Coverage and Latency Analysis for NB-IoT in Uplink Transmission

Narrowband internet of things (NB-IoT) is still in its infancy but gaining momentum compared to other existing Low power wide area (LPWA) technologies to capture the future IoT market. NB-IoT has attracted much attention because of providing low device cost, low energy consumption, comprehensive-area cellular connectivity. In uplink transmission, providing comprehensive area coverage with low latency and increased data rate is challenging when millions of devices are communicated simultaneously. However, to resolve this problem, the proposed work developed an uplink repetition-dominated model that provides enhanced coverage compared to existing technologies. Secondly, it increases the data rate by utilizing higher resource units with the same transmission time. The simulation results show that low latency can enhance data rate and coverage even in poor channel conditions.