研究了IEEE 802．11e EDcA机制的原理和无线信道利用模型，阐明了EDCA参数设置对其性能的重要

性。在此基础上，提出了一种简单有效的参数调节策略。仿真结果表明，该参数调节机制在保证实时业务要求的同

时，可以显著提高数据流的吞吐率，优化了EDCA机制的运行性能。-Studied the mechanism of IEEE 802.11e EDcA theory and wireless channel model, clarifying the EDCA parameter settings the importance of its performance. On this basis, a simple and effective strategy for parameter adjustment. Simulation results show that the parameter adjustment mechanism to ensure real-time operational requirements at the same time, can significantly improve throughput of data streams to optimize the performance of EDCA mechanism.