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Energy-Efficient Multicast Service Delivery Exploiting Single Frequency Device-To-Device Communications in 5G New

Sara Pizzi¹, Federica Rinaldi², Antonella Molinaro³

¹DIIES Department, University Mediterranea of Reggio Calabria, 89100 Reggio Calabria, Italy. sara.pizzi@unirc.it.

Sensors (Basel, Switzerland)

|July 11, 2018

Abstract:

The forthcoming fifth generation (5G) networks are claimed to deliver the large amount of traffic generated by the huge number of heterogeneous devices that constitute the Internet of Things (IoT). This unprecedented volume of both human- and machine-generated traffic to be managed imposes 5G network operators to move the focus from throughput-optimized to energy-efficiency-optimized resource allocation solutions. Device-to-device (D2D) communications are recognized as an effective offloading technique that the 5G network can exploit to boost the capacity and energy efficiency of future 5G networks. In this paper, we design a technique to efficiently deliver multicast traffic in a 5G New Radio (NR) network by exploiting the benefits of D2D communication and single-frequency operation in order to improve the overall network energy efficiency. In the designed solution, the subset of devices in better channel conditions are served through a conventional multicast transmission, while cell-edge devices receive the multicast service from relay nodes that simultaneously transmit in D2D mode the same content. The dimension of the multicast serving area and the set of D2D connections to establish are chosen in order to maximize the overall network energy efficiency. Performed simulation results show the effectiveness of the proposed solution under varying frame configurations and number of multicast devices.

Keywords:

5G New Radio device-to-device communication energy efficiency

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