Abstract

Much advancement in Long Term Evolution (LTE) has been made as per 3GPP release papers. Release\n8/9 terminals were not capable of providing greater data speed and hence did not meet the International Mobile\nTelecommunications – Advanced (IMT A) requirements. Therefore, there was need to increase the downlink and uplink\ndata speed. Release 10 introduced a new feature in LTE called carrier aggregation in which different component carriers\nare aggregated in order to increase the overall bandwidth. In LTE-Advance, upto five component carriers can be\naggregated but commercial solutions use up to three component carriers thus providing a maximum downlink speed of\nupto 450Mbps. This paper provides an overview of carrier aggregation and its needs. For cell edge users, carrier\naggregation can be supported by enabling cross carrier scheduling which solves the problem of Inter Cell Interference.\nCarrier scheduling is enabled by eNodeb (eNB). In the later part of this paper, a simulation is discussed which provides\nunderstanding of calculation of various frequency parameters which are specified by 3GPP and also shows the plot of\nintra-band contiguous carrier aggregation which is commonly used.