WO2022171048A1 - Procédé de transmission d'informations, dispositif de communication et support de stockage - Google Patents

Procédé de transmission d'informations, dispositif de communication et support de stockage Download PDF

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Publication number
WO2022171048A1
WO2022171048A1 PCT/CN2022/075336 CN2022075336W WO2022171048A1 WO 2022171048 A1 WO2022171048 A1 WO 2022171048A1 CN 2022075336 W CN2022075336 W CN 2022075336W WO 2022171048 A1 WO2022171048 A1 WO 2022171048A1
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Prior art keywords
terminal
information
time
message
type
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PCT/CN2022/075336
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English (en)
Chinese (zh)
Inventor
柯小婉
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维沃移动通信有限公司
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Publication of WO2022171048A1 publication Critical patent/WO2022171048A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/24—Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements

Definitions

  • the present application relates to the field of wireless communication technologies, and in particular, to an information transmission method, a communication device, and a storage medium.
  • time-sensitive communications In the Industrial Internet, there are time-sensitive data, such as robot instructions, that need to be executed sequentially within a specified time.
  • time-sensitive data such as robot instructions
  • network transmission resources are shared, and there is delay and jitter in data transmission, which cannot support time-sensitive data.
  • more and more services or applications are sensitive to transmission delay. Therefore, a time-sensitive communication is proposed to support the transfer of time-sensitive data.
  • how to improve the management effect of time synchronization such as determining whether to apply time synchronization and how to support time synchronization under different architectures, is a technical problem that needs to be solved urgently.
  • the embodiments of the present application relate to an information transmission method, a communication device, and a storage medium, so as to solve the problem of how to improve the management effect of time synchronization.
  • an embodiment of the present application provides an information transmission method, executed by a first communication device, including:
  • a first operation is performed, wherein the first operation includes at least one of the following:
  • the first synchronization includes at least one of the following: the terminal and/or the first network is synchronized with the master clock outside the first network, and the terminal and/or the first network is synchronized with the master clock outside the first network based on the second protocol , the terminal is synchronized with the master clock of the first network, and is synchronized based on the reference time information, and the time of the first time precision is synchronized;
  • the first type of message is used for sending clock related information
  • the second type of message is a related message of the time synchronization protocol
  • the first interface includes: an interface connected to a data network, a port on a network-side time-sensitive network adapter (Network-side TSN Translator, NW-TT);
  • NW-TT Network-side TSN Translator
  • the first QoS guarantee includes at least one of the following: time-sensitive communication guarantee, delay guarantee, and guaranteeing the first data flow or the second data channel according to the time-sensitive communication auxiliary information;
  • the second data channel is a data channel for transmitting the data of the first service or the first data traffic.
  • an embodiment of the present application provides an information transmission method, executed by a second communication device, including:
  • a second operation is performed, wherein the second operation includes at least one of the following:
  • the first information includes at least one of the following: a medium access control (Medium Access Control, MAC) address of the terminal or an IP address of the terminal; residence time of the terminal; first indication information; fourth instruction information;
  • a medium access control Medium Access Control, MAC address of the terminal or an IP address of the terminal
  • residence time of the terminal first indication information
  • fourth instruction information fourth instruction information
  • the first indication information is used to indicate at least one of the following:
  • the terminal is the termination point of the first service or the first data traffic or the terminal is not the termination point of the first service or the first data traffic;
  • the terminal is co-located with a device-side time-sensitive network adapter (Device-side TSN Translator, DS-TT);
  • a device-side time-sensitive network adapter (Device-side TSN Translator, DS-TT);
  • the terminal supports or does not support the DS-TT function
  • the terminal supports or does not support the first type of message
  • the terminal supports or does not support a first protocol, and the first protocol is a protocol for selecting a master clock;
  • the terminal supports or does not support the second type of message
  • the terminal supports or does not support time synchronization based on the second protocol
  • the terminal supports or does not support obtaining reference time information
  • the terminal supports or does not support time synchronization based on reference time information
  • the terminal supports or does not support time synchronization with the first time precision
  • the fourth indication information is used to indicate at least one of the following:
  • the first service or the first data flow needs or does not need to perform the first synchronization
  • the first QoS guarantee requires or does not require the first synchronization
  • the feature of the first service or the first data traffic includes or does not include time-related parameters
  • the first service or the first data flow requires or does not require the terminal to be synchronized with the master clock of the first network
  • the second information includes at least one of the following:
  • the MAC address of the DS-TT port is the MAC address of the DS-TT port.
  • an embodiment of the present application provides an information transmission method, executed by a third communication device, including:
  • first-type message is used to send clock-related information
  • second-type message is a time synchronization protocol-related message
  • a third operation is performed according to at least one of the first type of message and the second type of message, wherein the third operation includes at least one of the following:
  • a type of operation that skips the third operation includes at least one of the following:
  • the manipulated second type of message is sent to the downstream communication device.
  • an embodiment of the present application provides an information transmission method, executed by a fourth communication device, including:
  • a fourth operation is performed, and the fourth operation includes:
  • Send fourth information where the fourth information includes at least one of the following: second indication information, third indication information, synchronization period, time domain information, service description information, data traffic description information, and first time precision;
  • the second indication information is used to indicate at least one of the following: the terminal is required to acquire reference time information, the terminal is required to perform time synchronization based on the acquired reference time information, and the terminal is required to perform a first operation with a radio access network (Radio Access Network, RAN). Time synchronization of time precision first time precision;
  • the third indication information is used to request the terminal dwell time.
  • an embodiment of the present application provides an information transmission method, executed by a fifth communication device, including:
  • fourth information includes at least one of the following: second indication information and/or third indication information, synchronization period, time domain information, service description information, data traffic description information, and first time precision ;
  • a fifth operation is performed, wherein the fifth operation includes:
  • Time synchronization is performed based on the obtained reference time information
  • the second indication information is used to indicate at least one of the following: the terminal is required to acquire reference time information, the terminal is required to perform time synchronization based on the acquired reference time information, and the terminal is required to perform time synchronization with the first time precision with the radio access network RAN. a time precision;
  • the third indication information is used to request the terminal dwell time.
  • an embodiment of the present application provides an information transmission method, executed by a sixth communication device, including:
  • a sixth operation is performed, and the sixth operation includes one of the following:
  • Reference time information is sent, and the reference time information includes first description information.
  • the first description information includes at least one of the following: service description information, and data traffic description information.
  • an embodiment of the present application provides a communication device, where the communication device is a first communication device, including:
  • An execution module configured to execute a first operation, wherein the first operation includes at least one of the following:
  • the first synchronization includes at least one of the following: the terminal and/or the first network is synchronized with the master clock outside the first network, and the terminal and/or the first network is synchronized with the master clock outside the first network based on the second protocol , the terminal is synchronized with the master clock of the first network, and is synchronized based on the reference time information, and the time of the first time precision is synchronized;
  • the first type of message is used for sending clock related information
  • the second type of message is a related message of the time synchronization protocol
  • the first interface includes: an interface for connecting to a data network, and a port on the network-side time-sensitive network adapter NW-TT;
  • the first QoS guarantee includes at least one of the following: time-sensitive communication guarantee, delay guarantee, and guaranteeing the first data flow or the second data channel according to the time-sensitive communication auxiliary information;
  • the second data channel is a data channel for transmitting the data of the first service or the first data traffic.
  • an embodiment of the present application provides a communication device, where the communication device is a second communication device, including:
  • An execution module configured to execute a second operation, wherein the second operation includes at least one of the following:
  • the first information includes at least one of the following: the MAC address of the terminal or the IP address of the terminal; the residence time of the terminal; the first indication information; the fourth indication information;
  • the first indication information is used to indicate at least one of the following:
  • the terminal is the termination point of the first service or the first data traffic or the terminal is not the termination point of the first service or the first data traffic;
  • the terminal is co-located with DS-TT;
  • the terminal supports or does not support the DS-TT function
  • the terminal supports or does not support the first type of message
  • the terminal supports or does not support a first protocol, and the first protocol is a protocol for selecting a master clock;
  • the terminal supports or does not support the second type of message
  • the terminal supports or does not support time synchronization based on the second protocol
  • the terminal supports or does not support obtaining reference time information
  • the terminal supports or does not support time synchronization based on reference time information
  • the terminal supports or does not support time synchronization with the first time precision
  • the fourth indication information is used to indicate at least one of the following:
  • the first service or the first data traffic needs or does not need to perform the first synchronization
  • the first QoS guarantee requires or does not require the first synchronization
  • the feature of the first service or the first data traffic includes or does not include time-related parameters
  • the first service or the first data flow requires or does not require the terminal to be synchronized with the master clock of the first network
  • the second information includes at least one of the following:
  • the MAC address of the DS-TT port is the MAC address of the DS-TT port.
  • an embodiment of the present application provides a communication device, where the communication device is a third communication device, including:
  • a receiving module configured to receive at least one of a first type of message and a second type of message, wherein the first type of message is used to send clock related information, and the second type of message is a related message of a time synchronization protocol ;
  • an execution module configured to execute a third operation according to at least one of the first type of message and the second type of message, wherein the third operation includes at least one of the following:
  • a type of operation that skips the third operation includes at least one of the following:
  • the manipulated second type of message is sent to the downstream communication device.
  • an embodiment of the present application provides a communication device, where the communication device is a fourth communication device, including:
  • An execution module configured to execute a fourth operation, the fourth operation includes:
  • a sending module configured to send fourth information, where the fourth information includes at least one of the following: second indication information, third indication information, synchronization period, time domain information, service description information, data traffic description information, a time precision;
  • the second indication information is used to indicate at least one of the following: the terminal is required to acquire reference time information, the terminal is required to perform time synchronization based on the acquired reference time information, and the terminal is required to perform time synchronization with the first time precision with the radio access network RAN. a time precision;
  • the third indication information is used to request the terminal dwell time.
  • an embodiment of the present application provides a communication device, where the communication device is a fifth communication device, including:
  • an acquisition module configured to acquire fourth information, where the fourth information includes at least one of the following: second indication information and/or third indication information, synchronization period, information in the time domain, service description information, and data traffic description information , the first time accuracy;
  • An execution module configured to execute a fifth operation according to the fourth information, wherein the fifth operation includes:
  • Time synchronization is performed based on the obtained reference time information
  • the second indication information is used to indicate at least one of the following: the terminal is required to acquire reference time information, the terminal is required to perform time synchronization based on the acquired reference time information, and the terminal is required to perform time synchronization with the first time precision with the radio access network RAN. a time precision;
  • the third indication information is used to request the terminal dwell time.
  • an embodiment of the present application provides a communication device, where the communication device is a sixth communication device, including:
  • An execution module configured to execute a sixth operation, where the sixth operation includes one of the following:
  • a sending module for sending the reference time information and the first description information
  • Reference time information is sent, and the reference time information includes first description information.
  • the first description information includes at least one of the following: service description information, and data traffic description information.
  • an embodiment of the present application provides a communication device, including a processor, a memory, and a computer program stored on the memory and executable on the processor, where the computer program is executed by the processor.
