Evaluation, modeling and optimization of coverage enhancement methods of NB-IoT
| Autor: | Sahithya Ravi, Pouria Zand, Mohieddine El Soussi, Majid Nabi |
|---|---|
| Přispěvatelé: | Mathematics and Computer Science, Electronic Systems, Networked Embedded Systems Lab |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Networking and Internet Architecture (cs.NI)
FOS: Computer and information sciences Optimization LPWAN Coverage enhancement NS-3 Computer science 3rd Generation Partnership Project 2 Reliability (computer networking) 05 social sciences 050801 communication & media studies 020206 networking & telecommunications Link adaptation 02 engineering and technology Network simulation Computer Science - Networking and Internet Architecture 0508 media and communications Narrowband Computer engineering Wide area network NB-IoT 0202 electrical engineering electronic engineering information engineering |
| Zdroj: | PIMRC 2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2019 |
| DOI: | 10.1109/PIMRC.2019.8904109 |
| Popis: | Narrowband Internet of Things (NB-IoT) is a new Low Power Wide Area Network (LPWAN) technology released by the Third Generation Partnership Project (3GPP). The primary goals of NB-IoT are enhanced coverage, low cost, and long battery life. In order to enhance coverage, NB-IoT has new features, such as increasing transmission repetitions, decreasing bandwidth, and adapting the Modulation and Coding Scheme (MCS). In this paper, we present an implementation of these three features of NB-IoT in NS-3, an end-to-end network simulator. Using the developed simulation framework, the influence of the coverage enhancement features on network reliability and latency is evaluated. Furthermore, we propose a hybrid link adaptation strategy based on all three features, which tries to achieve optimal latency and coverage. To achieve this, we formulate and solve an optimization problem that finds the optimal value of repetitions, bandwidth and MCS such that the latency is minimum and the reliability is maintained. Based on the hybrid link adaption strategy, a new scheduler is implemented and evaluated in the NS3 simulator. Through numerical results we show that the hybrid link adaptation method achieves lower latency and higher coverage than any of the coverage enhancement techniques. We also show that the proposed optimizationmethod achieves the same performance as the exhaustive search method but with lower complexity. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|