AI 中文总结
本文针对自组织网络中多路径路由因CSMA/CA效应导致路径非完全不相交的问题，提出采用区域不相交路径的新多路径路由算法，结合合适视频传输方案，可提升自组织网络的多路径视频传输效果。
AI 中文摘要
在自组织网络中，由于其网格拓扑结构，寻找多路径路由看似是一项简单任务，但由于这些网络中的CSMA/CA效应，除非采用合适的算法，否则找到的路径并非完全不相交。若精心设计此类算法，可改善这类网络上的多路径视频传输。通过使用节点不相交路径，预计每种情况下的端到端延迟和误码率（BER）相互独立。然而，由于自组织网络的自然特性和介质访问机制，任意源节点与目的节点间的端到端延迟及误码率取决于邻域内的通信模式。此时，部分中间节点需保持静默以尊重邻居，这会增加端到端延迟。为避免该问题，多路径路由算法可采用区域不相交路径替代节点不相交路径。本文提出一种新的多路径路由算法，该算法选择区域不相交路径，且这些路径还用于自组织网络上的视频多路径传输。结果表明，将此新算法与为已发现路径选择合适视频传输方案相结合，本文方法相较于以往使用的算法可获得更好的结果。
英文摘要
Finding multi-path routes in ad hoc networks due to their grid topology seems to be a trivial task, but because of CSMA/CA effects in these networks found paths are not completely disjoint unless an appropriate algorithm have taken into account. If such an algorithm provided and designed carefully it could improve multi-path video transmission over these kinds of networks. By using node-disjoint paths, it is expected that the end-to-end delay and BER in each case should be independent of each other. However, because of natural properties and medium access mechanisms in ad hoc networks the end-to-end delay and also BER between any source and destination depends on the pattern of communication in the neighborhood region. In this case some of the intermediate nodes should be silent to reverence their neighbors and this matter increases the end-to-end delay. To avoid this problem, multi-path routing algorithms can use zone-disjoint paths instead of node-disjoint paths. In this paper we demonstrated a new multi-path routing algorithm that selects zone-disjoint paths that in addition used for video multi-path transmission over ad hoc networks. It is shown that by using this new algorithm along with choosing an appropriate scheme for video transmission over discovered paths, our approach receives enhanced results comparing previously used algorithms.
