WO2021196967A1 - 消息交互方法、装置、设备和存储介质 - Google Patents

消息交互方法、装置、设备和存储介质 Download PDF

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Publication number
WO2021196967A1
WO2021196967A1 PCT/CN2021/079032 CN2021079032W WO2021196967A1 WO 2021196967 A1 WO2021196967 A1 WO 2021196967A1 CN 2021079032 W CN2021079032 W CN 2021079032W WO 2021196967 A1 WO2021196967 A1 WO 2021196967A1
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Prior art keywords
detnet
tsn
message
flow
communication node
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PCT/CN2021/079032
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English (en)
French (fr)
Inventor
熊泉
张征
喻敬海
刘爱华
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中兴通讯股份有限公司
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Priority to KR1020227037477A priority Critical patent/KR20220160639A/ko
Priority to US17/916,082 priority patent/US20230156523A1/en
Publication of WO2021196967A1 publication Critical patent/WO2021196967A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/10—Flow control between communication endpoints
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/02—Topology update or discovery
    • H04L45/036—Updating the topology between route computation elements, e.g. between OpenFlow controllers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/38—Flow based routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/64—Routing or path finding of packets in data switching networks using an overlay routing layer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/12—Messaging; Mailboxes; Announcements

Definitions

  • This application relates to a wireless communication network, for example, to a message interaction method, device, device, and storage medium.
  • Time-Sensitive Networking (TSN) is defined, which mainly provides services such as low latency, low packet loss rate, and high reliability for L2 layer services.
  • TSN Time-Sensitive Networking
  • DetNet Deterministic Networking
  • DetNet-related technical architecture provides deterministic services for Layer 2 bridges and Layer 3 routing networks.
  • how to interact with TSN related information in the DetNet network is a problem to be solved.
  • This application provides methods, devices, equipment, and storage media for message interaction.
  • the embodiment of the present application provides an information exchange method, which is applied to a first communication node, and includes: receiving a time sensitive network (TSN) configuration message sent by a second communication node, wherein the TSN configuration message carries flow filtering Information and flow mapping information; packet filtering and mapping are performed based on the TSN configuration message.
  • TSN time sensitive network
  • the embodiment of the present application provides an information exchange method, which is applied to a second communication node, and includes: determining a time-sensitive network (TSN) configuration message based on a deterministic demand; sending the TSN configuration message to a first communication node, The TSN message is used by the first communication node to perform message filtering and mapping.
  • TSN time-sensitive network
  • An embodiment of the present application provides a message exchange device, the device is configured in a first communication node, and includes: a receiving module configured to receive a time sensitive network (TSN) configuration message sent by a second communication node, wherein the TSN
  • TSN time sensitive network
  • the configuration message carries flow filtering information and flow mapping information
  • the filtering and mapping module is configured to perform message filtering and mapping based on the TSN configuration message.
  • An embodiment of the present application provides a message interaction device, which is configured in a second communication node, and includes: a configuration module configured to determine a time sensitive network (TSN) configuration message based on a deterministic demand; and a sending module configured to transfer The TSN configuration message is sent to the first communication node, and the TSN message is used by the first communication node to perform packet filtering and mapping.
  • TSN time sensitive network
  • the embodiment of the present application provides a device, including: one or more processors; a memory for storing one or more programs; when the one or more programs are executed by the one or more processors,
  • the one or more processors implement any message interaction method as in the embodiments of the present application.
  • An embodiment of the present application provides a storage medium that stores a computer program, and when the computer program is executed by a processor, any one of the message interaction methods in the embodiments of the present application is implemented.
  • Figure 1 is a schematic diagram of DetNet MPLS forwarding plane encapsulation mode
  • Figure 2 is a schematic diagram of the format of DetNet Control Word
  • FIG. 3 is a schematic diagram of a TSN over DetNet MPLS scenario
  • FIG. 4 is a flowchart of a message exchange method provided by an embodiment of the present application.
  • FIG. 5 is a flowchart of another message interaction method provided by an embodiment of the present application.
  • Fig. 6 is a message processing flowchart of an ingress edge node provided by an embodiment of the present application.
  • Fig. 7 is a message processing flowchart of an egress edge node provided by an embodiment of the present application.
  • Fig. 8 is a diagram of the TSN over DetNet network structure in an embodiment of the present application.
  • FIG. 9 is a schematic diagram of a message interaction apparatus provided by an embodiment of the present application.
  • FIG. 10 is a schematic diagram of another message interaction device provided by an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a device provided by an embodiment of the present application.
  • TSN Time-Sensitive Networking
  • L2 Layer 2
  • L3 Layer 3
  • IETF Internet Engineering Task Force
  • Deterministic Networking DetNet
  • RRC Request For Comments
  • QoS Quality of Service
  • QoS Quality of Service
  • Figure 1 is a schematic diagram of DetNet MPLS forwarding plane encapsulation mode.
  • the IETF DetNet standard draft-ietf-detnet-mpls-04 stipulates that the encapsulation of the DetNet Multi-Protocol Label Switching (MPLS) forwarding plane is shown in Figure 1.
  • MPLS DetNet Multi-Protocol Label Switching
  • the encapsulation of the DetNet MPLS forwarding plane is extended by 3
  • the fields are DetNet Control Word, S-Label, S-Label, and F-Labels.
  • Figure 2 is a schematic diagram of the format of DetNet Control Word.
  • the format of DetNet Control Word is shown in Figure 2.
  • Sequence Number (Sequence Number) is used to implement Packet Replication (PR), Elimination and Ordering functions in DetNet technology.
  • PR Packet Replication
  • S-Label is used to identify DetNet streams.
  • F-Labels is used to realize the deterministic path function in DetNet technology and realize display routing.
  • FIG. 3 is a schematic diagram of a TSN over DetNet MPLS scenario.
  • the edge node of the DetNet MPLS domain provides identification of non-DetNet flows (TSN flows) and has the function of identifying TSN flows.
  • TSN flows non-DetNet flows
  • a TSN stream is an entity that can provide QoS.
  • the frame listener (Listener) uniquely identifies a TSN stream by a TSN stream ID (Stream IDentification, Stream ID), and the length of the TSN stream ID is 64 bits.
  • the Stream ID is not carried in the message, only exists inside the TSN node, and belongs to the control plane identifier.
  • the DetNet flow can be identified by the Flow ID (Flow-ID) in the DetNet message.
  • Flow-ID Flow-ID
  • the flow ID in the DetNet message is the S-Label in Figure 1, which is based on IPv6.
  • the flow identifier in the DetNet message is Flow-ID.
  • the DetNet MPLS domain edge node provides the service proxy function, which realizes the mapping between the TSN stream and the DetNet stream, and associates the TSN stream with the DetNet stream, which may be one-to-one or multiple TSNs.
  • the stream is mapped to a DetNet stream.
  • TSN-related information such as stream processing requirements, priority, queue operation and other attributes, needs to be notified to the DetNet network.
  • TSN Stream ID and related parameters and requirements need to be transformed into DetNet Flow-ID and related parameters and requirements, TSN flow and
  • the flow identification rules and flow mapping of the DetNet flow need to be implemented by the management and control plane method.
  • the standard lacks the interactive function of TSN related information in DetNet deterministic technology that needs to be implemented by the relevant management and control plane.
  • FIG. 4 is a flowchart of a message interaction method provided by an embodiment of the present application. This embodiment is applicable to a situation where the DetNet network and the TSN network perform information interaction. This method can be implemented by the present application.
  • the first communication node provided in the example is executed, and the message interaction device of the first communication node may be implemented in software and/or hardware.
  • the message interaction method provided by the embodiment of the present application mainly includes steps S11 and S12.
  • TSN time sensitive network
  • S12 Perform message filtering and mapping based on the TSN configuration message.
  • the first communication node is an ingress edge node of a deterministic network (DetNet) domain, or the first communication node is an egress edge node of a DetNet domain.
  • DetNet deterministic network
  • the flow filtering information when the first communication node is an ingress edge node, the flow filtering information includes: a media access control (Media Access Control Address, MAC) mask, where the MAC The mask is used to identify and filter the TSN stream.
  • MAC Media Access Control Address
  • the flow mapping information includes: a deterministic network (DetNet) flow identifier, and the DetNet flow identifier uniquely identifies a DetNet flow , Used to identify DetNet streams.
  • DetNet deterministic network
  • the flow mapping information includes: a message sequence number, and the message sequence number is in a preset state during a set instruction
  • the message serial number identifies a unique DetNet message, which is used for the DetNet message duplication and elimination function.
