摘要
针对LEO卫星网中的动态位置区划分提出的一种基于时间和距离的位置更新策略,不同以往的处理方式,提出的更新策略中动态位置区更新半径随着用户的运动速度和业务繁忙程度而改变,对高速用户和低速用户分别采用不同的更新半径,当系统的业务繁忙程度改变时更新半径也相应的改变,仿真结果表明文中提出的位置更新策略对于移动用户比较多并且业务突发情况,能有效的减少位置管理开销,节省了系统资源。
This paper proposes a location update strategy based on time-distance for satellite networks.Different from other location update strategies,the proposed update strategy adopts different location update radiuses for the high-speed and low-speed terminals,and the location update radius varies in accordance with the speed and traffic change of terminals.The simulation indicates that the proposed location-area update strategy could obviously reduce the location management costs and save system resource in the situation of large-amount mobile users and large-quantity burst traffic.
出处
《通信技术》
2010年第6期64-67,共4页
Communications Technology
基金
国家重点基础发展计划(973计划)资助(编号:2009CB320405)
关键词
LEO卫星通信系统
位置管理
动态位置区
基于时间和距离的更新策略
LEO satellite communication system
location management
dynamic location-area
update strategy based on time-distance
