WO2021160062A1 - 一种基于蓝牙网络的通信方法、及其节点和通信系统 - Google Patents

一种基于蓝牙网络的通信方法、及其节点和通信系统 Download PDF

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Publication number
WO2021160062A1
WO2021160062A1 PCT/CN2021/075747 CN2021075747W WO2021160062A1 WO 2021160062 A1 WO2021160062 A1 WO 2021160062A1 CN 2021075747 W CN2021075747 W CN 2021075747W WO 2021160062 A1 WO2021160062 A1 WO 2021160062A1
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node
relay
bluetooth
message
request
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PCT/CN2021/075747
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English (en)
French (fr)
Inventor
安勍
刘大鹏
于小博
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阿里巴巴集团控股有限公司
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Priority to US17/783,446 priority Critical patent/US20230179980A1/en
Priority to EP21752880.1A priority patent/EP4106365A4/en
Priority to JP2022536533A priority patent/JP2023512143A/ja
Publication of WO2021160062A1 publication Critical patent/WO2021160062A1/zh

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    • 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
    • H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
    • 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
    • H04W16/18—Network planning tools
    • H04W16/20—Network planning tools for indoor coverage or short range network deployment
    • 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
    • H04W16/24—Cell structures
    • H04W16/26—Cell enhancers or enhancement, e.g. for tunnels, building shadow
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
    • H04W40/246—Connectivity information discovery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
    • H04W40/248—Connectivity information update
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/16—Gateway arrangements

Definitions

  • the present invention relates to the field of information technology, in particular to a communication method based on a Bluetooth network, and a node and communication system thereof.
  • the Bluetooth Technology Alliance SIG released the Bluetooth Mesh protocol in 2017, which can realize a mesh network topology, support multi-hop connections, and expand the coverage of Bluetooth networks, which is especially suitable for smart homes and smart buildings. Communication scenarios for IoT devices.
  • the Bluetooth Mesh protocol is based on the communication mechanism of broadcast flooding. For each Bluetooth Mesh node, a Bluetooth Mesh message is sent out through a broadcast packet. After receiving the broadcast packet, all other nodes will forward it once until the destination address node receives it. To this Bluetooth Mesh message. This will cause some invalid and unnecessary broadcast packets to be sent in the Bluetooth Mesh network, which will affect the throughput of the Bluetooth Mesh network.
  • An object of the present invention is to provide a communication method based on a Bluetooth network, and a node and a communication system thereof, so as to solve the problem of excessively high throughput of the existing Bluetooth network.
  • a communication method based on a Bluetooth network for use in a Bluetooth end node, and the method includes:
  • the neighboring Bluetooth node does not have a relay node, broadcast and send a configuration relay request message to request the gateway node to select and configure the relay node from the neighboring Bluetooth nodes.
  • the communication method according to the first aspect of the present invention further includes:
  • the neighboring Bluetooth node If the relay notification message sent by the neighboring Bluetooth node is received, the neighboring Bluetooth node is recorded as a relay node.
  • the relay notification message is broadcasted.
  • a communication method based on a Bluetooth network for use in a Bluetooth gateway node, and the method includes:
  • the configuration request relay message includes: a propagation path sequentially set by an end node, an intermediate node, and a gateway node;
  • the preset selection condition includes:
  • the communication method according to the second aspect of the present invention further includes:
  • a child node list update message is sent to the original relay node.
  • a communication method based on a Bluetooth network for a Bluetooth relay node, and the method includes:
  • the address information of the local node is added only for the configuration relay message that has not been forwarded, and the configuration relay message that has not been forwarded is broadcasted.
  • the communication method according to the third aspect of the present invention further includes:
  • the relay function is turned on according to the request to turn on the relay; wherein the request to turn on the relay includes: address information of the end node;
  • the communication method according to the third aspect of the present invention further includes:
  • the changed end node is deleted from the local node list according to the child node list update message.
  • the communication method according to the third aspect of the present invention further includes:
  • the relay function is turned off, and a relay message requesting configuration is broadcast to neighboring Bluetooth nodes.
  • a Bluetooth end node including:
  • the communication module is configured to perform data communication through the relay node if there is a relay node in the adjacent Bluetooth node;
  • the broadcast module is configured to broadcast and send a configuration relay request message if the neighboring Bluetooth nodes do not have a relay node, so as to request the gateway node to select and configure the relay node from the neighboring Bluetooth nodes.
  • the Bluetooth end node according to the fourth aspect of the present invention further includes:
  • the relay node recording module is configured to record the adjacent Bluetooth node as a relay node if a relay notification message sent by a neighboring Bluetooth node is received.
  • the broadcasting module is further configured to: broadcast and send the relay notification message.
  • a Bluetooth gateway node including:
  • the first receiving module is configured to receive a configuration request relay message; wherein the configuration request relay message includes: a propagation path set in sequence by an end node, an intermediate node, and a gateway node;
  • a relay node configuration module configured to select a relay node from the intermediate nodes of the propagation path according to a preset selection condition
  • the relay node activation module is configured to send a relay activation request to the relay node; wherein the relay activation request includes: address information of the end node.
  • the preset selection condition includes:
  • the Bluetooth gateway node according to the fifth aspect of the present invention further includes:
  • the first update module is configured to send a child node list update message to the original relay node if it is found that the relay node of the end node has changed.
  • a Bluetooth relay node including:
  • the second receiving module is configured to receive a configuration request relay message
  • Relay function module for:
  • the address information of the local node is added only for the configuration relay message that has not been forwarded, and the configuration relay message that has not been forwarded is broadcasted.
  • the relay function module is further used for:
  • the relay function is turned on according to the request to turn on the relay; wherein the request to turn on the relay includes: address information of the end node;
  • the Bluetooth relay node according to the sixth aspect of the present invention further includes:
  • the second update module is configured to, if a child node list update message is received, delete the changed end node from the local node list according to the child node list update message.
  • the Bluetooth relay node according to the sixth aspect of the present invention further includes:
  • the reset module is used to turn off the relay function if the connection to the network fails, and broadcast and send a configuration relay message to neighboring Bluetooth nodes.
  • a Bluetooth communication network system including: the Bluetooth end node according to the fourth aspect of the present invention, the Bluetooth gateway node according to the fifth aspect of the present invention, and the Bluetooth terminal node according to the sixth aspect of the present invention Bluetooth relay node.
  • a storage device stores computer program instructions, and the computer program instructions are executed according to the method of the present invention.
  • a computing device including: a memory for storing computer program instructions and a processor for executing computer program instructions, wherein when the computer program instructions are executed by the processor, trigger The computing device executes the method described in the present invention.
  • the Bluetooth network-based communication method, its nodes, and communication system provided by the present invention can realize flexible and minimum configuration of relay nodes according to actual network topology scenarios, and prevent too many relay nodes in the network, resulting in excessive forwarding of broadcast packets. And affect the network throughput.
  • FIG. 1 is a schematic flowchart of a communication method based on a Bluetooth network according to the first embodiment of the present invention
  • Figure 2 is a schematic diagram of a Bluetooth network topology according to the first embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of a communication method based on a Bluetooth network according to the second embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a Bluetooth network topology change according to the second embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of a communication method based on a Bluetooth network according to the third embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a Bluetooth end node according to the fourth embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a Bluetooth gateway node according to Embodiment 5 of the present invention.
  • FIG. 8 is a schematic structural diagram of a Bluetooth relay node according to the sixth embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a Bluetooth communication network system according to the seventh embodiment of the present invention.
  • Fig. 1 is a schematic flowchart of a Bluetooth network-based communication method according to the first embodiment of the present invention. As shown in Fig. 1, the Bluetooth network-based communication method provided by the first embodiment of the present invention is applied to a Bluetooth end node, and the method includes:
  • Step S101 If there is a relay node in the adjacent Bluetooth node, data communication is performed through the relay node.
  • Step S102 If the neighboring Bluetooth nodes do not have a relay node, broadcast and send a configuration relay request message to request the gateway node to select and configure a relay node from the neighboring Bluetooth nodes.
  • FIG. 2 is a schematic diagram of the Bluetooth network topology in the first embodiment of the present invention.
  • the Bluetooth network in the embodiment of the present invention includes: a gateway node and node 1, node 2, node 3, node 4, and node 5.
  • Each node can use a normal Bluetooth device, and the gateway node needs to meet the minimum network computing and storage requirements of the Bluetooth network.
