WO2019183919A1 - Procédé et appareil pour mise en réseau convergée - Google Patents

Procédé et appareil pour mise en réseau convergée Download PDF

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Publication number
WO2019183919A1
WO2019183919A1 PCT/CN2018/081318 CN2018081318W WO2019183919A1 WO 2019183919 A1 WO2019183919 A1 WO 2019183919A1 CN 2018081318 W CN2018081318 W CN 2018081318W WO 2019183919 A1 WO2019183919 A1 WO 2019183919A1
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Prior art keywords
network
node
data packet
mesh
transmission protocol
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PCT/CN2018/081318
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English (en)
Chinese (zh)
Inventor
刘德
房璟
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华为技术有限公司
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Priority to CN201880071566.XA priority Critical patent/CN111316685A/zh
Priority to PCT/CN2018/081318 priority patent/WO2019183919A1/fr
Publication of WO2019183919A1 publication Critical patent/WO2019183919A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks

Definitions

  • the present application relates to the field of communications and, more particularly, to a method and apparatus for converged networking.
  • the wireless mesh MESH network is composed of a MESH router and a MESH client.
  • the mesh network MESH router forms a backbone network and is connected to the Internet, and is responsible for providing a multi-hop wireless Internet connection for the MESH client.
  • wireless communication is performed at the MAC layer of WiFi based on the IEEE802.11s protocol, including automatic device discovery, automatic topology, path learning, and packet forwarding.
  • the device form of the home user is diverse.
  • WiFi connection between multiple nodes Access Point, AP
  • the WiFi-based IEEE802.11s MESH protocol works in the MAC layer of WiFi, and cannot complete network interworking in different media.
  • the WiFi MESH network and the Ethernet nodes cannot directly communicate with each other, and even the 2.4G WiFi MESH network and the 5G WiFi MESH network cannot communicate with each other.
  • the UE establishes the MESH network link through WiFi, it cannot integrate other heterogeneous media into the unified network, and cannot play the advantages of dynamic multi-hop, self-organization, self-healing and other aspects of the MESH network in heterogeneous media.
  • the present invention provides a method, an apparatus, and a communication system for merging networking, which can implement interworking between networks of different media, improve user deployment, and improve user experience.
  • a method for converging networking is provided, which is applied to a communication system including at least two networks, each network including at least two nodes, and nodes in each network communicate based on a first transmission protocol At least one node in the first network is capable of communicating with the at least one node in the second network based on the second transmission protocol, the method comprising:
  • the first node of the first network receives the first data packet from the second node in the second network, where the first data packet is the second node received by the second node of the second network from the fourth node of the second network After the second data packet, the data packet generated after the second transmission protocol is encapsulated, where the second data packet carries the identification information of the fourth node in the second network;
  • the first node of the first network decapsulates the first data packet according to the second transmission protocol, to obtain the second data packet;
  • the first node of the first network sends the second data packet to the third node of the first network.
  • the network identifier information of the second network is encapsulated, carried in the data packet, and forwarded to the first network through another different medium network, so that the network information of the second network is extended to different media.
  • network-based interworking between multiple different links is implemented in a multi-routed home hybrid network, and a unified cross-network mesh network is established to enhance the user experience.
  • the first node of the first network decapsulates the first data packet according to the second transmission protocol, to obtain the second data packet, including:
  • the first node of the first network acquires the identifier information of the fourth node in the second network carried by the second data packet;
  • the first node of the first network sends an extended address resolution protocol ARP request message to the third node of the first network, where the ARP request message carries the identifier information of the fourth node in the second network.
  • the first node of the first network When a data packet needs to be transmitted from the first network to the second network through the different medium, the first node of the first network extends the network layer, and after receiving the first data packet, the first package is encapsulated in the extended network layer, that is, The identification information of the second network is implemented as a load part.
  • the networking information of the second network is encapsulated in the data packet and transmitted to the second node of the second network, so that the network topology information of the second network is transmitted to each routing node of the first network.
  • the second network is a wireless mesh MESH network
  • the identifier information of the fourth node in the second network includes the fourth network in the second network.
  • the identifier information of the second network may include information such as networking information, link information, or network IP address of the second network, and the identifier information of the second network is encapsulated in the data packet and transmitted to the first network, thereby The network topology information of the second network is transmitted to each routing node of the first network.
  • the first transmission protocol is a wireless MESH mesh network protocol
  • the second transmission protocol is an Ethernet protocol
  • the first network and the second network are wireless MESH mesh networks
  • the first network and the second network are connected by Ethernet.
  • the information of the MESH network of the second network such as networking information, link information, or network IP address, is encapsulated in a data packet, and transmitted to the first node of the first network through the Ethernet, thereby forming networking information and a chain.
  • Information such as road information or network IP address is transmitted to the first node of the first network, and further transmitted to other routing nodes, thereby extending the wireless MESH mesh network protocol to the wired network, so that each node of node 1 - node 6 All can form a mesh network to achieve network interworking.
  • a method for merging networking where a network includes at least two nodes, each network includes at least two nodes, and nodes of each network communicate according to a first transmission protocol, At least one node in the first network is capable of communicating with at least one node in the second network based on a second transmission protocol, the method comprising:
  • the second node of the second network receives the second data packet from the fourth node of the second network, the second data packet is a data packet generated based on the first transmission protocol, and the second data packet carries the second data packet Identification information of the fourth node in the network;
  • the second node of the second network encapsulates the second data packet according to the second transmission protocol to generate a first data packet, where the identifier information of the fourth node in the second network is used as the first data packet. load;
  • the second node of the second network sends the second data packet to the first node of the first network.
  • the second node of the second network encapsulates the second data packet according to the second transmission protocol to generate a first data packet, including:
  • the second node of the second network acquires the identifier information of the fourth node in the second network carried by the second data packet;
  • the second node of the second network sends an extended address resolution protocol ARP request message to the first node of the first network, where the ARP request message carries the identifier information of the fourth node in the second network.
  • the second network is a wireless mesh MESH network
  • the identifier information of the fourth node in the second network includes the second network The identifier MESH ID of the wireless mesh network of the fourth node.
  • the first transmission protocol is a wireless MESH mesh network protocol
  • the second transmission protocol is an Ethernet protocol
  • a method for merging networking characterized in that, in a communication system including at least two networks, each network includes at least two nodes, and nodes in each network are based on a first The transport protocol communicates, and at least one node in the first network is capable of communicating with the at least one node in the second network based on the second transport protocol, the method comprising:
  • the third node of the first network receives the second data packet from the first node in the first network, where the second data packet is obtained by decapsulating the first data packet by the first node in the first network a data packet, the first data packet is a data packet generated after the second node of the second network receives the second data packet from the fourth node of the second network, and is encapsulated according to the second transmission protocol, where The second data packet carries the identification information of the fourth node in the second network;
  • the third node of the first network obtains the identifier information of the fourth node in the second network from the second data packet, and determines the ID of the fourth node according to the identifier information of the fourth node in the second network, based on The first transmission protocol communicates with a fourth node of the second network.
  • the second network is a wireless mesh MESH network
  • the identifier information of the fourth node in the second network includes the second network The identifier MESH ID of the wireless mesh network of the fourth node.
  • the first transmission protocol is a wireless mesh network protocol
  • the second transmission protocol is an Ethernet protocol
  • the networking method provided by the foregoing first aspect, the second aspect, and the third aspect may be specifically used in a hybrid networking scenario composed of a WiFi-based MESH network and an Ethernet.
  • the MESH network includes a first network composed of a node 4, a node 5, and a node 6, and a second network composed of a node 1, a node 2, and a node 3.
  • the data packet of the node 1 or the node 2 is sent to the node 3, and the node 3 has two protocol stack architectures, a MESH protocol stack architecture and an Ethernet protocol stack architecture.
  • the node 3 receives the data packet, and the data packet carries the MESH ID information of the node 1 or the node 2.
