WO2021004191A1

WO2021004191A1 - Method and apparatus for supporting time sensitive network

Info

Publication number: WO2021004191A1
Application number: PCT/CN2020/093416
Authority: WO
Inventors: 罗海燕; 黄曲芳; 戴明增
Original assignee: 华为技术有限公司
Priority date: 2019-07-09
Filing date: 2020-05-29
Publication date: 2021-01-14
Also published as: CN112217615A; CN112217615B

Abstract

Provided are a method and apparatus for supporting a time sensitive network, wherein same are used for solving the problem of a terminal device being unable to distinguish a time sensitive network (TSN) packet from a service data packet. The method comprises: a communication device receiving a first message sent by a wireless access network device, wherein the first message carries first information, and the first information is used for indicating that a data packet transmitted by a first protocol data unit (PDU) session is a TSN packet; and the communication device processing, on the basis of the first information, the data packet transmitted by the first PDU session.

Description

Method and device for supporting time-sensitive network

Cross references to related applications

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on July 9, 2019, with application number 201910615479.2, and the application title is "a method and device for supporting time-sensitive networks", the entire contents of which are incorporated by reference In this application.

Technical field

This application relates to the field of communication technology, and in particular to a method and device for supporting a time-sensitive network.

Background technique

3GPP R16 is discussing 5G RAN to support industrial time sensitive network (TSN). The clock synchronization error required by the TSN network is within 1 us. The TSN system sends timing information to the TSN end nodes through the 5G network to achieve the purpose of clock synchronization for the TSN end nodes in the same time domain. Generally speaking, the clock time of each TSN is the same.

At present, 5G RAN can support TSN through a transparent clock mode, that is, 5G system radio access network equipment can receive timing information sent by TSN system (such as precision time protocol (PTP) messages), 5G system radio access network equipment The timing information can be transmitted to the TSN end node through the intermediate node (Node-X). Node-X can help TSN end nodes and base stations to communicate through L2 relays. When the base station forwards TSN packets (such as TSN timing information) to the TSN end node through Node-X, Node-X needs to send the TSN packet to the Ethernet module for processing and then wirelessly send it to the TSN end node. When the base station sends service data, Node-X only needs to adapt the protocol layer and forward it to the TSN end node through the side link, instead of sending the service data to the Ethernet module for processing. For Node-X, how to identify TSN packets and business data packets is a continuing problem.

Summary of the invention

The present application provides a method and device for supporting a time-sensitive network to solve the problem that terminal equipment cannot distinguish between TSN packets and service data packets.

In the first aspect, the method for supporting a time-sensitive network provided by an embodiment of the present application includes: a communication device receives a first message sent by a radio access network device, the first message carries first information, and the first information is used to characterize the first protocol The data packet transmitted in a data unit (protocol data unit, PDU) session is a TSN packet; the communication device processes the data packet transmitted in the first PDU session based on the first information. In the embodiment of the present application, the wireless access network device instructs the communication device to let the communication device know whether the data packet transmitted by the PDU is a TSN packet, so that the communication device can treat the TSN packet differently from other service data packets.

In a possible design, the first information may be indicated by the type of the first PDU session. In the above design, the type of the first PDU session is used to indicate whether the data packet transmitted by the PDU session is a TSN packet, which can save signaling overhead.

In a possible design, the first information is indicated by the indication information carried in the first message. For example, the first message carries TSN-INDICATION, and the TSN-INDICATION may indicate the first information, that is, the TSN-INDICATION indicates the first message. The data packet transmitted in a PDU session is a TSN packet. In the above design, an indication message is used to indicate whether the data packet transmitted by the PDU session is a TSN packet, which can improve the flexibility of indication.

In a possible design, the first message includes service data adaptation protocol layer (service data adaptation protocol, SDAP) layer configuration information, and the first information may be included in the SDAP layer configuration information. Through the above design, the communication device can determine whether the PDU session transmits TSN packets according to the SDAP layer configuration information.

In a possible design, when the communication device processes the data packet transmitted by the first PDU session based on the first information, it may specifically transmit the data packet transmitted by the first PDU session to an Ethernet (Ethernet) module for processing. Through the above design, the communication device can transmit to the Ethernet module for processing after determining that the received data packet is a TSN packet, so that the processed TSN packet can be wirelessly sent to the TSN end node.

In a possible design, before the communication device receives the first message sent by the wireless access network device, the second message may be sent to the core network device through the wireless access network device, and the second message is used to request to establish or modify the first message. A PDU session. In the above design, the communication device sends a second message to the core network device to request the core network device to modify or establish the first PDU session.

In a possible design, the first message may be a radio resource control (radio resource control, RRC) reconfiguration message.

In a second aspect, the method for supporting a time-sensitive network provided by an embodiment of the present application includes: a radio access network device receives a first message sent by a core network device, the first message carries first information, and the first information is used to indicate the first message. The data packet transmitted by the PDU session is a TSN packet; the radio access network device sends a second message to the communication device, the first message carries second information, and the second information is used to characterize that the data packet transmitted by the first PDU session is a TSN packet. In the embodiment of this application, the wireless access network device is instructed by the core network device, so that the wireless access network device can instruct the communication device to let the communication device know whether the data packet transmitted by the first PDU session is a TSN packet, so that the communication device can TSN packets are treated differently from other business data packets.

In a possible design, the second information may be indicated by the type of the first PDU session. In the above design, the type of the first PDU session is used to indicate whether the data packet transmitted by the PDU session is a TSN packet, which can save signaling overhead.

In a possible design, the second information is indicated by the indication information carried in the second message. For example, the second message carries TSN-INDICATION, and the TSN-INDICATION may indicate the second information, that is, the TSN-INDICATION indicates the second message. The data packet transmitted in a PDU session is a TSN packet. In the above design, an indication message is used to indicate whether the data packet transmitted by the PDU session is a TSN packet, which can improve the flexibility of indication.

In a possible design, the second message may include SDAP layer configuration information, and the second information is included in the SDAP layer configuration information. Through the above design, the communication device can determine whether the PDU session transmits TSN packets according to the SDAP layer configuration information.

In a possible design, the first information may be indicated by the type of the first PDU session. In the above design, the core network device indicates whether the data packet transmitted by the PDU session is a TSN packet through the type of the first PDU session, which can save signaling overhead.

In a possible design, before the radio access network device receives the first message sent by the core network device, it may receive a third message sent by the communication device. The third message is used to request the establishment or modification of the first PDU session, and The third message is forwarded to the core network device. In the above design, the radio access network device can request the core network device to establish or modify the first PDU session by forwarding the third message of the communication device.

In one possible design, the second message may be an RRC reconfiguration message.

In a possible design, the first message may be a PDU session resource establishment request or a PDU session resource modification request.

In a third aspect, the method for supporting a time-sensitive network provided by an embodiment of the present application includes: the core network device determines that the data packet transmitted by the first PDU session is a TSN packet; the core network device sends the first message to the radio access network device, and A message carries first information, and the first information is used to indicate that the data packet transmitted by the first PDU session is a TSN packet. In the embodiment of the present application, the core network device instructs the wireless access network device, so that the wireless access network device can learn whether the data packet transmitted by the PDU session is a TSN packet, so that the TSN packet can be treated differently from other service data packets.

In a possible design, before the core network device determines that the data packet transmitted by the first PDU session is a TSN packet, it may receive a second message sent by the communication device through the wireless access network device, and the second message is used to request establishment or Modify the first PDU session. In the above design, the core network device establishes or modifies the first PDU session for the communication device after receiving the second message from the communication device.

In a fourth aspect, the method for supporting a time-sensitive network provided by an embodiment of the present application includes: a communication device receives a first message sent by a radio access network device, the first message carries first information, and the first information is used to characterize the first data The data packet transmitted by the radio bearer is a TSN packet; the communication device processes the data packet transmitted by the first data radio bearer based on the first information. In the embodiment of the present application, the wireless access network device instructs the communication device to let the communication device know whether the data packet transmitted by the first data radio bearer is a TSN packet, so that the communication device can treat the TSN packet differently from other service data packets.

