适合于TD-LTE公网集群系统的切换算法

在多数的公网集群通信系统中,对切换的时延要求很高,如何减小切换时延变得相当重要?在公网集群通信系统中引入TD-LTE技术,使切换时延得到一定的减小,但切换过程中,基站和eMME间的频繁通信仍然增大了延时?基于背景扫描的切换算法,其思想是让eMME将其控制的所有基站下的小区的信息缓存起来,在进行切换时,eMME只需要查询自己的信息列表,从中获取目标小区的切换门限值?载频?预留的信道资源等信息,无需与目标基站通信,这样就减少基站和eMME间的频繁通信,整个切换过程主要在源基站和eMME侧完成,从而获得更低的时延?

Switching algorithm suites public cluster system based on TD-LTE

In most public cluster communication system, requirements are high for the low time delay of switching. How to reduce the switching time delay becomes quite important. Public cluster communication system based on TD-LTE has some improvement in switching delay, but frequent communication between station and eMME also leads to the time delay. In switching algorithm based on the background of scan, eMME caches the information of communities which are covered by stations which are controlled by eMME, in order to reduce the frequent communication between station and eMME, so as to obtain lower delay.