A Stop-or-Move Mobility model for PCS networks and its location-tracking strategies

Authors:
Yu-Chee Tseng;Lien-Wu Chen;Ming-Hour Yang;Jan-Jan Wu
Affiliations:
Department of Computer Science and Information Engineering, National Chiao-Tung University, Hsin-Chu 30050, Taiwan;Institute of Information Science, Academia Sinica, Taipei 11529, Taiwan;Department of Computer Science and Information Engineering, National Chiao-Tung University, Hsin-Chu 30050, Taiwan;Institute of Information Science, Academia Sinica, Taipei 11529, Taiwan
Venue:
Computer Communications
Year:
2003

Citing 12
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Abstract

This paper considers the location-tracking problem in PCS networks. Solutions to this problem in fact highly depend on the mobility patterns of mobile subscribers [ACM DIAL-M (1999) 72]. In the literature, many works have assumed a simple random walk model, where mobile subscribers always stay in a roaming state and can move in any direction with equal probability. In this paper, we propose a new Stop-or-Move Mobility (SMM) model, which is characterized by the following features: 'transition between stop and move', 'infrequent transition', 'memory of roaming direction', and 'oblivious in different moves'. Based on this mobility model, a static and an adaptive location-tracking Scheme are developed. The schemes only need to keep very little information for each user. Analyses and simulations are provided, which show that the proposed schemes are quite prospective.