In a possible design, when the communication device processes the data packet transmitted by the first data radio bearer based on the first information, it may transmit the data packet transmitted by the first data radio bearer to the Ethernet module for processing. Through the above design, the communication device can transmit to the Ethernet module for processing after determining that the received data packet is a TSN packet, so that the processed TSN packet can be wirelessly sent to the TSN end node.

In a possible design, before the communication device receives the first message sent by the radio access network device, it can also send a second message to the core network device through the radio access network device, and the second message is used to request establishment or modification The first PDU session. In the above design, the communication device sends a second message to the core network device to request the core network device to modify or establish the first PDU session.

In one possible design, the first message may be an RRC reconfiguration message.

In a fifth aspect, the method for supporting a time-sensitive network provided by an embodiment of the present application includes: a radio access network device receives a first message sent by a core network device, the first message carries first information, and the first information is used to indicate the first message. The quality of service (QoS) flow of the TSN packet transmitted in the PDU session; the radio access network device sends a second message to the communication device, the second message carries second information, and the second information is used to characterize the data packet transmitted by the first data radio bearer It is a TSN packet, where one or more QoS flows that transmit the TSN packet in the first PDU session are mapped to the first data radio bearer. In the embodiment of the present application, the core network device instructs the wireless access network device to transmit the QoS flow of the TSN packet in the first PDU session, so that after the wireless access network device maps the QoS flow of the first PDU session to the data radio bearer, The communication device can be instructed which data packets transmitted by the data radio bearer are TSN packets, so that the communication device can treat the TSN packets differently from other service data packets.

In a possible design, before receiving the first information sent by the core network device, the radio access network device may also receive a second message sent by the communication device, where the second message is used to request the establishment or modification of the first PDU session; And forward the second message to the core network device. In the above design, the radio access network device can request the core network device to establish or modify the first PDU session by forwarding the third message of the communication device.

In a sixth aspect, the method for supporting a time-sensitive network provided by an embodiment of the present application includes: a core network device determines a QoS flow for transmitting a TSN packet in a first PDU session; the core network device sends a first message to the radio access network device, and A message carries first information, and the first information is used to indicate the QoS flow for transmitting the TSN packet in the first PDU session. In the embodiment of the present application, the core network device instructs the wireless access network device to transmit the QoS flow of the TSN packet in the first PDU session, so that the wireless access network device can learn which QoS flow data packets are transmitted as TSN packets, thereby There is a distinction between transmitting only TSN packets and transmitting other service data packets.

In a possible design, the core network device may receive a second message sent by the communication device through the radio access network device before determining the QoS flow of the TSN packet transmitted in the first PDU session, and the second message is used to request establishment or modification The first PDU session. In the above design, the core network device establishes or modifies the first PDU session for the communication device after receiving the second message from the communication device.

In a seventh aspect, the method for supporting a time-sensitive network provided by an embodiment of the present application includes: a communication device receiving a data packet sent by a radio access network device, wherein the data packet carries a TSN indicator, and the TSN indicator is used to indicate the data packet It is a TSN packet. The communication device transmits the data packet to the Ethernet module for processing.

In a possible design, the TSN indication can be carried in the adaptation layer header of the data packet or the MAC header of the data packet.

In an eighth aspect, the method for supporting a time-sensitive network provided by an embodiment of the present application includes: a radio access network receives a data packet sent by a core network device, the data packet carries a TSN indicator, and the TSN indicator is used to indicate that the data packet is a TSN Data packet; the wireless access network device forwards the data packet to the communication device.

In a ninth aspect, the method for supporting a time-sensitive network provided by an embodiment of the present application includes: a core network device receives a data packet sent by a server; the core network device determines that the data packet is a TSN data packet; and the core network device is in the data packet Carry the TSN indication, and send the data packet carrying the TSN indication to the radio access network device.

In a tenth aspect, the method for supporting a time-sensitive network provided by an embodiment of the present application includes: a communication device receives first information sent by a radio access network device and a QFI list corresponding to at least one DRB, wherein the QFI list corresponding to the DRB includes The identification of each QoS flow mapped to the DRB, and the first information is used to indicate the QoS flow for transmitting the TSN data packet in the first PDU session. The communication device receives the data packet sent by the wireless access network device, and the data packet carries the QFI parameter. The communication device determines whether the data packet is a TSN packet based on the QFI parameter carried in the data packet.

In a possible design, the communication device can transmit the data packet to the Ethernet module for processing when determining that the data packet is a TSN packet.

In a possible design, the first information may include indication information corresponding to each QoS flow of the first PDU session, where the indication information corresponding to the QoS flow is used to indicate whether the QoS flow transmits TSN packets.

In a possible design, the first information may include respective indication information corresponding to the QoS flows that transmit the TSN data packet in the first PDU session, where the indication information corresponding to the QoS flow is used to indicate that the QoS flow transmits the TSN packet.

In a possible design, the first information may include respective indication information corresponding to QoS flows that do not transmit TSN data packets in the first PDU session, where the indication information corresponding to the QoS flow is used to indicate that the QoS flow does not transmit TSN packets .

In an eleventh aspect, the method for supporting a time-sensitive network provided by an embodiment of the present application includes: a radio access network device receives first information sent by a core network device, and the first information is used to indicate the transmission of the TSN packet in the first PDU session QoS flow. The radio access network device maps each QoS flow of the first PDU session to the DRB, and sends the first information and the QFI list corresponding to at least one DRB to the communication device, where the QFI list corresponding to the DRB includes each DRB mapped to the DRB. The identifier of the QoS flow. The wireless access network device sends a data packet to the communication device, and the data packet carries QFI parameters.

In a twelfth aspect, the method for supporting a time-sensitive network provided by an embodiment of the present application includes: a core network device determines whether each QoS flow of the first PDU session transmits a TSN packet. The core network device sends the first information to the radio access network device, where the first information is used to indicate the QoS flow for transmitting the TSN packet in the first PDU session.

In a thirteenth aspect, the present application provides a device for supporting a time-sensitive network. The device may be a device used for communication, or a chip or chip set in a device used for communication, where the device used for communication may be It is a communication device, a wireless access network device, or a core network device. The device may include a processing unit and a transceiving unit. When the device is a device for communication, the processing unit may be a processor, and the transceiving unit may be a communication interface; the device may also include a storage unit, and the storage unit may be a memory; the storage unit is used to store instructions, The processing unit executes the instructions stored in the storage unit, so that the communication device executes the corresponding functions in the first, fourth, seventh, and tenth aspects, or causes the wireless access network device to execute the second Aspect, the fifth aspect, the eighth aspect, and the eleventh aspect, or enable the core network device to perform the corresponding function in the third aspect, sixth aspect, ninth aspect, and twelfth aspect. When the device is a chip or chipset in a communication device, the processing unit may be a processor, and the transceiving unit may be an input/output interface, a pin or a circuit, etc.; the processing unit executes what is stored in the storage unit Instructions to enable the communication device to perform the corresponding functions in the first, fourth, seventh, and tenth aspects above, or to enable the radio access network device to perform the second, fifth, eighth, or Corresponding functions in the eleventh aspect, or enable the core network device to perform the corresponding functions in the third, sixth, ninth, and twelfth aspects mentioned above. The storage unit may be a storage unit (for example, register, cache, etc.) in the chip or chipset, or a storage unit (for example, read-only memory, random access memory, etc.) located outside the chip or chipset in a communication device. Memory, etc.).

In a fourteenth aspect, the present application also provides a computer-readable storage medium, which includes instructions, which when run on a computer, causes the computer to execute the methods described in the foregoing aspects.

In the fifteenth aspect, the present application also provides a computer program product including instructions, which when executed, causes the methods described in the above aspects to be executed.

In a sixteenth aspect, the present application provides a chip, which includes a processor and a communication interface, where the communication interface is used to receive code instructions and transmit them to the processor. The processor is configured to invoke the code instructions transmitted by the communication interface to execute the methods described in the foregoing aspects.

