CN111935763B - Method for improving data transmission reliability in wireless mesh network and network system - Google Patents
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Abstract
The application discloses a method for improving data transmission reliability in a wireless Mesh network, wherein the Mesh of the wireless Mesh network comprises more than two Mesh access nodes MPP accessed to an external network, one MPP node is a first MPP management node, and the method comprises the following steps of: and receiving a switching command from the first MPP management node, wherein the switching command carries destination MPP node information to be switched, modifying the destination address of the received data stream with the destination address being the first MPP management node into a destination MPP node according to the destination MPP node information carried in the switching command, and transmitting the data stream based on the modified destination address. The application provides active switching and passive switching in the Mesh network with a plurality of outlets, and improves the reliability of data transmission.
Description
Technical Field
The application relates to the Mesh field of wireless Mesh networks, in particular to a method for improving data transmission reliability in a wireless Mesh network.
Background
Mesh networks, i.e. "wireless Mesh networks", are a type of "multi-hop" network that has evolved from ad-hoc networks. Each node in an ad-hoc network is mobile and can dynamically maintain connections with other nodes in any manner. In the process of network evolution, a wireless network is an indispensable technology, and a wireless Mesh can cooperatively communicate with other networks to form a dynamic network architecture which can be continuously expanded, and wireless interconnection can be kept between any two devices.
Referring to fig. 1, fig. 1 is a schematic diagram of a conventional Mesh networking. The network comprises Mesh entry nodes (MPP, mesh Portal Point), mesh nodes (MP, mesh Point) and Mesh access MAP nodes (MAP, mesh Access Point) supporting AP functions, wherein the MPP nodes are extensions of conventional APs (APs, wireless access nodes), one end of the MPP nodes is accessed to the APs in a wired or wireless mode so as to be connected to the Internet, and the MPP nodes are access points for connecting a wireless Mesh network and a non-Mesh network and are control nodes of the whole Mesh network; the MP node supports functions of automatic topology, automatic discovery of routes, forwarding of data packets and the like and is used for connecting the MPP node with the MAP node and each MP node in the Mesh network; the MAP node is for connection with a terminal (station).
In the existing Mesh network, the Mesh network is usually accessed to the external network through an MPP node, which results in that once the MPP node fails, the Mesh network where the MPP node is located cannot perform data transmission with the external network.
Disclosure of Invention
The application provides a method for improving the reliability of data transmission in a wireless Mesh network, which is used for improving the transmission reliability between a Mesh network and an external network.
The application provides a method for improving data transmission reliability in a wireless Mesh network, wherein the wireless Mesh network Mesh comprises more than two Mesh access nodes MPP accessed to an external network, one MPP node is a first MPP management node,
any Mesh access node MAP supporting AP functions:
receiving a switch command from a first MPP management node, the switch command carrying destination MPP node information to be switched,
according to the destination MPP node information carried in the switching command, the destination address of the received data stream with the destination address being the first MPP management node is modified to be the destination MPP node,
based on the modified destination address, the data stream is transmitted.
Preferably, the method further comprises the steps of,
any MPP node:
a switch command is received from a first MPP management node,
judging whether the MPP node is a target MPP node or not according to the target MPP node information carried in the switching command, if so, using the MPP node as a second MPP management node, and if not, sending the node information of the node to the target MPP node.
Preferably, the method further comprises the steps of,
and triggering the terminal to reconnect when the MAP node detects that the terminal accessed to the MAP node has no data stream transmission within the set time threshold.
Each MAP node and each MPP node send heartbeat messages to a second MPP management node at regular time;
preferably, the MPP node comprises, as a second MPP management node,
starting its own DHCP server function, becoming a second MPP management node,
receiving private messages from each MPP node, wherein the private messages carry node information of the private messages;
and sending the node information of all MPP nodes in the network to all MAP nodes and MPP nodes.
Preferably, said triggering the terminal to make a reconnection includes,
the MAP node kicks the terminal out of the network, so that after the terminal is reconnected to the network, the IP address and the MPP node address are acquired from the second MPP management node;
the node information comprises an IP address, an MAC address and a network index;
the switching command is triggered by the first MPP management node according to the network index, and after the switching command is sent, the first MPP management node closes the function of the self Dynamic Host Configuration Protocol (DHCP) server;
the destination MPP node is determined by the first MPP management node selecting the MPP with the best network index from the network indexes of the MPP nodes.