  • the filtering and mapping of messages based on the TSN configuration message includes: identifying and filtering TSN messages based on a MAC mask. Text; Based on the flow mapping information, the TSN message is mapped to the corresponding DetNet flow.
  • the flow filtering information includes: DetNet flow identification, wherein the DetNet flow identification in the flow filtering information is used for filtering DetNet stream.
  • the flow mapping information when the first communication node is an egress edge node, includes one or more of the following: TSN configuration file type; TSN configuration file length; TSN configuration file, Wherein, the TSN configuration file is used to carry TSN information.
  • the filtering and mapping of packets based on the TSN configuration message includes: based on DetNet in the flow filtering information
  • the flow identifier identifies and filters the DetNet message; based on the flow mapping information, the filtered DetNet message is mapped to the corresponding TSN flow and TSN configuration file.
  • FIG. 5 is a flowchart of another message interaction method provided by an embodiment of the present application.
  • This embodiment is applicable to the case of information interaction between the DetNet network and the TSN network. This method can be used by the present application.
  • the second communication node provided in the embodiment is executed, and the information interaction device of the second communication node may be implemented in software and/or hardware.
  • the message interaction method provided by the embodiment of the present application mainly includes steps S21 and S22.
  • S21 Determine a time sensitive network (TSN) configuration message based on the deterministic requirement
  • the protocol type of the TSN configuration message includes one or more of the following: in the case of configuring a Border Gateway Protocol (BGP) flow, the protocol type of the TSN configuration message is BGP; In the case of a path calculation protocol (PCEP) flow, the protocol type of the TSN configuration message is PCEP.
  • BGP Border Gateway Protocol
  • PCEP path calculation protocol
  • the flow filtering information includes: a medium access control (MAC) mask; and the flow mapping information includes: a deterministic network (DetNet) Flow identification and message sequence number.
  • MAC medium access control
  • DetNet deterministic network
  • the flow filtering information includes: DetNet flow identification, and the flow mapping information includes one or more of the following: TSN configuration file Type; TSN configuration file length; TSN configuration file.
  • an interactive method for edge nodes is provided.
  • Border Gateway Protocol BGP
  • PCEP Path Computation Element Protocol
  • RFC4271 proposes that the BGP protocol implements the interaction of routing information and so on.
  • the announcement of routing information uses an update (UPDATE) message, which carries network reachability information (Network Layer Reachability Information, NLRI), which is used to indicate routing purpose information.
  • UPDATE Update
  • NLRI Network Layer Reachability Information
  • draft-ietf-idr-rfc5575bis proposed the function of BGP Flow Specification (FlowSpec), and proposed a new NLRI.
  • NLRI is used for traffic distribution, filtering and forwarding rules.
  • the IETF standard draft- ietf-idr-flowspec-l2vpn-13 defines the filtering and forwarding rules of Ethernet traffic.
  • draft-ietf-pce-pcep-flowspec-07 proposes PCEP Flowspec on the basis of BGP Flowspec, which is used to configure the flow to the corresponding path.
  • this embodiment proposes the use of the control plane BGP/PCEP Flowspec method.
  • the filtering and forwarding rules of the DetNet/TSN flow By defining the filtering and forwarding rules of the DetNet/TSN flow, the identification, mapping and mapping of the TSN flow and the DetNet flow are completed. Announcement of relevant information, etc., so as to realize the exchange of information between DetNet and TSN.
  • BGP/PCEP needs to be used to issue TSN identification, mapping, and route announcements.
  • TSN flow identification methods include empty flow identification, source media access control address (Media Access Control Address, MAC Address)/Virtual Local Area Network (Virtual Local Area Network).
  • VLAN Local Area Network
  • IP Internet Protocol
  • the first four flow identification methods mentioned above mainly use the source MAC address, destination MAC address, virtual local area network identification (Virtual Local Area Network Identification, VLAN ID) in the Ethernet packet to identify TSN flows, based on these four BGP Flowspec
  • VLAN ID Virtual Local Area Network Identification
  • the fifth type of mask matching flow identification uses a combination of source MAC, destination MAC, VLAN ID, and mask mac_service_data_unit, but there is no such mask filtering rule in the standard. Therefore, in this embodiment, BGP and PCEP Flowspec are extended and added A L2 component (Component) type and type length value (Type Length Value, TLV), as follows is the BGP Flowspec L2Component mask filtering type and format:
  • the length of mac_service_data_unit is 48 bits, and the content is a MAC mask. Some or all of the fields can be used to identify and filter TSN streams.
  • this application proposes a flow mapping operation after TSN flow filtering, which extends DetNet-action on the basis of L2 traffic action (Traffic Actions).
  • the following is BGP Flowspec DetNet-action Format:
  • the set instruction S When the set instruction S is set to 1, it indicates that the TSN stream is mapped to the sequence number (Sequence) of the DetNet stream.
  • the length of Flow-ID is 20 or 32 bits, which is used to uniquely identify a DetNet flow.
  • the length of Sequence is 16 or 28 bits, which is used to identify a DetNet packet.
  • BGP/PCEP needs to be used to issue DetNet flow identification and TSN flow information notification. Therefore, this embodiment extends BGP/PCEP Flowspec and adds an L3 Component type and TLV.
  • BGP Flowspec L3 Component Flow-ID filtering type and format are as follows:
  • the length of Flow-ID is 20 or 32 bits, which is used to uniquely identify a DetNet flow.
  • TSN-action is extended on the basis of Traffic Actions at the L3 layer.
  • BGP Flowspec TSN-action format is as follows:
  • the length of the type (Type) is 8 bits, which is used to indicate the type of the TSN profile (profile).
  • the TSN profile type includes but is not limited to the TSN profile definition of related technologies.
  • the TSN profile of related technologies is defined as follows:
  • Type 1, P802.1CM-2018 Time-Sensitive Networking for Fronthaul;
  • Type 2, IEC/IEEE 60802 TSN Profile for Industrial Automation (TSN Profile for Industrial Automation);
  • Type 4, P802.1DF TSN Profile for Service Provider Networks (TSN Profile for Service Provider Networks);
  • Type 6, P802.1CMde enhanced fronthaul files to support the new fronthaul interface, synchronization and synchronization standards (Enhancements to Fronthaul Profiles to Support New Fronthaul Interface, Synchronization, and Syntonization Standards).
  • the length (Length) is 8 bits and is used to indicate the length of the TSN-Profile.
  • TSN-Profile The length of TSN-Profile is variable and is used to carry TSN information.
  • Type and corresponding TSN-Profile include but are not limited to IEEE802.1TSN and related standards and their combinations defined by IEEE802.1TSN in the future.
  • This embodiment is applicable to various networks such as DetNet IP, MPLS, SRv6, etc.
  • the DetNet flow identifier is not extended in the message in the DetNet IP network, so the TSN flow identification at the ingress edge node will not be mapped to the DetNet Flow-ID, but According to the existing IP routing method, it is mapped to the 6-tuple field (IP 6-tuple) of the IP header.
  • IP 6-tuple 6-tuple field
  • the egress edge node will not be identified by DetNet Flow-ID, but filtered by IP 6-tuple, and then mapped to TSN flow and TSN profile.
  • this embodiment proposes a method for TSN-related information exchange in a DetNet network.
  • This embodiment proposes a method of using control plane BGP/PCEP Flowspec, which is completed by defining TSN flow filtering rules and operations, etc. TSN flow and DetNet flow mapping and related information announcement, etc., so as to realize the interaction between DetNet and TSN.
  • the interaction process between DetNet and TSN provided in the embodiment of the present application mainly includes the following process.
  • the controller delivers configuration messages to the DetNet ingress and egress edge nodes, which carry the flow filtering rules and mapping operations proposed in this application, and the message types include BGP or PCEP.
  • the DetNet ingress edge node receives and filters TSN messages according to the message configuration, and maps them to the DetNet stream.
  • the DetNet egress edge node receives and filters DetNet messages according to the message configuration, and maps them to the TSN stream and its TSN profile.
  • FIG. 6 is a message processing flowchart of an ingress edge node provided by an embodiment of the present application. As shown in FIG. 6, the message processing flow of an ingress edge node mainly includes the following steps.
  • the controller delivers a configuration message to the DetNet ingress edge node, which carries the TSN filtering rules and operations proposed in this application.
  • the DetNet ingress edge node receives and filters the TSN message according to the message configuration, and maps it to the DetNet stream.
