Abstract
In 5G cellular networks, it is required to accommodate a massive number of Internet-of-Things (IoT) devices in a resource-efficient way. In this letter, we propose a random access with an inter-frame successive interference cancellation (RA-ISIC) for stationary IoT networks. In our proposed scheme, the BS does not discard the collided packets and attempts to recover them through inter-frame SIC operations. We evaluate the performance of our proposed scheme in terms of resource efficiency. Results show that a certain level of system load is required to maximize the efficiency of our proposed scheme, which can be achieved through a probabilistic retransmission (PR) policy. Consequently, our proposed scheme can effectively improve the resource efficiency and can be suitable to accommodate more IoT devices with a smaller amount of resources, compared to the conventional one.
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