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Optimal Traffic Sharing in GERAN

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Abstract

In a mobile communications network, the uneven spatial distribution of traffic demand can be dealt with by redefining cell service areas. When resizing cells, network operators often aim at equalizing call blocking rates throughout the network in the hope that this will maximize the total carried traffic in the network. In this paper, an analytical teletraffic model for the traffic sharing problem in GSM-EDGE radio access network (GERAN) is presented. From this model, a closed-form expression is derived for the optimal traffic sharing criterion between cells. Using this expression, it can be shown that balancing call blocking rate between adjacent cells is not the optimal strategy. Results show that using the optimal traffic sharing criterion instead of balancing blocking rates across the network can increase network capacity, even under restrictions in the cell resizing process.

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Abbreviations

CAC:

Call Admission Control

CDMA:

Code Division Multiple Access

FDMA:

Frequency Division Multiple Access

GERAN:

GSM-EDGE Radio Access Network

GOS:

Grade Of Service

GSM:

Global System for Mobile communications

EDGE:

Enhanced Data rates for GSM Evolution

HOC:

HandOver Control

OFDMA:

Orthogonal Frequency Division Multiple Access

TDMA:

Time Division Multiple Access

RRM:

Radio Resource Management

WCDMA:

Wideband Code Division Multiple Access

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Correspondence to Matías Toril.

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Luna-Ramírez, S., Toril, M., Fernández–Navarro, M. et al. Optimal Traffic Sharing in GERAN. Wireless Pers Commun 57, 553–574 (2011). https://doi.org/10.1007/s11277-009-9861-6

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  • DOI: https://doi.org/10.1007/s11277-009-9861-6

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