Promoting Relay-Assisted Device-to-Device Communication in Cellular Networks By Reward Mechanisms

摘要

Relay assisted Device-to-Device (D2D) communication further improves the efficient utilization of resources of cellular networks by relaying traffic between two User Equipment (UEs) which are not in D2D communication range. While the traffic of Base Station (BS) is offloaded leveraging direct communication between UEs, it is envisioned that the adoption of D2D communication may not be materialized without incentive to users since they have already subscribed monthly data plan. In this paper, we first find the achievable data rate both in relay assisted D2D link and cellular link. We then calculate the utility of BS, relay UE and content/traffic destination UE based on the achievable data rate. When the utility of a UE is positive, it takes part in relay assisted D2D communication without reward, otherwise it asks reward from the BS. We simulated our proposal under various scenarios and found that many UEs have positive utility in relay assisted D2D link. This incentivizes UEs to take part in relay assisted D2D communication without reward even if they have already subscribed data plan.