摘要

This paper proposes a novel optimal control algorithm for multimedia traffic in IEEE 802.11e WLAN (Wireless LAN) and describes its control process based on Markov process. In this algorithm, an optimization policy is utilized to assign idle channel for traffics with different priority. The simulation results indicate that the proposed algorithm decreases the overhead caused by collision detection and retransmission mechanism. Moreover, both access efficiency and overall performance are enhanced remarkably, and wireless resource can also be employed more effectively in the novel algorithm compared with PCF (Point coordination function).