  • Fig. 7 is a message processing flowchart of an egress edge node provided by an embodiment of the present application. As shown in Fig. 7, the message processing flow of an egress edge node mainly includes the following steps.
  • the controller delivers a configuration message to the DetNet egress edge node, which carries the DetNet filtering rules and TSN operations proposed in this application.
  • the DetNet egress edge node receives and filters the DetNet message according to the message configuration, and maps it to the TSN stream and its TSN profile.
  • this embodiment provides an application manner of the above message exchange method in a TSN over DetNet MPLS network.
  • FIG 8 is a diagram of the TSN over DetNet network structure in the embodiment of this application.
  • the L2 layer TSN terminal nodes CE1 and CE2 need to be connected through the DetNet network.
  • the TSN stream is sent from CE1 to PE1 and needs to be mapped into a DetNet stream.
  • the DetNet stream is restored to a TSN stream, and the TSN stream is forwarded to CE2.
  • This embodiment proposes a notification function of TSN related information in the DetNet network, and proposes a method of using the control plane BGP/PCEP Flowspec to define the filtering rules and operations of the TSN flow to complete the mapping between the TSN flow and the DetNet flow and the related information Announcements, etc., so as to realize the interaction between DetNet and TSN.
  • the controller sends configuration messages to the PE1 and PE2 nodes, which carry the flow filtering rules and mapping operations proposed in this application, complete the TSN flow filtering, identification and forwarding configuration of the PE1 node, and complete the DetNet flow identification, filtering and forwarding configuration of the PE2 node .
  • CE1 sends the TSN stream to the PE1 node.
  • the PE1 node After receiving the TSN message, the PE1 node receives and filters the TSN message according to the control plane configuration, and maps it to the corresponding DetNet stream, which is mapped to the S-label of DetNet MPLS, and passes DetNet MPLS Forward to the PE2 node.
  • the PE2 node After receiving the message, the PE2 node receives and filters the DetNet message according to the control plane configuration, maps it to the TSN stream and its TSN profile, and forwards the TSN stream to CE2.
  • this embodiment provides an application manner of the above message exchange method in a TSN over DetNet SRv6 network.
  • the TSN over DetNet network structure diagram the L2 layer TSN terminal nodes CE1 and CE2 need to be connected through the DetNet network, and the TSN flow is sent from CE1 to PE1 and needs to be mapped into a DetNet flow.
  • the DetNet flow is restored to a TSN flow.
  • This embodiment proposes a notification function of TSN related information in the DetNet network, and proposes a method of using the control plane BGP/PCEP flowspec to define the filtering rules and operations of the TSN flow to complete the mapping between the TSN flow and the DetNet flow and the related information Announcements, etc., so as to realize the interaction between DetNet and TSN.
  • the controller sends configuration messages to the PE1 and PE2 nodes, which carry the flow filtering rules and mapping operations proposed in this application, complete the TSN flow filtering, identification and forwarding configuration of the PE1 node, and complete the DetNet flow identification, filtering and forwarding configuration of the PE2 node .
  • CE1 sends the TSN flow to the PE1 node.
  • the PE1 node After receiving the TSN message, the PE1 node receives and filters the TSN message according to the control plane configuration, and maps it to the corresponding DetNet flow, that is, maps to the Flow-ID of DetNet SRv6, and passes DetNet MPLS Forward to the PE2 node.
  • the PE2 node After receiving the message, the PE2 node receives and filters the DetNet message according to the control plane configuration, maps it to the TSN stream and its TSN profile, and forwards the TSN stream to CE2.
  • FIG. 9 is a schematic diagram of a message interaction device provided by an embodiment of the present application. This embodiment is applicable to the case of information interaction between the DetNet network and the TSN network.
  • the device is configured in the first communication.
  • the message interaction device of the first communication node may be implemented in software and/or hardware.
  • the message interaction apparatus mainly includes a receiving module 91 and a filtering and mapping module 92.
  • the receiving module 91 is configured to receive a time sensitive network (TSN) configuration message sent by the second communication node, where the TSN configuration message carries flow filtering information and flow mapping information.
  • TSN time sensitive network
  • the filtering and mapping module 92 is configured to perform packet filtering and mapping based on the TSN configuration message.
  • the first communication node is an ingress edge node of a Deterministic Network (DetNet) domain, or the first communication node is an ingress edge node of the DetNet domain.
  • DetNet Deterministic Network
  • the flow filtering information includes: a medium access control (MAC) mask, wherein the MAC mask is used to identify And filter the TSN stream.
  • MAC medium access control
  • the flow mapping information includes: a deterministic network (DetNet) flow identifier, and the DetNet flow identifier uniquely identifies a DetNet flow , Used to identify DetNet streams.
  • DetNet deterministic network
  • the flow mapping information includes: a message sequence number, and the message sequence number is in a preset state during a set instruction
  • the message serial number identifies a unique DetNet message, which is used for the DetNet message duplication and elimination function.
  • the filtering and mapping module 92 is configured to identify and filter TSN packets based on the MAC mask; based on the flow mapping The information maps the TSN message to the corresponding DetNet stream.
  • the flow filtering information includes: DetNet flow identification, wherein the DetNet flow identification in the flow filtering information is used for filtering DetNet stream.
  • the flow mapping information when the first communication node is an egress edge node, includes one or more of the following: TSN configuration file type; TSN configuration file length; TSN configuration file, Wherein, the TSN configuration file is used to carry TSN information.
  • the filtering and mapping module 92 is configured to identify and filter DetNet packets based on the DetNet flow identifier in the flow filtering information. Text; Based on the flow mapping information, the filtered DetNet message is mapped to the corresponding TSN flow and TSN configuration file.
  • the message interaction apparatus provided in this embodiment can execute the message interaction method provided in any embodiment of the present application, and is equipped with corresponding functional modules for executing the method.
  • the message interaction method provided in any embodiment of this application can execute the message interaction method provided in any embodiment of this application.
  • FIG. 10 is a schematic diagram of another message interaction device provided by an embodiment of the present application. This embodiment is applicable to the case of information interaction between the DetNet network and the TSN network, and the device is configured in the second In the communication node, the message interaction device of the second communication node may be implemented in software and/or hardware.
  • the message interaction apparatus mainly includes a configuration module 101 and a sending module 102.
  • the configuration module 101 is configured to determine a time sensitive network (TSN) configuration message based on a deterministic requirement.
  • TSN time sensitive network
  • the sending module 102 is configured to send the TSN configuration message to the first communication node, where the TSN message is used by the first communication node to perform packet filtering and mapping.
  • the protocol type of the TSN configuration message includes one or more of the following: in the case of configuring a Border Gateway Protocol (BGP) flow, the protocol type of the TSN configuration message is BGP; In the case of a path calculation protocol (PCEP) flow, the protocol type of the TSN configuration message is PCEP.
  • BGP Border Gateway Protocol
  • PCEP path calculation protocol
  • the flow filtering information includes: a medium access control (MAC) mask; and the flow mapping information includes: a deterministic network (DetNet) Flow identification and message sequence number.
  • MAC medium access control
  • DetNet deterministic network
  • the flow filtering information includes: DetNet flow identification, and the flow mapping information includes one or more of the following: TSN configuration file Type; TSN configuration file length; TSN configuration file.
  • the message interaction apparatus provided in this embodiment can execute the message interaction method provided in any embodiment of the present application, and is equipped with corresponding functional modules for executing the method.
  • the message interaction method provided in any embodiment of this application can execute the message interaction method provided in any embodiment of this application.
  • FIG. 11 is a schematic structural diagram of a device provided in an embodiment of the application.
  • the device includes a processor 111, a memory 112, an input device 113, an output device 114, and Communication device 115; the number of processors 111 in the device can be one or more.
  • one processor 111 is taken as an example; the processor 111, memory 112, input device 113, and output device 114 in the device can be connected via a bus or Connect in other ways.
  • connection via a bus is taken as an example.
  • the memory 112 can be used to store software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the message processing method in the embodiment of the present application (for example, the receiving module in the message interaction device).
  • the filtering and mapping module 92) is another example of the program instructions/modules corresponding to the message interaction method in the embodiment of the present application (for example, the configuration module 101 and the sending module 102 in the message interaction device).
  • the processor 111 executes various functional applications and data processing of the device by running software programs, instructions, and modules stored in the memory 112, that is, implements any message interaction method provided in the embodiments of the present application.
  • the memory 112 may mainly include a program storage area and a data storage area.
  • the program storage area may store an operating system and an application program required by at least one function; the data storage area may store data created according to the use of the device, and the like.