  • the data packet is inside the node 3.
  • the node 3 obtains the MESH ID information by decapsulating the data packet, and extends the IP layer to encapsulate the MESH ID information in the extended IP layer.
  • the MESH ID information is transmitted to the node 5.
  • the neighboring nodes perform active probe (probe request/response) and passive beacon (mesh beacon) to refresh the neighbor entries.
  • the broadcast learning ARP is extended, that is, the MESH ID information is carried in the ARP Request and transmitted to the node 5.
  • the node 5 receives the data packet carrying the MESH ID information, and then decapsulates the data packet to obtain the MESH ID information.
  • the protocol stack in which node 5 and node 3 interact is an Ethernet protocol stack, and the obtained MESH ID information is encapsulated in an extended IP layer.
  • the MESH entry/exit address in the original MESH network packet format is removed, and the source/destination address between adjacent APs is encapsulated to be forwardable in Ethernet format, only Includes the 2-MAC address of the device source/destination address.
  • the MESH ID information is also encapsulated in the data packet, so that the node 5 is transmitted to the node 4 or the node. Carry the MESH ID at 6. Then, the node 4 or the node 6 obtains the identification information of the node 1 or the node 2, so that each node can form a fused mesh network, and play multi-hop, self-organization, self-healing, etc. in the packet forwarding process.
  • the neighboring entry is updated by the discovery of the neighboring node.
  • each node has a reporting function, that is, when the neighboring entry changes, the upper node and the primary node are advertised.
  • the master node 1 forms a network node topology and implements a mesh topology of all nodes.
  • the path learning process the path of each node to the master node is learned based on the RANN mechanism of the master node.
  • the RANN message body is carried in the extended IP layer, and the RANN message body carries the MESH ID, and the message is forwarded through the virtual interface between different media.
  • node 4 or node 6 obtains the identification information of node 1 or node 2, so that for any node, such as node 6, when there is data to be sent to node 1, there is no need to go through node 5, node A series of forwarding of 3 can directly establish communication with node 1 and transfer data directly from node 6 to node 1.
  • a fourth aspect provides a node device, which is a first node device, is applied to a communication system including at least two networks, each network includes at least two node devices, and between each node device of the network Communicating based on the first transmission protocol, the at least one node device in the first network being capable of communicating with the at least one node device in the second network based on the second transmission protocol, the first node device comprising:
  • the second node device in the second network And receiving, by the second node device in the second network, the first data packet, where the first data packet is after the second data packet received by the second node of the second network from the fourth node of the second network And the data packet generated after the second transmission protocol is encapsulated, where the second data packet carries the identifier information of the fourth node in the second network;
  • a processing unit configured to decapsulate the first data packet according to the second transmission protocol, to obtain a second data packet
  • a sending unit configured to send the second data packet to the third node device of the first network.
  • the processing unit is further configured to acquire the identifier information of the fourth node in the second network carried by the second data packet;
  • the sending unit is further configured to send an extended address resolution protocol ARP request message to the third node of the first network, where the ARP request message carries the identifier information of the fourth node in the second network.
  • the second network is a wireless mesh MESH network
  • the identifier information of the fourth node in the second network includes the second network The identifier MESH ID of the wireless mesh network of the fourth node.
  • the first transmission protocol is a wireless MESH mesh network protocol
  • the second transmission protocol is an Ethernet protocol
  • a node device where the node device is a second node device, and is applied to a communication system including at least two networks, each network includes at least two node devices, and between each node device of the network Communicating based on the first transmission protocol, the at least one node device in the first network being capable of communicating with the at least one node device in the second network based on the second transmission protocol, the second node device comprising:
  • a receiving unit configured to receive a second data packet from a fourth node device of the second network, where the second data packet is a data packet generated based on the first transmission protocol, and the second data packet carries the second network packet Identification information of the fourth node;
  • a processing unit configured to encapsulate the second data packet according to the second transmission protocol, to generate a first data packet, where the identifier information of the fourth node in the second network is used as a load of the first data packet;
  • a sending unit configured to send the second data packet to the first node device of the first network.
  • the processing unit is further configured to acquire the identifier information of the fourth node in the second network that is carried by the second data packet;
  • the sending unit is further configured to send an extended address resolution protocol ARP request message to the first node of the first network, where the ARP request message carries the identifier information of the fourth node in the second network.
  • the second network is a wireless mesh MESH network
  • the identifier information of the fourth node in the second network includes the second network The identifier MESH ID of the wireless mesh network of the fourth node.
  • the first transmission protocol is a wireless MESH mesh network protocol
  • the second transmission protocol is an Ethernet protocol
  • a node device where the node device is a third node device, and is applied to a communication system including at least two networks, each network includes at least two node devices, and node devices in each network Communicating based on the first transmission protocol, the at least one node device in the first network being capable of communicating with the at least one node device in the second network based on the second transmission protocol, the third node device comprising:
  • a receiving unit configured to receive a second data packet from the first node device in the first network, where the second data packet is data obtained by decapsulating the first data packet by the first node in the first network a packet, the first data packet is a data packet generated after the second node of the second network receives the second data packet from the fourth node of the second network, and is encapsulated according to the second transmission protocol, where the The second data packet carries the identification information of the fourth node in the second network;
  • a processing unit configured to obtain, from the second data packet, identifier information of the fourth node in the second network, and determine an ID of the fourth node according to the identifier information of the fourth node in the second network, based on the first
  • the transport protocol communicates with a fourth node device of the second network.
  • the second network is a wireless mesh MESH network
  • the identifier information of the fourth node in the second network includes the fourth node in the second network
  • the identifier of the wireless mesh network is the MESH ID.
  • the first transmission protocol is a wireless MESH mesh network protocol
  • the second transmission protocol is an Ethernet protocol
  • a node device being a first node device, including a transceiver, a processor, and a memory.
  • the processor is configured to control a transceiver transceiver signal for storing a computer program, the processor for calling and running the computer program from the memory, such that the terminal device performs any of the above first aspect and the first aspect A method in any of the possible implementations of the implementation.
  • a node device is provided, the node device being a second node device, including a transceiver, a processor, and a memory.
  • the processor is configured to control a transceiver transceiver signal for storing a computer program, the processor for calling and running the computer program from the memory, such that the terminal device performs any one of the second aspect and the second aspect described above A method in any of the possible implementations of the implementation.
  • a node device is provided, the node device being a third node device, including a transceiver, a processor, and a memory.
  • the processor is configured to control a transceiver transceiver signal for storing a computer program, the processor for calling and running the computer program from the memory, such that the terminal device performs any of the above third aspect and the third aspect A method in any of the possible implementations of the implementation.
  • a computer program product comprising: computer program code, when the computer program code is run on a computer, causing the computer to perform the method of the above aspects.
  • a computer readable medium storing program code for causing a computer to perform the method of the above aspects when the computer program code is run on a computer.
  • a chip system comprising a processor for supporting a first node device or a second node device or a third node device to implement functions involved in the above aspects, for example, generating, Receive, determine, transmit, or process data and/or information involved in the above methods.
  • the chip system further comprises a memory for storing necessary program instructions and data of the terminal device.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • a chip system comprising a processor for supporting a second node device to implement functions involved in the above aspects, for example, generating, receiving, determining, transmitting, or processing the above method Data and/or information involved in this.
  • the chip system further comprises a memory for storing necessary program instructions and data of the terminal device.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • a chip system comprising a processor for supporting a third node device to implement functions involved in the above aspects, for example, generating, receiving, determining, transmitting, or processing the above method Data and/or information involved in this.
  • the chip system further comprises a memory for storing necessary program instructions and data of the terminal device.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • FIG. 1 is a schematic diagram of an example of a tree network provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of an example of a mesh networking provided by an embodiment of the present application.
  • FIG. 3 is a structural diagram of a wireless MESH protocol stack provided by an embodiment of the present application.
