WO2019128384A1 - Procédé et dispositif de de sélection d'un trajet d'envoi de données, support d'informations et serveur - Google Patents

Procédé et dispositif de de sélection d'un trajet d'envoi de données, support d'informations et serveur Download PDF

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Publication number
WO2019128384A1
WO2019128384A1 PCT/CN2018/110007 CN2018110007W WO2019128384A1 WO 2019128384 A1 WO2019128384 A1 WO 2019128384A1 CN 2018110007 W CN2018110007 W CN 2018110007W WO 2019128384 A1 WO2019128384 A1 WO 2019128384A1
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WO
WIPO (PCT)
Prior art keywords
node
routing
address
preset
packet
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PCT/CN2018/110007
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English (en)
Chinese (zh)
Inventor
李晓辉
胡胜发
Original Assignee
安凯(广州)微电子技术有限公司
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Publication of WO2019128384A1 publication Critical patent/WO2019128384A1/fr

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Classifications

    • 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
    • H04L45/32—Flooding
    • 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
    • H04L45/12—Shortest path evaluation
    • H04L45/124—Shortest path evaluation using a combination of metrics
    • 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
    • H04L45/20—Hop count for routing purposes, e.g. TTL
    • 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
    • H04L45/70—Routing based on monitoring results
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/12—Communication route or path selection, e.g. power-based or shortest path routing based on transmission quality or channel quality