In a seventeenth aspect, the present application provides a communication system that includes a communication device, a radio access network device, and a core network device. The communication device is used to perform the first, fourth, and seventh aspects above. , The corresponding functions in the tenth aspect, the radio access network equipment is used to perform the corresponding functions in the second, fifth, eighth, and eleventh aspects, and the core network equipment is used to perform the third aspect, Corresponding functions in the sixth, ninth, and twelfth aspects.

Description of the drawings

FIG. 1 is a schematic diagram of the architecture of a communication system provided by this application;

Figure 2 is a schematic diagram of a 5G RAN supporting TSN method provided by this application;

3A is a schematic diagram of a protocol layer for processing TSN packets provided by this application;

FIG. 3B is a schematic diagram of a protocol layer for processing service data packets provided by this application;

Figure 4 is a schematic diagram of a Node-X processing data packet provided by this application;

FIG. 5 is a schematic flowchart of a method for supporting a time-sensitive network provided by this application;

Figure 6 is a schematic diagram of mapping QoS flow to DRB provided by this application;

FIG. 7 is a schematic structural diagram of a device supporting a time-sensitive network provided by this application;

FIG. 8 is a schematic structural diagram of another device supporting a time-sensitive network provided by this application;

FIG. 9 is a schematic structural diagram of another device supporting a time-sensitive network provided by this application;

FIG. 10 is a schematic structural diagram of another device supporting a time-sensitive network provided by this application.

Detailed ways

To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention.

The method for supporting TSN provided in this application can be applied to a communication system supporting TSN. The architecture of the communication system may be as shown in Figure 1, including a wireless access network device 101 and a communication device 102, and may also include a core network device 103, where the communication device 102 can be connected to the TSN end node, and the core network device 103 can be connected to the TSN system. The communication system involved in the embodiments of this application may be various communication systems, for example, it may be a long term evolution (LTE), a fifth generation (5G) communication system, or a general terrestrial wireless access ( universal terrestrial radio access (UTRA), evolved UTRA (E-UTRAN), new radio technology (new radio, NR), GSM/EDGE radio access network-circuit switched domain (GSM EDGE radio access network-circuit switched, GERAN- CS), GSM/EDGE radio access network-data exchange domain (GSM EDGE radio access network-packet switched, GERAN-PS), code division multiple access (code division multiple access, CDMA) 2000-1XRTT, and multiple radio access Technology dual connectivity (Multi-RAT Dual-Connectivity, MR-DC), etc., can also be a hybrid architecture of multiple communication systems, such as a hybrid architecture of LTE and 5G.

Among them, the radio access network device 101 may be a common base station (such as Node B or eNB), may be a new radio controller (NR controller), or gNode B (gNB) or en in a 5G system. -gNB, it can be a centralized network element (centralized unit), it can be a new wireless base station, it can be a remote radio module, it can be a micro base station, it can be a relay (relay), it can be a distributed unit (distributed unit) , May be a reception point (transmission reception point, TRP) or transmission point (transmission point, TP) or any other wireless access device, but the embodiment of the present application is not limited thereto.

The communication device 102 may be a terminal device, or a relay site such as a customer premise equipment (CPE), or the communication device 102 may also be a function of a base station. Among them, terminal equipment is also called user equipment (UE), which is a device that provides voice and/or data connectivity to users, such as handheld devices and vehicle-mounted devices with wireless connection functions. Common terminals include, for example, mobile phones, tablet computers, notebook computers, palmtop computers, mobile internet devices (MID), wearable devices, such as smart watches, smart bracelets, and pedometers. For ease of description, the embodiment of the present application collectively refers to the communication device 102 as Node-X.

The core network device 103 may be a mobility management entity (mobility management entity, MME), a service gateway (serving gateway, SGW), or an access management function (Access and Management Function, AMF) in the 5G system, For user plane functions (UPF) and so on, the core network device may provide further network connections, such as a telephone network and/or a data communication network (such as the Internet). The base station can be connected to the core network equipment through a link (for example, an S1 or NG interface).

If the communication system supports the TSN scenario, the TSN system can send timing information to the TSN endpoint through the communication network to achieve the purpose of clock synchronization at the TSN endpoint in the same time domain. Generally speaking, it is in the TSN system. The clock time of each node is the same.

5G RAN can support TSN through a transparent clock. As shown in Figure 2, the TSN system sends TSN packets, such as PTP messages, to 5G network devices (such as UPF). Among them, PTP messages are used to provide public accurate timing information for implementation. Deterministic business transmission. The following takes the PTP message as an example to explain how 5G RAN supports TSN. The TSN system sends PTP messages to 5G network devices (such as UPF), and UPF records the time of receiving the PTP message, that is, the ingress time (ingress time) t0, and adds the correction item CorrectionField=x to the PTP message, and the correction item is used for the TSN end node Revise timing information. UPF sends the modified PTP message to the 5G UE through the 5G system, and also sends the ingress time t0 to the 5G UE. The ingress time t0 can be sent together with the PTP message, or sent separately. After the 5G UE receives the PTP message and the ingress time t0, the two pieces of information are transmitted to the Ethernet Module for processing, where the Ethernet Module can be a functional unit in the 5G UE. Ethernet Module adjusts the CorrectionField=x in the PTP message to CorrectionField=x+t1-t0 and sends it to the TSN endpoint, where t1 is the time when the Ethernet Module sends the PTP message, and t1-t0 enters the 5G system (that is, the 5G network system receives The transmission delay between the time of the PTP message) and the egress 5G system (that is, the time when the Ethernet Module sends the PTP message to the TSN end node). The Ethernet Module finally sends the PTP message to the TSN end node at the egress time (egress time) t1. 5G UE and TSN end nodes adopt wired connection.

At present, it can be considered to introduce an intermediate node Node-X (ie the communication device 102) between the radio access network equipment and the TSN end node. Node-X can be a terminal device, a relay station, or a radio access network. A function of the device and so on. Node-X is a 5G UE for radio access network equipment, and the Node-X and TSN end nodes are connected wirelessly. Node-X can help TSN end nodes to communicate with wireless access network equipment through L2relay. Exemplarily, FIG. 3A and FIG. 3B respectively show a possible terminal-to-network relay function (UE-to-Network Relay) user plane protocol stack, where L2relay between the UE (such as Node-X) and the UE It can communicate via sidelinks, where the UE can include the functions of 5G UE and the functions of TSN UE (also known as TSN end node). When Node-X transmits service data packets (such as mobile network service data packets) When the UE has the function of 5G UE, when Node-X transmits TSN packet, the UE has the function of TSN end node.

According to the protocol layer shown in Figure 3A, when the radio access network device forwards the TSN packet to the UE through Node-X (the UE is equivalent to the TSN end node), Node-X needs to pass the TSN packet through the physical (physical, PHY ) Layer -> media access control (MAC) layer -> radio link layer control protocol (radio link control, RLC) layer -> adaptation layer Adaptation Layer and other protocol layers for processing, and after each protocol After processing, the layer transmits the processed PTP message to the Ethernet module for processing, and then sends the PTP message processed by the Ethernet module to the TSN end node wirelessly. The wireless access network device sends TSN packets or service data packets to Node-X through unicast, where the TSN packets are not encrypted, and the service data packets are encrypted. If the TSN packet has a packet data convergence protocol (PDCP) layer, the radio access network device needs to inform the Node-X TSN end node of the data radio bearer (DRB)/logical channel identifier (logical channel) ID, LCID) corresponds to the PDCP serial number (serial number, SN) how many bits (bits), so that Node-X removes the PDCP header to obtain the Ethernet packet.

According to the protocol layer shown in Figure 3B, when the radio access network device sends service data packets (such as mobile network service data packets) to the UE through Node-X (the UE is equivalent to 5G UE), Node-X does not need to The service data packet is sent to the Ethernet module and then forwarded to the 5G UE. It only needs to transmit the service data packet to the adaptation layer and then forward it through the side link (for example, L2 relay, Node-X can pass the service data packet through the PHY layer/ MAC layer/RLC layer/adaptation layer post-processing and forwarding. When forwarding, it is necessary to encapsulate the protocol layer header between Node-X and the terminal device outside the service data, such as encapsulating RLC layer header, MAC layer header and PHY layer header. Then forward), as shown in Figure 4. Therefore, for Node-X, how to identify TSN packets and service data packets is a continuing problem.

