| Publisher | University of California | ||
|---|---|---|---|
| Format | 220.0KB PDF | Date added | 23 Apr 2006 |
| Topics | Mobile - Wireless Communications, Wireless, Wi-Fi (802.11) | ||
| Downloads | 214 | ||
The capacity problem in wireless mesh networks can be alleviated by equipping the mesh routers with multiple radios tuned to non-overlapping channels. However, channel assignment presents a challenge because co-located wireless networks are likely to be tuned to the same channels. The resulting increase in interference can adversely affect performance. This paper presents an interference-aware channel assignment algorithm and protocol for multi-radio wireless mesh networks that address this interference problem. It utilizes a novel interference estimation technique implemented at each mesh router. An extension to the conflict graph model, the multi-radio conflict graph, is used to model the interference between the routers. This paper demonstrates the solution's practicality through the evaluation of a prototype implementation in an IEEE 802.11 testbed.
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