  • the steps of implementing the information transmission method on the first communication device side provided by the embodiments of the present application, or the steps of implementing the information transmission methods on the second communication device side provided by the embodiments of the present application, or the steps of implementing the information transmission methods provided by the embodiments of the present application The steps of the information transmission method on the third communication device side, or the steps of implementing the information transmission method on the fourth communication device side provided by the embodiments of the present application, or the steps of implementing the information transmission method on the fifth communication device side provided by the embodiments of the present application.
  • an embodiment of the present application provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the first communication provided by the embodiment of the present application is implemented
  • the steps of the information transmission method on the device side, or the steps of implementing the information transmission method on the second communication device side provided by the embodiment of the present application, or the steps of implementing the information transmission method on the third communication device side provided by the embodiment of the present application or, the steps of implementing the information transmission method on the fourth communication device side provided by the embodiment of the present application, or the steps of implementing the information transmission method on the fifth communication device side provided by the embodiment of the present application, or the steps of implementing the embodiment of the present application
  • the steps of the information transmission method on the side of the sixth communication device are provided.
  • an embodiment of the present application provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction to implement the implementation of the present application
  • the information transmission method on the first communication device side provided by the example of the present application, or the information transmission method on the second communication device side provided by the embodiment of the present application, or the information transmission method on the third communication device side provided by the embodiment of the present application. or, implement the fourth communication device-side information transmission method provided by the embodiment of the present application, or implement the fifth communication device-side information transmission method provided by the embodiment of the present application, or implement the sixth embodiment of the present application.
  • Information transmission method on the communication device side is provided by the example of the present application, or the information transmission method on the second communication device side provided by the embodiment of the present application, or the information transmission method on the third communication device side provided by the embodiment of the present application.
  • a computer program product is provided, the computer program product is stored in a non-transitory storage medium, and the computer program product is executed by at least one processor to implement the first method provided by the embodiments of the present application.
  • the fourth communication device-side information transmission method provided by the embodiment of the application, or the fifth communication-device-side information transmission method provided by the embodiment of the present application, or the sixth communication device-side information provided by the embodiment of the present application transfer method.
  • a first operation is performed, where the first operation includes at least one of the following: only sending the first type message and/or the second type message to the first interface, and not sending the first type message to the terminal Type message and/or second type message, select the master clock for the terminal; reject the request for requesting the first synchronization; reject the first quality of service QoS guarantee for the first service or the first data traffic; wherein the first Synchronization includes at least one of the following: the terminal and/or the first network is synchronized with the master clock outside the first network, the terminal and/or the first network is synchronized with the master clock outside the first network based on the second protocol, the terminal and the first network are synchronized.
  • the master clock of a network is synchronized based on reference time information, and the first time precision is time synchronization; the first type of message is used to send clock related information; the second type of message is a related message of a time synchronization protocol;
  • the first interface includes: an interface for connecting to a data network and a port on the network-side time-sensitive network adapter NW-TT; the first QoS guarantee includes at least one of the following: time-sensitive communication guarantee, delay guarantee, and assistance based on time-sensitive communication
  • the information guarantees the first data flow or the second data channel; the second data channel is a data channel for transmitting the data of the first service or the first data flow. In this way, since the above-mentioned first operation is performed, the management effect of time synchronization can be improved.
  • FIG. 1-A is a schematic structural diagram of an applicable wireless communication system according to an embodiment of the present application.
  • FIG. 1-B is a schematic structural diagram of another applicable wireless communication system provided by an embodiment of the present application.
  • 1-C is a schematic structural diagram of another applicable wireless communication system provided by an embodiment of the present application.
  • FIG. 3 is a flowchart of another information transmission method provided by an embodiment of the present application.
  • FIG. 4 is a flowchart of another information transmission method provided by an embodiment of the present application.
  • FIG. 6 is a flowchart of another information transmission method provided by an embodiment of the present application.
  • FIG. 7 is a flowchart of another information transmission method provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram of an application scenario provided in an embodiment of the present application.
  • FIG. 9 is a schematic diagram of another application scenario provided in an embodiment of the present application.
  • FIG. 10 is a structural diagram of a communication device provided by the application.
  • 11 is a structural diagram of another communication device provided by the application.
  • 13 is a structural diagram of another communication device provided by the application.
  • 15 is a structural diagram of another communication device provided by the application.
  • FIG. 16 is a structural diagram of another communication device provided by this application.
  • first, second and the like in the description and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and "first”, “second” distinguishes Usually it is a class, and the number of objects is not limited.
  • the first object may be one or multiple.
  • “and/or” in the description and claims refers to at least one of the connected objects, and the character “/" generally indicates that the contextual objects are in an "and/or” relationship.
  • LTE Long Term Evolution
  • LTE-Advanced LTE-Advanced
  • LTE-A Long Term Evolution-Advanced
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency-Division Multiple Access
  • system and “network” in the embodiments of the present application are often used interchangeably, and the described technology can be used not only for the above-mentioned systems and radio technologies, but also for other systems and radio technologies.
  • NR New Radio
  • the following description describes a New Radio (NR) system for example purposes, and NR terminology is used in most of the description below, although these techniques are also applicable to applications other than NR system applications, such as 6th generation ( 6th Generation , 6G) communication system.
  • 6th generation 6th Generation
  • time sensitivity may also be referred to as periodic deterministic (Periodic deterministic).
  • Time-sensitive communication can also be called Periodic Deterministic Communication.
  • Time-sensitive data streams can also be referred to as periodic deterministic data streams.
  • a time-sensitive network technology such as IEEE TSN (Time Sensing Network).
  • Periodic deterministic communication is to transmit data periodically at the transmission interval.
  • FIG. 1-A shows a block diagram of a wireless communication system to which embodiments of the present application can be applied.
  • the wireless communication system includes: a service or data traffic termination point, DS-TT, a terminal, a first network, a data network, and an Application Function (AF).
  • a terminal is not a termination point for service or data traffic.
  • the termination point is connected to the terminal through DS-TT.
  • FIG. 1-B shows a block diagram of another wireless communication system to which the embodiments of the present application can be applied.
  • the wireless communication system includes: a terminal, a first network, a data network and an AF.
  • the terminal is a termination point, but DS-TT is not supported on the terminal
  • FIG. 1-C shows a block diagram of another wireless communication system to which the embodiments of the present application can be applied.
  • the wireless communication system includes: a terminal, a first network, a data network, and an application function (Application Function, AF), where the terminal is co-located with the DS-TT.
  • Application Function Application Function
  • the terminal is the end node, and the terminal supports the DS-TT function.
  • the terminal may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, a supercomputer Ultra-Mobile Personal Computer (UMPC), Mobile Internet Device (MID), Wearable Device (Wearable Device) or Vehicle User Equipment (VUE), Pedestrian User Equipment (Pedestrian User Equipment, PUE) and other terminal-side devices, wearable devices include: bracelets, headphones, glasses, etc. It should be noted that, the embodiment of the present application does not limit the specific type of the terminal 11 .
  • the first network includes a RAN network element and a core network network element (CN network element).
  • CN network element core network network element
  • the core network element may include but is not limited to at least one of the following: core network equipment, core network node, core network function, core network network element, mobility management entity (Mobility Management Entity, MME), connection Access mobility management function (Access Management Function, AMF), session management function (Session Management Function, SMF), user plane function (User Plane Function, UPF), serving gateway (serving GW, SGW), PDN gateway (PDN Gate Way, PDN gateway), Policy Control Function (PCF), Time Sensing Network Application Function (TSN AF), Policy and Charging Rules Function (PCRF), GPRS service support Node (Serving GPRS Support Node, SGSN), Gateway GPRS Support Node (Gateway GPRS Support Node, GGSN), Unified Data Management (Unified Data Management, UDM), Unified Data Repository (Unified Data Repository, UDR), Network Open Function (Network Exposure Function, NEF), Home Subscriber Server (HSS), Application Function (AF), Centralized Network Configuration (C
  • MME
  • FIGS. 1-A, 1-B, and 1-C is only for illustration, and in this embodiment of the present application, the network architecture of the first network is not limited.
  • a RAN network element may include, but is not limited to, at least one of the following: a radio access network device, a radio access network node, a radio access network function, a radio access network unit, and the 3rd Generation Partnership Project (Third Generation Partnership Project, 3GPP) Radio Access Network, Non-3GPP Radio Access Network, Centralized Unit (CU), Distributed Unit (DU), Base Station, Evolved Node B (eNB, eNB) ), 5G Base Station (gNB), Radio Network Controller (RNC), Base Station (NodeB), Non-3GPP Inter Working Function (N3IWF), Access Controller (AC) Node, Access Point (AP) device or Wireless Local Area Networks (WLAN) node, Non-3GPP InterWorking Function (N3IWF).
  • 3GPP 3rd Generation Partnership Project
  • 3GPP 3rd Generation Partnership Project
  • 3GPP 3rd Generation Partnership Project
  • CU Centralized Unit
  • DU Distributed Unit
  • Base Station evolved Node B (e
  • the NW-TT When the 5G master clock (Grand Master, GM) is used, the NW-TT generates an announcement message (announce message) and sends it to the DS-TT, and the DS-TT sends it to the external device through its port.
  • the terminal when the terminal is an end station, the terminal has already obtained the 5G system (5GS) clock from the RAN and does not need to obtain a notification message.
  • 5GS 5G system
  • NW-TT can recognize this situation and does not send a notification message to the terminal of the end station.
  • AF triggers time-sensitive services, and AF triggers time-sensitive services that may use three clocks: 1) 5G GM; 2) external master clock (external GM) 3) Mechanisms other than gPTP or PTP such as Network Time Protocol (NTP). How does the terminal know which type of 5G GM to monitor.
  • obtaining or obtaining may be understood as obtaining from configuration, receiving, receiving after request, obtaining through self-learning, deriving and obtaining according to unreceived information, or obtaining after processing according to received information, Specifically, it can be determined according to actual needs, which is not limited in this embodiment of the present application. For example, when a certain capability indication information sent by the device is not received, it can be deduced that the device does not support the capability.
  • the sending can include broadcasting, broadcasting in system messages, and returning after responding to the request.
  • the communication device may include at least one of the following: a communication network element and a terminal.
  • the communication network elements may include at least one of the following: a core network network element and a radio access network network element.
  • the port may be one of the following Ethernet ports and IP ports.
  • the channel may include but is not limited to one of the following: a PDU session, a PDN connection, a QoS flow, a bearer, and an Internet Protocol Security (IPsec) channel, wherein the bearer may Evolved Radio Access Bearer (E-RAB), Radio Access Bearer (RAB), Data Radio Bearer (DRB), Signaling Radio Bearer (Signalling Radio Bearers) , SRB) etc.
  • E-RAB Evolved Radio Access Bearer
  • RAB Radio Access Bearer
  • DRB Data Radio Bearer
  • Signalling Radio Bearers Signaling Radio Bearer
  • the TT port, the port on the TT, the port on the TT side, and the port on the TT side represent the same meaning and may be used in combination.
