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Perencanaan dan Analisis Fronthaul Microwave Menggunakan Spektrum Frekuensi 71 Ghz untuk Radio Access Network dengan Metode Drive Test 4G LTE Firmansyah Pandu Wibawa; Muntaqo Alfin Amanaf; Ade Wahyudin
Buletin Pos dan Telekomunikasi Vol. 17 No. 1 (2019): Juni 2019
Publisher : Centre for Research and Development on Resources, Equipment, and Operations of Posts and I

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17933/bpostel.2019.170104

Abstract

Di Indonesia, tidak semua daerah telah terintegrasi oleh jaringan 4G LTE dengan baik, sehingga memerlukan perencanaan 4G LTE yang tepat. Penelitian ini melakukan perancangan penambahan eNodeB baru dengan metode fronthaul microwave 4G LTE, dengan tujuan untuk memperbaiki bad coverage pada suatu area melalui peningkatan coverage dan kapasitas jaringan. Link fronthaul menggunakan frekuensi 71 GHz, penempatannya dengan menggunakan metode drive test untuk mencari bad coverage di Purwokerto Utara, Purwokerto Barat, dan Purwokerto Selatan. Hasil dari penentuan daerah bad coverage kemudian dibuat site hop berdasarkan site existing terdekat dengan daerah bad coverage tersebut. Dari hasil simulasi menggunakan Atoll 3.3.0, rata-rata kenaikan RSRP setelah ditambahkan fronthaul RSRP-nya, -91,7 dBm, naik 20%, dan CINR sebesar 13,95 dB, kenaikan sebesar 12%. Sedangkan untuk throughput, mengalami kenaikan setelah ditambahkan fronthaul, rata-rata menjadi 90,75 Mbps, dari 52,12 Mbps, naik 72%. Untuk simulasi link fronthaul microwave 71 GHz, level daya terima saat tidak terjadi hujan, sebesar rata-rata RSL -27,52 dBm, dan pada saat hujan, RSL turun, -58,17 dBm, dari ambang batas minimum -48 dBm. Untuk keandalan sistem, mendapat annual multipath availability pada 6 hop sebesar 99,999%, akan tetapi pada annual rain, availability rata-rata sebesar 99,90%. In Indonesia, not all regions have been integrated by the 4G LTE network, so it needs the optimal 4G LTE Planning. In this study, we plan the new eNodeB  with fronthaul microwave 4G LTE method to solve the bad coverage problem in certain area by increasing coverage and capacity network with this method. The fronthaul links uses 71 GHz frequency and the placement of this link uses the drive test method to look for bad coverage in the North Purwokerto, West Purwokerto, and South Purwokerto. The results of the bad coverage were then used as a hopping site based on the site closest to the area's bad coverage. From the simulation results using Atoll 3.3.0, the average RSRP increases after fronthaul RSRP added, -91.7 dBm, up 20%, and CINR by 13.95 dB, rose by 12%. While for throughput, increased after adding fronthaul, on average to 90.75 Mbps, from 52.12 Mbps, up 72%. For the 71 GHz fronthaul microwave  link simulation, the level of receiving power when there is no rain, RSL -27.52 dBm on average, and when it rains, RSL drops, -58.17 dBm, from the minimum threshold of -48 dBm. For system feasibility, the availability of annual multipath at six hops is 99.999%, but on average annual rainfall, availability is 99.90%. 
Comparative Analysis of Microwave Link Using Space and Hybrid Diversity Configuration on Mountain Topography Area Ade Wahyudin; Alfin Hikmaturokhman
Buletin Pos dan Telekomunikasi Volume 19 Issue 1 (2021)
Publisher : Centre for Research and Development on Resources, Equipment, and Operations of Posts and I

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17933/bpostel.2021.190104

Abstract

The development of information and communication technology (ICT) in Indonesia is increasing rapidly every year. However, this increase is not comparable to the distribution of technology in remote areas, especially areas with mountainous contours. So it takes a proper backhaul network design to deploy telecommunication services in remote areas. Microwave transmission technology is widely used as a backhaul network in mountainous areas because it can reach areas that are difficult to reach by fiber optic. However, multipath fading becomes a problem in microwave communication, so to solve it, we use the diversity configuration approach. Space diversity configuration is the system most often used, but in more extreme conditions it can use a hybrid diversity configuration which is a combination of space and frequency diversity. In this study, we designed and compared the performance of two types of diversity configurations, namely space and hybrid diversity in cross-mountainous areas using simulation software Pathloss 5.0. Before comparison, these paths were tested with a point-to-point configuration to assess microwave communication performance without diversity. Based on the simulation, the resulting cross-mountain microwave communication performance using point-to-point configuration results in 99.98179% availability and 5742.79 seconds unavailability in one year, these values are still far from the ITU-T G.821 standard, namely 99.99% availability. In the configuration using Space Diversity, the quality has increased, but it cannot meet ITU standards because it is only capable of producing 99.98333% to 99.98943% availability or comparable to un-availability for 5255.53 to 3332.48 seconds/year. Meanwhile, the hybrid diversity configuration can produce a performance that meets ITU standards with an availability of 99.99122% or equivalent to un-availability for 2769.79 seconds per year.