关键词: Ad Hoc网络, 多路径路由协议, SASR

Abstract: The single-path and multi-path reactive routing protocols in Ad Hoc networks are compared and analyzed，and a new mutli-path routing protocol SAMSR，which is based on SASR，is proposed in this paper.The protocol obtains the more topology information of the network by recording duplicate RREQs packets so that more reachable paths are discovered.After receiving duplicate RREPs，intermediate nodes send re-selection packet RSEL to ensure the paths’ nodes disjoint.The authors evaluate the performance of proposed protocol SAMSR with NS-2，the result shows that SAMSR improves the packet delivery ratio and reduces the average end-to-end delay of the packet，but it increases the cost of the network.

Key words: Ad Hoc network, multi-path routing protocol, SASR