Abstract
A multi-hop approach can extend network coverage, including connectivity to difficult-to-access areas. This paper discusses the implementation and evaluation of the two-hop real-time LoRa (Two-hop RT-LoRa) protocol previously proposed to be used for industrial monitoring and control applications. The protocol was implemented on LoRa devices to support a multi-hop LoRa network that consists of one LoRa gateway and 40 end devices. It is shown with various campus deployment scenarios that the protocol improves reliability in data transmission significantly
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