A Comparative Study of Resource Allocation Schemes for D2D Networks Underlay Cellular Networks

Device-to-Device (D2D) communication is a promising take over in cellular communication. Due to its advantages it gains significance in the industrial standardization along with academic researchers. The concept of two tier network can be evolved to enlighten the cellular communication. Making each cellular user as transmission relays it would form a massive D2D network resulting in increased offloading of cellular traffic. The scope of D2D also extends to mobile cloud computing, proximity applications, social network content distribution and so on. It has been proved to be the best solution for energy efficient, spectral efficient technology which meets the capacity demand. However, the D2D scheme have practical challenges which needs to be met in order to keep its place primary in the next generation wireless communication. One of the major challenges which has to be addressed and resolved is resource allocation. In this paper various resource allocation scheme for D2D networks in cellular network are discussed. Each of the resource allocation with its signal to interference ratio performance with the other and the sum-data rate of each system is compared. D2D assisted Cognitive radio networks (Ahmad et al. in IET Commun 12(10): 1207–1214, 2008) can be developed to utilise the spectrum opportunistically for next generation communication systems.