It should be noted that the Ethernet module and Node-X can be in the same physical entity. For example, Node-X has an Ethernet protocol layer. Or, Ethernet module and Node-X can also be in different physical entities, Node-X and Ethernet module can be connected through a wired interface, for example, Ethernet module is the inventory controller in the factory, and the controller is inserted to support the Node-X function The card can realize the integration of Node-X and Ethernet module.

Based on this, this application provides a method and device for supporting a time-sensitive network to solve the problem that Node-X cannot identify TSN packets and service data packets in the prior art. Among them, the method and the device are based on the same inventive concept. Since the principles of the method and the device to solve the problem are similar, the implementation of the device and the method can be referred to each other, and the repetition will not be repeated.

The embodiments of the present application will be described in detail below in conjunction with the drawings.

Embodiment 1: The data packets transmitted in the first PDU session mentioned in Embodiment 1 are all TSN packets.

The method for supporting a time-sensitive network provided in the first embodiment may be shown in FIG. 5, and the method may be applied to the communication system shown in FIG. The method specifically includes:

S501: The core network device determines that a data packet transmitted by a first protocol data unit (PDU) session is a TSN packet.

In specific implementation, before step S501, Node-X may send a second message to the core network device through the radio access network device, and the second message is used to request the establishment or modification of the first PDU session. After receiving the second message sent by Node-X, the radio access network device forwards the second message to the core network device.

In some implementations, the second message may be sent by Node-X to establish or modify a PDU session for itself.

In other embodiments, the message requesting the establishment or modification of the PDU session may also be sent by the Node-X when establishing or modifying the PDU session for the TSN end node, that is, the second message may be that the TSN end node sends the message to the TSN end node through Node-X. Sent by the core network equipment.

S502: The core network device sends first information to the radio access network device, where the first information is used to indicate that the data packet transmitted by the first PDU session is a TSN packet. Correspondingly, the wireless access network device receives the first information.

In specific implementation, the core network device can send the first information to the radio access network device through a third message. The third message can be a PDU Session Resource Setup Request message or a PDU Session Resource Modification Request (PDU Session Resource Setup Request) message. The Resource Modify Request message may carry the first information in the PDU Session Resource Setup Request/PDU Session Resource Modify Request message. Therefore, the radio access network device performs the above-mentioned signaling interaction with the core network device AMF, and establishes the user plane tunnel corresponding to the PDU session with the core network device UPF, that is, the general packet radio service (GPRS) tunnel protocol user Surface (GPRS tunneling protocol for user plane, GTP-U). Among them, the interface between the radio access network device and the UPF can be called an NG3 interface. It should be understood that in the embodiments of the present application, the third message is only an exemplary description, and does not specifically limit the message carrying the first information. In specific implementation, the core network device may also send the first information through other messages. There is no specific limitation here.

S503: The radio access network device sends a first message to Node-X, where the first message carries second information, and the second information is used to characterize that the data packet transmitted by the first PDU session is a TSN packet. Correspondingly, Node-X can receive the first message sent by the radio access network device.

Here, the first message is only an example. The first message may be named differently in different systems. For example, in an NR system, the first message may be radio resource control (RRC) reconfiguration (RRC). Reconfiguration) message. In the LTE system, the first message can be called RRC Connection Reconfiguration (RRC Connection Reconfiguration) message. In future communication systems, the first message can also be named other, such as message A. If message A can achieve the first For the function of a message, the A message can also be understood as the first message in Embodiment 1 of the application, and the first message is not specifically limited here.

S504. The Node-X processes the data packet transmitted in the first PDU session based on the second information.

For example, Node-X can transmit the data packet transmitted in the first PDU session to an Ethernet module for processing.

Specifically, if it is a TSN packet, Node-X can send the TSN packet to the Ethernet module and process it through the Ethernet module (for example, modify the CorrectionField to x+t1-t0). Then according to the identification of the TSN end node given by the radio access network device at the adaptation layer and the corresponding sidelink radio bearer (SL-RB) identification or SL logical channel identification (logical channel identity, LCID), The TSN packet is sent to the corresponding TSN end node through the corresponding channel of the side link.

In the embodiment of this application, the core network equipment=>radio access network equipment=>Node-X instruction allows Node-X to know whether the data packet transmitted by the PDU session is a TSN packet, so that the TSN packet and other service data packets Treat them differently.

In specific implementation, a user plane tunnel corresponding to the PDU session can be established between the radio access network device and the core network device (such as UPF) for Node-X. Specifically, the core network device (such as AMF) and wireless access Information exchange between network devices in order to establish a user plane tunnel between the radio access network device and the UPF. The user plane tunnel corresponding to the PDU session transmits QoS flows with different QoS attributes. One or more QoS flows with the same or similar QoS attributes can be mapped to a DRB by the radio access network device. For example, as shown in Figure 6, QoS flow1 and QoS flow2 of the PDU session are mapped to DRB1, QoS flow3 and QoS flow4 are mapped to DRB2, and QoS flow5, QoS flow6 and QoS flow7 are mapped to DRB3. Among them, the PDU session can share a SDAP entity, and the SDAP entity can be responsible for mapping different QoS flows to different DRBs.

The core network device can indicate whether the PDU session type of the radio access network device is IPv4, IPv6 or ethernet through the PDU Session Type cell. The description of the PDU Session Type cell in TS 23.501 is shown in Table 1.

Table 1

In one implementation, the TSN indication can be introduced in the PDU session type, that is, the TSN type is added to the enumerated type of the PDU Session Type cell, where, when the PDU Session Type cell indicates the TSN type, the PDU session contains TSN package. In the first embodiment, the PDU session type is used to indicate whether the PDU session transmits TSN packets. When the PDU session type indicates that the PDU session transmits TSN packets, all data packets transmitted by the PDU session are TSN packets.

That is, the first information may be indicated by the type of the first PDU session.

In an exemplary description, the TSN type can be represented by the value TSN, that is, the PDU Session Type can be represented as:

PDU Session Type ENUMERATED{Ipv4, Ipv6, Ipv4v6, Ethernet, TSN,...}.

In another exemplary description, the existing value of ether can be replaced with Ethernet-TSN and Ethernet-other, where Ethernet-TSN represents the TSN type, that is, PDU Session Type can be expressed as:

PDU Session Type ENUMERATED{Ipv4, Ipv6, Ipv4v 6, Etherne-other, Etherne-TSN,...}.

Of course, in specific implementations, the TSN type can also be indicated in other ways, which is not specifically limited here.

In some embodiments, the second information may also be indicated by the type of the first PDU session. For example, you can add the PDU-Session-Type information element in the SDAP configuration information element in the RRC reconfiguration message, namely SDAP-Config, and introduce the TSN indication in the PDU-Session-Type, that is, in the PDU-Session-Type information element The TSN type is added to the enumeration type. When the PDU-Session-Type cell indicates the TSN type, it means that all QoS flows of the PDU session transmit TSN packets.

Exemplarily, the TSN type can be represented by the value TSN, that is, the PDU-Session-Type can be represented as:

PDU-Session-Type ENUMERATED{Ipv4, Ipv6, Ipv4v6, Ethernet, TSN,...}.

Or, you can replace the existing value of ether with Ethernet-TSN and Ethernet-other, where Ethernet-TSN represents the TSN type, that is, PDU-Session-Type can be expressed as:

PDU-Session-Type ENUMERATED{Ipv4, Ipv6, Ipv4v6, Etherne-other, Etherne-TSN,...}.

In other embodiments, the second information may also be indication information (TSN-indication) corresponding to the PDU session, and the TSN-indication corresponding to the PDU session is used to indicate whether the data packet transmitted by the PDU session is a TSN packet. That is, the TSN-indication of the PDU session is added to the first message to indicate whether the PDU session transmits TSN packets. For example, a TSN-indication information element is added to the SDAP configuration information element in the RRC reconfiguration message, that is, SDAP-Config.