  • the gateway node In the initial stage, there is only a gateway node in the Bluetooth network, and the gateway node has a relay function.
  • node 1 applies to join the Bluetooth network. After node 1 joins the network, node 1 turns on neighbor_discover for neighboring nodes, and finds that there are nodes with relay function in neighboring nodes, namely gateway nodes, and chooses not to turn on the relay function.
  • node 2 applies to join the Bluetooth network.
  • node 2 turns on neighbor_discover for neighboring nodes, and finds that there is a node with a relay function in the neighboring nodes, that is, a gateway node, so it chooses not to turn on the relay function.
  • node 3 applies to join the Bluetooth network.
  • node 3 turns on neighbor_discover for neighboring nodes, and finds that there are nodes 1 and 2 among neighboring nodes, but they are not nodes with relay functions.
  • the node 3 broadcasts a relay_config requesting configuration relay message.
  • node 1 and node 2 both receive the relay_config request configuration relay message, and respectively add the address information of node 1 and node 2 to the relay_config packet, and then forward it to the gateway node in the form of broadcast. Then the gateway node will receive the relay_config request configuration relay message from node 1 and node 2, and the relay_config message includes 2 paths:
  • the gateway node selects node 1 or node 2 to enable the relay function according to preset selection conditions, such as whether the power supply is long, signal strength, online time length, request arrival time, etc. For example, the gateway node selects node 1 to enable the relay function, and sends an enable relay request enable_relay to node 1.
  • the request contains the address information of node 3. After node 1 receives the enable_relay request to enable the relay, it turns on the relay function, and returns a success reply to the gateway node to successfully enable the relay function.
  • node 1 maintains a list of child nodes locally, records that node 3 belongs to the end node of relay node 1, and sends a relay notification message relay_notification to node 3 to inform node 3 that its neighboring relay node is node 1.
  • node 3 and node 2 are end nodes, and node 1 is a relay node.
  • node 3 performs data communication, it checks the local node list and finds that node 1 is its relay node, then node 3 performs data communication through node 1.
  • node 3 If node 3 moves and cannot connect to node 1, then node 3 scans neighbor_discover for neighboring nodes, and finds that there is no node 1 in the neighboring nodes, that is, there is no node with relay function, then node 3 broadcasts and sends a configuration relay message request , The configuration request relay message is sent to the gateway node through other nodes, and the gateway node automatically configures the relay function to make node 3 reconnect to the Bluetooth network.
  • the end node can also become a relay node.
  • relay nodes can also become end nodes. That is, in addition to the gateway node, each network node can turn on the relay function to become a relay node or not to turn on the relay function and become an end node based on the instructions of the gateway node.
  • the communication method based on the Bluetooth network provided by the first embodiment of the present invention can realize the flexible and minimum configuration of relay node roles according to the actual network topology scenario, and prevent too many relay nodes in the network, leading to excessive forwarding of broadcast packets and affecting Network throughput.
  • the communication method in Embodiment 1 of the present invention further includes:
  • Step S103 If a relay notification message sent by the neighboring Bluetooth node is received, the neighboring Bluetooth node is recorded as a relay node.
  • the communication method in Embodiment 1 of the present invention further includes:
  • Step S104 broadcast and send the relay notification message.
  • node 3 after node 3 receives the relay notification message, that is, after learning that node 1 has a relay function, it can notify other neighboring nodes. When other neighboring nodes of node 3 need to connect to the Bluetooth network, they can directly use node 1. Connect, avoid other adjacent nodes repeatedly sending request configuration relay messages, and further reduce network throughput.
  • Fig. 3 is a schematic flowchart of a communication method based on a Bluetooth network according to the second embodiment of the present invention.
  • the second embodiment of the present invention provides a communication method based on a Bluetooth network for a Bluetooth gateway node.
  • the method includes:
  • Step S201 Receive a configuration request relay message; wherein the configuration request relay message includes: a propagation path set in sequence by an end node, an intermediate node, and a gateway node.
  • Step S202 According to a preset selection condition, a relay node is selected from the intermediate nodes of the propagation path.
  • Step S203 Send a relay-on request to the relay node; wherein the relay-on request includes: address information of the end node.
  • node 1 applies to join the Bluetooth network. After node 1 joins the network, node 1 turns on neighbor_discover for neighboring nodes, and finds that there are nodes with relay function in neighboring nodes, that is, gateway nodes, so choose not to turn on Relay function. After that, node 2 applies to join the Bluetooth network. Similarly, node 2 turns on neighbor_discover for neighboring nodes, and finds that there is a node with a relay function in the neighboring nodes, that is, a gateway node, so it chooses not to turn on the relay function. After that, node 3 applies to join the Bluetooth network.
  • node 3 turns on neighbor_discover for neighboring nodes, and finds that there are nodes 1 and 2 among neighboring nodes, but they are not nodes with relay functions.
  • the node 3 broadcasts a relay_config requesting configuration relay message.
  • node 1 and node 2 both receive the relay_config request configuration relay message, and respectively add the address information of node 1 and node 2 to the relay_config packet, and then forward it to the gateway node in the form of broadcast.
  • the gateway node will receive the relay_config request configuration relay message from node 1 and node 2, and the relay_config message includes 2 paths:
  • the gateway node selects node 1 or node 2 to enable the relay function according to preset selection conditions, such as whether the power supply is long, signal strength, online time length, request arrival time, etc. For example, the gateway node selects node 1 to enable the relay function, and sends an enable relay request enable_relay to node 1.
  • the request contains the address information of node 3. After node 1 receives the enable_relay request to enable the relay, it turns on the relay function, and returns a success reply to the gateway node to successfully enable the relay function.
  • node 1 maintains a list of child nodes locally, records that node 3 belongs to the end node of relay node 1, and sends a relay notification message relay_notification to node 3 to inform node 3 that its neighboring relay node is node 1.
  • node 3 and node 2 are end nodes, and node 1 is a relay node.
  • node 3 performs data communication, it checks the local node list and finds that node 1 is its relay node, then node 3 performs data communication through node 1.
  • node 4 has applied to join the Bluetooth network. Similarly, node 4 turns on neighbor_discover for neighboring nodes, and finds that neighboring neighbors include node 1, node 2, and node 3. Among them, node 1 turns on the relay function, and node 4 selects Do not open the relay function.
  • Node 5 applies to join the Bluetooth network. Similarly, node 5 turns on neighbor_discover for neighboring nodes, and finds that neighboring neighbors include node 2, node 3, and node 4, but the relay function is not turned on. At this time, the node 5 sends a relay_config requesting configuration relay message to the gateway device, and the message is also sent in the manner of a Bluetooth Mesh broadcast packet.
  • node 2, node 3, and node 4 all receive the relay_config request configuration relay message, and add the address information of node 2, node 3, and node 4 to the relay_config packet respectively, and then forward it in the form of broadcast.
  • the relay_config packet forwarded by node 4 will reach node 1, node 2, and node 3 respectively.
  • node 2 and node 3 find that the relay_config packet has been forwarded once, and will not forward it again. Since node 1 is a relay node, its respective node address information will be added to the relay_config packet again, and broadcast and forwarded again.
  • the gateway node will receive the relay_config package of four different paths, namely:
  • the gateway node selects a suitable node to enable the relay capability according to preset selection conditions. For example, the gateway node selects node 4 to enable the relay function, and sends the enable relay request enable_relay to node 4.
  • the request contains the address information of node 5.
  • node 1 will first locally record that node 5 belongs to the end child node of relay node 1.
  • node 4 receives the enable_relay request to enable relay, it turns on the relay capability and returns a success reply to the gateway node.
  • node 4 maintains a list of child nodes locally, and records that node 5 belongs to the end child node of relay node 4.
  • node 4 sends a relay notification message relay_notification to node 5 to inform node 5 that its neighboring relay node is node 4.
  • the communication method based on the Bluetooth network provided by the second embodiment of the present invention can realize the flexible and minimum configuration of relay node roles according to the actual network topology scenario, and prevent too many relay nodes in the network, leading to too many broadcast packets being forwarded and affecting Network throughput.
  • the preset selection condition includes:
  • the requesting Bluetooth node refers to a node that broadcasts a request to configure a relay message. As shown in Figure 2, the requesting Bluetooth node is node 3. If the node 1 is a Bluetooth device that supplies power for a long time, it is preferable that the node 1 turns on the relay function. If the long-term power supply information cannot be obtained, judge according to the signal strength of the requesting node 3 and node 1 and node 2 respectively.
