Reducing location update cost in a PCS network
Reducing location update cost in a PCS network
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DOI：
10.1109/pimrc.1996.567488
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发表时间：
1996-10
期刊：
影响因子：
--
通讯作者：
Yi-Bing Lin
中科院分区：
文献类型：
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作者：
Yi-Bing Lin
个人通信服务网络中的位置跟踪操作是昂贵的。已经提出了几种策略来降低位置更新成本。本文研究了一种特殊情况下的位置跟踪算法，称为交替定位算法。这种特殊情况称为双定位算法(TLA)。提出了一个分析模型来比较TLA和IS-41协议的性能。我们的研究表明，TLA的性能受到用户移动模式和呼叫流量的显著影响。如果用户移动性高于呼叫频率，或者用户倾向于返回到之前访问的注册区，则TLA可能会显著优于IS-41。我们还观察到，注册区可移植停留时间的变化对TLA的性能有影响(即，方差越大，性能越好)。方差越大，TLA的性能越好。
Location tracking operations in a personal communications services network are expensive. Several strategies have been proposed to reduce the location update cost. This paper studies a special case of a location tracking algorithm called the alternative location algorithm. This special case is referred to as the two location algorithm (TLA). An analytical model is proposed to compare the performance of TLA and the IS-41 protocol. Our study indicates that the performance of TLA is significantly affected by the user moving patterns and the call traffic. If the user mobility is higher than the call frequency or the user tends to move back to the previously visited registration areas, then TLA may significantly outperform IS-41. We also observe that the variance of the portable residence times in registration areas has impact on the performance of TLA (i.e. better performance is expected for larger variance). The larger the variance the better the performance of TLA.