Transmission Power Control for FlashLinQ Device-to-Device Communication System

Heavy loads caused by the emerging local data traffic affect the performances of existing wireless communication systems. In order to offload the local data traffic from the congested wireless communication systems, device-to-device communication, which enables direct communications between local devices, is considered as an attractive solution. Qualcomm has introduced a new technology for D2D communication, called FlashLinQ (FLQ), which can improve utilization of wireless medium by making a D2D link to consider SIRs of its own and neighboring D2D links in the decision of medium access. However, since a control of transmission power for a D2D link affects the link scheduling results for both the link and its neighboring links, it is difficult to adequately adjust transmit power in FLQ. In this paper, we propose a new transmission power control scheme for FLQ, which controls each D2D link´s transmission power considering its effects to the FLQ´s medium access mechanism. From simulation results, we verify the proposed scheme can improve the capacity of FLQ network.