ABSTRAKSI: Long Term Evolution (LTE) merupakan teknologi berbasis Internet Protocol (IP) yang mendukung transfer paket data dengan rate yang tinggi. Teknologi ini akan dapat memenuhi kebutuhan para user akan komunikasi paket data yang terus meningkat beberapa tahun belakangan.
Di sisi lain, user dapat bergerak dengan kecepatan tinggi dengan menggunakan alat transportasi apapun. Salah satu alat transportasi yang mempunyai kecepatan tinggi adalah kereta api, yang juga merupakan salah satu alat transportasi favorit penduduk Indonesia, khususnya di Pulau Jawa. Tentunya para user yang sedang menggunakan jasa transportasi ini membutuhkan layanan transfer data termasuk saat kereta melaju dengan kecepatan tinggi untuk memenuhi kebutuhan komunikasi mereka pada era LTE.
Dalam Tugas Akhir ini, telah dirancang jaringan macro cell yang dikhususkan di sepanjang jalur kereta api untuk menciptakan performansi jaringan LTE di dalam kereta api itu sendiri. Dengan memperhatikan aspek kecepatan, throughput, trafik, serta intensitas user di dalam kereta api didapatkan overlapping coverage agar handover dapat berjalan dengan sukses. Sehingga didapatkan rancangan macro cell yang sesuai untuk support high data rate bagi penumpang di kereta api. Hasil dari penelitian tugas akhir ini, menunjukkan bahwa jaringan LTE membutuhkan delay trafik sebesar 43 ms dan delay handover sebesar 89 ms. Dari delay tersebut didapatkan nilai overlapping coverage sebesar 10%. Nilai overlapping coverage hasil perhitungan tersebut, dibandingkan dengan skenario lain, yakni tanpa overlapping, 40% overlapping dan 100% overlapping. Hasilnya, jaringan tersebut mempunyai performansi yang paling optimal diantaranya level daya rata-rata mencapai -80,9 dBm dan 78% area ter-cover diatas standar level daya minimum yang dicakup oleh 19 sel dari studi kasus jalur kereta api Jakarta hingga ke Cirebon.
Kata Kunci : Long Term Evolution (LTE), macro cell, delay, overlapping coverage, handover.ABSTRACT: Long Term Evolution (LTE) is a technology based on Internet Protocol (IP) that supports high data rate transfer of packet data. This technology will be able to meet the needs of users data communication that rised in recent years.
On the other hand, the user can move at high speed by using means of transportation. One of the tools that have a high-speed transport is train, which is also a favorite means of transportation in Indonesia. Most of users who are using this transportation service requires the services of packet data also when the train drove at high speed to meet their needs of communication.
In this research, design of a macro cell network dedicated along the railway lines to create an optimal network performance of LTE on the train. The design will be conducted at a frequency of 700 MHz using Frequendy Division Duplexing (FDD) with 10 MHz of bandwidth. With due respect of speed, bitrate, traffic, and intensity of the user on the train, we will get overlapping coverage for handover that can be run succesfully at a high speed. The results of this research, shows that the LTE network requires traffic delay of 43 ms and the handover delay of 89 ms. From the system total delay was obtained value by 10% overlapping coverage. Compared to other scenarios, ie, without overlapping, 40% overlapping and 100% overlapping, this network has optimal performance which the average power level reaches -81.6 dBm, average SINR 5.5 dB, and 78% area cover was above the standard of minimum power level that covered by 19 cells for case study of Jakarta to Cirebon railroad.Keyword: Long Term Evolution (LTE), macro cell, delay, overlapping coverage, handover.