Abstract—Low-Power Wide-Area Networking (LPWAN) technology is attracting attention as a communication technology for IoT(Internet of Things) by enabling low-power and long-distance transmission. In this paper, based on Long Range (LoRa) technologies, one of representative technologies in LPWAN area, we suggest the need for multi-hop communication class to solve the communication shadow area and discuss the concept of it. Also, we are going to discuss the “challenges” which are proposed the concept of communication class would not violate the existing LPWAN requirements.

Index Terms—LPWAN, LoRa, LoRaWAN, Multi-hop, communication shadow area.