Specifically, the TSN-indication corresponding to the PDU session can be indicated by taking different values. For example, the value of TSN-indication can be 1/0 to indicate whether the data packet transmitted by the PDU session is a TSN packet, for example, When the value of TSN-indication is 1, it may indicate that the data packet transmitted by the PDU session is a TSN packet, and when the TSN-indication is 0, it may indicate that the data packet transmitted by the PDU session is not a TSN packet. Of course, when the value of TSN-indication is 0, it may also indicate that the data packet transmitted by the PDU session is a TSN packet, and when the value of TSN-indication is 1, it indicates that the data packet transmitted by the PDU session is not a TSN packet. Or, it can indicate whether the data packet transmitted by the PDU session is a TSN packet through TSN-indication being true/false. For example, when the value of TSN-indication is true, it can indicate that the data packet transmitted by the PDU session is a TSN packet, and TSN- When the value of indication is false, it can indicate that the data packet transmitted by the PDU session is not a TSN packet.

The TSN-indication corresponding to the PDU session can also be a conditional cell. For example, the corresponding TSN-indication can be configured only when the PDU session transmits TSN packets, and the TSN-indication is not configured when the PDU session does not transmit TSN packets. Therefore, when When the TSN-indication of the PDU session is included in the first message, it may indicate that the data packet transmitted by the PDU session is a TSN packet. Or, the PDU session will correspond to TSN-indication only when the TSN packet is not transmitted, and there is no TSN-indication when the PDU session transmits the TSN packet. Therefore, when the first message includes the TSN-indication of the PDU session, it can indicate that the PDU session transmits The data packet is not a TSN packet. Exemplarily, the condition information element TSN-indicatio only includes the value "true" or only the value "false".

As a possible implementation manner, the first message may include SDAP layer configuration information (SDAP-Config), and the second information may be included in SDAP-Config.

Exemplarily, SDAP-Config includes PDU-Session-Type, and the enumerated type of PDU-Session-Type may include Ipv4, Ipv6, Ipv4v6, Ethernet, and TSN, where, when PDU-Session-Type is TSN, It can mean that the PDU session transmits TSN packets. The content of SDAP-Config can specifically include:

Exemplarily, the SDAP-Config may include the TSN indicator of the PDU, and the TSN indicator of the PDU session uses a value of 0/1 to indicate whether the PDU session transmits TSN packets. The content of the SDAP-Config may specifically include:

Therefore, the communication device can learn whether the PDU session transmits TSN packets according to the PDU-Session-Type or TSN-indication contained in the SDAP-Config.

Further, the first message may also include the mapping relationship between the DRB identifier and the PDU session. For example, the DRB-Identity in the radio bearer configuration (RadioBearerConfig) has a corresponding SDAP-Config, so that the Node-X can obtain the DRB and PDU session or SDAP- Config mapping relationship. Therefore, in the end, Node-X can know which DRB came from the TSN packet.

Second embodiment: In the second embodiment, the data packets transmitted by the first PDU session are not all TSN packets, and the data packets transmitted by at least one QoS flow of the first PDU session are all TSN. In the second embodiment, the QoS flow that only transmits TSN packets and the QoS flow that transmits service packets are respectively mapped to different DRBs. The first DRB maps one or more QoS flows that only transmit TSN packets in the first PDU session. The first DRB The transmitted data packets are all TSN packets. The method for supporting a time-sensitive network provided in the second embodiment may include:

S1: The core network device determines the quality of service QoS flow for transmitting the TSN packet in the first protocol data unit PDU session.

In specific implementation, before step S1, Node-X may send a second message to the core network device through the radio access network device, and the second message is used to request the establishment or modification of the first PDU session. After receiving the second message sent by Node-X, the radio access network device forwards the second message to the core network device.

S2: The core network device sends first information to the radio access network device, where the first information is used to indicate the quality of service QoS flow for transmitting the TSN packet in the first PDU session. Correspondingly, the wireless access network device receives the first information.

In specific implementation, the core network device may send the first information to the radio access network device through a third message. The third message may be a PDU Session Resource Setup request message or a PDU Session Resource Modify Request message, that is, it may be displayed in the PDU Session Resource Setup/ The PDU Session Resource Modify request message carries the first information. Therefore, the radio access network device establishes a GTP-U corresponding to the PDU session with the core network device AMF through the aforementioned signaling interaction with the core network device UPF. Among them, the interface between the radio access network device and the UPF can be called an NG3 interface. It should be understood that in the embodiments of the present application, the third message is only an exemplary description, and does not specifically limit the message carrying the first information. In specific implementation, the core network device may also send the first information through other messages. There is no specific limitation here.

S3. The radio access network device sends a first message to the communication device, the first message carries second information, and the second information is used to characterize that the data packet transmitted by the first data radio bearer is a TSN packet, where one of the first PDU sessions Or multiple QoS flows of transmitting TSN packets are mapped to the first data radio bearer. Correspondingly, Node-X receives the first message.

Here, the first message is only an exemplary description. The first message may be named differently in different systems. For example, in an NR system, the first message may be an RRC Reconfiguration message. In an LTE system, The first message may be called an RRC Connection Reconfiguration message. In the future communication system, the first message may also be named other, such as A message. If A message can realize the function of the first message, A The message is understood to be the first message in Embodiment 1 of this application, and the first message is not specifically limited here.

S4: Node-X processes the data packet transmitted by the first DRB based on the first information.

For example, Node-X can transmit the data packet transmitted by the first DRB to the Ethernet module for processing.

Specifically, if it is a TSN packet, Node-X can send the TSN packet to the Ethernet module and process it through the Ethernet module (for example, modify the CorrectionField to x+t1-t0). Then, according to the identification of the TSN end node and the corresponding SL-RB identification or LCID given by the radio access network device at the adaptation layer, the TSN packet is sent to the corresponding TSN end node through the corresponding channel of the side link.

In the embodiment of this application, the core network equipment=>radio access network equipment=>Node-X instruction allows Node-X to know which DRB transmitted data packets are TSN packets, so that TSN packets and other service data packets can be processed Discrimination. In an implementation manner, the first information may be specifically used to indicate the QoS flow of the TSN packet transmitted in the first PDU session, that is, the core network device may indicate which QoS flow of the radio access network device can transmit the TSN packet.

Specifically, the first information may include indication information corresponding to each QoS flow of the first PDU session, and the indication information corresponding to the QoS flow is used to indicate whether the data packet transmitted by the QoS flow is a TSN packet. The indication information corresponding to the QoS flow can be indicated by taking different values. For example, the value of the indication information can be 1/0 to indicate whether the data packet transmitted by the QoS stream is a TSN packet. For example, the value of the indication information is When it is 1, it can indicate that the data packet transmitted by QoS streaming is a TSN packet, and when the value of the indication information is 0, it can indicate that the data packet transmitted by QoS streaming is not a TSN packet. Of course, when the value of the indication information is 0, it may also indicate that the data packet transmitted by the QoS stream is a TSN packet, and when the value of the indication information is 1, it indicates that the data packet transmitted by the QoS stream is not a TSN packet. Alternatively, the indication information can be true/false to indicate whether the data packet transmitted by the QoS stream is a TSN packet. For example, when the value of the indication information is true, it can indicate that the data packet transmitted by the QoS stream is a TSN packet, and the value of the indication information is When it is false, it can indicate that the data packet transmitted by the QoS stream is not a TSN packet.

Alternatively, the first information may include indication information corresponding to the QoS flow that transmits the TSN packet, or includes indication information corresponding to the QoS flow that does not transmit the TSN packet, that is, the indication information corresponding to the QoS flow may be a condition cell, for example, only transmission The QoS flow of the TSN packet corresponds to the indication information, and the QoS flow that does not transmit the TSN packet has no indication information. Therefore, when the first information includes the indication information of a QoS flow, it can indicate that the data packet transmitted by the QoS flow is a TSN packet. . Or, only the QoS flow that does not transmit TSN packets will correspond to the indication information, and the QoS flow that transmits TSN packets has no indication information. Therefore, when the first information does not include the indication information of a QoS flow, it can indicate that the QoS flow is transmitted. The data packet is a TSN packet. Exemplarily, when the indication information is true/false to indicate whether the data packet transmitted by the QoS stream is a TSN packet, the indication information may only appear when the value is true, or it may be indicated only when the value is false The information just appeared.

