CN114731266B - Clock information synchronization method and device, first node, terminal and storage medium - Google Patents

Abstract

The application discloses a clock information synchronization method and device, a first node, a terminal and a storage medium, and belongs to the technical field of communication. The method comprises the following steps: acquiring terminal information of each terminal in the communication system; determining a target terminal from the terminals according to the terminal information of each terminal, wherein the target terminal is a terminal serving as a TSN clock node of a main time sensitive network; and sending a master node notification to the target terminal, wherein the master node notification is used for instructing the target terminal to synchronize TSN clock information to other terminals except the target terminal in the communication system. The scheme can realize TSN clock synchronization in the scene of using the terminal as a master TSN clock node.

Description

Clock information synchronization method, device, first node, terminal and storage medium

Technical Field

The present application relates to the field of communication technology, and in particular to a clock information synchronization method, device, first node, terminal and storage medium.

Background technique

In the Industrial Internet of Things (IIOT), the concept of Time Sensitive Network (TSN) is introduced based on the transmission requirements of latency and reliability.

In related technologies, the network is usually used as the master TSN clock node, and the UE is used as the slave TSN clock node. The network side (such as the base station) provides information for the terminal to synchronize with.

However, the TSN clock synchronization solution in the related art only supports the scenario where the network is used as the main TSN clock node and the UE is used as the auxiliary TSN clock node, resulting in a narrow application scenario of TSN clock synchronization.

Summary of the invention

The embodiment of the present application provides a clock information synchronization method, device, first node, terminal and storage medium. The technical solution is as follows:

On the one hand, an embodiment of the present application provides a clock information synchronization method, the method is performed by a first node, the first node is a network side node device in a communication system, and the method includes:

Acquiring terminal information of each terminal in the communication system;

Determine a target terminal from the terminals according to the terminal information of each terminal, the target terminal being a terminal serving as a master time-sensitive network TSN clock node;

A master node notification is sent to the target terminal, where the master node notification is used to instruct the target terminal to synchronize TSN clock information to other terminals in the communication system except the target terminal.

On the other hand, an embodiment of the present application provides a clock information synchronization method, which is executed by a terminal and includes:

receiving a master node notification sent by the first node, wherein the master node notification is sent when the first node determines that the terminal is a target terminal; the target terminal is a terminal that serves as a master time-sensitive network TSN clock node among various terminals in the communication system;

The TSN clock information of the terminal is synchronized to other terminals in the communication system except the terminal.

On the other hand, an embodiment of the present application provides a clock information synchronization method, the method is performed by a first node, the first node is a terminal side node device in a communication system, and the method includes:

Acquiring terminal information of each terminal in the communication system;

Determine a target terminal from the terminals according to the terminal information of each terminal, the target terminal being a terminal serving as a master time-sensitive network TSN clock node;

Send terminal indication information to the base station, wherein the terminal indication information is used to instruct the base station to send a master node notification to the target terminal, and the master node notification is used to instruct the target terminal to synchronize TSN clock information to other terminals in the communication system except the target terminal.

On the other hand, an embodiment of the present application provides a clock information synchronization method, characterized in that the method is executed by a terminal, and the method includes:

receiving a master node notification sent by a base station; the master node notification is sent by the base station when receiving terminal indication information; the terminal indication information is sent to the base station when the first node determines that the terminal is a target terminal; the target terminal is a terminal that serves as a master time-sensitive network TSN clock node among various terminals in the communication system;

The TSN clock information of the terminal is synchronized to other terminals in the communication system except the terminal.

On the other hand, an embodiment of the present application provides a clock information synchronization device, the device is used in a first node, the first node is a node on the network side of a communication system, and the device includes:

A terminal information acquisition module, used to acquire terminal information of each terminal in the communication system;

A target terminal determination module, configured to determine a target terminal from the terminals according to the respective terminal information of the terminals, wherein the target terminal is a terminal serving as a master time-sensitive network TSN clock node;

A notification sending module is used to send a master node notification to the target terminal, wherein the master node notification is used to instruct the target terminal to synchronize TSN clock information to other terminals in the communication system except the target terminal.

On the other hand, an embodiment of the present application provides a clock information synchronization device, used in a terminal, the device comprising:

A notification receiving module, configured to receive a master node notification sent by a first node, wherein the master node notification is sent when the first node determines that the terminal is a target terminal; the target terminal is a terminal that serves as a master time-sensitive network TSN clock node among various terminals in a communication system;

A clock information synchronization module is used to synchronize the TSN clock information of the terminal to other terminals in the communication system except the terminal.

On the other hand, an embodiment of the present application provides a clock information synchronization device, the device is used in a first node, the first node is a terminal side node device in a communication system, and the device includes:

A terminal information acquisition module, used to acquire terminal information of each terminal in the communication system;

A target terminal determination module, configured to determine a target terminal from the terminals according to the respective terminal information of the terminals, wherein the target terminal is a terminal serving as a master time-sensitive network TSN clock node;

An indication information sending module is used to send terminal indication information to a base station, wherein the terminal indication information is used to instruct the base station to send a master node notification to the target terminal, and the master node notification is used to instruct the target terminal to synchronize TSN clock information to other terminals in the communication system except the target terminal.

On the other hand, an embodiment of the present application provides a clock information synchronization device, characterized in that the device is used in a terminal, and the device includes:

A notification receiving module, configured to receive a master node notification sent by a base station; the master node notification is sent by the base station when receiving terminal indication information; the terminal indication information is sent to the base station when the first node determines that the terminal is a target terminal; the target terminal is a terminal that serves as a master time-sensitive network TSN clock node among various terminals in the communication system;

A clock information synchronization module is used to synchronize the TSN clock information of the terminal to other terminals in the communication system except the terminal.

On the other hand, an embodiment of the present application provides a terminal, which includes a processor, a memory and a transceiver, wherein the memory stores a computer program, and the computer program is used to be executed by the processor to implement the above-mentioned clock information synchronization method.

On the other hand, an embodiment of the present application provides a first node, which includes a processor, a memory and a transceiver, wherein the memory stores a computer program, and the computer program is used to be executed by the processor to implement the above-mentioned clock information synchronization method.

On the other hand, an embodiment of the present application further provides a computer-readable storage medium, in which a computer program is stored. The computer program is loaded and executed by a processor to implement the above-mentioned clock information synchronization method.

On the other hand, the present application provides a computer program product, which, when executed on a terminal, enables the terminal to execute the above-mentioned clock information synchronization method.

The technical solution provided in the embodiments of the present application can bring the following beneficial effects:

When the first node determines each terminal in the communication system or specific terminals as the target terminal of the main time-sensitive network TSN clock node based on the terminal information of each terminal, it sends a master node notification to the target terminal to trigger the target terminal to synchronize the TSN clock information to other terminals or other related terminals in the communication system except the target terminal, thereby realizing TSN clock synchronization in the scenario where the terminal is used as the main TSN clock node.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

FIG1 is a schematic diagram of a network architecture provided by an embodiment of the present application;

FIG2 is a flow chart of a clock information synchronization method provided by an embodiment of the present application;

FIG3 is a flow chart of a clock information synchronization method provided by an embodiment of the present application;

FIG4 is a flow chart of a clock information synchronization method provided by an embodiment of the present application;

FIG5 is a flow chart of a clock information synchronization method provided by an embodiment of the present application;

FIG6 is a flow chart of a clock information synchronization method provided by an embodiment of the present application;

FIG7 is a flow chart of a clock information synchronization method provided by an embodiment of the present application;

FIG8 is a block diagram of a clock information synchronization device provided by an embodiment of the present application;

FIG9 is a block diagram of a clock information synchronization device provided by an embodiment of the present application;

FIG10 is a block diagram of a clock information synchronization device provided by an embodiment of the present application;

FIG11 is a block diagram of a clock information synchronization device provided by an embodiment of the present application;

FIG12 is a schematic diagram of the structure of a terminal provided by an embodiment of the present application;

FIG13 is a schematic diagram of the structure of a first node provided by an embodiment of the present application;

FIG14 is a schematic diagram of the structure of a terminal provided by an embodiment of the present application;

FIG. 15 is a schematic diagram of the structure of a first node provided in an embodiment of the present application.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present application more clear, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

The network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. A person of ordinary skill in the art can appreciate that with the evolution of the network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are equally applicable to similar technical problems.

Please refer to FIG1 , which shows a schematic diagram of a network architecture of a communication system provided by an embodiment of the present application. The network architecture may include: a terminal 10 and a base station 20 .

The number of terminals 10 is usually multiple, and one or more terminals 10 may be distributed in the cell managed by each base station 20. The terminal 10 may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem, as well as various forms of user equipment (UE), mobile stations (MS), terminal devices, etc. For the convenience of description, in the embodiments of the present application, the above-mentioned devices are collectively referred to as terminals.

The base station 20 is a device deployed in the access network to provide wireless communication functions for the terminal 10. The base station 20 may include various forms of macro base stations, micro base stations, relay stations, access points, etc. In systems using different wireless access technologies, the names of devices with base station functions may be different. For example, in the 5G NR system, it is called gNodeB or gNB. With the evolution of communication technology, the name "base station" may change. For the convenience of description, in the embodiments of the present application, the above-mentioned devices that provide wireless communication functions for the terminal 10 are collectively referred to as base stations.

Optionally, what is not shown in Figure 1 is that the above network architecture also includes other network devices, such as: a central control node (CNC), an access and mobility management function (AMF) device, a session management function (SMF) or a user plane function (UPF) device, etc.

The "5G NR system" in the embodiments of the present disclosure may also be referred to as a 5G system or an NR system, but those skilled in the art may understand its meaning. The technical solution described in the embodiments of the present disclosure may be applicable to a 5G NR system or to a subsequent evolution system of the 5G NR system.

R16 5G IIoT requires support for the transmission of services such as factory automation, transport industry, and electrical power distribution in the 5G system. In the TSN network, the 5C network acts as a TSN bridge to provide services for the TSN network and services. To this end, the NR system needs to provide lower latency guarantees and higher clock synchronization accuracy, so that when industrial automation services are transmitted in the 5G network, the operation and connection of each point of mechanical operation are accurate and meet the time requirements.

