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Multi-radio-frequency multi-channel wireless Mesh network channel distribution method

A multi-radio multi-channel and channel allocation technology, applied in the field of multi-radio multi-channel wireless Mesh network channel allocation

Active Publication Date: 2013-04-17
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

However, these methods do not combine network connectivity and interference well for joint optimization

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  • Multi-radio-frequency multi-channel wireless Mesh network channel distribution method
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  • Multi-radio-frequency multi-channel wireless Mesh network channel distribution method

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Embodiment Construction

[0051] In order to describe the multi-radio multi-channel wireless Mesh network channel allocation method proposed by the present invention in more detail, combined with the attached figure 1 , an example is as follows:

[0052] In the MRMC-WMN network, V is a collection of nodes, and E is a collection of edges. C w Represents the orthogonal channel set of the entire network, the number of elements in the set is w, and each channel is labeled as 1, 2, 3...w, that is, C w ={1,2,3...w}. C(v) represents the set of channels allocated by node v, the number of elements in the set is |C(v)|, and the number of radio interfaces installed on each node is s.

[0053] Considering the actual situation, that is, when a node transmits information at a certain moment, the number of channels allocated by the node cannot be greater than the number of radio frequency interfaces installed by the node. To fully meet the channel allocation requirements of radio frequency interfaces, the number...

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Abstract

The invention provides a multi-radio-frequency multi-channel wireless Mesh network channel distribution method. The multi-radio-frequency multi-channel wireless Mesh network channel distribution method comprises the following steps of: constructing a combined optimization model of the connectivity of the multi-radio-frequency multi-channel wireless Mesh network and interference among chains; firstly optimizing the connectivity of the network only, and then carrying out combined optimization on the connectivity and the interference of the network on the basis, thus obtaining an optimal value; flexibly adjusting the specific weight of the connectivity and the interference of the network in an optimization objective by setting a weight factor alpha so as to adapt to different needs; and solving a near-optimal solution of the optimization model by a heuristic algorithm, using a traversal method to realize non-interference channel distribution of the network, enabling the connectivity of the network to be largest, and then carrying out circulating channel distribution on the network. The multi-radio-frequency multi-channel wireless Mesh network channel distribution method is very simple and easy to realize, and has good application prospect.

Description

technical field [0001] The invention belongs to the technical field of mobile communication, and specifically refers to a multi-radio multi-channel wireless Mesh network channel allocation method. Background technique [0002] In recent years, wireless mobile communication technology has made great progress, and mobile communication has brought profound changes to people's lifestyles. Currently common wireless communication systems include cellular mobile communication systems, WiFi, WiMAX, wireless sensor networks, mobile Ad hoc networks, and wireless Mesh networks. Among them, the wireless mesh network WMN is a new type of broadband access network, also known as a wireless mesh network. WMN technology is not a technical system equivalent to the third generation mobile communication system, WiFi and WiMAX. It is a change in the traditional networking mode, and this change brings new features and new problems to the traditional network technology. question. WMN technolog...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/02H04W72/04
Inventor 张晖吴鹏杨龙祥朱洪波
Owner NANJING UNIV OF POSTS & TELECOMM
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