Showing papers by "Deutsche Telekom published in 2022"

Demonstration of latency-aware 5G network slicing on optical metro networks

Abstract: The H2020 METRO-HAUL European project has architected a latency-aware, cost-effective, agile, and programmable optical metro network. This includes the design of semidisaggregated metro nodes with compute and storage capabilities, which interface effectively with both 5G access and multi-Tbit/s elastic optical networks in the core. In this paper, we report the automated deployment of 5G services, in particular, a public safety video surveillance use case employing low-latency object detection and tracking using on-camera and on-the-edge analytics. The demonstration features flexible deployment of network slice instances, implemented in terms of European Telecommunications Standards Institute (ETSI) network function virtualization network services. We summarize the key findings in a detailed analysis of end-to-end quality of service, service setup time, and soft-failure detection time. The results show that the round-trip time over an 80 km link is under 800 µs and the service deployment time is under 180 s.

A dynamic that evolves toward a Nash equilibrium

Abstract: In this paper, we study an exponentiated multiplicative weights dynamic based on Hedge, a well-known algorithm in theoretical machine learning and algorithmic game theory. The empirical average (arithmetic mean) of the iterates Hedge generates is known to approach a minimax equilibrium in zero-sum games. We generalize that result to show that a weighted version of the empirical average converges to an equilibrium in the class of symmetric bimatrix games for a diminishing learning rate parameter. Our dynamic is the first dynamical system (whether continuous or discrete) shown to evolve toward a Nash equilibrium without assuming monotonicity of the payoff structure or that a potential function exists. Although our setting is somewhat restricted, it is also general as the class of symmetric bimatrix games captures the entire computational complexity of the PPAD class (even to approximate an equilibrium).

Design of Smart Farm Irrigation Monitoring System Using IoT and LoRA

Abstract: Agriculture is an essential part of society in Indonesia because most of the population lives off of farming. Water and irrigation are the most critical and central factors in the agricultural system. The uneven distribution of irrigation water can be a problem for farmers. In addition, most of the current irrigation systems are still operated manually, for example, irrigation gates. The gate still works manually and requires human labor to run it. This study aims to design a smart farm irrigation system using internet of things and LoRa communication technology. LoRa can transmit information up to a range of several kilometers without an internet connection. It will be advantageous when the farm's location is deep in the forest, and there is no GSM signal for internet access. This study indicates that this system brings benefits for farmers in running agriculture. Farmers' work time is shorter. They can use the remaining time to do other businesses to increase their income. The irrigation monitoring process becomes easier because they do not need to come to the farm location. In fact, they can use smartphones to monitor it.

Pre-SEMMS: A Design of Prepaid Smart Energy Meter Monitoring System for Household Uses Based on IoT

Abstract: The use of prepaid smart electricity services from the State Electricity Company (SEC) for the general public in Indonesia has increased. It is because prepaid electricity has several advantages compared to postpaid electricity. One of them is that it is becoming easier for customers to manage and control their daily electricity usage. Customers can also estimate their total electricity consumption each month. However, customers still have to manually view the information on the electricity meter to find data and information on prepaid electricity. It can make it difficult for customers if the electricity meter is placed outside the house, which is quite far away. Customers must also constantly monitor the use of electricity. This article discusses a prepaid smart electricity consumption monitoring design using Internet of Things technology. The design is carried out without changing the standard prepaid electricity meter system from the SEC. However, a KWH meter tool has been made that has been combined with Internet of Things technology and can calculate and monitor electricity usage. The results show that with this system, customers can more easily find out and monitor their daily electricity consumption.

Residential Water Tanks with IoT: A Solution for Household Water Consumption Monitoring

Abstract: In recent years, water scarcity has become a challenging problem faced by people in developing countries, especially in big cities where the population is very high. One of the causes is the unwise use of water, for instance, letting the faucet in the kitchen or bathroom on after using it, overusing the water in washing car or other vehicles, and wasting water when taking a bath. Most households in Indonesia use a groundwater well as their source of water and store it in a water tank. Moreover, they tend to waste water without knowing it. Therefore, efficiency and monitoring of water consumption play a vital role in decreasing the scarcity of water. This paper focuses on efficiency and monitoring household water consumption by designing a system for a residential water tank that is integrated with internet of things technology. The system will send the data on water consumption to a cloud server. Then, users are be able to monitor it through a mobile device. With the data, users could change their habit in using water and start to use it wisely. Thus, the water shortage can be prevented.

Evaluasi dan Analisis Kinerja LoRa Pada Sistem Irigasi Pertanian Berbasis IoT

Abstract: Komunikasi Long Range (LoRa) merupakan salah satu teknologi Internet of Things (IoT) yang sedang naik daun dan banyak didiskusikan oleh para peneliti. LoRa juga adalah bagian dari teknologi Low Power Wide Area Networks (LPWAN) di mana teknologi ini memfokuskan sistem komunikasi pada efisiensi energi, luas jangkauan, kecepatan data rendah, dan masa pemakaian baterai yang lama. LoRa beroperasi dengan menggunakan frekuensi radio industrial, scientific, and medical (ISM). Frekuensi tersebut dapat digunakan secara gratis tanpa harus membayar lisensi. Secara teoritis dan pada kondisi ideal, jangkauan LoRa bisa mencapai < 3 km di daerah perkotaan dan > 3 km di daerah pedesaan. Namun, masih sedikit penelitian yang membahas tentang evaluasi and analisis kinerja LoRa yang diimplementasikan di dunia nyata dengan studi kasus tertentu. Artikel ini bertujuan untuk mengevaluasi dan menganalisis kinerja LoRa yang diterapkan pada studi kasus sistem irigasi pertanian berbasis IoT. Terdapat beberapa parameter yang akan dievaluasi dan dianalisis, diantaranya adalah distance, received signal strength indication (RSSI), spreading factor, coding rate, power transmission, dan packet delivery ratio (PDR). Hasil percobaan dan pengukuran menunjukkan bahwa LoRa dapat mengirimkan paket data hingga jarak 2,5 km namun dengan tingkat PDR yang sangat rendah yaitu sekitar 5-7%. Hasil juga menunjukkan bahwa LoRa dapat bekerja secara optimal jika jarak > 1 km dengan tingkat PDR sekitar 70-100%.