Taking the PDU Session Resource Setup Request message as an example, the TSN indicator corresponding to QoS can be added to the PDU Session Resource Setup Request message to indicate whether the data packet transmitted by the QoS stream is a TSN packet. Further, a TSN indicator corresponding to QoS can be added to the PDU Session Resource Setup Transfer cell of the PDU Session Resource Setup Request message. Exemplarily, the content included in the PDU Session Resource Setup Transfer cell may be as shown in Table 2.

Table 2

Further, after receiving the first information sent by the core network device, the radio access network device may map the QoS flow for transmitting TSN packets and other QoS flows for not transmitting TSN packets to different DRBs. Therefore, the radio access network device may add a TSN indication to the DRB in the first message (such as the RRC reconfiguration message) to the Node-X, so that the Node-X can subsequently distinguish and differentiate processing.

In some embodiments, the second information may also be indication information corresponding to the first DRB, and the indication information corresponding to the first DRB is used to indicate that the data packet transmitted by the first DRB is a TSN packet. That is, the second information may be indication information of DRB granularity. Specifically, the indication information corresponding to the DRB may be indicated by taking different values, or the indication information corresponding to the DRB stream may also be a condition information element, for example, the TSN-indicator appears when the value is true.

In specific implementation, the TSN-indicator corresponding to the DRB may be added to the DRB-related configuration information (such as DRB-ToAddMod) in the first message. Taking DRB-ToAddMod as an example, TSN-indicator can be added to DRB-ToAddMod, where TSN-indicator can be a conditional cell, such as TSN-indicator when the value is true, or TSN-indicator can be different Value mode is indicated, the DRB-ToAddMod cell can include:

Embodiment 3: In Embodiment 3, the data packets transmitted by the first PDU session are not all TSN packets, and the data packets transmitted by at least one QoS flow of the first PDU session are all TSN. In the third embodiment, the QoS flow that only transmits TSN packets and the QoS flow that transmits service packets can be mapped to the same DRB, that is, the data packets transmitted by the DRB may include TSN packets or service packets. The method for supporting time-sensitive networks provided in the third embodiment may include:

A1, Node-X can send a message requesting the establishment or modification of a PDU session to the core network device through the radio access network device. The radio access network device receives the message sent by Node-X and forwards it to the core network device. The radio access network device performs signaling interaction with the core network device AMF, and establishes a user plane tunnel corresponding to the PDU session with the core network device UPF.

In some implementations, the message requesting to establish or modify the PDU session may be sent when the Node-X establishes or modifies the PDU session for itself.

In other embodiments, the message requesting to establish or modify the PDU session may also be sent by Node-X when establishing or modifying the PDU session for the TSN end node, that is, the message requesting to establish or modify the PDU session may be the TSN end node. Sent to core network equipment through Node-X.

A2. The core network device indicates whether the data packet transmitted by each QoS flow of the PDU session of the radio access network device is a TSN packet.

A3, the radio access network device maps the QoS flow to the DRB.

Here, when the radio access network device maps the QoS flow to the DRB, it is not necessary to separately map the QoS flow that only transmits TSN packets and the QoS flow that transmits service packets, that is, the QoS flow that only transmits TSN packets and the QoS flow that transmits service packets. It can be mapped to the same DRB or different DRBs, and there is no specific limitation here.

For example, the radio access network device can determine which DRB to map to according to the attributes, parameters, and requirements of the QoS flow.

A4: The radio access network device sends a QoS flow indicator (QFI) list corresponding to each DRB to Node-X, and indicates whether each QoS flow transmits TSN packets.

Specifically, the radio access network device can send the TSN-indication of each QoS flow to Node-X to indicate whether each QoS flow of the PDU session transmits TSN packets. Among them, the TSN-indication of the QoS flow can be determined by taking different values. Respectively indicate whether the QoS flow transmits TSN packets. For example, the value of TSN-indication can be 1/0 to indicate whether the data packet transmitted by QoS flow is a TSN packet. Illustratively, when the value of TSN-indication is 1, it can indicate that the data packet transmitted by QoS flow is a TSN packet. When TSN-indication is 0, it can indicate that the data packet transmitted by the QoS flow is not a TSN packet. Of course, when the value of TSN-indication is 0, it can also indicate that the data packet transmitted by QoS flow is a TSN packet, and when the value of TSN-indication is 1, it indicates that the data packet transmitted by QoS flow is not a TSN packet. Or, TSN-indication can be true/false to indicate whether the data packet transmitted by QoS flow is a TSN packet. For example, when the value of TSN-indication is true, it can indicate that the data packet transmitted by QoS flow is a TSN packet, and TSN- When the value of indication is false, it can indicate that the data packet transmitted by the QoS flow is not a TSN packet.

Alternatively, the radio access network device may send the TSN-indication of the QoS flow for transmitting the TSN packet to the Node-X to indicate whether each QoS flow of the PDU session transmits the TSN packet. That is, the TSN-indication of QoS flow is a conditional cell. For example, only when QoS flow transmits TSN packets will it correspond to TSN-indication, and when QoS flow does not transmit TSN packets, there is no TSN-indication. Therefore, when the radio access network When the device sends a TSN-indication of a certain QoS flow to Node-X, it can indicate that the data packet transmitted by the QoS flow is a TSN packet. Or, QoS flow does not correspond to TSN-indication when TSN packets are transmitted, and QoS flow does not have TSN-indication when TSN packets are transmitted. Therefore, when the radio access network device sends a TSN-indication of a certain QoS flow to Node-X, it can Indicates that the data packet transmitted by this QoS flow is not a TSN packet. Exemplarily, when the TSN-indication is true/false to indicate whether the data packet transmitted by the QoS flow is a TSN packet, the TSN-indication may only appear when the value is true.

A5. After Node-X receives the data packet from the wireless access network device, it reads the QFI parameter carried by the SDAP layer to determine whether the data packet is a TSN packet, and thus determines whether it needs to be sent to the Ethernet layer for processing.

The first to third embodiments described above are all that the radio access network device informs the Node-X data radio bearer whether to transmit TSN packets or whether to include a QoS flow for transmitting TSN packets through control plane signaling. The fourth embodiment below introduces a way in which UPF and radio access network equipment carry indication information through user plane data packets so that Node-X can distinguish between service packets and data packets. The indication information is used to indicate the information carried in the user plane data packet. Whether the payload is a TSN packet. This method can also be applied to the communication system shown in FIG. 1. The method for supporting time-sensitive networks provided by the fourth embodiment specifically includes:

The Node-X can send a message requesting the establishment or modification of the PDU session to the core network device through the radio access network device. The radio access network device receives the message sent by Node-X and forwards it to the core network device. Therefore, the radio access network device establishes a GTP-U tunnel corresponding to the PDU session with the core network device AMF through signaling interaction with the core network device UPF. Among them, the interface between the radio access network device and the UPF can be called an NG3 interface.

If the TSN packet and the service come from the same upper-layer device (such as a TSN server or a data network (DN)), after the UPF receives the data packet from the upper-layer device, it can read the Ethernet header of the data packet to determine whether the data packet is It is a TSN package. If it is a TSN packet, the UPF can add a TSN indicator to the GTP-U header of the NG3 interface of the data packet, so that the radio access network device can carry the TSN indicator when receiving the data packet to the Node-X, so that the Node-X X is followed by distinction and distinction processing. When the radio access network device sends a TSN packet to Node-X, it can use the TSN packet as a load, and encapsulate the adaptation layer header, RLC header, MAC header (sub-header), and PHY header. The encapsulated TSN packet can be called For data packets.

Therefore, as an example, the radio access network device may add a TSN indicator to the adaptation layer header of the data packet or add a TSN indicator to the MAC header (subheader). Subsequent Node-X can determine whether the payload of the data packet is a TSN packet by reading the adaptation layer header or the MAC header. The foregoing embodiments assume that the premise is that the wireless access network device sends the TSN packet to the terminal device in a unicast manner.

