Some NP-complete problems in quadratic and nonlinear programming
Mathematical Programming: Series A and B
Elements of information theory
Elements of information theory
Genetic Algorithms
Microwave Mobile Communications
Microwave Mobile Communications
Single-cell forward link power allocation using pricing in wireless networks
IEEE Transactions on Wireless Communications
Two-cell power allocation for downlink CDMA
IEEE Transactions on Wireless Communications
Utility-based power control for a two-cell CDMA data network
IEEE Transactions on Wireless Communications
An overview of air interface multiple access for IMT-2000/UMTS
IEEE Communications Magazine
CDMA/HDR: a bandwidth efficient high speed wireless data service for nomadic users
IEEE Communications Magazine
Fundamental design issues for the future Internet
IEEE Journal on Selected Areas in Communications
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This paper introduces a utility-based radio resource management technique in multicell wireless packet networks. In terms of allocation of base station (BS) downlink transmit power and assignment of resource to users in each cell, we formulate a problem of maximizing system utility which is defined as the sum of cell utilities. The problem, however, is not solvable due to its non-convex property. Thus, we propose a heuristic algorithm based on an intuition obtained from analyzing a simple two-cell problem. Though the heuristic approach also incurs signaling overhead for power coordination between neighboring base stations, it is much less than that of the original approach. Simulation results show the performance of our proposed algorithm compared with two competitive schemes: optimal and maximum power allocation schemes. As expected, the optimal allocation scheme shows the best performance but can not be employed in a real network due to intractable complexity. Our heuristic algorithm performs reasonably well with very low complexity.