Narrow Band Internet of Things (NB-IoT)

In this paper, we study the energy consumption of Narrowband IoT devices. The paper suggests that key to saving energy for NB-IoT devices is the usage of full Dis-continuous Reception (DRX), including the use of connected-mode DRX (cDRX): In some cases, cDRX reduced the energy consumption over a 10-year period with as much as 50%. However, the paper also suggests that tunable parameters, such as the inactivity timer, do have a significant impact. On the basis of our findings, guidelines are provided on how to tune the NB-IoT device so that it meets the target of the 3GPP, i.e., a 5-Wh battery should last for at least 10 years. It is further evident from our results that the energy consumption is largely dependent on the intensity and burstiness of the traffic, and thus could be significantly reduced if data is sent in bursts with less intensity, irrespective of cDRX support.

Seiring berjalannya waktu, jumlah kendaraan pribadi yang digunakan masyarakat semakin meningkat, namun tidak sebanding dengan lahan parkir yang terbatas khususnya di daerah ibu kota Jakarta. Sehingga, diperlukan penerapan sistem baru berbasis teknologi modern untuk memanajemen lahan parkir agar lebih efisien di Jakarta. Pada makalah ini, diusulkan sistem Smart Parking berbasis teknologi IoT untuk mendukung program Jakarta Smart City dengan menerapkan jaringan Narrowband Internet of Things (NB-IoT). NB-IoT merupakan salah satu jaringan LPWAN (Low Power Wide Area Network) yang memiliki karatkteristik handal, efisien, low latency, dan biaya infrastruktur yang rendah. Sistem dirancang menggunakan data dari node sensor dikirim oleh modul NB-IoT dengan manajemen informasi dasar, biaya manajemen, pengawasan node sensor, manajemen tugas dan modul kecerdasan bisnis yang dirancang diimplementasikan di Cloud server. Sistem smart parking dilengkapi aplikasi seluler dan platform pembayaran digital yang membuat sistem mudah dan nyaman digunakan.

Keywords— Jakarta Smart City, NB-IoT, Smart Parking

The current statuses and future promises of the Internet of Things (IoT), Internet of Everything (IoE) and Internet of Nano-Things (IoNT) are extensively reviewed and a summarized survey is presented. The analysis clearly distinguishes between IoT and IoE, which are wrongly considered to be the same by many commentators. After evaluating the current trends of advancement in the fields of IoT, IoE and IoNT, this paper identifies the 21 most significant current and future challenges as well as scenarios for the possible future expansion of their applications. Despite possible negative aspects of these developments, there are grounds for general optimism about the coming technologies. Certainly, many tedious tasks can be taken over by IoT devices. However, the dangers of criminal and other nefarious activities, plus those of hardware and software errors, pose major challenges that are a priority for further research. Major specific priority issues for research are identified.

The Internet of Things paradigm has expanded the possibility of using sensors ubiquitously, particularly if connected to a cloud service for data sharing. There are several ways to connect sensors to the cloud: wearable or portable devices often lean on a smartphone that acts as a gateway, while other sensors, such as smart sensors for continuous monitoring (e.g. fall detectors) are connected through wireless networks covering a limited area (e.g. ZigBee or Wi-Fi). Their functionality can be improved using them in both outdoor and indoor environments without other devices. NB-IoT is a recently introduced wide-range protocol with a good compromise between low power, low deployment costs, payload length, and data rate. Traditionally, sensor nodes rely on only one type of radio: an innovative solution could be a sensor node exploiting a combination of different transmission technologies with the aim of achieving higher portability. In this paper, a hybrid solution based on NB-IoT/Wi-Fi is presented. The Wi-Fi connection is primarily selected due to its lower power consumption (compared to NB-IoT), while NB-IoT is activated only when a Wi-Fi network is not available. This study aims to evaluate the power consumption of the proposed solution with respect to single radio NB-IoT technology. Test boards have been implemented, and several data transmission tests have been carried out with both NB-IoT and Wi-Fi radios. Different received powers and payload lengths have been considered to analyze the impact on the energy profile of smart sensors. It has been demonstrated that using NB-IoT for both indoor and outdoor leads to an acceptable battery discharge time, with a strong dependence on the payload length. Under certain conditions, the proposed hybrid solution results in a battery duration up to two times higher than single-radio NB-IoT. INDEX TERMS Sensor systems and applications, smart devices, power measurements, low-power electronics, Internet of Things (IoT).

Narrowband-IoT is one of the emerging LPWAN technologies in the market. Traditionally asset tracking employs Global Positioning System (GPS) and General Packet Radio Service (GPRS) connections to send telemetry data to database servers. Compared to GPRS, NB-IoT has a smaller power usage, given proper implementation. This paper discusses NB-IoT implementation in asset tracking applications. Our test includes these parameters: latency, throughput, packet loss, and power usage for both technologies. The result obtained showed that NB-IoT was underperformed in HTTP but in UDP test, NB-IoT showed better power consumption compared to GPRS (0.352 W vs. 0.542 W) even though both have similar uplink throughput (around 350 B/s). From these findings, this new cellular standard is deemed appropriate in the Asset Tracking application, given the correct protocol and architecture.