CN114731266B

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

Info

Publication number: CN114731266B
Application number: CN202080080265.0A
Authority: CN
Inventors: 付喆
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-02-14
Filing date: 2020-02-14
Publication date: 2024-05-28
Anticipated expiration: 2040-02-14
Also published as: WO2021159508A1; CN114731266A

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 and device, first node, terminal and storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a clock information synchronization method and apparatus, a first node, a terminal, and a storage medium.

Background

In the industrial internet (Industrial Internet of Things, IIOT), the concept of time sensitive networks (TIME SENSITIVE networks, TSNs) networks was introduced based on latency and reliability transmission requirements.

In the related art, a network is generally used as a primary TSN clock node (MASTER TSN clock node), a UE is used as a secondary TSN clock node (slave TSN clock node), and a network side (such as a base station) provides information for synchronizing with a terminal.

However, the TSN clock synchronization scheme in the related art only supports a scenario in which the network is used as a primary TSN clock node and the UE is used as a secondary TSN clock node, resulting in a narrower application scenario for TSN clock synchronization.

Disclosure of Invention

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

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

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.

In another aspect, an embodiment of the present application provides a clock information synchronization method, where the method is performed by a terminal, and the method includes:

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 serving as a TSN clock node of a main time sensitive network in each terminal in a communication system;

and synchronizing the TSN clock information of the terminal to other terminals except the terminal in the communication system.

In another aspect, an embodiment of the present application provides a clock information synchronization method, where the method is performed by a first node, where 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;

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

Receiving a main node notification sent by a base station; the main node notification is sent when the base station receives 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 serving as a TSN clock node of a main time sensitive network in each terminal in a communication system;

In still another aspect, an embodiment of the present application provides a clock information synchronization apparatus, where the apparatus is used in a first node, and the first node is a node on a network side in a communication system, and the apparatus includes:

a terminal information acquisition module, configured to acquire terminal information of each terminal in the communication system;

The target terminal determining module is used for 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 the main time sensitive network;

and the notification sending module is used for 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.

In still another aspect, an embodiment of the present application provides a clock information synchronization apparatus, which is used in a terminal, and includes:

The notification receiving module is used for receiving a main node notification sent by a first node, wherein the main node notification is sent when the first node determines that the terminal is a target terminal; the target terminal is a terminal serving as a TSN clock node of a main time sensitive network in each terminal in a communication system;

And the clock information synchronization module is used for synchronizing the TSN clock information of the terminal to other terminals except the terminal in the communication system.

In still another aspect, an embodiment of the present application provides a clock information synchronization apparatus, where the apparatus is used in a first node, and the first node is a terminal side node device in a communication system, and the apparatus includes:

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

In still another aspect, an embodiment of the present application provides a clock information synchronization apparatus, where the apparatus is used in a terminal, and the apparatus includes:

the notification receiving module is used for receiving a main node notification sent by the base station; the main node notification is sent when the base station receives 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 serving as a TSN clock node of a main time sensitive network in each terminal in a communication system;

In yet another aspect, an embodiment of the present application provides a terminal, where the terminal includes a processor, a memory, and a transceiver, where the memory stores a computer program, and the computer program is configured to be executed by the processor to implement the clock information synchronization method described above.

In yet another aspect, an embodiment of the present application provides a first node, where the first node includes a processor, a memory, and a transceiver, where the memory stores a computer program, and the computer program is configured to be executed by the processor to implement the clock information synchronization method described above.

In yet another aspect, an embodiment of the present application further provides a computer readable storage medium having a computer program stored therein, the computer program being loaded and executed by a processor to implement the above-described clock information synchronization method.

In yet another aspect, the present application provides a computer program product for causing a terminal to perform the above-described clock information synchronization method when the computer program product is run on the terminal.

The technical scheme provided by the embodiment of the application can bring the following beneficial effects:

When determining each terminal or a specific terminal in the communication system according to the terminal information of each terminal, the first node sends a master node notification to the target terminal when the target terminal is used as a master time sensitive network TSN clock node, so as to trigger the target terminal to synchronize the TSN clock information to other terminals or other related terminals except the target terminal in the communication system, thereby realizing TSN clock synchronization under the scene that the terminal is used as the master TSN clock node.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a network architecture provided by one embodiment of the present application;

FIG. 2 is a flow chart of a method for synchronizing clock information provided by one embodiment of the present application;

FIG. 3 is a flow chart of a method for synchronizing clock information provided by one embodiment of the present application;

FIG. 4 is a flow chart of a method for synchronizing clock information provided by one embodiment of the present application;

FIG. 5 is a flow chart of a method for synchronizing clock information provided by one embodiment of the present application;

FIG. 6 is a flow chart of a method for synchronizing clock information provided by one embodiment of the present application;

FIG. 7 is a flow chart of a method for synchronizing clock information provided by one embodiment of the present application;

FIG. 8 is a block diagram of a clock information synchronization apparatus provided by one embodiment of the present application;

FIG. 9 is a block diagram of a clock information synchronization apparatus provided by one embodiment of the present application;

FIG. 10 is a block diagram of a clock information synchronization apparatus provided by one embodiment of the present application;

FIG. 11 is a block diagram of a clock information synchronization apparatus provided by one embodiment of the present application;

fig. 12 is a schematic structural diagram of a terminal according to an embodiment of the present application;

FIG. 13 is a schematic diagram of a first node according to an embodiment of the present application;

fig. 14 is a schematic structural view of a terminal according to an embodiment of the present application;

fig. 15 is a schematic structural diagram of a first node according to an embodiment of the present application.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.

The network architecture and the service scenario described in the embodiments of the present application are for more clearly describing the technical solution of the embodiments of the present application, and do not constitute a limitation on the technical solution provided by the embodiments of the present application, and those skilled in the art can know that, with the evolution of the network architecture and the appearance of the new service scenario, the technical solution provided by the embodiments of the present application is applicable to similar technical problems.

Referring to fig. 1, a schematic diagram of a network architecture of a communication system according to an embodiment of the application is shown. The network architecture may include: a terminal 10 and a base station 20.

