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English (United Kingdom)

Cell VS. System Admission Control Strategies for WCDMA Multicelluar Networks

Έτος: 2012
Τύπος δημοσίευσης: Περιοδικό
Journal: Communications in Information Science and Management Engineering (CISME) Volume: 2
Number: 6 Pages: 9-14
Month: June
ISSN: 2222-1859
The goal of the study presented in this paper is to investigate the capacity of Wideband Code Division Multiple Access (WCDMA) multicellular networks under two different Admission Control (AC) strategies (cell and system based). The system employs a fixed grid of beams (FGoB) for each cell up to the first tier of cells. Unlike other studies, intercell interference is modelled analytically with the help of large-scale system level simulations that include up to four tiers of cells around the central cell. Due to the increased complexity of the problem as there is high number of effective sectors and loading in cells, a grid-enabled WCDMA system level simulator has been developed executing independent Monte Carlo (MC) simulations in parallel. Simulation results show that there can be significant variations in capacity resulting from the differences in the interference suppression mechanism among the AC strategies. For 50% and 90% loading, the capacity with the system based AC can be more than 300% and 50% higher, respectively, compared to the capacity with the cell-based AC. This gain however comes at the cost of increased blocking probability.
Πλήρες κείμενο: CISME10413-20120621-142349-3344-1070.pdf