R16 mainly supports the scenario where the network acts as the master TSN clock node and the UE acts as the slave TSN clocknode. The corresponding TSN clock information is notified from the base station to the UE, and the UE is synchronized with the base station.

Based on this assumption and the requirements of TSN service transmission, when TSN services are transmitted within 5G, UE and base station synchronization is required, and the corresponding base station provides reference time information to UE so that UE and base station are synchronized. Furthermore, in order to achieve a time accuracy of 1us, the network notifies TSN time synchronization information and more accurate time synchronization accuracy information. The reference clock information is included in the TimeReferenceInfo IE. It can be sent to the UE via broadcast or unicast, and the granularity of time synchronization accuracy is 10ns.

R16 mainly supports the scenario where the network is used as the master TSN clock node and the UE is used as the slave TSN clocknode, and the network provides information for the UE to synchronize with it. R17 needs to support the scenario where the UE is used as the master TSN clocknode. Since there are multiple UEs in the service cell, and the clock accuracy, clock local oscillator, and device errors of different UEs are different, it is necessary to determine which UE to choose as the master TSN clock node, otherwise it will cause the system TSN to be out of sync or the synchronization accuracy to be insufficient.

The subsequent embodiments of the present application propose a clock synchronization solution in a scenario supporting UE as a master TSN clock node, thereby expanding the application scenarios of TSN clock synchronization.

The technical solution of the present application will be introduced and explained below in conjunction with several exemplary embodiments.

Please refer to FIG. 2, which shows a flowchart of a clock information synchronization method provided by an embodiment of the present application. The method can be applied to a first node in a communication system corresponding to the network architecture shown in FIG. 1. The first node is a network-side node device in the above communication system. The method may include the following steps:

Step 201: Acquire terminal information of each terminal in the communication system.

Step 202: determine a target terminal from among the terminals according to the terminal information of each terminal. The target terminal is a terminal that serves as a master time-sensitive network TSN clock node among the terminals in the communication system or among specific terminals.

Optionally, the above-mentioned terminals may be all terminals in a cell served by the base station.

Optionally, the above-mentioned terminals may be some terminals in a cell served by the base station, such as terminals supporting TSN services, for example, terminals supporting certain designated TSN services.

Optionally, the target terminal may be determined in each terminal by the base station, or the target terminal may be determined in each terminal by a node determination device other than the base station and then notified to the base station.

Optionally, the target terminal may be determined by the base station in at least one specific terminal, or the target terminal may be determined by a node determination device outside the base station in at least one specific terminal and then notified to the base station.

Step 203: Send a master node notification to the target terminal.

The master node notification is used to instruct the target terminal to synchronize TSN clock information to other terminals in the communication system except the target terminal.

The master node notification is used to notify the target terminal that it is a master TSN clock node.

Optionally, in addition to sending the master node notification to the target terminal, the base station may also send the master node notification to each terminal in the communication system, except the target terminal; or, in addition to sending the master node notification to the target terminal, the base station may also send the master node notification to each terminal corresponding to the TSN service supported by the master node in the communication system, except the target terminal.

Optionally, if the first node is a base station or a UPF device, the first node may also receive TSN clock information sent by the target terminal, and send the TSN clock information to other terminals in the communication system except the target terminal.

The TSN clock information may also be referred to as TSN reference clock information, which is information used for clock synchronization between the above-mentioned terminals.

Optionally, the TSN clock information may include at least one of TSN time, TSN clock domain identifier, and TSN type.

Optionally, the TSN clock information may include at least one of TSN time, inaccuracy, reference system frame number referenceSFN, time information type time info Type, TSN clock domain identifier, and propagation delay compensation information.

The TSN time may include at least one of an arrival time, a departure time, and a reference time.

Optionally, after receiving the TSN clock information, the base station/UPF device can perform clock synchronization with the target terminal through the TSN clock information.

Optionally, the target terminal may establish a specific data radio bearer (DRB) or a specific quality of service flow (QoS flow) to support the target terminal to send TSN clock information to the base station/UPF device.

In an embodiment of the present application, after the base station/UPF device receives the TSN clock information sent by the target terminal, it can send the TSN clock information to other terminals in the communication system except the target terminal, or other related terminals of TSN corresponding to the TSN clock information except the target terminal, so as to synchronize the clocks between other terminals and the base station and the target terminal.

To summarize, in the scheme shown in the embodiment of the present application, when the first node determines each terminal in the communication system or specific terminals as the target terminal of the main time-sensitive network TSN clock node based on the terminal information of each terminal, the master node notification is sent to the target terminal to trigger the target terminal to synchronize the TSN clock information to other terminals or other related terminals in the communication system except the target terminal, thereby realizing TSN clock synchronization in the scenario where the terminal serves as the main TSN clock node.

Please refer to FIG. 3 , which shows a flowchart of a clock information synchronization method provided by an embodiment of the present application. The method can be applied to a terminal in the network architecture shown in FIG. 1 . The method may include the following steps:

Step 301, receiving a master node notification sent by a first node, where the master node notification is sent when the first node determines that the terminal is a target terminal; the target terminal is a terminal that serves as a master time-sensitive network TSN clock node among various terminals in a communication system.

Step 302: Synchronize the TSN clock information of the terminal to other terminals in the communication system except the terminal.

To summarize, in the scheme shown in the embodiment of the present application, when the first node determines that each terminal or specific terminals in the communication system are the target terminals of the main time-sensitive network TSN clock node, the first node sends a master node notification to the target terminal. In response to receiving the master node notification, the target terminal synchronizes the TSN clock information of the terminal to other terminals or other related terminals in the communication system except the target terminal, thereby realizing TSN clock synchronization in the scenario where the terminal is used as the main TSN clock node.

Please refer to FIG. 4, which shows a flowchart of a clock information synchronization method provided by an embodiment of the present application. The method can be applied to a first node in a communication system corresponding to the network architecture shown in FIG. 1. The first node is a terminal side node device in the above communication system. The method may include the following steps:

Step 401: Acquire terminal information of each terminal in the communication system.

Step 402: determine a target terminal from the terminals according to the terminal information of each terminal, where the target terminal is a terminal that serves as a master time-sensitive network TSN clock node.

Step 403, sending terminal indication information to the base station, the terminal indication information is used to instruct the base station to send the master node notification to the target terminal, the master node notification is used to instruct the target terminal to synchronize TSN clock information to other terminals in the communication system except the target terminal.

To summarize, in the scheme shown in the embodiment of the present application, when the first node determines each terminal in the communication system or specific terminals as the target terminal of the main time-sensitive network TSN clock node based on the terminal information of each terminal, the master node notification is sent to the target terminal to trigger the target terminal to synchronize the TSN clock information to other terminals or other related terminals in the communication system except the target terminal, thereby realizing TSN clock synchronization in the scenario where the terminal serves as the main TSN clock node.

Please refer to FIG. 5 , which shows a flow chart of a clock information synchronization method provided by an embodiment of the present application. The method can be applied to a terminal in the network architecture shown in FIG. 1 . The method may include the following steps:

Step 501, receiving a master node notification sent by a base station; the master node notification is sent by the base station when receiving terminal indication information; the terminal indication information is sent to the base station when the first node determines that the terminal is a target terminal; the target terminal is a terminal that serves as a master time-sensitive network TSN clock node among various terminals in the communication system.

Step 502: Synchronize the TSN clock information of the terminal to other terminals in the communication system except the terminal.

To summarize, in the scheme shown in the embodiment of the present application, when the first node determines that each terminal or specific terminals in the communication system are the target terminals of the main time-sensitive network TSN clock node, the first node sends a master node notification to the target terminal. In response to receiving the master node notification, the target terminal synchronizes the TSN clock information of the terminal to other terminals or other related terminals in the communication system except the target terminal, thereby realizing TSN clock synchronization in the scenario where the terminal is used as the main TSN clock node.

Among them, in the schemes shown in various embodiments of the present application, the target terminal can be determined by a network side node device including a base station, or by a terminal side node device in the system. The subsequent embodiments of the present application will be described using these two situations as examples.

Please refer to FIG. 6, which shows a flowchart of a clock information synchronization method provided by an embodiment of the present application. The method can be applied to the network architecture shown in FIG. 1, and is interactively executed by the first node and the terminal in FIG. 1. The first node is a network-side node device. The method may include the following steps:

Step 601: The first node obtains terminal information of each terminal in the communication system.

Optionally, the first node may be a base station, a central control node CNC, an access and mobility management function AMF device, or a session management function SMF device.

Optionally, the above terminal information can be obtained from a base station, TSN equipment, core network, CNC or each terminal.

Step 602: The first node determines a target terminal according to terminal information of each terminal. The target terminal is a terminal that serves as a master time-sensitive network TSN clock node among each terminal or specific terminals in the communication system.

Optionally, the terminal information includes at least one of terminal capability information, TSN service information, cell coverage information, terminal mobility information, terminal location information and terminal identification information;

The terminal capability information is used to indicate whether the corresponding terminal supports a high-precision clock and whether the corresponding terminal has at least one of the capabilities of being a master TSN clock node;

The TSN service information is used to indicate whether the corresponding terminal supports or will transmit TSN services, whether a specific DRB/QoS flow is established or can be established, and whether the service characteristics of the TSN services supported or transmitted by the corresponding terminal have at least one of the target terminal identifiers.

The terminal identification information is used to indicate whether the corresponding terminal has a specified terminal identification.

For example, the first node may determine a terminal that meets the conditions as the target terminal through one of the terminal capability information, TSN service information, cell coverage information, terminal mobility information, terminal location information, and terminal identification information.

For example, the first node may select a terminal that supports high-precision clocks and has the ability to serve as a master TSN clock node as the target terminal according to the terminal capability information of each terminal.

Alternatively, the first node may also select, according to the TSN service information of each terminal, a terminal that supports the TSN service and/or a terminal whose service characteristics of the TSN service meet the specified characteristics as the target terminal.

Alternatively, the first node may also select a terminal among the terminals belonging to the designated cell as the target terminal according to the cell coverage information of each terminal.

