An embodiment of the present invention provides a method, comprising retransmitting Automatic Repeat request (ARQ) blocks from a subscriber station (SS) to a base station (BS) without waiting for a timer to expire or depending on an explicit NACK from the BS. An embodiment of the present invention may further comprise accomplishing the retransmission of ARQ blocks by performing ARQ acknowledgement state updates at the SS and BS that affect the other side at PHY frame boundary, keeping block transmission relationship to a PHY frame number at the SS, and positively deducing the outcome of a transmission at the sender by exploiting the temporal relationship between blocks transmitted in the same PHY frame.