The Jakarta–Surabaya high-speed train kept its passengers connected throughout the journey. This research aimed to design an LTE network with access points in train units, utilizing a decentralized MSC architecture, with two MSCs located at each end of the train route. Additionally, real-time mobile transmission was implemented using FO-RF systems. Technical evaluations showed that one-way transmission delays along the FO–RF path ranged between 50.17 ms and 60.23 ms, with round-trip delays consistently remaining below the LTE threshold of 150 ms. Furthermore, optimized intra-carriage forwarding delay for onboard users was around 8 ms, ensuring performance consistency across user experience. The optimizations within the network showcased measurable performance gains, as displayed by the improvements in throughput of 15.73%, RSRQ by 12.4%, and RSRP by 17.42%. Moreover, even in scenarios involving users with high mobility and dynamic movements, the user experience, along with QoS, improved substantially, with latency, jitter, and packet loss decreasing by 90.57%, 86.81%, and 74.19%, respectively. An economic assessment of the system revealed an NPV of IDR 333 billion, an IRR of 17.87%, and a payback period of under one year, implying feasibility. With the results from the assessment, it was inferred that the implementation of LTE FO-RF was beneficial from both a technical and economic perspective for Indonesia’s high-speed train communications infrastructure.

Fiber roll-outs in Indonesia’s highland villages are hindered by steep terrain and low revenue potential. This paper evaluates a hybrid back-haul combining 780 nm Free-Space Optics (FSO) with 18/23 GHz microwave and a cold-standby switch triggered by a Bit-Error Rate (BER) threshold. Simulations show FSO maintains BER $\leqslant 10^{-6}$ up to 9.5 km in clear weather but fails in fog, while microwave performs under fog but degrades in heavy rain. Considering Dalisodo’s climate ($\approx 4 0 \%$ clear, $60\%$ rain/fog), the hybrid scheme preserves link availability by switching to microwave during wet seasons. A 10-year cash-flow model shows negative NPV and IRR under conservative adoption, but becomes viable with higher uptake and ARPU. The hybrid FSO/microwave design meets technical availability targets for rugged tropical terrain but requires subsidies or business model adjustments for economic viability.

This research explored the application of 4.0 technology at Telkom University Landmark Tower (TULT) through the incorporation of Passive Infrared (PIR) sensors and Smart Switch to optimize energy efficiency in faculty offices. In response to the substantial energy usage of TULT particularly in lighting, an automated system was designed to control lights based on occupancy. PIR sensors detected motion to switch lights on or off when needed, while Smart Switch facilitated remote monitoring and control via a cloud-based platform. The test results showed that the system effectively minimized energy consumption, followed green and smart building standards, and supported the sustainability objectives of TULT.

This research titled "Designing Terrestrial Infrared Free Space Optics Communication for Urban Connectivity: MRT Indonesia" explores the application of Free Space Optics (FSO) technology in the Mass Rapid Transit (MRT) transportation system in Indonesia. Utilizing 16-QAM modulation and MIMO antennas, this study demonstrates that FSO can provide efficient and reliable communication, even in challenging weather conditions. Solutions for curved routes or those without Line of Sight (LoS) are also identified, including the use of FSO, optimal route selection, and the installation of repeaters or relay stations. The benefits resulting from the implementation of this technology include fast and reliable connectivity, flexibility in route adjustment, and enhanced security and privacy for passengers.

The use of ground tank constructed by Telkom University for Rainwater Harvesting (RWH), is limited to environmental maintenance due to concerns regarding the quality of water in the underground tank. Therefore, this research aims to develop a remote monitoring device that uses Internet of Things (IoT) technology to monitor the pH, water surface, submerged materials, and water clarity levels in ground tank. To achieve the requirements, pH, ultrasonic-based volume, Total Dissolved Solids (TDS), and Turbidity sensors were selected due to the IoT connectivity. The enabling device, namely the ESP 32 microcontroller and Blynk platform were installed on monitoring dashboard on a tablet computer with 4GB of RAM. The result showed that calibration of each sensor had good accuracy, except for the Turbidity sensor due unavailable materials. In conclusion, the RWH monitoring system is suitable for use.

