CN117751637A

CN117751637A - Wireless communication method, terminal device and network device

Info

Publication number: CN117751637A
Application number: CN202180100974.5A
Authority: CN
Inventors: 吴作敏
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-11-04
Filing date: 2021-11-04
Publication date: 2024-03-22
Also published as: WO2023077384A1

Abstract

The embodiment of the application provides a wireless communication method, terminal equipment and network equipment, wherein the method relates to the field of communication and comprises the following steps: the target timing advance TA value is obtained or reported based on the trigger event. The method provided by the invention can enable the special time sequence offset value of the terminal equipment to be matched with the TA value as much as possible, thereby avoiding the situation that the uplink scheduling delay is overlarge or the processing time of uplink transmission is not met as much as possible, and improving the system performance.

Description

Wireless communication method, terminal device and network device

Technical Field

The embodiments of the present application relate to the field of communications, and more particularly, to a wireless communication method, a terminal device, and a network device.

Background

In a New Radio (NR) system, a Non-terrestrial communication network (Non-Terrestrial Networks, NTN) is considered to provide communication services to users. That is, communication services may be provided to terrestrial subscribers through satellites in the NTN. Satellite communications have many unique advantages over terrestrial cellular communications. Compared with the cellular network adopted by the traditional NR, in the NTN system, due to larger transmission delay between the terminal equipment and the network equipment, a time sequence offset value Koffset is introduced in uplink transmission scheduling for enhancing the uplink scheduling time sequence in the NTN system.

In general, a network device configures a cell common timing offset value for a cell, where the cell common timing offset value is mainly used to offset the influence caused by the timing advance TA of the UE.

However, if the cell common timing offset value is far greater than the TA value of the terminal device, uplink scheduling delay of the terminal device may be caused, and thus the delay index of uplink transmission may be affected; if the cell common timing offset value is smaller than the TA value of the terminal device, insufficient processing time of the terminal device before uplink transmission may occur. Therefore, in order to match the timing offset value of the terminal device to the TA value as much as possible, the network device may also configure the dedicated timing offset value of the terminal device for the terminal device.

However, there is no related technical solution in the art how to match the dedicated timing offset value of the terminal device with the TA value as much as possible.

Disclosure of Invention

The embodiment of the application provides a wireless communication method, terminal equipment and network equipment, which can enable a special time sequence offset value of the terminal equipment to be matched with a TA value as much as possible, further can avoid the situation that the uplink scheduling delay is overlarge or the processing time of uplink transmission is not met as much as possible, and improves the system performance.

In a first aspect, the present application provides a wireless communication method, including:

the target timing advance TA value is obtained or reported based on the trigger event.

In a second aspect, the present application provides a wireless communication method, including:

receiving a target Timing Advance (TA) value sent by terminal equipment;

and determining a special time sequence offset value of the terminal equipment based on the target TA value.

In a third aspect, the present application provides a terminal device 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 one implementation, the terminal device may include a processing unit for performing functions related to information processing. For example, the processing unit may be a processor.

In one implementation, the terminal device may include a transmitting unit and/or a receiving unit. The transmitting unit is configured to perform a function related to transmission, and the receiving unit is configured to perform a function related to reception. For example, the transmitting unit may be a transmitter or a transmitter and the receiving unit may be a receiver or a receiver. For another example, the terminal device is a communication chip, the sending unit may be an input circuit or an interface of the communication chip, and the sending unit may be an output circuit or an interface of the communication chip.

In a fourth aspect, the present application provides a network device for performing the method of the second aspect or each implementation manner thereof. In particular, the network device comprises functional modules for performing the method of the second aspect or implementations thereof described above.

In one implementation, the network device may include a processing unit to perform functions related to information processing. For example, the processing unit may be a processor.

In one implementation, the network device may include a transmitting unit and/or a receiving unit. The transmitting unit is configured to perform a function related to transmission, and the receiving unit is configured to perform a function related to reception. For example, the transmitting unit may be a transmitter or a transmitter and the receiving unit may be a receiver or a receiver. For another example, the network device is a communication chip, the receiving unit may be an input circuit or an interface of the communication chip, and the transmitting unit may be an output circuit or an interface of the communication chip.

In a fifth aspect, the present application provides a terminal device 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 one implementation, the processor is one or more and the memory is one or more.

In one implementation, the memory may be integrated with the processor or separate from the processor.

In one implementation, the terminal device further includes a transmitter (transmitter) and a receiver (receiver).

In a sixth aspect, the present application provides a network device comprising 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 one implementation, the network device further includes a transmitter (transmitter) and a receiver (receiver).

In a seventh aspect, the present application provides a chip for implementing the method in any one of the first aspect to the second aspect 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 second aspects or implementations thereof described above.

In an eighth aspect, the present application provides 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 second aspects or implementations thereof.

In a ninth aspect, the present application provides a computer program product comprising computer program instructions for causing a computer to perform the method of any one of the first to second aspects or implementations thereof.

In a tenth aspect, the present application provides a computer program which, when run on a computer, causes the computer to perform the method of any one of the above-described first to second aspects or implementations thereof.

Based on the technical scheme, the target TA value is acquired or reported based on the triggering event, which is equivalent to limiting the event for triggering the terminal device to acquire or report the target TA value, so that the terminal device acquires or reports the target TA value under the condition of ensuring that some indexes are met, the network device is beneficial to timely and accurately acquiring the target TA value, and based on the fact, when the network device configures the special timing offset value of the terminal device for the terminal device based on the target TA value reported by the terminal device, the special timing offset value of the terminal device can be matched with the TA value of the terminal device as much as possible, and further, the situation that the uplink scheduling delay is overlarge or the processing time of uplink transmission is not met can be avoided as much as possible, and the system performance is improved.

Drawings

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

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

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

Fig. 4 and 5 show schematic diagrams of NTN scenarios based on a through-transmission-repeater satellite and a regenerative repeater satellite, respectively.

Fig. 6 is a schematic flow chart of a wireless communication method provided in an embodiment of the present application.

Fig. 7 is a schematic diagram of a target time provided in an embodiment of the present application.

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

Fig. 9 is a schematic block diagram of a terminal device provided in an embodiment of the present application.

Fig. 10 is a schematic block diagram of a network device provided in an embodiment of the present application.

