Analysis and optimization of 4G long term evolution (LTE) network in urban area with carrier aggregation technique on 1800 MHz and 2100 MHz frequencies

Technology in sector communication is growth rapidly, which is marked by the increasing number of facilities offered, for example the growth of data, voice and video communication. The technology that can answer these communication demands is Long Term Evolution Adavanced (LTE-A) technology. To optimize the quality by using a combination of frequencies on LTE-A. This research comparing results of non-Carrier Aggregation (Non-CA) and Carrier Aggregation (CA). The frequency band that use existing frequency one of cellular operator in Surakarta 1800 MHz and the additional frequency for CA 2100 MHz. The result shows signal level value is above th threshold -80 dB increase from 89.51 to 96.04%. The percentage of reviewed RSRP if the value is above threshold -105 dBm increased from 83% to 95.44%. the parameter of distribution SINR in percentage values are above threshold above 5dB increased from 47.22% to 69.67%. The value of the mean throughput increase from 25.41 Mbps be 37.31 Mbps, with target KPI 12 Mbps. The number of rejected user in the network decreased from 2.2% to 0.6%. Parameters that are reviewed in this research can meet the target KPI.