利用小区更新规避掉话  

To avoid Drop Call by Using Cell Update

作　　者：张虹 苏华强 黄展 

机构地区：[1]中国移动通信集团广西有限公司北海分公司,广西北海536000 [2]中国移动通信集团广西有限公司,广西南宁530022

出　　处：《广西通信技术》2013年第1期42-47,共6页Guangxi Communication Technology

摘　　要：TD-SCDMA系统掉话主要为上下行的无线链路控制层和L1层失步问题。下行L1层失步,可通过小区更新流程,使用户终端选择合适的小区,恢复业务,而上行L1层失步和上下行RLC层问题,系统都会释放资源,造成掉话。通过对RLC层及L1层失步问题的分析,结合小区更新流程进一步研究,提出以小区更新规避RLC层及L1层失步问题引起的掉话,通过合理设置及用户终端、系统侧的策略修改,使终端及网络策略更合理,性能更优。In TD-SCDMA system,the main reasons to cause drop call are considered as the loss of synchronization of uplink or downlink in L1 layer and the problems caused in RLC layer.For the loss of synchronization of downlink in L1 layer,by using cell update process,so that UE select the appropriate cell and the service is recovered;And for the loss of synchronization of uplink in L1 layer and the problems arise in RLC layer,which might cause the release of resource and drop call.In this essay,to analyze the loss of synchronization in L1 layer and the RLC layer problems,and according to the further research base on the process of cell update to propose that the use cell update to ovoid drop call as the loss of synchronization in L1 layer and the problems in RLC layer,as using the appropriate UE settings and the modification of policy in system to make the strategies for UE and network more appropriate and achieve better performance.

关 键 词：TD-SCDMA 小区更新 终端 无线网络控制器 无线链路控制 掉话 

分 类 号：TN929.5[电子电信—通信与信息系统]