The growing demand for handling sensitive data and high-bandwidth applications has made Data Center Interconnection (DCI) very important, as it provides high-bandwidth connectivity to improve efficiency. To address the increasing need for reliable, high-performance data transport, experts are evaluating the performance of Dense Wavelength Division Multiplexing (DWDM) integrated with Reconfigurable Optical Add-Drop Multiplexers (ROADM) system. Therefore, this study aimed to determine the optimal Optical Signal-to-Noise Ratio (OSNR) required for DWDM-ROADM system to transmit a 400 $\mathrm{Gb} / \mathrm{s}$ client interface operating at an $800 \mathrm{~Gb} / \mathrm{s}$ line-side rate. System configuration used a channel spacing of 150 GHz at a wavelength of $\mathbf{1 9 3. 1 5 0} \mathbf{~ T H z}$. Furthermore, OSNR performance evaluation was carried out by analyzing noise levels from Variable Optical Attenuator (VOA) and pre-Forward Error Correction (pre-FEC) setting. The results showed that DWDM-ROADM system required OSNR sensitivity value of $\mathbf{2 3. 1 5} \mathbf{d B}$ to ensure reliable $400 \mathrm{~Gb} / \mathrm{s}$ traffic transmission. This value was achieved at pre-FEC bit error rate (BER) of 0.02 and VOA attenuation of 8 dB, while capable of transmitting $400 \mathrm{~Gb} / \mathrm{s}$ of traffic. System performance was more stable at VOA level of 8 dB compared to 6 dB, where the traffic experiences errors at BER $1.63 \times 10^{-11}$. Finally, this study proposed a new test methodology for determining the minimum OSNR required for DWDM-ROADM system to reliably transmit $400 \mathrm{~Gb} / \mathrm{s}$ of traffic.

Fiber to the Home (FTTH) is often used to satisfy the increasing bandwidth and access speed requirements associated with the rapid growth of telecommunication technology. In this case, a few concerns such as continuous installations on poles, cables, underground grids, and the exclusive business model have been observed in the expansion of Internet Service Providers (ISPs) to some property areas. A multi-provider solution is available on Gigabit Passive Optical Network (GPON) technology through the integration of several ISPs into the FTTH sharing infrastructure. Therefore, this research aimed to provide a techno-economic analysis of FTTH-GPON sharing infrastructure developed and invested by property developers. The results showed that several ISPs could be integrated through the application of Virtual Local Area Network (VLAN) in FTTH-GPON sharing infrastructure. The investment of property developers was also projected to be profitable in the long run despite the significant initial CAPEX. Moreover, the 10-year projection for a property with low occupancy showed feasible revenue growth compared to not investing. This was confirmed by the NPV of 14,978 USD, the IRR was 12.21%, and the payback period was 7 years. The What-If Scenario Analysis also showed that the occupancy rate was the primary source of investment uncertainty. As a neutral operator, the property developers could set a minimum Average Revenue per User (ARPU) price regulation to ensure fair competition and prevent a “pricing war”.

This paper discusses the water management conducted by Telkom University, including the fundamental considerations to be taken into account, the implementing organization, the design methods for rainwater systems, and practical experiences in constructing Rainwater Harvesting systems. The management is aware of the conditions and situations related to clean water users, estimates of clean water requirements, potential water sources, and the campus environmental situation. Based on various studies and supported by rainfall data from the Meteorology, Climatology, and Geophysics Agency, a simple calculation was used to derive the design of the Rainwater Harvesting system, which was subsequently implemented. There are several lessons learned from this implementation, including the need for improvements in the foundation structure of soak pits, recommending the construction of ground tanks during the dry season, and the flexibility of ground tank size depending on the availability of funds The abstract should state briefly the purpose of the research, the principal results and major conclusions.