  • FIG. 4 is a structural diagram of a node provided by an embodiment of the present application.
  • FIG. 5 is a layered architecture diagram of a node protocol according to an embodiment of the present application.
  • FIG. 6 is a flowchart of an example of packet processing according to an embodiment of the present application.
  • FIG. 7 is a schematic diagram of an example of a fusion networking method provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram of another example of a fusion networking method provided by an embodiment of the present application.
  • FIG. 9 is a schematic diagram of another example mesh network provided by an embodiment of the present application.
  • FIG. 10 is a schematic diagram of another example of a convergence networking method provided by an embodiment of the present application.
  • FIG. 11 is a schematic diagram of link processing provided by an embodiment of the present application.
  • FIG. 12 is a schematic diagram of path learning provided by an embodiment of the present application.
  • FIG. 13 is a schematic block diagram of an example node device provided by an embodiment of the present application.
  • FIG. 14 is a schematic block diagram of another example node device provided by an embodiment of the present application.
  • FIG. 15 is a schematic block diagram of another example node device provided by an embodiment of the present application.
  • FIG. 16 is a schematic block diagram of an example communication device provided by an embodiment of the present application.
  • FIG. 17 is a schematic block diagram of another example system chip according to an embodiment of the present application.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • the terminal device in the embodiment of the present application may refer to a user equipment, an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or User device.
  • the terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), with wireless communication.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • the network device in the embodiment of the present application may be a device for communicating with the terminal device, and the network device may be a Global System of Mobile communication (GSM) system or Code Division Multiple Access (CDMA).
  • Base Transceiver Station which may also be a base station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) system, or an evolved base station in an LTE system (Evolutional The NodeB, eNB or eNodeB) may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or the network device may be a relay station, an access point, an in-vehicle device, a wearable device, and a future.
  • the network device in the 5G network or the network device in the PLMN network in the future is not limited in this embodiment.
  • the device form of the home user is diverse, and different terminal devices have different network requirements.
  • the family housing is a platform that involves the network needs of various terminal devices.
  • Mobile phones, PCs, NAS, game consoles, and smart home devices need to integrate network devices and other terminal devices to build home devices. Efficient management system for residential facilities and family schedules.
  • Network communication technology is a key technology in smart home integration. It usually uses short-range wireless communication technology to communicate between gateways and terminal devices. Due to the limited transmission distance between the gateway and the terminal device, the smart home network realized by the short-range wireless communication technology cannot cover the device far away from the gateway.
  • the existing general networking technology is based on the repeater Repeater architecture.
  • Its network architecture is a tree structure, which is a network architecture based on a primary node and multiple Repeater routing nodes. It should be understood that, in the network system provided by the embodiment of the present application, the description includes only one master node as an example.
  • node 1 is a master node or a master node connected to the Internet
  • Node 1 is centered and branches step by step, and communication can be achieved between each node.
  • Such a networking mode is shaped like an inverted tree, with a root at the top (for example, node 1) and a branch below the tree root (for example, node 2 and node 3 of the primary branch), and each branch can be further taped.
  • Branch for example, branch node 6 and node 7 of node 5
  • all nodes except the master node 1 in this embodiment are referred to as routing nodes or routing nodes, wherein the routing node forwards messages of the autonomous node to other nodes.
  • the routing node or the terminal device sends the collected data directly to the primary node or to the primary node through the routing node.
  • the master node (for example, node 1) can communicate with the routing node in two-way communication, and can also communicate with terminal devices (such as mobile phone terminals, PCs, etc.), for example, using WiFi technology or the like.
  • terminal devices such as mobile phone terminals, PCs, etc.
  • the primary node can also communicate with other primary nodes.
  • the master node may send a message (eg, control information) to the terminal device either directly or via the routing node, or may receive data transmitted from the terminal device directly or via the routing node.
  • the routing node is used to forward messages in the network system, for example, including a sensor device capable of collecting data, and the routing node also has a wireless routing function, and the routing node can communicate with the primary node, the terminal device, and other routing nodes in two directions, the primary node and the terminal.
  • the device can communicate via a plurality of cascaded routing nodes. In this way, the terminal device that is far away from the primary node (for example, not within the communication radius of the primary node) can also be included in the coverage of a network system.
  • the terminal device does not have the routing forwarding function, but can communicate with the primary node or the routing node in two directions (for example, adopting 433M wireless technology).
  • the terminal device can receive the message sent from the master node, and the terminal device can also collect the data and send the data to the intermediate node directly or via the routing node, and then the master node can upload the data to other external servers for statistical analysis. And further control.
  • the embodiments of the present application are not limited thereto.
  • Each network node in the network system 100 can hang multiple Repeater devices, or multiple terminal devices (for example, the mobile phone 111, the smart home device 112, the PC device 113, etc. in FIG. 1), but it can be seen that each A network node has only one uplink.
  • FIG. 1 is only a schematic diagram of the tree network, wherein the number of nodes and the number of branch nodes are not limited, and the node that each terminal device accesses may be any node, which is not limited in this embodiment of the present application. .
  • the intermediate node router is very easy to be a bottleneck. For example, if the communication between the mobile phone 111 and the PC device 113 in FIG. 1 needs to pass through the node 1, the bottleneck of the intermediate node (for example, the node 1) is caused; and the communication between the smart home device 112 and the PC device 113 is required.
  • node 5, node 3, and node 1 Passing through node 5, node 3, and node 1, then bottlenecks are created for intermediate nodes (e.g., node 5, node 3, and node 1). In addition, in addition to the routing nodes and their connected lines, any node or its connected line failure will affect the system.
  • the mesh network based on IEEE802.11s in the prior art is a mesh network based on WiFi type, such as a single 2.4G WiFi mesh network or a single 5G WiFi mesh network.
  • WiFi utilizes a wireless access point AP to provide network access services for terminal devices, which greatly satisfies people's needs for the network.
  • the WiFi access point adopts a single-hop access mode, which is limited by the transmission power of the WiFi access point, and its coverage is relatively limited. To obtain a wider coverage, it is necessary to deploy more WiFi connections. Incoming points, which increases the overhead of the network.
  • the wireless MESH mesh network developed with Ad hoc network is a dynamic multi-hop, self-organizing and self-healing wireless network.
  • Nodes in the network can automatically establish Ad Hoc structure and maintain mesh connectivity.
  • Each node At the same time, it is a router that can perform discovery and maintain the function of routing to other nodes.
  • Two terminal devices that cannot communicate directly can also perform packet forwarding and other communication by other nodes.
  • Ad hoc network when two hosts are in communication coverage with each other, they can communicate directly, but because the communication coverage is limited, if two distant hosts want to communicate, they need to pass between them.
  • the forwarding of the node can be implemented. Therefore, the host is also a router and is responsible for finding routes and forwarding packets.
  • the routes are generally composed of multiple hops. Due to the dynamic multi-hop characteristics of the MESH network, it can effectively extend the coverage of the network and reduce the deployment cost, which is a market that the major network equipment vendors of the home network seize.
  • Ethernet Ethernet wired connection is the most popular LAN technology in current applications, which largely replaces other LAN standards, such as Token Ring, Fiber Distributed Data Interface (FDDI) and Token Bus ARCNET.
  • FDDI Fiber Distributed Data Interface
  • ARCNET Token Bus ARCNET
  • Ethernet based on the IEEE802.3 protocol specifies the content of the physical layer connection, electrical signals and medium access MAC layer protocol, specifically describes the implementation of the MAC layer of the physical layer and the data link layer, in a variety of physical media
  • the CSMA/CD access method is used at various rates. Ethernet uses carrier frames with collision detection to listen to multiple access CSMA/CD mechanisms. That is, all nodes in the network can see all the information sent in the network. Therefore, we say that Ethernet is a kind of broadcast network.