The number of terminals 10 is typically plural and one or more terminals 10 may be distributed within the cell managed by each base station 20. The terminal 10 can include various handheld devices, vehicle mount devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, as well as various forms of User Equipment (UE), mobile Station (MS), terminal devices (TERMINAL DEVICE), and the like, having wireless communication capabilities. For convenience of description, in the embodiment of the present application, the above-mentioned devices are collectively referred to as a terminal.

Base station 20 is a device deployed in an access network to provide wireless communication functionality for terminal 10. The base stations 20 may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. The names of base station enabled devices may vary in systems employing different radio access technologies, for example in 5G NR systems, referred to as gNodeB or gNB. As communication technology evolves, the name "base station" may change. For convenience of description, the above-described devices for providing the wireless communication function to the terminal 10 are collectively referred to as a base station in the embodiments of the present application.

Optionally, not shown in fig. 1, the network architecture further includes other network devices, such as: a central control node (Central network control, CNC), an access and mobility management function (ACCESS AND Mobility Management Function, AMF) device, a session management function (Session management function, SMF) or a user plane function (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 a person skilled in the art may understand the meaning thereof. The technical scheme described in the embodiment of the disclosure can be applied to a 5G NR system and also can be applied to a subsequent evolution system of the 5G NR system.

The requirements in R16 5G IIoT support industrial automation (Factory automation), transmission automation (Transport Industry), intelligent power (ELECTRICAL POWER DISTRIBUTION) and other services in the 5G system. Among the TSN networks, the 5C network serves as a TSN bridge (TSN bridge) for the TSN network and traffic. In this regard, NR systems need to provide lower latency guarantees and higher clock synchronization accuracy so that the operation and succession of each point of mechanical operation is accurate and time-critical when industrial automation traffic is transmitted in a 5G network.

The R16 mainly supports a scene of taking a network as MASTER TSN clock node and taking the UE as slave TSN clock node, and corresponding TSN clock information is notified to the UE from a base station, and the UE and the base station are synchronized.

Based on this assumption, and based on the requirement of TSN traffic transmission, when TSN traffic is transmitted in 5G, synchronization between UE and base station is required, and the corresponding base station provides reference time information to UE, so that UE and base station are synchronized. Further, to achieve a time accuracy of 1us, the network informs the TSN of time synchronization information and more accurate time synchronization accuracy information, the reference clock information being contained in TimeReferenceInfo IE. The time synchronization accuracy may be granularity of 10ns, which may be sent to the UE by broadcast or unicast.

The R16 mainly supports a scene of taking a network as MASTER TSN clock node and taking the UE as slave TSN clock node, and the network provides information for the UE to synchronize with. While at R17 it is necessary to support the UE as a MASTER TSN clock node scenario. Since there are multiple UEs in the serving cell, and different UEs have different clock accuracies, different clock local oscillators, different equipment errors, etc., it will result in that which UE is selected as mater TSN clock node is a thing that needs to be determined, otherwise, the problem of unsynchronized TSN of the system will be caused, or the problem of insufficient synchronization accuracy will be caused.

The subsequent embodiment of the application provides a clock synchronization scheme under the scene of supporting the UE as MASTER TSN clock node, thereby expanding the application scene of TSN clock synchronization.

In the following, the technical solution of the present application will be described in connection with several exemplary embodiments.

Referring to fig. 2, a flowchart of a clock information synchronization method according to an embodiment of the present application is shown, where the method may be applied to a first node in a communication system corresponding to the network architecture shown in fig. 1, where the first node is a network side node device in the communication system, and the method may include the following steps:

In step 201, terminal information of each terminal in the communication system is acquired.

And 202, 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 in each terminal or specific terminals in a communication system.

Alternatively, each terminal may be all terminals in a cell served by a base station.

Alternatively, each of the above terminals may be part of terminals in a cell served by a base station, for example, terminals supporting TSN services, for example, terminals supporting certain designated TSN services.

Alternatively, the target terminal may be determined by the base station in each terminal, or the target terminal may be notified to the base station after being determined by a node determining device other than the base station in each terminal.

Alternatively, the target terminal may be determined by the base station in at least one specific terminal, or the target terminal may be notified to the base station after being determined in at least one specific terminal by a node determining device other than the base station.

And step 203, sending a main node notification to the target terminal.

Wherein the master node notification is for instructing the target terminal to synchronize the TSN clock information to other terminals in the communication system than the target terminal.

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

Optionally, the base station may send the master node notification to the other terminals except the target terminal in the communication system, in addition to sending the master node notification to the target terminal; or the base station may send the master node notification to the target terminal, or may send the master node notification to terminals other than the target terminal among terminals corresponding to TSN services supported by the master node in the communication system.

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

The TSN clock information may also be referred to as TSN reference clock information, and is information for performing clock synchronization between the terminals.

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

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

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

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

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

In the embodiment of the application, after receiving the TSN clock information sent by the target terminal, the base station/UPF equipment can send the TSN clock information to other terminals except the target terminal or other related terminals except the target terminal, which correspond to the TSN of the TSN clock information, so that clock synchronization is carried out between the other terminals and the base station and between the other terminals and the target terminal.

In summary, according to the scheme shown in the embodiment of the present application, when the first node determines each terminal or a specific terminal in the communication system according to the terminal information of each terminal, the first node sends a master node notification to the target terminal when the first node is the target terminal of the TSN clock node of the master time-sensitive network, so as 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 implementing TSN clock synchronization under the scenario that the terminal is the master TSN clock node.

Referring to fig. 3, a flowchart of a clock information synchronization method according to an embodiment of the present application is shown, where the method may be applied to a terminal of the network architecture shown in fig. 1, and 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 of a master time sensitive network TSN clock node among the terminals in the communication system.

Step 302, the TSN clock information of the terminal is synchronized to other terminals in the communication system than the terminal.

In summary, in the solution shown in the embodiment of the present application, when determining each terminal or each specific terminal in the communication system, the first node sends a master node notification to the target terminal when determining the target terminal of the TSN clock node of the master time-sensitive network, and the target terminal synchronizes the TSN clock information of the terminal to other terminals or other related terminals in the communication system except for the target terminal in response to receiving the master node notification, thereby implementing TSN clock synchronization under the scenario that the terminal is used as the master TSN clock node.

