Simulation: a problem-solving approach
Simulation: a problem-solving approach
Dynamic hierarchical database architecture for location management in PCS networks
IEEE/ACM Transactions on Networking (TON)
Location management techniques for mobile systems
Information Sciences: an International Journal
Improving location management for mobile users with frequency visited locations
Performance Evaluation
Eliminating Overflow for Large-Scale Mobility Databases in Cellular Telephone Networks
IEEE Transactions on Computers
Agent-based forwarding strategies for reducing location management cost in mobile networks
Mobile Networks and Applications
Dynamic Database Management for PCS Networks
ICDCS '01 Proceedings of the The 21st International Conference on Distributed Computing Systems
Performance modeling of location tracking systems
ACM SIGMOBILE Mobile Computing and Communications Review
Research: An efficient location management scheme for PCS networks
Computer Communications
Resolving mobile database overflow with most idle replacement
IEEE Journal on Selected Areas in Communications
Location management for next-generation personal communications networks
IEEE Network: The Magazine of Global Internetworking
International Journal of Mobile Communications
International Journal of Mobile Communications
A survey and comparison on localisation algorithms for wireless ad hoc networks
International Journal of Mobile Communications
An enhanced approach to determine connected dominating sets for routing in mobile ad hoc networks
International Journal of Mobile Communications
A novel location management in IP-based cellular networks
International Journal of Mobile Communications
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Location management is one of the most important issues of mobile networking systems. Most current mobile systems employ a two-tier database structure to store mobile users' information. HLR (Home Location Register) is used to retrieve user's information, and VLR (Visitor Location Register) is the temporal database for storing visitors' profiles. In the case when the number of users exceeds the capacity of the VLR due to mobility, database overflow occurs. To solve this problem, different replacement policies have been developed: random, most-idle, and inactive. In this paper, we propose a new policy, the least frequent replacement policy, which selects the least frequently accessed users as replacement candidates. Extensive simulation is carried out to predict the performance of the existing replacement policies and the proposed least frequent policy. Our simulation results show that the most idle and least frequent policies outperform the inactive and random replacement policies in most cases and the least frequent policy performs slightly better than the most idle replacement policy.