Transport mechanism for streaming media in wireless network

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Transport mechanism for streaming media in wireless network

Received:2008-07-07 Revised:2008-09-12 Online:2009-01-01 Published:2009-01-01
Contact: Wei Sun

一种适用于无线网络的流媒体传输机制

孙伟温涛郭权

东北大学东北大学东软信息学院东北大学东软信息学院

通讯作者: 孙伟

Abstract

Abstract: A novel transport protocol Wireless Multimedia Transport Congestion Control (WMTCC) to was presented to improve the performance of streaming media transmission over wireless networks. The proposed protocol can distinguish packet loss due to network congestion from packet loss due to wireless link error by sending probing packets. In this way the sender can get the accurate state of the networks and adjust the transmission rate appropriately to maintain the Quality of Service (QoS) of the streaming media services. Due to the accurate distinguishing of the packet loss between network congestion and wireless link error, the protocol can maintain high throughput even with high bit error rate. The simulation results show that the new protocol can get higher throughput and larger congestion window in wireless networks and performs consistently better than other existing mechanisms.

Key words: congestion control, wireless network, streaming media

摘要： 为保证无线网络中多媒体数据的传输质量，提出了一种适用于无线网络的流媒体传输机制（WMTCC）。该机制通过发送探测报文区分网络拥塞丢包和链路误码随机丢包，准确判断网络的拥塞状况，实施发送速率调节，保证了流媒体服务质量(QoS)。由于准确区分出无线链路误码丢包，该机制在链路误码率较高时能维持较高的网络吞吐量。仿真实验结果显示在高误码率无线网络中，该机制可以获得更高的吞吐量和更大的拥塞窗口，并且发送速率的变化更加平滑。

关键词: 拥塞控制, 无线网络, 流媒体

Wei Sun Wen Tao Guo Quan. Transport mechanism for streaming media in wireless network[J]. Journal of Computer Applications.

孙伟温涛郭权. 一种适用于无线网络的流媒体传输机制[J]. 计算机应用.

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