Ad Hoc无线网络中多媒体信息传输控制研究

Research on the Transmitting Scheme of Multimedia Information Based on Ad Hoc Wireless Network

通过对Ad Hoc无线网络中多媒体信息的传输控制方式进行了分析,对时间敏感的多媒体信息的轮询控制方式提出了一种对轮询控制进行改进的方法,将传输服务与转移查询做并行处理。然后,采用嵌入马尔可夫链和概率母函数的分析方法,建立了改进系统和原系统的数学模型,分析了平均等待时延,结合语音信息和视频信息的传输,说明了改进系统具有更好的性能。

This paper analyzes the transmitting scheme of information packet in Ad Hoc wireless network, especially the polling control for time-sensed multimedia information. Then it proposes a policy of parallel schedule for a polling system. The system enables simultaneous polling and transmissions of information packets. By the imbedded Markov chain theory and the generation function method, the mean values of information packet waiting time are explicitly obtained. Based on voice and video information mathematical analysis and simulation results show that the parallel schedules are more efficient.