  • the signal strength of node 1 and node 3 is stronger, select node 1 to enable the relay function, and the signal strength It is determined that the RSSI data (Received Signal Strength Indication, received signal strength indication) of node 1 can be obtained. If the signal strengths of node 1 and node 2 are the same as or similar to that of node 3, the node with a long online time is selected. If the online time cannot be obtained, the arrival time of the relay message is configured according to the request, and the node with the shorter request arrival time is selected.
  • RSSI data Receiveived Signal Strength Indication, received signal strength indication
  • the communication method in the second embodiment of the present invention further includes:
  • Step S204 If it is found that the relay node of the end node has changed, send a child node list update message to the original relay node.
  • FIG 4 is a schematic diagram of the Bluetooth network topology change in the second embodiment of the present invention.
  • node 5 assuming that node 5 is moved, and node 5 sends data packets three times without receiving an ACK reply, it is considered that there is no relay nearby node.
  • Node 5 turns on neighbor_discover for neighboring nodes, and finds that there is only node 2 in its neighbors, but node 2 does not enable the relay capability.
  • the node 5 broadcasts a relay_config requesting configuration relay message.
  • node 2 will receive the relay_config request configuration relay message, and add the address information of node 2 to the relay_config packet, and then forward it to the gateway node in the form of broadcast.
  • the gateway node selects node 2 to enable the relay capability, and sends the enable relay request enable_relay to node 2.
  • the open relay request contains the address information of node 5.
  • node 2 receives the enable_relay, it turns on the relay capability and returns a success reply to the gateway node.
  • node 2 maintains a list of child nodes locally, records that node 5 belongs to the end child node of relay node 2, and sends a relay_notification message to node 5 to inform node 5 that its neighboring relay node is node 2.
  • the gateway node sends a child node list update message update to the node 4, which contains the address information of the node 5, and informs the node 4 to delete the address information of the node 5 in the local child node list.
  • FIG. 5 is a schematic flowchart of a communication method based on a Bluetooth network in the third embodiment of the present invention.
  • the third embodiment of the present invention provides a communication method based on a Bluetooth network for a Bluetooth relay node.
  • the method includes :
  • Step S301 Receive a configuration relay request message.
  • Step S302 If the relay function is enabled, add the address information of the local node to the configuration request message, and broadcast the configuration request message.
  • Step S303 If the relay function is not enabled, only add the address information of the local node for the configuration relay message that has not been forwarded, and broadcast the configuration relay message that has not been forwarded.
  • node 5 applies to join the Bluetooth network. Similarly, node 5 turns on neighbor_discover for neighboring nodes, and finds that there are node 2, node 3, and node 4 in the neighboring neighbors, but the relay function is not turned on. At this time, the node 5 sends a relay_config requesting configuration relay message to the gateway device, and the message is also sent in the manner of a Bluetooth Mesh broadcast packet. At this time, node 2, node 3, and node 4 all receive the relay_config request configuration relay message, and add the address information of node 2, node 3, and node 4 to the relay_config packet respectively, and then forward it in the form of broadcast.
  • the relay_config packet forwarded by node 4 will reach node 1, node 2, and node 3 respectively.
  • node 2 and node 3 find that the relay_config packet has been forwarded once, and will not forward it again.
  • node 1 is a relay node, its respective node address information will be added to the relay_config packet again, and broadcast and forwarded again.
  • the gateway node will receive the relay_config package of four different paths, namely:
  • the gateway node selects a node to enable the relay capability according to preset selection conditions. For example, the gateway node selects node 4 to enable the relay function, and sends the enable relay request enable_relay to node 4.
  • the request contains the address information of node 5.
  • node 1 will first locally record that node 5 belongs to the end child node of relay node 1.
  • node 4 receives the enable_relay request to enable relay, it turns on the relay capability and returns a success reply to the gateway node.
  • node 4 maintains a list of child nodes locally, and records that node 5 belongs to the end child node of relay node 4.
  • node 4 sends a relay notification message relay_notification to node 5 to inform node 5 that its neighboring relay node is node 4.
  • the communication method in the third embodiment of the present invention further includes:
  • Step S304 Turn on the relay function according to the request to turn on the relay; wherein the request to turn on the relay includes: the address information of the end node;
  • Step S305 record the end node in the local node list
  • Step S306 Send a relay notification message to the end node.
  • the communication method described in the third embodiment of the present invention further includes:
  • the changed end node is deleted from the local node list according to the child node list update message.
  • node 5 As shown in Fig. 4, assuming that the node 5 has moved its position, and the node 5 sends a data packet three consecutive times without receiving an ACK reply, it is considered that there is no relay node nearby. Node 5 turns on neighbor_discover for neighboring nodes, and finds that there is only node 2 in its neighbors, but node 2 does not enable the relay capability. At this time, the node 5 broadcasts a relay_config requesting configuration relay message. At this time, node 2 will receive the relay_config request configuration relay message, and add the address information of node 2 to the relay_config packet, and then forward it to the gateway node in the form of broadcast.
  • the gateway node selects node 2 to enable the relay capability, and sends the enable relay request enable_relay to node 2.
  • the open relay request contains the address information of node 5.
  • node 2 receives the enable_relay, it turns on the relay capability and returns a success reply to the gateway node.
  • node 2 maintains a list of child nodes locally, records that node 5 belongs to the end child node of relay node 2, and sends a relay_notification message to node 5 to inform node 5 that its neighboring relay node is node 2.
  • the gateway node sends a child node list update message update to the node 4, which contains the address information of the node 5, and informs the node 4 to delete the address information of the node 5 in the local child node list.
  • the communication method described in the third embodiment of the present invention further includes:
  • the relay function is turned off, and a relay message requesting configuration is broadcast to neighboring Bluetooth nodes.
  • node 4 if the location of node 4 changes and it cannot connect to node 1 and fails to connect to the network, node 4 turns off the relay function and broadcasts as an end node a request configuration relay message to pass adjacent The node requests the gateway node to configure a relay node for it to connect to the Bluetooth network.
  • FIG. 6 is a schematic structural diagram of a Bluetooth end node according to the fourth embodiment of the present invention.
  • the Bluetooth end node 40 according to the fourth embodiment of the present invention includes a communication module 41 and a broadcasting module 42.
  • the communication module 41 is configured to perform data communication through the relay node if there is a relay node in the adjacent Bluetooth node.
  • the broadcast module 42 is configured to broadcast and send a configuration relay request message if the neighboring Bluetooth nodes do not have a relay node, so as to request the gateway node to select and configure a relay node from the neighboring Bluetooth nodes.
  • the Bluetooth end node of the fourth embodiment of the present invention further includes: a relay node recording module 43.
  • the relay node recording module 43 is configured to record the adjacent Bluetooth node as a relay node if a relay notification message sent by a neighboring Bluetooth node is received.
  • the broadcasting module 42 is further configured to: broadcast and send the relay notification message.
  • the Bluetooth end node in the fourth embodiment of the present invention is a device for implementing the communication method shown in FIG. 1.
  • FIG. 1 For details, please refer to the first embodiment in FIG. 1, which will not be repeated here.
  • FIG. 7 is a schematic structural diagram of a Bluetooth gateway node according to the fifth embodiment of the present invention.
  • the Bluetooth gateway node 50 according to the fourth embodiment of the present invention includes: a first receiving module 51, a relay node configuration module 52, and a relay Node start module 53.
  • the first receiving module 51 is configured to receive a configuration request relay message; wherein the configuration request relay message includes: a propagation path sequentially set by an end node, an intermediate node, and a gateway node;
  • the relay node configuration module 52 is configured to select a relay node from the intermediate nodes of the propagation path according to a preset selection condition
  • the relay node activation module 53 is configured to send a relay activation request to the relay node; wherein the relay activation request includes: address information of the end node.
  • the preset selection condition includes:
  • the Bluetooth gateway node in the fifth embodiment of the present invention further includes: a first update module 54.
  • the first update module 54 is configured to send a child node list update message to the original relay node if it is found that the relay node of the end node has changed.
  • the Bluetooth gateway node in the fifth embodiment of the present invention is a device for implementing the communication method shown in FIG. 2.
  • FIG. 2 For details, please refer to the second embodiment in FIG.
