Packet Delay Metrics for IEEE 802.11 Distributed Coordination Function

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Executive Summary

In this paper, the authors introduce a comprehensive packet delay analysis for wireless networks based on IEEE 802.11 Distributed Coordination Function (DCF). They develop mathematical models that calculate a set of packet delay metrics, namely the average packet delay for successfully transmitted packets, the average packet delay of successfully transmitted packets experiencing a specific number of collisions, the average packet drop time, the delay jitter and the delay distribution by computing the probability of a packet to be successfully transmitted experiencing delay time lower than a given value. All the developed models are based on calculating station's delay time at the transmission slot(s) plus the average time that station defers at back-off slots before successful transmission.

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