Definitions

  • the present invention relates to the field of Bluetooth data transmission technologies, and in particular, to a data forwarding path selection method and apparatus, a storage medium, and a server.
  • Bluetooth technology has a history of nearly 20 years, with green energy saving and low cost as the design concept, and is widely used in mobile phones, wireless earphones and other related technologies.
  • Bluetooth protocol 4.x-5.0 which has a low power specification (BLE, Bluetooth Low Energy) attempts to extend Bluetooth to a wider range of low-cost applications such as instrument monitoring.
  • Mesh Bluetooth Grid Protocol
  • Mesh is mainly for building automation (such as lighting access control, etc.), with adaptive features.
  • Mesh's advertising bearer layer air package forwards data in a "controllable flooding broadcast” mode, which uses TTL (Time) To Live) and cache checking as a "controllable algorithm” to control the forwarding process of data in the network.
  • the result of this method is that for any data packet sent from one node to another, the entire data transmission network Almost all nodes will need to forward the packet once, which increases the overall power consumption of the network, and the node needs to add a random delay each time it forwards the packet.
  • the use of the existing method for network data transmission wastes common bandwidth, greatly reduces the transmission rate, and reduces the real-time performance of data transmission.
  • the object of the embodiments of the present invention is to provide a data forwarding path selection method and device, a storage medium, and a server, which can effectively solve the problem that the network data transmission in the prior art wastes the common bandwidth, greatly reduces the transmission rate, and improves the data transmission. Real time.
  • an embodiment of the present invention provides a data forwarding path selection method, including the following steps:
  • the preset node broadcasts a routing request packet to multiple nodes that have direct communication with the preset node.
  • the current node is not a preset termination node, modify the source address in the routing request packet to the address of the current node, and continue to broadcast a routing request packet to a node that has direct communication with the current node. ;
  • the termination node sends a routing response packet to the response target; wherein the response target is a node that sends the routing request packet to the termination node;
  • the preset node When the preset node receives the plurality of routing response packets, the preset node performs routing negotiation according to the multiple routing response packets, where the routing negotiation includes calculating a TTL of the node and Signal to noise ratio of the communication channel;
  • the preset node If the preset node successfully negotiates with the selected node, the preset node sends a routing data packet to the selected node, where the selected node is a preset node. There are nodes that communicate directly.
  • the data forwarding path selection method disclosed in the present invention broadcasts a routing request packet to a node that directly communicates with itself through a preset node, and if the current node is not a preset termination node, the routing is selected. After the content of the request packet is copied and the address is modified, the next-level node broadcast routing request packet that continues to communicate directly with itself exists; if the current node is a preset termination node, the terminating node forwards the selection to the node that directly communicates with itself. Road response package.
  • the preset node After the preset node receives the plurality of routing response packets, performing routing negotiation according to the routing response packet, when the preset node negotiates successfully with a next-level node that directly communicates with itself And the next level node is the selected node, and the preset node sends the routing data packet to the selected node.
  • the method that the selected node is successfully negotiated with the selected node indicates that the selected node is the next optimal node in the path of the preset node to the terminating node, and the current
  • the node only interacts with the nodes at the next level, which reduces unnecessary forwarding of data, increases the transmission rate, and improves the real-time performance of data transmission.
  • the routing request packet includes a source address, a destination address, and an initiating node address, where the source address of the routing request packet is a node address that sends the routing request packet, and the routing is performed.
  • the destination address of the request packet is the address of the terminating node, and the originating node address of the routing request packet is the address of the starting node.
  • the step S2 specifically includes:
  • the routing response packet includes a source address, a destination address, and a resolution address.
  • the source address of the routing response packet is a node address that sends the routing response packet
  • the routing response is
  • the destination address of the packet is an address of the response destination
  • the resolution address is an address of the preset termination node.
  • the preset node performs routing negotiation according to the multiple routing response packets, and specifically includes:
  • the preset node calculates a TTL of the routing response packet and a signal to noise ratio of the communication channel between the node and the preset node according to the plurality of routing response packets, and select one of the nodes according to the calculation result.
  • the selected node
  • the preset node sends the routing data packet to the selected node according to information in the routing table.
  • the routing table includes a plurality of data items; wherein any of the data items includes an address of a preset termination node in the data forwarding path and an address of a next node of the current node data transmission.
  • the routing data packet includes a source address, a destination address, and a lower station address; wherein, a source address of the routing packet is an address of the starting node, and the routing packet is The destination address is the address of the terminating node, and the lower station address is the address of the selected node.
  • the embodiment of the invention further provides a data forwarding path selecting device, including:
  • a routing request module configured to: the preset node broadcasts a routing request packet to a plurality of nodes that directly communicate with the preset node;
  • a routing forwarding module configured to modify a source address in the routing request packet to an address of the current node, and continue to directly communicate with the current node if the current node is not a preset termination node Broadcast routing request packet;
  • a routing response module configured to: if the current node is a preset termination node, send the routing response packet to the response target; wherein the response target is to send the routing request packet to the termination node Node
  • a routing negotiation module configured to: when the preset node receives the plurality of routing response packets, the preset node performs routing negotiation according to the plurality of routing response packets; wherein the routing negotiation includes Calculating the TTL of the node and the signal to noise ratio of the communication channel;
  • a data sending module configured to send a routing data packet to the selected node if the preset node successfully negotiates with the selected node routing; wherein the selected node is a The node where the preset node has direct communication exists.
  • the embodiment of the present invention further provides a storage medium, where the storage medium includes a stored program, wherein the device in which the storage medium is located controls the data forwarding path selection method according to any one of the above items when the program is running.
  • An embodiment of the present invention further provides a server, including one or more processors; a memory;
  • One or more programs wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the program comprising for performing any of the above Data forwarding path selection method.
  • FIG. 1 is a schematic flowchart of a data forwarding path selection method according to Embodiment 1 of the present invention.
  • FIG. 2 is a schematic flowchart of a data forwarding path selection method according to Embodiment 2 of the present invention.
  • FIG. 3 is a schematic structural diagram of a BLE advertisement package in a data forwarding path selection method according to Embodiment 2 of the present invention.
  • FIG. 4 is a schematic structural diagram of a data forwarding path selecting apparatus according to Embodiment 3 of the present invention.
  • FIG. 1 is a schematic flowchart of a method for selecting a data forwarding path according to Embodiment 1 of the present invention, including steps S1 to S5:
  • the preset node broadcasts a routing request packet to multiple nodes that have direct communication with the preset node.
  • the current node is not a preset termination node, modify the source address in the routing request packet to the address of the current node, and continue to broadcast a routing request packet to a node that has direct communication with the current node. ;
  • the termination node sends a routing response packet to the response target; wherein the response target is a node that sends the routing request packet to the termination node;
  • the preset node When the preset node receives the plurality of routing response packets, the preset node performs routing negotiation according to the multiple routing response packets, where the routing negotiation includes calculating a TTL of the node and Signal to noise ratio of the communication channel;
  • the preset node If the preset node successfully negotiates with the selected node, the preset node sends a routing data packet to the selected node, where the selected node is a preset node. There are nodes that communicate directly.
  • FIG. 2 is a second embodiment of the present invention.
  • Embodiment 2 On the basis of Embodiment 1, the method includes steps S21 to S28:
  • the preset node broadcasts a routing request packet to a plurality of nodes that directly communicate with the preset node.
