Performance Analysis of Long Term Evolution (LTE) Medium Access Control (MAC) Scheduler for Real-Time Heterogeneous Data Traffic

For enhancing the performance of mobile communication. The key attribute of Long-Term Evolution (LTE) is the capabilities to control and priorities bandwidth across users. It is the Medium Access Control (MAC) scheduler that provides LTE this capability. So that we can design LTE MAC scheduler for Real-Time (RT) heterogeneous traffic (video, voice and mixed) generated by mobile users. This heterogeneous traffic having with different QoS requirements so we need to fine tune the LTE MAC scheduler for various delay constraints and maintain the fairness in resource allocation. MAC scheduler reduces the Down-link (DL) transmission delay with the enforcement of quality of data transfer for N number of devices using open source NS3 simulator and also compare it with various performances of the Time Domain(TD) and Frequency Domain (FD) MAC schedulers. We got the best scheduler who is having less delay, high throughput and fair to all UEs for TD and FD version are known as TD-TBFQ and FD-TBFQ scheduler. LTE uses modulation technique which supports heterogeneous traffic known as Orthogonal Frequency Division Multiple Access (OFDMA). OFDMA splits data into small sub-carriers, on proximate frequencies, over a single channel. It is permitted to transfer more data than single carrier modulation techniques at a higher rate. It also handles phenomena like noise, multipath propagation or interference significantly.