  • the dwell time between the terminal and the DS-TT (also referred to as the delay between the terminal and the DS-TT) includes the time required for the data packet to pass through the terminal and the DS-TT.
  • the terminal residence time includes one of the following: the time required for the data packet to pass through the terminal, the time required for the data packet to be sent from the application client to the terminal, and the time required for the data to arrive at the application client through the terminal. It takes time.
  • the terminal does not support DS-TT includes at least one of the following: the terminal does not support the DS-TT function, and the terminal does not support connection with DS-TT.
  • the DS-TT function includes at least one of the following: a first type of message, a first protocol, a second protocol, a second type of message, support for obtaining reference time information, support for time synchronization based on reference time information, support for a first time precision time synchronization.
  • the reference time information or reference time is provided by a RAN network element.
  • the first service or the first data flow may be used to refer to a service in general, or to indicate one or more services.
  • the first service or the first data flow includes at least one of the following: a time-sensitive service, a service requiring time synchronization, and a service requiring time synchronization with a first time precision .
  • the endpoint (eg, End Station) includes at least one of the following: a consumer of a service, an executor of the service, and the data of the service will not continue to be transmitted.
  • the dwell time may also be referred to as at least one of the following: link delay, link time overhead, and dwell time overhead.
  • the terminal being the termination point of the first service or the first data traffic includes that an application (such as an application client) in the terminal is the termination point of the first service or the first data traffic
  • the first-type message is a first-type message directly generated by the first communication device or a first-type message generated based on a received first-type message outside the first network
  • the service description information includes at least one of the following: service type information, and service identification information.
  • the service type information includes at least one of the following: a time-sensitive service, a service guaranteed by time-sensitive communication assistance information (Time Sensitive Communication Assistance Information, TSCAI), a time synchronization service, a time-sensitive network, and the like.
  • TSCAI Time Sensitive Communication Assistance Information
  • the description information of the data traffic includes at least one of the following: description information of the application, target IP address, target port, source IP address, source port, protocol number, data field ( Data Network Name, DNN), non-IP description information, domain description information, connection capability.
  • the description information of the application includes at least one of the following: identification information of the operating system, and identification information of the application.
  • the description information of the domain includes at least one of the following: domain name description, fully qualified domain name (Fully Qualified Domain Name, FQDN).
  • time synchronization has the same meaning as clock synchronization. Can be mixed.
  • time precision and time granularity have the same meaning.
  • Time precision can be used to represent time units.
  • the reference time information includes at least one of the following:
  • reference time including the reference time of the first time precision
  • Type information of the reference time eg, UTC, or DST, or GPS, or local time
  • the precision (or granularity) of the reference time (eg, 1ns, 10ns, 1us, 1ms, 10ms or 1s);
  • the reference time information is equivalent to the reference time.
  • the operation of determining the master clock includes determining an optimal master clock
  • the second protocol includes at least one of the following: generalized precision clock protocol gPTP, precision clock protocol PTP, and network clock protocol NTP;
  • the second type of message includes at least one of the following: related messages of the generalized precision clock protocol gPTP, related messages of the precision clock protocol PTP, and related information of the network clock protocol NTP.
  • the first type of message includes an announce message in the Best Master Clock Algorithm (Best Master Clock Algorithm, BMCA) protocol.
  • the announce message can be used to send the characteristic information of the clock, and other devices in the time domain use this message for the optimal master clock algorithm.
  • the time-sensitive communication guarantee includes guaranteeing according to time-sensitive communication feature information.
  • the time-sensitive communication assistance information may be generated according to the time-sensitive communication characteristic information.
  • the time-sensitive communication assistance information may include one or more of the time-sensitive communication characteristic information.
  • the time-sensitive communication feature information and/or the time-sensitive communication auxiliary information includes one of the following indications: data packet arrival time, interval period between data packets, direction, data packet size, delay requirements, transmission rate requirements, information in the time domain, fourth indication information, synchronization period, information in the time domain, service description information, data flow description information, and the first time precision.
  • the interval period between data packets is calculated from the time when the data packets start to be sent. The interval period between data packets may also be referred to as a data packet arrival period or a data packet transmission period.
  • the port state is a port state of a port of a bridge formed by a communication network.
  • the first network bridge may be a network bridge formed by a communication network.
  • the bridge may be composed of DS-TT, UE and the first network.
  • the bridge may be constituted by a first network.
  • the bridge may consist of the first network and the DS-TT as described in Figure 1-C.
  • the first network may or may not support NW-TT.
  • the synchronization of the terminal with the master clock of the first network includes at least one of the following: the terminal acquires reference time information of the first network, and performs synchronization according to the reference time information.
  • the reference time information is provided by a RAN network element of the first network.
  • an embodiment of the present application provides an information transmission method, which is executed by a first communication device.
  • the first communication device includes but is not limited to a RAN network element or a core network element (such as one of the following: NW-TT, gateway (such as UPF), PCF, NEF, AF); the RAN network element or core network element may be is a communication device in the first network, and the method includes:
  • Step 201 Perform a first operation, wherein the first operation includes at least one of the following:
  • the first synchronization includes at least one of the following: the terminal and/or the first network is synchronized with the master clock outside the first network, and the terminal and/or the first network is synchronized with the master clock outside the first network based on the second protocol , the terminal is synchronized with the master clock of the first network, and is synchronized based on the reference time information, and the time of the first time precision is synchronized;
  • the first type of message is used for sending clock related information
  • the second type of message is a related message of the time synchronization protocol
  • the first interface includes: an interface connected to a data network, a port on the NW-TT;
  • the first QoS guarantee includes at least one of the following: time-sensitive communication guarantee, delay guarantee, and guaranteeing the first data traffic or the second data channel according to the time-sensitive communication auxiliary information;
  • the second data channel is a data channel for transmitting the data of the first service or the first data traffic.
  • the above-mentioned first interface is an interface or port on a gateway (eg, a port of an NW-TT).
  • the above-mentioned sending only the first type message and/or the second type message to the first interface may include sending only the first type message and/or the second type message to the data network.
  • the above-mentioned sending only the first type message and/or the second type message to the first interface may be sending the first type message and/or the second type message only through the port of the NW-TT.
  • the above-mentioned sending only the first type of message and/or the second type of message to the first interface may be sending the first type of message and/or the second type of message only to the data network and the port through the NW-TT .
  • the above-mentioned first type of message may be an announcement message.
  • the above-mentioned first type of message may be used to determine the master clock, eg, to determine the best master clock.
  • the first operation may include at least one of the following.
  • the first operation may include at least one of the following.
  • the first QoS guarantee is refused for the first service or the first data traffic.
  • the first type of message includes service description information or data traffic description information associated with the first type of message;
  • the second type of message includes business description information or data flow description information associated with the second type of message;
  • the service description information or data traffic description information associated with the first type of message is sent at the same time;
  • the service description information or data traffic description information associated with the second type of message is sent at the same time.
  • the suffix field of the first type of message includes description information of the data traffic.
  • service description information or data traffic description information associated with the first type of message is also sent to the terminal at the same time.
  • service description information or data traffic description information associated with the second type of message is also sent to the terminal at the same time.
  • service description information or data traffic description information associated with the first type of message is also sent to the first interface at the same time.
  • service description information or data traffic description information associated with the second type of message is also sent to the first interface at the same time.
  • the second protocol includes at least one of the following: Generalized Precision Time Protocol (gPTP), Precision Time Protocol (Precision Time Protocol, PTP), Network Time Protocol (Network Time Protocol, NTP);
  • gPTP Generalized Precision Time Protocol
  • PTP Precision Time Protocol
  • NTP Network Time Protocol
  • the second type of message includes at least one of the following: gPTP related messages, PTP related messages, and NTP related messages.
  • the above-mentioned selecting the master clock for the terminal may be selecting a 5G master clock or a 6G master clock for the terminal, or a master clock of other wireless communication networks.
  • the above-mentioned rejecting the request for requesting the first synchronization may be rejecting the first synchronization request sent by at least one of the following: an AF, a terminal, a RAN network element or a core network network element.
  • the first communication device may be the NEF.
  • the first data flow may be the first service or the first data flow of the terminal, and the first service or the first data flow may be the service currently used by the terminal.
  • the above-mentioned rejection of the request for requesting the first synchronization may be to reject the first QoS guarantee for the first service or the first data traffic sent by at least one of the following: AF, terminal, RAN network element or core network network element.
  • the first communication device may be the NEF.
  • the above-mentioned refusing to perform the first QoS guarantee on the first data flow may include one of the following: abandoning the QoS guarantee for the first data flow, and adopting other QoS guarantees for the first data flow.
  • the above-mentioned first synchronization may be that the terminal synchronizes with a master clock outside the first network, and/or the terminal synchronizes with a master clock outside the first network based on the second protocol.
  • the first synchronization may be that the first network synchronizes with a master clock outside the first network, and/or the first network synchronizes with a master clock outside the first network based on the second protocol.
  • the above-mentioned first synchronization may be that the terminal synchronizes with a master clock outside the first network, and the first network synchronizes with a master clock outside the first network; and/or, the terminal synchronizes with the first network based on the second protocol.
  • a master clock outside the network is synchronized, and the first network is synchronized with the master clock outside the first network based on the second protocol.
  • the above-mentioned first synchronization may be synchronization based on reference time information, for example: synchronization based on at least one of the following:
  • reference time including the reference time of the first time precision
  • Type information of the reference time for example, Coordinated Universal Time (UTC), or Daylight Saving Time (DST), or Global Positioning System (GPS), or local time;
  • UTC Coordinated Universal Time
  • DST Daylight Saving Time
  • GPS Global Positioning System
  • the precision (or granularity) of the reference time (eg, 1ns, 10ns, 1us, 1ms, 10ms or 1s);
  • the first synchronization may be time synchronization with a first time precision, wherein, the first time precision includes one of the following: 1 nanosecond, 10 nanoseconds, 100 nanoseconds, 1 microsecond, 10 microseconds, 100 microseconds, 1 millisecond, 10 milliseconds, 100 milliseconds, 1 second.
  • the master clock outside the first network may be one of the following: the master clock of the data network, the master clock provided by the AF.
  • the second data channel includes a QoS flow
  • the first data channel includes at least one of the following: a protocol data unit (Protocol Data Unit, PDU) session, and a QoS flow.
  • PDU Protocol Data Unit
  • the second data channel is the same as or different from the first data channel.
  • the first QoS guarantee requires a first synchronization. In another embodiment, the first QoS guarantee does not require the first synchronization.
  • the not sending the first type of message to the terminal includes:
  • the step of sending the first type of message to the terminal is skipped or the first type of message prepared to be sent to the terminal is discarded.
  • the above step of skipping the first type of message sent to the terminal may be that, in some scenarios, the step of sending the first type of message to the terminal is configured, and skipping when the above-mentioned first operation is performed. this step.
