Multichannel wireless mesh network channel distribution method

A channel allocation and multi-channel technology, which is applied in the field of multi-channel wireless mesh network channel allocation, can solve the problems of large network interference and poor network performance, and achieve the effects of reducing interference, improving throughput, and solving balance problems

Active Publication Date: 2012-02-15
ZHEJIANG UNIV OF TECH
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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

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  • Multichannel wireless mesh network channel distribution method
  • Multichannel wireless mesh network channel distribution method
  • Multichannel wireless mesh network channel distribution method

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Embodiment Construction

[0034] The present invention will be described in further detail below according to accompanying drawing:

[0035] refer to Figure 1 to Figure 5 , a multi-channel wireless mesh network channel allocation method, the channel allocation method comprises the following steps:

[0036] 1) Based on the link weight interference estimation strategy, the channel is allocated for the fixed interface, and the process is as follows:

[0037] 1.1) assign weights for links according to probability, and set up a weighted bidirectional network connection graph. The link weight calculation method is as follows: w l i , j r = 1 m i - - - ( 1 )

[0038] in, Indicates the forward link of node i, m i Indica...

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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...

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Application Information

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IPC IPC(8): H04W16/06H04L12/56H04L47/76
Inventor 王万良姚信威张蛟陶砾岑跃峰赵燕伟
Owner ZHEJIANG UNIV OF TECH
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