EDCA functionality based on no ACK policy improves QoS for real time traffic compare with DCF via simulation in opnet, which has directional significance for transmitting real time traffic in current WLAN network.

• 通过opnet软件仿真得出,相比于DCF,基于无确认策略的EDCA机制提高了实时业务的QoS,对当前WLAN网络中实时业务的传输有着重要的指导意义。