  • discarding the first type of message that is prepared to be sent to the terminal may be, in some scenarios, the first type of message that is to be sent to the terminal, and this step is skipped when the above-mentioned first operation is performed.
  • the first operation includes at least one of the following:
  • the first condition includes at least one of the following:
  • the terminal is the termination point of the first service or the first data traffic
  • the terminal is co-located with the device-side time-sensitive network adapter DS-TT;
  • the context of the first data channel of the terminal indicates that the terminal is the termination point of the first service or the first data traffic
  • the terminal does not support DS-TT;
  • the first communication device is responsible for determining the port state or the first communication device is configured with the port state;
  • the terminal does not support the first type of message
  • the terminal does not support selecting a master clock or the terminal does not support a first protocol, and the first protocol is a protocol for selecting a master clock;
  • the terminal does not support the second type of message
  • the terminal does not support time synchronization based on the second protocol
  • the terminal does not support obtaining reference time information
  • the terminal does not support time synchronization based on reference time information
  • the terminal does not support time synchronization with the first time precision
  • the first service or the first data flow does not need to perform the first synchronization
  • the first QoS guarantee does not require first synchronization
  • the characteristics of the first service or the first data traffic do not include time-related parameters.
  • the first data channel is used to transmit at least one of the following: data of the first service or the first data flow, a first type of message related to the first service or the first data flow, the first service or the first data flow A related second type of message.
  • the first operation includes at least one of the following: sending only the first type message and/or the second type message to the first interface message, not sending the first type message and/or the second type message to the terminal;
  • the tenth condition includes at least one of the following:
  • the first service or the first data traffic needs to perform first synchronization
  • the first QoS guarantee requires a first synchronization
  • the characteristics of the first service or the first data traffic include time-related parameters.
  • the eleventh condition includes at least one of the following:
  • the terminal does not support obtaining reference time information
  • the terminal does not support time synchronization based on reference time information
  • the terminal does not support time synchronization with the first time precision
  • the terminal does not support the first type of message
  • the terminal does not support selecting a master clock or the terminal does not support a first protocol, and the first protocol is a protocol for selecting a master clock;
  • the terminal does not support the second type of message
  • the terminal does not support time synchronization based on the second protocol
  • the master clock of the first service or the first data flow is the master clock of the first network.
  • the first data flow is the data flow of the first service or the first data flow.
  • the above-mentioned time-related parameters include at least one of the following: the arrival time of the data packets, and the interval period between the data packets.
  • the port is a port of the first network bridge; and the port state is the port state of the first network bridge.
  • the first network bridge includes one of the following:
  • the bridge formed by the first network
  • the first network and the terminal, the bridge composed of DS-TT;
  • the first network may include NW-TT or may not include NW-TT.
  • the port of the first network bridge may include at least one of the following: a first interface, a UU interface.
  • the terminal such as an application on the terminal or an application client
  • the termination point is the termination point.
  • the port of the first network bridge may include at least one of the following: a first interface, a port on the DS-TT.
  • the terminal is not a service termination point, and the terminal is connected to the DS-TT.
  • the communication device connected after DS-TT is the termination point (as shown in Figure 1).
  • the terminal is a service termination point.
  • the terminal is co-located with the DS-TT, and the application on the terminal can communicate with the DS-TT on the terminal (as shown in Figure 1).
  • the first type of message is not sent to the terminal when the following conditions are met, and the conditions include at least one of the following: the terminal does not support the first type of message; the terminal does not support the first protocol, the first The protocol is the protocol used to select the master clock.
  • the second type of message is not sent to the terminal when the following conditions are met, and the condition includes at least one of the following: the terminal supports time synchronization based on the second protocol; the terminal supports time synchronization based on the second protocol Synchronize.
  • the second type of message is not sent to the terminal when the following conditions are met, and the condition includes at least one of the following: the terminal does not support the first type of message; the terminal does not support the first protocol, the first protocol is the protocol used to select the master clock.
  • the first network selects the master clock instead of the terminal, so even if the terminal does not support the selection of the master clock, the second type of message synchronization can be sent to the terminal.
  • the context of the first data channel of the terminal indicating that the terminal is the termination point of the first service or the first data traffic includes:
  • the terminal is the termination point of the first service or the first data traffic:
  • the residence time between the terminal and the DS-TT (UE-DS-TT residence time), the MAC address of the DS-TT port.
  • the dwell time between the terminal and the DS-TT may be the link overhead time between the terminal and the DS-TT.
  • the first communication device can determine that the terminal is the first Termination point for business or first data traffic.
  • the performing the first operation includes:
  • the second condition includes at least one of the following:
  • the terminal is the termination point of the first service or the first data traffic
  • the terminal is co-located with DS-TT;
  • the context of the first data channel of the terminal indicates that the terminal is the termination point of the first service or the first data traffic
  • the terminal does not support DS-TT;
  • the first communication device is responsible for determining the port state or the port state is configured on the first communication device; the terminal does not support the first type of message;
  • the terminal does not support selecting a master clock or the terminal does not support a first protocol, and the first protocol is a protocol for selecting a master clock;
  • the terminal supports obtaining reference time information
  • the terminal supports time synchronization based on reference time information
  • the terminal supports time synchronization with a first time precision
  • the first service or the first data traffic needs to perform first synchronization
  • the first QoS guarantee requires a first synchronization
  • the characteristics of the first service or the first data traffic include time-related parameters
  • the first data channel is used to transmit at least one of the following: data of the first service or the first data flow, a first type of message related to the first service or the first data flow, the first service or the first data flow A related second type of message.
  • the terminal does not support the selection of the master clock may be that the terminal does not support autonomous selection of the master clock.
  • the terminal does not support the first protocol may be that the terminal does not use the first protocol to select the master clock.
  • the performing the first operation includes:
  • At least one of the following is performed: rejecting the request for requesting the first synchronization; rejecting the first QoS guarantee for the first data stream;
  • the third condition includes at least one of the following:
  • the terminal is the termination point of the first service or the first data traffic
  • the terminal is co-located with DS-TT;
  • the context of the first data channel of the terminal indicates that the terminal is the termination point of the first service or the first data traffic
  • the terminal does not support DS-TT;
  • the first communication device is responsible for determining the port state or the first communication device is configured with the port state;
  • the terminal does not support the first type of message
  • the terminal does not support the selection of the master clock or the terminal does not support the first protocol, and the first protocol is a protocol for selecting the master clock;
  • the terminal does not support the second type of message
  • the terminal does not support time synchronization based on the second protocol
  • the terminal does not support obtaining reference time information
  • the terminal does not support time synchronization based on reference time information
  • the terminal does not support time synchronization with the first time precision
  • the first service or the first data traffic needs to perform first synchronization
  • the first QoS guarantee requires a first synchronization
  • the characteristics of the first service or the first data traffic include time-related parameters.
  • the above determination that synchronization with a master clock outside the first network based on the second protocol may be determined by determining that the first communication device needs to be synchronized with a master clock outside the first network based on the second protocol.
  • the above-mentioned determination that the second type message is to be sent to the terminal for synchronization with the master clock outside the first network may be determined by determining that the first communication device is to send the second type message to the terminal for synchronization with the outside of the first network.
  • the master clock is synchronized.
  • the terminal can perform time synchronization based on the second protocol only when it supports at least one of the following: support for obtaining reference time information; support for time synchronization based on reference time information; support for time synchronization with a first time precision.
  • the performing the first operation includes:
  • the first operation is performed, wherein the first information includes at least one of the following: the MAC address of the terminal or the IP address of the terminal; time; first indication information; fourth indication information;
  • the first indication information is used to indicate at least one of the following:
  • the terminal is the termination point of the first service or the first data traffic or the terminal is not the termination point of the first service or the first data traffic;
  • the terminal is co-located with DS-TT;
  • the terminal supports or does not support the DS-TT function
  • the terminal supports or does not support the first type of message
  • the terminal supports or does not support a first protocol, and the first protocol is a protocol for selecting a master clock;
  • the terminal supports or does not support the second type of message
  • the terminal supports or does not support time synchronization based on the second protocol
  • the terminal supports or does not support obtaining reference time information
  • the terminal supports or does not support time synchronization based on reference time information
  • the terminal supports or does not support time synchronization with the first time precision
  • the fourth indication information is used to indicate at least one of the following:
  • the first service or the first data flow needs or does not need to perform the first synchronization
  • the first QoS guarantee requires or does not require the first synchronization
  • the feature of the first service or the first data traffic includes or does not include time-related parameters
  • the first service or the first data flow requires or does not require the terminal to be synchronized with the master clock of the first network.
  • one or more pieces of the first information may be obtained from one or more first target terminals, for example: the above-mentioned first information is obtained in a PDU session request or a PDU session modification request initiated by the terminal. one or more of the information (such as the MAC address of the terminal or the IP address of the terminal; the dwell time of the terminal; the first indication information); or one item of the first information obtained from the AF (such as the first 4 indication information) or more.
  • the above-mentioned first target terminal includes at least one of the following: a terminal, a RAN network element, an AF, or an entity outside the network.
  • the first information may be obtained from the terminal.
  • At least one of the following may be obtained from the RAN: the terminal supports or does not support obtaining reference time information; the terminal supports or does not support time synchronization based on reference time information; the terminal supports or does not support Time synchronization for the first time precision.
  • the fourth indication information may be obtained from an entity or AF outside the network.
  • the characteristics of the first service or the first data traffic sent by an entity or AF outside the network may be confirmed from the characteristics of the first service or the first data traffic sent by an entity or AF outside the network that the characteristics of the first service or the first data traffic are included or not included time-related parameters.
  • performing the first operation includes:
  • the first operation is performed, where the first condition includes at least one of the following:
  • the terminal is the termination point of the first service or the first data traffic
  • the terminal is co-located with DS-TT;
  • the context of the first data channel of the terminal indicates that the terminal is the termination point of the first service or the first data traffic
  • the terminal does not support DS-TT;
  • the first communication device is responsible for determining the port state or the first communication device is configured with a port state
  • the terminal does not support the first type of message
  • the terminal does not support selecting a master clock or the terminal does not support a first protocol, and the first protocol is a protocol for selecting a master clock;
  • the terminal does not support the second type of message
  • the terminal does not support time synchronization based on the second protocol
  • the terminal does not support obtaining reference time information
  • the terminal does not support time synchronization based on reference time information
  • the terminal does not support time synchronization with the first time precision
  • the first service or the first data flow does not need to perform the first synchronization
  • the first QoS guarantee does not require first synchronization
  • the characteristics of the first service or the first data traffic do not include time-related parameters.
  • the first data channel is used to transmit at least one of the following: data of the first service or the first data flow, a first type of message related to the first service or the first data flow, the first service or the first data flow A related second type of message.
  • the above-mentioned first operation is performed only when the above-mentioned first information is obtained and the above-mentioned first condition is satisfied.
