摘要： 实现链路的无缝切换是支持移动网络的关键技术。为了使切换过程中的包丢失和包延迟最小，对IEEE802.16e标准中规定的移动宽带无线接入系统的切换过程进行研究。针对WiMAX网络体系结构中的系统内切换、系统间切换以及实现端到端QoS保证的切换3种主要切换方式，介绍相应的切换机制，描述主要切换流程，并给出改进机制和最新研究成果。

关键词: 移动WiMAX, 切换, 移动IP, 服务质量

Abstract: Realizing the seamless handover is the key technology to support mobile network. The handover process of mobile broadband wireless access system prescribed in IEEE802.16e standard is studied. The corresponding handover mechanisms of intra-system handover, inter-system handover, and guaranteeing end-to-end QoS handover are introduced. Their major handover procedures are described and improved schemes relevant together with the latest research harvest are supplied.

Key words: mobile WiMAX, handover, mobile IP, QoS

中图分类号: 

• TN929