  • Ethernet frame is the encapsulation of the data link layer, and the data packets of the network layer are added with the frame header and the frame tail to become data frames that can be identified by the data link layer.
  • the number of bytes used for the header and the end of the frame is fixed, the length of the Ethernet varies depending on the size of the encapsulated packet. The range is 64 to 1518 bytes (not counting 8 words). The leading word of the section).
  • Ethernet can use a variety of connection media, including coaxial cable, twisted pair and fiber.
  • the twisted pair is mostly used for connection from the host to the hub or switch, while the fiber is mainly used for cascading between switches and point-to-point links between switches and routers.
  • the coaxial cable has gradually become the main connecting medium in the early days. It tends to be eliminated.
  • the WiFi-based IEEE802.11s MESH protocol works in the MAC layer of WiFi, and cannot be interworked in different media.
  • FIG. 2 is a schematic diagram of an example of a mesh networking provided by an embodiment of the present application
  • FIG. 3 is a structural diagram of a wireless MESH protocol stack. The working principle of the IEEE802.11s MESH protocol will be described in detail below with reference to FIG. 2 and FIG. 3.
  • Each node device in the MESH network system has its own network ID.
  • the routing node on the link may store the network ID of the last hop node, and may periodically send its own network ID and the network ID of the previous hop node to the master. node.
  • the central node may obtain the dynamic topology of the entire MESH network system according to the information about the network ID of the node and the network ID of the last hop node sent by the routing node and the terminal node.
  • the master node may include a user interface and a dynamic topology map of the MESH network system may be presented on the user interface.
  • the master node may also present the dynamic topology of the MESH network system through an external device connected thereto.
  • the master node 1 and the routing nodes 2, 3 have already formed a MESH mesh network based on WiFi.
  • the mesh network composed of node 1, node 2 and node 3 data forwarding and mixing of the MAC layer are mainly implemented.
  • HWMP Hybrid Wireless MESH Protocol
  • FIG. 3 the software architecture of the wireless MESH protocol stack is mainly divided into two parts: a control plane and a data plane.
  • the MESH network node may include a MESH background management module 301, a stored path table 302, a neighbor table 303, a processing module 304, a path selection module 305, a neighbor management module 306, and a data forwarding module 307.
  • the modules in the figure are connected by a bus.
  • Only parts related to the description of the embodiments of the present application are shown in the drawings, and it should be understood that the application is not limited thereto.
  • the neighbor management module 306 in the node initiates a neighbor search, establishes a neighbor relationship, and forms an IEEE 802.11s network;
  • the data forwarding module 307 searches the path table 302 to obtain the next hop MAC address to forward the multi-hop data according to the destination MAC address of the data frame. If no valid path information exists, the path selection module 305 is triggered to initiate the path searching process.
  • the control plane includes a processing module 304, a neighbor management module 306, and a path selection module 305, which mainly implements Layer 2 path selection, neighbor establishment, and topology management functions.
  • the processing module 304 performs parsing processing on the data frames defined by IEEE802.11s and generates a specific frame format.
  • the IEEE 802.11s protocol mainly defines two types of frame formats: one is a frame for path selection; the other is a data frame used for topology formation.
  • the neighbor management module 306 implements functions such as neighbor discovery, establishing and maintaining a neighbor table.
  • the path selection module 305 implements the IEEE 802.11s Layer 2 hybrid path selection HWMP function to maintain and manage the path table.
  • the data plane mainly implements MAC layer multi-hop data forwarding and MESH data frame reception and transmission processing. After receiving a data frame, first check the validity of the data, and then determine whether the destination MAC address is sent to the local device. If not, the data forwarding module 307 is entered. Otherwise, the MAC protocol header is converted and sent directly to the upper layer protocol. After receiving the data frame, the data forwarding module 307 first searches the path table 302 according to the destination MAC address. If there is path information to the destination address, copy a data frame, replace the TA and RA fields of the IEEE802.11s protocol header, and then join. To the sending waiting queue; if there is no valid path information, the triggering path finding module initiates a path search and adds the data frame to the path repair waiting queue.
  • the node 5 accesses any node based on the WiFi-constituting MESH mesh network through the Ethernet (for example, the node 3 shown in the figure), the node 4, the node 5, and the node 6 only It can be connected to the network in the traditional Repeater bridge mode. Since the node 3 and the node 5 are connected through the Ethernet network, and the protocol stack structure between the MESH network of the WiFi and the Ethernet node is different, the data frame format is different, so that the MESH network and the Ethernet node cannot directly communicate with each other, even 2.4G. The data frame format between the WiFi MESH network and the 5G WiFi MESH network is different, and interworking cannot be achieved.
  • a user establishes a MESH network link through WiFi, other heterogeneous media cannot be integrated into the unified network, and multi-hop, self-organization, self-healing, and the like cannot be utilized in heterogeneous media.
  • the data forwarding module 307 performs data forwarding, but in the WiFi-based MESH mesh network, the packet address generated by the encapsulation is generated.
  • a forwarding format based on a 6-MAC address (eg, including device source/destination address, MESH entry/exit address, source/destination address between adjacent APs), where the address is 2-MAC address (for example, including Device source address/destination address) forwarding, in other words, in the process of forwarding the data packet to node 5 via node 3, stripping the MESH entry/exit address, neighboring AP on the node 3 for the data packet to be sent to node 5.
  • the source/destination address is encapsulated into a 2-MAC address that can be forwarded in the Ethernet format, including the device source/destination address, and directly forwarded using the device source/destination address.
  • the mesh connection cannot be established between the nodes 4, 5, 6, and 1, 2, and 3, that is, the node 4, 5, 6 is not integrated into the WiFi MESH network consisting of 1, 2, and 3.
  • the uplink is still single.
  • the smart home device 112 and the PC device 113 communicate, it needs to go through the node 5, and the node 5 becomes a bottleneck for data forwarding. In addition, node 5 will affect the system if a line fault occurs.
  • the following takes the path of the node 1 - node 3 - node 5 - node 6 in FIG. 2 as an example to describe the multi-path fusion mesh networking method provided by the embodiment of the present application.
  • the WiFi-based MESH network information is extended to multiple nodes through Ethernet.
  • multiple types of link devices are integrated into a mesh network, and the link management layer is implemented not only in the mesh network.
  • the fusion also realizes the fusion at the data forwarding level, so that the cross-morphological nodes learn through the routing path, thereby achieving network interworking.
  • FIG. 4 is a structural diagram of a node provided by an embodiment of the present application.
  • the interface VAP-A, the Ethernet LAN (Local Area Network (LAN) interface LAN-Eth, and the Ethernet WAN interface WAN-Eth are physical interfaces, where VAP-A is used for device access.
  • LAN Local Area Network
  • WAN-Eth Ethernet WAN interface
  • the access node AP can be used for the access node AP or the access terminal device;
  • the LAN-Eth is the Ethernet LAN port of the node,
  • the WAN-Eth is the Ethernet WAN port of the node;
  • the VAP-A' is the interface of the virtual MESH networking.
  • the MESH connection between the nodes 1 and 3 and between the nodes 5 and 6 is WiFi, and the connection shown by the dotted line in FIG. 4 mainly passes through the virtual interface VAP-A'.
  • Communication to achieve communication between nodes; Ethernet connection between nodes 3 and 5, virtual interface VAP-A' between nodes 3 and 5 through the physical Ethernet interface LAN-Eth and WAN-Eth connection Establish communication. From node 1-3 to node 3-5 is the conversion and fusion of WiFi MESH to Ethernet.
  • FIG. 5 is a layered architecture diagram of a node protocol according to an embodiment of the present application. As shown in FIG. 5, they are an internal protocol layered architecture of Node 1 - Node 3 - Node 5 - Node 6, respectively, where architecture 510 represents the protocol layering of Node 1, architecture 520 represents the protocol layering of Node 3, and architecture 530 Representing the protocol layering of node 5, architecture 540 represents the protocol layering of node 6.
