Abstract
Low Power Wide Area Networks (LPWANs) provide an energy efficient, wide-range network service to IoT devices. The Quality of Service (QoS) varies significantly between LPWANs in the licensed and unlicensed band, requiring to choose between cost and performance. Combining LPWANs with a multipath approach could improve the QoS, but existing protocols are unsuitable for LPWAN applications. In this letter a novel Narrowband Bundling Protocol (NBP) is proposed, which is tailored to the characteristics of LPWANs. It improves latency, reliability and coverage of IoT networks by aggregating multiple links. First experiments with a real prototype demonstrate promising QoS improvements.
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