Radio Resource Management Methods for Ultra-Reliable Low-Latency Communications in 5G LTE Narrowband Industrial Internet of Things

We proposed the architecture of the 5G LTE/Narrow Band Industrial Internet of Things (NB-IIoT) network for providing real time IIoT services by allocating the narrow bandwidth spectrum and transferring some functions over the eNodeB base station to the IoT controller. This method takes into account the priority of IIoT traffic and by scheduling resources on the new IoT controller allows to leave the existing eNodeB base stations unchanged. For the first time the method of IIoT traffic prioritization is proposed, on the basis of which the modified algorithms for planning and allocating radio resources in the IoT controller are developed. The method of load balancing for 5G LTE/NB-IIoT networks was developed. The proposed methods take into account the priority of IIoT service and provide Ultra-Reliable Low-Latency Communications (URLLC) for real time IIoT services in 5G networks.

I. Introduction

The pandemic that has shaken the world has clearly demonstrated to business how important it is to have solutions that help reduce costs, allow employees to work remotely, replace their manual labor, etc. Many such know-how is related to the use of the Internet of Things (IoT) [1]. Remote sensing is one of the basic technologies that allow the use of IoT, in which virtually any imaginary device can be equipped with unique identifiers and the ability to transfer data offline over a network. The main narrowband technologies, the integration of which is possible in the mobile network, functions on the standard LTE (Long-Term Evolution) are: Strizh, LoRaWan, Sigfox, NB-LTE, NB CloT, Bluetooth, Wireless RF, Zigbee, Wi-Fi (Fig.1). Fig. 1.

Wireless technologies for IoT