Smart Energy Efficient Device-to-Multidevice Cooperative Clustering for Multicasting Content

Abstract

A number of nodes that are interested in the same content can be grouped into a cluster and the cluster head can be used to relay the content received from the base station (BS) to the cluster members using device-to-multidevice (D2MD) communication. However, the data rate of such multicast communication depends on the worst channel among the cluster members and the cluster head. The rate can be enhanced by increasing the transmit power; however, this approach may deteriorate energy efficiency (EE) performance of the system. In this paper, we propose transmitting the content from more than one cluster head simultaneously. A novel algorithm is proposed that selects the cluster heads to improve the data rate of the multicast communication while keeping the total transmit power from the cluster heads constant. The cluster members receive power from all the cluster heads within the cluster and hence the received signal to noise power ratio improves. The improved received power makes communication at higher data rates possible, thus reducing the total transmission time. Hence, the energy requirement per bit will reduce. Simulation results show that 19% of reduction in energy per bit is possible by using more than one cluster head within the cluster.

Enhanced D2D Communication Model in 5G Networks

“…A number of algorithms for CH and cluster members' selection were presented in [12,13,14]. In [12], a clustering algorithm for in-band D2D communication is presented, which increases system efficiency and throughput.…”

“…A number of algorithms for CH and cluster members' selection were presented in [12,13,14]. In [12], a clustering algorithm for in-band D2D communication is presented, which increases system efficiency and throughput. In the same concern, [13] investigates using D2D communications for improving data throughput and ensuring energy efficiency of cellular networks.…”

Resource Allocation in Millimeter-Wave Device-to-Device Networks

“…e heterogeneous network scenario through radio resource sharing between other devices. e D2D clusters can also help in reducing signaling traffic and offer improved energy performance than the traditional cellular systems [71,72]. However, most of the studies in D2D clustering, such as in [73], have considered D2D communication forming clusters by using Wi-Fi Direct.…”

Clustering Optimization for Out-of-Band D2D Communications

“…A number of algorithms for cluster head selection are available today, e.g., [6,7]. The decision on selection of a particular cluster member as a cluster head affects at least network efficiency, energy expenditures, and quality of service (QoS) offered to all members within the cluster.…”

“…However, the maximum number of members in a cluster is restricted by coverage of selected D2D technology, channel throughput of cluster head and cluster traffic intensity, and cluster members physical location towards cluster head. Existing studies show that D2D clustering in 5G leads to reduction of signaling traffic and provides higher spectral efficiency and better energy performance than conventional cellular systems [7,8]. Thus, efficient D2D clustering in 5G networks especially with high density of devices is of a paramount importance.…”