Lokasi masyarakat sasar terletak di desa Bojongsari ini hanya berjarak 2,5 km dari kampus Universitas Telkom. Dengan sinergi antara perguruan tinggi dengan perusahaan pemberi dana CSR, banyak solusi yang bisa dilakukan untuk menyelesaikan berbagai masalah yang terjadi di masyarakat. Program Pengabdian kepada Masyarakat (PkM) skema kolaborasi multi-years di Madrasah Darul Muttaqin Al-Insani, telah berhasil mengubah paradigma dari lembaga pendidikan non-formal biasa menjadi luar biasa, yang ditandai dengan banyaknya prestasi yang diraih baik oleh individu siswa maupun oleh lembaganya. Untuk mencapainya, perlu diskusi panjang untuk melahirkan perencanaan yang matang, tahapan solusi yang logis dalam rentang 4 tahun (2019-2022), serta memadukan kemampuan finansial donatur dan kompetensi personil yang dilibatkan sesuai dengan masalah yang disolusikan.

The development of 10-Gigabit-Capable Symmetric Passive Optical Network (XGS-PON) standardization is done based on Regulatory Impact Analysis (RIA) method. This research implements several steps, such as definition, identification, assessment, and best option selection. The selected result for XGS-PON standardization in Indonesia is the technical requirement option 1. The option has the most benefits based on Cost-Benefit Analysis (CBA) combined with Plus Minus Implication (PMI). It offers a reference for a comprehensive device conformance assessment covering: 1) Compatibility of PON port interface value with the standard; 2) The ability of Layer 2 functions such as Virtual Local Area Network (VLAN) and Jumbo Frame; 3) Quality of Services (QoS) capability with VLAN-based parameters and Differentiated Services Code Point (DSCP) mapping to priority; 4) Ability to deliver triple-play services (Video, Voice, Internet). The RIA method offers confidence for the Indonesia Government to implement standardization for Qualify XGS-PON. Implementing certified XGS-PON is expected to support ubiquitous networks as a form of protection for the Indonesian people. This research is expected to find the proper method for making a better decision for good governance.

This study evaluates the implementation of a scheduling mechanism in traffic handling to support Quality of Service (QoS) in the network. The QoS aims to provide better network service by allocating service application traffic resources to an excellent user experience. The purpose makes QoS capability very important in regulating the technical specifications for 10-Gigabit-capable Symmetric Passive Optical Network (XGS-PON) equipment in Indonesia. Its main scope is the ability of XGS-PON to control how much bandwidth is in the network, how it is treated, and how classes can use based on Weight Round Robin (WRR) and Strict Priority (SP) priorities. In addition, XGS-PON shall map Differentiated Service to 802.1p priority along with the service class attributes. Performance evaluation is conducted by introducing a test method for the traffic handling mechanism on the scheduling mechanism. The test results show that XGS-PON can control traffic with the highest and lowest priority to pass bandwidth with 10% and 40% of the total traffic that has been set. In addition, XGS-PON can manage to pass 100% bandwidth only at the highest or lowest priority. Furthermore, the Different Service mapping to priority capability test result shows that XGS-PON can map eight types of service classes (BE, AF11, CS2-7) into eight 802.1p priorities. Thus, XGS-PON support QoS traffic handling mechanism WRR, SP, and Differentiated Service mapping towards priority following the Technical Report Broadband Forum recommendations and can be implemented in regulations and standardization in Indonesia.

Visible Light Communication (VLC) is the one of technologies used for 6th generation of telecommunications (6G), because it has a wide frequency spectrum, higher speed and safety. We have conducted an experiment using a prototype to transmit sound. Measurements were made by changing the receiving distance from 30 cm up to 300 cm in increments of 30 cm. We also shift the receiving device, so that it forms an angle 0° up to 30°. This study analyzes the extent of changes in distance and angle to the measurement results. We use a Lux meter measurement of the light intensity received by the receiver. In addition, we also measure the ratio of the sound sent to the received by measuring dB meter. From the results of extensive testing, we got the result that the farther distance, then the sound quality is getting lower. For the 0° angle obtained a propagation distance limit of up to 250 cm, 15° angle 200 cm away and 30° angle up to 150 cm. In addition, we also found that the magnitude of the angle shift decreased the intensity of the received light.

