移动WiMAX系统中的切换优化方案分析

Analysis on Handover Optimization and Realization Mechanism in Mobile WiMAX System

IEEE和WiMAX论坛相继针对移动WiMAX系统定义了标准的切换机制。为实现全移动的目标,应尽量减少移动WiMAX系统的切换时延,同时保证切换过程中数据的完整性。本文简单介绍了WiMAX系统基本原理和移动性管理机制,详细分析了在移动WiMAX系统中如何优化切换时延,同时提出了一种合理的保证数据完整性的切换方案。

IEEE and WiMAX forum both defined normative procedure of handover for mobile WiMAX system. In order to achieve ＂full mobility＂, mobile WiMAX system shall minimize handover latency and support data integrity during handover. In this paper, principles of WiMAX system and mechanisms of mobility management are introduced, how to shorten the handover latency is detailed and a data integrity mechanism during handover is proposed.