  • FIG. 8 is a schematic structural diagram of a Bluetooth relay node according to the sixth embodiment of the present invention.
  • a Bluetooth relay node 60 is provided, which includes: a second receiving module 61 and a relay function module 62.
  • the second receiving module 61 is configured to receive a configuration request relay message.
  • the relay function module 62 is used for:
  • the address information of the local node is added only for the configuration relay message that has not been forwarded, and the configuration relay message that has not been forwarded is broadcasted.
  • the relay function module 62 is also used for:
  • the relay function is turned on according to the request to turn on the relay; wherein the request to turn on the relay includes: address information of the end node;
  • the Bluetooth relay node in the sixth embodiment of the present invention further includes: a second update module 63.
  • the second update module 63 is configured to, if a child node list update message is received, delete the changed end node from the local node list according to the child node list update message.
  • the Bluetooth relay node in the sixth embodiment of the present invention further includes: a reset module 64.
  • the reset module 64 is configured to turn off the relay function if the network connection fails, and broadcast and send a configuration relay request message to neighboring Bluetooth nodes.
  • the Bluetooth relay node in the sixth embodiment of the present invention is a device for implementing the communication method shown in FIG. 3.
  • FIG. 3 For details, please refer to the third embodiment in FIG. 3, which will not be repeated here.
  • Fig. 9 is a schematic structural diagram of a Bluetooth communication network system according to the seventh embodiment of the present invention.
  • the Bluetooth communication network system according to the seventh embodiment of the present invention includes: the Bluetooth end node 40 shown in Fig. 6 and shown in Fig. 7 The Bluetooth gateway node 50 and the Bluetooth relay node 60 shown in FIG. 8.
  • the Bluetooth communication network system of the seventh embodiment of the present invention adopts the Bluetooth end node 40 shown in FIG. 6, the Bluetooth gateway node 50 shown in FIG. 7, and the Bluetooth relay node 60 shown in FIG. 8.
  • the Bluetooth end node 40 shown in FIG. 6 the Bluetooth gateway node 50 shown in FIG. 7, and the Bluetooth relay node 60 shown in FIG. 8.
  • Examples 5, 6, and 7 will not be repeated here.
  • a storage device stores computer program instructions, and the computer program instructions are executed according to the method of the present invention.
  • the storage device includes permanent and non-permanent, removable and non-removable media, and information storage can be realized by any method or technology.
  • the information can be computer readable instructions, data structures, program devices, or other data.
  • Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical storage, magnetic cassette type Magnetic tape, magnetic tape disk storage or other magnetic storage devices or any other non-transmission media can be used to store information that can be accessed by computing devices.
  • PRAM phase change memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • RAM random access memory
  • ROM read-only memory
  • EEPROM electrically erasable programmable read-only memory
  • flash memory or other memory technologies
  • a computing device including: a memory for storing computer program instructions and a processor for executing computer program instructions, wherein when the computer program instructions are executed by the processor, the The computing device executes the method described in the present invention.
  • the computing devices all include one or more processors (CPU), input/output interfaces, network interfaces, and memory.
  • processors CPU
  • input/output interfaces network interfaces
  • memory volatile and non-volatile memory
  • the memory may include non-permanent memory in a computer readable medium, random access memory (RAM) and/or non-volatile memory, such as read-only memory (ROM) or flash memory (flash RAM). Memory is an example of computer readable media.