  • the memory 112 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices.
  • the memory 112 may include a memory remotely provided with respect to the processor 111, and these remote memories may be connected to the device through a network. Examples of the aforementioned networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.
  • the input device 113 can be used to receive inputted numeric or character information, and generate key signal inputs related to user settings and function control of the device.
  • the output device 114 may include a display device such as a display screen.
  • the communication device 115 may include a receiver and a transmitter.
  • the communication device 115 is configured to transmit and receive information according to the control of the processor 111.
  • the processor 111 executes various functional applications and data processing by running programs stored in the system memory 112, such as implementing the message interaction method provided in the embodiments of the present application.
  • the method includes: receiving a time sensitive network (TSN) configuration message sent by a second communication node, wherein the TSN configuration message carries flow filtering information and flow mapping information; and performing packet filtering and mapping based on the TSN configuration message.
  • TSN time sensitive network
  • processor 111 may also implement the technical solution of the message interaction method provided by any embodiment of the present application.
  • the hardware structure and function of the device please refer to the content explanation of this embodiment.
  • the processor 111 executes various functional applications and data processing by running programs stored in the system memory 112, such as implementing the message interaction method provided in the embodiments of the present application.
  • the method includes: determining a time sensitive network (TSN) configuration message based on a deterministic requirement; sending the TSN configuration message to a first communication node, and the TSN message is used by the first communication node to perform message filtering and mapping.
  • TSN time sensitive network
  • processor 610 may also implement the technical solution of the message interaction method provided by any embodiment of the present application.
  • the hardware structure and function of the device please refer to the content explanation of this embodiment.
  • an embodiment of the present application further provides a storage medium containing computer-executable instructions.
  • the computer-executable instructions are used to perform a message interaction method when executed by a computer processor.
  • the method is applied to a first communication node and includes: receiving a time-sensitive network (TSN) configuration message sent by a second communication node, wherein the TSN configuration message carries flow filtering information and flow mapping information; and performing processing based on the TSN configuration message Message filtering and mapping.
  • TSN time-sensitive network
  • An embodiment of the present application provides a storage medium containing computer-executable instructions.
  • the computer-executable instructions are not limited to the operations of the above-mentioned method, and can also perform related operations in the message interaction method provided by any embodiment of the present application. .
  • the embodiments of the present application also provide a storage medium containing computer-executable instructions, when the computer-executable instructions are executed by a computer processor, are used to perform an information interaction method, and the method is applied to a second communication node, including : Determine a time-sensitive network (TSN) configuration message based on the deterministic requirement; send the TSN configuration message to the first communication node, and the TSN message is used by the first communication node to perform message filtering and mapping.
  • TSN time-sensitive network
  • An embodiment of the present application provides a storage medium containing computer-executable instructions.
  • the computer-executable instructions are not limited to the operations of the above-mentioned method, and can also perform related operations in the message interaction method provided by any embodiment of the present application. .
  • user terminal covers any suitable type of wireless user equipment, such as a mobile phone, a portable data processing device, a portable web browser, or a mobile station in a vehicle.
  • the various embodiments of the present application can be implemented in hardware or dedicated circuits, software, logic or any combination thereof.
