Informatics Publishing Limited

Abstract

This paper is an overview assessment of the availability (A) of Global Services Mobile Communications (GSM) of the six geopolitical zones (North West, North East, North Central, South West, South East and South South) of Nigeria in the Sub-Saharan African Continent. We approach the problem of Quality of Services (QOS) with Unavailable Second (UAS) constraint from the network operator’s perspectives. The ratio of measured availability to unavailable seconds (UAS) assessment method measures the network installed capacity, base stations and active voice subscription, range of operation of the packet optimized optical transport network solutions. The choice of a hybrid network gives us a bird-eye view of the IP only End-to-End Transport layer due to its complete transparency. The five-year assessment on the coverage range with special consideration given to factors like zones of the country, environment and base stations where it is deployed, active voice subscription and internet services. The results reveals that the operations of the major giants are in order [MTN, GLOBACOM, ETISALAT and AIRTEL] over the past five years within a Sub-Saharan African Environment.

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