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In a Wireless Mesh Network (WMN), the traffic is aggregated and forwarded towards the gateways. Strategically placing and connecting the gateways to the wired backbone is critical to the management and efficient operation of a WMN. This paper addresses the problem of gateways placement, consisting in placing a minimum number of gateways such that QoS requirements are satisfied. The paper proposes a polynomial time near-optimal algorithm which recursively computes minimum weighted Dominating Sets (DS), while consistently preserving QoS requirements across iterations. The paper evaluates the performance of the algorithm using both analysis and simulation, and show that it outperforms other alternative schemes by comparing the number of gateways placed in different scenarios.

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Format:PDFSize:268 KB
Date:May 2006
Pages:10

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