Preferably, the transmitting node information of all MPP nodes in the network to all MAP nodes and MPP nodes further comprises,
sequencing according to network indexes in the MPP node information, sending the MPP node information and sequencing results to all MPP nodes and MAP nodes,
preferably, the method further comprises the steps of,
when any MPP node accesses the Mesh network, sending DHCP probe,
judging whether a DHCP server exists in the Mesh network,
if so, the node information of the MPP node is sent to the current management node through a private message, so that the current management node sorts the MPP node information according to the network index in each MPP node information, and sends each MPP node information and the sorting result to all MPP nodes and MAP nodes,
otherwise, the MPP node starts the DHCP server function and becomes the first MPP management node, IP addresses are allocated to all access points MP, MAP nodes and terminals in the network, and MPP nodes are allocated to the terminals.
Preferably, the method further comprises the steps of,
when any MPP node and/or MAP node detects that the heartbeat is not communicated with the first MPP management node, the node selects the MPP with the best network index as a target MPP node.
The application provides a wireless Mesh network system, which comprises more than two Mesh access nodes MPP accessed to an external network, wherein one MPP node is a first MPP management node;
said any MPP node receiving said switch command from a first MPP management node,
and according to the destination MPP node information carried in the switching command, modifying the destination address of the received data stream with the destination address being the first MPP management node into the destination MPP node.
Based on the modified destination address, the data stream is transmitted.
Preferably, any one of the MPP nodes,
receiving a switch command from a first MPP management node, the switch command carrying destination MPP node information to be switched,
judging whether the MPP node is a target MPP node or not, if so, using the MPP node as a second MPP management node, and if not, sending node information of the node to the target MPP node.
In the Mesh network comprising more than two MPP nodes, any MAP node modifies the destination address of the received data stream with the destination address being the first MPP management node into the destination MPP node according to the destination MPP node information carried in the switching command from the first MPP management node, and transmits the data stream based on the modified destination address. According to the application, when the data stream is transmitted, the MPP node with the optimal network index can be selected in real time to transmit the data stream, and further, once the current management node is found to have a fault, the MPP node with the optimal network index can be switched to transmit the data stream, so that the data transmission by only one MPP node in the existing Mesh network is avoided, and the reliability of the data transmission is improved.
Drawings
Fig. 1 is a schematic diagram of a conventional Mesh networking.
Fig. 2 is a schematic networking diagram of three MPP nodes configured in the Mesh network according to the present application.
Fig. 3 is a schematic flow chart of access of an MPP node to a Mesh network.
Fig. 4 is a schematic flow chart of active switching of the MPP management node.
Fig. 5 is a schematic diagram of MPP node switching performed in the embodiment 1 based on the networking of fig. 2.
Fig. 6 is a schematic flow chart of passive switching of the MPP management node.
Fig. 7 is a schematic diagram of MPP node switching based on the networking of fig. 2 in this embodiment 2.
FIG. 8 is a schematic diagram of an MPP node with gateway capability
Fig. 9 is a schematic diagram of a MAP node.
Detailed Description
The present application will be described in further detail with reference to the accompanying drawings, in order to make the objects, technical means and advantages of the present application more apparent.
In the Mesh network, at least more than two MPP nodes with gateway capability are configured, so that the Mesh network is provided with a plurality of outlets to be connected with an external network, and once any MPP node fails, data stream transmission on the MPP node is switched to other non-failure MPP nodes in the Mesh network.
Referring to fig. 2, fig. 2 is a schematic networking diagram of three MPP nodes configured in the Mesh network according to the present application. Three MPP nodes are configured in the Mesh network, each MPP node is connected with at least one MP, in the figure, each MP node is connected in turn, and each MAP is connected with one MP node.
Among the plurality of MPP nodes, one MPP node may be designated as a management node by configuration. When a plurality of MPP nodes in the Mesh network are online, each MPP node sends a private message to a management node of the Mesh network to inform the management node of the Mesh network of the MAC address and the IP address, and thus, the management node acquires information of all MPP nodes in the Mesh network.
Referring to fig. 3, fig. 3 is a schematic flow chart of the MPP node accessing the Mesh network. After an MPP node with gateway capability is accessed to a Mesh network, sending Dynamic Host Configuration Protocol (DHCP) detection to detect whether a DHCP server exists in the Mesh network, namely detecting whether the MPP node has started a DHCP server function;
if no DHCP server exists, the MPP node starts the function of the DHCP server, so as to distribute IP addresses to MP nodes, MAP nodes and terminals accessing the network of the whole network, and distributes MPP nodes to the terminals, wherein the MPP nodes automatically become management nodes of the MESH network.
