Optimization of wireless resources for personal communications mobility tracking
IEEE/ACM Transactions on Networking (TON)
Mobile users: to update or not to update?
Wireless Networks
Reduction of Location Update Traffic Using Virtual Layer in PCS
ICPP '02 Proceedings of the 2001 International Conference on Parallel Processing
Location management methods for third generation mobile systems
IEEE Communications Magazine
Performance Evaluation of the Optimal Hierarchy for Cellular Networks
ICCS '07 Proceedings of the 7th international conference on Computational Science, Part IV: ICCS 2007
An effective location management strategy for cellular mobile networks
ICCSA'05 Proceedings of the 2005 international conference on Computational Science and its Applications - Volume Part I
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Since the location update process requires heavy signaling traffics, reducing the location update cost has been a critical reserach issue. This paper proposes to employ hierarchical structure in PCS networks to reduce the location update cost. The paper also develops analytical models to evaluate the performance of the proposed approach. The evaluation shows that the proposed approach reduces the location update costs by reducing the update rate of the home location register. The reduction of the location update cost becomes larger when the degree of hierarchy is larger, the size of location area is smaller, and the average residual time of mobile users is smaller.