SETTLING-TIME ANALYSIS IN TCP EXPEDITED LTE WIRELESS NETWORK USING MIXED SENSITIVITY CONTROL AND PID CONTROL TECHNIQUE

There has been increasing demand for faster and more reliable network in recent times. More demanding is a robust system that can adequately maintain good performance with 0% overshoot and ability to withstand disturbances due to traffic congestion and system uncertainties. The problems with LTE networks are Transmission Control Protocol (TCP) low speed implementation, which does not support the requirements of the Long Term Evolution (LTE) network. This work aims at reducing Settling-Time in TCP Expedited LTE wireless Network using Mixed Sensitivity control and PID Control Technique. In addition, to compare the two techniques with the aim of ascertaining the best technique to adopt in the TCP implemented LTE network. LTE network model performance-improvement was carried out using robust control technique like mixed sensitivity synthesis. The desired system response is converted into three adjustable weighting functions to develop a compensation function by mixsyn command. The LTE network improvement was also carried out using PID control technique with three control functions. It was observed that the mixed sensitivity synthesis achieved better performance characteristics with high network average speed of 0.00043 seconds of 0.1 seconds base value, which is 99.57% out of 0.1 seconds for a good system. This result indicates that the mixed sensitivity synthesis will address traffic congestion issue better than the PID control technique.