动态位置区分组寻呼策略研究

在低轨卫星通信系统中，位置区管理是移动性管理的重要组成部分。动态位置区相比于静态位置区能够降低移动性管理的系统开销，即当用户移动距离超过更新半径或者在位置区内的停留时间超过强制更新时间，则进行一次主动位置更新。分组寻呼是在广播寻呼和逐个寻呼之间的折中方案，优化了系统性能。文章基于动态位置区划分方案，根据用户的移动特性，提出了3种分组寻呼方案，研究了每种方案的开销和适用范围，并进行了分析和仿真比较。

Selective Paging Strategy Based on Dynamic Location Area

Location management is one of the key problems of movement management in low orbit satellite communication system.Comparing with static location area,dynamic location area can reduce the cost of movement management,which is determined by the characteristic of user movement.In fact,each user only keeps two counters,of which one is the distance covered and another is the time passed.A location update is performed when these counters exceeds a predefined threshold value.Selective paging strategy is an optimize...