If there is a DHCP server in the network, it indicates that there is no management node in the network at this time, the MPP node does not start its DHCP server function, and at least sends its own IP and MAC to the MPP management node through a private message, preferably, network index information such as an external network bandwidth and an external network condition can also be sent to the management node through a private message, preferably, when there is a change in the network index information of the following itself, the management node is also notified through a private message, for example, an external network interrupt or an external network state worsening, so that the management node will know the information of all MPP nodes in the whole network.
The MPP management node receives private messages sent by each MPP node in the network, sorts the private messages according to network indexes such as the external network bandwidth of each MPP node and/or the network condition, and sends MPP node information and MPP node sorting results of the whole network to other MPP nodes and MAP nodes in the network.
And sending heartbeat messages to the MPP management node at regular time by the MPP node and the MAP node in the network so that the MPP node and the MAP node can know whether the MPP management node is on line or not.
Among the plurality of MPP nodes, an MPP node may also be selected as a management node by autonomous election. For example, when a plurality of MPP nodes in a Mesh network are online, each MPP node sends a private message to all nodes in the Mesh network to inform the MAC address and the IP address of the MPP node and network index information, and for each MPP node, the MPP node ranks the received MPP nodes according to the network index information so as to determine whether the network index information of the MPP node is the best, so that one MPP node with the best network index information is autonomously selected as a management node.
The following describes a method for performing a handover when there are multiple MPP nodes in the network.
Example 1
In this embodiment, the MPP management node initiates the handover, that is, the MPP management node discovers that its own network index is deteriorated or that there is an MPP node with better network index, and triggers the handover to the destination MPP node, for example, the MPP management node abnormally interrupts its external network or discovers that there is an MPP node with better bandwidth and network condition in the network, and then switches to the destination MPP node with better external network condition. The above-described handover may be understood as an active handover. For convenience of description, the MPP management node initiating the handover is referred to as a first MPP management node, and the MPP management node as which the target MPP node is located is referred to as a second MPP management node.
Referring to fig. 4, fig. 4 is a schematic flow chart of active switching of the MPP management node according to the present embodiment. The method of handover may include the steps of,
in step 401, the first MPP management node sends private messages to other MPP nodes and all MAP nodes in the network to notify the data stream to switch to the designated destination MPP, that is, send a switching command. And shuts down its own DHCP server function.
After each MPP receives the switch command, step 402, it is determined whether the destination MPP node is itself,
if the destination MPP node to be switched is the own node, starting the DHCP server function, automatically becoming a second MPP management node,
if the MPP node is not the node, a private message is sent to the destination node to inform the IP, MAC address and network index of the node, so that the destination MPP node as a second MPP management node can know the conditions of all MPP nodes of the whole network, and meanwhile, the second MPP management node can send each MPP message and network index sequence to all other MPP nodes and MAP nodes in the network.
Step 403, after receiving the switching command, the map node determines whether the destination address carried by the current data stream is the address of the first MPP management node, if so, modifies the destination MAC address of the data stream into the MAC address of the second MPP management node, determines a forwarding path using the address of the MPP node as the destination address through MP node route discovery calculation, and sends the data stream to the second MPP management node so as to enable the data stream to exit from the second MPP management node, thus, for the data stream which is accessed before switching and has the destination address of the first MPP management node, it is ensured that the data stream sent to the external network after switching is not interrupted.
And when the MAP node detects that the terminal has no data stream to be transmitted within the set time threshold, the terminal is kicked out of the current Mesh network to trigger the terminal to be reconnected to the network.
And after the terminal is reconnected to the network, the IP address and the MPP node are acquired from the second MPP management node, so that the data stream is transmitted through the second MPP management node.
If the destination address carried by the data stream is not the address of the first MPP management node, no modification of the destination address of the data stream is performed.
In step 404, each MPP node and MAP may send heartbeat messages to the second MPP management node at regular time to detect whether the second MPP management node is online.
Referring to fig. 5, fig. 5 is a schematic diagram illustrating MPP node switching based on the networking of fig. 2 according to the present embodiment. In the figure, three MPP1 nodes, MPP2 nodes and MPP3 nodes with gateway capability, network indexes of the MPP nodes are shown in the figure, MPP1 is a management node, the management node sorts other MPP nodes in the network according to the network indexes, and the management node MPP1 sends information of the nodes and sorting results to the MPP2 nodes, the MPP3 nodes, the MAP1 nodes, the MAP2 nodes and the MAP3 nodes.
