一种时空混合的位置管理方案  

A Spatio-Temporal Hybrid Location Management Scheme

作　　者：陈发堂[1] 韩才君 张航 李欣超 CHEN Fatang;HAN Caijun;ZHANG Hang;LI Xinchao(School of Communication and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China)

机构地区：[1]重庆邮电大学通信与信息工程学院,重庆400065

出　　处：《北京邮电大学学报》2023年第3期67-72,共6页Journal of Beijing University of Posts and Telecommunications

基　　金：教育部-中国移动科研基金研发项目(MCM201805-2)。

摘　　要：目前,移动通信系统中的位置管理方案忽略了周期性位置更新的影响,从而导致网络对终端位置跟踪的性能下降。对此,提出了一种移动性和周期性结合的位置跟踪方案。首先,终端跨越跟踪区域列表的边界或定时器达到阈值时,都会向网络发起位置更新请求;然后,网络呼叫时先向上次终端发生位置更新的跟踪区发起寻呼,如果呼叫不成功,再向跟踪区列表发起寻呼;最后,利用马尔可夫链模型对位置更新和寻呼的信令开销进行了推导。仿真实验结果表明,所提方案得到了跟踪区域列表的最佳配置,从而使总信令开销最小化。At present,the location management scheme in mobile communication systems ignores the impact of periodic location updates,which leads to the degradation of the performance of the network for terminal location tracking,and a location tracking scheme combining mobility and periodicity is proposed.First,the terminal initiates a location update request to the network whenever it crosses the boundary of the tracking area list or when the timer reaches the threshold.Then,the network calls first initiate paging to the tracking area where the last location update of the terminal occurred,and then initiates paging to the tracking area list if the call is unsuccessful.Finally,the signaling overhead of location update and paging is derived using a Markov chain model.The simulation experimental results show that the proposed scheme obtains the optimal configuration of the tracking area list,thus minimizing the total signaling overhead.

关 键 词：移动通信 位置管理 位置更新和寻呼 跟踪区域列表 马尔可夫链 

分 类 号：TN929.5[电子电信—通信与信息系统]