  • performing the first operation includes:
  • a master clock is selected for the terminal, where the second condition includes at least one of the following:
  • the terminal is the termination point of the first service or the first data traffic
  • the terminal is co-located with DS-TT;
  • the context of the first data channel of the terminal indicates that the terminal is the termination point of the first service or the first data traffic
  • the terminal does not support DS-TT;
  • the first communication device is responsible for determining the port state or the port state is configured on the first communication device; the terminal does not support the first type of message;
  • the terminal does not support selecting a master clock or the terminal does not support a first protocol, and the first protocol is a protocol for selecting a master clock;
  • the terminal supports obtaining reference time information
  • the terminal supports time synchronization based on reference time information
  • the terminal supports time synchronization with a first time precision
  • the first service or the first data traffic needs to perform first synchronization
  • the first QoS guarantee requires a first synchronization
  • the characteristics of the first service or the first data traffic include time-related parameters.
  • the first data channel is used to transmit at least one of the following: data of the first service or the first data flow, a first type of message related to the first service or the first data flow, the first service or the first data flow A related second type of message.
  • the above-mentioned first operation is performed only when the above-mentioned first information is obtained and the above-mentioned second condition is satisfied.
  • performing the first operation includes:
  • At least one of the following is performed: rejecting the request for requesting the first synchronization; rejecting the first QoS guarantee for the first data stream;
  • the third condition includes at least one of the following:
  • the terminal is the termination point of the first service or the first data traffic
  • the terminal is co-located with DS-TT;
  • the context of the first data channel of the terminal indicates that the terminal is the termination point of the first service or the first data traffic
  • the terminal does not support DS-TT;
  • the first communication device is responsible for determining the port state or the port state is configured on the first communication device
  • the terminal does not support the first type of message
  • the terminal does not support selecting a master clock or the terminal does not support a first protocol, and the first protocol is a protocol for selecting a master clock;
  • the terminal does not support the second type of message
  • the terminal does not support time synchronization based on the second protocol
  • the terminal does not support obtaining reference time information
  • the terminal does not support time synchronization based on reference time information
  • the terminal does not support time synchronization with the first time precision
  • the first service or the first data traffic needs to perform first synchronization
  • the first QoS guarantee requires a first synchronization
  • the characteristics of the first service or the first data traffic include time-related parameters.
  • the above-mentioned first operation is performed only when the above-mentioned first information is obtained and the above-mentioned third condition is satisfied.
  • the management effect of the master clock can be improved.
  • the above first operation can avoid sending the first type message and/or the second type message to the terminal to save resource overhead; another example: the above first operation can reject the first synchronization to improve the time synchronization effect of the terminal.
  • the master clock can be accurately selected for the terminal through the first operation, so as to improve the time synchronization effect of the terminal.
  • the second communication device may be at least one of the following: a terminal, an AF, or an entity outside the network, a core network element (such as AMF, SMF, NEF, PCF), RAN network element.
  • the method includes:
  • Step 301 Execute a second operation, wherein the second operation includes at least one of the following:
  • the first information includes at least one of the following: the MAC address of the terminal or the IP address of the terminal; the dwell time of the terminal; the first indication information; the fourth indication information;
  • the first indication information is used to indicate at least one of the following:
  • the terminal is the termination point of the first service or the first data traffic or the terminal is not the termination point of the first service or the first data traffic;
  • the terminal is co-located with DS-TT;
  • the terminal supports or does not support the DS-TT function
  • the terminal supports or does not support the first type of message
  • the terminal supports or does not support a first protocol, and the first protocol is a protocol for selecting a master clock;
  • the terminal supports or does not support the second type of message
  • the terminal supports or does not support time synchronization based on the second protocol
  • the terminal supports or does not support obtaining reference time information
  • the terminal supports or does not support time synchronization based on reference time information
  • the terminal supports or does not support time synchronization with the first time precision
  • the fourth indication information is used to indicate at least one of the following:
  • the first service or the first data flow needs or does not need to perform the first synchronization
  • the first QoS guarantee requires or does not require the first synchronization
  • the feature of the first service or the first data traffic includes or does not include time-related parameters
  • the first service or the first data flow requires or does not require the terminal to be synchronized with the master clock of the first network
  • the second information includes at least one of the following:
  • the MAC address of the DS-TT port is the MAC address of the DS-TT port.
  • the second communication device includes at least one of the following: AF, an entity outside the network, NEF, PCF, or SMF, the first information may include at least one of the following:
  • the first service or the first data flow needs or does not need to perform the first synchronization
  • the first QoS guarantee requires or does not require the first synchronization
  • the feature of the first service or the first data flow includes or does not include time-related parameters.
  • the first information may include at least one of the following:
  • First indication information where the first indication information is used to indicate at least one of the following:
  • the terminal is the termination point of the first service or the first data traffic or the terminal is not the termination point of the first service or the first data traffic;
  • the terminal is co-located with DS-TT;
  • the terminal supports or does not support the DS-TT function
  • the terminal supports or does not support the first type of message
  • the terminal supports or does not support a first protocol, and the first protocol is a protocol for selecting a master clock;
  • the terminal supports or does not support the second type of message
  • the terminal supports or does not support time synchronization based on the second protocol
  • the terminal supports or does not support obtaining reference time information.
  • the above-mentioned sending of the first information may be that the terminal sends the first information.
  • the terminal may send the first information in a PDU session establishment request or a PDU session modification request.
  • the above-mentioned sending of the first information may be that the RAN network element sends at least one of the following: the terminal supports or does not support obtaining the reference time information; the terminal supports or does not support time synchronization based on the reference time information; The terminal supports or does not support time synchronization with the first time precision.
  • an entity or AF outside the network sends the fourth indication information.
  • the characteristics of the first service or the first data traffic sent by an entity or AF outside the network may be confirmed from the characteristics of the first service or the first data traffic sent by an entity or AF outside the network that the characteristics of the first service or the first data traffic are included or not included time-dependent parameters
  • skipping or discarding the transmission of the second information may be skipping or discarding the transmission of the second information in sending a PDU session establishment request or a PDU session modification request.
  • the second information includes at least one of the following items: the dwell time between the terminal and the DS-TT, and the MAC address of the DS-TT port.
  • the port of the first network bridge may include at least one of the following: a first interface, a UU interface.
  • the terminal such as an application on the terminal or an application client
  • the termination point is the termination point.
  • the port of the first network bridge may include at least one of the following: a first interface, a port on the DS-TT.
  • the terminal is not a service termination point, and the terminal is connected to the DS-TT.
  • the communication device connected after DS-TT is the termination point (as shown in Figure 1).
  • the terminal is a service termination point.
  • the terminal is co-located with the DS-TT, and the application on the terminal can communicate with the DS-TT on the terminal (as shown in Figure 1).
  • the first information is sent when the following conditions are met, and the conditions include at least one of the following: the terminal does not support the first type of message; the terminal does not support the first protocol, and the first protocol is used for selecting The protocol of the master clock.
  • the first information is sent when the following conditions are met, and the conditions include at least one of the following: the terminal supports time synchronization based on the second protocol; the terminal supports time synchronization based on the second protocol.
  • the first information is sent when the following conditions are met, and the conditions include at least one of the following: the terminal does not support the first type of message; the terminal does not support the first protocol, and the first protocol is used for selecting The protocol of the master clock.
  • the performing the second operation includes:
  • the second operation is performed, wherein the fourth condition includes at least one of the following:
  • the terminal is the termination point of the first service or the first data traffic
  • the terminal is co-located with DS-TT or the terminal does not support DS-TT;
  • the context of the first data channel of the terminal indicates that the terminal is the termination point of the first service or the first data traffic
  • the first service is a service of time-sensitive communication
  • the first data flow is data flow of time-sensitive communication
  • the first data channel is used to transmit at least one of the following: data of the first service or the first data flow, a first type of message related to the first service or the first data flow, the first service or the first data flow A related second type of message.
  • the terminal is the termination point of the first service or the first data traffic:
  • the sending the first information includes:
  • the first information is sent through related signaling of the first data channel.
  • the above-mentioned data channel is used as a channel for data transmission.
  • the first data channel includes at least one of the following: a PDU session and a QoS flow.
  • the first communication device can be made to perform the first operation of the embodiment shown in FIG. 2 based on the above-mentioned first information or the second information skipped or discarded by the second communication device. operation, thereby improving the management effect of the master clock.
  • an embodiment of the present application further provides an information transmission method, which is executed by a third communication device.
  • the third communication device may be a terminal, and the method includes:
  • Step 401 Receive at least one of a first type of message and a second type of message, wherein the first type of message is used to send clock related information, and the second type of message is a related message of a time synchronization protocol;
  • Step 402 Perform a third operation according to at least one of the first type of message and the second type of message, where the third operation includes at least one of the following:
  • a type of operation that skips the third operation includes at least one of the following:
  • the manipulated second type of message is sent to the downstream communication device.
  • the above-mentioned receiving at least one of the first type message and the second type message may be receiving at least one of the first type message and the second type message sent by the network element of the network core network or the RAN network element. item.
  • discarding or ignoring the received first type message may be that the master clock is not determined according to the first type message, for example, the best master clock is not determined according to the first type message.
  • discarding or ignoring the received second-type message may be that time synchronization is not performed according to the second-type message.
  • the step of operating the received second type message includes at least one of the following:
  • the first residence time is the time required for the transmission of the second type of message in the first network or the first bridge;
  • the second master clock is the corresponding master clock in the second type of message.
  • the above entry timestamp may be used for timestamp (timestamp, TS) i representation, that is, TSi.
  • the above-mentioned first network bridge may be a time-sensitive network bridge.
  • performing time synchronization according to the second type of message includes:
  • the second master clock being the master clock corresponding to the second type of message
  • the first dwell time is the time required for the transmission of the second type of message in the first network or the first bridge.
  • the above-mentioned first dwell time may be calculated according to the time difference between the egress timestamp and the entry timestamp in the second type of message, or may be calculated according to the time difference of the second type of message received.
  • the time difference between the time and the entry timestamp in the second type of message calculates the first dwell time.
  • the discarding or ignoring the received first type message includes:
  • the received first type message is discarded or ignored, wherein the fifth condition includes at least one of the following:
  • the terminal is the termination point of the first service or the first data traffic
  • the terminal is co-located with DS-TT or the terminal does not support the DS-TT function;
  • the terminal does not support the first protocol and/or does not support the first type of message
  • the first type of message is a first type of message related to the first service or the first data flow.
  • the terminal is the termination point of the first service or the first data traffic
  • the context of the first data channel including the terminal indicates that the terminal is the termination point of the first service or the first data traffic
  • the context of the first data channel does not include at least one of the following items, it indicates that the terminal is the termination point of the first service or the first data traffic:
  • the dwell time between the terminal and the DS-TT, and the MAC address of the DS-TT port is the dwell time between the terminal and the DS-TT, and the MAC address of the DS-TT port.
