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Method of switching root node in mesh network

A root node, internal switching technology, applied in electrical components, wireless communication and other directions, can solve the problems of poor signal strength, affecting the transmission success rate, etc., to achieve the effect of ensuring the success rate

Inactive Publication Date: 2018-08-03
ESPRESSIF SYST SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the signal strength between the root node and the router becomes poor, it will affect the success rate of the transmission

Method used

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  • Method of switching root node in mesh network
  • Method of switching root node in mesh network
  • Method of switching root node in mesh network

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Embodiment Construction

[0019] based on the following Figure 1 to Figure 4 , specifically explain the preferred embodiment of the present invention.

[0020] In the mesh network, the signal strength between the root node and the router is related to the success rate of transmission. If the physical location between the router and the root node changes, the distance becomes larger, or the connection between the root node and the router occurs. If a fault occurs, the quality of communication between the root node and the router will deteriorate, and the signal strength will decrease, thereby affecting signal transmission. If the communication quality between the current root node and the router deteriorates or there is a device that is more suitable for the root node in the mesh network, the root node can be switched to maintain a high signal transmission success rate.

[0021] In view of this, if figure 2 As shown, the present invention provides a method for switching root nodes in a mesh network,...

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Abstract

The invention relates to a method of switching a root node in a mesh network. A current root node broadcasts a root node switch request in real time in the mesh network, all devices in the mesh network receive the root node switch request and then send signal strength values between the devices and a router to the current root node, the current root node compares all received signal strength values and selects a device with largest signal strength value as a candidate of the root node, the current root node ends a current connection to the router, and the candidate connects the router activelyto become the root node. The method causes minimum damage to existing mesh network connection, ensures that the new root node is the device in the mesh network, the signal strength between which andthe router is highest, and effectively guarantees success of signal transmission.

Description

technical field [0001] The invention relates to a method for switching root nodes in a mesh network. Background technique [0002] Wireless Mesh Network Wireless mesh network, also known as "multi-hop multi-hop" network, is a new wireless network technology completely different from traditional wireless networks. [0003] In a traditional wireless local area network (WLAN), each client accesses network users through a wireless link connected to an access point (AP). If they want to communicate with each other, they must first visit a fixed access point. This network structure is called a single-hop network. In a wireless Mesh network, any wireless device node can act as an AP and a router at the same time, each node in the network can send and receive signals, and each node can communicate directly with one or more peer nodes. The biggest advantage of this structure is that if the nearest AP is congested due to excessive traffic, then the data can be automatically rerouted...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/12H04W36/30
CPCH04W36/12H04W36/30
Inventor 齐曰霞姜江建
Owner ESPRESSIF SYST SHANGHAI