摘要
在移动通信系统中,移动性管理是一个具有挑战性的研究内容.提出了移动台自调控移动性管理策略:引入一个控制参数m,移动台根据系统的实际查找时间,采用指数平均方法预测下一次查找时间,进而对m进行调节,以平衡系统在位置更新及位置查找方面的费用,提高系统的整体效率.给出了具体的算法,并对这一策略与基本的移动性管理策略及普通的“指针推进策略”的代价进行对比.
Mobility management is a challenging topic in mobile computing environment. In this paper, a self-adjusting mobility management strategy is proposed, where a controlling parameter m is introduced. In order to balance the cost of location update against the cost of location query and to increase the performance of the system, a mobile adjusts m according to the forecast tracking time calculated from the real time of tracking the mobile by means of exponential average. The details of the algorithm are given. Furthermore, the strategy proposed is compared with the basic mobility management strategy and the pointer forwarding strategy.
出处
《计算机研究与发展》
EI
CSCD
北大核心
2002年第6期656-659,共4页
Journal of Computer Research and Development
基金
本课题得到国家自然科学基金(60074035)
浙江省自然科学基金(600042)资助
