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Device-to-Device (D2D) communication is one of the promising technology for the future 5G networks. Utilizing D2D in cellular networks has advantage in terms of capacity and delay. However, in D2D underlay cellular setting, the main concern is quality of service (QoS) for the cellular user due to the mutual interference between D2D user and the cellular user (CU). To utilize the gain brought by D2D setting without violating QoS of the CU, resource sharing is an important design criteria. To this end, we present an optimization model to investigate a resource sharing problem combined with scheduling in a D2D uplink underlay setting. We have used the proposed model to investigate an example resource sharing scenario, in which multiple D2D pairs share the uplink resource of CU, and identified delay and sum throughput for different parameter settings. We observed that there is a significant gain in terms of sum-throughput in allowing a small number of D2D pairs to re-use the cellular resources. [ABSTRACT FROM AUTHOR]

The seven articles in this special section focus on agile radio resource management technologies for use in 5G mobile communications (5G). 5G networks will support a wide range of frequency bands, features, and use cases, with native support for efficient operation. 5G is considered as a significant disruptor to traditional mobile networks. Some of the main motivations behind the design, standardization, and deployment of the new generation of mobile networks include: significant increase of the supported data rates for enhanced mobile broadband, support for ultra-reliable and low-latency communications (URLLC), and support for massive machine type communications (mMTC). The combination of these 5G pillars can further enable new use cases, such as virtual or augmented reality (VR/AR), enabled by combining eMBB and URLLC. [ABSTRACT FROM AUTHOR]