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ABSTRACT
Unexpectedly, the level of patronage being experienced in Global System for Mobile Communication (GSM) in Nigeria is overwhelming. This is as a result of freedom of calling from anywhere at any time and clarity of the voice enjoyed in GSM since it is on a digital technology platform. This has brought a lot of congestion in the network resulting in poor services by the operators. Congestion remains a major challenge to telecommunications service provision both to the service providers as well as the subscribers. In this work, an attempt was made to determine the causes of congestion and evaluated congestion control mechanisms adopted by service providers in Nigeria using GLO Nigeria as a case study. This has brought a lot of congestion in the network resulting in poor services by the operators. This research has developed some management algorithms for the management of the congestion experienced in the GSM network in Nigeria. When there is congestion, block time sharing, dynamic allocation without time slicing, dynamic allocation time slicing with signal sensing, frequently recent call allocation, and priority allocation algorithms were developed to manage the congestion. As the number of subscriber’s increases, so traffic continues to grow, then these models (Multiband, Cell splitting and Microcell) can be considered in conjunction with the above step. This research work has been dedicated to use cell splitting to improving the capacity of a cell by applying the Relay theory which cover the use of Erlang B formula calculator to calculate the call blocking probability of a cell, the current and Target Grade of service, and also using the Fixed channel Allocation to assignment the number of channels gotten from the Relay theory to the new Micro cells developed. All these steps above should be implemented at every Base Transceiver Station, BTS.