  • the node 3 includes at least two different protocol stack architectures, such as the protocol stack architecture on the MESH network side shown in the architecture 521 and the protocol stack architecture on the Ethernet side shown in 522; similarly, the Ethernet is completed on the node 5
  • the node 5 also includes at least two different protocol stack architectures, such as the protocol stack architecture on the Ethernet side shown in architecture 531 and the protocol stack architecture on the MESH network side shown in 532.
  • the protocol architecture 510 of the node 1 includes at least: a network layer (for example, an IP layer in the figure), a data link layer (or a medium access control MAC layer), and a physical layer (PHY).
  • the network layer defines end-to-end packet transmission, which can identify the logical addresses of all nodes, and also defines how routes are implemented and how they are learned.
  • the task of the network layer is to select the appropriate routing node to ensure timely data transmission.
  • the network layer combines the frames provided by the data link layer into a data packet, and the packet encapsulates a network layer header, which contains logical address information - source address information and network address information of the destination address.
  • the network layer also defines a segmentation method for decomposing a packet into smaller packets.
  • the data link layer defines how packets are transmitted over a single link. These protocols are related to the various media used for transport, such as Asynchronous Transfer Mode (ATM), Fiber Distributed Data Interface (Fiber). Distributed Data Interface, FDDI), etc.
  • ATM Asynchronous Transfer Mode
  • Fiber Fiber Distributed Data Interface
  • FDDI Distributed Data Interface
  • This layer establishes a data link between adjacent nodes based on the bit stream service provided by the physical layer, provides data frame (Frame) transmission without error on the channel, and the data link layer can provide reliable on the physical medium. transmission.
  • the role of this layer includes: physical address addressing, data framing, flow control, data error detection, retransmission, and so on. At this level, the unit of data is called a frame.
  • Representatives of the data link layer protocol include: SDLC, HDLC, PPP, STP, Frame Relay, and the like.
  • the PHY layer is a specification for transmission media that typically transmits data on physical media in the form of binary data, often with reference to standards established by other organizations. Connections, frames, frame usage, current, coding, and optical modulation are all part of the various physical layer specifications.
  • the physical layer uses multiple specifications to define all the details, repeaters, hubs, and usually The twisted pairs all work on the physical layer.
  • Nodes 2, 4, and 6 are similar to the protocol stack architecture of node 1 described above, and the protocol stack architectures of node 3 and node 5 are different.
  • the protocol architecture 520 of the node 3 includes two different protocol stack architectures 521 and 522, wherein the architecture 521 is used for communication within the MESH mesh network composed of nodes 1, 2, and 3, and the data packet is at the node.
  • the MESH mesh network consisting of 1, 2, and 3 is internally forwarded, each node sends, relays, and receives data packets at the network layer mainly depending on the format of a Protocol Data Unit (PDU), of which the most important
  • NID Network Interface Device
  • TTL Time To Live
  • SRC Source Address
  • DST Destination Address
  • FIG. 6 is a flowchart of an example of packet processing provided by an embodiment of the present application.
  • the WiFi-based IEEE802.11s MESH protocol works in the MAC layer of WiFi.
  • a node in the MESH mesh network system receives a network data packet, it needs to process according to the protocol specification shown in Figure 6, specifically The steps are described in conjunction with the flowchart as follows:
  • the node If the node receives the data packet, it first determines whether the NID matches, and if it does not match, directly discards the data packet;
  • the packet is put into the cache, and it is judged whether it needs to be forwarded according to the node type, the TTL value, and the DST value. Only the node type, the TTL value, and the DST address are all three conditions. The data packet is fed back if it is satisfied, otherwise the data packet is discarded;
  • the Ethernet protocol stack architecture 522 is included inside the node 3. Because the protocol stack is different, the data packets are generated in a process such as being encapsulated, and the generated format is different, specifically, in the MESH.
  • the encapsulated packet address is based on a 6-MAC address (for example, including device source/destination address, MESH entry/exit address, source/destination address between adjacent APs), in Ethernet
  • the address in the network is a 2-MAC address (for example, including the device source address/destination address), so the networking information of the MESH mesh network is blocked by the Ethernet, that is, the wireless MESH protocol cannot be extended to 402 and 403 in FIG.
  • the wired connection between the nodes is not available. Therefore, the routing node behind the node 5 cannot obtain the mesh topology information composed of the nodes 1, 2, and 3, so that the interworking of the network signaling and the fusion of the paths cannot be implemented.
  • FIG. 7 is a schematic diagram of an example of a fusion networking method provided by an embodiment of the present application. The method is applied to a communication system comprising at least two networks, each network comprising at least two nodes, each node of the network communicating based on a first transmission protocol, and at least one node in the first network is capable of At least one node in the network communicates based on the second transmission protocol.
  • the communication system 200 shown in FIG. 2 is taken as an example for description.
  • the nodes 4, 5, and 6 form a first network
  • the nodes 1, 2, and 3 form a second network
  • the nodes of the first network are based on the first
  • the transport protocol communicates
  • the nodes of the second network also communicate based on the first transport protocol
  • one node 5 of the first network communicates with the node 3 of the second network based on the second transport protocol.
  • the networking method provided by the embodiment of the present application can be applied to the node 3.
  • the node 5 is referred to as the first node of the first network
  • the node 3 is referred to as the second node of the second network
  • the node 6 (or node 4) is referred to as the first network.
  • the third node, node 1 (or node 2) is referred to as the fourth node of the second network, and it should be understood that the application is not limited thereto.
  • the method 700 includes the following.
  • the first node of the first network receives the first data packet from the second node in the second network, where the first data packet is the second node of the second network from the second network After the second data packet received by the fourth node, the data packet generated after the second transmission protocol is encapsulated, wherein the second data packet carries the identification information of the fourth node in the second network.
  • node 5 receives a first data packet from node 3, which is a data packet transmitted over a wired network between node 3 and node 5.
  • the second data packet is processed according to the first transmission protocol in the second network formed by the nodes 1, 2, and 3, and the second data packet carries the identification information of the node 1 or the node 2 of the second network.
  • the second data packet is encapsulated into a first data packet at node 3 based on a second transmission protocol.
  • the first node of the first network extends the network layer, the first node receives the first data packet from the second node of the second network, decapsulates the first data packet to obtain the second data packet, and then decapsulates The second data packet obtains identification information of node 1 or node 2 in the second network. Encapsulating the identification information of the second network node 1 or the node 2 in the extended IP layer, and when the data packet is forwarded from the Ethernet network to the first network, the identifier carried in the data packet encapsulated in the extended network layer The information is used as a payload portion of the packet when the packet is encapsulated, and is forwarded to the first network based on the second transmission protocol.
  • the node 3 first receiving the data packet of the node 1 or the node 2, the data packet carries the information of the node 1, 2, 3, and after receiving the data packet, the node 3 encapsulates the data packet in the internally extended network layer, which can be understood as The IP layer, and in the subsequent data packet transmission process, the information of the IP layer acts as a payload part of the data packet encapsulation process, and the node 3 encapsulates the data packet based on the second transmission protocol, thereby carrying the identification information of the second network.
  • the node 4 and the node 6 can obtain the information of the nodes 1, 2, and 3 through communication with the node 5, Thereby establishing a mesh network in which each node communicates.
  • the identifier information of the second network may include information such as networking information, link information, or network IP address of the second network, and the node 3 may encapsulate the identifier information of the second network in an extended network layer.
  • the identification information of the second network encapsulated in the extended network layer is encapsulated as a payload part in the data packet.
  • the networking information of the second network is encapsulated in the data packet and transmitted to the node 5 of the first network, so that the network topology information of the second network is transmitted to the node 5 and other routing nodes after the node 5.
  • the first node of the first network decapsulates the first data packet according to the second transmission protocol to obtain a second data packet.