Another situation is that the wireless access network device sends a TSN packet to the Node-X and the terminal device through multicast. The wireless access network device includes the following information in the multicast channel: the mapping relationship between the TSN identifier and the multicast data channel or group identifier. Taking the existing single cell point to multi-point (SC-PTM) mechanism as an example, SIB20 is used to broadcast the single cell multicase control channel (SC-MCCH) configuration The information mainly includes repetition period (RP), offset (offset), first subframe (first-subframe), subframe duration (subframe duration), modification period (Modification Period, MP), etc. SC-MCCH is used to broadcast single cell multicast traffic channel (single cell multicast traffic channel, SC-MTCH) configuration information (SCPTM Configuration), mainly including temporary mobile group identity (temporary mobile group identity, TMGI) or at least the session identifier One is the corresponding relationship with the group radio network temporary identifier (G-RNTI), the discontinuous reception (DRX) parameters of each multicast data channel (multicast traffic channel, MTCH), etc. Here, we can include the correspondence between the TSN identifier and G-RNTI in the SCPTM Configuration. When the multicast data corresponding to the G-RNTI of the Node-X or the terminal device is subsequently determined, the multicast data can be determined to be a TSN packet. Node-X sends the TSN packet to the Ethernet module for processing and then forwards it through multicast. For example, when Node-X multicasts TSN packets, it can set the destination address contained in the MAC header of the TSN packet to G -RNTI. When the terminal device receives a data packet whose destination address is G-RNTI, it determines that the data packet is a TSN packet. One situation is that the terminal device can receive the G-RNTI and the corresponding TSN identifier sent by the base station.

Another situation is that Node-X can broadcast in advance to notify the terminal device of the mapping relationship between the G-RNTI and the TSN identifier.

Based on the same inventive concept as the method embodiment, an embodiment of the present application provides a device supporting a time-sensitive network. The structure of the device may be as shown in FIG. 7 and includes a processing unit 701 and a transceiver unit 702.

In one implementation, the device is specifically used to implement the functions of Node-X in the embodiments of Figures 2 to 6. The device can be Node-X itself, or a chip or chipset or chip in Node-X. Used to perform part of the related method function. Specifically, the transceiver unit 702 is configured to receive a first message sent by a radio access network device, the first message carries first information, and the first information is used to characterize that the data packet transmitted by the first PDU session is a TSN packet; the processing unit 701 , Used to process the data packet transmitted in the first PDU session based on the first information.

Exemplarily, the first information may be indicated by the type of the first PDU session. Alternatively, the first information may also be indicated by indication information carried in the first message.

Further, the first message may include SDAP layer configuration information, and the first information is included in the SDAP layer configuration information.

The processing unit 701, when processing the data packet transmitted by the first PDU session based on the first information, may be specifically configured to: transmit the data packet transmitted by the first PDU session to the Ethernet module for processing.

In addition, the transceiver unit 702 may also be used to: before receiving the first message sent by the wireless access network device, send a second message to the core network device through the wireless access network device, and the second message is used to request the establishment or modification of the first message. A PDU session.

Exemplarily, the first message is an RRC reconfiguration message.

In another implementation manner, the device is specifically used to implement the functions of the core network device in the embodiment of FIG. 2 to FIG. 6. The device can be the core network device itself, or the chip or chipset or chip in the core network device. Part of the function used to perform related methods. Specifically, the processing unit 701 is configured to determine that the data packet transmitted by the first PDU session is a TSN packet; the transceiving unit 702 is configured to send a first message to the radio access network device, the first message carrying first information, The data packet used to indicate the transmission of the first PDU session is a TSN packet.

The transceiving unit 702 may be further configured to: before the processing unit 701 determines that the data packet transmitted by the first PDU session is a TSN packet, receive a second message sent by the communication device through the wireless access network device, the second message being used to request establishment or Modify the first PDU session.

The first message may be a PDU session resource establishment request or a PDU session resource modification request.

The division of modules in the embodiments of the present application is illustrative, and is only a logical function division. In actual implementation, there may be other division methods. In addition, the functional modules in the various embodiments of the present application may be integrated into one process. In the device, it can also exist alone physically, or two or more modules can be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware or software functional modules.

Wherein, when the integrated module can be implemented in the form of hardware, the device supporting a time-sensitive network can be as shown in FIG. 8, and the processing unit 701 can be a processor 802. The processor 802 may be a central processing unit (CPU), or a digital processing module, and so on. The transceiver unit 702 may be a communication interface 801. The communication interface 801 may be a transceiver, an interface circuit such as a transceiver circuit, etc., or a transceiver chip. The resource configuration device further includes a memory 803, which is used to store a program executed by the processor 801. The memory 803 may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., and may also be a volatile memory, such as random access memory (random access memory). -access memory, RAM). The memory 803 is any other medium that can be used to carry or store desired program codes in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto.

The processor 802 is configured to execute the program code stored in the memory 803, and is specifically configured to execute the actions of the aforementioned processing unit 701, which will not be repeated in this application.

The embodiment of the present application does not limit the specific connection medium between the communication interface 801, the processor 802, and the memory 803. In the embodiment of the present application, the memory 803, the processor 802, and the communication interface 801 are connected by a bus 804 in FIG. 8. The bus is represented by a thick line in FIG. 8. The connection mode between other components is only for schematic illustration. , Is not limited. The bus can be divided into address bus, data bus, control bus, etc. For ease of presentation, only one thick line is used in FIG. 8 to represent, but it does not mean that there is only one bus or one type of bus.

Based on the same inventive concept as the method embodiment, the embodiment of the present application provides a device for supporting a time-sensitive network. The structure of the device may be as shown in FIG. 9, including a processing unit 901, a first transceiver unit 902, and a second transceiver unit. 903. The device is specifically used to implement the functions of the wireless access network device in the embodiments of FIGS. 2 to 6. The device can be the wireless access network device itself, or the chip or chipset or chip in the wireless access network device. Used to perform part of the related method function. Specifically, the first transceiving unit 902 is used for transceiving data between the wireless access network device and the core network device; the second transceiving unit 903 is used for transceiving data between the wireless access network device and the communication device; the processing unit 901, Used for execution: receiving a first message sent by the core network device through the first transceiver unit 902, the first message carrying first information, and the first information is used to indicate a data packet transmitted by the first PDU session It is a TSN packet; a second message is sent to the communication device through the second transceiver unit 903, the second message carries second information, and the second information is used to characterize the data packet transmitted by the first PDU session It is a TSN package.

Exemplarily, the second information may be indicated by the type of the first PDU session. Alternatively, the second information may also be indicated by the indication information carried in the second message.

Further, the second message may include SDAP layer configuration information, and the second information is included in the SDAP layer configuration information.

Exemplarily, the first information may be indicated by the type of the first PDU session.

The processing unit 901 may be further configured to: before receiving the first message sent by the core network device through the first transceiver unit 902, receive a third message sent by the communication device through the second transceiver unit 903, and the third message is used to request the establishment or Modify the first PDU session; forward the third message to the core network device through the first transceiver unit 902.

The second message may be an RRC reconfiguration message.

Wherein, when the integrated module can be implemented in the form of hardware, the device supporting a time-sensitive network can be as shown in FIG. 10, and the processing unit 901 can be a processor 1002. The processor 1002 may be a CPU, or a digital processing module, and so on. The first transceiving unit 902 may be a communication interface 1001a, and the second transceiving unit 903 may be a communication interface 1001b. The communication interface 1001a and the communication interface 1001b may be transceivers, interface circuits such as transceiver circuits, etc., or transceiver chips, etc. Wait. The resource configuration device further includes: a memory 1003 for storing programs executed by the processor 1001. The memory 1003 may be a non-volatile memory, such as HDD or SSD, etc., or may also be a volatile memory, such as RAM. The memory 1003 is any other medium that can be used to carry or store desired program codes in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto.

The processor 1002 is configured to execute the program code stored in the memory 1003, and is specifically configured to execute the actions of the above-mentioned processing unit 901, which will not be repeated in this application.

