Analisis Jaringan CDMA 2000 1x Evolution Data Only (Evdo) Terhadap Kualitas Layanan Data di PT. Telkom Flexi Yogyakarta

PT. Telkom Flexi Yogyakarta has been providing 3.5G internet data services using CDMA 2000 1x EVDO (Evolution Data Only) standard with a speed of 3.1 Mbps. The problems occur when many customers are accessing internet simultaneously, the Base Transceiver Station (BTS) of CDMA 2000 1x EVDO has not been evenly distributed in Yogyakarta, and the area has high rise building and the high trees that cause the speed of internet access decrease. Therefore research is needed to analyze the CDMA 2000 1x Evolution-Data Only (EVDO) on the quality of data services in PT. Telkom Flexi, Yogyakarta. The results which obtained from the research show two BTS with bad throughput, those are BTS UGM and BTS MRICAN. The value of throughput is less than 76 kbps. Causes of poor throughput results are Access Terminal (AT) around outside of the coverage of the BTS. BTS UGM coverage calculation results is about 2.32 km, but the area is at a distance of 2.5 km, while the calculation of coverage BTS MRICAN is about 1.94 km, but the area is at a distance of 2.5 km. The other causes are interference from BTS JOMBOR againts BTS UGM and BTS BABARSARI againts BTS MRICAN. The interference cause two PN to handle bad areas on the border of base stations. Average drop calls and CSSR yield, which obtained on both the BTS are bad. Drop call results of BTS UGM in November 2012 is about 6.286% and BTS Mrican about 10.668%. While in December 2012 the results of BTS UGM is approximately 4.392% and BTS Mrican about 7.772%. CSSR results in November 2012, approximately 8.914% for BTS UGM and BTS Mrican is approximately 90.44%. While in December 2012, the results of BTS UGM is approximately 91.11% and approximately 93.14% for BTS MRICA