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Application of congestion avoidance mechanism in multimedia transmission over mesh networks

机译:拥塞避免机制在网状网络上多媒体传输中的应用

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摘要

The unreliable nature and shared multi-media of multi-hop communications cause the deployment of multi-media applications in wireless mesh network (WMN) a thorny problem. For instance, video is usually compressed into a group of frames before transmission, resulting in unrecoverable destruction during the display process. The importance of different frames' type is quite different. However, they are considered as same in most existing WMNs. In this paper, we propose a novel Congestion Avoidance Mechanism for multimedia transmission over 802.11e mesh networks. In our mechanism, we added priority for video packets. According to the significance of frames, we proposed an adaptive mechanism involves the mapping of H.264 video packets to appropriate access categories in IEEE 802.11e standard. Simulation results show that our mechanism improves quality of service (QoS) of multimedia transmission.
机译:多跳通通信的不可靠性和共享多媒体导致无线网状网络(WMN)中的多媒体应用部署一个棘手的问题。例如,视频通常被压缩到传输之前的一组帧中,从而在显示过程中导致不可恢复的破坏。不同框架类型的重要性是完全不同的。但是,它们在最现有的WMN中被认为是一样的。在本文中,我们提出了一种新的802.11e网状网络多媒体传输的拥塞避免机制。在我们的机制中,我们为视频数据包添加了优先级。根据帧的意义,我们提出了一种自适应机制,涉及将H.264视频分组映射到IEEE 802.11e标准中的适当的接入类别。仿真结果表明,我们的机制提高了多媒体传输的服务质量(QoS)。

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