Badan Pusat Statistik (BPS) menyampaikan bahwa jumlah penumpang kereta api mengalami kenaikan 1,1% setiap tahunnya. Dalam waktu dekat ini, pemerintah akan membangun proyek kereta cepat Jakarta – Surabaya. Operator jaringan seluler hendaknya dapat menyediakan kebutuhan pelanggan. Salah satu faktor penting untuk mendukung jaringan seluler adalah jaringan backhaul yang mampu membawa trafik data tersebut sesuai dengan standar teknologi jaringan seluler LTE. Tugas Akhir ini merancang jaringan backhaul fiber optik yang terdiri dari jaringan backbone, akses, dan Evolved Packet Core (EPC) untuk penumpang kereta dengan kecepatan maksimal 160 km/jam dari stasiun Cepu ke stasiun Pasar Turi Surabaya. Teknologi backbone optik yang digunakan adalah SDH STM-64 Dense Wavelength Division Multiplexing (DWDM), teknologi jaringan akses menggunakan XG-PON1, dan teknologi core network LTE menggunakan EPC. Jaringan backbone optik yang telah ada disepanjang rel kereta dapat digunakan untuk menghemat biaya. Rancangan yang dibuat memperhatikan parameter delay, rise-time budget, power link budget, Q-factor, SNR, dan BER, sesuai standar ITU-T G.987, ITU-T G.691, ITU-T G.696.1, dan 3GPP TS23.203. Masing – masing elemen EPC yang dibutuhkan seperti HSS, MME, S/P-GW adalah satu buah berada dalam satu EPC yang sama. Parameter delay terpenuhi dengan nilai pada link terjauh sisi downstream yaitu 1,707611 ms, sedangkan pada sisi upstream 1,707562 ms. Parameter terendah LPB bernilai -21,62 dBm, Q-factor 7,62644, BER 1,18 x 10-14 dan RTB 0.0460977867828442 ns untuk link akses downstream. Sedangkan parameter terendah untuk link akses upstream LPB -23,873 dBm, Q-factor 7,00755, BER 1,21 x 10-12, dan RTB 0.046097828 ns. Pada link backbone nilai parameter terendah untuk LPB -23,502 dBm, Q-factor 7,93476, BER 1,04 x 10-15 dan RTB 0.046097939 ns. Kata kunci : Backhaul, Backbone, EPC, DWDM, XG-PON1, LTE, STM-64.

Abstract. The province of East Kalimantan has good market potential, due to the relocation of Indonesia’s capital city to East Kalimantan. Based on the results of population projections, it is estimated that in 2040 the population in East Kalimantan will reach 189.917.791 inhabitants. Unfortunately, there is only one landing station that connects East Kalimantan with the internet network, the Balikpapan landing station. This study conducted an analysis of the placement of landing station based on potential internet users, geographical conditions, network feasibility based on the value of Bit Error Rate (BER), Quality Factor (Q-Factor), Power Received, and business feasibility by the Net Present Value (NPV), Internal Rate of Return (IRR), and Payback Period (PBP). The technical simulation result showed BER value 3,94E-32, Q-Factor 11,7147, and power received -18,8614 dBm. Besides, for Capital Budgeting simulation results show that it takes 4 years 3 months for the PBP, NPV > 0 and, IRR of 31 %. Keywords: Submarine Cable Network, Net Present Value, Internal Rate of Return, Payback Period, Indonesia Global Gateway (IGG).