  • first network and the second network are wireless MESH mesh networks
  • first network and the second network are connected by using an Ethernet network, that is, the first network and nodes formed by the nodes 4, 5, and 6.
  • the second network consisting of 1, 2, and 3 is a wireless MESH mesh network, and the two networks (ie, node 3 and node 5) are connected through an Ethernet.
  • the node 3 receives the data packet from the node 1 or the node 2, and the data packet is encapsulated in the layer 3 of the protocol stack at the node 3, and the identifier of the wireless mesh network is the MESH ID, for example, the wireless mesh network of the node 1 or the node 2
  • the information such as the identifier MESH ID is encapsulated in the data packet and transmitted to the node 5 through the Ethernet, thereby transmitting information such as the identifier MESH ID of the wireless mesh network of the node 1 or the node 2 to the node 5 and other routing nodes after the node 5,
  • the routing node after the node 5 can obtain the identifier MESH ID of the wireless mesh network of the nodes 1, 2, and 3, and implement the wireless MESH mesh network protocol to be extended to the wired network, so that each node of the node 1 - node 6 All can form a mesh network to achieve network interworking.
  • the first node sends the second data packet to a third node of the second network.
  • the first network and the second network are wireless MESH mesh networks
  • the first network and the second network are connected by an Ethernet network
  • the node 5 decapsulates the data by decapsulating the data.
  • the packet acquires second wireless MESH mesh network identification information composed of nodes 1, 2, and 3.
  • the second wireless MESH mesh network identification information carried by the data packet needs to be completed and transmitted to the node 5 through the Ethernet. That is, the internals of the node 3 need to complete the conversion and fusion of the WiFi-based wireless MESH mesh network to the Ethernet. Therefore, the node 3 also includes at least two different protocol stack architectures, which are specifically implemented in the embodiment of the present application as shown in FIG. Another example of a fusion networking method.
  • the networking method 800 of FIG. 8 is applied to a communication system including at least two networks, each network including at least two nodes, and nodes in each network communicate based on a first transmission protocol, at least in the first network A node is capable of communicating with at least one of the nodes in the second network based on the second transmission protocol.
  • the method 800 includes the following.
  • the second node of the second network receives the second data packet from the fourth node of the second network, the second data packet is a data packet generated based on the first transmission protocol, and the The second data packet carries the identification information of the fourth node in the second network.
  • the node 3 receives the data packet from the node 1 or the node 2, and the data packet is encapsulated in the layer 3 of the protocol stack at the node 3, and the MESH ID information, such as the identifier of the wireless mesh network of the node 1 or the node 2, MESH
  • the ID information is encapsulated in a data packet and transmitted to the node 5 through the Ethernet, thereby transmitting the identifier MESH ID information of the wireless mesh network of the node 1 or the node 2 to the node 5 and other routing nodes after the node 5, so that the node 5 is followed by
  • the routing node can obtain the MESH ID information of the nodes 1, 2, and 3, and implement the wireless MESH mesh network protocol to be extended to the wired network.
  • the second node of the second network encapsulates the second data packet according to the second transmission protocol to generate a first data packet, where the identifier information of the fourth node in the second network is Being used as the load of the first data packet.
  • the node 3 receives the data packet from the node 1 or the node 2, and the data packet is encapsulated in the layer 3 of the protocol stack at the node 3, and the identification information of the MESH network, for example, the wireless mesh network of the node 1 or the node 2
  • the identifier MESH ID information is encapsulated in a data packet, and the data packet is encapsulated into a data packet format that can be transmitted by Ethernet, and transmitted to the node 5 through the Ethernet, thereby transmitting the identifier MESH ID information of the wireless mesh network of the node 1 or the node 2
  • the routing node after the node 5 can obtain the network information of the nodes 1, 2, and 3, and realize the extension of the wireless MESH mesh network protocol to the wired network.
  • the second node of the second network sends the second data packet to the first node of the first network.
  • the wireless network information of the first network can be wired and transmitted to other routing nodes, thereby implementing interworking of the network nodes.
  • the convergence of the wireless MESH mesh network and the Ethernet network is taken as an example, and the network convergence shown in FIG. 9 is implemented in the communication system shown in FIG. 2, and FIG. 9 is an example network provided by the embodiment of the present application. Schematic diagram of the network.
  • the interworking of each node in the network can be realized in a hybrid network of a wireless connection and a wired connection, and the wireless MESH protocol can be extended to the wired and discovered through the fused neighbors.
  • the network topology enables the wired interface to merge into the mesh network with virtual mesh nodes.
  • data forwarding can be performed between the 6-MAC data packet of the wireless MESH interface and the Ethernet wired 2-MAC data packet interface. For the mutual access between the terminal devices connected to each node, each node can find the best path for communication.
  • network interworking can be completed between the nodes, and communication can be performed between every two nodes.
  • the routing node 6 can forward the data packet only through the intermediate node 5 connected to the routing node 6 before the network interworking, and the networking technology provided by the embodiment of the present application can be To achieve interworking between each node, a method 1000 as shown in FIG. 10 can be performed.
  • FIG. 10 is a schematic diagram of another example of a convergence networking method provided by an embodiment of the present application.
  • the networking method 1000 of FIG. 10 is applied to a communication system including at least two networks, each network including at least two nodes, and nodes in each network communicate based on a first transmission protocol, at least in the first network A node can communicate with at least one node in the second network based on a second transmission protocol, as shown in FIG. 10, the method 1000 including the following.
  • the third node of the first network receives a second data packet from a first node in the first network, where the second data packet is a first node pair in the first network a data packet obtained after the first data packet is decapsulated, the first data packet being a second data packet received by the second node of the second network from the fourth node of the second network, according to the The data packet generated after the second transmission protocol is encapsulated, wherein the second data packet carries the identification information of the fourth node in the second network.
  • the identifier information of the second network may include any node node 1, node 2 of the second network, or an identifier MESH ID of the wireless mesh network of the node 3.
  • the identifier MESH ID information of the wireless mesh network of any node node 1, node 2 or node 3 of the second network is encapsulated in a data packet, and transmitted to the node 5 through the second network, and the group of the second network is The network information is encapsulated in the data packet to the node 5 of the second network, thereby transmitting the network topology information of the first network to the node 5 and other routing nodes after the node 5.
  • first network and the second network are wireless MESH mesh networks
  • first network and the second network are connected by an Ethernet network
  • the second network composed of 2, 3 is a wireless MESH mesh network
  • the two networks ie, node 3 and node 5 are connected through an Ethernet.
  • the wireless MESH mesh network information is transmitted to the nodes 4, 5, 6 so that the nodes 4, 5, 6 and the nodes 1, 2, 3 merge into one mesh network.
  • communication can be implemented between any two nodes in the network, that is, the direct forwarding of the data packet is completed.
  • the third node of the first network acquires the identifier information of the fourth node in the second network from the second data packet, and determines according to the identifier information of the fourth node in the second network.
  • the ID of the fourth node communicates with the fourth node of the second network based on the first transmission protocol.
  • the node 6 can communicate with any routing node in the mesh network. Specifically, the processing flow inside the node of the mesh network will be described in detail from the aspects of link management and data forwarding.
  • the signaling message of the MESH 802.11s link management and data forwarding on the WiFi-based MESH network side is encapsulated in the extended IP layer when the IP node is transferred to the IP layer.
  • the MESH network information is processed by Ethernet and then forwarded through the MAC layer of WiFi. Referring to FIG. 11 and FIG. 12, the details are as follows:
  • neighbor nodes collect and discover neighbors by performing an MESH Probe Request, a MESH Probe Response, and a MESH Beacon. Information, thereby refreshing the neighbor entries.
  • the routing node 1 initiates an active scanning request to the neighboring node, and the routing node 3, which is the neighboring node, receives the request of the node 1, and notifies the node 1 of the routing information, and the node 1 updates the stored information after receiving the routing information of the node 3. Neighbor entry.