Fig. 11 is a schematic block diagram of a communication device provided in an embodiment of the present application.

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

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

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.

It should be appreciated that embodiments of the present application are applicable to Non-terrestrial communication network (Non-Terrestrial Networks, NTN) systems as well as terrestrial communication network (Terrestrial Networks, TN) systems.

As an example, NTN systems include at least New wireless non-terrestrial communication network (NR-NTN) systems and internet of things non-terrestrial communication network (Internet of Things NTN, ioT-NTN) systems. Among other things, ioT-NTN systems may include narrowband internet of things non-terrestrial communication network (Narrow Band Internet of Things over NTN, NB-IoT-NTN) systems and enhanced machine type communication non-terrestrial communication network (enhanced Machine Type Communication over NTN, eMTC-NTN) systems.

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.

In a New Radio (NR) system, a Non-terrestrial communication network (Non-Terrestrial Networks, NTN) is considered to provide communication services to users. NTN typically provides communication services to terrestrial users by way of satellite communications. Satellite communications have many unique advantages over terrestrial cellular communications. First, satellite communications are not limited by the user region, for example, general land communications cannot cover areas where communication devices cannot be installed, such as oceans, mountains, deserts, etc., or communication coverage is not performed due to rarity of population, while for satellite communications, since one satellite can cover a larger ground, and the satellite can orbit around the earth, theoretically every corner on the earth can be covered by satellite communications. And secondly, satellite communication has great social value. Satellite communication can be covered in remote mountain areas, poor and backward countries or regions with lower cost, so that people in the regions enjoy advanced voice communication and mobile internet technology, and the digital gap between developed regions is reduced, and the development of the regions is promoted. Again, the satellite communication distance is far, and the cost of communication is not obviously increased when the communication distance is increased; and finally, the satellite communication has high stability and is not limited by natural disasters.

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 the terminal device 1201 and the satellite 1202 can perform wireless communication, and the satellite 1202 and the base station 1203 can communicate. 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 (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, a signal propagation distance of the LEO is short and a link loss is small, and a transmission power requirement of a user terminal is not high. 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.

In general, in order to ensure coverage of a satellite and improve system capacity of an entire satellite communication system, the satellite adopts multiple beams to cover the ground, and one satellite can form tens or hundreds of beams to cover the ground; a satellite beam may cover a ground area of several tens to hundreds of kilometers in diameter.

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.

Satellites can be categorized into transmission-through forwarding (transparent payload) and regenerative forwarding (regenerative payload) from the functions they provide. For the transparent transmission forwarding satellite, only the functions of wireless frequency filtering, frequency conversion and amplification are provided, only the transparent forwarding of signals is provided, and the waveform signals forwarded by the transparent transmission forwarding satellite are not changed. For regenerative repeater satellites, in addition to providing functions of radio frequency filtering, frequency conversion and amplification, demodulation/decoding, routing/conversion, encoding/modulation functions may be provided, which have some or all of the functions of the base station.

In NTN, one or more gateways (Gateway) may be included for communication between satellites and terminals.

As shown in fig. 4, for the NTN scenario based on the transparent forwarding satellite, the gateway and the satellite communicate through a Feeder link (Feeder link), and the satellite and the terminal communicate through a service link (service link). As shown in fig. 5, for the NTN scenario based on regenerative forwarding satellites, communication is performed between satellites through inter-satellite (inter link), communication is performed between a gateway and satellites through Feeder links (Feeder links), and communication is performed between satellites and terminals through service links (service links).

With the pursuit of speed, delay, high-speed mobility, energy efficiency and the diversity and complexity of future life services, the 3GPP international standards organization starts to develop 5G. The main application scenarios of 5G include: enhanced mobile Ultra-wideband (Enhance Mobile Broadband, emmbb), low latency high reliability communications (Ultra-Reliable and Low Latency Communication, URLLC), large scale machine type communications (massive machine type of communication, mctc). Among them, the ebb aims at users getting multimedia contents, services and data, and its demand is growing very rapidly. Since the eMBB may be deployed in a different scenario. For example, indoors, urban areas, rural areas, etc., the capability and demand of which are also quite different, so that detailed analysis can be combined with specific deployment scenarios cannot be generalized. Typical applications of URLLC include: industrial automation, electric power automation, remote medical operation (surgery), traffic safety guarantee and the like. Typical characteristics of mctc include: high connection density, small data volume, delay insensitive traffic, low cost and long service life of the module, etc.

To facilitate an understanding of the schemes provided herein, related content in NR-NTN and IoT-NTN systems is described below.

It should be appreciated that in an NR-NTN system, the units of time units may be time slots; in an IoT-NTN system, the units of time units may be slots or subframes. It should also be appreciated that in an NR-NTN system, the network device may be a gNB; in an IoT-NTN system, the network device may be an eNB.

1. Timing adjustment schemes in NR-NTN and IoT-NTN systems.

In NTN systems, a network device needs to send synchronization assistance information to a terminal device, where the synchronization assistance information is used by the terminal device to complete time-domain and/or frequency-domain synchronization. The information acquired by the terminal equipment according to the synchronization auxiliary information comprises at least one of the following: ephemeris information, common timing value, offset value of common timing value, common transmission delay, reference time t0 (epoch time), reference point position.

And the terminal equipment completes corresponding time domain and/or frequency domain synchronization according to the information acquired by the synchronization auxiliary information and the GNSS capability of the terminal equipment. The terminal device may obtain at least one of the following information based on its GNSS capabilities: location of the terminal device, time reference and frequency reference. The terminal device may calculate timing and/or frequency offset using information obtained from the synchronization assistance information and information obtained based on its GNSS capabilities and apply timing advance compensation and/or frequency offset adjustment in an idle state or inactive state or in a connected state.

In some cases, the terminal device may calculate the TA value according to the following formula, and perform uplink channel or uplink signal transmission according to the determined TA:

T _TA ＝(N _TA +N _{TA,UE-specific} +N _TA,offset +N _TA,common )*Tc；

wherein N is _{TA,UE-specific} The terminal device may estimate itself, for example, a TA value estimated based on ephemeris information (also referred to as a TA value of the service link); n (N) _TA,offset May be defined in a protocol, for example, may be determined according to a network band and LTE or NR coexistence situation; n (N) _TA,common Including a public timing value broadcast by the network device; n (N) _TA May be a TA value indicated by the network device, where N if the uplink channel includes PRACH or MsgA transmissions _TA The value is 0.Tc represents a sampling time interval unit, tc=1/(480×1000×4096).

