摘要
本文分析了IEEE802.11中DCF和IEEE802.11e中EDCA两种信道接入机制,研究了无确认策略在两种机制下对语音等实时业务QoS的支持能力。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。
DCF of IEEE802.11 and EDCA of IEEE802.11e are analyzed in this paper. And QoS capability for real time traffic such as voice when no ACK policy is used with the two mechanisms above is studied. 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.
出处
《微计算机信息》
北大核心
2005年第1期111-112,共2页
Control & Automation
