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Downlink resource allocation for data traffic in heterogenous cellular CDMA networks

Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSNPaper

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Publication date2004
Host publicationComputers and Communications, 2004. Proceedings. ISCC 2004. Ninth International Symposium on
EditorsA. Puliafito, S. Papavassiliiou
Place of PublicationNew York
PublisherIEEE
Pages436-441
Number of pages6
Volume1
ISBN (Print)078038623X
Original languageEnglish
Event9th IEEE International Symposium on Computers Communications (ISCC 04) - Alexandria, Egypt
Duration: 28/06/20041/07/2004

Conference

Conference9th IEEE International Symposium on Computers Communications (ISCC 04)
CountryEgypt
Period28/06/041/07/04

Conference

Conference9th IEEE International Symposium on Computers Communications (ISCC 04)
CountryEgypt
Period28/06/041/07/04

Abstract

In this paper using the dynamic pricing platform, a novel framework for downlink resource allocation in heterogeneous cellular CDMA networks is proposed. For each user we define a utility that is a function of channel status and delay condition of that individual user as well as network load status. The network utility is then defined as the summation of the users' achieved utilities. We solve downlink resource allocation problem through maximization of total network utility. This approach results in a sub-optimal base-station assignment scheme which-unlike previous work-is network optimal instead of cell optimal. We then show that optimal base-station assignment is a Multi-dimensional Multiple- choice Knapsack Problem (MMKP). Since MMKP is NP-Hard a polynomial-time suboptimal heuristic algorithm is then employed to develop an efficient base-station assignment.