Spectrum Sharing Protocols based on Ultra-Narrowband Communications for Unlicensed Massive IoT
Ghaith Hattab, Danijela Cabric

TL;DR
This paper develops an analytical framework using stochastic geometry to evaluate ultra-narrowband (UNB) communication protocols for massive IoT, focusing on spectrum sharing among devices and coexistence with incumbent networks.
Contribution
It introduces a stochastic geometry-based model for UNB IoT networks, analyzes existing protocols, and proposes multiband schemes with performance comparisons.
Findings
Multiband schemes improve transmission capacity.
Intra- and inter-network interference significantly affect performance.
Analytical expressions provide design insights for UNB protocols.
Abstract
Ultra-narrowband (UNB) communications is an emerging paradigm that tackles two challenges to realizing massive Internet-of-things (IoT) connectivity over the unlicensed spectrum: the intra-network sharing, i.e., how the spectrum is shared among IoT devices, and the inter-network sharing, i.e., the coexistence of the IoT network with other incumbent networks. Specifically, intra-network sharing is enabled by using extremely narrowband signals to connect a massive number of IoT devices without any prior network synchronization. Further, to enhance robustness to incumbent interference, each IoT packet is sent multiple times, each at a different frequency within a single band. Nevertheless, the interplay between intra-network sharing and inter-technology coexistence at a large scale remains unclear. Thus, in this paper, we develop an analytical framework to model and analyze UNB networks.…
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Taxonomy
TopicsIoT Networks and Protocols · Wireless Body Area Networks · Energy Harvesting in Wireless Networks
