Performance analysis of scheduling policies for VoIP traffic in LTE-Advanced network

Resource allocation mechanisms are important in assigning all available resources in the network. Scheduling is one of the resource allocation mechanism which will determine the performance of the network. This paper provides the performance analysis on three different scheduling algorithms in the Long Term Evolution-Advanced downlink transmission system with realistic channel model for urban macro cell scenario. All scheduling algorithms are evaluated based on throughput, frame delay, packet delay variation and mean opinion score index of voice over internet protocol via simulation executed on OMNET++ based simulator. The maximum of carrier to interference ratio scheme provided the highest value of throughput and mean opinion score index among all schemes in the evaluated network. The scheme also provided the lowest value of frame delay and packet delay variation in the evaluated network scenario.