Centralized Quasi-Static Channel Assignment for Multi-Radio Multi-Channel Wireless Mesh Networks


Employing multiple channels in wireless multihop networks is regarded as an effective approach to increas-ing network capacity. This paper presents a centralized quasi-static channel assignment for multi-radio multi-channel Wireless Mesh Networks (WMNs). The proposed channel assignment can efficiently utilize multiple channels with only 2 radios equipped on each mesh router. In the scheme, the network end-to-end traffics are first modeled by probing data at wireless access points, and then the traffic load between each pair of neighboring routers is further estimated using an interference-aware estimation algorithm. Having knowledge of the expected link load, the scheme assigns channels to each radio with the objective of mini-mizing network interference, which as a result greatly improves network capacity. The performance evalua-tion shows that the proposed scheme is highly responsive to varying traffic conditions, and the network per-formance under the channel assignment significantly outperforms the single-radio IEEE 802.11 network as well as the 2-radio WMN with static 2 channels.

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REN, J. and QIU, Z. (2009) Centralized Quasi-Static Channel Assignment for Multi-Radio Multi-Channel Wireless Mesh Networks. Wireless Sensor Network, 1, 104-111. doi: 10.4236/wsn.2009.12016.

Conflicts of Interest

The authors declare no conflicts of interest.


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