一种嵌套移动网络中的路由优化机制

Routing Optimization Scheme for Nested Mobile Networks

针对嵌套移动网络中的乒乓路由和数据包多层隧道封装问题,将区域管理和移动自组织网络多跳转发的路由思想结合起来,提出了一种新的移动网络路由优化机制。该机制通过构建新的网络优化模型,实现域内自主路由和数据最短路径转发;通过更新接入点的路由信息,保持原有的转交地址CoA不变,减小了域内切换的时延。性能分析表明,该机制减少了数据传输的封装次数和隧道长度,具有较小的传输和切换时延。

NEMO in nested mobile networks suffers from the pinball routing problem, resulting in multilevel tunneling encapsulation and long packet transmission delay. To solve this problem, a no- vel routing optimization scheme that combines domain management and mobile ad hoc multi-hop routing mechanism is proposed. In the scheme, the CoA of MR is configured according to the prefix of RMR uniformly and the packet is transmitted via the shortest path; when MR performs Intra-domain handoff, it need not reconfigure new CoA, just update the routing information at new access point. Evaluation results show that the scheme can shorten tunnel length, achieve low packet transmission delay and low handoff latency.