Throughput improvements for cellular systems with device-to-device communications

We consider the resource allocation problem in cellular networks which support Device-to-Device Communications (D2D) under the orthogonal resource sharing setting. We propose and analyze two resource allocation schemes that guarantee perfect access fairness among all users, regardless of whether they are cellular or D2D, while taking advantage of multi-user diversity and local D2D communications to provide marked improvements over existing cellular-only schemes. The first scheme, Cellular Fairness Scheme, provides the simplest D2D extension to existing cellular systems, while the second scheme, D2D Fairness Scheme, harnesses maximal performance from D2D enabled systems under the orthogonal sharing setting.