2. Configurable timers in NR-NTN and IoT-NTN systems.

In the NTN system, the information acquired by the terminal device according to the synchronization auxiliary information includes at least one of the following: ephemeris information, common timing value, offset value of common timing value, common transmission delay, reference time t0 (epoch time), reference point position. And the terminal equipment completes corresponding time domain and/or frequency domain synchronization according to the information acquired by the synchronization auxiliary information and the GNSS capability of the terminal equipment.

Since the synchronization assistance information may vary with time, at least one timer is required to be configured for the terminal device in the NR-NTN and IoT-NTN systems, and the at least one timer may be used for the terminal device to determine whether the acquired synchronization assistance information is valid.

For example, the ephemeris information corresponds to a first timer. After the terminal device starts or restarts the first timer, the terminal device may determine that the ephemeris information obtained by the terminal device is valid before the first timer expires.

For another example, the common timing value and/or an offset value of the common timing value corresponds to the second timer. After the terminal device starts or restarts the second timer, the terminal device may determine that the common timing value acquired by the terminal device is valid before the second timer expires.

For another example, the uplink synchronization validity period corresponds to a third timer. After the terminal device starts or restarts the third timer, the terminal device may determine that the uplink synchronization validity period of the terminal device is valid before the third timer expires.

For another example, a global navigation satellite system (Global navigation satellite system, GNSS) corresponds to the fourth timer. After the terminal device starts or restarts the fourth timer, the terminal device may determine that the terminal device is valid according to the information acquired by the GNSS, such as the location, time reference, or frequency reference of the terminal device, before the fourth timer expires.

For another example, the common transmission delay corresponds to a fifth timer. After the terminal device starts or restarts the fifth timer, the terminal device may determine that the common transmission delay acquired by the terminal device is valid before the fifth timer expires.

It should be understood that the first to fifth timers may be the same timer or correspond to the same timer length; or can be different timers or correspond to different timer lengths; or part of the first to fifth timers are the same timers or correspond to the same timer length; of course, in other alternative embodiments, the part of the information may not correspond to the timer, which is not specifically limited in this application.

In addition, in the NR system or the IoT system, the network device may configure an uplink synchronization timer for the terminal device to maintain uplink timing synchronization, where the uplink synchronization timer is used to control how long the MAC entity may consider that uplink of a serving cell associated with a timing advance group (Timing Advance Group, TAG) corresponding to the uplink synchronization timer is timing synchronized. The uplink synchronization timer is also generally applicable to the corresponding NTN system.

3. TA reporting in NR-NTN and IoT-NTN systems.

In the NTN system, since the transmission delay between the terminal device and the network device is larger, a timing offset value Koffset is introduced in the uplink transmission scheduling, so as to enhance the uplink scheduling timing in the NTN system. In general, a network device configures a cell common timing offset value for a cell, where the cell common timing offset value is mainly used to offset the influence caused by the timing advance TA of the UE. However, if the cell common timing offset value is far greater than the TA value of the terminal device, uplink scheduling delay of the terminal device may be caused, and thus the delay index of uplink transmission may be affected; if the cell common timing offset value is smaller than the TA value of the terminal device, insufficient processing time of the terminal device before uplink transmission may occur. Therefore, in order to match the timing offset value of the terminal device to the TA value as much as possible, the network device may also configure the dedicated timing offset value of the terminal device for the terminal device.

Based on this, the embodiment of the application provides a wireless communication method, a terminal device and a network device, which can enable a special time sequence offset value of the terminal device to be matched with a TA value as much as possible, further, the situation that the uplink scheduling delay is too large or the processing time of uplink transmission is not met can be avoided as much as possible, and the system performance is improved.

Fig. 6 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 by a terminal device. Such as the terminal device shown in fig. 1.

As shown in fig. 6, the method 200 may include:

s210, acquiring or reporting a target timing advance TA value based on the trigger event.

In other words, the terminal device may be triggered to acquire or report the target TA value by an event triggering manner; that is, the terminal device may be caused to acquire or report the target TA value under the condition that some indexes are guaranteed to be satisfied by defining an event for triggering the terminal device to acquire or report the target TA value.

In this embodiment, the acquiring or reporting of the target TA value based on the trigger event is equivalent to limiting the event for triggering the terminal device to acquire or report the target TA value, so that the terminal device acquires or reports the target TA value under the condition of ensuring that some indexes are met, which is beneficial to timely and accurately acquiring the target TA value by the network device.

In some embodiments, the S210 may include at least one of:

acquiring or reporting the target TA value under the condition that the difference value of the first TA values acquired in two adjacent times is larger than a first threshold;

acquiring or reporting the target TA value under the condition that the difference value between the maximum value and the minimum value in the first TA value acquired in the first time period is larger than the first threshold;

acquiring or reporting the target TA value under the condition that the difference value between the first TA value and the reference TA value acquired continuously for N times is larger than the first threshold, wherein N is a positive integer;

acquiring or reporting the target TA value under the condition that the difference value of the first TA values acquired in two adjacent times is larger than the first threshold and smaller than or equal to the second threshold;

acquiring or reporting the target TA value when the difference value between the maximum value and the minimum value in the first TA value acquired in the first time period is larger than the first threshold and smaller than or equal to the second threshold;

acquiring or reporting the target TA value under the condition that the difference value between the first TA value and the reference TA value acquired continuously for N times is larger than the first threshold and smaller than or equal to the second threshold;

after a target timer is started or restarted, acquiring or reporting the target TA value;

After the target timer expires, acquiring or reporting the target TA value;

under the condition of acquiring or updating non-terrestrial communication network NTN system information, acquiring or reporting the target TA value;

in the case of acquiring or updating at least one of the following information: ephemeris information, a public timing value and an offset value of the public timing value, and acquiring or reporting the target TA value;

under the condition of acquiring or updating GNSS information of a global navigation satellite system, acquiring or reporting the target TA value;

acquiring or reporting the target TA value to meet a first index; wherein the first indicator comprises at least one of: the difference value of the first TA values acquired in two adjacent times is smaller than or equal to a third threshold, the difference value of the maximum value and the minimum value in the first TA values acquired in the first time period is smaller than or equal to the third threshold, and the difference value of the first TA values acquired in N times continuously and the reference TA value is smaller than or equal to the third threshold.

