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Performance Analysis and Resource Allocation for IEEE 802.11 based Wireless Networks

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4 Author(s)
Lingzhi Sheng ; Inst. of Software, Chinese Acad. of Sci., Beijing ; Limin Sun ; Xinyun Zhou ; Jian Ma

In this paper, a novel performance analytical model, which uses discrete Markov and M/M/1/K theory, is presented for IEEE 802.11 based wireless networks with finite load. Delay and loss caused by MAC contention and buffer queuing are studied in detail. This model and analysis give an in-depth insight and understanding to the unfairness between uplink and downlink flows that are forwarded by access point. Futhermore, based on this model, a resource allocation scheme for access point is proposed. This hybrid scheme uses bandwidth reservation based admission control and priority scheduling to guarantee bounded delay and loss for real-time traffics. Simulation results validate the analytical model and show that our scheme can avoid congestion and provide QoS under high traffic load

Published in:

Personal, Indoor and Mobile Radio Communications, 2006 IEEE 17th International Symposium on

Date of Conference:

11-14 Sept. 2006