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在AdHoc无线自组织多跳网络中,IEEE802.11e协议采用了增强型分布信道接入机制,用于为实时多媒体业务提供有效的QoS保证机制。简单介绍和对比了802.11分布式协调功能和802.11e增强型分布信道接入机制两种信道接入机制,并通过使用网络仿真软件OPNET,模拟了实时的视、音频业务在802.11分布信道接入机制和802.11e增强型分布信道接入机制信道接入机制下在不同网络负载下的性能并进行了仿真分析。
In AdHoc wireless ad hoc multi-hop networks, the IEEE 802.11e protocol uses an enhanced distributed channel access mechanism to provide an efficient QoS guarantee mechanism for real-time multimedia services. The two kinds of channel access mechanism of 802.11 distributed coordination function and 802.11e enhanced distributed channel access mechanism are briefly introduced and compared. By using the network simulation software OPNET, the real-time visual and audio service is simulated in the 802.11 distributed channel access mechanism And 802.11e enhanced distributed channel access mechanism under the channel access mechanism under different network load performance and conducted a simulation analysis.