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子网移动性管理的最终目标是移动网络中的所有节点都可以通过一个永久的IP地址被访问,并且当移动网络的路由器改变接入点时,内部节点仍然可以保持连续的通信。但当前的移动性管理方案由于其基本协议的切换时延较大,丢包率较高而不能适应实时业务和移动通信的要求,需要对移动性管理策略进行改善。文中介绍一种基于SIP和SCTP协议的混合方法Hybrid-NEMO,解决基于MIPv6的NEMO所存在的问题。通过建立相应模型并进行仿真对比分析,该方案能够保证网络移动切换过程中零丢包率和可控制的时延抖动,完全可以实现网络无缝移动的有关性能指标,从而较好地解决了现有移动网络模型实现无缝移动过程中的不足。
The ultimate goal of subnet mobility management is that all nodes in a mobile network can be accessed by a permanent IP address and the internal nodes can still maintain continuous communications as the router of the mobile network changes access points. However, the current mobility management solution needs to improve the mobility management policy because of its large switching delay and high packet loss rate, which can not meet the requirements of real-time services and mobile communications. This paper introduces a hybrid method based on SIP and SCTP Hybrid-NEMO, NEMO MIPv6-based problems. Through the establishment of corresponding models and comparative analysis of simulation, this scheme can guarantee zero packet loss rate and controllable delay jitter during the process of network mobile handover, and fully realize the related performance indicators of seamless network movement, so as to better solve the problem of There is lack of mobile network model to achieve seamless mobile process.