Ad hoc与Internet互连多媒体通信应用层网关设计与实现*

考虑到Ad hoc网络与Internet互连及多媒体通信的应用，给出了一种具有动态网关通告间隔和移动节点覆盖的新自适应网关发现算法，并在此基础上设计了应用层互连通信网关。NS（network simulator）仿真结果表明了该算法在减小互连多媒体通信整体开销和传输延时方面的优越性。互连平台的音/视频通信测试验证了基于应用层网关的互联通信方案对实现Ad hoc网络与Internet间的多媒体通信可行、有效。

Design and realization of application layer gateway for connecting and multimedia communication of Ad hoc and Internet

With the consideration of connecting and multimedia communication application between Ad hoc network and Internet, this paper proposed and simulated a new adaptive gateway discovery algorithm that not only could adjust the scope of gateway advertisement packets, but also could change the broadcasting interval dynamically. The NS simulation results show the advanced natures for the time delay and the bandwidth of multimedia communication. In addition,designed application layer gateway to realize the connecting based on this algorithm. Finally, by the way of performing video and audio communication tests on the integrated network platform,demonstrated the feasibility and the validity of this connecting scheme for realizing the multimedia communication between Ad hoc network and Internet.