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DNCA: An efficient channel assignment for multi-interface multi-channel Ad Hoc wireless networks

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4 Author(s)
Xiaowei Ni ; Beijing Key Laboratory of Network System Architecture and Convergence, Beijing University of Posts and Telecommunications, Beijing 100876, China ; Chunxiu Xu ; Muqing Wu ; Jingrong Wen

The capacity of an IEEE 802.11-based multi-hop wireless network is limited. By effectively utilizing multiple non-overlapping channels and multiple interfaces, collision and co-channel interference can be reduced. This allows more concurrent transmissions and thus enhances the network throughput. In this paper, we introduce an efficient distributed negotiated channel assignment protocol, called DNCA. At each node, DNCA conducts a local optimization by greedy balancing the number of neighbors on each interface. By using DNCA, it does not require changes to higher-level protocols. We describe the design and implementation of DNCA, and analyze its performance using ns-3 network simulator. Our results show that DNCA provides much higher system capacity and lower end-to-end packet delay.

Published in:

2012 3rd IEEE International Conference on Network Infrastructure and Digital Content

Date of Conference:

21-23 Sept. 2012