LAUSR

Low-power wide-area networks (LPWANs) are emerging technologies aiming at serving sporadic IoT traffic. While reliability of LPWANs in single-technology deployment has been well investigated, there is lack of research on performance evaluation in coexisting scenarios. To tackle this problem, we start by modeling statistics of aggregated interference from asynchronous sources over shared radio resources. Then, using stochastic geometry, we derive the closed-form statistics of reliability, mean success probability, and the mean local delay, defined as the mean time (in numbers of attempts) until a packet is successfully received by the nearest access point. We further investigate the interplay between traffic-load, access points density, and quality of communications in coexistence scenarios. Then, we derive the communications parameters regions, in terms of transmission power, access point density, and time activity factor, for which, the mean local delay is finite. The numerical and simulation results also corroborate the analysis.