LEO卫星网络指针转发位置管理策略  

Pointer forwarding strategy for location management in LEO satellite network

作　　者：周瑾[1] 朱立东[1] 吴诗其[1] 

机构地区：[1]电子科技大学抗干扰技术重点实验室,四川成都610054

出　　处：《系统工程与电子技术》2005年第6期971-973,共3页Systems Engineering and Electronics

基　　金：国家自然科学基金资助课题(60372013)

摘　　要：针对LEO卫星网络移动用户在全球范围内活动,其注册的VLR与HLR距离很远,信令代价大,如果MT的每次位置注册都要更新HLR中的记录,将会导致大量的信令开销。提出的一步指针转发策略,其主要思想是MT的位置更新信息不告知HLR,而在旧VLR中建立一指针指向新VLR,从而大大降低了MT位置更新代价。仿真结果显示此策略特别适用于MT来回注册现象频繁的LEO卫星网络,性能改善非常明显。An important aspect of the LEO satellite network is to manage the location of both users and satellites. Mass network signal flows and database updates and queries are required to accomplish such a task. A one-step pointer forwarding strategy is proposed for location registration in LEO satellite network, which reduces the expensive home location register (HLR) access. Simulation results indicate that the new strategy significantly decreases the location update cost, particularly for the satellite network where there exit frequent flip-flop effects.

关 键 词：位置管理 指针转发 LEO卫星网络 

分 类 号：TN927[电子电信—通信与信息系统]