WSN  Vol.1 No.2 , July 2009
Centralized Quasi-Static Channel Assignment for Multi-Radio Multi-Channel Wireless Mesh Networks
Author(s) Juan REN*, Zhengding QIU*
ABSTRACT
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.

Cite this paper
nullJ. REN and Z. QIU, "Centralized Quasi-Static Channel Assignment for Multi-Radio Multi-Channel Wireless Mesh Networks," Wireless Sensor Network, Vol. 1 No. 2, 2009, pp. 104-111. doi: 10.4236/wsn.2009.12016.
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