  • the basic information interaction between the source node and the destination node is necessary. Simply put, how is the source node? Tell the destination node: I need your MAC address; and how the destination node responds: this is my MAC address.
  • the primary route sends information, it will broadcast the Address Resolution Protocol (ARP) request containing the destination IP address to all routing nodes on the Ethernet system, and receive the return message to determine the physical address of the target; receive the return message.
  • ARP Address Resolution Protocol
  • the IP address and the physical address are stored in the local ARP cache and reserved for a certain period of time. The ARP cache is directly queried to save resources on the next request.
  • ARP Address Resolution Protocol
  • the ARP command can be used to query the mapping between the IP address and the MAC address in the local ARP cache, and add or delete static correspondences. It should be understood that both the ARP request and the ARP reply are assembled and sent in an ARP packet.
  • the composition of the structure is shown in Table 2 below. It should be noted that the ARP packet is encapsulated in the Ethernet frame, so the Ethernet frame header is also listed in the table.
  • the first two fields in the Ethernet frame header are the Ethernet MAC address and the source MAC address, and the special address whose destination address is all ones is the Ethernet broadcast address.
  • the source node Before the ARP entry is established, the source node only knows the IP address of the destination node and does not know its MAC address. Therefore, on the data link, the source node sends the ARP request packet only through the broadcast, on the same network segment. All Ethernet interfaces receive broadcast packets.
  • the next two single-byte length fields, called hardware address length and protocol address length indicate the length of the hardware address and protocol address, respectively, in length.
  • the next four fields are the Ethernet MAC address of the sender, the IP address of the sender, the Ethernet MAC address of the destination, and the IP address of the destination.
  • the Ethernet node includes the node 3 and the node 5, and the node 3 initiates an ARP request to the node 5.
  • the data packet passes through the processing of the node 3,
  • the ARP request carrying the MESH network information is broadcast to the node 5, and the node 5 informs the node 3 of the IP address and the physical address by returning the message, and the node 3 stores the IP address and the physical address in the local ARP cache and retains it.
  • the node 5 decapsulates the data packet from the node 3, obtains the MESH network information, and similar to the node 1, will continue to initiate an active scanning request to the neighboring node 6, and transmit the networking information of the node 1 to the node 6
  • the neighbor node 6 as the node 5 receives the request of the node 5, and notifies the node 5 of the routing information, and the node 5 updates the stored neighbor entry after receiving the routing information of the node 6.
  • the neighboring entry is discovered by the extended neighbors.
  • each node has the function of active reporting. That is, when the entry changes, the upper node and the primary node are advertised.
  • the master node forms the topology of the network node, and the upper node forms the topology of the surrounding nodes, repeats the above series of operations, and realizes information notification of all nodes of the entire network.
  • the ARP of the broadcast learning device is extended to carry the MESH ID information.
  • the interworking of the virtual interface on the physical interface of the Ethernet that is, the interworking between the virtual interface VAP-A' of the node 3 402 and the virtual interface VAP-A' of the node 5 403 in FIG.
  • the master node periodically broadcasts the gateway advertisement frame RANN.
  • the RANN includes information such as the MAC address of the master node.
  • the node receives the route request frame PREQ, it saves the routing information and replies to the route request acknowledgement frame PREP. If the PREP is not received within a certain period of time, the route is re-transmitted to obtain the frame PREQ.
  • the message body of the RANN is carried on the IP layer in the Ethernet;
  • the virtual interface VAP is implemented between different media.
  • -A' forwards the message.
  • the structure of the routing table includes the destination address, the next hop address, and the hop count.
  • the path length between nodes 1 and 3 is A, and between nodes 3 and 5.
  • the path is defined as 0 for the Ethernet length, and the path length between the nodes 5 and 6 is B.
  • the path learning process between the nodes will be described in detail below with reference to FIG.
  • FIG. 12 is a schematic diagram of an example of path learning provided by an embodiment of the present application.
  • the master node 1 periodically broadcasts the gateway advertisement frame RANN, and after receiving the RANN, the node 3 performs S1202 forwarding to the node 5, and the path distance (metric) is A, and the node 3 further performs S1203 back.
  • the message body of the RANN of the node 3 is carried on the IP layer, that is, the network information ID carrying the node 1.
  • the node 5 After receiving the RANN, the node 5 forwards to the node 6 through S1204, and the path metric is A+0, and the node 5 also performs S1205 back to the node 3, that is, the path distance is A+0, and the path is learned through such path.
  • the network information carrying the node 1 is transmitted to the node 5 and other nodes thereafter.
  • the node 6 After receiving the RANN message of the node 5, the node 6 returns S156 to the node 5, that is, the path distance is A+0+B.
  • routing table 3 shown in Table 3
  • routing table 4 shown in Table 4.
  • the node 3 When the node 3 is a node of the MESH network, that is, the left part of the node 3 in FIG. 12 performs data forwarding according to the routing table 3 of the above table 3.
  • the node 3 is fed back to the node 1, and the next hop is the node 1, and the distance is A, when the transition from the MESH node to the Ethernet node, the elapsed distance is zero.
  • the data is forwarded according to the routing table 3' of the above table 4.
  • the node 3 forwards the data of the node 1 to the node 5, and the distance passed is the previous hop distance, which is also A.
  • the distance between the internal nodes of the Ethernet node is 0, and the internal WIFI MESH interfaces of the AP are also in the manner that the distance metric is 0.
  • the metric value is measured and 2.4G. same.
  • the generation of the multipath forwarding table of each node is completed by the transfer of values between the message bodies learned by the path. There are both the main route and the other node, thus completing the interworking between the nodes.
  • FIG. 13 is a schematic block diagram of an example node device provided by an embodiment of the present application.
  • the node device 1300 can be configured to correspond to the first node device described in the foregoing converged networking method 700, and each module and unit in the node device 1300 is used to perform each action and processing performed by the first node device in the foregoing method 700. process.
  • the first node device 1300 includes a receiving unit 1310, a processing unit 1320, and a transmitting unit 1330.
  • the first node device is applied to a communication system including at least two networks, each network includes at least two node devices, and node devices of each network communicate according to a first transmission protocol, at least one of the first networks
  • the node device is capable of communicating with at least one node device in the second network based on the second transmission protocol.
  • the receiving unit 1310 is configured to receive a second data packet from a fourth node of the second network, where the second data packet is a data packet generated based on the first transmission protocol, and the second data packet Carrying identification information of the second network.
  • the processing unit 1320 is configured to decapsulate the first data packet according to the first transmission protocol to obtain a second data packet, where the second data packet carries identifier information of the second network.
  • the sending unit 1330 is configured to send the second data packet to a third node of the second network.
  • the processing unit is further configured to extend the network layer, and encapsulate the first data packet received by the receiving unit in an extended network layer.
  • the identifier information of the second network may include information such as networking information, link information, or network IP address of the second network.
  • first network and the second network are wireless MESH mesh networks
  • first network and the second network are connected by an Ethernet network, that is, the first network and nodes 1, 2 composed of nodes 4, 5, and 6.
  • the second network composed of 3 is a wireless MESH mesh network, and the two networks (ie, node 3 and node 5) are connected through an Ethernet.
  • the node 3 receives the data packet from the node 1 or the node 2, and the data packet is encapsulated in the layer 3 of the protocol stack at the node 3, and encapsulates the information of the MESH network information, such as networking information, link information or network IP address, in the data.
  • the packet In the packet, it is transmitted to the node 5 through the Ethernet, so that information such as networking information, link information or network IP address is transmitted to the node 5 and other routing nodes after the node 5, so that the routing node after the node 5 can obtain the node.
  • the network information of 1, 2, and 3 realizes the extension of the wireless MESH mesh network protocol to the wired network, so that each node of the node 1 - node 6 can form a mesh network to realize network interworking.