Alternatively, the first node may also select a terminal with a fixed position or a slow moving speed as the target terminal according to the terminal movement information of each terminal.

Alternatively, the first node may also select a terminal from among the terminals within a certain fixed geographical range as the target terminal according to the terminal location information of each terminal.

Alternatively, the first node may also filter out a terminal with a specified terminal identification as the target terminal according to the terminal identification information of each terminal.

When the terminal information includes two or more types of information, the first node may also screen the target terminal according to the two or more types of information in sequence according to a preset screening order.

Taking the above-mentioned terminal information including terminal capability information and TSN service information as an example, the first node can first screen out a first terminal set that supports high-precision clocks and has the ability to serve as a main TSN clock node based on the terminal capability information, and then screen out a second terminal set that supports TSN services and/or whose service characteristics of TSN services meet specified characteristics from the first terminal set, and then determine a terminal from the second terminal set as the target terminal.

Optionally, the first node is any one of a CNC, an access and mobility management function AMF device, a session management function SMF or a user plane function UPF device.

Step 603: The first node sends a master node notification to the target terminal, and correspondingly, the target terminal receives the master node notification.

Optionally, when the first node is a base station, the base station may send the master node notification to the target terminal by means of broadcast and/or dedicated radio resource control (Radio Resource Control, RRC) messages.

Optionally, the base station may also notify the target terminal through a non-access stratum (NAS) message or the like, through a non-access stratum (such as AMF).

Optionally, the first node may send the master node notification to all terminals under the base station or the service cell, or the first node may send the master node notification to terminals that execute/support TSN services.

Optionally, when the first node is a CNC, AMF, SMF or UPF device, the first node may send terminal indication information to the base station, where the terminal indication information is used to instruct the base station to send a master node notification to the target terminal.

Optionally, the terminal indication information includes:

The terminal identifier of the target terminal, the service cell identifier of the target terminal, the service base station identifier of the target terminal, the TSN clock domain identifier of the target terminal, the DRB identifier that establishes or will establish the transmission of TSN clock information, the QoS flow identifier that establishes or will establish the transmission of TSN clock information, and at least one of the TSN service identifier of the target terminal.

Step 604: The target terminal generates TSN clock information.

Optionally, the TSN clock information includes: at least one of: TSN time (including reference time, such as time), imprecision, reference system frame number reference SFN, time information type time info Type and TSN clock domain identifier.

Optionally, the TSN clock information also includes: delay compensation indication information, where the delay compensation indication information is used to indicate whether propagation delay is compensated.

Optionally, the TSN clock information may include at least one of TSN time (such as arrival time, departure time, etc.), TSN clock domain identifier, and TSN type.

Optionally, the target terminal establishes or utilizes an established specific DRB or a specific QoS flow to support the target terminal to send TSN clock information to the base station.

Optionally, after receiving the master node notification sent by the base station, the target terminal determines that it is selected as the master TSN clock node, and then the target terminal generates TSN clock information.

Step 605: The target terminal synchronizes the terminal information to other terminals in the communication system except the target terminal. Correspondingly, the other terminals receive the TSN clock information.

In a possible implementation, the target terminal may send the TSN clock information to the base station or the user plane function UPF device, so that the base station or the UPF device sends the TSN clock information to other terminals.

Alternatively, in another possible implementation, the target terminal may send the TSN clock information to other terminals through a direct communication method.

Optionally, the target terminal may periodically synchronize TSN clock information to other terminals.

Optionally, the target terminal may also synchronize the TSN clock information to the other terminals when a specified trigger condition is detected.

Optionally, the TSN clock information includes: at least one of a reference time, an imprecision, a reference system frame number reference SFN, a time information type time info Type, and a TSN clock domain identifier.

Optionally, the TSN clock information also includes: delay compensation indication information, which is used to indicate whether the propagation delay is compensated. Optionally, after receiving the master node notification sent by the base station, the target terminal determines that it is selected as the master TSN clock node, and then the target terminal sends the TSN clock information to the base station. Optionally, the TSN clock information sent for the first time can be carried in a dedicated RRC message.

After the target terminal sends the above TSN clock information for the first time, it can also synchronize the updated TSN clock information to other terminals at a certain period. Optionally, when the TSN clock information is synchronized with other terminals by the base station, the updated TSN clock information can be carried in any one of the dedicated RRC messages, MAC CE, or physical layer signaling.

Optionally, the TSN clock information may include at least one of TSN time (such as arrival time, departure time, etc.), TSN clock domain identifier, and TSN type.

The target terminal establishes or utilizes a specific DRB or a specific QoS flow established to support the target terminal to send TSN clock information to the base station. Using the DRB or QoS flow, the target terminal sends the first or subsequent TSN information to the network.

Optionally, the updated TSN clock information may also be triggered by an event, such as TSN clock information arrival, or TSN clock information update, or TSN clock information change event, or TSN clock information change granularity greater than or equal to a threshold event, etc.

Optionally, when the first node is a base station or a UPF device, the first node may receive TSN clock information sent by the target terminal, and send the TSN clock information to other terminals except the target terminal in the communication system. Accordingly, the other terminals receive the TSN clock information.

Optionally, when the first node is a base station, the first node may receive the TSN clock information periodically sent by the target terminal;

or,

When the first node is a base station, the first node may receive TSN clock information sent by the target terminal when a specified trigger condition is detected.

Optionally, the first node may notify other terminals in the communication system, except the target terminal, of the TSN clock information through a broadcast (such as SIB9) and/or a dedicated RRC message of the base station. Accordingly, other terminals may receive the TSN clock information through a broadcast (such as SIB9) and/or a dedicated RRC message.

Optionally, the base station sends the received TSN clock information to other terminals through a dedicated DRB or a specific QoS flow.

Optionally, if the base station is not the first node mentioned above, after receiving the TSN clock information, the base station also performs TSN clock synchronization with the target terminal according to the TSN clock information.

In another possible implementation, the target terminal may send TSN clock information to other terminals among the above terminals, that is, the target terminal may also send the TSN clock information directly to other terminals. For example, the target terminal may send the TSN clock information to other terminals via a direct communication sidelink.

In another possible implementation, when the target terminal sends the above-mentioned TSN clock information to the UPF device, and the UPF device sends the TSN clock information to the above-mentioned other terminals, the UPF can directly send the above-mentioned TSN clock information sent by the target terminal to the above-mentioned other terminals, or the UPF can also modify the above-mentioned TSN clock information sent by the target terminal and send it to the above-mentioned other terminals.

Step 606: Other terminals perform clock synchronization with the target terminal according to the TSN clock information.

In an embodiment of the present application, if the terminal is not selected as a master TSN clock node, the terminal performs time synchronization with the base station/UPF device and the target terminal according to the TSN clock information after receiving the TSN clock information sent by the receiving base station/UPF device. The clock information sent by the base station/UPF device can be carried in at least one of the following information: broadcast (such as SIB9), dedicated RRC message, dedicated DRB or specific QoS flow.

To summarize, in the scheme shown in the embodiment of the present application, when the first node determines that each terminal or specific terminals in the communication system are the target terminals of the main time-sensitive network TSN clock node, the first node sends a master node notification to the target terminal. In response to receiving the master node notification, the target terminal synchronizes the TSN clock information of the terminal to other terminals or other related terminals in the communication system except the target terminal, thereby realizing TSN clock synchronization in the scenario where the terminal is used as the main TSN clock node.

In addition, in the embodiment of the present application, the network side node device determines the solution of the target terminal as the master TSN clock node, and the network side can have more information to determine and select a suitable terminal, ensuring that the 5G system is controlled by the network requirements while ensuring the system TSN synchronization and synchronization accuracy requirements.

The first node mentioned above may also be a terminal-side node device in the communication system, that is, the target terminal is determined by a designated terminal or a designated terminal group among the terminals.

Please refer to FIG. 7, which shows a flowchart of a clock information synchronization method provided by an embodiment of the present application. The method can be applied to the network architecture shown in FIG. 1, and is interactively executed by the first node and the terminal in FIG. 1. The first node is a terminal-side node device. Taking the first node as a designated terminal or a designated terminal group among the terminals in the communication system as an example, the method may include the following steps:

Step 701: The first node obtains terminal information of each terminal in the communication system.

Among them, when the scheme shown in the embodiment of the present application is executed by a designated terminal, that is, the first node is the designated terminal, the designated terminal may be: the first terminal among the above-mentioned terminals that transmits TSN services; or, a terminal with a fixed geographical location among the terminals; or, a terminal indicated by a base station among the terminals; or, a terminal determined by a network-side device other than the base station among the terminals; or, a terminal among the terminals that establishes or supports a specific DRB or QoS flow; or, a terminal with a designated terminal identifier among the terminals.

Optionally, when the scheme shown in the embodiment of the present application is executed by a designated terminal group, that is, the first node is the designated terminal group, the designated terminal group is: a terminal group determined by negotiation between the terminals; or, a terminal group among the terminals indicated by the base station; or, a terminal group among the terminals determined by a network side device other than the base station.

Among them, the network side equipment other than the base station can be a CNC, an AMF device or an SMF device, etc.

Step 702: The first node determines a target terminal from among the terminals according to the terminal information of each terminal.

The target terminal is a terminal that serves as a main time-sensitive network TSN clock node among various terminals in the communication system.

Step 703: The first node sends terminal indication information to the base station; correspondingly, the base station receives the terminal indication information.

The terminal indication information is used to instruct the base station to send a master node notification to the target terminal, and the master node notification is used to instruct the target terminal to synchronize TSN clock information to other terminals in the communication system except the target terminal.

Among them, the method of determining the target terminal by a specified terminal or a specified terminal group is similar to the method of determining the target terminal by the network side node device in the embodiment shown in Figure 6 above, that is, the target terminal is determined from each terminal based on the terminal information of each terminal, which will not be repeated here.

Among them, the terminal information of the above-mentioned terminals can be obtained by the designated terminal or the designated terminal group from the base station, the core network, the CNC or other terminals outside the designated terminal or the designated terminal group.

