Non-saturated and saturated throughput analysis for IEEE 802.11e EDCA multi-hop networks

This paper presents first-step analytical expressions of non-saturated and saturated throughput for IEEE 802.11e Enhanced Distributed Channel Access (EDCA) multi-hop string-topology networks. Internal collisions in each node, concurrent transmission collisions among nodes, differences of CW
_min
and CW
_max
among access categories (ACs), and effects of contention zone are considered. By comparisons with simulation results, the validities of analytical expressions are confirmed.