Mechanism for Adopting Device-to-Device Communication in Cellular Networks.

Recently Device-to-Device (D2D) communication has been proposed to efficiently utilize the resources of cellular networks by offloading some traffic of Base Station (BS) to direct links between User Equipments (UEs), i.e., cellular users. While there are many works on optimization of resource sharing for D2D communication in cellular networks, a little works has been done on how to attract users to adopt and take part in D2D communication. In this paper, in order to encourage users to adopt D2D communication, we present users achievable data rate both in D2D link and cellular link when they ask Base Station (BS) for contents. If the data rate in D2D link is less than cellular link, users will ask for reward for taking part in D2D communication. We also present how much reward will be awarded for taking part in D2D communication. By simulation, we show the percentage of users asking for rewards under various conditions. We see that all users do not ask rewards and willfully take part in D2D communication.