A TRAFFIC SCHEDULER FOR RADIO RESOURCE MANAGEMENT OF LONG TERM EVOLUTION –ADVANCED (LTE-A)

Abstract

The ever increasing subscriber’s demand for higher data rates pursued International Telecommunications Union (ITU) to define future mobile communications standard named LTE-A to provide higher data rates up to 1 GBPS. With the development of radio access techniques, the radio resource is becoming insufficient. Therefore, it is turning out to be a vital issue that how should the demands for higher data rates with limited resources is met for the evolving 4G network. In this paper, we present a traffic scheduler to distribute the radio resource in an efficient and fair manner according to the priority and QoS requirements of the incoming traffic. It allocates the system resources according to CQI parameters defined in the standard. Apart from allocating resources it also defines preemption rules for higher priority traffic. The idea is to queue the requests coming from several mobile stations according to their service groups. The purpose of dividing the service classes into groups is to decide whether a particular service group can get resources that were assigned to another service group. The results show the fair distribution of resources satisfying user’s requirement and achieving higher system throughput.