Simulation of a Fault Tolerant Mobile Telecom Network

Abstract

The mobile telecom industry currently represent the fastest growing sector with emphasis on mobile data services. In general, the flexibility provided by mobility has satisfied users of current wireless networks, despite the extraordinary success of the cellular mobile telecommunications industry. However, the industry is still encountering various problems such as frequent call drops and lack of or inadequate service coverage areas. This paper discusses the simulation of a telecom network that is fault tolerant based on the failure scenarios examined. Two mobile networks were designed and simulated for fault tolerance. The first design is a mobile network connected directly to a SGSN (Serving GPRS Support Node) to serve as a non-fault tolerant mobile network. The second design adds a base station sub-system (BSS) into the network to form the fault tolerant design. Various parameters were used to measure the effectiveness of the designed networks including queuing delay, received power and the received throughput as the base station controller routes the packets from the mobile station to the SGSN and the packets from the SGSN to the receiving station. Our simulation results indicate that the addition of BSS increases the efficiency and the effectiveness of a mobile telecom network