Abstract:

In IEEE802.11ebased wireless mesh networks, the

parameters (eg., contention windows, transmission opportunity) used in 802.11e's mechanism

is statically assigned in order to guarantee the quality of service, which is more suitable

to the communication nodes in one hop transmission with environment and not to the wireless

multihop environment. In view of the problem that data flows with long delay bound may

consume more channel time than data flows with short one so as to cause packet loss and

networks performance degradation, a fair share scheme based on the residual packet delay

bound, which is equally distributed among data packet, is proposed to alleviate the

retransmission number and promote the fairness between data flows. Simulation results show

that the proposed scheme is more effective than the original 802.11e protocol.

Key words: wireless mesh networks;quality of service;transmission opportunity;fair scheduling