  • some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software that may be executed by a controller, microprocessor, or other computing device, although the present application is not limited thereto.
  • the embodiments of the present application may be implemented by executing computer program instructions by a data processor of a mobile device, for example, implemented in a processor entity, or implemented by hardware, or implemented by a combination of software and hardware.
  • Computer program instructions can be assembly instructions, Instruction Set Architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or written in any combination of one or more programming languages Source code or object code.
  • ISA Instruction Set Architecture
  • the block diagram of any logic flow in the drawings of the present application may represent program steps, or may represent interconnected logic circuits, modules, and functions, or may represent a combination of program steps and logic circuits, modules, and functions.
  • the computer program can be stored on the memory.
  • the memory can be of any type suitable for the local technical environment and can be implemented using any suitable data storage technology, such as but not limited to read only memory (ROM), random access memory (RAM), optical storage devices and systems (digital multi-function optical discs) (Digital Video Disc, DVD) or CD (Compact Disk, optical disc)), etc.
  • Computer-readable media may include non-transitory storage media.
  • the data processor can be any type suitable for the local technical environment, such as but not limited to general-purpose computers, special-purpose computers, microprocessors, digital signal processors (Digital Signal Processors, DSP), application specific integrated circuits (ASICs) ), programmable logic devices (Field Programmable Gate Array, FPGA), and processors based on multi-core processor architecture.
  • DSP Digital Signal Processors
  • ASICs application specific integrated circuits
  • FPGA Field Programmable Gate Array
  • processors based on multi-core processor architecture such as but not limited to general-purpose computers, special-purpose computers, microprocessors, digital signal processors (Digital Signal Processors, DSP), application specific integrated circuits (ASICs) ), programmable logic devices (Field Programmable Gate Array, FPGA), and processors based on multi-core processor architecture.

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Abstract

本申请提出一种消息交互方法、装置、设备和存储介质，包括：所述方法应用于第一通信节点，包括：接收第二通信节点发送的时间敏感网络(TSN)配置消息，其中，所述TSN配置消息中携带流过滤信息和流映射信息；基于所述TSN配置消息进行报文过滤及映射。

Description

消息交互方法、装置、设备和存储介质
本申请要求在2020年03月30日提交中国专利局、申请号为202010238625.7的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及无线通信网络，例如涉及一种消息交互方法、装置、设备和存储介质。
背景技术
为了满足确定性服务等的业务需求，定义了时间敏感网络(Time-Sensitive Networking，TSN)，主要为L2层业务提供低时延，低丢包率，高可靠性等服务。同时，为了在L3层实现确定性技术，也提出确定性网络(Deterministic Networking，DetNet)技术，DetNet相关技术架构为二层桥和三层路由网络提供确定性服务。然而，DetNet网络中TSN相关信息如何交互是一个待解决的问题。
发明内容
本申请提供用于消息交互的方法、装置、设备和存储介质。
本申请实施例提供一种信息交互方法，所述方法应用于第一通信节点，包括：接收第二通信节点发送的时间敏感网络(TSN)配置消息，其中，所述TSN配置消息中携带流过滤信息和流映射信息；基于所述TSN配置消息进行报文过滤及映射。
本申请实施例提供一种信息交互方法，所述方法应用于第二通信节点，包括：基于确定性需求确定时间敏感网络(TSN)配置消息；将所述TSN配置消息发送至第一通信节点，所述TSN消息用于第一通信节点进行报文过滤及映射。
本申请实施例提供一种消息交互装置，所述装置配置于第一通信节点，包括：接收模块，被配置为接收第二通信节点发送的时间敏感网络(TSN)配置消息，其中，所述TSN配置消息中携带流过滤信息和流映射信息；过滤及映射模块，被配置为基于所述TSN配置消息进行报文过滤及映射。
本申请实施例提供一种消息交互装置，所述装置配置于第二通信节点，包括：配置模块，被配置为基于确定性需求确定时间敏感网络(TSN)配置消息；发送模块，被配置为将所述TSN配置消息发送至第一通信节点，所述TSN消息用于第一通信节点进行报文过滤及映射。
本申请实施例提供一种设备，包括：一个或多个处理器；存储器，用于存储一个或多个程序；当所述一个或多个程序被所述一个或多个处理器执行时，所述一个或多个处理器实现如本申请实施例中的任意一种消息交互方法。
本申请实施例提供了一种存储介质，所述存储介质存储有计算机程序，所述计算机程序被处理器执行时实现本申请实施例中的任意一种消息交互方法。
关于本申请的以上实施例和其他方面以及其实现方式，在附图说明、实施方式和权利要求中提供更多说明。
附图说明
图1是DetNet MPLS转发面的封装方式的示意图；
图2是DetNet Control Word的格式的示意图；
图3是TSN over DetNet MPLS场景的示意图；
图4是本申请实施例提供的一种消息交互方法的流程图；
图5是本申请实施例提供的另一种消息交互方法的流程图；
图6是本申请实施例提供的入口边缘节点的消息处理流程图；
图7是本申请实施例提供的出口边缘节点的消息处理流程图；
图8是本申请实施例中的TSN over DetNet网络结构图；
图9是本申请实施例提供的一种消息交互装置的示意图；
图10是本申请实施例提供的另一种消息交互装置的示意图；
图11是本申请实施例提供的一种设备的结构示意图。
具体实施方式
下文中将结合附图对本申请的实施例进行说明。
在附图的流程图示出的步骤可以在诸如一组计算机可执行指令的计算机系统中执行。虽然在流程图中示出了逻辑顺序，但是在一些情况下，可以以不同于此处的顺序执行所示出或描述的步骤。
为了满足确定性服务等的业务需求，电气和电子工程师协会(Institute of Electrical and Electronics Engineers，IEEE)802.1标准组织定义了时间敏感网络(Time-Sensitive Networking，TSN)，TSN主要为数据链路层(层2(Layer 2，L2))业务提供低时延，低丢包率，高可靠性等服务。同时，为了在网络层(层3(Layer 3，L3))实现确定性技术，国际互联网工程任务组(The Internet  Engineering Task Force，IETF)标准组织也提出确定性网络(Deterministic Networking，DetNet)技术，请求评论(Request For Comments，RFC)8655定义DetNet相关技术架构，为二层桥和三层路由网络提供确定性服务，服务质量(Quality of Service，QoS)要求包括确定性时延上限，低丢包率，降低抖动和高可靠性等。
图1是DetNet MPLS转发面的封装方式的示意图。IETF DetNet标准draft-ietf-detnet-mpls-04规定DetNet多协议标签交换(Multi-Protocol Label Switching，MPLS)转发面的封装方式如图1所示，在DetNet MPLS转发面的封装方式扩展了3个字段，分别为DetNet控制字(DetNet Control Word)，S标签(S-Label)S-Label及F标签(F-Labels)。
图2是DetNet Control Word的格式的示意图。DetNet Control Word的格式如图2所示，序列号(Sequence Number)用于实现DetNet技术中的数据包复制(Packet Replication，PR)，消除(Elimination)及排序(Ordering)功能。S-Label用于识别DetNet流。F-Labels用于实现DetNet技术中的确定性路径功能，实现显示路由。