In other words, the terminal device may acquire or report the target TA value if at least one of the following conditions is satisfied:

the difference value of the first TA values acquired in two adjacent times is larger than a first threshold;

the difference value between the maximum value and the minimum value in the first TA value acquired in the first time period is larger than the first threshold;

The difference value between the first TA value and the reference TA value obtained continuously for N times is larger than the first threshold;

the difference value of the first TA values acquired in two adjacent times is larger than the first threshold and smaller than or equal to the second threshold;

the difference value between the maximum value and the minimum value in the first TA value acquired in the first time period is larger than the first threshold and smaller than or equal to the second threshold;

the difference value between the first TA value and the reference TA value obtained continuously for N times is larger than the first threshold and smaller than or equal to the second threshold;

starting or restarting a target timer;

the target timer expires;

acquiring or updating non-terrestrial communication network NTN system information;

in the case of acquiring or updating at least one of the following information: ephemeris information, common timing value, offset value of the common timing value;

acquiring or updating GNSS information of a global navigation satellite system;

or, after the terminal device acquires or reports the target TA value, the terminal device may be caused to meet at least one of the following conditions:

the difference value of the first TA values acquired in two adjacent times is smaller than or equal to a third threshold, the difference value of the maximum value and the minimum value in the first TA values acquired in the first time period is smaller than or equal to the third threshold, and the difference value of the first TA values acquired in N times continuously and the reference TA value is smaller than or equal to the third threshold.

That is, the triggering time referred to in the present application may be replaced with terms such as an index or a condition, and the first index may be replaced with terms such as a condition, which is not limited in this application.

Optionally, after the target timer is started or restarted, acquiring or reporting the target TA value may include: acquiring or reporting the target TA value under the condition that the target timer is not over or is not overtime; or restarting the target timer and acquiring or reporting the target TA value under the condition that the target timer is not expired or is not overtime.

Optionally, after the expiration of the target timer, acquiring or reporting the target TA value may include: under the condition that a target timer expires or times out, acquiring or reporting the target TA value; or restarting the target timer and acquiring or reporting the target TA value under the condition that the target timer expires or times out.

Optionally, the target timer includes at least one of:

the method comprises the steps of corresponding timers of ephemeris information, common timing values and/or timers corresponding to offset values of the common timing values, timers corresponding to uplink synchronization valid periods, timers corresponding to GNSS, timers corresponding to common transmission delays and uplink synchronization timers.

In some embodiments, when the terminal device is configured with both the timer corresponding to the uplink synchronization validity period and the uplink synchronization timer, the terminal device may consider that the uplink synchronization of the terminal device fails as long as one of the timer corresponding to the uplink synchronization validity period and the uplink synchronization timer expires. Optionally, in this case, the behavior of the terminal device when the timer corresponding to the uplink synchronization validity period expires is different from the behavior of the terminal device when the uplink synchronization timer expires; or the behavior of the terminal equipment when the timer corresponding to the uplink synchronization effective period is out of date is the same as the behavior of the terminal equipment when the uplink synchronization timer is out of date.

In some embodiments, the target timer is an uplink synchronization timer, and the acquiring or reporting the target timing advance TA value based on the trigger event includes: and after the uplink synchronization timer expires, acquiring or reporting the target TA value.

In some embodiments, the target timer is a timer corresponding to an uplink synchronization validity period, and the acquiring or reporting the target timing advance TA value based on the trigger event includes: after a timer corresponding to the uplink synchronization valid period is started or restarted, the target TA value is acquired or reported; or when the timer corresponding to the uplink synchronization effective period is not expired or is not overtime, acquiring or reporting the target TA value.

In some embodiments, the first TA value is obtained based on at least one of the following information:

the TA value of the service link, the difference between the TA values of the two service links, the TA value indicated by the network device, the TA value used for uplink synchronization, the difference between the two TA values used for uplink synchronization.

Optionally, the first TA value includes at least one of:

Alternatively, the TA value of the service link may be the estimated N for the terminal device _{TA,UE-specific} . For example, the TA value of the service link may be a TA value estimated by the terminal device based on ephemeris information.

Alternatively, the TA value indicated by the network device may be N _TA . As an example, if the uplink channel includes PRACH or MsgA transmission, N _TA The value is 0.

Alternatively, the TA value for uplink synchronization may be T _TA . For example, the TA value for uplink synchronization is determined based on the TA value of the serving link and the common timing value; alternatively, the TA value for uplink synchronization is determined based on the TA value of the serving link, the common timing value, and an offset value of the common timing value.

Alternatively, T _TA ＝(N _TA +N _{TA,UE-specific} +N _TA,offset +N _TA,common )*Tc；

Wherein N is _{TA,UE-specific} The terminal device may estimate itself, for example, a TA value estimated based on ephemeris information (also referred to as a TA value of the service link); n (N) _TA,offset May be defined in a protocol, for example, may be determined according to a network band and LTE or NR coexistence situation; n (N) _TA,common Including a public timing value broadcast by the network device; n (N) _TA May be a network device indicationWherein if the uplink channel comprises PRACH or MsgA transmission, N _TA The value is 0.Tc represents a sampling time interval unit, tc=1/(480×1000×4096).

In some embodiments, the units of the first TA value include at least one of:

a sampling time interval unit, a time slot based on a first subcarrier interval, a symbol based on the first subcarrier interval, a subframe.

In some embodiments, the units of the target TA value include at least one of:

a sampling time interval unit, a time slot based on a second subcarrier spacing, a symbol based on the second subcarrier spacing, a subframe.

Optionally, the first subcarrier spacing is predefined or configured by a network device.

Optionally, the second subcarrier spacing is predefined or configured by a network device.

It should be noted that, in the embodiment of the present application, the "predefining" may be implemented by pre-storing, in a device (including, for example, a terminal device and a network device), a corresponding code, a table, or other manners that may be used to indicate relevant information, and the specific implementation manner is not limited in this application. Such as predefined, may refer to what is defined in the protocol. Alternatively, the "protocol" may refer to a standard protocol in the communication field, and may include, for example, an LTE protocol, an NR protocol, and related protocols applied in a future communication system, which is not specifically limited in this application.