The terminal indication information includes:

The terminal identifier of the target terminal, the service cell identifier of the target terminal, the service base station identifier of the target terminal, the TSN clock domain identifier of the target terminal, the DRB identifier for establishing or to establish the transmission of TSN clock information, the QoS flow identifier for establishing or to establish the transmission of TSN clock information, and at least one of the TSN service identifier of the target terminal.

Optionally, the first node may also send terminal indication information to at least one of the CNC, AMF device, SMF device or user plane function UPF device.

Step 704: The base station sends a master node notification to the relevant device, and correspondingly, the relevant device receives the master node notification.

Optionally, the base station may send the master node notification to the target terminal by means of broadcast and/or dedicated RRC message.

Optionally, the base station may also notify the target terminal through a NAS message or the like through a non-access layer (such as AMF).

Optionally, the base station may send the master node notification to all terminals under the base station or the service cell, or the base station may send the master node notification to the terminals that execute/support TSN services.

Optionally, the base station may also send the above-mentioned terminal indication information to at least one of the CNC, AMF device, SMF device or UPF device.

Step 705: The target terminal generates TSN clock information.

Optionally, the TSN clock information includes: at least one of a reference time, an imprecision, a reference system frame number reference SFN, a time information type time info Type, and a TSN clock domain identifier.

Optionally, the TSN clock information also includes: delay compensation indication information, where the delay compensation indication information is used to indicate whether propagation delay is compensated.

Optionally, the TSN clock information may include at least one of TSN time (such as arrival time, departure time, etc.), TSN clock domain identifier, and TSN type.

Optionally, the target terminal establishes or utilizes an established specific DRB or a specific QoS flow to support the target terminal to send TSN clock information to the base station.

Optionally, after receiving the master node notification sent by the base station, the target terminal determines that it is selected as the master TSN clock node, and then the target terminal generates TSN clock information.

Step 706: The target terminal synchronizes the TSN clock information to other terminals in the communication system except the target terminal.

Optionally, the target terminal may periodically synchronize TSN clock information to the other terminals;

or,

The target terminal can synchronize TSN clock information to other terminals when a specified trigger condition is detected.

For example, taking the example of the target terminal synchronizing TSN clock information to other terminals through the base station, the target terminal sends TSN clock information to the base station, and correspondingly, the base station receives the TSN clock information sent by the target terminal. Afterwards, the base station sends the TSN clock information to other terminals in the communication system except the target terminal, and correspondingly, the other terminals receive the TSN clock information.

Optionally, the terminal periodically sends TSN clock information to the base station, and correspondingly, the base station receives the TSN clock information periodically sent by the target terminal.

Optionally, the TSN clock information includes: at least one of a reference time, an imprecision, a reference system frame number reference SFN, a time information type time info Type, and a TSN clock domain identifier.

Optionally, the TSN clock information also includes: delay compensation indication information, where the delay compensation indication information is used to indicate whether propagation delay is compensated.

Optionally, after receiving the master node notification sent by the base station, the target terminal determines that it is selected as the master TSN clock node, and then the target terminal sends TSN clock information to the base station. Optionally, the TSN clock information sent for the first time can be carried in a dedicated RRC message.

After sending the TSN clock information for the first time, the target terminal may also send updated TSN clock information to the base station at a certain period. Optionally, the updated TSN clock information may be carried in any one of a dedicated RRC message, MAC CE, or physical layer signaling.

Optionally, the TSN clock information may include at least one of TSN time (such as arrival time, departure time, etc.), TSN clock domain identifier, and TSN type.

The target terminal establishes or utilizes a specific DRB or a specific QoS flow established to support the target terminal to send TSN clock information to the base station. The DRB or QoS flow is used to send the first or subsequent TSN information to the network.

Optionally, the updated TSN clock information may also be triggered by an event, such as TSN clock information arrival, or TSN clock information update, or TSN clock information change event, or TSN clock information change granularity greater than or equal to a threshold event, etc.

Optionally, in an embodiment of the present application, the target terminal may also send master node indication information to other terminals among the terminals, where the master node indication information is used to indicate that the terminal is a terminal serving as a master time-sensitive network TSN clock node.

For example, the target terminal may send the master node indication information to other terminals among the terminals through the direct communication sidelink.

Optionally, when the target terminal is not a designated terminal or does not belong to a designated terminal group, the other terminals may include the designated terminal or designated terminal group.

Optionally, the base station may notify other terminals in the communication system, except the target terminal, of the TSN clock information through broadcast (such as SIB9) and/or dedicated RRC messages. Accordingly, other terminals may receive the TSN clock information through broadcast (such as SIB9) and/or dedicated RRC messages.

Optionally, the base station sends the received TSN clock information to other terminals through a dedicated DRB or a specific QoS flow.

Optionally, after receiving the TSN clock information, the base station further performs TSN clock synchronization with the target terminal according to the TSN clock information.

In another possible implementation, the target terminal may directly send the TSN clock information to other terminals. For example, the target terminal may send the TSN clock information to other terminals via a sidelink direct communication.

In another possible implementation, the target terminal may also send the TSN clock information to the UPF device, and the UPF device may send the TSN clock information to the other terminals. Accordingly, the UPF may directly send the TSN clock information sent by the target terminal to the other terminals, or the UPF may modify the TSN clock information sent by the target terminal and send it to the other terminals.

Step 707: other terminals perform clock synchronization with the target terminal according to the TSN clock information.

In an embodiment of the present application, if the terminal is not selected as a master TSN clock node, the terminal performs time synchronization with the base station and the target terminal according to the TSN clock information after receiving the TSN clock information sent by the receiving base station. The clock information sent by the base station can be carried in at least one of the following information: broadcast (such as SIB9), dedicated RRC message, dedicated DRB or specific QoS flow.

To summarize, in the scheme shown in the embodiment of the present application, when the first node determines that each terminal or specific terminals in the communication system are the target terminals of the main time-sensitive network TSN clock node, the first node sends a master node notification to the target terminal. In response to receiving the master node notification, the target terminal synchronizes the TSN clock information of the terminal to other terminals or other related terminals in the communication system except the target terminal, thereby realizing TSN clock synchronization in the scenario where the terminal is used as the main TSN clock node.

In addition, in the embodiment of the present application, the solution of determining the target terminal as the master TSN clock node by the designated terminal/designated terminal group can provide a more flexible and real-time master TSN clock node selection method.

The following are device embodiments of the present application, which can be used to execute the method embodiments of the present application. For details not disclosed in the device embodiments of the present application, please refer to the method embodiments of the present application.

Please refer to Figure 8, which shows a block diagram of a clock information synchronization device provided by an embodiment of the present application. The device has the function of implementing the above-mentioned clock information synchronization method example, and the function can be implemented by hardware, or by hardware executing corresponding software. The device can be the first node introduced above, or it can be set in the first node; the first node can be a network side node device. As shown in Figure 8, the device may include:

The terminal information acquisition module 801 is used to acquire the terminal information of each terminal in the communication system;

A target terminal determination module 802 is used to determine a target terminal from the terminals according to the terminal information of each terminal, wherein the target terminal is a terminal serving as a master time-sensitive network TSN clock node;

The notification sending module 803 is used to send a master node notification to the target terminal, where the master node notification is used to instruct the target terminal to synchronize TSN clock information to other terminals in the communication system except the target terminal.

Optionally, the first node is a base station, a central control node CNC, an access and mobility management function AMF device, a session management function SMF device, or a user plane function UPF device.

Optionally, the notification sending module 803 is used to send terminal indication information to the base station when the first node is a CNC, an AMF device, an SMF device or a UPF device, and the terminal indication information is used to instruct the base station to send the master node notification to the target terminal.

Optionally, the terminal indication information includes:

The terminal identifier of the target terminal, the service cell identifier of the target terminal, the service base station identifier of the target terminal, the TSN clock domain identifier of the target terminal, the DRB identifier for establishing or to establish the transmission of TSN clock information, the QoS flow identifier for establishing or to establish the transmission of TSN clock information, and at least one of the TSN service identifier of the target terminal.

Optionally, the device further comprises:

A clock information receiving module, used for receiving the TSN clock information sent by the target terminal when the first node is a base station or a UPF device;

The clock information sending module is used to send the TSN clock information to other terminals in the communication system except the target terminal.

Optionally, the clock information receiving module is used to:

Receiving the TSN clock information periodically sent by the target terminal;

or,

The TSN clock information sent by the target terminal when a specified trigger condition is detected is received.

Optionally, the terminal information includes at least one of terminal capability information, TSN service information, cell coverage information, terminal mobility information, terminal location information and terminal identification information;

The terminal capability information is used to indicate whether the corresponding terminal supports a high-precision clock and whether the corresponding terminal has at least one of the capabilities of being a master TSN clock node;

The TSN service information is used to indicate whether the corresponding terminal supports or will transmit the TSN service, whether the corresponding terminal establishes or supports the establishment of a specific DRB or a quality of service flow QoS flow, and at least one of the service characteristics of the TSN service that the corresponding terminal supports or will transmit;

The terminal identification information is used to indicate whether the corresponding terminal has a specified terminal identification.

To summarize, in the scheme shown in the embodiment of the present application, when the first node determines each terminal in the communication system or specific terminals as the target terminal of the main time-sensitive network TSN clock node based on the terminal information of each terminal, the master node notification is sent to the target terminal to trigger the target terminal to synchronize the TSN clock information to other terminals or other related terminals in the communication system except the target terminal, thereby realizing TSN clock synchronization in the scenario where the terminal serves as the main TSN clock node.

Please refer to Figure 9, which shows a block diagram of a clock information synchronization device provided by an embodiment of the present application. The device has the function of implementing the above-mentioned clock information synchronization method example, and the function can be implemented by hardware or by hardware executing corresponding software. The device can be the terminal introduced above, or it can be set in the terminal. As shown in Figure 9, the device may include:

The notification receiving module 901 is used to receive a master node notification sent by the first node, where the master node notification is sent when the first node determines that the terminal is a target terminal; the target terminal is a terminal that serves as a master time-sensitive network TSN clock node among various terminals in the communication system;

The clock information synchronization module 902 is used to synchronize the TSN clock information of the terminal to other terminals in the communication system except the terminal.