When the external network communication of the MPP1 node is abnormal, the MPP1 node starts to perform active switching, the MPP1 selects MPP3 as a second MPP management node, the MPP1 informs the MPP2, the MPP3, the MAP1, the MAP2 and the MAP3 nodes through private messages, the switching to the target MPP3 node is notified, and a self DHCP server is closed, and black thick lines are shown as notification switching commands.
The MPP node and the MAP node in the network receive the switching command and process the following steps:
MPP2 node: sending a private message to a second MPP management node MPP3, informing the network index of the private message, and simultaneously sending a heartbeat message to the MPP3 node at regular time;
MPP3: starting a DHCP server function, receiving private messages sent by other MPPs, sequencing all MPPs in a network according to network indexes, and sending sequencing results and address information to an MPP2 node and MAP 1-MAP 3 nodes;
MAP1: for the data stream sent to the external network by the terminal STA1, if the destination MAC address of the data stream is the MAC address of the MAP1 node, modifying the destination MAC of the data stream to be the MAC address of the MPP3 node, sending a message to the MP node connected with the MPP1 node, carrying out route discovery calculation by the MP node, forwarding the data stream to the MPP3 node, and sending the data stream to the external network from the MPP3 node. If it is checked that the terminal STA1 has no data stream transmission within the time threshold, the terminal STA1 is kicked off. The gateway to which the terminal STA1 is allocated after re-interfacing is MPP3, so that the data stream is directly sent from MPP3 without the MAP1 modifying the destination MAC address. While MAP1 starts sending heart beats to MPP3 at regular time.
The actions of MAP2 and MAP3 are similar to MAP 1.
According to the method and the device, the MPP management node actively initiates the switching, so that the Mesh network can always select the MPP node with the best network index in real time to transmit the data stream, the reliability of data transmission is improved, and the data transmission efficiency is improved.
Example 2
In this embodiment, the switching triggered automatically after the MPP management node is disconnected, that is, when the MPP management node in the network is disconnected from the network due to an abnormality (for example, device power failure), the switching is triggered passively.
Referring to fig. 6, fig. 6 is a schematic flow chart of passive switching of the MPP management node according to the present embodiment. Before switching, the first MPP management node sends information of each node and a sequencing result to all MPP nodes and MAP nodes. The method of handover may include the steps of,
in step 601, when the MPP node and the MPP nodes except the management node find out that the heartbeat with the MPP management node is not feasible, the MPP node and the MAP select one MPP with the best network index as a target MPP node according to the network index sequencing result,
at step 602, each MPP determines whether the destination MPP node is itself,
if the MPP finds that the selected node is itself, the DHCP server function is started, and becomes the second MPP management node,
if the MPP management node is not the node, sending a private message to the second MPP management node selected in the step 601 to inform the IP, MAC and network indexes of the node, so that the second MPP management node knows all MPP conditions of the whole network;
step 603, the second MPP management node ranks all MPP nodes according to the network index, sends each MPP node information and ranking result to all other MPPs and MAPs in the network,
in step 604, the map node determines whether the destination address carried by the current data stream is the address of the first MPP management node,
if so, modifying the destination MAC address of the data stream into the MAC address of a second MPP management node, determining a forwarding path taking the MPP node address as the destination address through MP node route discovery calculation, and transmitting the data stream to the second MPP management node so that the data stream goes out of the second MPP management node, thus ensuring that the data stream which is transmitted to an external network after switching is not interrupted for the data stream which is accessed to a terminal before switching and has the destination address of the first MPP management node;
and when the MAP node detects that the terminal has no data stream to be transmitted within the set time threshold, the terminal is kicked out of the current Mesh network to trigger the terminal to be reconnected to the network.
And after the terminal is reconnected to the network, the IP address and the MPP node are acquired from the second MPP management node, so that the data stream is transmitted through the second MPP management node.
If the destination address carried by the data stream is not the address of the first MPP management node, no modification of the destination address of the data stream is performed.
Step 604 is a process performed on a different node, out of order from steps 602, 603.
In step 605, each MPP and MAP time sends a heartbeat to the second MPP management node to detect whether the management node is online.
Referring to fig. 7, fig. 7 is a schematic diagram illustrating MPP node switching based on the networking of fig. 2 in this embodiment. In the figure, three MPP1 nodes, MPP2 nodes and MPP3 nodes with gateway capability, network indexes of the MPP nodes are shown in the figure, MPP1 is a management node, the management node sorts other MPP nodes in the network according to the network indexes, and the management node MPP1 sends information of the nodes and sorting results to the MPP2 nodes, the MPP3 nodes, the MAP1 nodes, the MAP2 nodes and the MAP3 nodes.