Abstrak Kereta merupakan transportasi yang paling banyak digunakan untuk proses mobilisasi pekerja dari satu kota ke kota lainnya. Hal ini disebabkan laju kereta yang cepat sehingga waktu perjalanan menjadi lebih singkat. Efisiensi waktu selama perjalanan sangat dibutuhkan agar tetap produktif, khususnya bagi pekerja yang membutuhkan layanan internet. Pengadaan layanan internet dikereta perlu mempertimbangkan faktor reliabilitas baik dari aspek fisik maupun jaringan. Penelitian ini melakukan analisis terhadap reliabilitas access point dari aspek fisik dan jaringan. Analisis aspek fisik dilakukan berdasarkan kriteria yang ditetapkan oleh IEC 60077, sedangkan analisis pada aspek jaringan dilakukan berdasarkan nilai QoS yang dimiliki setiap access point. Skenario pengujian QoS dilakukan dengan meletekan access point ditengah gerbong kereta, dengan jumlah user 20, 30, 40, dan 52. Simulasi QoS dilakukan menggunakan Network Simulator 3.26 dengan memasukkan parameter tambahan berupa redaman sebesar 17 dB sebagai akibat yang ditimbulkan dari material pada gerbong kereta. Berdasarkan dua aspek tersebut, dapat diketahui bahwa access point terbaik jika ditinjau dari faktor nilai stres dan reliabilitas yaitu Huawei AP9131DN dengan nilai stres sebesar 125 dan reliabilitas sebesar 99.99921875%. apabila ditinjau dari faktor QoS, access point terbaik yaitu Teldat APR222n dengan nilai throughput sebesar 43.8059275 kbps, nilai delay sebesar 74.41269 ms, dan nilai jitter sebesar 7.27849 ns. Kata kunci : Reliabilitas, Stres, Access Point, Delay, Jitter, Throughput, Packet Loss Abstract Train is the most widely used transportation for the process of mobilizing workers from one city to another. This becomes even shorter. Time efficiency during the trip is needed so that it remains productive, especially for workers who need internet service. The procurement of internet services must consider the reliability factors from physical and network aspects. This research analyzes the reliability of access points from physical and network aspects. Analysis of physical aspects is carried out based on the criteria determined by IEC 60077, while analysis on the aspect of the network is carried out based on the QoS values required for each access point. The QoS testing scenario is done by erupting the access point in the middle of the train car, with a number of users 20, 30, 40, and 52. QoS simulations are carried out using Network Simulator 3.26 using parameters adding attenuation of 17 dB as a result of material on the train cars. Based on these two aspects, the best access point can be known if viewed from the stress and reliability value factors, namely Huawei AP9131DN with a stress value of 125 and reliability of 99.99921875%. It is estimated that in terms of the QoS factor, the best access point is Teldat APR222n with a throughput value of 43.8059275 kbps, a delay value of 74.41269 ms, and a jitter value of 7.27849 ns . Keywords: Reliability, Stress, Access Point, Delay, Jitter, Throughput, Packet Loss

Kebutuhan akan layanan broadband di Indonesia meningkat dengan signifikan. Menurut APJII masyarakat yang mengakses internet sebesar 54,67 % di Indonesia. Pengembangan teknlogi komunikasi optik salah satunya adalah Radio Over Fiber (RoF). Objek penelitian ini menggunakan frekuensi 10 dan 15 GHz yang digabungkan dengan teknologi WDM dan SCM pada site operator “3” sebagai rujukan yang berada di kota Tangerang. Parameter yang disimulasikan adalah BER, Q-factor dan keluaran sinyal di output. Berdasarkan hasil analisis diperoleh nilai parameter kualitas Q-Factor pada jaringan 10 GHz adalah 21,721, dan pada jaringan 15 GHz adalah 938867. Nilai BER pada jaringan 10 GHz adalah 5.3557 x 10-105 dB, dan pada jaringan 15 GHz adalah 2.55134 x 10-21 dB.

