Optimization of a database hierarchy for mobility tracking in a personal communications network
Performance '93 Proceedings of the 16th IFIP Working Group 7.3 international symposium on Computer performance modeling measurement and evaluation
User profile replication for faster location lookup in mobile environments
MobiCom '95 Proceedings of the 1st annual international conference on Mobile computing and networking
Local anchor scheme for reducing signaling costs in personal communications networks
IEEE/ACM Transactions on Networking (TON)
Location management methods for third generation mobile systems
IEEE Communications Magazine
Mobile location management in ATM networks
IEEE Journal on Selected Areas in Communications
A fully distributed location registration strategy for universal personal communication systems
IEEE Journal on Selected Areas in Communications
A caching strategy to reduce network impacts of PCS
IEEE Journal on Selected Areas in Communications
A User Pattern Learning Strategy for Managing Users' Mobility in UMTS Networks
IEEE Transactions on Mobile Computing
An alternative strategy for location update and paging in mobile networks
Computer Communications
Evaluating location management schemes for third generation mobile networks
Computer Communications
A built-in memory model for reducing location update cost in mobile wireless networks
Computer Communications
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In this paper, we propose three hierarchical location management strategies for wireless mobile communication systems. The first one is home server first (HSF) scheme in which callee's location is queried at callee's home location server first. Next, we propose least-common-ancestor server first (LSF) scheme in which a search starts at the least-common-ancestor server of caller's current location and callee's home server. Finally, we propose distributed LSF in which the location management is made on 2-layered distributed structure. We evaluate the performance of the proposed schemes and compare it with that of another hierarchical scheme proposed by Wang (J.Z. Wang, A fully distributed location registration strategy for universal personal communication systems, IEEE J. Select. Areas Commun., 11(6) (1993) 850-860) and IS-41-based scheme. It is shown that the proposed schemes have reduced location management cost and that the cost is less affected by the increment of communication cost than the compared schemes.