  • the discarding or ignoring the received second type message includes:
  • the received first type message is discarded or ignored, wherein the sixth condition includes at least one of the following:
  • the terminal is the termination point of the first service or the first data traffic
  • the terminal does not support the DS-TT function
  • the terminal does not support time synchronization based on the second protocol and/or does not support the second type of message
  • the second type of message is a second type of message related to the first service or the first data flow
  • the terminal does not support obtaining reference time information
  • the terminal does not support time synchronization based on reference time information
  • the terminal does not support time synchronization with the first time precision
  • the first service or the first data flow does not need to perform the first synchronization
  • the first QoS guarantee does not require first synchronization
  • the characteristics of the first service or the first data traffic do not include time-related parameters
  • the first QoS guarantee includes at least one of the following: time-sensitive communication guarantee, delay guarantee, and guaranteeing the first data flow or the second data channel according to the time-sensitive communication auxiliary information;
  • the second data channel is a data channel that transmits or transmits data of the first service or the first data flow.
  • the second data channel includes a QoS flow; the first data channel includes at least one of the following: a PDU session, and a QoS flow.
  • the second data channel is the same as or different from the first data channel.
  • the first QoS guarantee requires a first synchronization. In another embodiment, the first QoS guarantee does not require the first synchronization.
  • the above-mentioned DS-TT function includes supporting synchronization based on the second protocol. Therefore, in the case where the DS-TT function is not supported, synchronization based on the second protocol is implicitly not supported.
  • the selecting a master clock according to the first type of message includes:
  • a master clock is selected according to the first type of message, wherein the seventh condition includes at least one of the following:
  • the terminal is the termination point of the first service or the first data traffic
  • the terminal is co-located with DS-TT or the terminal supports the DS-TT function;
  • the terminal supports messages based on the first protocol and/or supports the first type
  • the first type of message is a first type of message related to the first service or the first data flow
  • the terminal supports obtaining reference time information
  • the terminal supports time synchronization based on reference time information
  • the terminal supports time synchronization with a first time precision
  • the first service or the first data traffic needs to perform first synchronization
  • the first QoS guarantee requires a first synchronization
  • the characteristics of the first service or the first data traffic include time-related parameters.
  • the first protocol includes a protocol for optimal clock selection.
  • the third operation includes at least one of the following: discarding or ignoring the received second type of message;
  • the tenth condition includes at least one of the following:
  • the first service or the first data traffic needs to perform first synchronization
  • the first QoS guarantee requires a first synchronization
  • the characteristics of the first service or the first data traffic include time-related parameters.
  • the eleventh condition includes at least one of the following:
  • the terminal does not support obtaining reference time information
  • the terminal does not support time synchronization based on reference time information
  • the terminal does not support time synchronization with the first time precision
  • the terminal does not support the first type of message
  • the terminal does not support selecting a master clock or the terminal does not support a first protocol, and the first protocol is a protocol for selecting a master clock;
  • the terminal does not support the second type of message
  • the terminal does not support time synchronization based on the second protocol
  • the master clock of the first service or the first data flow is the master clock of the first network.
  • the third operation includes at least one of performing time synchronization and skipping the third operation according to the second type of message, wherein the The eighth condition includes at least one of the following:
  • the terminal is the termination point of the first service or the first data traffic
  • the terminal is co-located with DS-TT or the terminal supports the DS-TT function;
  • the terminal supports synchronization based on the second protocol
  • the termination point receives the second type of message from the first data channel or control plane signaling
  • the second type of message is a second type of message related to the first service or the first data flow.
  • the management effect of time synchronization can be improved by performing the third operation above.
  • an embodiment of the present application further provides an information transmission method, which is executed by a fourth communication device.
  • the fourth communication device includes but is not limited to: RAN network elements, core network network elements (one of the following in the first network: NW-TT, SMF, UPF, UPF, PCF, NEF, AF), and the method includes:
  • Step 501 Perform a fourth operation, where the fourth operation includes:
  • Send fourth information where the fourth information includes at least one of the following: second indication information, third indication information, synchronization period, time domain information, service description information, data traffic description information, and first time precision;
  • the second indication information is used to indicate at least one of the following: the terminal is required to acquire reference time information, the terminal is required to perform time synchronization based on the acquired reference time information, and the terminal is required to perform time synchronization with the first time precision with the radio access network RAN. a time precision;
  • the third indication information is used to request the terminal dwell time.
  • the reference time information is obtained from the RAN.
  • the fourth information is sent to the terminal.
  • the first time precision includes one of the following: 1 nanosecond, 10 nanoseconds, 100 nanoseconds, 1 microsecond, 10 microseconds, 100 microseconds, 1 millisecond, 10 milliseconds, 100 milliseconds, 1 second.
  • the above-mentioned second indication information is used to instruct the terminal to perform time synchronization with the RAN with the first time precision, or to instruct the terminal to perform time synchronization with the RAN.
  • the above-mentioned RAN is a RAN node currently accessed by the terminal or a cell under the RAN node.
  • the above-mentioned time synchronization of the first time precision includes synchronization with the master time of the first network.
  • the above-mentioned terminal residence time is the terminal residence time related to the first service or the first data flow. It can be understood that, for different first services or first data flows, the terminal residence time may be the same or different.
  • the reference time information obtained by the terminal includes at least one of the following:
  • the terminal reads a system message including reference time information
  • the terminal performs time synchronization based on the acquired reference time information.
  • the synchronization period includes at least one of the following: a period during which the terminal and the RAN perform time synchronization with a first time precision, a period during which the terminal tends to be configured with reference time information to the network, and the terminal requests the network to configure reference time information for the terminal. cycle.
  • the information of the time domain includes at least one of the following: the time domain to which the synchronization clock of the terminal and the RAN performs time synchronization with the first time precision, and the time domain to which the reference time information or the reference time belongs.
  • the service description information is used to indicate one of the following: a service to which the reference time information or the reference time is applicable, and a service to be synchronized based on the reference time information.
  • the description information of the data traffic is used to indicate one of the following: the data traffic to which the reference time information or the reference time is applicable, and the data traffic to be synchronized based on the reference time information.
  • the description information of the data traffic includes description information of an application, and the description information of the application is used to indicate one of the following: the application of the reference time information or the reference time is applicable, based on the reference time information Synchronized application.
  • the performing the fourth operation includes:
  • the fourth operation is performed when the ninth condition is satisfied, wherein the ninth condition includes at least one of the following:
  • the terminal is the termination point of the first service or the first data traffic
  • the terminal is co-located with DS-TT or does not support DS-TT;
  • the context of the first data channel of the terminal indicates that the terminal is the termination point of the first service or the first data traffic
  • the time-sensitive communication assistance information includes time-related parameters
  • the second data channel that requires terminal dwell time is the first service or the first data traffic of the data channel that transmits the first data traffic.
  • the first data flow may be data of the first service or the first data flow.
  • the second data channel includes a QoS flow.
  • the second data channel and the first data channel may be the same or different.
  • the time-related parameters include at least one of the following:
  • the AF when the terminal establishes a data channel (a PDU session or a QoS flow) of the first service or the first data flow in the first network, the AF has not requested the first network bridge for the first service or the first data flow. time delay. Therefore, according to the request of the AF, the first network may send the second indication information to the terminal. According to the terminal dwell time, the first network may generate the delay of the first network bridge.
  • a data channel a PDU session or a QoS flow
  • the terminal is the termination point of the first service or the first data traffic:
  • the dwell time between the terminal and the DS-TT, and the MAC address of the DS-TT port is the dwell time between the terminal and the DS-TT, and the MAC address of the DS-TT port.
  • the time synchronization effect or the time synchronization management effect of the terminal can be improved.
  • an embodiment of the present application further provides an information transmission method, which is executed by a fifth communication device.
  • the fifth communication device may be at least one of the following: a terminal, a RAN network element, an AF, or an entity outside the network.
  • the method includes:
  • Step 601 Obtain fourth information, where the fourth information includes at least one of the following: second indication information and/or third indication information, synchronization period, time domain information, service description information, data traffic description information, a time precision;
  • Step 602 Perform a fifth operation according to the fourth information, wherein the fifth operation includes:
  • Time synchronization is performed based on the obtained reference time information
  • the second indication information is used to indicate at least one of the following: the terminal is required to acquire reference time information, the terminal is required to perform time synchronization based on the acquired reference time information, and the terminal is required to perform time synchronization with the first time precision with the radio access network RAN. a time precision;
  • the third indication information is used to request the terminal dwell time
  • At least one of the synchronization period, time domain information, service description information, data traffic description information, and first time precision may be used to filter reference time information.
  • the first time precision includes one of the following: 1 nanosecond, 10 nanoseconds, 100 nanoseconds, 1 microsecond, 10 microseconds, 100 microseconds, 1 millisecond, 10 milliseconds, 100 milliseconds, 1 second.
  • the above-mentioned terminal residence time is a terminal residence time related to the first service or the first data flow. It can be understood that, for different first services or first data flows, the terminal residence time may be the same or different.
  • the obtaining reference time information includes at least one of the following:
  • Read system messages including reference time information
  • Sending the notification that the terminal tends to be configured with the reference time information or sending the request to configure the reference time information for the terminal includes sending a notification to the RAN network element that the terminal tends to be configured with the reference time information or sending a request to configure the reference time information for the terminal.
  • sending a notification that the terminal tends to be configured with reference time information or sending a request for configuring reference time information for the terminal includes: filtering information of the reference time information, used for filtering reference time information that conforms to the filtering information;
  • the filtering condition of the reference time information is at least one of the following: synchronization period, information in the time domain, service description information, description information of data traffic, and first time precision.
  • the synchronization period includes at least one of the following: a period during which the terminal and the RAN perform time synchronization with a first time precision, a period during which the terminal tends to be configured with reference time information to the network, and the terminal requests the network to configure reference time information for the terminal. cycle.
  • the information of the time domain includes at least one of the following: a time domain to which a synchronization clock for time synchronization of the terminal and the RAN with the first time precision belongs, and the time domain to which the reference time information or the reference time belongs.
  • the service description information is used to indicate one of the following: a service for which the reference time information or the reference time is applicable, and a service for which synchronization is performed based on the reference time information.
  • the description information of the data traffic is used to indicate one of the following: the data traffic to which the reference time information or the reference time is applicable, and the data traffic to be synchronized based on the reference time information.
  • the description information of the data traffic includes description information of an application, and the description information of the application is used to indicate one of the following: the application of the reference time information or the reference time is applicable, based on the reference time information Synchronized application.
  • the obtaining the fourth information includes one of the following: obtaining the fourth information from a layer above the fifth communication device access layer (Access Stratum, AS) layer, obtaining the fourth information from the fifth communication device non-access layer (Non Access Stratum, AS) layer.
  • -Access Stratum (NAS) layer obtains the fourth information, and obtains the fourth information from the NAS signaling of the network.
  • At least one item of the fourth information may be obtained from a layer above the AS layer of the fifth communication device, or at least one item of the fourth information may be obtained from a layer above the NAS layer of the fifth communication device.
  • item which may be at least one item of fourth information obtained from NAS signaling of the network.
  • the time synchronization effect or the time synchronization management effect of the terminal can be improved.
  • an embodiment of the present application further provides an information transmission method, which is executed by a sixth communication device.