Referring to fig. 4, a flowchart of a clock information synchronization method according to an embodiment of the present application is shown, where the method may be applied to a first node in a communication system corresponding to the network architecture shown in fig. 1, and the first node is a terminal side node device in the communication system, and the method may include the following steps:

step 401, acquiring terminal information of each terminal in the communication system.

And step 402, 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 the main time sensitive network.

Step 403, sending 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, 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.

Referring to fig. 5, a flowchart of a clock information synchronization method according to an embodiment of the present application is shown, where the method may be applied to a terminal of the network architecture shown in fig. 1, and the method may include the following steps:

Step 501, receiving a main node notification sent by a base station; the main node notification is sent when the base station receives 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 of a master time sensitive network TSN clock node among the terminals in the communication system.

Step 502, the TSN clock information of the terminal is synchronized to other terminals except the terminal in the communication system.

In the solutions shown in the embodiments of the present application, the target terminal may be determined by a network side node device including the base station, or may be determined by a terminal side node device in the system. The following embodiments of the present application will be described by taking these two cases as examples, respectively.

Referring to fig. 6, a flowchart of a clock information synchronization method according to an embodiment of the present application is shown, where the method may be applied to the network architecture shown in fig. 1, and the method is performed interactively by a first node and a terminal in fig. 1, where the first node is a network node device, and the method may include the following steps:

in step 601, a first node obtains terminal information of each terminal in a communication system.

Alternatively, 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.

Alternatively, the terminal information may be obtained from a base station, a TSN device, a core network, a CNC, or each terminal.

In step 602, the first node determines a target terminal according to terminal information of each terminal, where the target terminal is each terminal or a specific terminal in the communication system, and the terminal is used as a master time sensitive network TSN clock node.

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

the terminal capability information is used for indicating whether the corresponding terminal supports a high-precision clock and whether the corresponding terminal has at least one of the capabilities as 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 a specific DRB/QoS flow is or can be established, and whether the corresponding terminal supports or will transmit the service feature of the TSN service, and whether the corresponding terminal has at least one of the target terminal identifiers.

The terminal identification information is used for indicating whether the corresponding terminal has a specified terminal identification.

For example, the first node may determine, as the target terminal, a terminal that meets the condition through any one of the above-described terminal capability information, TSN service information, cell coverage information, terminal movement information, terminal location information, and terminal identification information.

For example, the first node may select, as the target terminal, one of terminals that support a high-precision clock and that have the capability of being the master TSN clock node, based on the terminal capability information of each terminal.

Or the first node may also screen out a terminal supporting the TSN service according to the TSN service information of each terminal, and/or, one of the terminals whose service characteristics of the TSN service conform to the specified characteristics is used as the target terminal.

Or the first node may screen out one of the terminals belonging to the specified cell as the target terminal according to the cell coverage information of each terminal.

Or the first node may screen out any one of the terminals with fixed positions or slower moving speeds as the target terminal according to the terminal moving information of each terminal.

Or the first node may also screen, as the target terminal, one of the terminals located in a certain fixed geographic range according to the terminal location information of each terminal.

Or the first node can also screen out the terminal with the appointed terminal identification as the target terminal according to the terminal identification information of each terminal.

When the terminal information includes two or more kinds of information, the first node may also perform screening of the target terminal according to the two or more kinds of information sequentially according to a preset screening order.

Taking the terminal information including the terminal capability information and the TSN service information as an example, the first node may first screen out a first terminal set supporting the high-precision clock and having the capability of serving as a master TSN clock node according to the terminal capability information, then screen out a second terminal set supporting the TSN service from the first terminal set, and/or, the service characteristics of the TSN service conform to the specified characteristics, and then determine a terminal from the second terminal set as a 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.

In step 603, the first node sends a master node notification to the target terminal, and correspondingly, the target terminal receives the master node notification.

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

Alternatively, the base station may also be notified to the target terminal by a Non-Access Stratum (NAS) message or the like, by the Non-Access Stratum (such as AMF).

Alternatively, the first node may send the master node notification to all terminals under the base station or the serving cell, or the first node may send the master node notification to terminals performing/supporting TSN services.

Alternatively, when the first node is CNC, AMF, SMF or a 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 method comprises the steps of setting up or setting up at least one of a terminal identifier of the target terminal, a service cell identifier of the target terminal, a service base station identifier of the target terminal, a TSN clock domain identifier of the target terminal, a DRB identifier for transmitting TSN clock information, a QoS flow identifier for transmitting TSN clock information and a TSN service identifier of the target terminal.

In step 604, the target terminal generates TSN clock information.

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

Optionally, the TSN clock information further includes: delay compensation indication information for indicating whether propagation delay is compensated.

Optionally, the TSN clock information may include at least one of TSN time (e.g., arrival time, departure time, etc.), TSN clock domain identification, and TSN type.

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

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

In step 605, the target terminal synchronizes the terminal information to other terminals in the communication system than the target terminal. Accordingly, other terminals receive the TSN clock information.

In one 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.

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

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

Alternatively, the target terminal may synchronize the TSN clock information to the other terminal when the specified trigger condition is detected.

Optionally, the TSN clock information includes: at least one of a reference time, inaccuracy, reference system frame number REFERENCE SFN, time information Type time info Type, and TSN clock domain identification.

Optionally, the TSN clock information further includes: delay compensation indication information for indicating whether propagation delay is compensated. Optionally, after receiving the notification of the master node sent by the base station, the target terminal determines that the target terminal is selected as MASTER TSN clock node, and then the target terminal sends TSN clock information to the base station. Alternatively, the TSN clock information sent for the first time may be carried in a dedicated RRC message.

After the target terminal sends the TSN clock information for the first time, the target terminal can also synchronously update the TSN clock information to other terminals according to a certain period. Alternatively, the updated TSN clock information may be carried in any one of a dedicated RRC message, MAC CE, or physical layer signaling when the TSN clock information is synchronized by other terminals through the base station hour.

