移动WiMAX中结合关联级别2且利用R6信令交互进行参数协商的硬切换机制

移动WtMAX技术具有传输距离远、接入速度高、支持移动性等特点，该系统网络的切换是支持移动性的关键技术，如果切换时延越大，会造成MS在越长的时间内无法与服务BS交互媒体面数据，从而使网络服务质量大幅下降。本文针对移动WiMAX现有切换机制的时延进行了分析，发现其切换时延极大的影响了WiMAX的服务质量，因此本文在分析了约束切换时延优化的主要因素上提出一种新的结合关联2且利用R6信令进行参数协商的硬切换机制，经过模拟测试和性能分析得出该机制可以有效减小硬切换时延，能够满足移动WiMAX较高服务质量的要求。

Mobile WiMAX hard handover mechanism of utilized association and R6 signaling alternation

Mobile WiMAX is a wide band wireless access MAN technology based on IEEE802. 16e protocol, this system＇s handover is the key technology that supports the mobility, if handover process is not well, it will tend to make the cell overload or mobile station drop, which will greatly damaged the network serving quality. So, how to reduce the handover time delay is the hot issue of mobile WiMAX network research. This study brings forward a new mechanism of utilized association and R6 signaling alternation into handover, Finally, the paper testes the hard handover scheme in analog laboratory in order to simulate the really experiment environment, and the results show that this mechanism can effectively reduce handover delay to fulfill the high QoS demand of mobile WiMAX.