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An Overview of Congestion Relief Methodologies in GSM Network

TCH (Traffic channel) congestion is one of the key performance indicators (KPI) which influence the network performance and customer satisfaction in live GSM network The degree of TCH congestion in the network results in large number of TCH blocking which greatly affects the subscriber satisfaction and revenue of the service provider. The available congestion relief methodologies such as cell splitting, aggressive frequency reuse pattern, microcells and expanding frequency band depend on time and cost factor for implementation. A hybrid model to reduce TCH congestion by balancing the traffic between high and low utilized cells of live GSM network is proposed. The model depends on the radio parameters such as CBQ (Cell Bar Qualify) RXACCMIN ( Receive Access Minimum) and TILT which contributes to balance the traffic and maintain congestion level of the network within specified limit.