Alternatively, the TSN clock information may include at least one of TSN time (e.g., arrival time, departure time, etc.), TSN clock domain identification, and TSN type.

The target terminal establishes or utilizes the established specific DRB or specific QoS flow to support the target terminal to send TSN clock information to the base station. And 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 be triggered by an event, for example, the TSN clock information arrives, or the TSN clock information is updated, or the TSN clock information changes the event, or the TSN clock information changes the granularity to be greater than or equal to the 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 transmits the TSN clock information to other terminals in the communication system than the target terminal. Accordingly, 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 alternatively

When the first node is a base station, the first node may receive TSN clock information transmitted by the target terminal upon detection of a specified trigger condition.

Alternatively, the first node may notify the TSN clock information to other terminals in the communication system than the target terminal through a broadcast (e.g., SIB 9) of the base station and/or a dedicated RRC message. Accordingly, other terminals may receive the TSN clock information through a broadcast (e.g., SIB 9) 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, the base station further performs TSN clock synchronization with the target terminal according to the TSN clock information after receiving the TSN clock information.

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

In another possible implementation manner, when the target terminal sends the TSN clock information to the UPF device and the UPF device sends the TSN clock information to the other terminal, the UPF may directly send the TSN clock information sent by the target terminal to the other terminal, or the UPF may send the TSN clock information sent by the target terminal to the other terminal after correcting the TSN clock information.

In step 606, the other terminals perform clock synchronization with the target terminal according to the TSN clock information.

In the embodiment of the present application, if the terminal is not selected as 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 base station/UPF device. The clock information sent by the base station/UPF device may be carried in at least one of the following information: broadcast (e.g., SIB 9), dedicated RRC message, dedicated DRB or specific QoS flow.

In addition, in the embodiment of the application, the network side node equipment determines the scheme of the target terminal serving as MASTER TSN clock node, and the network side can determine and select a proper terminal with more information, so that the requirement that the 5G system is controlled by the network is ensured, and the requirements of system TSN synchronization and synchronization precision are simultaneously ensured.

The first node may be a terminal-side node device in the communication system, that is, the target terminal may be determined by a specified terminal or a specified terminal group in each terminal.

Referring to fig. 7, a flowchart of a clock information synchronization method according to an embodiment of the present application is shown, where the method may be applied to the network architecture shown in fig. 1, and the method is performed interactively by a first node and a terminal in fig. 1, where the first node is a terminal side node device, and the first node is a designated terminal or a designated terminal group in each terminal in a communication system, and the method may include the following steps:

In step 701, a first node obtains terminal information of each terminal in a communication system.

When the scheme shown in the embodiment of the present application is executed by the designated terminal, that is, the first node is the designated terminal, the designated terminal may be: the first terminal for transmitting TSN business in the above terminals; or a terminal with a fixed geographic position in the terminals; or a terminal indicated by the base station among the respective terminals; or the terminals determined by network side equipment outside the base station in the terminals; or terminals which establish or support specific DRB or QoS flow in each terminal; or terminals with a specified terminal identification in each terminal.

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

The network side device outside the base station may be a CNC, an AMF device, or an SMF device, etc.

In step 702, the first node determines, from each terminal, a target terminal according to terminal information of each terminal.

Wherein the target terminal is a terminal of a TSN clock node of the master time sensitive network among the 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 for indicating the base station to send a master node notification to the target terminal, and the master node notification is used for indicating the target terminal to synchronize TSN clock information to other terminals except the target terminal in the communication system.

The manner in which the designated terminal or the designated terminal group determines the target terminal is similar to the manner in which the network side node device determines the target terminal in the embodiment shown in fig. 6, that is, the target terminal is determined from the terminals according to the terminal information of each terminal, which is not described herein.

The terminal information of each terminal can be obtained from the base station, the core network, the CNC or other terminals except the specified terminal or the specified terminal group by the specified terminal or the specified terminal group.

The terminal indication information comprises:

At least one of a terminal identifier of the target terminal, a serving cell identifier of the target terminal, a serving base station identifier of the target terminal, a TSN clock domain identifier of the target terminal, a DRB identifier for establishing or to be established for transmitting TSN clock information, a QoS flow identifier for establishing or to be established for transmitting TSN clock information, and a TSN service identifier of the target terminal.

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

In step 704, the base station sends a master node notification to the related device, and the related device receives the master node notification.

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

Alternatively, the base station may also be notified to the target terminal by a non-access stratum (such as AMF) through a NAS message or the like.

Alternatively, the base station may send the master node notification to all terminals under the base station or the serving cell, or the base station may send the master node notification to terminals performing/supporting TSN services.

Optionally, the base station may further send the terminal indication information to at least one of a CNC, an AMF device, an SMF device, or a UPF device.

Step 705, the target terminal generates TSN clock information.

In step 706, the target terminal synchronizes the TSN clock information to other terminals in the communication system than the target terminal.

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

Or alternatively

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

For example, taking the example that the target terminal synchronizes the TSN clock information to other terminals through the base station, the target terminal sends the TSN clock information to the base station, and correspondingly, the base station receives the TSN clock information sent by the target terminal. And then, the base station transmits the TSN clock information to other terminals except the target terminal in the communication system, and the other terminals correspondingly 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, after receiving the notification of the master node sent by the base station, the target terminal determines that the target terminal is selected as MASTER TSN clock node, and then the target terminal sends TSN clock information to the base station. Alternatively, the TSN clock information sent for the first time may be carried in a dedicated RRC message.

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

The target terminal establishes or utilizes the established specific DRB or specific QoS flow to support the target terminal to send TSN clock information to the base station. And sending the first or subsequent TSN information to the network by utilizing the DRB or QoS flow.

Optionally, in the embodiment of the present application, the target terminal may also send, to other terminals in the respective terminals, main node indication information, where the main node indication information is used to indicate that the terminal is a terminal that is a TSN clock node of the main time sensitive network.

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

Alternatively, when the target terminal is not a specified terminal or does not belong to a specified terminal group, the other terminal may include the specified terminal or the specified terminal group.

