中文摘要：

分析网络移动现有方案在多穴负载均衡和嵌套路由优化方面存在的问题．基于最优路径选择算法和相应的路径评价标准，提出了支持综合负载均衡和路由优化的网络移动增强协议．该协议实现多移动网络前缀、多移动路由器、多家乡代理的负载均衡以及嵌套多穴移动网络全局和内部路由优化，解决嵌套移动网络的多角路由、隧道嵌套问题．此外，该协议兼容以前的网络移动标准，改动较少．协议的性能分析结果表明，和已有的方案相比，增强协议在帮助移动网络获得高吞吐量的同时，传输延时降低了近一半，可用连接增加了30％，而且性能更加稳定．

英文摘要：

After analyzing the problems of the existing schemes in terms of flow balance and route optimization within the multihomed and nested mobile networks, an improved protocol is proposed with comprehensive flow balance and global and local route optimization support, which is based on a new and effective path evaluation metrics and a corresponding best path recognition algorithm. The improved protocol provides the comprehensive flow balances among multi-MNP （mobile network prefix）, multi-MR （mobile router）, multi-HA （home agent） and also route optimization inside and outside the multihomed and nested mobile networks, addressing suboptimal multi-angular routing and tunnel in tunnel problems. In addition, less modifications to previous protocols are required. Performance evaluation indicates that, compared with the existing solutions, this protocol cuts down the delay almost by half while available connections increase 30% and high throughput and stable performance are achieved.