在基于MPLS的层次化移动IP网络中支持DiffServ的研究

Research on DiffServ supporting for MPLS-based hierarchical mobile IP networks

MPLS支持DiffServ、流量工程,能为网络提供较好的QoS保证,而移动IP(MIP)能为移动设备提供较好的移动性支持。文章探讨了在无线接入网中MPLS和MIP结合实现DiffServ的方案,并给出了一种在基于MPLS的层次化MIP网络结构中支持DiffServ的体系结构,设计了其节点功能模型和关键协议。方案中利用了层次化结构的区域注册和重路由机制,减少了切换时延和网络的信令负荷。

MPLS supported the DiffServ and traffic engineering, and it could provide better QoS guarantee for network. Mobile IP (MIP) could provide better mobility support for mobile equipmented. This paper discussed the integration of MPLS with MIP for supporting DiffServ model in the wireless access networks. A framework of MPLS-based hierarchical mobile IP networks with DiffServ supporting was presented. The nodes' functions models and key protocols were designed and analyzed. By adopt the regional registration and re-routing scheme in hierarchical networks, both the handover delay and signaling load may be decreased.