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Energy and spectral efficient direct Machine-to-Machine (M2M) communication for cellular Internet of Things (IoT) networks

Machine-to-Machine (M2M) communication is expected to be one of the major application areas of cellular communications in near future. In cellular M2M communication, although, the gateway layer provides smooth management to underlaying cellular networks, it over-burdens the network in terms of delay and bandwidth utilization. Therefore, with the recent advancements in direct Device-to-Device (D2D) communication in Long Term Evolution (LTE) networks, it becomes an effective strategy to use D2D techniques in cellular M2M networks. In this paper, we have proposed a novel direct M2M technique which uses D2D communication and offloading principles. In the proposed scheme, instead of communicating via gateway nodes, close proximity M2M devices can directly communicate among themselves using D2D communication. The proposed method shows promising gain in Quality of Services (QoS) in terms of delay and throughput for cellular M2M networks in addition to the total energy consumption. The proposed direct M2M communication technique can also be used to realize the smart technologies such as smart home/ village/city in an energy and spectral efficient way.