Optionally, the clock information synchronization module 902 is used to:

Sending the TSN clock information to a base station or a user plane function UPF device, so that the base station or the UPF device sends the TSN clock information to the other terminal;

or,

The TSN clock information is sent to the other terminal by direct communication.

Optionally, the device further comprises:

The master node indication module is used to send master node indication information to the other terminals, where the master node indication information is used to indicate that the terminal is a terminal serving as a master time-sensitive network TSN clock node.

Optionally, the clock information synchronization module is used to:

Periodically synchronizing the TSN clock information to the other terminals;

or,

When a specified trigger condition is detected, the TSN clock information is synchronized to the other terminals.

To summarize, in the scheme shown in the embodiment of the present application, when the first node determines that each terminal or specific terminals in the communication system are the target terminals of the main time-sensitive network TSN clock node, the first node sends a master node notification to the target terminal. In response to receiving the master node notification, the target terminal synchronizes the TSN clock information of the terminal to other terminals or other related terminals in the communication system except the target terminal, thereby realizing TSN clock synchronization in the scenario where the terminal is used as the main TSN clock node.

Please refer to Figure 10, which shows a block diagram of a clock information synchronization device provided by an embodiment of the present application. The device has the function of implementing the above-mentioned clock information synchronization method example, and the function can be implemented by hardware, or by hardware executing corresponding software. The device can be the first node introduced above, or it can be set in the first node; the first node can be a terminal side node device. As shown in Figure 10, the device may include:

The terminal information acquisition module 1001 is used to acquire the terminal information of each terminal in the communication system;

A target terminal determination module 1002 is used to determine a target terminal from the terminals according to the terminal information of each terminal, wherein the target terminal is a terminal serving as a master time-sensitive network TSN clock node;

The indication information sending module 1003 is used to send terminal indication information to the base station, and the terminal indication information is used to instruct the base station to send a master node notification to the target terminal, and the master node notification is used to instruct the target terminal to synchronize TSN clock information to other terminals in the communication system except the target terminal.

Optionally, when the first node is a designated terminal, the designated terminal is:

A first terminal among the terminals that transmits a TSN service;

Or, a terminal with a fixed geographical location among the terminals;

Or, a terminal indicated by a base station among the terminals;

Or, a terminal among the terminals determined by a network-side device other than a base station;

Alternatively, a terminal among the terminals that establishes or supports a specific DRB or QoS flow;

Alternatively, a terminal having a designated terminal identifier among the terminals.

Optionally, when the first node is a designated terminal group, the designated terminal group is:

A terminal group determined by negotiation between the terminals;

Or, a terminal group indicated by the base station among the terminals;

Alternatively, the terminal group among the terminals is determined by a network side device other than the base station.

Optionally, the indication information sending module 1003 is further used to:

The terminal indication information is sent to at least one of the CNC, AMF device, SMF device or user plane function UPF device.

Optionally, the terminal indication information includes:

The terminal identifier of the target terminal, the service cell identifier of the target terminal, the service base station identifier of the target terminal, the TSN clock domain identifier of the target terminal, the DRB identifier for establishing or to establish the transmission of TSN clock information, the QoS flow identifier for establishing or to establish the transmission of TSN clock information, and at least one of the TSN service identifier of the target terminal.

Optionally, the terminal information includes at least one of terminal capability information, TSN service information, cell coverage information, terminal mobility information, terminal location information and terminal identification information;

The terminal capability information is used to indicate whether the corresponding terminal supports a high-precision clock and whether the corresponding terminal has at least one of the capabilities of being a master TSN clock node;

The TSN service information is used to indicate whether the corresponding terminal supports or will transmit the TSN service, whether the corresponding terminal establishes or supports the establishment of a specific DRB or a quality of service flow QoS flow, and at least one of the service characteristics of the TSN service that the corresponding terminal supports or will transmit;

The terminal identification information is used to indicate whether the corresponding terminal has a specified terminal identification.

To summarize, in the scheme shown in the embodiment of the present application, when the first node determines each terminal in the communication system or specific terminals as the target terminal of the main time-sensitive network TSN clock node based on the terminal information of each terminal, the master node notification is sent to the target terminal to trigger the target terminal to synchronize the TSN clock information to other terminals or other related terminals in the communication system except the target terminal, thereby realizing TSN clock synchronization in the scenario where the terminal serves as the main TSN clock node.

Please refer to Figure 11, which shows a block diagram of a clock information synchronization device provided by an embodiment of the present application. The device has the function of implementing the above-mentioned clock information synchronization method example, and the function can be implemented by hardware or by hardware executing corresponding software. The device can be the terminal introduced above, or it can be set in the terminal. As shown in Figure 11, the device may include:

The notification receiving module 1101 is used to receive a master node notification sent by a base station; the master node notification is sent by the base station when receiving terminal indication information; the terminal indication information is sent to the base station when the first node determines that the terminal is a target terminal; the target terminal is a terminal that serves as a master time-sensitive network TSN clock node among various terminals in the communication system;

The clock information synchronization module 1102 is used to synchronize the TSN clock information of the terminal to other terminals in the communication system except the terminal.

Optionally, the clock information synchronization module 1102 is used to:

Sending the TSN clock information to the base station or the user plane function UPF device, so that the base station or the UPF device sends the TSN clock information to the other terminal;

or,

The TSN clock information is sent to the other terminal by direct communication.

Optionally, the device further comprises:

The master node indication module is used to send master node indication information to the other terminals, where the master node indication information is used to indicate that the terminal is a terminal serving as a master time-sensitive network TSN clock node.

Optionally, the clock information synchronization module 1102 is used to:

Periodically synchronizing the TSN clock information to the other terminals;

or,

When a specified trigger condition is detected, the TSN clock information is synchronized to the other terminals.

To summarize, in the scheme shown in the embodiment of the present application, when the first node determines that each terminal or specific terminals in the communication system are the target terminals of the main time-sensitive network TSN clock node, the first node sends a master node notification to the target terminal. In response to receiving the master node notification, the target terminal synchronizes the TSN clock information of the terminal to other terminals or other related terminals in the communication system except the target terminal, thereby realizing TSN clock synchronization in the scenario where the terminal is used as the main TSN clock node.

One point that needs to be explained is that, when the device provided in the above embodiment realizes its function, it only uses the division of the above-mentioned functional modules as an example. In actual application, the above-mentioned functions can be assigned to different functional modules according to actual needs, that is, the content structure of the device can be divided into different functional modules to complete all or part of the functions described above.

Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

Please refer to FIG12 , which shows a schematic diagram of the structure of a terminal 120 provided in an embodiment of the present application. The terminal 120 may include: a processor 121 , a receiver 122 , a transmitter 123 , a memory 124 and a bus 125 .

The processor 121 includes one or more processing cores. The processor 121 executes various functional applications and information processing by running software programs and modules.

The receiver 122 and the transmitter 123 may be implemented as a communication component, which may be a communication chip, which may also be called a transceiver.

The memory 124 is connected to the processor 121 via a bus 125 .

The memory 124 may be used to store a computer program, and the processor 121 may be used to execute the computer program to implement each step performed by the terminal in the above method embodiment.

In addition, the memory 124 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, and the volatile or non-volatile storage device includes but is not limited to: a magnetic disk or an optical disk, an electrically erasable programmable read-only memory (EEPROM), an erasable programmable read-only memory (EPROM), a static random access memory (SRAM), a read-only memory (ROM), a magnetic memory, a flash memory, and a programmable read-only memory (PROM).

In an exemplary embodiment, the terminal includes a processor, a memory, and a transceiver (the transceiver may include a receiver and a transmitter, the receiver is used to receive information, and the transmitter is used to send information);

The transceiver is used to receive a master node notification sent by a base station; the master node notification is sent by the base station when receiving terminal indication information; the terminal indication information is sent to the base station when the first node determines that the terminal is a target terminal; the target terminal is a terminal that serves as a master time-sensitive network TSN clock node among various terminals in the communication system;

The transceiver is further used to synchronize the TSN clock information of the terminal to other terminals in the communication system except the terminal.

In a possible implementation, when synchronizing the TSN clock information of the terminal to other terminals in the communication system except the terminal, the transceiver is used to:

Sending the TSN clock information to a base station or a user plane function UPF device, so that the base station or the UPF device sends the TSN clock information to the other terminal;

or,

The TSN clock information is sent to the other terminal by direct communication.

In a possible implementation, the transceiver is further used to send master node indication information to the other terminal, where the master node indication information is used to indicate that the terminal is a terminal serving as a master time-sensitive network TSN clock node.

In a possible implementation, when synchronizing the TSN clock information of the terminal to other terminals in the communication system except the terminal, the transceiver is used to:

Periodically synchronizing the TSN clock information to the other terminals;

or,

When a specified trigger condition is detected, the TSN clock information is synchronized to the other terminals.

Please refer to Figure 13, which shows a schematic diagram of the structure of a first node 130 provided in an embodiment of the present application, the first node is a network-side node device in a communication system. The base station 130 may include: a processor 131, a receiver 132, a transmitter 133, a memory 134 and a bus 135.

The processor 131 includes one or more processing cores. The processor 131 executes various functional applications and information processing by running software programs and modules.

The receiver 132 and the transmitter 133 may be implemented as a communication component, which may be a communication chip, which may also be called a transceiver.

The memory 134 is connected to the processor 131 via a bus 135 .

The memory 134 may be used to store a computer program, and the processor 131 may be used to execute the computer program to implement each step performed by the base station in the above method embodiment.

In addition, the memory 134 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, and the volatile or non-volatile storage device includes but is not limited to: a magnetic disk or an optical disk, an electrically erasable programmable read-only memory (EEPROM), an erasable programmable read-only memory (EPROM), a static random access memory (SRAM), a read-only memory (ROM), a magnetic memory, a flash memory, and a programmable read-only memory (PROM).

In an exemplary embodiment, the base station includes a processor, a memory, and a transceiver (the transceiver may include a receiver and a transmitter, the receiver is used to receive information, and the transmitter is used to send information);

The processor is used to obtain terminal information of each terminal in the communication system;

The processor is configured to determine a target terminal from the terminals according to the terminal information of each terminal, wherein the target terminal is a terminal serving as a master time-sensitive network TSN clock node;

The transceiver is used to send a master node notification to the target terminal, and the master node notification is used to instruct the target terminal to synchronize TSN clock information to other terminals in the communication system except the target terminal.

