An adaptive connection scheduling method based on yielding relationship in FlashLinQ

As device-to-device (D2D) communications enables direct communication between user equipments, it can alleviate traffic overload on base stations. Qualcomm has introduced a new OFDM-based synchronous frame architecture for MAC/PHY, which is called FlashLinQ. In FlashLinQ, D2D user equipments perform signal-to-interference ratio based connection scheduling in order to distributively access wireless medium. The connection scheduling scheme enables D2D user equipments to simultaneously transmit data through same wireless medium. However, in this scheme since D2D user equipments simultaneously perform the medium access, they unnecessarily may yield data communication. In this paper, we propose a scheme that D2D user equipments adaptively perform connection scheduling by ignoring the interference from D2D links which are expected to yield data transmission. We verify that the proposed scheme can improve the system performance through simulations.