Abstrak Jurnal ini mendiskusikan analisis coverage dan handover jaringan LTE untuk kereta cepat Jakarta-Surabaya. Penelitian dilakukan dengan mengadopsi teknologi LTE yang dibangun koridor rel kereta untuk mendukung kecepatan 160 km/jam pada daerah tinjauan track Jakarta-Cirebon. Perhitungan radius cover dan jarak antar site menggunakan frekuensi 900 MHz dengan model propagasi Okumura-Hatta. Langkah sebelumnya adalah melakukan kalkukasi path loss uplink dan downlink dengan nilai link budget. Besar radius adalah 1,86 km berdasarkan model propagasi yang digunakan. Dengan wide area 219 km2 diperoleh jumlah site uniform sebanyak 39. Kondisi rel yang berbeda-beda mempengaruhi jarak antara rel dengan site existing yang digunakan. Pada kasus tersebut perlu dilakukan validasi dengan menggunakan radius site existing sesungguhnya. Perhitungan validasi membutuhkan jarak overlapped saat kereta melakukan handover. Hasil simulasi X2 handover menggunakan NS3 diperoleh nilai rata-rata delay transmission data sebesar 15,14 ms. Dari nilai tersebut diperoleh jarak overlapped sebesar 600m. Dengan menggunakan teori Pythagoras diperoleh jumlah site sebanyak 47. Setelah melakukan simulasi menggunakan software Atoll, analisis coverage by signal level atau RSRP dan SINR telah memenuhi standar yang digunakan. Kata kunci : Kereta Cepat 160 km/jam, LTE, Coverage, Handover. Abstract This journal discusses the analysis of the coverage and submission of the LTE network for the JakartaSurabaya high speed train. The research was carried out by adopting LTE technology that was built on the railway corridor to support speeds of 160 km / h in the Jakarta-Cirebon track review area.. The radius calculation includes and the distance between sites using the 900 MHz frequency with the Okumura-Hatta propagation model. The previous step is calculate the path loss uplink and downlink with the value of the link budget. Value of radius cover is 1.86 km based on the propagation model used. With wide area of 219 km2, there were 39 uniform sites. Different rail conditions differ between rails and existing sites used. In this case, validation is needed by using the existing site radius. Validation calculations require overlapping distances when delivering trains. The X2 handover simulation results using NS3 obtained an average value of data transmission delay of 15.14 ms. From this value overlapping distance of 600m is obtained. By using Pythagoras theory, there are 47 sites. After calculating using software Atoll, analysis of coverage with signal level or RSRP and SINR has obtained the standard used. Keywords: High Speed Railway 160 km/jam, LTE, Coverage, Handover

Abstrak Kejadian tabrakan (collision) dalam proses pembacaan data pada RFID dihasilkan dari pembacaan tumpukan RFID tag dalam waktu bersamaan, sehingga proses pembacaan data RFID mengakibatkan pembuangan bandwidth dan meningkatkan waktu tunda identifikasi (delay). Hal ini sangat mengganggu dalam proses pembacaan data. Fasilitas layanan RFID digunakan oleh Gedung Tokong Nanas Universitas Telkom. Gedung ini memiliki jumlah lantai dan kelas terbanyak dibandingkan gedung-gedung lainnya, sehingga memiliki kepadatan trafik yang lebih besar. Permasalahan saat ini adalah durasi waktu tunggu identifikasi dan collision saat melakukan tapping ketika trafik pada Gedung Tokong Nanas dalam kondisi padat. RFID reader dalam mengatasi collision harus menggunakan protokol anti-collision sehingga dapat mengatur pembacaan dan penulisan data pada RFID tag. Untuk menurunkan waktu tunda identifikasi dan mengurangi kemungkinan terjadinya collision, diperlukan analisis parameter delay pada jaringan RFID dengan menggunakan algoritma power of two. Berdasarkan analisis power of two 𝟐 𝟖 = 𝟐𝟓𝟔 sebagai titik acuan dari puncak collision yang terjadi pada KU3.02 sampai KU3.09 yang didapatkan hasil pengolahan data sebanyak 126 collision. Kemudian dengan uji perbaikan kinerja sistem dengan melakukan perbandingan delay pada skema Slotted ALOHA didapatkan sebesar 48 ms dan pada algoritma power of two delay yang didapatkan sebesar 0,1 ms. Dari hasil perbandingan delay tersebut dapat disimpulkan bahwa terjadi perbaikan delay sebesar 99,79% pada jaringan RFID di Gedung Tokong Nanas. Kata Kunci : Delay, Anti-Collision, power of two, tapping, RFID. Abstract Collision event during data reading process on RFID is caused by stacking RFID tag data reading at the same time, this situation creates wasting bandwidth and increases delay. This collision situation has negative distraction on data reading processes. RFID services is being implemented at Tokong Nanas building by Telkom University. This building has the most numbers of floors and classes compare to others buildings in Telkom University which creates the situation where the data traffic jam is even worse. Current problem in Tokong Nanas building is the long waiting time during identification data and collision event when tapping during data traffic jam. In order to avoid collision event, RFID reader has to use anti-collision protocol so that arrange the reading and writing data on RFID tag. Parameter delay analysis on RFID network using power of two method which refers to the power of two algorithm is necessary to reduce the waiting time during identification data and to avoid the possibility of collision event. Based on the analysis power of two as its starting point on the collision peak from KU3.02 to KU3.09, resulting 126 collision data processing. Based on test improvement on the system task using delay comparing on the Slotted ALOHA, resulting 48 ms while using power of two algorithm resulting delay is 0,1 ms. The conclusion from above schemes is that there is 99,70% improvement in term of delay on the RFID network in this building. Keywords : Delay, Anti-Collision, power of two, tapping, RFID.