Alternatively, the base station may notify the TSN clock information to other terminals in the communication system than the target terminal through broadcasting (e.g., SIB 9) and/or a dedicated RRC message. Accordingly, other terminals may receive the TSN clock information through a broadcast (e.g., SIB 9) and/or a dedicated RRC message.

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

In another possible implementation manner, the above TSN clock information may also be directly sent to other terminals by the target terminal. For example, the target terminal may send the TSN clock information to other terminals in a direct communication sidelink manner.

In another possible implementation manner, the target terminal may also send the TSN clock information to the UPF device, and the UPF device sends the TSN clock information to the other terminals. Correspondingly, the UPF may directly send the TSN clock information sent by the target terminal to the other terminals, or the UPF may send the TSN clock information sent by the target terminal to the other terminals after correcting the TSN clock information.

In step 707, the other terminal performs clock synchronization with the target terminal according to the TSN clock information.

In the embodiment of the present application, if the terminal is not selected as 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 may be carried in at least one of the following information: broadcast (e.g., SIB 9), dedicated RRC message, dedicated DRB or specific QoS flow.

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

The following are examples of the apparatus of the present application that may be used to perform the method embodiments of the present application. For details not disclosed in the embodiments of the apparatus of the present application, please refer to the embodiments of the method of the present application.

Referring to fig. 8, a block diagram of a clock information synchronization apparatus according to an embodiment of the application is shown. The device has the function of realizing the clock information synchronization method example, and the function can be realized by hardware or can be realized by executing corresponding software by hardware. The device may be the first node described above, or may be provided in the first node; the first node may be a network side node device. As shown in fig. 8, the apparatus may include:

a terminal information acquisition module 801, configured to acquire terminal information of each terminal in the communication system;

a target terminal determining module 802, configured to determine a target terminal from the terminals according to respective terminal information of the terminals, where the target terminal is a terminal serving as a TSN clock node of the master time sensitive network;

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

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 configured to send terminal indication information to a base station when the first node is a CNC, AMF device, SMF device or UPF device, where 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 method comprises the steps of setting up or setting up at least one of a terminal identifier of a target terminal, a service cell identifier of the target terminal, a service base station identifier of the target terminal, a TSN clock domain identifier of the target terminal, a DRB identifier for transmitting TSN clock information, a QoS flow identifier for transmitting TSN clock information and a TSN service identifier of the target terminal.

Optionally, the apparatus further includes:

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

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

Optionally, the clock information receiving module is configured to,

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

Or alternatively

And receiving the TSN clock information sent by the target terminal when the specified trigger condition is detected.

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

The terminal capability information is used for indicating whether the corresponding terminal supports a high-precision clock or not, and whether the corresponding terminal has at least one of the capabilities as a master TSN clock node or not;

The TSN service information is used for indicating whether the corresponding terminal supports or will transmit TSN service, whether the corresponding terminal establishes or supports establishing specific DRB or QoS flow, and the corresponding terminal supports or will transmit at least one of the service characteristics of the TSN service;

Referring to fig. 9, a block diagram of a clock information synchronization apparatus according to an embodiment of the application is shown. The device has the function of realizing the clock information synchronization method example, and the function can be realized by hardware or can be realized by executing corresponding software by hardware. The device may be the terminal described above or may be provided in the terminal. As shown in fig. 9, the apparatus may include:

A notification receiving module 901, configured to receive 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 serving as a TSN clock node of a main time sensitive network in each terminal in a communication system;

A clock information synchronization module 902, configured to synchronize TSN clock information of the terminal to other terminals in the communication system except the terminal.

Optionally, the clock information synchronization module 902 is configured to,

Transmitting the TSN clock information to a base station or user plane function UPF equipment so that the base station or the UPF equipment transmits the TSN clock information to the other terminals;

Or alternatively

And sending the TSN clock information to the other terminals through a direct communication mode.

Optionally, the apparatus further includes:

And the main node indication module is used for sending main node indication information to the other terminals, wherein the main node indication information is used for indicating that the terminal is a terminal serving as a TSN clock node of the main time sensitive network.

Optionally, the clock information synchronization module is configured to,

Periodically synchronizing the TSN clock information to the other terminals;

Or alternatively

And synchronizing the TSN clock information to the other terminals when the specified trigger condition is detected.

Referring to fig. 10, a block diagram of a clock information synchronization apparatus according to an embodiment of the application is shown. The device has the function of realizing the clock information synchronization method example, and the function can be realized by hardware or can be realized by executing corresponding software by hardware. The device may be the first node described above, or may be provided in the first node; the first node may be a terminal side node device. As shown in fig. 10, the apparatus may include:

a terminal information acquiring module 1001, configured to acquire terminal information of each terminal in the communication system;

A target terminal determining module 1002, configured to determine a target terminal from the terminals according to the terminal information of each terminal, where the target terminal is a terminal serving as a TSN clock node of the master time sensitive network;

An indication information sending module 1003, configured to send terminal indication information to a base station, where the terminal indication information is configured to instruct the base station to send a master node notification to the target terminal, and the master node notification is configured 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:

the first terminal for transmitting TSN business in each terminal;

or the geographic position of each terminal is fixed;

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

or the terminals determined by network side equipment outside the base station in the terminals;

or establishing or supporting a specific DRB or QoS flow in the terminals;

Or terminals with appointed terminal identification in the terminals.

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

The terminals negotiate a determined terminal group;

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

or a terminal group determined by network side equipment outside the base station in each terminal.

Optionally, the indication information sending module 1003 is further configured to,

And sending the terminal indication information to at least one of CNC, AMF equipment, SMF equipment or user plane function UPF equipment.

