Multichannel wireless mesh network channel distribution method

Abstract

The invention provides a multichannel wireless mesh network channel distribution method which comprises the following steps: (1) according to a probability model, establishing a bidirectional network connection graph with weight, calculating a link interference degree and a node interference degree of a node in order according to link weight, and selecting a channel with a minimal node interference degree in an available channel set as a channel of a node fixed interface according to the node interference degree; (2) establishing a communication period, dividing the period into a broadcast time slot and a common data time slot, sending and receiving a broadcast message in the broadcast time slot, sending a common data packet in the common data time slot, and dividing the common data time slot into data sub time slots, wherein different sub time slots can use different channels to communicate with different nodes. According to the invention, a plurality of nonoverlap channels are fully utilized, network interference is effectively reduced, and network performances such as a network throughput, an end-to-end time delay and the like are raised.

Description

technical field [0001] The invention designs a wireless mesh network channel allocation technology, especially a wireless mesh network configured with a plurality of radio frequency terminals adopting a mixed channel allocation technology. Background technique [0002] Wireless mesh network has become a very promising new wireless networking technology emerging in the next-generation wireless network. It is widely used in home broadband network, residential and metropolitan area network, collaborative network management, and intelligent transmission system. Compared with the traditional wireless network, the wireless mesh network is a dynamic self-organizing and self-configurable multi-hop wireless network, which can be integrated with various existing wireless networks through the wireless mesh gateway, such as wireless sensor networks, Wi-Fi and WiMAX, etc., enable end users to use multiple wireless networks at the same time, which can effectively reduce laying costs, simp...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the disadvantages of large network interference and poor network performance in the existing multi-channel wireless mesh network channel allocation technology, the present invention proposes a mixed channel allocation method for multi-channel wireless mesh networks to make full use of the multiple channels provided by IEEE non-overlapping channels, reducing interference between nodes and improving network performance such as throughput

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