Dynamic location strategy for hot mobile subscribers in personal communications

Authors:
Hwa-Chuan Lin;Singling Lee;Wei-Yan Lin
Affiliations:
Department of Computer Science and Information Engineering, National Chung Cheng University, 160, San-Hsing, Ming-Hsiung, Chiayi 62107, Taiwan, ROC;Department of Computer Science and Information Engineering, National Chung Cheng University, 160, San-Hsing, Ming-Hsiung, Chiayi 62107, Taiwan, ROC;Department of Computer Science and Information Engineering, National Chung Cheng University, 160, San-Hsing, Ming-Hsiung, Chiayi 62107, Taiwan, ROC
Venue:
Computer Communications
Year:
2003

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Abstract

It is possible to continually receive large numbers of calls in their movements for hot mobile subscribers who are the valued clients in Personal Communications Services (PCS). This paper introduces an efficient location strategy for those hot subscribers in PCS with hierarchical database architecture. The proposed strategy can dynamically adjust the positions of bypass pointers according to the mobility and calling pattern of each user. When a callee moves out of his/her current registration area (RA), our strategy is to calculate a new appropriate position for the caching databases. Then we may adjust the caching databases to the appropriate positions instead of just deleting them, as what is done in Eager-Caching strategy. Simulation results are provided to demonstrate the cost effectiveness of the proposed strategy for hot subscribers under various parameters in comparison with the Basic and Eager-Caching strategies.