Combinatorial optimization: algorithms and complexity
Combinatorial optimization: algorithms and complexity
The GSM System for Mobile Communications
The GSM System for Mobile Communications
Computers and Intractability: A Guide to the Theory of NP-Completeness
Computers and Intractability: A Guide to the Theory of NP-Completeness
Adaptive Channel Allocation for Cellular Communication Systems
ISCC '98 Proceedings of the Third IEEE Symposium on Computers & Communications
Channel assignment schemes for cellular mobile telecommunication systems: A comprehensive survey
IEEE Communications Surveys & Tutorials
Modeling techniques for large-scale PCS networks
IEEE Communications Magazine
Handover and channel assignment in mobile cellular networks
IEEE Communications Magazine
IEEE Journal on Selected Areas in Communications
Packet reservation multiple access in a metropolitan microcellular radio environment
IEEE Journal on Selected Areas in Communications
Wireless Personal Communications: An International Journal
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A fundamental problem in cellular communications systems is the adaptation of the frequency allocation to the traffic fluctuations. Traffic adaptation may be achieved by a computationally efficient solution to the following problem: ''Given the radio spectrum available, the cell structure, the current traffic conditions, and an already established allocation of frequencies to cells, find a new optimal allocation that is more suitable for handling the current traffic conditions, taking into account the previous allocation and subject to the restrictions arising from the interference conditions''. In this article, this problem is formally defined, optimally formulated and solved in a computationally efficient manner. The results provided demonstrate a significant increase in the efficiency with which the available spectrum is utilised, using as a basis for comparison legacy frequency allocation schemes.