摘要
本文分析了IEEE802.11中DCF、PCF和IEEE802.11e中的EDCF、HCF四种接入机制。研究了这四种机制对实时业务的QoS支持能力。通过NS-2软件仿真得出,相比于802.11中的DCF、PCF,802.11e中的EDCF、HCF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 and PCF of IEEE 802.11 and EDCF and HCF of IEEE 802.11e are analyzed in this patper . And QoS capability for real time traffic with these mechanisms above is studied . EDCF functionality and HCF functionality improves QoS for real time traffic compare with DCF and PCF via simulation in NS-2 The works in this paper would give some helpful 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11X期153-155,共3页
Control & Automation
基金
国家863计划项目NO.2003AA123340
