Abstract
Scarcity in communication spectrum in cellular network is one of the major challenges faced by the service providers around the world. Many efforts were put forth to manage the efficient spectrum distribution among various cells in the network. Reusing the resources by different cells in a safe distance without interference is the current mechanism to improve spectrum efficiency. Spectrum efficiency can be even improved by reusing the resources within a single cell. Device to Device (D2D) communication, a new technology boosts the spectrum reuse inside a cell in 5G. The major hurdle in implementing D2D is in the management of interference in a highly mobile environment. This high mobility risks the life-time of a D2D link and frequent shifting from D2D mode to normal cellular mode will occur. In this paper an effort is put forward to maintain the D2D link as long as possible through a resource exchange mechanism. The exchange occurs when interference by a cellular or D2D link threatens another D2D link. This approach can improve the life-time of a D2D link and thereby improving the consistency of the network.
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