  • the sixth communication device may be at least one of the following: a RAN network element; or, the sixth communication device includes at least one of the following: a terminal, a core network network element, an AF, or an entity outside the network.
  • the method includes:
  • Step 701. Perform a sixth operation, where the sixth operation includes one of the following:
  • Reference time information is sent, and the reference time information includes first description information.
  • the first description information includes at least one of the following: service description information, and data traffic description information.
  • the description information of the data traffic is used to indicate that the reference time information is applicable to the data traffic
  • the service description information is used to indicate that the reference time information is applicable to the service.
  • the method before performing the sixth operation, the method further includes:
  • sixth information includes at least one of the following: first description information, reference time information associated with the first description information; wherein the reference time information associated with the first description information includes the first description information or does not contain the first description information.
  • the reference time information is sent, and the reference time information includes description information of the data traffic.
  • the method before performing the sixth operation, the method further includes:
  • a sixth operation is performed according to the acquired information.
  • the notification that the terminal tends to be configured with the reference time information or the request for configuring the reference time information for the terminal includes the filtering information of the reference time information, which is used to filter the reference time information that conforms to the filtering information;
  • the filtering condition of the reference time information is at least one of the following: synchronization period, information in the time domain, service description information, description information of data traffic, and first time precision.
  • the reference time information and the description information of the data traffic are sent through an RRC message
  • the reference time information is sent through an RRC message, and the reference time information includes description information of the data traffic.
  • the RRC message includes at least one of the following: a system message, and a terminal-related RRC message.
  • the system message may be SIB9 defined by the protocol.
  • the above sixth operation can be utilized to improve the time synchronization management effect.
  • This embodiment includes the following steps:
  • Step 801 The terminal performs the second operation, which may be specifically described in the embodiment of FIG. 3 .
  • the terminal sends a NAS message, and the NAS message may include a PDU session establishment request or a PDU session modification request.
  • the NAS message or the related signaling of the PDU session may include one or more items of first information, for example, may include at least one of the following:
  • Terminal residence time (UE residence time);
  • the terminal is the termination point of the first service or the first data traffic:
  • the first indication information is used to indicate at least one of the following:
  • the terminal is the termination point of the first service or the first data traffic or the terminal is not the termination point of the first service or the first data traffic;
  • the terminal is co-located with DS-TT;
  • the terminal supports or does not support the DS-TT function
  • the terminal supports or does not support the first type of message
  • the terminal supports or does not support a first protocol, and the first protocol is a protocol for selecting a master clock;
  • the terminal supports or does not support the second type of message
  • the terminal supports or does not support time synchronization based on the second protocol.
  • Step 802 The AMF sends an update session management context request of the PDU session to the SMF.
  • Step 803 the SMF sends a session modification request to the UPF/NW-TT.
  • the session modification request includes the first information.
  • Step 804 the UPF/NW-TT sends a session modification response to the SMF.
  • the UPF/NW-TT performs the first operation, which is specifically described in the embodiment of FIG. 2 .
  • the UPF/NW-TT performs the first operation according to the received first information, as specifically described in the embodiment of FIG. 2 .
  • Step 805 the SMF triggers a session management policy association modification request to the PCF.
  • Step 806 The PCF sends an event notification to the AF to notify the port-related information container.
  • Step 807 the AF returns an event notification response to the PCF.
  • Step 808 The PCF sends a session management policy association modification response to the SMF.
  • Step 809 the SMF sends an update session context response of the PDU session to the AMF.
  • Step 810 The AMF sends a NAS message to the terminal, where the NAS message includes a PDU session resource modification acceptance.
  • This embodiment includes the following steps:
  • Step 901 The AF sends a session creation request to the NEF, where the request includes one or more items of time-sensitive communication feature information and/or first information.
  • the first information is fourth indication information.
  • Step 902 The NEF sends a policy authorization creation request to the PCF, where the request includes the bridge container.
  • the request includes the first information; in another embodiment, the bridge container includes the first information.
  • Step 903 The PCF sends a session management policy modification request to the SMF.
  • the request includes first information.
  • Step 904 the SMF sends a session modification request to the UPF/NW-TT.
  • the request includes first information.
  • the first information sent by the SMF includes the first information received from the AMF and/or the PCF.
  • Step 905 The UPF/NW-TT generates the first type of message, wherein, in this step, according to the terminal being the termination point, the following operations are also performed:
  • the notification message is still sent to the terminal, but the terminal serving as the termination point ignores or discards the received first type of message (as described in the embodiment of FIG. 4 , which will not be repeated here).
  • Step 906 the UPF/NW-TT sends a session modification response to the SMF.
  • Step 907 The SMF sends a session management policy association modification response to the PCF.
  • Step 908 the PCF sends a policy authorization creation response to the NEF.
  • Step 909 the NEF sends a session creation response to the AF.
  • Step 910 the SMF sends the updated session management context of the PDU session to the AMF, and the context is used for 5G GM synchronization.
  • Step 911 the AMF sends a NAS message to the terminal for 5G GM synchronization.
  • an embodiment of the present application provides a communication device, the communication device is a first communication device, and the first communication device includes but is not limited to a terminal, a TT (such as one of the following: DS-TT, NW-TT, No. One DS-TT, second DS-TT, first NW-TT, second NW-TT), CN network element (such as one of the following: SMF, UPF, PCF, NEF, AF), RAN network element, as shown in the figure 10.
  • the communication device 1000 includes:
  • An execution module 1001 configured to execute a first operation, wherein the first operation includes at least one of the following:
  • the first synchronization includes at least one of the following: the terminal and/or the first network is synchronized with the master clock outside the first network, and the terminal and/or the first network is synchronized with the master clock outside the first network based on the second protocol , the terminal is synchronized with the master clock of the first network, and is synchronized based on the reference time information, and the time of the first time precision is synchronized;
  • the first type of message is used for sending clock related information
  • the second type of message is a related message of the time synchronization protocol
  • the first interface includes: an interface for connecting to a data network, and a port on the network-side time-sensitive network adapter NW-TT;
  • the first QoS guarantee includes at least one of the following: time-sensitive communication guarantee, delay guarantee, and guaranteeing the first data traffic or the second data channel according to the time-sensitive communication auxiliary information;
  • the second data channel is a data channel for transmitting the data of the first service or the first data traffic.
  • the first operation includes at least one of the following:
  • the first condition includes at least one of the following:
  • the terminal is the termination point of the first service or the first data traffic
  • the terminal is co-located with the device-side time-sensitive network adapter DS-TT;
  • the context of the first data channel of the terminal indicates that the terminal is the termination point of the first service or the first data traffic
  • the terminal does not support DS-TT;
  • the first communication device is responsible for determining the port state or the first communication device is configured with the port state;
  • the terminal does not support the first type of message
  • the terminal does not support selecting a master clock or the terminal does not support a first protocol, and the first protocol is a protocol for selecting a master clock;
  • the terminal does not support the second type of message
  • the terminal does not support time synchronization based on the second protocol
  • the terminal does not support obtaining reference time information
  • the terminal does not support time synchronization based on reference time information
  • the terminal does not support time synchronization with the first time precision
  • the first service or the first data flow does not need to perform the first synchronization
  • the first QoS guarantee does not require first synchronization
  • the characteristics of the first service or the first data traffic do not include time-related parameters.
  • the first data channel is used to transmit at least one of the following: data of the first service or the first data flow, a first type of message related to the first service or the first data flow, the first service or the first data flow A related second type of message.
  • the performing the first operation includes:
  • the second condition includes at least one of the following:
  • the terminal is the termination point of the first service or the first data traffic
  • the terminal is co-located with DS-TT;
  • the context of the first data channel of the terminal indicates that the terminal is the termination point of the first service or the first data traffic
  • the terminal does not support DS-TT;
  • the first communication device is responsible for determining the port state or the port state is configured on the first communication device; the terminal does not support the first type of message;
  • the terminal does not support selecting a master clock or the terminal does not support a first protocol, and the first protocol is a protocol for selecting a master clock;
  • the terminal supports obtaining reference time information
  • the terminal supports time synchronization based on reference time information
  • the terminal supports time synchronization with a first time precision
  • the first service or the first data traffic needs to perform first synchronization
  • the first QoS guarantee requires a first synchronization
  • the characteristics of the first service or the first data traffic include time-related parameters
  • the first data channel is used to transmit at least one of the following: data of the first service or the first data flow, a first type of message related to the first service or the first data flow, the first service or the first data flow A related second type of message.
  • the performing the first operation includes:
  • At least one of the following is performed: rejecting the request for requesting the first synchronization; rejecting the first QoS guarantee for the first data stream;
  • the third condition includes at least one of the following:
  • the terminal is the termination point of the first service or the first data traffic
  • the terminal is co-located with DS-TT;
  • the context of the first data channel of the terminal indicates that the terminal is the termination point of the first service or the first data traffic
  • the terminal does not support DS-TT;
  • the first communication device is responsible for determining the port state or the first communication device is configured with the port state;
  • the terminal does not support the first type of message
  • the terminal does not support selecting a master clock or the terminal does not support a first protocol, and the first protocol is a protocol for selecting a master clock;
  • the terminal does not support the second type of message
  • the terminal does not support time synchronization based on the second protocol
  • the terminal does not support obtaining reference time information
  • the terminal does not support time synchronization based on reference time information
  • the terminal does not support time synchronization with the first time precision
  • the first service or the first data traffic needs to perform first synchronization
  • the first QoS guarantee requires a first synchronization
  • the characteristics of the first service or the first data traffic include time-related parameters.
  • the performing the first operation includes:
  • the first operation is performed, wherein the first information includes at least one of the following items: the MAC address of the terminal or the IP address of the terminal; the residence of the terminal time; first indication information; fourth indication information;
  • the first indication information is used to indicate at least one of the following:
  • the terminal is the termination point of the first service or the first data traffic or the terminal is not the termination point of the first service or the first data traffic;
  • the terminal is co-located with DS-TT;
  • the terminal supports or does not support the DS-TT function
  • the terminal supports or does not support the first type of message
  • the terminal supports or does not support a first protocol, and the first protocol is a protocol for selecting a master clock;
  • the terminal supports or does not support the second type of message
  • the terminal supports or does not support time synchronization based on the second protocol
  • the terminal supports or does not support obtaining reference time information
  • the terminal supports or does not support time synchronization based on reference time information
  • the terminal supports or does not support time synchronization with the first time precision
  • the fourth indication information is used to indicate at least one of the following:
  • the first service or the first data flow needs or does not need to perform the first synchronization
  • the first QoS guarantee requires or does not require the first synchronization
  • the feature of the first service or the first data traffic includes or does not include time-related parameters
  • the first service or the first data flow requires or does not require the terminal to be synchronized with the master clock of the first network.