Abstrak Kereta Cepat merupakan sarana transportasi yang memiliki dampak positif dibandingkan Pesawat Terbang. Hal ini disebabkan efesiensi waktu diperjalanan dapat digunakan secara produktif, khususnya bagi yang membutuhkan layanan internet. Kereta Cepat Jakarta-Surabaya mengimplementasikan penggunaan Wi-Fi standar IEEE 802.11n karena fleksibilitasnya dalam mengakses layanan internet. Pengukuran ini menggunakan simulasi Network Simulator 3.26 (NS 3.26). Penelitian ini mengevaluasi komposisi trafik yang memiliki QoS terbaik pada Wi-Fi 802.11n. Parameter yang digunakan adalah delay, jitter, throughput, dan packet loss. Simulasi dirancang menggunakan lima skenario yang terdiri dari metode A, metode B, metode C, metode D dan metode E. Perbedaan dalam setiap skenario terletak pada data rate dan packet size yang digunakan. Berdasarkan lima metode tersebut, dapat disimpulkan delay dan throughput pada setiap layanan berbanding terbalik. Hal ini disebabkan delay yang besar menyebabkan throughput yang kecil. Berdasarkan metode A, metode B, metode C, layanan terbaik yang dapat digunakan adalah layanan VoIP dengan nilai sebesar 2,617 ms dan throughput sebesar 0,0075 Mbps. Hal ini disebabkan layanan VoIP memiliki tingkat priority layanan tertinggi dibandingkan layanan lainnya. Pada mix layanan metode D, layanan terbaik yang dapat digunakan adalah layanan VoIP vs Data (web browsing) dengan delay sebesar 2,644 ms dan throughput sebesar 0,0098 Mbps. Mix layanan tersebut memiliki kinerja yang lebih baik dibandingkan layanan lainnya. Pada metode E, delay yang dihasilkan saat menggunakan kanal sebesar 6,933 ms dan throughput sebesar 0,0412 Mbps. Hal ini disebabkan terdapat pantulan sinyal yang dihasilkan dari AP ke user yang menyebabkan delay yang besar. Kata kunci : WLAN, Access Point, Delay, Jitter, Throughput, Packet Loss Abstract Highspeed train is a means of transportation that has a positive impact compared to airplane. This is due to the efficiency of travel time that can be used productively, especially for workers who need internet service. Jakarta-Surabaya highspeed train implements the use of the IEEE 802.11n Wi-Fi standard because of its flexibility in accessing internet services. This measurement uses a Network Simulator 3.26 simulation (NS 3.26). This study evaluates the composition of traffic that has the best QoS on Wi-Fi 802.11n. The parameters used are delay, jitter, throughput, and packet loss. The simulation is designed using five scenarios consisting of method A, method B, method C, method D and method E. The difference in each scenario lies in the size of the data rate and packet size used. Based on the five methods produced, it can be concluded that the delay and throughput for each service are inversely proportional. This is because a large delay causes a small throughput. Based on method A, method B, method C, the best service that can be used is VoIP service with a value of 2,617 ms and throughput of 0,0075 Mbps. This is because VoIP services have the highest priority service level compared to other services. In the D mix service method, the best service that can be used is VoIP vs Data (web browsing) services with a delay of 2,644 ms and throughput of 0,0098 Mbps. Mix of services has a better performance than other services. In method E, the delay generated when using a channel is 6,933 ms and throughput is 0,0412 Mbps. This is because there is a reflection of the signal generated from the AP to the user which causes a large delay. Keywords: WLAN, Access Point, Delay, Jitter, Throughput, Packet Loss