Optionally, the terminal indication information includes:

Referring to fig. 11, a block diagram of a clock information synchronization apparatus according to an embodiment of the application is shown. The device has the function of realizing the clock information synchronization method example, and the function can be realized by hardware or can be realized by executing corresponding software by hardware. The device may be the terminal described above or may be provided in the terminal. As shown in fig. 11, the apparatus may include:

a notification receiving module 1101, configured to receive a master node notification sent by a base station; the main node notification is sent when the base station receives 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 serving as a TSN clock node of a main time sensitive network in each terminal in a communication system;

and the clock information synchronization module 1102 is configured 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 configured to,

Transmitting the TSN clock information to the base station or user plane function UPF equipment so that the base station or the UPF equipment transmits the TSN clock information to the other terminals;

Or alternatively

Optionally, the apparatus further includes:

Optionally, the clock information synchronization module 1102 is configured to,

Periodically synchronizing the TSN clock information to the other terminals;

Or alternatively

It should be noted that, when the apparatus provided in the foregoing embodiment performs the functions thereof, only the division of the respective functional modules is used as an example, in practical application, the foregoing functional allocation may be performed by different functional modules according to actual needs, that is, the content structure of the device is divided into different functional modules, so as to perform all or part of the functions described above.

The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein.

Referring to fig. 12, a schematic structural diagram of a terminal 120 according to an embodiment of the present application is shown. The terminal 120 may include: processor 121, receiver 122, transmitter 123, memory 124, and bus 125.

Processor 121 includes one or more processing cores, and 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 one communication component, which may be a communication chip. The communication chip may also be referred to as a transceiver.

Memory 124 is coupled to processor 121 via bus 125.

The memory 124 may be used for storing a computer program for execution by the processor 121 to implement the steps performed by the terminal in the method embodiments described above.

Further, memory 124 may be implemented by any type of volatile or nonvolatile storage device or combination thereof, including but not limited to: magnetic or optical disks, electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), static Random Access Memory (SRAM), read-only memory (ROM), magnetic memory, flash memory, 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 for receiving information and a transmitter for transmitting information);

The transceiver is used for receiving a main node notification sent by the base station; the main node notification is sent when the base station receives 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 serving as a TSN clock node of a main time sensitive network in each terminal in a communication system;

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

In one possible implementation, the transceiver, when synchronizing the TSN clock information of the terminal to other terminals in the communication system than the terminal, is configured to,

Or alternatively

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

Periodically synchronizing the TSN clock information to the other terminals;

Or alternatively

Referring to fig. 13, a schematic structural diagram of a first node 130 according to an embodiment of the present application is shown, where the first node is a network 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.

Processor 131 includes one or more processing cores, and 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 one communication component, which may be a communication chip. The communication chip may also be referred to as a transceiver.

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

The memory 134 may be used to store a computer program for execution by the processor 131 to perform the various steps performed by the base station in the method embodiments described above.

Further, the memory 134 may be implemented by any type of volatile or nonvolatile storage device, including but not limited to: magnetic or optical disks, electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), static Random Access Memory (SRAM), read-only memory (ROM), magnetic memory, flash memory, 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 for receiving information and a transmitter for transmitting information);

the processor is configured 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 respective terminal information of the terminals, where the target terminal is a terminal serving as a TSN clock node of the master time sensitive network;

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

In one 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 one possible implementation, when the first node is a CNC, AMF, SMF or UPF device, the transceiver is configured to,

And sending terminal indication information to a base station, wherein the terminal indication information is used for indicating the base station to send the main node notification to the target terminal.

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

In one possible implementation, 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;

and transmitting the TSN clock information to other terminals except the target terminal in the communication system.

In one possible implementation, the transceiver is configured to transmit, to the wireless device,

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

Or alternatively

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

Referring to fig. 14, a schematic structural diagram of a terminal 140 according to an embodiment of the application is shown. The terminal 140 may include: processor 141, receiver 142, transmitter 143, memory 144, and bus 145.

Processor 141 includes one or more processing cores, and 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 one communication component, which may be a communication chip. The communication chip may also be referred to as a transceiver.

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

The memory 144 may be used to store a computer program for execution by the processor 141 to perform the various steps performed by the terminal in the method embodiments described above.

Further, the memory 144 may be implemented by any type of volatile or nonvolatile storage device, including but not limited to: magnetic or optical disks, electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), static Random Access Memory (SRAM), read-only memory (ROM), magnetic memory, flash memory, programmable read-only memory (PROM).

Or alternatively

Periodically synchronizing the TSN clock information to the other terminals;

Or alternatively

Referring to fig. 15, a schematic structural diagram of a first node 150 according to an embodiment of the present application is shown, where the first node is a network node device in a communication system. The base station 150 may include: processor 151, receiver 152, transmitter 153, memory 154 and bus 155.

Processor 151 includes one or more processing cores, and processor 151 executes software programs and modules to perform various functional applications and information processing.

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

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

The memory 154 may be used to store a computer program for execution by the processor 151 to perform the various steps performed by the base station in the method embodiments described above.

Further, the memory 154 may be implemented by any type or combination of volatile or nonvolatile memory devices including, but not limited to: magnetic or optical disks, electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), static Random Access Memory (SRAM), read-only memory (ROM), magnetic memory, flash memory, programmable read-only memory (PROM).

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

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

the first terminal for transmitting TSN business in each terminal;

or the geographic position of each terminal is fixed;

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

or establishing or supporting a specific DRB or QoS flow in the terminals;

Or terminals with appointed terminal identification in the terminals.

In one possible implementation, when the first node is a specified terminal group, the specified terminal group is:

The terminals negotiate a determined terminal group;

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

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

The embodiment of the application also provides a computer readable storage medium, wherein the storage medium stores a computer program, and the computer program is loaded and executed by a processor to realize the clock information synchronization method.

The application also provides a computer program product which, when run on a terminal, causes the terminal to perform the above-described clock information synchronization method.

The application also provides a computer program product which, when run on a base station, causes the base station to perform the above-described clock information synchronization method.

Those skilled in the art will appreciate that in one or more of the examples described above, the functions described in the embodiments of the present application may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, these functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

The foregoing description of the exemplary embodiments of the application is not intended to limit the application to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the application.

