Service time-based region division in OVSF-based wireless networks with adaptive LTE-M network for machine to machine communications

Abstract

+e 3GPP standards have presented the LTE-M as one of the main technologies to provide services to Internet of +ings (IoT). +e IoT applications are usually short-lived applications like smart sensing, surveillance systems for home or businesses, and data uploading applications like metering. In this paper, the proposed architecture of the base station has a LTE interface which assigns resource blocks (RBs) and another 3G interface which is equipped with orthogonal variable spreading factor (OVSF) codes. +e IoT devices deployed ubiquitously leads to massive machine type communication, which leads to burst traffic on current cellular services. +e IoT devices when assigned large resources will reduce the radio efficiency. +e work in this paper assigns OVSF codes available on 3G interface to the IoT devices. +e LTE resources are used for IoT devices in case of emergency or when resources of 3G interface are 100% utilized. +is will solve the problem of both small data transfer and connectivity requirement of IoT devices. +e IoT applications are event-driven and time-bound also, and the resources are also reserved for these applications in the proposed work. +e simulations and results show that proposed work increases both network efficiency and capacity