1. A method of wireless communication of a first user equipment (UE), comprising:receiving a signal from a second UE through a device-to-device (D2D) communication channel, wherein the signal comprises information on a transmit power used by the second UE to transmit the signal;
receiving a message from the second UE through radio resource control (RRC), the message configuring the first UE to transmit feedback periodically based on a feedback transmission period, and the message includes the feedback transmission period, wherein the feedback transmission period is based on a number of configured subframes;
determining a feedback based on the received signal within the number of configured subframes; and
transmitting the feedback to adjust transmission of the signal at the second UE, wherein the first UE is configured to transmit periodic feedback based on the number of configured subframes in the feedback transmission period.