Optionally, the second subcarrier spacing is the same subcarrier spacing as the first subcarrier spacing.

Optionally, the second subcarrier spacing is a different subcarrier spacing than the first subcarrier spacing.

Optionally, the first subcarrier spacing corresponds to the first TA value.

Optionally, the second subcarrier spacing corresponds to the target TA value.

Optionally, the unit of the first TA value is different from the unit of the target TA value.

Optionally, the unit of the first TA value is the same as the unit of the reference TA value.

In some embodiments, the reference TA value is obtained based on at least one of the following information:

the method comprises the steps of using a TA value for uplink synchronization last time, using a TA value of a service link last time, obtaining the TA value for uplink synchronization last time, obtaining the TA value of the service link last time, obtaining a cell public time sequence offset value, obtaining a special time sequence offset value of the terminal equipment and obtaining the time sequence offset value last time.

Optionally, the reference TA value includes at least one of:

It should be appreciated that the various TA values included in the reference TA value may refer to corresponding ones of the first TA values referred to above, and are not described in detail herein to avoid repetition.

Alternatively, the cell common timing offset value may be an offset value indicated by a network device. For example, the cell common timing offset value may be carried in a broadcast message. For another example, the cell common timing offset value is configured by the network device through a system message or common RRC signaling.

Alternatively, the dedicated timing offset value may be an offset value indicated by the network device. For example, the dedicated timing offset value may be carried in dedicated RRC signaling and/or a medium access Control (Media Access Control, MAC) Control Element (CE) of the terminal device.

Alternatively, the last used timing offset value may be a last used cell common timing offset value or a dedicated timing offset value.

In some embodiments, the first threshold is predefined or network device configured.

In some embodiments, the second threshold is predefined or network device configured.

In some embodiments, the third threshold is predefined or network device configured.

In some embodiments, the first time period is predefined or network device configured.

In some embodiments, the N is predefined or network device configured.

In some embodiments, the NTN system message is a system message proprietary in the NTN system.

In some embodiments, the parameter corresponding to the first TA value is different from the parameter corresponding to the target TA value.

As an example, the target TA value is a difference between TA values of two service links, and the first TA value is a TA value of a service link.

In some embodiments, the parameter corresponding to the first TA value is the same as the parameter corresponding to the target TA value.

As an example, the target TA value and the first TA value are both differences in TA values of two service links; or the target TA value and the first TA value are both TA values of a service link.

In some embodiments, the method 200 may further comprise:

and starting or restarting a target timer at a first moment, wherein the first moment and the target TA value have an association relation.

In other words, the terminal device starts or restarts the target timer at the first instant associated with the target TA value. Accordingly, the network device may determine a start or restart time of the target timer based on the first time associated with the target TA value. Further, the network device may determine the validity period of the target timer based on the length of the target timer.

Optionally, the first time and the target TA value have an association relationship, including: the first time is the time corresponding to the time unit of the target TA value estimated or reported by the terminal equipment; or, the first time is a target time, where the target TA value is a TA value corresponding to the target time.

The terminal device may start or restart the target timer at a time corresponding to a time unit in which the terminal device estimates or reports the target TA value. For example, the time corresponding to the time unit of the terminal device for estimating or reporting the target TA value may be a start time or an end time corresponding to the time unit of the terminal device for estimating or reporting the target TA value.

The terminal device starts or restarts the target timer at the TA value corresponding to the target time. For example, the TA value corresponding to the target time may include: and the TA value at the target time is the target TA value.

Optionally, the target time is a start time or an end time of a target time unit, and the target time unit is a time unit for acquiring, estimating or reporting the target TA value.

In other words, the time corresponding to the target TA value is a start time or an end time of the target time unit, where the target time unit is a time unit for acquiring, estimating or reporting the target TA value.

The terminal device may start or restart the target timer at the start or end of the target time unit, for example.

The terminal device may, for example, obtain or estimate or report the target TA value at the target time unit.

The terminal device may acquire, estimate, or report the target TA value in a target time unit, and start or restart a target timer at a start time or an end time of the target time unit.

It should be understood that, in the present application, the target time unit may be a time unit for estimating the target TA value, or may be a time unit for reporting the target TA value, or may be a time unit corresponding to the target TA value, which is not limited in this application.

For example, it is assumed that the terminal device estimates a target TA value in a first time unit (or the target TA value is estimated in the first time unit), and reports the target TA value in a second time unit (or the target TA value is transmitted in the second time unit), where a time unit where a time corresponding to the target TA value (i.e., the target time) is a third time unit (or the TA value at the target time is the target TA value). In other words, the target TA value may be a TA value corresponding to the third time unit estimated by the terminal device in the first time unit, or the target TA value may be a TA value corresponding to the third time unit reported by the terminal device in the second time unit.

Optionally, the first time is determined based on the first time unit, e.g. the first time is a start time or an end time of the first time unit. Optionally, the first time is determined based on the second time unit, e.g. the first time is a start time or an end time of the second time unit. Optionally, the first time is determined based on the third time unit, e.g. the first time is a start time or an end time of the third time unit.

Optionally, in the above example, the first time unit and the third time unit are the same time unit; or the second time unit and the third time unit are the same time unit.

Optionally, in the above example, there is a first offset value between the first time unit and the second time unit, the first offset value being predefined, or configured by the network device, or determined based on the processing time. Alternatively, the unit of the first offset value may be a symbol or a slot or a subframe. In some special cases, the first offset value may be 0.

Optionally, the target timer includes at least one of:

As an example and not by way of limitation, the target timer is a timer corresponding to an uplink synchronization validity period, the terminal device reports the target TA value in the target time slot, and the terminal device restarts the timer corresponding to the uplink synchronization validity period at the start time of the target time slot. Correspondingly, after receiving the target TA value reported by the terminal device, the network device determines the restart time of the timer corresponding to the uplink synchronization validity period as the start time of the target time slot, so as to determine the validity period corresponding to the timer corresponding to the uplink synchronization validity period of the terminal device.

It should be noted that, the time units referred to in this application include, but are not limited to: a frame, subframe, slot, or symbol.