Claims

1. A method of clock information synchronization, the method being performed by a first node, the first node being a network side node device in a communication system, the method comprising:

Acquiring terminal information of each terminal in the communication system, wherein the terminal information comprises at least one of terminal capability information, time sensitive network TSN service information, cell coverage information, terminal mobile information, terminal position information and terminal identification information;

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 master TSN clock node, and specifically: determining a terminal meeting a condition as the target terminal based on at least one of the terminal capability information, the TSN service information, the cell coverage information, the terminal movement information, the terminal position information and the terminal identification information according to a preset screening sequence;

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, so that TSN clock synchronization under the scene that the target terminal is used as a master TSN clock node is realized.

2. The method according to claim 1, wherein 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 of claim 2, wherein when the first node is a CNC, AMF, SMF, or UPF device, the sending a master node notification to the target terminal comprises:

4. A method according to claim 3, wherein the terminal indication information comprises:

The method comprises the steps of setting up or setting up at least one of a terminal identifier of a target terminal, a service cell identifier of the target terminal, a service base station identifier of the target terminal, a TSN clock domain identifier of the target terminal, a data radio bearer DRB identifier for transmitting TSN clock information, a QoS flow identifier for transmitting TSN clock information and a TSN service identifier of the target terminal.

5. The method of claim 2, wherein 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;

6. The method of claim 5, wherein the receiving the TSN clock information sent by the target terminal comprises:

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

Or alternatively

7. The method according to any one of claims 1 to 6, wherein 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 capabilities as a master TSN clock node;

The TSN service information is used for indicating whether the corresponding terminal supports or will transmit TSN service, whether the corresponding terminal establishes or supports establishing specific DRB or QoS flow, and at least one of the service characteristics of the TSN service which the corresponding terminal supports or will transmit;

8. A method of clock information synchronization, the method being performed by a terminal, the method comprising:

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 serving as a TSN clock node of a main time sensitive network in each terminal in a communication system; the first node determines the target terminal according to the following method: determining a terminal meeting a condition as the target terminal based on at least one of terminal capability information, TSN service information, cell coverage information, terminal mobile information, terminal position information and terminal identification information according to a preset screening sequence;

And synchronizing the TSN clock information of the terminal to other terminals except the terminal in the communication system, so as to realize TSN clock synchronization under the scene that the target terminal is used as a master TSN clock node.

9. The method of claim 8, wherein synchronizing the TSN clock information of the terminal to other terminals in the communication system than the terminal comprises:

Or alternatively

10. The method of claim 8, wherein the method further comprises:

and sending main node indication information to the other terminals, wherein the main node indication information is used for indicating that the terminals are terminals serving as TSN clock nodes of the main time sensitive network.

11. The method of claim 8, wherein synchronizing the TSN clock information of the terminal to other terminals in the communication system than the terminal comprises:

periodically synchronizing the TSN clock information to the other terminals;

Or alternatively

12. A clock information synchronization method, the method being performed by a first node, the first node being a terminal side node device in a communication system, the method comprising:

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 master TSN clock node, and specifically: screening out a first terminal set which supports a high-precision clock and has the capability of serving as a master TSN clock node according to the terminal capability information; screening a second terminal set supporting TSN service from the first terminal set, and/or enabling service characteristics of the TSN service to meet specified characteristics; determining a terminal from the second terminal set as the target terminal;

And sending terminal indication information to a base station, wherein the terminal indication information is used for indicating the base station to send a master node notification to the target terminal, and the master node notification is used for indicating the target terminal to synchronize TSN clock information to other terminals except the target terminal in the communication system, so that TSN clock synchronization under the scene that the target terminal is used as a master TSN clock node is realized.

13. The method of claim 12, wherein when the first node is a designated terminal, the designated terminal is:

the first terminal for transmitting TSN business in each terminal;

or the geographic position of each terminal is fixed;

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

or establishing or supporting a specific Data Radio Bearer (DRB) or a terminal of a quality of service (QoS) flow in each terminal;

Or terminals with appointed terminal identification in the terminals.

14. The method of claim 12, wherein when the first node is a designated terminal group, the designated terminal group is:

The terminals negotiate a determined terminal group;

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

15. The method according to claim 12, wherein the method further comprises:

And sending the terminal indication information to at least one of 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.

16. The method of claim 12, wherein the terminal indication information comprises:

17. The method according to any one of claims 12 to 16, wherein 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 capabilities as a master TSN clock node;

18. A method of clock information synchronization, the method being performed by a terminal, the method comprising:

Receiving a main node notification sent by a base station; the main node notification is sent when the base station receives 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 serving as a TSN clock node of a main time sensitive network in each terminal in a communication system; the first node determines the target terminal according to the following method: determining a terminal meeting a condition as the target terminal based on at least one of the terminal capability information, TSN service information, cell coverage information, terminal movement information, terminal position information and terminal identification information according to a preset screening sequence;

19. The method of claim 18, wherein synchronizing the TSN clock information of the terminal to other terminals in the communication system than the terminal comprises:

Or alternatively

20. The method of claim 18, wherein the method further comprises:

21. The method of claim 18, wherein synchronizing the TSN clock information of the terminal to other terminals in the communication system than the terminal comprises:

periodically synchronizing the TSN clock information to the other terminals;

Or alternatively

22. A clock information synchronization apparatus, the apparatus being used in a first node, the first node being a node on a network side in a communication system, the apparatus comprising:

A terminal information acquisition module, configured to acquire 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 mobile information, terminal location information, and terminal identification information;

The target terminal determining module is configured to determine a target terminal from the terminals according to the terminal information of each terminal, where the target terminal is a terminal serving as a master TSN clock node, and specifically: screening out a first terminal set which supports a high-precision clock and has the capability of serving as a master TSN clock node according to the terminal capability information; screening a second terminal set supporting TSN service from the first terminal set, and/or enabling service characteristics of the TSN service to meet specified characteristics; determining a terminal from the second terminal set as the target terminal;

23. The apparatus of claim 22, wherein the first node is a base station, a central control node, CNC, an access and mobility management function, AMF, a session management function, SMF, or a user plane function, UPF.

24. The apparatus of claim 23, wherein the device comprises a plurality of sensors,

The notification sending module is configured to send terminal indication information to a base station when the first node is CNC, AMF equipment, SMF equipment or UPF equipment, where the terminal indication information is used to instruct the base station to send the master node notification to the target terminal.

