Indoor deployment of IEEE 802.11s mesh networks: Lessons and guidelines

Authors:
Ying-Dar Lin;Shun-Lee Chang;Jui-Hung Yeh;Shau-Yu Cheng
Affiliations:
Department of Computer Engineering, National Chiao Tung University, Taiwan, ROC;Department of Computer Engineering, National Chiao Tung University, Taiwan, ROC;Realtek Semiconductor Corp., Taiwan, ROC;Department of Computer Engineering, National Chiao Tung University, Taiwan, ROC
Venue:
Ad Hoc Networks
Year:
2011

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Abstract

Emerging wireless mesh networks (WMNs) are known for their fast and low cost deployment. Conventional mesh deployment focuses on the outdoor environment, which regards the WMNs as backbone networks. This study deploys and measures indoor IEEE 802.11s mesh networks to extend WLAN capabilities with extensive experiment configurations. The testbed is constructed in a laboratory and a field crossing three floors of a building. Disagreeing with previous research, the results of this study indicate that RTS/CTS can improve throughput by up to 87.5%. Moreover, compared with the IEEE 802.11b/g, 802.11n achieves better fairness for multi-stream or multi-hop communications. Experimental results also suggest that a longer beacon interval, e.g. 500ms, can improve channel efficiency for a denser deployment. On the other hand, sparser deployments should use a shorter beacon interval, e.g. 100ms, to enhance link stability.