When the management node MPP1 is abnormally down, the MPP2, the MPP3, the MAP1, the MAP2 and the MAP3 are not communicated with the heartbeat of the management node MPP1, and each MPP node and each MAP node carry out the following processing:
MPP2 node: and selecting an MPP3 node from MPP node information and sequencing sent before the MPP1 management node is down as a target MPP node and simultaneously as a second MMP management node. The MPP2 node sends the network index of the MPP2 node to the MPP3, and simultaneously sends heartbeat messages to the MPP3 at regular time;
MPP3: in the MPP node information and the sorting sent before the MPP1 management node is down, the MPP3 node also selects the MPP3 node as a target node, discovers itself, then starts a DHCP server function, receives private messages sent by other MPPs, sorts the MPP nodes in the network, and sends the MPP nodes to the MPP2 and the MAP 1-MAP 3 (as black solid lines in the figure).
MAP1: selecting an MPP3 node from MPP node information and sequencing sent before downtime of an MPP1 management node as a target node; for the data stream sent to the external network by the terminal STA1, if the destination MAC address of the data stream is the MAC address of the MAP1 node, modifying the destination MAC of the data stream to be the MAC address of the MPP3 node, sending a message to the MP node connected with the MPP1 node, carrying out route discovery calculation by the MP node, forwarding the data stream to the MPP3 node, and sending the data stream to the external network from the MPP3 node. If it is checked that the terminal STA1 has no data stream transmission within the time threshold, the terminal STA1 is kicked off. The gateway to which the terminal STA1 is allocated after re-interfacing is MPP3, so that the data stream is directly sent from MPP3 without the MAP1 modifying the destination MAC address. While MAP1 starts sending heart beats to MPP3 at regular time.
The actions of MAP2 and MAP3 are similar to MAP 1.
In the embodiment, when the first MPP management node is detected to be abnormal by other MPP nodes and MAP nodes, the other MPP nodes and MAP nodes autonomously select the MPP node with the best network index as the destination node of the switching, so that interruption of data stream transmission caused by the abnormality of the first MPP management node is avoided, and the robustness and reliability of the data stream transmission are improved.
Referring to fig. 8, fig. 8 is a schematic diagram of an MPP node with gateway capability. The MPP node may comprise a processor configured to,
the switching module is used for triggering switching according to network indexes or abnormal heartbeat messages of all MPP nodes in the current Mesh network, and taking the MPP node with the optimal network index as a switching destination MPP node;
the gateway module judges whether the target MPP node is itself, and when the target MPP node is itself, the gateway module starts a dynamic host configuration protocol server function to serve as a management node, receives private messages from other MPP nodes with gateway capability, obtains address information of the other MPP nodes, and sends the information of each MPP node to all MPP nodes and MAP nodes; when the destination MPP node is not the destination MPP node itself, sending a private message to the destination MPP node, wherein the message carries node information of the destination MPP node and network indexes, sending a heartbeat message to the destination MPP node at regular time,
and the forwarding module is used for receiving the data stream with the MPP node as a destination address and transmitting the data stream in the Mesh network and the external network.
As another embodiment, the MPP node includes a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the computer program to implement the traffic load sharing methods of embodiments 1-4 of the present application.
The Memory may include random access Memory (Random Access Memory, RAM) or may include Non-Volatile Memory (NVM), such as at least one disk Memory. Optionally, the memory may also be at least one memory device located remotely from the aforementioned processor.
The processor may be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU), a network processor (Network Processor, NP), etc.; but also digital signal processors (Digital Signal Processing, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.
Referring to fig. 9, fig. 9 is a schematic diagram of a MAP node. The MAP node may comprise a MAP node that,
a switching module for receiving a switching command, modifying the data stream to a destination MPP address by taking the source MPP node (the first MPP management node) as the destination address according to the destination MPP address in the switching command,
the access control module triggers the terminal to reconnect when no data stream from the terminal is transmitted within the set time threshold,
and the receiving and transmitting module is used for transmitting the data stream from the terminal to the connected MP node according to the destination address of the data stream and sending the heartbeat message to the management node at regular time.
The switching module further comprises an MPP node with the optimal network index as a target MPP node for switching when the heartbeat with the MPP management node is not communicated.