为了解决L3层网络实现L2层孤岛连通的场景，draft-ietf-detnet-tsn-vpn-over-mpls-01介绍了TSN越过(over)DetNet MPLS的场景及方案，L3层使用DetNet实现确定性技术，将TSN网络连通。图3是TSN over DetNet MPLS场景的示意图。如图3所示，DetNet MPLS域的边缘节点提供识别非DetNet流(TSN流)，拥有TSN流识别功能。根据TSN标准IEEE P802.1CB定义，TSN流(Stream)是一个可以提供QoS的实体，是一个报文序列，可以是单播也可以是组播，从一个对话端(Talker)到一个或多个帧听端(Listener)，由TSN流标识(Stream IDentification，Stream ID)唯一标识一条TSN流，TSN流标识长度是64比特。Stream ID未在报文中携带，只存在于TSN节点内部，属于控制平面标识。而DetNet流可以由DetNet报文中的流标识(Flow IDentification，Flow-ID)识别，其中在DetNet MPLS数据面时，DetNet报文中的流标识为图1中的S-Label，在DetNet基于IPv6的源路由协议(Source Route IPv6，SRv6)数据面时，DetNet报文中的流标识为Flow-ID。
为了实现DetNet网络连通TSN网络，DetNet MPLS域边缘节点提供业务处理(service proxy)功能，实现TSN流和DetNet流的映射，将TSN流关联到DetNet流，可能一对一，也可能是多个TSN流映射到一个DetNet流。TSN相关信息，如流处理需求，优先级，队列操作等属性，需要通告到DetNet网络，TSN的Stream ID及其相关参数及需求，需要转化成DetNet Flow-ID及相关参数及需求，TSN流和DetNet流的流识别规则及流映射需要采用管控平面方法实现。
但标准中缺失了相关管控平面需要实现的DetNet确定性技术中TSN相关信息的交互功能。
在一个示例性的实施方式中，图4是本申请实施例提供的一种消息交互方法的流程图，本实施例可适用于DetNet网络和TSN网络进行信息交互的情况，该方法可以由本申请实施例提供的第一通信节点来执行，该第一通信节点的消息交互装置可采用软件和/或硬件的方式实现。
如图4所示，本申请实施例提供的消息交互方法主要包括步骤S11、S12。
S11、接收第二通信节点发送的时间敏感网络(TSN)配置消息，其中，所述TSN配置消息中携带流过滤信息和流映射信息。
S12、基于所述TSN配置消息进行报文过滤及映射。
在一个示例性的实施方式中，所述第一通信节点是确定性网络(DetNet)域的入口边缘节点，或，所述第一通信节点是DetNet域的出口边缘节点。
在一个示例性的实施方式中，在所述第一通信节点是入口边缘节点的情况下，所述流过滤信息包括：介质访问控制(Media Access Control Address，MAC)掩码，其中，所述MAC掩码用于识别和过滤TSN流。
在一个示例性的实施方式中，在所述第一通信节点是入口边缘节点的情况下，所述流映射信息包括：确定性网络(DetNet)流标识，所述DetNet流标识唯一标识一条DetNet流，用于识别DetNet流。
在一个示例性的实施方式中，在所述第一通信节点是入口边缘节点的情况下，所述流映射信息包括：报文序列号，所述报文序列号在置位指令处于预设状态的情况下携带，所述报文序列号标识唯一一个DetNet报文，用于DetNet报文复制与消除功能。
在一个示例性的实施方式中，在所述第一通信节点是入口边缘节点的情况下，所述基于所述TSN配置消息进行报文过滤及映射，包括：基于MAC掩码识别并过滤TSN报文；基于所述流映射信息将TSN报文映射到对应的DetNet流。
在一个示例性的实施方式中，在所述第一通信节点是出口边缘节点的情况下，所述流过滤信息包括：DetNet流标识，其中，所述流过滤信息中的DetNet流标识用于过滤DetNet流。
在一个示例性的实施方式中，在所述第一通信节点是出口边缘节点的情况下，所述流映射信息包括如下一个或多个：TSN配置文件类型；TSN配置文件长度；TSN配置文件，其中，所述TSN配置文件用于携带TSN信息。
在一个示例性的实施方式中，在所述第一通信节点是出口边缘节点的情况下，所述基于所述TSN配置消息进行报文过滤及映射，包括：基于所述流过滤信息中的DetNet流标识识别并过滤DetNet报文；基于所述流映射信息将过滤后的DetNet报文映射到对应的TSN流和TSN配置文件。
在一个示例性的实施方式中，图5是本申请实施例提供的另一种消息交互方法的流程图，本实施例可适用于DetNet网络和TSN网络进行信息交互的情况，该方法可以由本申请实施例提供的第二通信节点来执行，该第二通信节点的信息交互装置可采用软件和/或硬件的方式实现。
如图5所示，本申请实施例提供的消息交互方法主要包括步骤S21、S22。
S21、基于确定性需求确定时间敏感网络(TSN)配置消息；
S22、将所述TSN配置消息发送至第一通信节点，所述TSN消息用于第一通信节点进行报文过滤及映射。
在一个示例性的实施方式中，所述TSN配置消息的协议类型包括如下一个或多个：在配置边界网关协议(BGP)流的情况下，所述TSN配置消息的协议类型是BGP；在配置路径计算协议(PCEP)流的情况下，所述TSN配置消息的协议类型是PCEP。
在一个示例性的实施方式中，在所述第一通信节点是入口边缘节点的情况下，所述流过滤信息包括：介质访问控制(MAC)掩码；所述流映射信息包括：确定性网络(DetNet)流标识和报文序列号。
在一个示例性的实施方式中，在所述第一通信节点是出口边缘节点的情况下，所述流过滤信息包括：DetNet流标识，所述流映射信息包括如下一个或多个：TSN配置文件类型；TSN配置文件长度；TSN配置文件。
在一个应用性实例中，提供一种边缘节点的交互方法。
为了实现DetNet网络中流识别及映射等功能，可以采取控制面配置的方式，如IETF标准提出的边界网关协议(Border Gateway Protocol，BGP)及路径计算协议(Path Computation Element Protocol，PCEP)。RFC4271提出BGP协议实现路由信息等的交互，路由信息的通告使用更新(UPDATE)消息，其中携网络可达性信息(Network Layer Reachability Information，NLRI)，用于指示路由目的信息。
在此基础上，draft-ietf-idr-rfc5575bis提出了BGP流配置(Flow Specification， Flowspec)的功能，提出一种新的NLRI，NLRI用于流量的分发、过滤及转发的规则，IETF标准draft-ietf-idr-flowspec-l2vpn-13定义了以太网流量的过滤及转发规则。同时draft-ietf-pce-pcep-flowspec-07在BGP Flowspec的基础上提出PCEP Flowspec，用于流量到相应路径的配置。
为了实现DetNet网络中TSN相关信息的交互功能，本实施例提出采用控制面BGP/PCEP Flowspec的方法，通过定义DetNet/TSN流的过滤及转发规则等，完成TSN流与DetNet流的识别、映射及相关信息的通告等，从而实现DetNet与TSN之间信息的交互。
首先，在DetNet域的入口边缘节点，需要使用BGP/PCEP下发TSN识别、映射及路由通告。根据TSN标准IEEE802.1CB及IEEE802.1CBdb的TSN流识别方式，定义了5种流识别功能，包括空流识别，源媒体存取控制位址(Media Access Control Address，MAC Address)/虚拟局域网(Virtual Local Area Network，VLAN)流识别，目的MAC/VLAN流识别，网际互连协议(Internet Protocol，IP)流识别，及掩码匹配流识别。
上述前四种流识别方式主要利用以太网报文中的源MAC地址，目的MAC地址，虚拟局域网标识(Virtual Local Area Network Identification，VLAN ID)等组合进行TSN流识别，基于这四种的BGP Flowspec的过滤规则已在draft-ietf-idr-flowspec-l2vpn-13中定义，TSN流过滤规则可以直接使用。但第五种掩码匹配流识别采用源MAC，目的MAC，VLAN ID及掩码mac_service_data_unit组合识别方式，但标准中无此掩码过滤规则，因此，本实施例中扩展BGP及PCEP Flowspec，新增一个L2组件(Component)类型及类型长度值(Type Length Value，TLV)，如下是BGP Flowspec L2Component掩码过滤类型及格式：
Type TBD1-mac_service_data_unit
Encoding:<type(1 octet),length(1 octet),mac_service_data_unit>
如下是PCEP Flowspec扩展的MAC_SERVICE_DATA_UINIT TLV格式：
Figure PCTCN2021079032-appb-000001
Figure PCTCN2021079032-appb-000002
mac_service_data_unit的长度为48比特，内容是MAC掩码，可以使用其中部分或全部字段用于识别及过滤TSN流。
为了实现TSN流与DetNet流的映射，本申请提出TSN流过滤后的流映射操作，在L2层业务行为(Traffic Actions)的基础上扩展DetNet行为(DetNet-action)，如下是BGP Flowspec DetNet-action格式：
Figure PCTCN2021079032-appb-000003
置位指令S置1时，表明TSN流映射到该DetNet流的序列号(Sequence)。
Flow-ID的长度是20或32比特，用于唯一识别一个DetNet流。
Sequence的长度是16或28比特，用于识别一个DetNet报文。
在DetNet域的出边缘节点，需要使用BGP/PCEP下发DetNet流识别及TSN流信息通告。因此本实施例扩展BGP/PCEP Flowspec，新增一个L3 Component类型及TLV。其中，BGP Flowspec L3 Component Flow-ID过滤类型及格式如下：
Type TBD2-Flow-ID
Encoding:<type(1 octet),length(1 octet),Flow-ID>
PCEP Flowspec扩展的FLOW_ID TLV格式如下：
Figure PCTCN2021079032-appb-000004
Figure PCTCN2021079032-appb-000005
Flow-ID的长度是20或32比特，用于唯一识别一个DetNet流。
为了实现TSN流与DetNet流的映射，本申请提出DetNet流过滤后映射及恢复到TSN流的操作，在L3层Traffic Actions的基础上扩展TSN-action，BGP Flowspec TSN-action格式如下：
Figure PCTCN2021079032-appb-000006
类型(Type)的长度是8比特，用于指示TSN配置文件(profile)类型。
