Handling Mobility in Low-Power Wide-Area Network
Dali Ismail, Abusayeed Saifullah

TL;DR
This paper addresses the challenge of supporting mobile low-power nodes in LPWANs operating in TV white spaces by proposing techniques for frequency offset compensation, spectrum assignment, and efficient handoff management, validated through real-world deployments.
Contribution
It introduces novel methods for dynamic frequency offset estimation, mobility-aware spectrum assignment, and fast handoff procedures tailored for mobile nodes in SNOW LPWANs.
Findings
Enhanced mobility support enabling seamless node movement across SNOW networks.
Improved reliability, latency, and energy efficiency in mobile scenarios.
Successful deployment in urban and indoor environments demonstrating robustness.
Abstract
Despite the proliferation of mobile devices in various wide-area Internet of Things applications (e.g., smart city, smart farming), current Low-Power Wide-Area Networks (LPWANs) are not designed to effectively support mobile nodes. In this paper, we propose to handle mobility in SNOW (Sensor Network Over White spaces), an LPWAN that operates in the TV white spaces. SNOW supports massive concurrent communication between a base station (BS) and numerous low-power nodes through a distributed implementation of OFDM. In SNOW, inter-carrier interference (ICI) is more pronounced under mobility due to its OFDM based design. Geospatial variation of white spaces also raises challenges in both intra- and inter-network mobility as the low-power nodes are not equipped to determine white spaces. To handle mobility impacts on ICI, we propose a dynamic carrier frequency offset estimation and…
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Taxonomy
TopicsIndoor and Outdoor Localization Technologies · IoT Networks and Protocols · Energy Harvesting in Wireless Networks