25. The apparatus of claim 24, wherein the terminal indication information comprises:

26. The apparatus of claim 23, wherein the apparatus further comprises:

27. The apparatus of claim 26, wherein the clock information receiving module is configured to,

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

Or alternatively

28. The apparatus according to any one of claims 22 to 27, wherein 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 capabilities as a master TSN clock node;

29. A clock information synchronizing apparatus for use in a terminal, the apparatus comprising:

The notification receiving module is used for receiving a main node notification sent by a first node, wherein the main node notification is sent when the first node determines that the terminal is a target terminal; the target terminal is a terminal serving as a TSN clock node of a main time sensitive network in each terminal in a communication system; the first node determines the target terminal according to the following method: determining a terminal meeting a condition as the target terminal based on at least one of terminal capability information, TSN service information, cell coverage information, terminal mobile information, terminal position information and terminal identification information according to a preset screening sequence;

and the clock information synchronization module is used for synchronizing the TSN clock information of the terminal to other terminals except the terminal in the communication system, so as to realize TSN clock synchronization under the scene that the target terminal is used as a master TSN clock node.

30. The apparatus of claim 29, wherein the clock information synchronization module is configured to,

Or alternatively

31. The apparatus of claim 29, wherein the apparatus further comprises:

32. The apparatus of claim 29, wherein the clock information synchronization module is configured to,

Periodically synchronizing the TSN clock information to the other terminals;

Or alternatively

33. A clock information synchronization apparatus for use in a first node, the first node being a terminal side node device in a communication system, the apparatus comprising:

The indication information sending module is used for sending terminal indication information to the base station, the terminal indication information is used for indicating the base station to send a master node notification to the target terminal, and the master node notification is used for indicating the target terminal to synchronize TSN clock information to other terminals except the target terminal in the communication system, so that TSN clock synchronization under the scene that the target terminal serves as a master TSN clock node is realized.

34. The apparatus of claim 33, wherein when the first node is a designated terminal, the designated terminal is:

the first terminal for transmitting TSN business in each terminal;

or the geographic position of each terminal is fixed;

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

Or terminals with appointed terminal identification in the terminals.

35. The apparatus of claim 33, wherein when the first node is a designated terminal group, the designated terminal group is:

The terminals negotiate a determined terminal group;

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

36. The apparatus of claim 33, wherein the means for sending the indication information is further configured to,

37. The apparatus of claim 33, wherein the terminal indication information comprises:

38. The apparatus according to any one of claims 33 to 37, wherein 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 capabilities as a master TSN clock node;

39. A clock information synchronizing apparatus for use in a terminal, the apparatus comprising:

The notification receiving module is used for receiving a main node notification sent by the base station; the main node notification is sent when the base station receives 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 serving as a TSN clock node of a main time sensitive network in each terminal in a communication system; the first node determines the target terminal according to the following method: determining a terminal meeting a condition as the target terminal based on at least one of terminal capability information, TSN service information, cell coverage information, terminal mobile information, terminal position information and terminal identification information according to a preset screening sequence;

40. The apparatus of claim 39, wherein the clock information synchronization module is configured to,

Or alternatively

41. The apparatus of claim 39, wherein the apparatus further comprises:

42. The apparatus of claim 39, wherein the clock information synchronization module is configured to,

Periodically synchronizing the TSN clock information to the other terminals;

Or alternatively

43. A first node, wherein the first node is a network side node device in a communication system, the first node comprising a processor, a memory, and a transceiver;

the processor is configured 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 mobile information, terminal location information, and terminal identification information;

The processor is configured to determine, from the respective terminals, a target terminal according to respective terminal information of the respective terminals, where the target terminal is a terminal serving as a master TSN clock node, and specifically: screening out a first terminal set which supports a high-precision clock and has the capability of serving as a master TSN clock node according to the terminal capability information; screening a second terminal set supporting TSN service from the first terminal set, and/or enabling service characteristics of the TSN service to meet specified characteristics; determining a terminal from the second terminal set as the target terminal;

The transceiver is configured to send a master node notification to the target terminal, where the master node notification is configured to instruct the target terminal to synchronize TSN clock information to other terminals in the communication system except the target terminal, so as to implement TSN clock synchronization under a scenario that the target terminal is used as a master TSN clock node.

44. A terminal comprising a processor, a memory, and a transceiver;

The transceiver is configured to receive 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 serving as a TSN clock node of a main time sensitive network in each terminal in a communication system; the first node determines the target terminal according to the following method: determining a terminal meeting a condition as the target terminal based on at least one of terminal capability information, TSN service information, cell coverage information, terminal mobile information, terminal position information and terminal identification information according to a preset screening sequence;

The transceiver is further configured to synchronize the TSN clock information of the terminal to other terminals in the communication system except for the terminal, so that TSN clock synchronization under a scenario that the target terminal is used as a master TSN clock node is implemented.

45. A first node, wherein the first node is a terminal-side node device in a communication system, the first node comprising a processor, a memory, and a transceiver;

The transceiver is configured to send terminal indication information to a base station, where the terminal indication information is configured to instruct the base station to send a master node notification to the target terminal, and the master node notification is configured to instruct the target terminal to synchronize TSN clock information to other terminals in the communication system except the target terminal, so as to implement TSN clock synchronization under a scenario that the target terminal is used as a master TSN clock node.

46. A terminal comprising a processor, a memory, and a transceiver;

The transceiver is used for receiving a main node notification sent by the base station; the main node notification is sent when the base station receives 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 serving as a TSN clock node of a main time sensitive network in each terminal in a communication system; the first node determines the target terminal according to the following method: determining a terminal meeting a condition as the target terminal based on at least one of terminal capability information, TSN service information, cell coverage information, terminal mobile information, terminal position information and terminal identification information according to a preset screening sequence;

47. A computer readable storage medium, wherein a computer program is stored in the storage medium, the computer program being for execution by a processor to implement the clock information synchronization method of any one of claims 1 to 21.