TSN profile类型包括但不限于相关技术的TSN profile定义。相关技术的TSN profile定义如下：
Type＝1，P802.1CM-2018 针对前传的时间敏感网络(Time-Sensitive Networking for Fronthaul)；
Type＝2，IEC/IEEE 60802 工业自动化的TSN配置文件(TSN Profile for Industrial Automation)；
Type＝3，P802.1DC 网络系统的服务质量提供(Quality of Service Provision by Network Systems)；
Type＝4，P802.1DF 服务商网络的TSN配置文件(TSN Profile for Service Provider Networks)；
Type＝5，P802.1DG 车载以太网通信的TSN配置文件(TSN Profile for Automotive In-Vehicle Ethernet Communications)；
Type＝6，P802.1CMde 增强前传文件以支持新前传接口、同步和同步标准(Enhancements to Fronthaul Profiles to Support New Fronthaul Interface, Synchronization,and Syntonization Standards)。
长度(Length)的长度是8比特，用于指示TSN-Profile的长度。
TSN-Profile的长度是可变的，用于携带TSN信息。Type及对应的TSN-Profile包括但不限于IEEE802.1TSN及IEEE802.1TSN将来定义的相关标准及其组合。
本实施例适用于DetNet IP、MPLS、SRv6等多种网络，但DetNet IP网络中报文中未扩展DetNet流标识，因此在入口边缘节点TSN流识别后不会映射到DetNet Flow-ID，而是按照已有的IP路由方式，映射到IP报文头的6元组字段(IP 6元组)。在出口边缘节点不会通过DetNet Flow-ID识别，而是通过IP 6元组方式过滤，再映射到TSN流及TSN profile。
在一个应用性实例中，本实施例中提出一种DetNet网络中TSN相关信息交互的方法，本实施例提出采用控制面BGP/PCEP Flowspec的方法，通过定义TSN流的过滤规则及操作等，完成TSN流与DetNet流的映射及相关信息的通告等，从而实现DetNet与TSN之间的交互。本申请实施例提供的DetNet与TSN之间的交互流程主要包括以下过程。
控制器下发配置消息到DetNet入口及出口边缘节点，其中携带本申请提出的流过滤规则及映射操作，消息类型包括BGP或PCEP。
DetNet入口边缘节点根据消息配置，接收并过滤TSN报文，并映射到DetNet流。
DetNet出口边缘节点根据消息配置，接收并过滤DetNet报文，并映射到TSN流及其TSN profile。
图6是本申请实施例提供的入口边缘节点的消息处理流程图，如图6所示，入口边缘节点的消息处理流程主要包括以下步骤。
S31、控制器下发配置消息到DetNet入口边缘节点，其中携带本申请提出的TSN过滤规则及操作。
S32、DetNet入口边缘节点根据消息配置，接收并过滤TSN报文，并映射到DetNet流。
图7是本申请实施例提供的出口边缘节点的消息处理流程图，如图7所示，出口边缘节点的消息处理流程主要包括以下步骤。
S41、控制器下发配置消息到DetNet出口边缘节点，其中携带本申请提出的DetNet过滤规则及TSN操作。
S42、DetNet出口边缘节点根据消息配置，接收并过滤DetNet报文，并映射到TSN流及其TSN profile。
在一个应用性实施方式中，本实施例中提供了上述消息交互方法在TSN over DetNet MPLS网络中的应用方式。
图8是本申请实施例中的TSN over DetNet网络结构图，如图8所示，L2层TSN终端节点CE1和CE2需要通过DetNet网络连通，TSN流从CE1发到PE1，需要映射成DetNet流，在PE2节点处DetNet流恢复成TSN流，将TSN流转发到CE2。本实施例提出一种DetNet网络中TSN相关信息的通告功能，提出采用控制面BGP/PCEP Flowspec的方法，通过定义TSN流的过滤规则及操作等，完成TSN流与DetNet流的映射及相关信息的通告等，从而实现DetNet与TSN之间的交互。
当DetNet域为MPLS网络时，流程如下。
控制器下发配置消息到PE1及PE2节点，其中携带本申请提出的流过滤规则及映射操作，完成PE1节点的TSN流过滤、识别及转发配置，完成PE2节点的DetNet流识别、过滤及转发配置。
CE1发送TSN流到PE1节点，PE1节点收到TSN报文后，根据控制面配置，接收并过滤TSN报文，并映射到对应的DetNet流，即映射到DetNet MPLS的S-label，通过DetNet MPLS转发到PE2节点。
PE2节点接收到报文后，根据控制面配置，接收并过滤DetNet报文，并映射到TSN流及其TSN profile，并将该TSN流转发到CE2。
在一个应用性实施方式中，本实施例中提供了上述消息交互方法在TSN over DetNet SRv6网络中的应用方式。
如图8所示TSN over DetNet网络结构图，L2层TSN终端节点CE1和CE2需要通过DetNet网络连通，TSN流从CE1发到PE1，需要映射成DetNet流，在PE2节点处DetNet流恢复成TSN流，将TSN流转发到CE2。本实施例提出一种DetNet网络中TSN相关信息的通告功能，提出采用控制面BGP/PCEP flowspec的方法，通过定义TSN流的过滤规则及操作等，完成TSN流与DetNet流的映射及相关信息的通告等，从而实现DetNet与TSN之间的交互。
当DetNet域为SRv6网络时，流程如下。
控制器下发配置消息到PE1及PE2节点，其中携带本申请提出的流过滤规 则及映射操作，完成PE1节点的TSN流过滤、识别及转发配置，完成PE2节点的DetNet流识别、过滤及转发配置。
CE1发送TSN流到PE1节点，PE1节点收到TSN报文后，根据控制面配置，接收并过滤TSN报文，并映射到对应的DetNet流，即映射到DetNet SRv6的Flow-ID，通过DetNet MPLS转发到PE2节点。
PE2节点接收到报文后，根据控制面配置，接收并过滤DetNet报文，并映射到TSN流及其TSN profile，并将该TSN流转发到CE2。
在一个示例性的实施方式中，图9是本申请实施例提供的一种消息交互装置的示意图，本实施例可适用于DetNet网络和TSN网络进行信息交互的情况，该装置配置于第一通信节点中，该第一通信节点的消息交互装置可采用软件和/或硬件的方式实现。
如图9所示，本申请实施例提供的消息交互装置主要包括接收模块91和过滤及映射模块92。
接收模块91，被配置为接收第二通信节点发送的时间敏感网络(TSN)配置消息，其中，所述TSN配置消息中携带流过滤信息和流映射信息。
过滤及映射模块92，被配置为基于所述TSN配置消息进行报文过滤及映射。
在一个示例性的实施方式中，所述第一通信节点是确定性网络(DetNet)域的入口边缘节点，或，所述第一通信节点DetNet域的入口边缘节点。
在一个示例性的实施方式中，在所述第一通信节点是入口边缘节点的情况下，所述流过滤信息包括：介质访问控制(MAC)掩码，其中，所述MAC掩码用于识别和过滤TSN流。
在一个示例性的实施方式中，在所述第一通信节点是入口边缘节点的情况下，所述流映射信息包括：确定性网络(DetNet)流标识，所述DetNet流标识唯一标识一条DetNet流，用于识别DetNet流。
在一个示例性的实施方式中，在所述第一通信节点是入口边缘节点的情况下，所述流映射信息包括：报文序列号，所述报文序列号在置位指令处于预设状态的情况下携带，所述报文序列号标识唯一一个DetNet报文，用于DetNet报文复制与消除功能。
在一个示例性的实施方式中，在所述第一通信节点是入口边缘节点的情况下，过滤及映射模块92，是被配置为基于MAC掩码识别并过滤TSN报文；基于所述流映射信息将TSN报文映射到对应的DetNet流。
在一个示例性的实施方式中，在所述第一通信节点是出口边缘节点的情况下，所述流过滤信息包括：DetNet流标识，其中，所述流过滤信息中的DetNet流标识用于过滤DetNet流。
在一个示例性的实施方式中，在所述第一通信节点是出口边缘节点的情况下，所述流映射信息包括如下一个或多个：TSN配置文件类型；TSN配置文件长度；TSN配置文件，其中，所述TSN配置文件用于携带TSN信息。
在一个示例性的实施方式中，在所述第一通信节点是出口边缘节点的情况下，过滤及映射模块92，是被配置为基于所述流过滤信息中的DetNet流标识识别并过滤DetNet报文；基于所述流映射信息将过滤后的DetNet报文映射到对应的TSN流和TSN配置文件。
本实施例中提供的消息交互装置可执行本申请任意实施例所提供的消息交互方法，具备执行该方法相应的功能模块。未在本实施例中描述的技术细节，可参见本申请任意实施例所提供的消息交互方法。
值得注意的是，上述消息交互装置的实施例中，所包括的各个单元和模块只是按照功能逻辑进行划分的，但并不局限于上述的划分，只要能够实现相应的功能即可；各功能单元的名称也只是为了便于相互区分，并不用于限制本申请的保护范围。
在一个示例性的实施方式中，图10是本申请实施例提供的另一种消息交互装置的示意图，本实施例可适用于DetNet网络和TSN网络进行信息交互的情况，该装置配置于第二通信节点中，该第二通信节点的消息交互装置可采用软件和/或硬件的方式实现。
如图10所示，本申请实施例提供的消息交互装置主要包括配置模块101和发送模块102。
配置模块101，被配置为基于确定性需求确定时间敏感网络(TSN)配置消息。
发送模块102，被配置为将所述TSN配置消息发送至第一通信节点，所述TSN消息用于第一通信节点进行报文过滤及映射。
在一个示例性的实施方式中，所述TSN配置消息的协议类型包括如下一个或多个：在配置边界网关协议(BGP)流的情况下，所述TSN配置消息的协议类型是BGP；在配置路径计算协议(PCEP)流的情况下，所述TSN配置消息的协议类型是PCEP。
在一个示例性的实施方式中，在所述第一通信节点是入口边缘节点的情况下，所述流过滤信息包括：介质访问控制(MAC)掩码；所述流映射信息包括：确定性网络(DetNet)流标识和报文序列号。
在一个示例性的实施方式中，在所述第一通信节点是出口边缘节点的情况下，所述流过滤信息包括：DetNet流标识，所述流映射信息包括如下一个或多个：TSN配置文件类型；TSN配置文件长度；TSN配置文件。
本实施例中提供的消息交互装置可执行本申请任意实施例所提供的消息交互方法，具备执行该方法相应的功能模块。未在本实施例中描述的技术细节，可参见本申请任意实施例所提供的消息交互方法。
值得注意的是，上述消息交互装置的实施例中，所包括的各个单元和模块只是按照功能逻辑进行划分的，但并不局限于上述的划分，只要能够实现相应的功能即可；各功能单元的名称也只是为了便于相互区分，并不用于限制本申请的保护范围。
本申请实施例还提供一种设备，图11是本申请实施例提供的一种设备的结构示意图，如图11所示，该设备包括处理器111、存储器112、输入装置113、输出装置114和通信装置115；设备中处理器111的数量可以是一个或多个，图11中以一个处理器111为例；设备中的处理器111、存储器112、输入装置113和输出装置114可以通过总线或其他方式连接，图11中以通过总线连接为例。
