Coverage Enhancement for Vehicles

Abstract

The Third Generation Partnership Project (3GPP) has standardized Coverage Enhancement (CE) for Internet-of-Things (IoT) to connect devices in challenging radio conditions with cellular networks. CE is based on the principle of prolonged transmission time that exploits the fact that many IoT applications have relaxed requirements on data rate and latency, and the coverage can be significantly boosted by repeating transmissions for such applications. However, CE consumes a lot of radio resources and should be implemented carefully for different applications. This paper presents an end-to-end concept for realizing dynamic use of CE for connected vehicles in a resource efficient way. The proposed framework has the potential of improving coverage by around 10dB for low data rate connected vehicle applications, based on the 3GPP Long Term Evolution (LTE) standard.