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Channel allocation method in wireless mesh network

A channel allocation and allocation method technology, which is applied in the field of communication, can solve problems such as cluster head network bottlenecks, and achieve the effects of meeting communication needs, improving fairness, and increasing spectrum resource utilization

Inactive Publication Date: 2009-10-28
CHONGQING UNIV
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Problems solved by technology

Although this layered structure simplifies network control, it also makes the cluster head a network bottleneck.

Method used

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  • Channel allocation method in wireless mesh network
  • Channel allocation method in wireless mesh network
  • Channel allocation method in wireless mesh network

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Embodiment Construction

[0025] The following describes the present invention in further detail based on the drawings and embodiments:

[0026] The basic idea of ​​the present invention is as follows: Combining the networking requirements of a virtual hierarchical Mesh network, a channel allocation scheme in a wireless mesh network is proposed. In the scheme, a new generalized set T-coloring coloring model is used as the channel allocation rule, and radio frequency is used in the rule. Defense and cell service strength are used as improvement indicators for channel allocation to maintain network connectivity and effectively increase network capacity under acceptable network interference.

[0027] figure 2 It is the cell structure division and node coverage diagram in the virtual hierarchical Mesh network of the present invention. After the cell division, each cell contains a certain number of nodes, and the cells have the same radius R. In order to cover the entire plane area without leaving gaps, betwe...

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Abstract

The invention provides a channel allocation method in wireless mesh network, which uses the radio frequency protection ratio and district traffic intensity as the channel allocation indicator to realize the co-channel multiplexing in a virtual layered Mesh network structure. The channel allocation scheme performs the channel allocating using the district as unit and an extended set T-coloring coloring module is used. The radio frequency protection ratio is used as the indicator of the channel allocation and the channel is multiplexed when the carrier interference is larger than the radio frequency protection ratio. The district diameter is controlled in district separation way when the district traffic intensity is not uniform. The invention provides a wireless channel allocation method for the virtual layered Mesh network structure, therefore the utilization ratio of the wireless frequency spectrum resource is increased and the wireless interference between the districts is reduced.

Description

Technical field [0001] The present invention relates to the field of communication technology, in particular to channel allocation in a wireless mesh network. Background technique [0002] The wireless Mesh network is a broadband wireless ad hoc network architecture system with the characteristics of "high bandwidth", "high reliability" and "high spectrum utilization". Wireless Mesh networks can be divided into two types: plane structure and layered structure. The flat structure can also be called a peer-to-peer structure, and all nodes are equal in network control, routing, and traffic management. Although the planar structure has the advantages of simple networking and high network reliability, its network control overhead is high and routing complexity is high; in the hierarchical structure, some adjacent nodes are aggregated into clusters, and each cluster is composed of clusters. Header (Cluster Header) and multiple cluster members (Cluster Member). A Mesh network is formed ...

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Application Information

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IPC IPC(8): H04W16/10H04W72/08H04W72/12H04W88/18H04W72/54
Inventor 胡致远刘国金黄天聪苏家勇唐军郭建丁邓建良
Owner CHONGQING UNIV
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