  • RAM random access memory
  • ROM read-only memory
  • flash RAM flash memory
  • the computing device referred to in the present invention includes, but is not limited to, any electronic product that can perform human-computer interaction with a user (for example, human-computer interaction through a touch panel), such as mobile electronic products such as smart phones and tablet computers.
  • Any operating system can be used, such as android operating system, iOS operating system, etc.
  • the present invention can be implemented in software and/or a combination of software and hardware.
  • it can be implemented by an application specific integrated circuit (ASIC), a general purpose computer or any other similar hardware device.
  • the software program of the present invention may be executed by a processor to realize the above steps or functions.
  • the software program (including related data structure) of the present invention can be stored in a computer-readable recording medium, such as a RAM memory, a magnetic or optical drive or a floppy disk and similar devices.
  • some steps or functions of the present invention may be implemented by hardware, for example, as a circuit that cooperates with a processor to execute each step or function.

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Abstract

本发明提供一种基于蓝牙网络的通信方法、及其节点和通信系统，用于蓝牙末端节点通信方法包括：若相邻蓝牙节点中具有中继节点，则通过所述中继节点进行数据通信；若所述相邻蓝牙节点中不具有中继节点，则广播发送请求配置中继消息，以请求网关节点从所述相邻蓝牙节点中选择配置中继节点。本发明提供的基于蓝牙网络的通信方法、及其节点和通信系统，可以实现按照实际的网络拓扑场景来灵活、最低数量配置中继节点，防止网络中中继节点过多，导致转发广播包过多而影响网络吞吐量。

Description

一种基于蓝牙网络的通信方法、及其节点和通信系统
本申请要求2020年02月12日递交的申请号为202010089201.9、发明创造名称为“一种基于蓝牙网络的通信方法、及其节点和通信系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及信息技术领域，尤其涉及一种基于蓝牙网络的通信方法、及其节点和通信系统。
背景技术
针对物联网设备通信的应用场景，蓝牙技术联盟SIG于2017年发布了蓝牙Mesh协议，可以实现网状的网络拓扑，支持多跳连接，扩大了蓝牙网络的覆盖范围，特别适合智能家居、智能楼宇的物联网设备通信场景。但是蓝牙Mesh协议是基于广播泛洪flooding的通信机制，对于每一个蓝牙Mesh节点是通过广播包发出蓝牙Mesh消息，所有其他节点在收到这个广播包后，会进行一次转发，直到目的地址节点收到这条蓝牙Mesh消息。这会造成一些无效、不必要的广播包在蓝牙Mesh网络中被发送，从而对蓝牙Mesh网络的吞吐量造成影响。
发明内容
本发明的一个目的是提供一种基于蓝牙网络的通信方法、及其节点和通信系统，以解决现有蓝牙网络的吞吐量过高的问题。
根据本发明的第一方面，提供一种基于蓝牙网络的通信方法，用于蓝牙末端节点，该方法包括：
若相邻蓝牙节点中具有中继节点，则通过所述中继节点进行数据通信；
若所述相邻蓝牙节点中不具有中继节点，则广播发送请求配置中继消息，以请求网关节点从所述相邻蓝牙节点中选择配置中继节点。
进一步，本发明第一方面所述的通信方法，还包括：
若接收到所述相邻蓝牙节点发送的中继通知消息，则将该相邻蓝牙节点记录为中继 节点。
进一步，本发明第一方面所述的通信方法，广播发送所述中继通知消息。
根据本发明的第二方面，提供一种基于蓝牙网络的通信方法，用于蓝牙网关节点，该方法包括：
接收请求配置中继消息；其中，所述请求配置中继消息包含：末端节点、中间节点、网关节点依次顺序设置的传播路径；
根据预设选择条件，从所述传播路径的所述中间节点中选择中继节点；
向所述中继节点发送开启中继请求；其中，所述开启中继请求包括：所述末端节点的地址信息。
进一步，本发明第二方面所述的通信方法，所述预设选择条件包括：
选择长供电蓝牙节点；
选择与其他蓝牙节点相比，相对于请求蓝牙节点信号强度高的蓝牙节点；
选择与其他蓝牙节点相比，在线时间长的蓝牙节点；
选择与其他蓝牙节点相比，请求配置中继消息到达时间早的蓝牙节点。
进一步，本发明第二方面所述的通信方法，还包括：
若发现所述末端节点的中继节点发生变更，向原中继节点发送子节点列表更新消息。
根据本发明的第三方面，提供一种基于蓝牙网络的通信方法，用于蓝牙中继节点，该方法包括：
接收请求配置中继消息；
若开启中继功能，则在所述请求配置中继消息添加本地节点的地址信息，并广播发送所述请求配置中继消息；
若未开启中继功能，则仅针对未被转发过的请求配置中继消息添加本地节点的地址信息，并广播发送所述未被转发过的请求配置中继消息。
进一步，本发明第三方面所述的通信方法，还包括：
根据开启中继请求开启中继功能；其中，所述开启中继请求包括：末端节点的地址信息；
在本地节点列表记录所述末端节点；
向所述末端节点发送中继通知消息。
进一步，本发明第三方面所述的通信方法，还包括：
若接收到子节点列表更新消息，根据所述子节点列表更新消息从本地节点列表中删 除已变更的末端节点。
进一步，本发明第三方面所述的通信方法，还包括：
若连接网络失败，关闭中继功能，向相邻蓝牙节点广播发送请求配置中继消息。
根据本发明的第四方面，提供一种蓝牙末端节点，包括：
通信模块，用于若相邻蓝牙节点中具有中继节点，则通过所述中继节点进行数据通信；
广播模块，用于若所述相邻蓝牙节点中不具有中继节点，则广播发送请求配置中继消息，以请求网关节点从所述相邻蓝牙节点中选择配置中继节点。
进一步，本发明第四方面所述的蓝牙末端节点，还包括：
中继节点记录模块，用于若接收到相邻蓝牙节点发送的中继通知消息，则将该相邻蓝牙节点记录为中继节点。
进一步，本发明第四方面所述的蓝牙末端节点，所述广播模块还用于：广播发送所述中继通知消息。
根据本发明的第五方面，提供一种蓝牙网关节点，包括：
第一接收模块，用于接收请求配置中继消息；其中，所述请求配置中继消息包含：末端节点、中间节点、网关节点依次顺序设置的传播路径；
中继节点配置模块，用于根据预设选择条件，从所述传播路径的所述中间节点中选择中继节点；
中继节点启动模块，用于向所述中继节点发送开启中继请求；其中，所述开启中继请求包括：所述末端节点的地址信息。
进一步，本发明第五方面所述的蓝牙网关节点，所述预设选择条件包括：
选择长供电蓝牙节点；
选择与其他蓝牙节点相比，相对于请求蓝牙节点信号强度高的蓝牙节点；
选择与其他蓝牙节点相比，在线时间长的蓝牙节点；
选择与其他蓝牙节点相比，请求配置中继消息到达时间早的蓝牙节点。
进一步，本发明第五方面所述的蓝牙网关节点，还包括：
第一更新模块，用于若发现所述末端节点的中继节点发生变更，向原中继节点发送子节点列表更新消息。
根据本发明的第六方面，提供一种蓝牙中继节点，包括：
第二接收模块，用于接收请求配置中继消息；
中继功能模块，用于：
若开启中继功能，则在所述请求配置中继消息添加本地节点的地址信息，并广播发送所述请求配置中继消息；
若未开启中继功能，则仅针对未被转发过的请求配置中继消息添加本地节点的地址信息，并广播发送所述未被转发过的请求配置中继消息。
进一步，本发明第六方面所述的蓝牙中继节点，中继功能模块还用于：
根据开启中继请求开启中继功能；其中，所述开启中继请求包括：末端节点的地址信息；
在本地节点列表记录所述末端节点；
向所述末端节点发送中继通知消息。
进一步，本发明第六方面所述的蓝牙中继节点，还包括：
第二更新模块，用于若接收到子节点列表更新消息，根据所述子节点列表更新消息从本地节点列表中删除已变更的末端节点。
进一步，本发明第六方面所述的蓝牙中继节点，还包括：
