Gbadamosi, Safiu AbiodunHancke, Gerhard P.Abu-Mahfouz, Adnan Mohammed2023-08-142022-11Gbadamosi, S.A., Hancke, G.P. & Abu-Mahfouz, A.M. 2022, 'Interference avoidance resource-allocation for D2D-enabled 5G narrowband Internet of Things', IEEE Internet of Things Journal, vol. 9, no. 22, pp. 22752-22764, doi : 10.1109/JIOT.2022.3184959.0018-9197 (online)10.1109/JIOT.2022.3184959http://hdl.handle.net/2263/91898In dense, interference-prone 5G narrowband Internet of Things (NB-IoT) networks, device-to-device (D2D) communication can reduce the network bottleneck. We propose an interference-avoidance resource allocation for D2D-enabled 5G NB-IoT systems that consider the less favorable cell edge narrowband user equipment (NUEs). To reduce interference power and boost data rate, we divided the optimization problem into three subproblems to lower the algorithm’s computational complexity. First, we leverage the channel gain factor to choose the probable reuse channel with better Quality of Service (QoS) control in an orthogonal deployment method with channel state information (CSI). Second, we used a bisection search approach to determine an optimal power control that maximizes the network sum rate, and third, we used the Hungarian algorithm to construct a maximum bipartite matching strategy to select the optimal pairing pattern between the sets of NUEs and the D2D pairs. According to numerical data, the proposed approach increases the 5G NB-IoT system’s performance in terms of D2D sum rate and overall network signal-to-interference plus noise ratio (SINR). The D2D pair’s maximum power constraint, as well as the D2D pair’s location, pico-base station (PBS) cell radius, number of potential reuse channels, and D2D pair cluster distance, all influence the D2D pair’s performance. The simulation results demonstrate the efficacy of our proposed scheme.en© 2022 IEEE. This article has been accepted for publication in IEEE Internet of Things Journal. This is the author's version which has not been fully edited and content may change prior to final publication.Narrowband Internet of Things (NB-IoT)Device-to-device (D2D)Narrowband user equipment (NUEs)Channel state information (CSI)Signal-to-interference plus noise ratio (SINR)5G narrowband Internet of ThingsChannel gain factorInterference avoidanceResource allocationDevice-to-device communication5G mobile communicationResource managementInternet of Things (IoT)UplinkCellular radioComputational complexityOptimisationRadiofrequency interferenceQuality of serviceProbabilityPower controlPostprint Article