uplink transmission by the terminal device based on ephemeris information and location information of the terminal device comprises:

and determining the first TA based on the ephemeris information and the position information under the condition that the terminal equipment is in a Radio Resource Control (RRC) connection state.
The method according to any one of claims 1 to 8, wherein the reporting the first TA to a network device comprises:

periodically reporting the first TA; or (b)

And reporting the first TA based on the triggering condition.
The method according to claim 9, wherein the method further comprises:

and receiving second configuration information sent by the network equipment, wherein the second configuration information is used for configuring a reporting period of the TA or triggering conditions for triggering the TA to report.
A method of wireless communication, comprising:

and receiving the first TA reported by the terminal equipment.
The method of claim 11, wherein the first TA is a TA corresponding to a first TA packet.
The method according to claim 12, wherein the method further comprises:

and sending first configuration information to the terminal equipment, wherein the first configuration information is used for configuring at least one TA packet, each TA packet in the at least one TA packet is configured with a time alignment timer, and the at least one TA packet comprises the first TA packet.
The method of claim 13, wherein the at least one TA packet comprises a TA packet associated with each serving cell of the terminal device.
The method according to any one of claims 11 to 14, further comprising:

and sending second configuration information to the terminal equipment, wherein the second configuration information is used for configuring a reporting period of the TA or triggering conditions for triggering the TA to report.
A method of wireless communication, comprising:

receiving indication information sent by network equipment, wherein the indication information is used for indicating to activate or deactivate a first mode;

determining a first Timing Advance (TA) for uplink transmission by the terminal equipment through the first mode under the condition that the indication information is used for indicating to activate the first mode; and/or, in case the indication information is used to indicate that the first mode is deactivated, determining the first TA by a second mode.
The method of claim 16, wherein the first mode refers to a mode in which the terminal device autonomously determines a TA.
The method according to claim 17, wherein the determining, by the first manner, a first timing advance TA for uplink transmission by the terminal device includes:

the first TA is determined based on ephemeris information and location information of the terminal device.
The method of claim 17, wherein the indication information is used to indicate activation of the first mode; the method further comprises the steps of:

and ignoring a TA command sent by the network equipment and used for adjusting the first TA.
The method according to claim 16, wherein the second mode refers to a mode that the terminal device determines TA based on a TA command sent by the network device; wherein said determining said first TA by a second means comprises:

receiving a TA command sent by network equipment;

the first TA is determined based on the TA command.
The method according to any of claims 16 to 20, wherein the first and second means are means for determining TA for the terminal device over different time periods.
The method according to any one of claims 16 to 21, wherein prior to receiving the indication information sent by the network device, the method further comprises:

and determining the first TA through an initial state of the first mode, wherein the initial state is an activated state or a deactivated state.
The method of claim 22, wherein the initial state is predefined.
The method according to any of the claims 16 to 23, characterized in that the indication information is proprietary configuration information of the terminal device.
The method according to any of claims 16 to 24, wherein the indication information is carried by radio resource control, RRC, signaling.
The method of claim 25, wherein the indication information indicates activation or deactivation of the first manner by a bit in an indication field in the RRC signaling; or the indication information indicates to activate or deactivate the first mode by whether an indication domain exists in the RRC signaling.
The method according to any of claims 16 to 24, wherein the indication information is carried by a medium access control element, MAC CE.
The method of claim 27, wherein the indication information indicates activation or deactivation of the first manner by a bit in an indication field in the MAC CE; or the indication information indicates to activate or deactivate the first mode through a logic channel identifier LCID corresponding to the MAC CE.
The method according to any of claims 16 to 24, characterized in that the indication information is carried over a physical downlink control channel, PDCCH.
The method of claim 29, wherein the indication information indicates activation or deactivation of the first manner by a bit in an indication field in the PDCCH.
A method of wireless communication, comprising:

and sending indication information to the terminal equipment, wherein the indication information is used for indicating to activate or deactivate the first mode.
The method of claim 31, wherein the first mode refers to a mode in which the terminal device autonomously determines a TA.
The method of claim 31, wherein the second manner refers to a manner in which the terminal device determines TA based on a TA command sent by a network device.
The method according to any one of claims 31 to 33, further comprising:

and receiving a TA command sent by the terminal equipment, wherein the TA command is used for determining the first TA.
The method according to any of claims 31 to 34, wherein the first and second means are means for determining TA for the terminal device over different time periods.
The method according to any one of claims 31 to 35, wherein prior to receiving the indication information sent by the network device, the method further comprises:

And determining the first TA through an initial state of the first mode, wherein the initial state is an activated state or a deactivated state.
The method of claim 36, wherein the initial state is predefined.
The method according to any of the claims 31 to 37, characterized in that the indication information is proprietary configuration information of the terminal device.
The method according to any of claims 31 to 38, wherein the indication information is carried by radio resource control, RRC, signaling.
The method of claim 39, wherein the indication information indicates activation or deactivation of the first manner by a bit in an indication field in the RRC signaling; or the indication information indicates to activate or deactivate the first mode by whether an indication domain exists in the RRC signaling.
The method according to any of claims 31 to 38, wherein the indication information is carried by a medium access control element, MAC CE.
The method of claim 41, wherein the indication information indicates activation or deactivation of the first manner by a bit in an indication field in the MAC CE; or the indication information indicates to activate or deactivate the first mode through a logic channel identifier LCID corresponding to the MAC CE.
The method according to any of claims 31 to 38, characterized in that the indication information is carried over a physical downlink control channel, PDCCH.
The method of claim 43, wherein the indication information indicates activation or deactivation of the first manner by a bit in an indication field in the PDCCH.
A terminal device, comprising:

a determining unit, configured to determine a first timing advance TA used for uplink transmission by a terminal device based on ephemeris information and location information of the terminal device;

and the reporting unit is used for reporting the first TA to the network equipment.
A network device, comprising:

and the receiving unit is used for receiving the first TA reported by the terminal equipment.
A terminal device, comprising:

the receiving unit is used for receiving indication information sent by the network equipment, wherein the indication information is used for indicating to activate or deactivate the first mode;

a determining unit, configured to determine, in the case where the indication information is used to indicate activation of the first manner, a first timing advance TA used by the terminal device for uplink transmission in the first manner; and/or, in case the indication information is used to indicate to deactivate the first mode, determining the first TA by a second mode.
A network device, comprising:

and the sending unit is used for sending indication information to the terminal equipment, wherein the indication information is used for indicating to activate or deactivate the first mode.