Abstrak BPS Indonesia menyatakan pertumbuhan transportasi darat tertinggi wilayah pulau Jawa 2012-2016 adalah kereta api. PT Kereta Api Indonesia belum menyediakan layanan Internet di dalam kereta. Penelitian ini merancang jaringan Wi-Fi pada kereta cepat Jakarta-Surabaya menggunakan standar IEEE 802.11n. Pada jaringan tersebut terdapat server yang berfungsi menampung trafik user, serta menghubungkan jaringan internal (di dalam kereta) dan jaringan eksternal (di luar kereta). Pada jaringan server-gateway diperlukan scheduling untuk mengatur lalu lintas trafik user. Simulasi jaringan dilakukan menggunakan software NS-3. Parameter QoS yang digunakan adalah throughput, delay, dan packet loss, untuk layanan video streaming. Pengujian jaringan internal dilakukan bertahap 1-5 gerbong penumpang, menggunakan scheduling 10 ms, 100 ms, 250 ms, dan 500 ms. Pengujian jaringan eksternal dilakukan dengan membandingkan data simulasi dengan perhitungan menggunakan metode capacity planning. Pengujian 1 gerbong penumpang memperoleh throughput rata-rata user 0,426 Mbps, mendekati hasil perhitungan bandwidth yaitu 0,487 Mbps. Semakin banyak jumlah user maka throughput jaringan akan berkurang, dan semakin lama scheduling yang digunakan, delay-nya akan semakin tinggi. Pengujian scheduling 100 ms memiliki throughput yang relatif lebih stabil dan packet loss yang lelih rendah dibandingkan scheduling 10 ms, tetapi memiliki delay yang lebih tinggi. Pada simulasi jaringan eksternal kondisi terpadat, throughput pada sisi downlink 34,24036 Mbps, mendekati hasil perhitungan yaitu 36,39212 Mbps, kemudian delay yang diperoleh memenuhi standar yang digunakan yaitu 40 ms. Kata kunci: Wi-Fi, server, scheduling, kereta cepat Abstract BPS Indonesia states that the highest growth of land transportation in the Java region 2012-2016 is trains. PT Kereta Api Indonesia has not provided Internet services on the train. This Final Project designed a Wi-Fi network on the Jakarta-Surabaya fast train using the IEEE 802.11n standard. On the network there is a server that functions to accommodate user traffic, and connects internal networks (on the train) and external networks (outside the train). In the network servers, scheduling is needed to regulate user traffic. Network simulation is done using NS-3 software. The QoS parameters used are throughput, delay, and packet loss, for video streaming services. Internal network testing is done in phases of 1-5 carriage, using scheduling 10 ms, 100 ms, 250 ms, and 500 ms. External network testing is done by comparing simulation data with calculations using the capacity planning method. Testing of 1 carriage has a user average throughput of 0.426 Mbps, approaching the result of bandwidth calculation which is 0.487 Mbps. The more number of users, the network throughput will decrease, and the longer the scheduling is used, the delay will be higher. Testing scheduling 100 ms has relatively more stable throughput and low packet loss compared to scheduling 10 ms, but has a higher delay. In the simulation of the worst case on external network, the throughput on the downlink side is 34.24036 Mbps, meets the calculation result of 36.39212 Mbps, then the delay obtained meets the standard used which is 40 ms. Keywords: Wi-Fi, server, scheduling, high speed train