In some embodiments, the target time is determined based on one of:

the method comprises the following steps of downlink time sequence of a terminal device side, downlink time sequence of a satellite side, downlink time sequence of a reference point, downlink time sequence of a network device side, uplink time sequence of the terminal device side, uplink time sequence of the satellite side, uplink time sequence of the reference point and uplink time sequence of the network device side.

Fig. 7 is a schematic diagram of a target time provided in an embodiment of the present application. In this example, assume that the target time unit is time unit n and that the target time instant m is the start time instant of the target time unit n.

As shown in fig. 7, assuming that the time m is the start time of the time unit n, where the time m is determined based on the uplink time sequence on the satellite side, the time m is the start time of the time unit n determined based on the uplink time sequence on the satellite side, that is, the target TA value corresponds to the TA value of the start time of the time unit n determined based on the uplink time sequence on the satellite side.

In some embodiments, the target TA value comprises at least one of:

the method comprises the steps of determining a TA value of a service link, a difference value between TA values of two service links, a TA value for uplink synchronization, a difference value between TA values for uplink synchronization, a position of the terminal equipment, a target time sequence offset value, a difference value between the target time sequence offset value and a cell public time sequence offset value, a difference value between the target time sequence offset value and a special time sequence offset value of the terminal equipment, and a difference value between the target time sequence offset value and a last time sequence offset value.

The target TA value reporting manner may be one or more of the following manners:

mode 1: reporting the TA value of the service link or the difference value between the TA values of the two service links;

mode 2: reporting a TA value for uplink synchronization or a difference value between the two TA values for uplink synchronization;

mode 3: reporting the position of the terminal equipment;

mode 4: reporting a TA value for uplink synchronization through Msg3, and subsequently reporting a difference value between the two TA values for uplink synchronization;

mode 5: reporting a difference value between a special time sequence offset value of the terminal equipment and a community public time sequence value;

mode 6: reporting the difference value between the target time sequence offset value and the time sequence offset value used last time;

mode 7: an indication of whether the target TA value is a difference value;

mode 8: a stability indication is reported (stationarity indication) on a mode 1 or mode 2 basis.

It should be noted that, in other alternative embodiments, the difference between a and B referred to in the present application may be replaced by the difference between B and a. For example, the difference between the target timing offset value and the last used timing offset value may be replaced by the difference between the last used timing offset value and the target timing offset value, which is not specifically limited in this application.

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.

The wireless communication method according to the embodiment of the present application is described in detail above from the perspective of the terminal device in conjunction with fig. 6 to 7, and the wireless communication method according to the embodiment of the present application will be described below from the perspective of the network device in conjunction with fig. 8.

Fig. 8 shows a schematic flow chart of a wireless communication method 300 according to an embodiment of the present application. The method 300 may be performed by a network device, such as the access network device shown in fig. 1.

As shown in fig. 8, the method 300 may include:

s310, receiving a target timing advance TA value sent by a terminal device;

s320, determining a special time sequence offset value of the terminal equipment based on the target TA value.

In some embodiments, the units of the target TA value include at least one of:

In some embodiments, the second subcarrier spacing is predefined or network device configured.

In some embodiments, the second subcarrier spacing is the same subcarrier spacing as a first subcarrier spacing, wherein the first subcarrier spacing corresponds to the first TA value.

In some embodiments, the target TA value comprises at least one of:

the method comprises the steps of determining a TA value of a service link, a difference value between TA values of two service links, a TA value for uplink synchronization, a difference value between TA values for uplink synchronization, a position of a terminal device, a target time sequence offset value, a difference value between the target time sequence offset value and a cell public time sequence offset value, a difference value between the target time sequence offset value and a special time sequence offset value of the terminal device, and a difference value between the target time sequence offset value and a last time sequence offset value.

In some embodiments, the method 300 may further comprise:

and determining the starting or restarting time of a target timer based on a first time, wherein the first time and the target TA value have an association relation.

In some embodiments, the method 300 may further comprise:

the validity period of the target timer is determined based on the length of the target timer.

In some embodiments, the first time has an association relationship with the target TA value, including: the first time is the time corresponding to the time unit of the target TA value estimated or reported by the terminal equipment; or, the first time is a target time, where the target TA value is a TA value corresponding to the target time.

In some embodiments, the target timer comprises at least one of:

In some embodiments, the target TA value is a TA value corresponding to a target time, where the target time is a start time or an end time of a target time unit, and the target time unit is a time unit for acquiring, estimating, or reporting the target TA value.

In some embodiments, the target time is determined based on one of:

It should be understood that steps and terms in method 300 may refer to corresponding steps and corresponding terms in method 200, and are not described in detail herein for brevity.

Method embodiments of the present application are described above in detail in connection with fig. 1-8, and apparatus embodiments of the present application are described below in connection with fig. 9-12.

Fig. 9 is a schematic block diagram of a terminal device 400 of an embodiment of the present application.

As shown in fig. 9, the terminal device 400 may include:

a communication unit 410, configured to acquire or report the target timing advance TA value based on the trigger event.

In some embodiments, the communication unit 410 may be specifically configured to:

after the target timer expires, acquiring or reporting the target TA value;

In some embodiments, the units of the first TA value include at least one of:

In some embodiments, the first subcarrier spacing is predefined or network device configured.

In some embodiments, the units of the target TA value include at least one of:

In some embodiments, the N is predefined or network device configured.

In some embodiments, the parameter corresponding to the first TA value is different from the parameter corresponding to the target TA value; or,

the parameters corresponding to the first TA value are the same as the parameters corresponding to the target TA value.

In some embodiments, the units of the first TA value are different from the units of the target TA value; and/or the number of the groups of groups,

the first TA value has the same unit as the reference TA value.

In some embodiments, the communication unit 410 is further configured to:

In some embodiments, the target timer comprises at least one of:

In some embodiments, the target time is determined based on one of:

In some embodiments, the target TA value comprises at least one of:

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. 9 may correspond to a corresponding main body in performing the method 200 of 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 a corresponding flow in the method shown in fig. 6, and are not described herein for brevity.

Fig. 10 is a schematic block diagram of a network device 500 of an embodiment of the present application.

As shown in fig. 10, the network device 500 may include:

a communication unit 510, configured to receive a target timing advance TA value sent by a terminal device;

a processing unit 520, configured to determine a dedicated timing offset value of the terminal device based on the target TA value.

