基于可变位置区的动态位置管理算法  

A dynamic location management algorithm based on variable size location areas

作　　者：曾雁星[1] 邓建国[1] 朱世华[1] 殷勤业[1] 

机构地区：[1]西安交通大学电信学院信息工程研究所,陕西西安710049

出　　处：《通信学报》2004年第11期128-135,共8页Journal on Communications

基　　金：国家自然科学基金资助项目(60272071)教育部博士点基金资助项目(20020698024)

摘　　要：针对当前基于静态位置区的位置管理算法不能根据用户的呼叫和运动模式调整位置区大小的缺点,提出了动态位置区管理算法,它可以根据用户的运动速度和呼叫到达率动态优化位置区的大小。基于二维六边形多级位置区蜂窝网络结构以及液体流动运动模型假设,分别给出动态位置区算法和基于运动的动态位置区算法的优化位置区大小。理论分析和数值仿真结果表明,所提算法比静态位置区算法节省了大量的系统资源。A dynamic location management algorithm that can optimally adapt to the size of location areas according to the subscriber's speed and call arrival rate was presented to overcome the disadvantages of the current static location area based location management algorithm. The optimal location area sizes for the dynamic location area (DLA) and movement-based location area (MBLA) algorithms were derived using both multi-level location areas and the fluid flow mobility model of planar hexagonal cell topology. Analysis and numerical results show the DLA and MBLA algorithms can save considerably system resources comparing with the static location area (SLA) algorithm.

关 键 词：位置管理 位置更新 寻呼 移动通信 

分 类 号：TN914.4[电子电信—通信与信息系统]