XCopy: Boosting Weak Links for Reliable LoRa Communication
Xianjin Xia, Qianwu Chen, Ningning Hou, Yuanqing Zheng, Mo Li
Abstract
LoRaWAN suffers dramatic performance degradation over a long communication range due to signal attenuation and blockages. To ensure reliable data transfer, LoRaWAN adopts retransmission mechanism where an unacknowledged packet is retransmitted multiple times in the hope of successfully delivering the packet at least once over harsh wireless channels. This retransmission mechanism is ill-suited for LoRa: 1) unsuccessful retransmissions lead to high power consumption for battery-powered LoRa nodes, and 2) a retransmission at another time does not necessarily improve the signal strength over harsh wireless channels.
Topics & Concepts
RetransmissionComputer scienceComputer networkBoosting (machine learning)WirelessNetwork packetPower consumptionDegradation (telecommunications)Real-time computingPower (physics)TelecommunicationsQuantum mechanicsPhysicsMachine learningIoT Networks and ProtocolsEnergy Harvesting in Wireless NetworksWireless Body Area Networks