Self-organized energy efficient channel assignment for cognitive D2D communication in 5G networks

With the rapid increase in the number of smartphones and bandwidth hungry applications, it is required to use the bandwidth and power in an efficient way. The 5G networks can fulfill these ramping demands of bandwidth and high data rates by leveraging the device to device (D2D) communication. The D2D communication makes efficient use of the available resources, i.e., bandwidth and power with the help of direct communication of the devices with each other without/partial contribution of the base station (BS). In this paper, we first define an energy efficient channel assignment problem for a D2D network taking into account both the intra and inter link interference for D2D communication. Then, we propose a fully distributed game theory based solution to solve this problem, keeping in view the scalability and self-organization concerns of D2D communication. Finally, an exhaustive simulation is done to evaluate the proposed solution and results are presented in terms of energy efficiency in comparison with the random and greedy approaches.