Mobility

Link-Level Measurements of Outdoor 802.11g Links

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Executive Summary

802.11 based outdoor community mesh networks have seen several deployments in the last few years. Prior link level studies focus mostly on 802.11b links, and a systematic and detailed link-level study of 802.11g is lacking. This paper presents a study of the link error rate as a function of the RSSI; it closely examines the RSSI threshold beyond which the link error rate is negligible. Its study is based on a wireless network testbed established in IIT Bombay. The testbed has nine nodes with links varying from 90 m to 1.2 km. It finds that the link abstraction holds in the case of 802.11g and RSSI threshold range can be used for the predictable performance for such links.

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