重置模块，用于若连接网络失败，关闭中继功能，向相邻蓝牙节点广播发送请求配置中继消息。
根据本发明的第七方面，提供一种蓝牙通信网络系统，包括：本发明第四方面所述的蓝牙末端节点、本发明第五方面所述的蓝牙网关节点和本发明第六方面所述的蓝牙中继节点。
根据本发明的第八方面，提供一种存储设备，所述存储设备存储计算机程序指令，所述计算机程序指令根据本发明所述的方法进行执行。
根据本发明的第九方面，提供一种计算设备，包括：用于存储计算机程序指令的存储器和用于执行计算机程序指令的处理器，其中，当该计算机程序指令被该处理器执行时，触发所述计算设备执行本发明所述的方法。
本发明提供的基于蓝牙网络的通信方法、及其节点和通信系统，可以实现按照实际的网络拓扑场景来灵活、最低数量配置中继节点，防止网络中中继节点过多，导致转发广播包过多而影响网络吞吐量。
附图说明
通过阅读参照以下附图所作的对非限制性实施例所作的详细描述，本发明的其它特 征、目的和优点将会变得更明显：
图1为本发明实施例一的基于蓝牙网络的通信方法的流程示意图；
图2为本发明实施例一的蓝牙网络拓扑示意图；
图3为本发明实施例二的基于蓝牙网络的通信方法的流程示意图；
图4为本发明实施例二的蓝牙网络拓扑变化示意图；
图5为本发明实施例三的基于蓝牙网络的通信方法的流程示意图；
图6为本发明实施例四的蓝牙末端节点的结构示意图；
图7为本发明实施例五的蓝牙网关节点的结构示意图；
图8为本发明实施例六的蓝牙中继节点的结构示意图；
图9为本发明实施例七的蓝牙通信网络系统的结构示意图；
附图中相同或相似的附图标记代表相同或相似的部件。
具体实施方式
下面结合附图对本发明作进一步详细描述。
图1为本发明实施例一的基于蓝牙网络的通信方法的流程示意图，如图1所示，本发明实施例一提供的基于蓝牙网络的通信方法，用于蓝牙末端节点，该方法包括：
步骤S101，若相邻蓝牙节点中具有中继节点，则通过所述中继节点进行数据通信。
步骤S102，若所述相邻蓝牙节点中不具有中继节点，则广播发送请求配置中继消息，以请求网关节点从所述相邻蓝牙节点中选择配置中继节点。
图2为本发明实施例一的蓝牙网络拓扑示意图，如图2所示，本发明实施例的蓝牙网络包括：网关节点和节点1、节点2、节点3、节点4、节点5。各个节点均可采用正常的蓝牙设备，网关节点则需要符合该蓝牙网络的最低网络计算及存储要求。起始阶段，该蓝牙网络中只有网关节点，网关节点具有中继功能。首先，节点1申请加入蓝牙网络，在节点1加入网络后，节点1开启临近节点扫描neighbor_discover，发现周边相邻节点中存在具备中继功能的节点，即网关节点，则选择不开启中继功能。之后，节点2申请加入了该蓝牙网络，同样节点2开启临近节点扫描neighbor_discover，发现周边相邻节点中存在具备中继功能的节点，即网关节点，则选择不开启中继功能。之后，节点3申请加入了该蓝牙网络，同样节点3开启临近节点扫描neighbor_discover，发现周边相邻节点中有节点1与节点2，但都不是具备中继功能的节点。此时节点3广播发送请求配置中继消息relay_config。此时节点1与节点2都会收到所述请求配置中继消息 relay_config，并分别在该relay_config包中增加节点1与节点2的地址信息，之后以广播形式转发至网关节点。之后网关节点会收到分别来自节点1与节点2的请求配置中继消息relay_config，relay_config消息包括2条路径：
节点3至节点1至网关节点；
节点3至节点2至网关节点。
网关节点根据预设选择条件，例如是否长供电、信号强度、在线时间长短、请求到达时间等，选择节点1或节点2开启中继功能。例如，网关节点选择节点1开启中继功能，并发送开启中继请求enable_relay到节点1。该请求包含节点3的地址信息。节点1收到该开启中继请求enable_relay后，开启中继功能，并向网关节点返回success回复成功开启中继功能。并且节点1在本地维护子节点列表，记录下节点3属于中继节点1的末端节点，同时向节点3发送中继通知消息relay_notification，告知节点3，它的临近中继节点是节点1。此时，节点3和节点2为末端节点，节点1为中继节点。节点3进行数据通信时，检查本地节点列表，发现节点1是其中继节点，则节点3通过节点1进行数据通信。如果节点3发生位置移动，无法连接到节点1，则节点3进行临近节点扫描neighbor_discover，发现相邻节点中没有节点1，即没有具有中继功能的节点，则节点3广播发送请求配置中继消息，通过其他节点将请求配置中继消息发送至网关节点，由网关节点自动配置中继功能，使节点3重新连接至蓝牙网络。
具体地，根据新加入的节点，末端节点也可变为中继节点。而由于末端节点的减少，中继节点也可变为末端节点。即除了网关节点之外，各个网络节点均可基于网关节点的指令，开启中继功能而成为中继节点或者不开启中继功能而成为末端节点。
本发明实施例一提供的基于蓝牙网络的通信方法，可以实现按照实际的网络拓扑场景来灵活、最低数量配置中继节点角色，防止网络中中继节点过多，导致转发广播包过多，影响网络吞吐量。
进一步，本发明实施例一的通信方法，还包括：
步骤S103，若接收到所述相邻蓝牙节点发送的中继通知消息，则将该相邻蓝牙节点记录为中继节点。
进一步，本发明实施例一的通信方法，还包括：
步骤S104，广播发送所述中继通知消息。
具体地，节点3收到中继通知消息后，即获悉节点1具有中继功能后，可以告知其他相邻节点，当节点3的其他相邻节点需要连接蓝牙网络时，可以直接通过节点1进行 连接，避免其他相邻节点重复发送请求配置中继消息，进一步降低网络吞吐量。
图3为本发明实施例二的基于蓝牙网络的通信方法的流程示意图，如图3所示，本发明实施例二提供一种基于蓝牙网络的通信方法，用于蓝牙网关节点，该方法包括：
步骤S201，接收请求配置中继消息；其中，所述请求配置中继消息包含：末端节点、中间节点、网关节点依次顺序设置的传播路径。
步骤S202，根据预设选择条件，从所述传播路径的所述中间节点中选择中继节点。
步骤S203，向所述中继节点发送开启中继请求；其中，所述开启中继请求包括：所述末端节点的地址信息。
如图2所示，节点1申请加入蓝牙网络，在节点1加入网络后，节点1开启临近节点扫描neighbor_discover，发现周边相邻节点中存在具备中继功能的节点，即网关节点，则选择不开启中继功能。之后，节点2申请加入了该蓝牙网络，同样节点2开启临近节点扫描neighbor_discover，发现周边相邻节点中存在具备中继功能的节点，即网关节点，则选择不开启中继功能。之后，节点3申请加入了该蓝牙网络，同样节点3开启临近节点扫描neighbor_discover，发现周边相邻节点中有节点1与节点2，但都不是具备中继功能的节点。此时节点3广播发送请求配置中继消息relay_config。此时节点1与节点2都会收到所述请求配置中继消息relay_config，并分别在该relay_config包中增加节点1与节点2的地址信息，之后以广播形式转发至网关节点。之后网关节点会收到分别来自节点1与节点2的请求配置中继消息relay_config，relay_config消息包括2条路径：
节点3至节点1至网关节点；
节点3至节点2至网关节点。
网关节点根据预设选择条件，例如是否长供电、信号强度、在线时间长短、请求到达时间等，选择节点1或节点2开启中继功能。例如，网关节点选择节点1开启中继功能，并发送开启中继请求enable_relay到节点1。该请求包含节点3的地址信息。节点1收到该开启中继请求enable_relay后，开启中继功能，并向网关节点返回success回复成功开启中继功能。并且节点1在本地维护子节点列表，记录下节点3属于中继节点1的末端节点，同时向节点3发送中继通知消息relay_notification，告知节点3，它的临近中继节点是节点1。此时，节点3和节点2为末端节点，节点1为中继节点。节点3进行数据通信时，检查本地节点列表，发现节点1是其中继节点，则节点3通过节点1进行数据通信。
如图2所示，例如节点4申请加入了该蓝牙网络，同样节点4开启临近节点扫描neighbor_discover，发现周边邻居有节点1、节点2、节点3，其中节点1开启中继功能，节点4则选择不开启中继功能。节点5申请加入该蓝牙网络，同样节点5开启临近节点扫描neighbor_discover，发现周边邻居有节点2、节点3与节点4，但都未开启中继功能。此时节点5向网关设备发出请求配置中继消息relay_config，该消息也是以蓝牙Mesh广播包方式发送。此时节点2、节点3与节点4都会收到所述请求配置中继消息relay_config，并分别在该relay_config包中增加节点2、节点3与节点4的地址信息，之后以广播形式转发。其中，节点4转发出的relay_config包会分别到达节点1、节点2与节点3，此时节点2与节点3发现relay_config包已经被转发过一次，则不会再转发。而节点1因为是中继节点，则会再次在relay_config包上增加各自的节点地址信息，并再次广播转发。之后，网关节点会收到四个不同路径的relay_config包，分别为：
1)节点5-节点>3->节点1->网关节点；
2)节点5->节点4->节点1->网关节点；
3)节点5->节点2->网关节点；
4)节点5->节点2->1->网关节点。
网关节点根据预设选择条件，选择出合适的节点开启中继能力。例如网关节点选择节点4开启中继功能，并发送开启中继请求enable_relay到节点4。该请求包含节点5的地址信息。该开启中继请求enable_relay经过节点1时，节点1会首先在本地记录节点5属于中继节点1的末端子节点。节点4收到该开启中继请求enable_relay后，开启中继能力，并向网关节点返回success回复。并且节点4在本地维护子节点列表，记录节点5属于中继节点4的末端子节点。同时节点4向节点5发送中继通知消息relay_notification，告知节点5，它的临近中继节点是节点4。