In a possible implementation, the first node is a base station, a central control node CNC, an access and mobility management function AMF device, a session management function SMF device, or a user plane function UPF device.

In a possible implementation, when the first node is a CNC, an AMF device, an SMF device, or a UPF device, the transceiver is used to:

Send terminal indication information to a base station, where the terminal indication information is used to instruct the base station to send the master node notification to the target terminal.

In a possible implementation manner, the terminal indication information includes:

The terminal identifier of the target terminal, the service cell identifier of the target terminal, the service base station identifier of the target terminal, the TSN clock domain identifier of the target terminal, the DRB identifier for establishing or to establish the transmission of TSN clock information, the QoS flow identifier for establishing or to establish the transmission of TSN clock information, and at least one of the TSN service identifier of the target terminal.

In a possible implementation manner, when the first node is a base station or a UPF device, the transceiver is further configured to:

Receiving the TSN clock information sent by the target terminal;

The TSN clock information is sent to other terminals in the communication system except the target terminal.

In a possible implementation, the transceiver is used to:

Receiving the TSN clock information periodically sent by the target terminal;

or,

The TSN clock information sent by the target terminal when a specified trigger condition is detected is received.

In a possible implementation manner, the terminal information includes at least one of terminal capability information, TSN service information, cell coverage information, terminal mobility information, terminal location information, and terminal identification information;

The terminal capability information is used to indicate whether the corresponding terminal supports a high-precision clock and whether the corresponding terminal has at least one of the capabilities of being a master TSN clock node;

The TSN service information is used to indicate whether the corresponding terminal supports or will transmit the TSN service, whether the corresponding terminal establishes or supports the establishment of a specific DRB or a quality of service flow QoS flow, and at least one of the service characteristics of the TSN service that the corresponding terminal supports or will transmit;

The terminal identification information is used to indicate whether the corresponding terminal has a specified terminal identification.

Please refer to FIG14 , which shows a schematic diagram of the structure of a terminal 140 provided in an embodiment of the present application. The terminal 140 may include: a processor 141 , a receiver 142 , a transmitter 143 , a memory 144 and a bus 145 .

The processor 141 includes one or more processing cores. The processor 141 executes various functional applications and information processing by running software programs and modules.

The receiver 142 and the transmitter 143 may be implemented as a communication component, which may be a communication chip, which may also be called a transceiver.

The memory 144 is connected to the processor 141 via a bus 145 .

The memory 144 may be used to store a computer program, and the processor 141 may be used to execute the computer program to implement each step executed by the terminal in the above method embodiment.

In addition, the memory 144 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, and the volatile or non-volatile storage device includes but is not limited to: a magnetic disk or an optical disk, an electrically erasable programmable read-only memory (EEPROM), an erasable programmable read-only memory (EPROM), a static random access memory (SRAM), a read-only memory (ROM), a magnetic memory, a flash memory, and a programmable read-only memory (PROM).

In an exemplary embodiment, the terminal includes a processor, a memory, and a transceiver (the transceiver may include a receiver and a transmitter, the receiver is used to receive information, and the transmitter is used to send information);

The transceiver is used to receive a master node notification sent by a base station; the master node notification is sent by the base station when receiving terminal indication information; the terminal indication information is sent to the base station when the first node determines that the terminal is a target terminal; the target terminal is a terminal that serves as a master time-sensitive network TSN clock node among various terminals in the communication system;

The transceiver is further used to synchronize the TSN clock information of the terminal to other terminals in the communication system except the terminal.

In a possible implementation, when synchronizing the TSN clock information of the terminal to other terminals in the communication system except the terminal, the transceiver is used to:

Sending the TSN clock information to a base station or a user plane function UPF device, so that the base station or the UPF device sends the TSN clock information to the other terminal;

or,

The TSN clock information is sent to the other terminal by direct communication.

In a possible implementation, the transceiver is further used to send master node indication information to the other terminal, where the master node indication information is used to indicate that the terminal is a terminal serving as a master time-sensitive network TSN clock node.

In a possible implementation, when synchronizing the TSN clock information of the terminal to other terminals in the communication system except the terminal, the transceiver is used to:

Periodically synchronizing the TSN clock information to the other terminals;

or,

When a specified trigger condition is detected, the TSN clock information is synchronized to the other terminals.

Please refer to Figure 15, which shows a schematic diagram of the structure of a first node 150 provided in an embodiment of the present application, the first node is a network-side node device in a communication system. The base station 150 may include: a processor 151, a receiver 152, a transmitter 153, a memory 154 and a bus 155.

The processor 151 includes one or more processing cores. The processor 151 executes various functional applications and information processing by running software programs and modules.

The receiver 152 and the transmitter 153 may be implemented as a communication component, which may be a communication chip, which may also be called a transceiver.

The memory 154 is connected to the processor 151 via a bus 155 .

The memory 154 may be used to store a computer program, and the processor 151 may be used to execute the computer program to implement each step performed by the base station in the above method embodiment.

In addition, the memory 154 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, and the volatile or non-volatile storage device includes but is not limited to: a magnetic disk or an optical disk, an electrically erasable programmable read-only memory (EEPROM), an erasable programmable read-only memory (EPROM), a static random access memory (SRAM), a read-only memory (ROM), a magnetic memory, a flash memory, and a programmable read-only memory (PROM).

In an exemplary embodiment, the base station includes a processor, a memory, and a transceiver (the transceiver may include a receiver and a transmitter, the receiver is used to receive information, and the transmitter is used to send information);

The processor is used to obtain terminal information of each terminal in the communication system;

The processor is configured to determine a target terminal from the terminals according to the terminal information of each terminal, wherein the target terminal is a terminal serving as a master time-sensitive network TSN clock node;

The transceiver is used to send terminal indication information to the base station, and the terminal indication information is used to instruct the base station to send a master node notification to the target terminal, and the master node notification is used to instruct the target terminal to synchronize TSN clock information to other terminals in the communication system except the target terminal.

In a possible implementation manner, when the first node is a designated terminal, the designated terminal is:

A first terminal among the terminals that transmits a TSN service;

Or, a terminal with a fixed geographical location among the terminals;

Or, a terminal indicated by a base station among the terminals;

Or, a terminal among the terminals determined by a network-side device other than a base station;

Alternatively, a terminal among the terminals that establishes or supports a specific DRB or QoS flow;

Alternatively, a terminal having a designated terminal identifier among the terminals.

In a possible implementation manner, when the first node is a designated terminal group, the designated terminal group is:

A terminal group determined by negotiation among the terminals;

Or, a terminal group indicated by the base station among the terminals;

Alternatively, the terminal group among the terminals is determined by a network side device other than the base station.

In a possible implementation, the transceiver is also used to send the terminal indication information to at least one of the CNC, AMF device, SMF device or user plane function UPF device.

In a possible implementation manner, the terminal indication information includes:

The terminal identifier of the target terminal, the service cell identifier of the target terminal, the service base station identifier of the target terminal, the TSN clock domain identifier of the target terminal, the DRB identifier for establishing or to establish the transmission of TSN clock information, the QoS flow identifier for establishing or to establish the transmission of TSN clock information, and at least one of the TSN service identifier of the target terminal.

In a possible implementation manner, the terminal information includes at least one of terminal capability information, TSN service information, cell coverage information, terminal mobility information, terminal location information, and terminal identification information;

The terminal capability information is used to indicate whether the corresponding terminal supports a high-precision clock and whether the corresponding terminal has at least one of the capabilities of being a master TSN clock node;

The TSN service information is used to indicate whether the corresponding terminal supports or will transmit the TSN service, whether the corresponding terminal establishes or supports the establishment of a specific DRB or a quality of service flow QoS flow, and at least one of the service characteristics of the TSN service that the corresponding terminal supports or will transmit;

The terminal identification information is used to indicate whether the corresponding terminal has a specified terminal identification.

An embodiment of the present application further provides a computer-readable storage medium, in which a computer program is stored. The computer program is loaded and executed by a processor to implement the above-mentioned clock information synchronization method.

An embodiment of the present application further provides a computer-readable storage medium, in which a computer program is stored. The computer program is loaded and executed by a processor to implement the above-mentioned clock information synchronization method.

The present application also provides a computer program product. When the computer program product is run on a terminal, the terminal executes the above-mentioned clock information synchronization method.

The present application also provides a computer program product. When the computer program product runs on a base station, the base station executes the above-mentioned clock information synchronization method.

Those skilled in the art should be aware that in one or more of the above examples, the functions described in the embodiments of the present application can be implemented with hardware, software, firmware, or any combination thereof. When implemented using software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein the communication media include any media that facilitates the transmission of a computer program from one place to another. The storage medium can be any available medium that a general or special-purpose computer can access.