The embodiment of the present application does not limit the specific connection medium among the communication interface 1001a, the communication interface 1001b, the processor 1002, and the memory 1003. In the embodiment of the application in FIG. 10, the memory 1003, the processor 1002, the communication interface 1001a, and the communication interface 1001b are connected by a bus 1004. The bus is represented by a thick line in FIG. 10, and the connection mode between other components is only The schematic description is not intended to be limiting. The bus can be divided into address bus, data bus, control bus, etc. For ease of representation, only one thick line is used to represent in FIG. 10, but it does not mean that there is only one bus or one type of bus.

Those skilled in the art should understand that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, this application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

This application is described with reference to flowcharts and/or block diagrams of methods, equipment (systems), and computer program products according to this application. It should be understood that each process and/or block in the flowchart and/or block diagram, and the combination of processes and/or blocks in the flowchart and/or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing equipment to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing equipment are generated It is a device that realizes the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device. The device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment. The instructions provide steps for implementing functions specified in a flow or multiple flows in the flowchart and/or a block or multiple blocks in the block diagram.

Obviously, those skilled in the art can make various changes and modifications to the application without departing from the spirit and scope of the application. In this way, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application also intends to include these modifications and variations.

Claims

A method for supporting a time-sensitive network, characterized in that the method includes:

The communication device receives a first message sent by the wireless access network device, where the first message carries first information, and the first information is used to characterize that the data packet transmitted by the first protocol data unit PDU session is a time-sensitive network TSN packet;

The communication device processes the data packet transmitted by the first PDU session based on the first information.
The method according to claim 1, wherein the first information is indicated by the type of the first PDU session; or, the first information is indicated by the indication information carried in the first message.
3. The method of claim 2, wherein the first message includes service data adaptation protocol layer SDAP layer configuration information, and the first information is included in the SDAP layer configuration information.
The method according to any one of claims 1 to 3, wherein the processing of the data packet transmitted by the first PDU session by the communication device based on the first information comprises:

The communication device transmits the data packet transmitted in the first PDU session to the Ethernet module for processing.
The method according to any one of claims 1 to 4, wherein before the communication device receives the first message sent by the wireless access network device, the method further comprises:

The communication device sends a second message to the core network device through the radio access network device, where the second message is used to request the establishment or modification of the first PDU session.
The method according to any one of claims 1 to 5, wherein the first message is a radio resource control RRC reconfiguration message.
A method for supporting a time-sensitive network, characterized in that the method includes:

The radio access network device receives a first message sent by the core network device, the first message carrying first information, and the first information is used to indicate that the data packet transmitted by the first protocol data unit PDU session is a time-sensitive network TSN packet ；

The radio access network device sends a second message to the communication device, the second message carries second information, and the second information is used to characterize that the data packet transmitted by the first PDU session is a TSN packet.
The method according to claim 7, wherein the second information is indicated by the type of the first PDU session; or, the second information is indicated by the indication information carried in the second message.
The method according to claim 7 or 8, wherein the second message includes service data adaptation protocol layer SDAP layer configuration information, and the second information is included in the SDAP layer configuration information.
The method according to any one of claims 7 to 9, wherein before the radio access network device receives the first message sent by the core network device, the method further comprises:

Receiving, by the radio access network device, a third message sent by the communication device, where the third message is used to request establishment or modification of the first PDU session;

The radio access network device forwards the third message to the core network device.
The method according to any one of claims 7 to 10, wherein the second message is a radio resource control RRC reconfiguration message.
The method according to any one of claims 7 to 11, wherein the first message is a PDU session resource establishment request or a PDU session resource modification request.
A method for supporting a time-sensitive network, characterized in that the method includes:

The core network device determines that the data packet transmitted by the first protocol data unit PDU session is a time-sensitive network TSN packet;

The core network device sends a first message to the radio access network device, where the first message carries first information, and the first information is used to indicate that the data packet transmitted by the first PDU session is a TSN packet.
The method according to claim 13, wherein the first information is indicated by the type of the first PDU session; or the first information is indicated by the indication information carried in the first message.
The method according to claim 13 or 14, characterized in that, before the core network device determines that the data packet transmitted by the first protocol data unit PDU session is a time-sensitive network TSN packet, the method further comprises:

The core network device receives a second message sent by the communication device through the radio access network device, where the second message is used to request establishment or modification of the first PDU session.
The method according to any one of claims 13 to 15, wherein the first message is a PDU session resource establishment request or a PDU session resource modification request.
A device supporting a time-sensitive network, characterized in that the device comprises:

The transceiver unit is configured to receive a first message sent by a wireless access network device, the first message carrying first information, and the first information is used to characterize that the data packet transmitted by the first protocol data unit PDU session is a time-sensitive network TSN package;

The processing unit is configured to process the data packet transmitted by the first PDU session based on the first information.
The apparatus according to claim 17, wherein the first information is indicated by the type of the first PDU session; or the first information is indicated by the indication information carried in the first message.
The apparatus according to claim 18, wherein the first message includes service data adaptation protocol layer SDAP layer configuration information, and the first information is included in the SDAP layer configuration information.
The apparatus according to any one of claims 17 to 19, wherein the processing unit is specifically configured to: when processing the data packet transmitted by the first PDU session based on the first information:

The data packet transmitted in the first PDU session is transmitted to the Ethernet module for processing.
The device according to any one of claims 17 to 20, wherein the transceiver unit is further configured to:

Before receiving the first message sent by the radio access network device, a second message is sent to the core network device through the radio access network device, where the second message is used to request establishment or modification of the first PDU session.
The apparatus according to any one of claims 17 to 21, wherein the first message is a radio resource control, RRC, reconfiguration message.
A device supporting a time-sensitive network, characterized in that the device comprises:

The first transceiver unit is used to transmit data between the wireless access network device and the core network device;

The second transceiver unit is used to transmit data between the wireless access network device and the communication device;

Processing unit for executing:

The first message sent by the core network device is received by the first transceiver unit, the first message carries first information, and the first information is used to indicate that the data packet transmitted by the first protocol data unit PDU session is time Sensitive network TSN packet;

A second message is sent to the communication device through the second transceiver unit, the second message carries second information, and the second information is used to characterize that the data packet transmitted by the first PDU session is a TSN packet.
The apparatus according to claim 23, wherein the second information is indicated by the type of the first PDU session; or the second information is indicated by the indication information carried in the second message.
The apparatus according to claim 23 or 24, wherein the second message includes service data adaptation protocol layer SDAP layer configuration information, and the second information is included in the SDAP layer configuration information.
The device according to any one of claims 23 to 25, wherein the processing unit can also be used for:

Before the first transceiving unit receives the first message sent by the core network device, the second transceiving unit receives a third message sent by the communication device, and the third message is used to request the establishment or modification of the communication device. The first PDU session;

Forward the third message to the core network device through the first transceiver unit.
The apparatus according to any one of claims 23 to 26, wherein the second message is a radio resource control, RRC, reconfiguration message.
The apparatus according to any one of claims 23 to 27, wherein the first message is a PDU session resource establishment request or a PDU session resource modification request.
A device supporting a time-sensitive network, characterized in that the device comprises:

A processing unit, configured to determine that a data packet transmitted by the first protocol data unit PDU session is a time-sensitive network TSN packet;

The transceiver unit is configured to send a first message to the radio access network device, the first message carrying first information, and the first information is used to indicate that the data packet transmitted by the first PDU session is a TSN packet.
The apparatus according to claim 29, wherein the first information is indicated by the type of the first PDU session; or, the first information is indicated by the indication information carried in the first message.
The device according to claim 29 or 30, wherein the transceiver unit is further configured to:

Before the processing unit determines that the data packet transmitted by the first PDU session is a TSN packet, a second message sent by the communication device through the radio access network device is received, and the second message is used to request the establishment or modification of the first message. A PDU session.
The apparatus according to any one of claims 29 to 31, wherein the first message is a PDU session resource establishment request or a PDU session resource modification request.
A computer-readable storage medium, wherein a program or instruction is stored in the computer-readable storage medium, and the program or the instruction can realize claim 1 when read and executed by one or more processors The method of any one of to 16.