本发明实施例二提供的基于蓝牙网络的通信方法，可以实现按照实际的网络拓扑场景来灵活、最低数量配置中继节点角色，防止网络中中继节点过多，导致转发广播包过多，影响网络吞吐量。
进一步，本发明实施例二的通信方法，所述预设选择条件包括：
选择长供电蓝牙节点；
选择与其他蓝牙节点相比，相对于请求蓝牙节点信号强度高的蓝牙节点；
选择与其他蓝牙节点相比，在线时间长的蓝牙节点；
选择与其他蓝牙节点相比，请求配置中继消息到达时间早的蓝牙节点。
具体地，可以按照优先级从高至低进行如下排序：长供电、信号强度、在线时间、请求配置中继消息到达时间。请求蓝牙节点指广播发送请求配置中继消息的节点。如图2所示，请求蓝牙节点为节点3。若节点1为长时间供电的蓝牙设备，则优选节点1开启中继功能。若无法获取长供电信息，则根据发起请求的节点3分别与节点1、节点2的信号强度进行判断，若节点1与节点3的信号强度更强，则选择节点1开启中继功能，信号强度判断可以节点1的RSSI数据(Received Signal Strength Indication，接收的信号强度指示)获取。若节点1、节点2均与节点3的信号强度相同或相近，则选择在线时间长的节点。若无法获取在线时间，则根据请求配置中继消息的到达时间，选择请求到达时长更短的节点。
进一步，本发明实施例二的通信方法，还包括：
步骤S204，若发现所述末端节点的中继节点发生变更，向原中继节点发送子节点列表更新消息。
图4为本发明实施例二的蓝牙网络拓扑变化示意图，如图4所示，假设节点5被移动了位置，节点5连续3次发送数据包没有收到ACK回复，则认为周边不存在中继节点。节点5开启临近节点扫描neighbor_discover，发现周边邻居仅有节点2，但节点2没有开启中继能力。此时节点5广播发送请求配置中继消息relay_config。此时节点2会收到所述请求配置中继消息relay_config，并在该relay_config包中增加节点2的地址信息，之后以广播形式转发至网关节点。此时网关节点选择节点2开启中继能力，并发送开启中继请求enable_relay到节点2。该开启中继请求包含节点5的地址信息。节点2收到该enable_relay后，开启中继能力，并向网关节点返回success回复。并且节点2在本地维护子节点列表，记录下节点5属于中继节点2的末端子节点，同时向节点5发送relay_notification消息，告知节点5，它的临近中继节点是节点2。同时，网关节点向节点4发送子节点列表更新消息update，该消息包含节点5的地址信息，告知节点4删去本地子节点列表中的节点5地址信息。
图5为本发明实施例三的基于蓝牙网络的通信方法的流程示意图，如图5所示，本发明实施例三提供一种基于蓝牙网络的通信方法，用于蓝牙中继节点，该方法包括：
步骤S301，接收请求配置中继消息。
步骤S302，若开启中继功能，则在所述请求配置中继消息添加本地节点的地址信息，并广播发送所述请求配置中继消息。
步骤S303，若未开启中继功能，则仅针对未被转发过的请求配置中继消息添加本地节点的地址信息，并广播发送所述未被转发过的请求配置中继消息。
如图2所示，节点5申请加入该蓝牙网络，同样节点5开启临近节点扫描neighbor_discover，发现周边邻居有节点2、节点3与节点4，但都未开启中继功能。此时节点5向网关设备发出请求配置中继消息relay_config，该消息也是以蓝牙Mesh广播包方式发送。此时节点2、节点3与节点4都会收到所述请求配置中继消息relay_config，并分别在该relay_config包中增加节点2、节点3与节点4的地址信息，之后以广播形式转发。其中，节点4转发出的relay_config包会分别到达节点1、节点2与节点3，此时节点2与节点3发现relay_config包已经被转发过一次，则不会再转发。而节点1因为是中继节点，则会再次在relay_config包上增加各自的节点地址信息，并再次广播转发。之后，网关节点会收到四个不同路径的relay_config包，分别为：
1)节点5-节点>3->节点1->网关节点；
2)节点5->节点4->节点1->网关节点；
3)节点5->节点2->网关节点；
4)节点5->节点2->1->网关节点。
网关节点根据预设选择条件，选择出一个节点开启中继能力。例如网关节点选择节点4开启中继功能，并发送开启中继请求enable_relay到节点4。该请求包含节点5的地址信息。该开启中继请求enable_relay经过节点1时，节点1会首先在本地记录节点5属于中继节点1的末端子节点。节点4收到该开启中继请求enable_relay后，开启中继能力，并向网关节点返回success回复。并且节点4在本地维护子节点列表，记录节点5属于中继节点4的末端子节点。同时节点4向节点5发送中继通知消息relay_notification，告知节点5，它的临近中继节点是节点4。
进一步，本发明实施例三的通信方法，还包括：
步骤S304，根据开启中继请求开启中继功能；其中，所述开启中继请求包括：末端节点的地址信息；
步骤S305，在本地节点列表记录所述末端节点；
步骤S306，向所述末端节点发送中继通知消息。
进一步，本发明实施例三所述的通信方法，还包括：
若接收到子节点列表更新消息，根据所述子节点列表更新消息从本地节点列表中删除已变更的末端节点。
如图4所示，假设节点5被移动了位置，节点5连续3次发送数据包没有收到ACK回复，则认为周边不存在中继节点。节点5开启临近节点扫描neighbor_discover，发现周边邻居仅有节点2，但节点2没有开启中继能力。此时节点5广播发送请求配置中继消息relay_config。此时节点2会收到所述请求配置中继消息relay_config，并在该relay_config包中增加节点2的地址信息，之后以广播形式转发至网关节点。此时网关节点选择节点2开启中继能力，并发送开启中继请求enable_relay到节点2。该开启中继请求包含节点5的地址信息。节点2收到该enable_relay后，开启中继能力，并向网关节点返回success回复。并且节点2在本地维护子节点列表，记录下节点5属于中继节点2的末端子节点，同时向节点5发送relay_notification消息，告知节点5，它的临近中继节点是节点2。同时，网关节点向节点4发送子节点列表更新消息update，该消息包含节点5的地址信息，告知节点4删去本地子节点列表中的节点5地址信息。
进一步，本发明实施例三所述的通信方法，还包括：
若连接网络失败，关闭中继功能，向相邻蓝牙节点广播发送请求配置中继消息。
例如，如图2所示，若节点4的位置发生变动，其无法连接到节点1，连接网络失败，则节点4关闭中继功能，作为末端节点广播发送请求配置中继消息，以通过相邻节点请求网关节点为其配置中继节点，连接至蓝牙网络。
图6为本发明实施例四的蓝牙末端节点的结构示意图，如图6所示，本发明实施例四的蓝牙末端节点40，包括：通信模块41和广播模块42。
通信模块41，用于若相邻蓝牙节点中具有中继节点，则通过所述中继节点进行数据通信。
广播模块42，用于若所述相邻蓝牙节点中不具有中继节点，则广播发送请求配置中继消息，以请求网关节点从所述相邻蓝牙节点中选择配置中继节点。
进一步，本发明实施例四的蓝牙末端节点，还包括：中继节点记录模块43。
中继节点记录模块43，用于若接收到相邻蓝牙节点发送的中继通知消息，则将该相邻蓝牙节点记录为中继节点。
进一步，本发明第四方面所述的蓝牙末端节点，所述广播模块42还用于：广播发送所述中继通知消息。
本发明实施例四的蓝牙末端节点，为图1所示的通信方法的实现装置，具体可参考图1的实施例一，此处不再赘述。
图7为本发明实施例五的蓝牙网关节点的结构示意图，如图7所示，本发明实施例 四的蓝牙网关节点50，包括：第一接收模块51、中继节点配置模块52和中继节点启动模块53。
第一接收模块51，用于接收请求配置中继消息；其中，所述请求配置中继消息包含：末端节点、中间节点、网关节点依次顺序设置的传播路径；
中继节点配置模块52，用于根据预设选择条件，从所述传播路径的所述中间节点中选择中继节点；
中继节点启动模块53，用于向所述中继节点发送开启中继请求；其中，所述开启中继请求包括：所述末端节点的地址信息。
进一步，本发明实施例五的蓝牙网关节点，所述预设选择条件包括：
选择长供电蓝牙节点；
选择与其他蓝牙节点相比，相对于请求蓝牙节点信号强度高的蓝牙节点；
选择与其他蓝牙节点相比，在线时间长的蓝牙节点；
选择与其他蓝牙节点相比，请求配置中继消息到达时间早的蓝牙节点。
进一步，本发明实施例五的蓝牙网关节点，还包括：第一更新模块54。
第一更新模块54，用于若发现所述末端节点的中继节点发生变更，向原中继节点发送子节点列表更新消息。
本发明实施例五的蓝牙网关节点，为图2所示的通信方法的实现装置，具体可参考图2的实施例二，此处不再赘述。
图8为本发明实施例六的蓝牙中继节点的结构示意图，如图8所示，提供一种蓝牙中继节点60，包括：第二接收模块61和中继功能模块62。
第二接收模块61，用于接收请求配置中继消息。
中继功能模块62，用于：
若开启中继功能，则在所述请求配置中继消息添加本地节点的地址信息，并广播发送所述请求配置中继消息；
若未开启中继功能，则仅针对未被转发过的请求配置中继消息添加本地节点的地址信息，并广播发送所述未被转发过的请求配置中继消息。
进一步，本发明实施例六的蓝牙中继节点，中继功能模块62还用于：
根据开启中继请求开启中继功能；其中，所述开启中继请求包括：末端节点的地址信息；
在本地节点列表记录所述末端节点；
向所述末端节点发送中继通知消息。
进一步，本发明实施例六的蓝牙中继节点，还包括：第二更新模块63。
