Buffer Sizing in 802.11 Wireless Mesh Networks
The authors analyze the problem of buffer sizing for TCP flows in 802.11-based Wireless Mesh Networks. Their objective is to maintain high network utilization while providing low queueing delays. The problem is complicated by the time-varying capacity of the wireless channel as well as the random access mechanism of 802.11 MAC protocol. While arbitrarily large buffers can maintain high network utilization, this results in large queueing delays. Such delays may affect TCP stability characteristics, and also increase queueing delays for other flows (including real-time flows) sharing the buffer.