存储器112作为一种计算机可读存储介质，可用于存储软件程序、计算机可执行程序以及模块，如本申请实施例中的消息处理方法对应的程序指令/模块(例如，消息交互装置中的接收模块91、过滤及映射模块92)，又如本申请实施例中的消息交互方法对应的程序指令/模块(例如，消息交互装置中的配置模块101和发送模块102)。处理器111通过运行存储在存储器112中的软件程序、指令以及模块，从而执行设备的各种功能应用以及数据处理，即实现本申请实施例提供的任一消息交互方法。
存储器112可主要包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序；存储数据区可存储根据设备的使用所创建的数据等。存储器112可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他非易失性固态存储器件。在一些实例中，存储器112可包括相对于处理器111远程设置的存储器，这些远程存储器可以通过网络连接至设备。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
输入装置113可用于接收输入的数字或字符信息，以及产生与设备的用户设置以及功能控制有关的键信号输入。输出装置114可包括显示屏等显示设备。
通信装置115可以包括接收器和发送器。通信装置115设置为根据处理器111的控制进行信息收发通信。
在上述设备是第一通信节点的情况下，处理器111通过运行存储在系统存储器112中的程序，从而执行各种功能应用以及数据处理，例如实现本申请实施例所提供的消息交互方法，该方法包括：接收第二通信节点发送的时间敏感网络(TSN)配置消息，其中，所述TSN配置消息中携带流过滤信息和流映射信息；基于所述TSN配置消息进行报文过滤及映射。
本领域技术人员可以理解，处理器111还可以实现本申请任意实施例所提供的消息交互方法的技术方案。该设备的硬件结构以及功能可参见本实施例的内容解释。
在上述设备是第二通信节点的情况下，处理器111通过运行存储在系统存储器112中的程序，从而执行各种功能应用以及数据处理，例如实现本申请实施例所提供的消息交互方法，该方法包括：基于确定性需求确定时间敏感网络(TSN)配置消息；将所述TSN配置消息发送至第一通信节点，所述TSN消息用于第一通信节点进行报文过滤及映射。
本领域技术人员可以理解，处理器610还可以实现本申请任意实施例所提供的消息交互方法的技术方案。该设备的硬件结构以及功能可参见本实施例的内容解释。
在一个示例性的实施方式中，本申请实施例还提供一种包含计算机可执行指令的存储介质，所述计算机可执行指令在由计算机处理器执行时用于执行一种消息交互方法，所述方法应用于第一通信节点，包括：接收第二通信节点发送的时间敏感网络(TSN)配置消息，其中，所述TSN配置消息中携带流过滤信息和流映射信息；基于所述TSN配置消息进行报文过滤及映射。
本申请实施例所提供的一种包含计算机可执行指令的存储介质，其计算机可执行指令不限于如上所述方法的操作，还可以执行本申请任意实施例所提供的消息交互方法中的相关操作。
本申请实施例还提供一种包含计算机可执行指令的存储介质，所述计算机可执行指令在由计算机处理器执行时用于执行一种信息交互方法，所述方法应用于第二通信节点，包括：基于确定性需求确定时间敏感网络(TSN)配置消息；将所述TSN配置消息发送至第一通信节点，所述TSN消息用于第一通信节点进 行报文过滤及映射。
本申请实施例所提供的一种包含计算机可执行指令的存储介质，其计算机可执行指令不限于如上所述方法的操作，还可以执行本申请任意实施例所提供的消息交互方法中的相关操作。
通过以上关于实施方式的描述，所属领域的技术人员可以清楚地了解到，本申请可借助软件及必需的通用硬件来实现，也可以通过硬件实现，但很多情况下前者是可选的实施方式。基于这样的理解，本申请的技术方案本质上或者说对相关技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品可以存储在计算机可读存储介质中，如计算机的软盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、闪存(FLASH)、硬盘或光盘等，包括多个指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述的方法。
以上所述，仅为本申请的示例性实施例而已，并非用于限定本申请的保护范围。
本领域内的技术人员应明白，术语“用户终端”涵盖任何适合类型的无线用户设备，例如移动电话、便携数据处理装置、便携网络浏览器或车载移动台。
一般来说，本申请的多种实施例可以在硬件或专用电路、软件、逻辑或其任何组合中实现。例如，一些方面可以被实现在硬件中，而其它方面可以被实现在可以被控制器、微处理器或其它计算装置执行的固件或软件中，尽管本申请不限于此。
本申请的实施例可以通过移动装置的数据处理器执行计算机程序指令来实现，例如在处理器实体中实现，或者通过硬件来实现，或者通过软件和硬件的组合来实现。计算机程序指令可以是汇编指令、指令集架构(Instruction Set Architecture，ISA)指令、机器指令、机器相关指令、微代码、固件指令、状态设置数据、或者以一种或多种编程语言的任意组合编写的源代码或目标代码。
本申请附图中的任何逻辑流程的框图可以表示程序步骤，或者可以表示相互连接的逻辑电路、模块和功能，或者可以表示程序步骤与逻辑电路、模块和功能的组合。计算机程序可以存储在存储器上。存储器可以具有任何适合于本地技术环境的类型并且可以使用任何适合的数据存储技术实现，例如但不限于只读存储器(ROM)、随机访问存储器(RAM)、光存储器装置和系统(数码多功能光碟(Digital Video Disc，DVD)或CD(Compact Disk，光盘))等。 计算机可读介质可以包括非瞬时性存储介质。数据处理器可以是任何适合于本地技术环境的类型，例如但不限于通用计算机、专用计算机、微处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、可编程逻辑器件(Field Programmable Gate Array，FPGA)以及基于多核处理器架构的处理器。

Claims (18)

  1. 一种信息交互方法，应用于第一通信节点，包括：
    接收第二通信节点发送的时间敏感网络TSN配置消息，其中，所述TSN配置消息中携带流过滤信息和流映射信息；
    基于所述TSN配置消息进行报文过滤及报文映射。
  2. 根据权利要求1所述的方法，其中，所述第一通信节点是确定性网络DetNet域的入口边缘节点，或，所述第一通信节点是DetNet域的出口边缘节点。
  3. 根据权利要求1所述的方法，其中，在所述第一通信节点是DetNet域的入口边缘节点的情况下，所述流过滤信息包括：介质访问控制MAC掩码，其中，所述MAC掩码用于识别和过滤TSN流。
  4. 根据权利要求1所述的方法，其中，在所述第一通信节点是DetNet域的入口边缘节点的情况下，所述流映射信息包括：DetNet流标识，其中，所述DetNet流标识唯一标识一条DetNet流，用于识别DetNet流。
  5. 根据权利要求1所述的方法，其中，在所述第一通信节点是DetNet域的入口边缘节点的情况下，所述流映射信息包括：报文序列号，其中，所述报文序列号在置位指令处于预设状态的情况下携带，所述报文序列号唯一标识一个DetNet报文，用于DetNet报文复制与消除功能。
  6. 根据权利要求1所述的方法，其中，在所述第一通信节点是DetNet域的入口边缘节点的情况下，所述基于所述TSN配置消息进行报文过滤及报文映射，包括：
    基于MAC掩码识别并过滤TSN报文；
    基于所述流映射信息将过滤后的TSN报文映射到所述流映射信息对应的DetNet流。
  7. 根据权利要求1所述的方法，其中，在所述第一通信节点是DetNet域的出口边缘节点的情况下，所述流过滤信息包括：DetNet流标识，其中，所述流过滤信息中的DetNet流标识用于过滤DetNet流。
  8. 根据权利要求1所述的方法，其中，在所述第一通信节点是DetNet域的出口边缘节点的情况下，所述流映射信息包括如下至少之一：
    TSN配置文件类型；
    TSN配置文件长度；
    TSN配置文件，其中，所述TSN配置文件用于携带TSN信息。
  9. 根据权利要求1所述的方法，其中，在所述第一通信节点是DetNet域的 出口边缘节点的情况下，所述基于所述TSN配置消息进行报文过滤及报文映射，包括：
    基于所述流过滤信息中的DetNet流标识识别DetNet报文并过滤DetNet报文；
    基于所述流映射信息将过滤后的DetNet报文映射到所述流映射信息对应的TSN流和TSN配置文件。
  10. 一种信息交互方法，应用于第二通信节点，包括：
    基于确定性需求确定时间敏感网络TSN配置消息；
    将所述TSN配置消息发送至第一通信节点，其中，所述TSN消息用于第一通信节点进行报文过滤及报文映射。
  11. 根据权利要求10所述的方法，其中，所述第二通信节点是控制器。
  12. 根据权利要求10所述的方法，其中，所述TSN配置消息的协议类型包括如下至少之一：
    在配置边界网关协议BGP流的情况下，所述TSN配置消息的协议类型是BGP；
    在配置路径计算协议PCEP流的情况下，所述TSN配置消息的协议类型是PCEP。
  13. 根据权利要求10所述的方法，其中，在所述第一通信节点是DetNet域的入口边缘节点的情况下，所述流过滤信息包括：介质访问控制MAC掩码；所述流映射信息包括：确定性网络DetNet流标识和报文序列号。
  14. 根据权利要求10所述的方法，其中，在所述第一通信节点是DetNet域的出口边缘节点的情况下，所述流过滤信息包括：DetNet流标识，所述流映射信息包括如下至少之一：TSN配置文件类型；TSN配置文件长度；TSN配置文件。
  15. 一种消息交互装置，所述装置配置于第一通信节点，包括：
    接收模块，配置为接收第二通信节点发送的时间敏感网络TSN配置消息，其中，所述TSN配置消息中携带流过滤信息和流映射信息；
    过滤及映射模块，配置为基于所述TSN配置消息进行报文过滤及报文映射。
  16. 一种消息交互装置，所述装置配置于第二通信节点，包括：
    配置模块，配置为基于确定性需求确定时间敏感网络TSN配置消息；
    发送模块，配置为将所述TSN配置消息发送至第一通信节点，其中，所述 TSN消息用于第一通信节点进行报文过滤及报文映射。
  17. 一种设备，包括：
    至少一个处理器；
    存储器，配置为存储至少一个程序；
    当所述至少一个程序被所述至少一个处理器执行时，所述至少一个处理器实现如权利要求1-14任一项所述的方法。
  18. 一种存储介质，存储有计算机程序，所述计算机程序被处理器执行时实现权利要求1-14任一项所述的方法。
PCT/CN2021/079032 2020-03-30 2021-03-04 消息交互方法、装置、设备和存储介质 WO2021196967A1 (zh)

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