  • the routing request packet includes a source address, a destination address, and an originating node address, where the source address of the routing request packet is a node address that sends the routing request packet, and the routing request packet is The destination address is an address of the terminating node, and an originating node address of the routing request packet is an address of the starting node.
  • the termination node sends a routing response packet to the response target, where the response target is a node that sends the routing request packet.
  • the routing response packet includes a source address, a destination address, and a resolution address.
  • the source address of the routing response packet is a node address for sending the routing response packet
  • the destination of the routing response packet is The address is an address of the response destination
  • the resolution address is an address of the preset termination node.
  • the preset node calculates a TTL of the routing response packet and a signal to noise ratio of a communication channel between the node and the preset node according to the plurality of routing response packets, and select one according to the calculation result. a node as the selected node;
  • the selected node is used as the next node of the preset node data transmission, and saves the address of the selected node to a routing table of the preset node.
  • the preset node sends the routing data packet to the selected node according to information in the routing table.
  • the routing table includes a plurality of data items; wherein any of the data items includes an address of a preset termination node in the data forwarding path and an address of a next node of the current node data transmission.
  • the preset node If the preset node successfully negotiates with the selected node, the preset node sends a routing data packet to the selected node, where the selected node is a preset node. There are nodes that communicate directly.
  • the routing data packet includes a source address, a destination address, and a lower station address; wherein, a source address of the routing data packet is an address of the starting node, and a destination address of the routing data packet For the address of the terminating node, the lower station address is the address of the selected node.
  • the routing request packet is broadcasted to the node that directly communicates with the self-predetermined node, and if the current node is not the preset termination node, the content of the routing request packet is copied and the address is modified, and then continues to exist with itself.
  • the next-level node of the direct communication broadcasts; if the current node is a preset termination node, the termination node forwards the routing response packet to the node that directly communicates with itself.
  • the preset node After the preset node receives the plurality of routing response packets, performing routing negotiation according to the routing response packet, when the preset node negotiates successfully with a next-level node that directly communicates with itself And the next level node is the selected node, and the preset node sends the routing data packet to the selected node.
  • the method that the selected node is successfully negotiated with the selected node indicates that the selected node is the next optimal node in the path of the preset node to the terminating node, and the current
  • the node only interacts with the nodes at the next level, which reduces unnecessary forwarding of data, increases the transmission rate, and improves the real-time performance of data transmission.
  • the BLE advertisement package In the Bluetooth Mesh network data transmission, data is generally sent through the BLE advertisement package, and the BLE advertisement package is further divided into a Mesh package and a routing package.
  • the Mesh packet refers to the packet propagated by the standard Mesh protocol.
  • the routing packet refers to the packet used in the routing protocol. It can be divided into three types: routing request packet, routing response packet, and routing packet. Each type of packet contains three addresses.
  • the routing request packet includes a source address, a destination address, and an initiating node address.
  • the source address of the routing request packet is a node address for sending the routing request packet
  • the destination address of the routing request packet is The address of the terminating node
  • the originating node address of the routing request packet is the address of the starting node.
  • the routing response packet further includes a source address, a destination address, and a resolution address.
  • the source address of the routing response packet is a node address for sending the routing response packet
  • the destination address of the routing response packet is The address of the response target
  • the resolution address is an address of the preset termination node.
  • the routing data packet further includes a source address, a destination address, and a lower station address.
  • the source address of the routing data packet is an address of the starting node
  • the destination address of the routing data packet is The address of the terminating node is the address of the selected node.
  • the source address and the destination address of the routing data packet remain unchanged, and the lower station address of the routing data packet is continuously changed.
  • FIG. 3 is a schematic structural diagram of a BLE advertisement package in a data forwarding path selection method according to Embodiment 2 of the present invention. The following describes how the present invention distinguishes between a Mesh packet and a routing packet according to FIG. 3. If the AdType flag in the advertisement package is M, the advertisement packet is a Mesh packet, and the AdType flag is specifically an 8-bit byte value; When the AdType flag in the advertisement package is R, the advertisement package is a routing package.
  • the embodiment of the present invention only the node having the routing function can forward the routing packet, and the ordinary standard Mesh node cannot identify the routing packet, so the routing packet is automatically ignored.
  • the embodiment of the invention avoids unnecessary data forwarding by using the foregoing method, saves public bandwidth, and improves data forwarding efficiency.
  • the node adopts a broadcast mode for forwarding the data packet. It can be understood that the node sends a routing packet to all nodes that have direct communication with itself, but only the node with the routing function can Directly accept the routing package.
  • the routing packet is first converted into a standard Mesh packet, and then sent to the standard Mesh node; if the standard Mesh node is to have a routing function When the node sends data, the standard Mesh packet is first converted into a routing packet, and then sent to the node with the routing function.
  • the node having the routing function includes a routing table, and the routing table includes a plurality of data items; wherein any data item includes a destination node address of the data packet and an address of a next node of the node.
  • the forwarding may cause a failure, and the original transmitting node may re-initiate the routing request.
  • FIG. 4 is a schematic structural diagram of a data forwarding path selecting apparatus according to Embodiment 3 of the present invention, where the apparatus includes:
  • the routing request module 101 is configured to: the preset node broadcasts a routing request packet to a plurality of nodes that have direct communication with the preset node;
  • the routing forwarding module 102 is configured to: if the current node is not a preset termination node, modify the source address in the routing request packet to an address of the current node, and continue to directly communicate with the current node.
  • the node broadcasts a routing request packet;
  • the routing response module 103 is configured to: if the current node is a preset termination node, send the routing response packet to the response target, where the response target is to send the routing request to the termination node The node of the package;
  • the routing negotiation module 104 is configured to: when the preset node receives the plurality of routing response packets, the preset node performs routing negotiation according to the plurality of routing response packets; wherein the routing negotiation Including the TTL of the computing node and the signal to noise ratio of the communication channel;
  • the data sending module 105 is configured to: if the preset node successfully negotiates with the selected node, the preset node sends a routing data packet to the selected node; wherein the selected node is a
  • the preset node has a node that directly communicates.
  • the data forwarding path selecting apparatus broadcasts a routing request packet to a plurality of nodes that directly communicate with the preset node by using the routing request module 101, if the current node is not a preset termination.
  • the routing forwarding module 102 modifies the source address in the routing request packet to the address of the current node, and continues to broadcast a routing request packet to a node that has direct communication with the current node; if the current node is After the preset termination node, the routing response module 103 sends a routing response packet to the response target; when the preset node receives the plurality of routing response packets, the routing negotiation module 104 responds according to the plurality of routing responses.
  • the packet performs routing negotiation; if the preset node successfully negotiates with the selected node routing, the data sending module 105 sends a method for selecting a routing packet to the selected node, and the current node only passes the node with the next node. Interacting reduces the number of data forwarding, increases the transmission rate, and improves the real-time performance of data transmission.
  • the embodiment of the present invention further provides a storage medium, wherein the storage medium includes a stored program, where the device where the storage medium is located is controlled to execute the data described in any of the embodiments. Forward path selection method.
  • An embodiment of the present invention further provides a server, including one or more processors; a memory; and one or more programs, wherein the one or more programs are stored in the memory and configured to be configured by The one or more processors execute, the program comprising a data forwarding path selection method for performing any of the above embodiments.