The above description is only an exemplary embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims (47)

1. A clock information synchronization method, characterized in that the method is performed by a first node, the first node is a network-side node device in a communication system, and the method comprises: Acquire terminal information of each terminal in the communication system, wherein the terminal information includes at least one of terminal capability information, time-sensitive network (TSN) service information, cell coverage information, terminal mobility information, terminal location information, and terminal identification information; According to the terminal information of each terminal, a target terminal is determined from the terminals, the target terminal being a terminal serving as a master TSN clock node, specifically: determining a terminal that meets the conditions as the target terminal based on at least one of the terminal capability information, the TSN service information, the cell coverage information, the terminal mobility information, the terminal location information, and the terminal identification information according to a preset screening order; A master node notification is sent to the target terminal, where the master node notification is used to instruct the target terminal to synchronize TSN clock information to other terminals in the communication system except the target terminal, thereby realizing TSN clock synchronization in a scenario where the target terminal serves as a master TSN clock node. 2. The method according to claim 1 is characterized in that the first node is a base station, a central control node CNC, an access and mobility management function AMF device, a session management function SMF device or a user plane function UPF device. 3. The method according to claim 2, characterized in that when the first node is a CNC, an AMF device, an SMF device or a UPF device, the sending of a master node notification to the target terminal comprises: Send terminal indication information to a base station, where the terminal indication information is used to instruct the base station to send the master node notification to the target terminal. 4. The method according to claim 3, wherein the terminal indication information comprises: The terminal identifier of the target terminal, the service cell identifier of the target terminal, the service base station identifier of the target terminal, the TSN clock domain identifier of the target terminal, the data radio bearer DRB identifier that establishes or will establish the transmission of TSN clock information, the service quality flow QoS flow identifier that establishes or will establish the transmission of TSN clock information, and at least one of the TSN service identifier of the target terminal. 5. The method according to claim 2, characterized in that when the first node is a base station or a UPF device, the method further comprises: Receiving the TSN clock information sent by the target terminal; The TSN clock information is sent to other terminals in the communication system except the target terminal. 6. The method according to claim 5, characterized in that the receiving the TSN clock information sent by the target terminal comprises: Receiving the TSN clock information periodically sent by the target terminal; or, The TSN clock information sent by the target terminal when a specified trigger condition is detected is received. 7. The method according to any one of claims 1 to 6, characterized in that the terminal capability information is used to indicate at least one of whether the corresponding terminal supports a high-precision clock and whether the corresponding terminal has the capability of being a master TSN clock node; The TSN service information is used to indicate whether the corresponding terminal supports or will transmit the TSN service, whether the corresponding terminal establishes or supports the establishment of a specific DRB or QoS flow, and at least one of the service characteristics of the TSN service that the corresponding terminal supports or will transmit; The terminal identification information is used to indicate whether the corresponding terminal has a specified terminal identification. 8. A clock information synchronization method, characterized in that the method is executed by a terminal, and the method comprises: receiving a master node notification sent by a first node, wherein the master node notification is sent when the first node determines that the terminal is a target terminal; the target terminal is a terminal that serves as a master time-sensitive network TSN clock node among various terminals in a communication system; the first node determines the target terminal according to the following method: determining a terminal that meets the conditions as the target terminal based on at least one of terminal capability information, TSN service information, cell coverage information, terminal mobility information, terminal location information, and terminal identification information according to a preset screening order; The TSN clock information of the terminal is synchronized to other terminals in the communication system except the terminal, so as to realize TSN clock synchronization in a scenario where the target terminal serves as a master TSN clock node. 9. The method according to claim 8, characterized in that synchronizing the TSN clock information of the terminal to other terminals in the communication system except the terminal comprises: Sending the TSN clock information to a base station or a user plane function UPF device, so that the base station or the UPF device sends the TSN clock information to the other terminal; or, The TSN clock information is sent to the other terminal by direct communication. 10. The method according to claim 8, characterized in that the method further comprises: Sending master node indication information to the other terminal, where the master node indication information is used to indicate that the terminal is a terminal serving as a master time-sensitive network TSN clock node. 11. The method according to claim 8, characterized in that synchronizing the TSN clock information of the terminal to other terminals in the communication system except the terminal comprises: Periodically synchronizing the TSN clock information to the other terminals; or, When a specified trigger condition is detected, the TSN clock information is synchronized to the other terminals. 12. A clock information synchronization method, characterized in that the method is performed by a first node, the first node is a terminal side node device in a communication system, and the method comprises: Acquire terminal information of each terminal in the communication system, wherein the terminal information includes at least one of terminal capability information, time-sensitive network (TSN) service information, cell coverage information, terminal mobility information, terminal location information, and terminal identification information; According to the terminal information of each terminal, a target terminal is determined from the terminals, and the target terminal is a terminal that serves as a master TSN clock node. Specifically: a first terminal set that supports high-precision clocks and has the ability to serve as a master TSN clock node is screened out according to the terminal capability information; a second terminal set that supports TSN services and/or whose service characteristics of TSN services meet specified characteristics is screened out from the first terminal set; and a terminal is determined from the second terminal set as the target terminal; Send terminal indication information to the base station, wherein the terminal indication information is used to instruct the base station to send a master node notification to the target terminal, and the master node notification is used to instruct the target terminal to synchronize the TSN clock information to other terminals in the communication system except the target terminal, so as to realize TSN clock synchronization in the scenario where the target terminal serves as the master TSN clock node. 13. The method according to claim 12, wherein when the first node is a designated terminal, the designated terminal is: A first terminal among the terminals that transmits a TSN service; Or, a terminal with a fixed geographical location among the terminals; Or, a terminal indicated by a base station among the terminals; Or, a terminal among the terminals determined by a network-side device other than a base station; Or, a terminal that establishes or supports a specific data radio bearer DRB or a quality of service flow QoS flow among the terminals; Alternatively, a terminal having a designated terminal identifier among the terminals. 14. The method according to claim 12, characterized in that when the first node is a designated terminal group, the designated terminal group is: A terminal group determined by negotiation among the terminals; Or, a terminal group indicated by the base station among the terminals; Alternatively, the terminal group among the terminals is determined by a network side device other than the base station. 15. The method according to claim 12, characterized in that the method further comprises: The terminal indication information is sent to at least one of the central control node CNC, the access and mobility management function AMF device, the session management function SMF device or the user plane function UPF device. 16. The method according to claim 12, wherein the terminal indication information comprises: The terminal identifier of the target terminal, the service cell identifier of the target terminal, the service base station identifier of the target terminal, the TSN clock domain identifier of the target terminal, the DRB identifier for establishing or to establish the transmission of TSN clock information, the QoS flow identifier for establishing or to establish the transmission of TSN clock information, and at least one of the TSN service identifier of the target terminal. 17. The method according to any one of claims 12 to 16, characterized in that the terminal capability information is used to indicate at least one of whether the corresponding terminal supports a high-precision clock and whether the corresponding terminal has the capability of being a master TSN clock node; The TSN service information is used to indicate whether the corresponding terminal supports or will transmit the TSN service, whether the corresponding terminal establishes or supports the establishment of a specific DRB or a quality of service flow QoS flow, and at least one of the service characteristics of the TSN service that the corresponding terminal supports or will transmit; The terminal identification information is used to indicate whether the corresponding terminal has a specified terminal identification. 18. A clock information synchronization method, characterized in that the method is executed by a terminal, and the method comprises: Receive a master node notification sent by a base station; the master node notification is sent by the base station when receiving terminal indication information; the terminal indication information is sent to the base station when the first node determines that the terminal is a target terminal; the target terminal is a terminal that serves as a master time-sensitive network TSN clock node among various terminals in the communication system; the first node determines the target terminal according to the following method: determine a terminal that meets the conditions as the target terminal based on at least one of the terminal capability information, TSN service information, cell coverage information, terminal mobility information, terminal location information and terminal identification information according to a preset screening order; The TSN clock information of the terminal is synchronized to other terminals in the communication system except the terminal, so as to realize TSN clock synchronization in a scenario where the target terminal serves as a master TSN clock node. 19. The method according to claim 18, characterized in that synchronizing the TSN clock information of the terminal to other terminals in the communication system except the terminal comprises: Sending the TSN clock information to the base station or the user plane function UPF device, so that the base station or the UPF device sends the TSN clock information to the other terminal; or, The TSN clock information is sent to the other terminal by direct communication. 20. The method according to claim 18, characterized in that the method further comprises: Sending master node indication information to the other terminal, where the master node indication information is used to indicate that the terminal is a terminal serving as a master time-sensitive network TSN clock node. 21. The method according to claim 18, characterized in that synchronizing the TSN clock information of the terminal to other terminals in the communication system except the terminal comprises: Periodically synchronizing the TSN clock information to the other terminals; or, When a specified trigger condition is detected, the TSN clock information is synchronized to the other terminals. 22. A clock information synchronization device, characterized in that the device is used in a first node, the first node is a node on the network side of a communication system, and the device comprises: A terminal information acquisition module, used to acquire terminal information of each terminal in the communication system, wherein the terminal information includes at least one of terminal capability information, time-sensitive network TSN service information, cell coverage information, terminal mobility information, terminal location information and terminal identification information; The target terminal determination module is used to determine the target terminal from the terminals according to the terminal information of each terminal, and the target terminal is a terminal that serves as a master TSN clock node. Specifically: a first terminal set that supports high-precision clocks and has the ability to serve as a master TSN clock node is screened out according to the terminal capability information; a second terminal set that supports TSN services and/or whose service characteristics of TSN services meet specified characteristics is screened out from the first terminal set; and a terminal is determined from the second terminal set as the target terminal; A notification sending module is used to send a master node notification to the target terminal, wherein the master node notification is used to instruct the target terminal to synchronize TSN clock information to other terminals in the communication system except the target terminal. 23. The device according to claim 22 is characterized in that the first node is a base station, a central control node CNC, an access and mobility management function AMF device, a session management function SMF device or a user plane function UPF device. 24. The device according to claim 23, characterized in that The notification sending module is used to send terminal indication information to the base station when the first node is a CNC, an AMF device, an SMF device or a UPF device, and the terminal indication information is used to instruct the base station to send the master node notification to the target terminal. 25. The device according to claim 24, wherein the terminal indication information comprises: The terminal identifier of the target terminal, the service cell identifier of the target terminal, the service base station identifier of the target terminal, the TSN clock domain identifier of the target terminal, the data radio bearer DRB identifier that establishes or will establish the transmission of TSN clock information, the service quality flow QoS flow identifier that establishes or will establish the transmission of TSN clock information, and at least one of the TSN service identifier of the target terminal. 26. The device according to claim 23, characterized in that the device further comprises: A clock information receiving module, used for receiving the TSN clock information sent by the target terminal when the first node is a base station or a UPF device; The clock information sending module is used to send the TSN clock information to other terminals in the communication system except the target terminal. 