The embodiment of the application also provides a computer readable storage medium, wherein a computer program is stored in the storage medium, and the computer program realizes the method steps for improving the reliability of data transmission in the embodiment when being executed by a processor.
For the apparatus/network side device/storage medium embodiment, since it is substantially similar to the method embodiment, the description is relatively simple, and the relevant points are referred to in the description of the method embodiment.
In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather to enable any modification, equivalent replacement, improvement or the like to be made within the spirit and principles of the application.
Claims (10)
1. A method for improving data transmission reliability in a wireless Mesh network is characterized in that the wireless Mesh network Mesh comprises more than two Mesh access nodes MPP accessed to an external network, wherein one MPP node is a first MPP management node,
any Mesh access node MAP supporting AP functions:
receiving a switch command from a first MPP management node, the switch command carrying destination MPP node information to be switched,
according to the destination MPP node information carried in the switching command, the destination address of the received data stream with the destination address being the first MPP management node is modified to be the destination MPP node,
based on the modified destination address, the data stream is transmitted.
2. The method of claim 1, further comprising,
any MPP node:
a switch command is received from a first MPP management node,
judging whether the MPP node is a target MPP node or not according to the target MPP node information carried in the switching command, if so, using the MPP node as a second MPP management node, and if not, sending the node information of the node to the target MPP node.
3. The method of claim 1, further comprising,
when the MAP node detects that the terminal accessed to the MAP node does not have data stream transmission within a set time threshold, triggering the terminal to reconnect;
each MAP node and each MPP node periodically sends heartbeat messages to the second MPP management node.
4. The method as set forth in claim 2, wherein the MPP node comprises, as a second MPP management node,
starting its own DHCP server function, becoming a second MPP management node,
receiving private messages from each MPP node, wherein the private messages carry node information of the private messages;
and sending the node information of all MPP nodes in the network to all MAP nodes and MPP nodes.
5. The method of claim 3, wherein triggering the terminal to reconnect comprises,
the MAP node kicks the terminal out of the network, so that after the terminal is reconnected to the network, the IP address and the MPP node address are acquired from the second MPP management node;
the node information comprises an IP address, an MAC address and a network index;
the switching command is triggered by the first MPP management node according to the network index, and after the switching command is sent, the first MPP management node closes the function of the self Dynamic Host Configuration Protocol (DHCP) server;
the destination MPP node is determined by the first MPP management node selecting the MPP with the best network index from the network indexes of the MPP nodes.
6. The method of claim 4, wherein transmitting node information for all MPP nodes in the network to all MAP nodes and MPP nodes further comprises,
and sequencing according to the network indexes in the MPP node information, and sending the MPP node information and sequencing results to all MPP nodes and MAP nodes.
7. The method of claim 5, further comprising,
when any MPP node accesses the Mesh network, sending DHCP probe,
judging whether a DHCP server exists in the Mesh network,
if so, the node information of the MPP node is sent to the current management node through a private message, so that the current management node sorts the MPP node information according to the network index in each MPP node information, and sends each MPP node information and the sorting result to all MPP nodes and MAP nodes,
otherwise, the MPP node starts the DHCP server function and becomes the first MPP management node, IP addresses are allocated to all access points MP, MAP nodes and terminals in the network, and MPP nodes are allocated to the terminals.
8. The method of claim 6 or 7, further comprising,
when any MPP node and/or MAP node detects that the heartbeat is not communicated with the first MPP management node, the node selects the MPP node with the best network index as a target MPP node.
9. The wireless Mesh network system is characterized by comprising more than two Mesh access nodes MPP accessed to an external network, wherein one MPP node is a first MPP management node;
the MPP node receives a switching command from a first MPP management node,
according to the destination MPP node information carried in the switching command, the destination address of the received data stream with the destination address being the first MPP management node is modified to be the destination MPP node,
based on the modified destination address, the data stream is transmitted.
10. The system of claim 9, wherein any one of the MPP nodes,
receiving a switch command from a first MPP management node, the switch command carrying destination MPP node information to be switched,
judging whether the MPP node is a target MPP node or not, if so, using the MPP node as a second MPP management node, and if not, sending node information of the node to the target MPP node.
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| CN113037652B (en) * | 2021-03-24 | 2022-04-12 | 深圳市乙辰科技股份有限公司 | Network connection method and device based on distributed networking system and computer equipment |
| CN117014915A (en) * | 2022-04-29 | 2023-11-07 | 青岛海尔科技有限公司 | method, device and equipment for interrupting and reconnecting nodes in mesh network |
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