In some embodiments, the units of the target TA value include at least one of:

In some embodiments, the target TA value comprises at least one of:

In some embodiments, the processing unit 520 may be further configured to:

In some embodiments, the target timer comprises at least one of:

In some embodiments, the target time is determined based on one of:

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. 10 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 500 are respectively for implementing a corresponding flow in the method shown in fig. 8, and 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.

For example, the communication unit 410 and the communication unit 510 referred to above may be implemented by transceivers, respectively, and the processing unit 520 referred to above may be implemented by a processor.

Fig. 11 is a schematic structural diagram of a communication apparatus 600 of an embodiment of the present application.

As shown in fig. 11, the communication device 600 may include a processor 610.

Wherein the processor 610 may call and run a computer program from a memory to implement the methods in embodiments of the present application.

As shown in fig. 11, the communication device 600 may also include a memory 620.

The memory 620 may be used to store instruction information, and may also be used to store code, instructions, etc. for execution by the processor 610. Wherein the processor 610 may call and run a computer program from the memory 620 to implement the methods in embodiments of the present application. The memory 620 may be a separate device from the processor 610 or may be integrated into the processor 610.

As shown in fig. 11, the communication device 600 may also include a transceiver 630.

The processor 610 may control the transceiver 630 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 630 may include a transmitter and a receiver. Transceiver 630 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 600 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 600 may be a terminal device of the embodiment of the present application, and the communication device 600 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 600 of the embodiment of the present application may correspond to the terminal device 400 of the embodiment of the present application, and may correspond to respective main bodies in performing the method 200 according to the embodiment of the present application, which are not described herein for brevity. Similarly, the communication device 600 may be a network device according to an embodiment of the present application, and the communication device 600 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 600 of the embodiment of the present application may correspond to the network device 500 of the embodiment of the present application, and may correspond to a corresponding body in performing the method 300 according to the embodiment of the present application, which is not described herein for brevity.

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. 12 is a schematic structural diagram of a chip 700 according to an embodiment of the present application.

As shown in fig. 12, the chip 700 includes a processor 710.

The processor 710 may call and execute a computer program from a memory to implement the methods of the embodiments of the present application.

As shown in fig. 12, the chip 700 may further include a memory 720.

Wherein the processor 710 may call and run a computer program from the memory 720 to implement the methods in embodiments of the present application. The memory 720 may be used for storing instruction information, and may also be used for storing code, instructions, etc. for execution by the processor 710. Memory 720 may be a separate device from processor 710 or may be integrated into processor 710.

As shown in fig. 12, the chip 700 may further include an input interface 730.

The processor 710 may control the input interface 730 to communicate with other devices or chips, and in particular, may obtain information or data sent by other devices or chips.

As shown in fig. 12, the chip 700 may further include an output interface 740.

The processor 710 may control the output interface 740 to communicate with other devices or chips, and in particular, may output information or data to other devices or chips.

It should be understood that the chip 700 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 700 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 wireless communication methods provided herein. 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 wireless communication method provided herein. 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. Optionally, the computer program may be applied to a mobile terminal/terminal device in the embodiments of the present application, and when the computer program runs on a computer, the computer is caused to execute corresponding processes implemented by the mobile terminal/terminal device in each method in the embodiments of the present application, which are not described herein for brevity.

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.

Those skilled in the art will further appreciate that, for convenience and brevity, specific working procedures of the above-described system, apparatus and unit 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, the method being applicable to a terminal device, the method comprising:

the target timing advance TA value is obtained or reported based on the trigger event.
The method of claim 1, wherein the acquiring or reporting the target timing advance, TA, value based on the trigger event comprises at least one of:

acquiring or reporting the target TA value under the condition that the difference value of the first TA values acquired in two adjacent times is larger than a first threshold;

acquiring or reporting the target TA value under the condition that the difference value between the maximum value and the minimum value in the first TA value acquired in the first time period is larger than the first threshold;

acquiring or reporting the target TA value under the condition that the difference value between the first TA value and the reference TA value acquired continuously for N times is larger than the first threshold, wherein N is a positive integer;

Acquiring or reporting the target TA value under the condition that the difference value of the first TA values acquired in two adjacent times is larger than the first threshold and smaller than or equal to the second threshold;

acquiring or reporting the target TA value when the difference value between the maximum value and the minimum value in the first TA value acquired in the first time period is larger than the first threshold and smaller than or equal to the second threshold;

acquiring or reporting the target TA value under the condition that the difference value between the first TA value and the reference TA value acquired continuously for N times is larger than the first threshold and smaller than or equal to the second threshold;

after a target timer is started or restarted, acquiring or reporting the target TA value;

after the target timer expires, acquiring or reporting the target TA value;

under the condition of acquiring or updating non-terrestrial communication network NTN system information, acquiring or reporting the target TA value;

in the case of acquiring or updating at least one of the following information: ephemeris information, a public timing value and an offset value of the public timing value, and acquiring or reporting the target TA value;

under the condition of acquiring or updating GNSS information of a global navigation satellite system, acquiring or reporting the target TA value;

Acquiring or reporting the target TA value to meet a first index; wherein the first indicator comprises at least one of: the difference value of the first TA values acquired in two adjacent times is smaller than or equal to a third threshold, the difference value of the maximum value and the minimum value in the first TA values acquired in the first time period is smaller than or equal to the third threshold, and the difference value of the first TA values acquired in N times continuously and the reference TA value is smaller than or equal to the third threshold.
The method of claim 2, wherein the first TA value is obtained based on at least one of:

the TA value of the service link, the difference between the TA values of the two service links, the TA value indicated by the network device, the TA value used for uplink synchronization, the difference between the two TA values used for uplink synchronization.
A method according to claim 2 or 3, wherein the units of the first TA value comprise at least one of:

a sampling time interval unit, a time slot based on a first subcarrier interval, a symbol based on the first subcarrier interval, a subframe.
The method of claim 4, wherein the first subcarrier spacing is predefined or network device configured.
The method of claim 2, wherein the units of the target TA value comprise at least one of:

a sampling time interval unit, a time slot based on a second subcarrier spacing, a symbol based on the second subcarrier spacing, a subframe.
The method of claim 6, wherein the second subcarrier spacing is predefined or network device configured.
The method according to claim 6 or 7, wherein the second subcarrier spacing is the same subcarrier spacing as a first subcarrier spacing, wherein the first subcarrier spacing corresponds to the first TA value.
The method of claim 2, wherein the reference TA value is obtained based on at least one of:

