支持自愈恢复的WMPLS自组网组播协议

WMPLS Multicast Protocol for Ad Hoc Network Supporting Recovery

基于无线多协议标签交换(WMPLS)协议体系,结合无线移动自组网的特点,提出一种支持自愈恢复的WMPLS信令建立标签交换路径的自组网组播协议RA-WMPLS。该协议基于LDP信令协议做了组播扩展,使用LDP消息进行组播树的建立和维护,并建立LSP自愈恢复机制,既实现组播的功能,又能够快速恢复中断的链路,提高网络的性能。通过构建AdHoc网络仿真模型,仿真对比RA-WMPLS和ODMRP路由协议的性能,并验证了自愈恢复特性。

Based on framework of Wireless Multi-Protocol Label Switching（WMPLS） protocol and characteristic of mobile Ad Hoc network, this paper proposes a multicast protocol RA-WMPLS for Ad Hoc network using WMPLS signaling protocol supporting recovery to establish Label Switch Path（LSP）. With label messages and the extending of existing messages introducted to LDP signaling protocol, RA-WMPLS sets up and maintains multicast tree. It realizes multicast function, recovers from a link or node failure, improves network performance. This paper builds an Ad Hoc network simulation model, analyses and compares the performance of RA-WMPLS and ODMRP, and validates its recovery.