Efficient Multicast Algorithm for Dynamic Intra Cluster Device-to-Device communication for small world model paper

Device to Device (D2D) communication technique has been projected as means of taking the benefit of increasing performance of cellular communication with direct link between users. In this paper, we propose a dynamic intra cluster data sharing method taking advantage of D2D multicast. One of the users serves as cluster head to take turns to multicast at a particular time, selected by base station on the basis of power level. Cluster head at that particular time is able to access to the users in the cluster. In our algorithm dynamic data demand is considered in order to send the packets in sequence based on users need. Base station identifies the user with more requests, and informs the Cluster head. Cluster head asks that particular user to serve as transmitting user. The transmitting user monitors the acknowledgements sent by the receiving users. If acknowledgement fails to come within the minimum time (t_min) the transmitting user informs the cluster head. Then cluster head checks the reason for failure of acknowledgement. Accordingly, it requests the next user with more requests to transmit the data to the users who failed to receive it. This process continues until all the users receive the data, this improves the transmission efficiency. By simulation we prove that throughput increases, blocking probability and latency get reduced. All these increase the Quality of Service (QoS) compared to Intra cluster D2D communication for a small world model based on poor link quality between the users [3].