  • FIG. 14 is a schematic block diagram of another example node device provided by an embodiment of the present application.
  • the node device 1400 can be configured to correspond to the second node device described in the foregoing fusion networking method 800, and each module and unit in the node device 1400 is used to perform each action and processing performed by the second node device in the foregoing method 800. process.
  • the second node device 1400 includes a receiving unit 1410, a processing unit 1420, and a transmitting unit 1430.
  • the second node device is applied to a communication system including at least two networks, each network including at least two node devices, and node devices of each network communicate according to a first transmission protocol, at least one of the first networks
  • the node device is capable of communicating with at least one node device in the second network based on the second transmission protocol.
  • the receiving unit 1410 is configured to receive a second data packet from a fourth node of the second network, where the second data packet is a data packet generated based on the first transmission protocol, and the second data packet Carrying identification information of the second network.
  • the processing unit 1420 is configured to encapsulate the second data packet according to the second transmission protocol to generate a first data packet, where the second data packet is used as a load of the first data packet.
  • the sending unit 1430 is configured to send the second data packet to the first node of the first network.
  • the identifier information of the second network may include information such as networking information, link information, or network IP address of the second network.
  • first network and the second network are wireless MESH mesh networks
  • first network and the second network are connected by an Ethernet network, that is, the first network and the node 1 composed of nodes 4, 5, and 6
  • the second network composed of 2, 3 is a wireless MESH mesh network, and the two networks (ie, node 3 and node 5) are connected through an Ethernet.
  • the node 3 receives the data packet from the node 1 or the node 2, and the data packet is encapsulated in the layer 3 of the protocol stack at the node 3, and encapsulates the information of the MESH network information, such as networking information, link information or network IP address, in the data.
  • the packet In the packet, it is transmitted to the node 5 through the Ethernet, so that information such as networking information, link information or network IP address is transmitted to the node 5 and other routing nodes after the node 5, so that the routing node after the node 5 can obtain the node.
  • the network information of 1, 2, and 3 realizes the extension of the wireless MESH mesh network protocol to the wired network, so that each node of the node 1 - node 6 can form a mesh network to realize network interworking. .
  • FIG. 15 is a schematic block diagram of another example node device provided by an embodiment of the present application.
  • the node device 1500 can be configured to correspond to the third node device described in the foregoing fusion networking method 1000, and each module and unit in the node device 1500 is used to perform each action and processing performed by the third node device in the foregoing method 1000. process.
  • the third node device 1500 includes a receiving unit 1510, a processing unit 1520, and a transmitting unit 1530.
  • the third node device is applied to a communication system including at least two networks, each network including at least two node devices, and node devices in each network communicate based on a first transmission protocol, at least in the first network
  • a node device is capable of communicating with at least one node device in the second network based on a second transmission protocol.
  • the receiving unit 1510 is configured to receive a second data packet from a first node device in the first network, where the second data packet is a first node in the first network to a first data packet. Decapsulating the obtained data packet, the first data packet is a data packet generated by the second node device of the second network according to the second transmission protocol, and the first data packet carries the second data packet Identification information of the network.
  • the processing unit 1520 is configured to obtain the identifier information of the second network from the second data packet, and based on the identifier information of the second network, based on the first transport protocol and the second network
  • the two-node device communicates.
  • the identifier information of the second network may include information such as networking information, link information, or network IP address of the second network.
  • first network and the second network are wireless MESH mesh networks
  • first network and the second network are connected by an Ethernet network, that is, the first network and the node 1 composed of nodes 4, 5, and 6
  • the second network composed of 2, 3 is a wireless MESH mesh network, and the two networks (ie, node 3 and node 5) are connected through an Ethernet.
  • the data packet received by the third node device reads the identification information of the network, thereby obtaining the MESH network information, and can obtain information of each node device in the wireless MESH mesh network and the Ethernet network, so that each node device can form a mesh Network, to achieve network interoperability.
  • FIG. 16 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • the communication device 1600 includes a processor 1610, a transceiver 1620, and a memory 1630, wherein the processor 1610, the transceiver 1620, and the memory 1630 communicate with each other through an internal connection path.
  • the memory 1630 is configured to store instructions for executing the instructions stored by the memory 1630 to control the transceiver 1620 to receive signals or transmit signals.
  • the processor 1610 may invoke the program code stored in the memory 1630 to perform the corresponding operations of the method 700 performed by the first node device in the method embodiment.
  • the processor 1610 may invoke the program code stored in the memory 1630 to perform the corresponding operations of the method 700 performed by the first node device in the method embodiment.
  • the processor 1610 can invoke the program code stored in the memory 1630 to perform the corresponding operations of the method 800 performed by the second node device in the method embodiment.
  • the processor 1610 can invoke the program code stored in the memory 1630 to perform the corresponding operations of the method 800 performed by the second node device in the method embodiment.
  • the processor 1610 may invoke the program code stored in the memory 1630 to perform the corresponding operations of the method 1000 performed by the third node device in the method embodiment.
  • the processor 1610 may invoke the program code stored in the memory 1630 to perform the corresponding operations of the method 1000 performed by the third node device in the method embodiment.
  • the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • each step of the foregoing method embodiment may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software.
  • the processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA), or the like. Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method.
  • the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (Erasable PROM, EPROM), or an electric Erase programmable read only memory (EEPROM) or flash memory.
  • the volatile memory can be a Random Access Memory (RAM) that acts as an external cache.
  • RAM Random Access Memory
  • many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM).
  • SDRAM Double Data Rate SDRAM
  • DDR SDRAM Double Data Rate SDRAM
  • ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • SLDRAM Synchronous Connection Dynamic Random Access Memory
  • DR RAM direct memory bus random access memory
  • FIG. 17 is a schematic block diagram of a system chip provided by an embodiment of the present application.
  • the system chip 1700 of FIG. 17 includes an input interface 1701, an output interface 1702, at least one processor 1703, and a memory 1704.
  • the input interface 1701, the output interface 1702, the processor 1703, and the memory 1704 are interconnected by an internal connection path.
  • the processor 1703 is configured to execute code in the memory 1704.
  • the processor 1703 can implement the method 700 performed by the first node in the method embodiment. For the sake of brevity, it will not be repeated here.
  • the processor 1703 can implement the method 800 performed by the second node in the method embodiment. For the sake of brevity, it will not be repeated here.
  • the processor 1703 can implement the method 1000 performed by the third node in the method embodiment. For the sake of brevity, it will not be repeated here.
  • B corresponding to A means that B is associated with A, and B can be determined according to A.
  • determining B from A does not mean that B is only determined based on A, and that B can also be determined based on A and/or other information.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present application which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé et un appareil pour une mise en réseau convergée, appliqués à un système de communication comprenant au moins deux réseaux, chaque réseau comprenant au moins deux nœuds, des nœuds dans chaque réseau communiquant les uns avec les autres sur la base d'un premier protocole de transmission, et au moins un nœud dans un premier réseau étant capable de communiquer avec au moins un nœud dans un second réseau sur la base d'un second protocole de transmission. Le procédé comprend : la réception, par un premier nœud d'un premier réseau, d'un premier paquet de données depuis un deuxième nœud dans un second réseau, le premier paquet de données étant un second paquet de données reçu par le deuxième nœud du second réseau depuis un quatrième nœud du second réseau, et le second paquet de données transportant des informations d'identification du quatrième nœud dans le second réseau ; la désencapsulation, par le premier nœud du premier réseau, du premier paquet de données pour acquérir le second paquet de données ; et l'envoi, par le premier nœud du premier réseau, du second paquet de données à un troisième nœud du premier réseau. Le procédé de mise en réseau peut accomplir des communications entre des réseaux ayant des supports différents.
PCT/CN2018/081318 2018-03-30 2018-03-30 Procédé et appareil pour mise en réseau convergée WO2019183919A1 (fr)

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