Abstract

La présente invention concerne un procédé de sélection d'un trajet d'envoi de données, comprenant les étapes consistant : à diffuser, par un nœud prédéfini, un paquet de demande de sélection de trajet à une pluralité de nœuds qui sont en communication directe avec le nœud prédéfini ; si un nœud actuel n'est pas un nœud de terminaison prédéfini, à modifier une adresse source dans le paquet de demande de sélection de trajet et à continuer à diffuser le paquet de demande de sélection de trajet à des nœuds qui sont en communication directe avec le nœud actuel ; si le nœud actuel est un nœud de terminaison prédéfini, à envoyer, par le nœud de terminaison, un paquet de réponse de sélection de trajet à une cible de réponse ; lorsque le nœud prédéfini reçoit une pluralité de paquets de réponse de sélection de trajet, à effectuer, par le nœud prédéfini, une négociation de sélection de trajet en fonction de la pluralité de paquets de réponse de sélection de trajet ; si la négociation de sélection de trajet réussit, à envoyer, par le nœud prédéfini, le paquet de données de sélection de trajet à un nœud sélectionné. La présente invention concerne également un dispositif de sélection de trajet de transfert de données, un support d'informations et un serveur. Le procédé de sélection de trajet de transfert de données selon les modes de réalisation de la présente invention réduit le nombre d'occurrences d'envoi de données et améliore les performances en temps réel de la transmission de données au moyen du procédé selon lequel un nœud actuel interagit uniquement avec un nœud du niveau suivant.
PCT/CN2018/110007 2017-12-29 2018-10-12 Procédé et dispositif de de sélection d'un trajet d'envoi de données, support d'informations et serveur WO2019128384A1 (fr)

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CN201711486798.5 2017-12-29

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CN109597830B (zh) * 2018-11-22 2023-05-05 创新先进技术有限公司 一种数据流通方法、装置、设备及介质
CN109617808A (zh) * 2019-01-14 2019-04-12 安凯(广州)微电子技术有限公司 一种基于蓝牙Mesh的数据优化传输方法、系统及装置
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