OB-EWMA: A Link Metric for Reliability-constrained Routing in Wireless Networks

K. Mathews, R. Gotzhein

2021 IEEE Wireless Communications and Networking Conference (WCNC)

Abstract

Reliability of end-to-end communication is crucial for applications such as wireless networked control systems. To discover routes that satisfy specified reliability requirements, adaptive, conservative, and stable link reliability estimates are required. Traditional metrics do not support these objectives well enough. In this paper, we propose OB-EWMA (Outlier Bounded Exponential Weighted Moving Average) as link metric for reliability-constrained routing in contention-based wireless networks. We have implemented OB-EWMA along with a topology explorer, evaluate its fidelity in a Wi-Fi testbed, and compare it to other link metrics.

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