the method comprises the steps of using a TA value for uplink synchronization last time, using a TA value of a service link last time, obtaining the TA value for uplink synchronization last time, obtaining the TA value of the service link last time, obtaining a cell public time sequence offset value, obtaining a special time sequence offset value of the terminal equipment and obtaining the time sequence offset value last time.
The method of claim 2, wherein the first threshold is predefined or network device configured.
The method of claim 2, wherein the second threshold is predefined or network device configured.
The method of claim 2, wherein the third threshold is predefined or network device configured.
The method of claim 2, wherein the N is predefined or network device configured.
The method of claim 2, wherein the parameter corresponding to the first TA value is different from the parameter corresponding to the target TA value; or,

the parameters corresponding to the first TA value are the same as the parameters corresponding to the target TA value.
The method of claim 2, wherein the units of the first TA value are different from the units of the target TA value; and/or the number of the groups of groups,

the first TA value has the same unit as the reference TA value.
The method according to any one of claims 1 to 15, further comprising:

and starting or restarting a target timer at a first moment, wherein the first moment and the target TA value have an association relation.
The method of claim 16, wherein the first time instance has an association with the target TA value, comprising:

The first time is the time corresponding to the time unit of the target TA value estimated or reported by the terminal equipment; or,

the first time is a target time, wherein the target TA value is a TA value corresponding to the target time.
The method of any one of claims 2, 16 or 17, wherein the target timer comprises at least one of:

the method comprises the steps of corresponding timers of ephemeris information, common timing values and/or timers corresponding to offset values of the common timing values, timers corresponding to uplink synchronization valid periods, timers corresponding to GNSS, timers corresponding to common transmission delays and uplink synchronization timers.
The method according to any one of claims 1 to 18, wherein the target TA value is a TA value corresponding to a target time instant, the target time instant being a start time instant or an end time instant of a target time unit, the target time unit being a time unit for acquiring or estimating or reporting the target TA value.
The method of claim 17 or 19, wherein the target time is determined based on one of:

the method comprises the following steps of downlink time sequence of a terminal device side, downlink time sequence of a satellite side, downlink time sequence of a reference point, downlink time sequence of a network device side, uplink time sequence of the terminal device side, uplink time sequence of the satellite side, uplink time sequence of the reference point and uplink time sequence of the network device side.
The method according to any one of claims 1 to 20, wherein the target TA value comprises at least one of:

the method comprises the steps of determining a TA value of a service link, a difference value between TA values of two service links, a TA value for uplink synchronization, a difference value between TA values for uplink synchronization, a position of a terminal device, a target time sequence offset value, a difference value between the target time sequence offset value and a cell public time sequence offset value, a difference value between the target time sequence offset value and a special time sequence offset value of the terminal device, and a difference value between the target time sequence offset value and a last time sequence offset value.
A method of wireless communication, the method being adapted for use with a network device, the method comprising:

receiving a target Timing Advance (TA) value sent by terminal equipment;

and determining a special time sequence offset value of the terminal equipment based on the target TA value.
The method of claim 22, wherein the units of the target TA value comprise at least one of:

a sampling time interval unit, a time slot based on a second subcarrier spacing, a symbol based on the second subcarrier spacing, a subframe.
The method of claim 23, wherein the second subcarrier spacing is predefined or network device configured.
The method of claim 23 or 24, wherein the second subcarrier spacing is the same subcarrier spacing as a first subcarrier spacing, wherein the first subcarrier spacing corresponds to the first TA value.
The method of claim 2, wherein the reference TA value is obtained based on at least one of:

the method comprises the steps of using a TA value for uplink synchronization last time, using a TA value of a service link last time, obtaining the TA value for uplink synchronization last time, obtaining the TA value of the service link last time, obtaining a cell public time sequence offset value, obtaining a special time sequence offset value of the terminal equipment and obtaining the time sequence offset value last time.
The method according to any one of claims 22 to 26, wherein the target TA value is a TA value corresponding to a target time instant, the target time instant being a start time instant or an end time instant of a target time unit, the target time unit being a time unit for acquiring or estimating or reporting the target TA value.
The method of claim 27, wherein the target time is determined based on one of:

the method comprises the following steps of downlink time sequence of a terminal device side, downlink time sequence of a satellite side, downlink time sequence of a reference point, downlink time sequence of a network device side, uplink time sequence of the terminal device side, uplink time sequence of the satellite side, uplink time sequence of the reference point and uplink time sequence of the network device side.
The method according to any one of claims 22 to 28, wherein the target TA value comprises at least one of:

the method comprises the steps of determining a TA value of a service link, a difference value between TA values of two service links, a TA value for uplink synchronization, a difference value between TA values for uplink synchronization, a position of a terminal device, a target time sequence offset value, a difference value between the target time sequence offset value and a cell public time sequence offset value, a difference value between the target time sequence offset value and a special time sequence offset value of the terminal device, and a difference value between the target time sequence offset value and a last time sequence offset value.
A terminal device, comprising:

and the communication unit is used for acquiring or reporting the target Timing Advance (TA) value based on the trigger event.
A network device, comprising:

a communication unit, configured to receive a target timing advance TA value sent by a terminal device;

and the processing unit is used for determining a special time sequence offset value of the terminal equipment based on the target TA value.
A terminal device, comprising:

a processor, a memory and a transceiver, the memory for storing a computer program, the processor for invoking the transceiver to run the computer program stored in the memory to perform the method of any of claims 1 to 21.
A network device, comprising:

a processor, a memory and a transceiver, the memory for storing a computer program, the processor for invoking the transceiver to run the computer program stored in the memory to perform the method of any of claims 22 to 29.
A chip, comprising:

a processor, a memory and a transceiver, the memory for storing a computer program, the processor for invoking the transceiver to run the computer program stored in the memory to perform the method of any of claims 1 to 21 or the method of any of claims 22 to 29.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 21 or the method of any one of claims 22 to 29.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 21 or the method of any one of claims 22 to 29.
A computer program, characterized in that the computer program causes a computer to perform the method of any one of claims 1 to 21 or the method of any one of claims 22 to 29.