Uplink dynamic resource sharing of underlaying D2D and cellular communications

In this work, we propose a dynamic distributed resource sharing scheme which jointly considers mode selection, resource allocation, and power control in a unified framework for general D2D communications. Specifically, we model the joint problem of mode selection and resource allocation as a hedonic coalition formation game, and develop a coalition formation process based on the switch rule. Through this process, each cellular user makes an individual decision to form a Nash-stable partition, while accounting for the tradeoff between the benefits in terms of available rate and the costs in terms of the mutual interference. Moreover, we view the members of each coalition as a whole, and formulate a power control optimization problem to share the aim of maximizing the sum-rate of cellular links in this coalition. In order to solve this non-convex and multi-variable optimization problem with the online operation, we present a power control process, which employs the local piecewise-linear approach to take a locally and separately approximate optimal outcome. Then, we develop a dynamic resource sharing algorithm which iteratively operates the coalition formation process and the power control process. It allows cellular users to adapt to environmental changes in a distributed manner.