27. The device according to claim 26, characterized in that the clock information receiving module is used to: Receiving the TSN clock information periodically sent by the target terminal; or, The TSN clock information sent by the target terminal when a specified trigger condition is detected is received. 28. The device according to any one of claims 22 to 27, characterized in that the terminal capability information is used to indicate at least one of whether the corresponding terminal supports a high-precision clock and whether the corresponding terminal has the capability of being a master TSN clock node; The TSN service information is used to indicate whether the corresponding terminal supports or will transmit the TSN service, whether the corresponding terminal establishes or supports the establishment of a specific DRB or a quality of service flow QoS flow, and at least one of the service characteristics of the TSN service that the corresponding terminal supports or will transmit; The terminal identification information is used to indicate whether the corresponding terminal has a specified terminal identification. 29. A clock information synchronization device, characterized in that the device is used in a terminal, and the device comprises: A notification receiving module, configured to receive a master node notification sent by a first node, wherein the master node notification is sent when the first node determines that the terminal is a target terminal; the target terminal is a terminal that serves as a master time-sensitive network TSN clock node among various terminals in a communication system; the first node determines the target terminal according to the following method: determining a terminal that meets the conditions as the target terminal based on at least one of terminal capability information, TSN service information, cell coverage information, terminal mobility information, terminal location information, and terminal identification information according to a preset screening order; The clock information synchronization module is used to synchronize the TSN clock information of the terminal to other terminals in the communication system except the terminal, so as to realize TSN clock synchronization in the scenario where the target terminal serves as the main TSN clock node. 30. The device according to claim 29, characterized in that the clock information synchronization module is used to: Sending the TSN clock information to a base station or a user plane function UPF device, so that the base station or the UPF device sends the TSN clock information to the other terminal; or, The TSN clock information is sent to the other terminal by direct communication. 31. The device according to claim 29, characterized in that the device further comprises: The master node indication module is used to send master node indication information to the other terminals, where the master node indication information is used to indicate that the terminal is a terminal serving as a master time-sensitive network TSN clock node. 32. The device according to claim 29, characterized in that the clock information synchronization module is used to: Periodically synchronizing the TSN clock information to the other terminals; or, When a specified trigger condition is detected, the TSN clock information is synchronized to the other terminals. 33. A clock information synchronization device, characterized in that the device is used in a first node, the first node is a terminal side node device in a communication system, and the device comprises: A terminal information acquisition module, used to acquire terminal information of each terminal in the communication system, wherein the terminal information includes at least one of terminal capability information, time-sensitive network TSN service information, cell coverage information, terminal mobility information, terminal location information and terminal identification information; The target terminal determination module is used to determine the target terminal from the terminals according to the terminal information of each terminal, and the target terminal is a terminal that serves as a master TSN clock node. Specifically: a first terminal set that supports high-precision clocks and has the ability to serve as a master TSN clock node is screened out according to the terminal capability information; a second terminal set that supports TSN services and/or whose service characteristics of TSN services meet specified characteristics is screened out from the first terminal set; and a terminal is determined from the second terminal set as the target terminal; An indication information sending module is used to send terminal indication information to a base station, wherein the terminal indication information is used to instruct the base station to send a master node notification to the target terminal, and the master node notification is used to instruct the target terminal to synchronize TSN clock information to other terminals in the communication system except the target terminal, so as to realize TSN clock synchronization in a scenario where the target terminal serves as a master TSN clock node. 34. The apparatus according to claim 33, wherein when the first node is a designated terminal, the designated terminal is: A first terminal among the terminals that transmits a TSN service; Or, a terminal with a fixed geographical location among the terminals; Or, a terminal indicated by a base station among the terminals; Or, a terminal among the terminals determined by a network-side device other than a base station; Or, a terminal that establishes or supports a specific data radio bearer DRB or a quality of service flow QoS flow among the terminals; Alternatively, a terminal having a designated terminal identifier among the terminals. 35. The device according to claim 33, characterized in that when the first node is a designated terminal group, the designated terminal group is: A terminal group determined by negotiation among the terminals; Or, a terminal group indicated by the base station among the terminals; Alternatively, the terminal group among the terminals is determined by a network side device other than the base station. 36. The device according to claim 33, characterized in that the indication information sending module is further used to: The terminal indication information is sent to at least one of the central control node CNC, the access and mobility management function AMF device, the session management function SMF device or the user plane function UPF device. 37. The device according to claim 33, wherein the terminal indication information comprises: The terminal identifier of the target terminal, the service cell identifier of the target terminal, the service base station identifier of the target terminal, the TSN clock domain identifier of the target terminal, the DRB identifier for establishing or to establish the transmission of TSN clock information, the QoS flow identifier for establishing or to establish the transmission of TSN clock information, and at least one of the TSN service identifier of the target terminal. 38. The device according to any one of claims 33 to 37, characterized in that the terminal capability information is used to indicate at least one of whether the corresponding terminal supports a high-precision clock and whether the corresponding terminal has the capability of being a master TSN clock node; The TSN service information is used to indicate whether the corresponding terminal supports or will transmit the TSN service, whether the corresponding terminal establishes or supports the establishment of a specific DRB or QoS flow, and at least one of the service characteristics of the TSN service that the corresponding terminal supports or will transmit; The terminal identification information is used to indicate whether the corresponding terminal has a specified terminal identification. 39. A clock information synchronization device, characterized in that the device is used in a terminal, and the device comprises: A notification receiving module, configured to receive a master node notification sent by a base station; the master node notification is sent by the base station when receiving terminal indication information; the terminal indication information is sent to the base station when the first node determines that the terminal is a target terminal; the target terminal is a terminal that serves as a master time-sensitive network TSN clock node among various terminals in the communication system; the first node determines the target terminal according to the following method: determining a terminal that meets the conditions as the target terminal based on at least one of terminal capability information, TSN service information, cell coverage information, terminal mobility information, terminal location information, and terminal identification information according to a preset screening order; The clock information synchronization module is used to synchronize the TSN clock information of the terminal to other terminals in the communication system except the terminal, so as to realize TSN clock synchronization in the scenario where the target terminal serves as the main TSN clock node. 40. The device according to claim 39, characterized in that the clock information synchronization module is used to: Sending the TSN clock information to the base station or the user plane function UPF device, so that the base station or the UPF device sends the TSN clock information to the other terminal; or, The TSN clock information is sent to the other terminal by direct communication. 41. The device according to claim 39, characterized in that the device further comprises: The master node indication module is used to send master node indication information to the other terminals, where the master node indication information is used to indicate that the terminal is a terminal serving as a master time-sensitive network TSN clock node. 42. The device according to claim 39, characterized in that the clock information synchronization module is used to: Periodically synchronizing the TSN clock information to the other terminals; or, When a specified trigger condition is detected, the TSN clock information is synchronized to the other terminals. 43. A first node, characterized in that the first node is a network-side node device in a communication system, and the first node includes a processor, a memory, and a transceiver; The processor is used to obtain terminal information of each terminal in the communication system, wherein the terminal information includes at least one of terminal capability information, time-sensitive network TSN service information, cell coverage information, terminal mobility information, terminal location information, and terminal identification information; The processor is configured to determine a target terminal from the terminals according to the respective terminal information of the terminals, wherein the target terminal is a terminal serving as a master TSN clock node, specifically: screening out a first terminal set supporting a high-precision clock and having the capability of serving as a master TSN clock node according to the terminal capability information; screening out a second terminal set supporting TSN services and/or whose service characteristics of TSN services meet specified characteristics from the first terminal set; and determining a terminal from the second terminal set as the target terminal; The transceiver is used to send a master node notification to the target terminal, and the master node notification is used to instruct the target terminal to synchronize TSN clock information to other terminals in the communication system except the target terminal, so as to realize TSN clock synchronization in the scenario where the target terminal serves as the master TSN clock node. 44. A terminal, characterized in that the terminal comprises a processor, a memory and a transceiver; The transceiver is used to receive a master node notification sent by the first node, wherein the master node notification is sent when the first node determines that the terminal is a target terminal; the target terminal is a terminal that serves as a master time-sensitive network TSN clock node among various terminals in the communication system; the first node determines the target terminal according to the following method: determining a terminal that meets the conditions as the target terminal based on at least one of terminal capability information, TSN service information, cell coverage information, terminal mobility information, terminal location information, and terminal identification information according to a preset screening order; The transceiver is further used to synchronize the TSN clock information of the terminal to other terminals in the communication system except the terminal, so as to realize TSN clock synchronization in a scenario where the target terminal serves as a master TSN clock node. 45. A first node, characterized in that the first node is a terminal side node device in a communication system, and the first node includes a processor, a memory and a transceiver; The processor is used to obtain terminal information of each terminal in the communication system, where the terminal information includes at least one of terminal capability information, time-sensitive network TSN service information, cell coverage information, terminal mobility information, terminal location information, and terminal identification information; The processor is configured to determine a target terminal from the terminals according to the respective terminal information of the terminals, wherein the target terminal is a terminal serving as a master TSN clock node, specifically: screening out a first terminal set supporting a high-precision clock and having the capability of serving as a master TSN clock node according to the terminal capability information; screening out a second terminal set supporting TSN services and/or whose service characteristics of TSN services meet specified characteristics from the first terminal set; and determining a terminal from the second terminal set as the target terminal; The transceiver is used to send terminal indication information to the base station, and the terminal indication information is used to instruct the base station to send a master node notification to the target terminal, and the master node notification is used to instruct the target terminal to synchronize TSN clock information to other terminals in the communication system except the target terminal, so as to realize TSN clock synchronization in the scenario where the target terminal serves as the master TSN clock node. 46. A terminal, characterized in that the terminal comprises a processor, a memory and a transceiver; The transceiver is used to receive a master node notification sent by a base station; the master node notification is sent by the base station when receiving terminal indication information; the terminal indication information is sent to the base station when the first node determines that the terminal is a target terminal; the target terminal is a terminal that serves as a master time-sensitive network TSN clock node among various terminals in the communication system; the first node determines the target terminal according to the following method: determining a terminal that meets the conditions as the target terminal based on at least one of terminal capability information, TSN service information, cell coverage information, terminal mobility information, terminal location information and terminal identification information according to a preset screening order; The transceiver is further used to synchronize the TSN clock information of the terminal to other terminals in the communication system except the terminal, so as to realize TSN clock synchronization in a scenario where the target terminal serves as a master TSN clock node. 47. A computer-readable storage medium, characterized in that a computer program is stored in the storage medium, and the computer program is used to be executed by a processor to implement the clock information synchronization method as described in any one of claims 1 to 21.