改善個人通信服務系統之位址追蹤策略

An Improvement on Location Tracking Strategies for Personal Communication Services

高明權(Min-Chuan Kao)

指導教授 ： 劉如生

元智大學/工程學院/電機與資訊工程研究所/碩士(1998年)

摘要

“Location Tracking Strategies” is an important issue for Personal Communications Services (PCS). Usually, callee’s location may vary from time to time. Therefore, in mobile communications’ environment, the system must keep track of callee’s location all the times to transfer information to the required callee correctly.
This thesis proposes a “Moving Patterns Strategy (MP)” for PCS with the following steps. First, the local system will collect user’s history moving data, find the periodic users through statistic method, and generate the forecasting location for any time period. Then the caller and callee may exchange their forecasting data properly within communications period. Using this strategy, the time for call delivery may be shorted, and overall system’s performance may be prompted due to decreasing the frequencies of querying HLR database.
On the implementation, we will study user’s history moving data, design a general algorithm to figure out its periodic rules. Next, a protocol will be presented to combine MP strategy into PCS. Then, we will simulate our system to verify its functions and possible benefits.

關鍵字

通信服務系統 ； HLR/VLR 資料庫 ； 位址追蹤 ； 移動軌跡

並列摘要

“Location Tracking Strategies” is an important issue for Personal Communications Services (PCS). Usually, callee’s location may vary from time to time. Therefore, in mobile communications’ environment, the system must keep track of callee’s location all the times to transfer information to the required callee correctly.
This thesis proposes a “Moving Patterns Strategy (MP)” for PCS with the following steps. First, the local system will collect user’s history moving data, find the periodic users through statistic method, and generate the forecasting location for any time period. Then the caller and callee may exchange their forecasting data properly within communications period. Using this strategy, the time for call delivery may be shorted, and overall system’s performance may be prompted due to decreasing the frequencies of querying HLR database.
On the implementation, we will study user’s history moving data, design a general algorithm to figure out its periodic rules. Next, a protocol will be presented to combine MP strategy into PCS. Then, we will simulate our system to verify its functions and possible benefits.

並列關鍵字

PCS ； HLR/VLR ； Moving Patterns Strategy ； Location Tracking Strategies ； Personal Communication Services

參考文獻

[1] D. J. Goodman, “Cellular Packet Communications,” in IEEE Trans. On Communications, vol. 38 , pages 1272-1280, 1990.

[4] “Network and Operation Plan for Access Services to Personal Communications Services (PCS) Providers.” Bellcore Spec. Rep. SR-TSV-002402, Aug 1992.

[7] A. Bar-Noy and I. Kessler, “Tracking Mobile Users in Wireless Communications Networks,” in Proceedings of IEEE Infocom Conference on Computer Communications, pages 1232-1293, 1993.

[8] H. Xie, S. Tabbane and D. J. Goodman, “Dynamic Location Area Management and Performance Analysis,” in Proceedings of IEEE VTC ’93, Secausus, NJ, pages 536-539, 1993.

[9] A. Bar-Noy, I. Kessler and M. Sidi, “Tracking Strategies in Wireless Networks,” in Proceedings of IEEE Information Theory, pages 413, 1994.