Concurrent online tracking of mobile users
SIGCOMM '91 Proceedings of the conference on Communications architecture & protocols
Mobile users: to update or not to update?
Wireless Networks
Minimizing the average cost of paging under delay constraints
Wireless Networks
Mobile user location update and paging under delay constraints
Wireless Networks
Querying in Highly Mobile Distributed Environments
VLDB '92 Proceedings of the 18th International Conference on Very Large Data Bases
Emerging mobile and personal communication systems
IEEE Communications Magazine
Teletraffic implications of database architectures in mobile and personal communications
IEEE Communications Magazine
IEEE Journal on Selected Areas in Communications
Design and evaluation of a replicated database for mobile systems
Wireless Networks
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The design of distributed databases (DDBs) destined to storeuser information is a key issue in third-generation mobile communicationsystems such as UMTS. In particular, the problem of determining the mostappropriate DDB architectures for UMTS is critical due to the anticipatedrequirements of high distribution and adaptability of information. Thispaper presents a model which allows different DDB architectures to beevaluated, in terms of query loads and average search times. The modelproposed puts no constraints on either the DDB structure arrangement or theuser position characterization. The paper also discusses a real, significantcase study, concerning a query operation arising from an access procedureperformed on the DDB of a communication network covering an urban area.