第二更新模块63，用于若接收到子节点列表更新消息，根据所述子节点列表更新消息从本地节点列表中删除已变更的末端节点。
进一步，本发明实施例六的蓝牙中继节点，还包括：重置模块64。
重置模块64，用于若连接网络失败，关闭中继功能，向相邻蓝牙节点广播发送请求配置中继消息。
本发明实施例六的蓝牙中继节点，为图3所示的通信方法的实现装置，具体可参考图3的实施例三，此处不再赘述。
图9为本发明实施例七的蓝牙通信网络系统的结构示意图，如图9所示，本发明实施例七的蓝牙通信网络系统，包括：图6所示的蓝牙末端节点40、图7所示的蓝牙网关节点50和图8所示的蓝牙中继节点60。
本发明实施例七的蓝牙通信网络系统，采用图6所示的蓝牙末端节点40、图7所示的蓝牙网关节点50和图8所示的蓝牙中继节点60，具体可参考图3的实施例五、六、七，此处不再赘述。
根据本发明实施例，提供一种存储设备，所述存储设备存储计算机程序指令，所述计算机程序指令根据本发明所述的方法进行执行。
在本发明一个典型的配置中，存储设备包括永久性和非永久性、可移动和非可移动媒体，可以由任何方法或技术来实现信息存储。信息可以是计算机可读指令、数据结构、程序的装置或其他数据。计算机的存储介质的例子包括，但不限于相变内存(PRAM)、静态随机存取存储器(SRAM)、动态随机存取存储器(DRAM)、其他类型的随机存取存储器(RAM)、只读存储器(ROM)、电可擦除可编程只读存储器(EEPROM)、快闪记忆体或其他内存技术、只读光盘(CD-ROM)、数字多功能光盘(DVD)或其他光学存储、磁盒式磁带，磁带磁盘存储或其他磁性存储设备或任何其他非传输介质，可用于存储可以被计算设备访问的信息。
根据本发明实施例，提供一种计算设备，包括：用于存储计算机程序指令的存储器和用于执行计算机程序指令的处理器，其中，当该计算机程序指令被该处理器执行时，触发所述计算设备执行本发明所述的方法。
在本发明一个典型的配置中，计算设备均包括一个或多个处理器(CPU)、输入/输出接口、网络接口和内存。
内存可能包括计算机可读介质中的非永久性存储器，随机存取存储器(RAM)和/或非易失性内存等形式，如只读存储器(ROM)或闪存(flash RAM)。内存是计算机可读介质的示例。
本发明所指计算设备包括但不限于任何一种可与用户进行人机交互(例如通过触摸板进行人机交互)的电子产品，例如智能手机、平板电脑等移动电子产品，所述移动电子产品可以采用任意操作系统，如android操作系统、iOS操作系统等。
需要注意的是，本发明可在软件和/或软件与硬件的组合体中被实施，例如，可采用专用集成电路(ASIC)、通用目的计算机或任何其他类似硬件设备来实现。在一些实施例中，本发明的软件程序可以通过处理器执行以实现上文步骤或功能。同样地，本发明的软件程序(包括相关的数据结构)可以被存储到计算机可读记录介质中，例如，RAM存储器，磁或光驱动器或软磁盘及类似设备。另外，本发明的一些步骤或功能可采用硬件来实现，例如，作为与处理器配合从而执行各个步骤或功能的电路。
对于本领域技术人员而言，显然本发明不限于上述示范性实施例的细节，而且在不背离本发明的精神或基本特征的情况下，能够以其他的具体形式实现本发明。因此，无论从哪一点来看，均应将实施例看作是示范性的，而且是非限制性的，本发明的范围由所附权利要求而不是上述说明限定，因此旨在将落在权利要求的等同要件的含义和范围内的所有变化涵括在本发明内。不应将权利要求中的任何附图标记视为限制所涉及的权利要求。此外，显然“包括”一词不排除其他单元或步骤，单数不排除复数。装置权利要求中陈述的多个单元或装置也可以由一个单元或装置通过软件或者硬件来实现。第一，第二等词语用来表示名称，而并不表示任何特定的顺序。

Claims (23)

  1. 一种基于蓝牙网络的通信方法，其特征在于，包括：
    若相邻蓝牙节点中具有中继节点，则通过所述中继节点进行数据通信；
    若所述相邻蓝牙节点中不具有中继节点，则广播发送请求配置中继消息，以请求网关节点从所述相邻蓝牙节点中选择配置中继节点。
  2. 根据权利要求1所述的通信方法，其特征在于，还包括：
    若接收到所述相邻蓝牙节点发送的中继通知消息，则将该相邻蓝牙节点记录为中继节点。
  3. 根据权利要求2所述的通信方法，其特征在于，还包括：
    广播发送所述中继通知消息。
  4. 一种基于蓝牙网络的通信方法，其特征在于，包括：
    接收请求配置中继消息；其中，所述请求配置中继消息包含：末端节点、中间节点、网关节点依次顺序设置的传播路径；
    根据预设选择条件，从所述传播路径的所述中间节点中选择中继节点；
    向所述中继节点发送开启中继请求；其中，所述开启中继请求包括：所述末端节点的地址信息。
  5. 根据权利要求4所述的通信方法，其特征在于，所述预设选择条件包括：
    选择长供电蓝牙节点；
    选择与其他蓝牙节点相比，相对于请求蓝牙节点信号强度高的蓝牙节点；
    选择与其他蓝牙节点相比，在线时间长的蓝牙节点；
    选择与其他蓝牙节点相比，请求配置中继消息到达时间早的蓝牙节点。
  6. 根据权利要求4所述的通信方法，其特征在于，还包括：
    若发现所述末端节点的中继节点发生变更，向原中继节点发送子节点列表更新消息。
  7. 一种基于蓝牙网络的通信方法，其特征在于，包括：
    接收请求配置中继消息；
    若开启中继功能，则在所述请求配置中继消息添加本地节点的地址信息，并广播发送所述请求配置中继消息；
    若未开启中继功能，则仅针对未被转发过的请求配置中继消息添加本地节点的地址信息，并广播发送所述未被转发过的请求配置中继消息。
  8. 根据权利要求7所述的通信方法，其特征在于，还包括：
    根据开启中继请求开启中继功能；其中，所述开启中继请求包括：末端节点的地址信息；
    在本地节点列表记录所述末端节点；
    向所述末端节点发送中继通知消息。
  9. 根据权利要求8所述的通信方法，其特征在于，还包括：
    若接收到子节点列表更新消息，根据所述子节点列表更新消息从本地节点列表中删除已变更的末端节点。
  10. 根据权利要求8所述的通信方法，其特征在于，还包括：
    若连接网络失败，关闭中继功能，向相邻蓝牙节点广播发送请求配置中继消息。
  11. 一种蓝牙末端节点，其特征在于，包括：
    通信模块，用于若相邻蓝牙节点中具有中继节点，则通过所述中继节点进行数据通信；
    广播模块，用于若所述相邻蓝牙节点中不具有中继节点，则广播发送请求配置中继消息，以请求网关节点从所述相邻蓝牙节点中选择配置中继节点。
  12. 根据权利要求11所述的蓝牙末端节点，其特征在于，还包括：
    中继节点记录模块，用于若接收到相邻蓝牙节点发送的中继通知消息，则将该相邻蓝牙节点记录为中继节点。
  13. 根据权利要求12所述的蓝牙末端节点，其特征在于，所述广播模块还用于：广播发送所述中继通知消息。
  14. 一种蓝牙网关节点，其特征在于，包括：
    第一接收模块，用于接收请求配置中继消息；其中，所述请求配置中继消息包含：末端节点、中间节点、网关节点依次顺序设置的传播路径；
    中继节点配置模块，用于根据预设选择条件，从所述传播路径的所述中间节点中选择中继节点；
    中继节点启动模块，用于向所述中继节点发送开启中继请求；其中，所述开启中继请求包括：所述末端节点的地址信息。
  15. 根据权利要求14所述的蓝牙网关节点，其特征在于，所述预设选择条件包括：
    选择长供电蓝牙节点；
    选择与其他蓝牙节点相比，相对于请求蓝牙节点信号强度高的蓝牙节点；
    选择与其他蓝牙节点相比，在线时间长的蓝牙节点；
    选择与其他蓝牙节点相比，请求配置中继消息到达时间早的蓝牙节点。
  16. 根据权利要求14所述的蓝牙网关节点，其特征在于，还包括：
    第一更新模块，用于若发现所述末端节点的中继节点发生变更，向原中继节点发送子节点列表更新消息。
  17. 一种蓝牙中继节点，其特征在于，包括：
    第二接收模块，用于接收请求配置中继消息；
    中继功能模块，用于：
    若开启中继功能，则在所述请求配置中继消息添加本地节点的地址信息，并广播发送所述请求配置中继消息；
    若未开启中继功能，则仅针对未被转发过的请求配置中继消息添加本地节点的地址信息，并广播发送所述未被转发过的请求配置中继消息。
  18. 根据权利要求17所述的蓝牙中继节点，其特征在于，中继功能模块还用于：
    根据开启中继请求开启中继功能；其中，所述开启中继请求包括：末端节点的地址信息；
    在本地节点列表记录所述末端节点；
    向所述末端节点发送中继通知消息。
  19. 根据权利要求17所述的蓝牙中继节点，其特征在于，还包括：
    第二更新模块，用于若接收到子节点列表更新消息，根据所述子节点列表更新消息从本地节点列表中删除已变更的末端节点。
  20. 根据权利要求17所述的蓝牙中继节点，其特征在于，还包括：
    重置模块，用于若连接网络失败，关闭中继功能，向相邻蓝牙节点广播发送请求配置中继消息。
  21. 一种蓝牙通信网络系统，其特征在于，包括：权利要求11至13中任一项所述的蓝牙末端节点、权利要求14至16中任一项所述的蓝牙网关节点和权利要求17至20中任一项所述的蓝牙中继节点。
  22. 一种存储设备，其特征在于，所述存储设备存储计算机程序指令，所述计算机程序指令根据权利要求1至10中任一项所述的方法进行执行。
  23. 一种计算设备，其特征在于，包括：用于存储计算机程序指令的存储器和用于执行计算机程序指令的处理器，其中，当该计算机程序指令被该处理器执行时，触发所 述计算设备执行权利要求1至10中任一项所述的方法。
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