  • performing the first operation includes:
  • the first operation is performed, where the first condition includes at least one of the following:
  • the terminal is the termination point of the first service or the first data traffic
  • the terminal is co-located with DS-TT;
  • the context of the first data channel of the terminal indicates that the terminal is the termination point of the first service or the first data traffic
  • the terminal does not support DS-TT;
  • the first communication device is responsible for determining the port state or the first communication device is configured with a port state
  • the terminal does not support the first type of message
  • the terminal does not support selecting a master clock or the terminal does not support a first protocol, and the first protocol is a protocol for selecting a master clock;
  • the terminal does not support the second type of message
  • the terminal does not support time synchronization based on the second protocol
  • the terminal does not support obtaining reference time information
  • the terminal does not support time synchronization based on reference time information
  • the terminal does not support time synchronization with the first time precision
  • the first service or the first data flow does not need to perform the first synchronization
  • the first QoS guarantee does not require first synchronization
  • the characteristics of the first service or the first data traffic do not include time-related parameters.
  • the first data channel is used to transmit at least one of the following: data of the first service or the first data flow, a first type of message related to the first service or the first data flow, the first service or the first data flow A related second type of message.
  • performing the first operation includes:
  • a master clock is selected for the terminal, where the second condition includes at least one of the following:
  • the terminal is the termination point of the first service or the first data traffic
  • the terminal is co-located with DS-TT;
  • the context of the first data channel of the terminal indicates that the terminal is the termination point of the first service or the first data traffic
  • the terminal does not support DS-TT;
  • the first communication device is responsible for determining the port state or the port state is configured on the first communication device; the terminal does not support the first type of message;
  • the terminal does not support selecting a master clock or the terminal does not support a first protocol, and the first protocol is a protocol for selecting a master clock;
  • the terminal supports obtaining reference time information
  • the terminal supports time synchronization based on reference time information
  • the terminal supports time synchronization with a first time precision
  • the first service or the first data traffic needs to perform first synchronization
  • the first QoS guarantee requires a first synchronization
  • the characteristics of the first service or the first data traffic include time-related parameters.
  • the first data channel is used to transmit at least one of the following: data of the first service or the first data flow, a first type of message related to the first service or the first data flow, the first service or the first data flow A related second type of message.
  • performing the first operation includes:
  • At least one of the following is performed: rejecting the request for requesting the first synchronization; rejecting the first QoS guarantee for the first data stream;
  • the third condition includes at least one of the following:
  • the terminal is the termination point of the first service or the first data traffic
  • the terminal is co-located with DS-TT;
  • the context of the first data channel of the terminal indicates that the terminal is the termination point of the first service or the first data traffic
  • the terminal does not support DS-TT;
  • the first communication device is responsible for determining the port state or the port state is configured on the first communication device
  • the terminal does not support the first type of message
  • the terminal does not support selecting a master clock or the terminal does not support a first protocol, and the first protocol is a protocol for selecting a master clock;
  • the terminal does not support the second type of message
  • the terminal does not support time synchronization based on the second protocol
  • the terminal does not support obtaining reference time information
  • the terminal does not support time synchronization based on reference time information
  • the terminal does not support time synchronization with the first time precision
  • the first service or the first data traffic needs to perform first synchronization
  • the first QoS guarantee requires a first synchronization
  • the characteristics of the first service or the first data traffic include time-related parameters.
  • the not sending the first type of message to the terminal includes:
  • the step of sending the first type of message to the terminal is skipped or the first type of message prepared to be sent to the terminal is discarded.
  • the context of the first data channel of the terminal indicating that the terminal is the termination point of the first service or the first data traffic includes:
  • the terminal is the termination point of the first service or the first data traffic:
  • the first type of message includes service description information or data traffic description information associated with the first type of message;
  • the second type of message includes service description information or data traffic description information associated with the second type of message;
  • the service description information or data traffic description information associated with the first type of message is sent at the same time;
  • the service description information or data traffic description information associated with the second type of message is sent at the same time.
  • the second protocol includes at least one of the following: Generalized Precision Clock Protocol gPTP, Precision Clock Protocol PTP, and Network Clock Protocol NTP;
  • the second type of message includes at least one of the following: gPTP related messages, PTP related messages, and NTP related messages.
  • the communication device 1000 can implement each process implemented by the first communication device in the method embodiment of the present application, and achieve the same beneficial effect, and to avoid repetition, details are not described here.
  • an embodiment of the present application provides another communication device, the communication device is a second communication device, and the second communication device includes but is not limited to a terminal, DS-TT, NW-TT, and CN network elements (such as the following One: SMF, UPF, PCF, NEF, AF), RAN network element, as shown in Figure 11, the communication device 1100 includes:
  • An execution module 1101 configured to execute a second operation, wherein the second operation includes at least one of the following:
  • the first information includes at least one of the following: the MAC address of the terminal or the IP address of the terminal; the residence time of the terminal; the first indication information; the fourth indication information;
  • the first indication information is used to indicate at least one of the following:
  • the terminal is the termination point of the first service or the first data traffic or the terminal is not the termination point of the first service or the first data traffic;
  • the terminal is co-located with DS-TT;
  • the terminal supports or does not support the DS-TT function
  • the terminal supports or does not support the first type of message
  • the terminal supports or does not support a first protocol, and the first protocol is a protocol for selecting a master clock;
  • the terminal supports or does not support the second type of message
  • the terminal supports or does not support time synchronization based on the second protocol
  • the terminal supports or does not support obtaining reference time information
  • the terminal supports or does not support time synchronization based on reference time information
  • the terminal supports or does not support time synchronization with the first time precision
  • the fourth indication information is used to indicate at least one of the following:
  • the first service or the first data flow needs or does not need to perform the first synchronization
  • the first QoS guarantee requires or does not require the first synchronization
  • the feature of the first service or the first data traffic includes or does not include time-related parameters
  • the first service or the first data flow requires or does not require the terminal to be synchronized with the master clock of the first network.
  • the second information includes at least one of the following:
  • the MAC address of the DS-TT port is the MAC address of the DS-TT port.
  • the performing the second operation includes:
  • the second operation is performed, wherein the fourth condition includes at least one of the following:
  • the terminal is the termination point of the first service or the first data traffic
  • the terminal is co-located with DS-TT or the terminal does not support DS-TT;
  • the context of the first data channel of the terminal indicates that the terminal is the termination point of the first service or the first data traffic
  • the first service is a service of time-sensitive communication
  • the first data flow is data flow of time-sensitive communication
  • the first data channel is used to transmit at least one of the following: data of the first service or the first data flow, a first type of message related to the first service or the first data flow, the first service or the first data flow A related second type of message.
  • the terminal is the termination point of the first service or the first data traffic:
  • the sending the first information includes:
  • the first information is sent through related signaling of the first data channel.
  • the communication device 1100 can implement each process implemented by the second communication device in the method embodiment of the present application, and achieve the same beneficial effect, and to avoid repetition, details are not described here.
  • an embodiment of the present application provides another communication device, the communication device is a third communication device, and the third communication device includes but is not limited to terminals, DS-TT, NW-TT, and CN network elements (such as the following One: SMF, UPF, PCF, NEF, AF), RAN network element, as shown in Figure 12, the communication device 1200 includes:
  • the receiving module 1201 is configured to receive at least one of a first type of message and a second type of message, wherein the first type of message is used to send clock related information, and the second type of message is related to a time synchronization protocol information;
  • An execution module 1202 configured to execute a third operation according to at least one of the first type of message and the second type of message, wherein the third operation includes at least one of the following:
  • a type of operation that skips the third operation includes at least one of the following:
  • the manipulated second type of message is sent to the downstream communication device.
  • the step of operating the received second type message includes at least one of the following:
  • the first residence time is the time required for the transmission of the second type of message in the first network or the first bridge;
  • the second master clock is the corresponding master clock in the second type of message.
  • performing time synchronization according to the second type of message includes:
  • the second master clock being the master clock corresponding to the second type of message
  • the first dwell time is the time required for the transmission of the second type of message in the first network or the first bridge.
  • the discarding or ignoring the received first type message includes:
  • the received first type message is discarded or ignored, wherein the fifth condition includes at least one of the following:
  • the terminal is the termination point of the first service or the first data traffic
  • the terminal is co-located with DS-TT or the terminal does not support the DS-TT function;
  • the terminal does not support the first protocol and/or does not support the first type of message
  • the first type of message is a first type of message related to the first service or the first data flow.
  • the discarding or ignoring the received second type message includes:
  • the received first type message is discarded or ignored, wherein the sixth condition includes at least one of the following:
  • the terminal is the termination point of the first service or the first data traffic
  • the terminal does not support the DS-TT function
  • the terminal does not support time synchronization based on the second protocol and/or does not support the second type of message
  • the second type of message is a second type of message related to the first service or the first data flow
  • the terminal does not support obtaining reference time information
  • the terminal does not support time synchronization based on reference time information
  • the terminal does not support time synchronization with the first time precision
  • the first service or the first data flow does not need to perform the first synchronization
  • the first QoS guarantee does not require first synchronization
  • the characteristics of the first service or the first data traffic do not include time-related parameters
  • the first QoS guarantee includes at least one of the following: time-sensitive communication guarantee, delay guarantee, and guaranteeing the first data traffic or the second data channel according to the time-sensitive communication auxiliary information;
  • the second data channel is a data channel that transmits or transmits data of the first service or the first data flow.
  • the selecting a master clock according to the first type of message includes:
  • a master clock is selected according to the first type of message, wherein the seventh condition includes at least one of the following:
  • the terminal is the termination point of the first service or the first data traffic
  • the terminal is co-located with DS-TT or the terminal supports the DS-TT function;
  • the terminal supports messages based on the first protocol and/or supports the first type
  • the first type of message is a first type of message related to the first service or the first data flow
  • the terminal supports obtaining reference time information
  • the terminal supports time synchronization based on reference time information
  • the terminal supports time synchronization with a first time precision
  • the first service or the first data traffic needs to perform first synchronization
  • the first QoS guarantee requires a first synchronization
  • the characteristics of the first service or the first data traffic include time-related parameters.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Small-Scale Networks (AREA)

Abstract

La présente invention concerne un procédé de transmission d'informations, un dispositif de communication et un support de stockage. Le procédé comprend : l'exécution d'une première opération, la première opération comprenant au moins un de ce qui suit : envoyer un message d'un premier type et/ou un message d'un second type uniquement à une première interface, ne pas envoyer le message d'un premier type et/ou le message d'un second type à un terminal, et sélectionner une horloge maître pour le terminal ; le refus d'une demande demandant une première synchronisation ; et le refus de réaliser une première garantie de QoS sur un premier service ou sur un premier trafic de données. La première synchronisation comprend au moins un de ce qui suit : le terminal et/ou un premier réseau se synchronisent avec une horloge maître externe au premier réseau ; le terminal et/ou le premier réseau se synchronisent avec l'horloge maître externe au premier réseau sur la base d'un second protocole ; le terminal se synchronise avec une horloge maître du premier réseau ; la réalisation d'une synchronisation sur la base d'informations de temps de référence ; et la réalisation d'une synchronisation temporelle avec une première précision temporelle.
PCT/CN2022/075336 2021-02-10 2022-02-07 Procédé de transmission d'informations, dispositif de communication et support de stockage WO2022171048A1 (fr)

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