An apparatus for processing a downlink frame is provided which includes receiver circuitry (324), a physical layer processor (346) coupled to the receiver circuitry (324) and a MAC layer processor (348) coupled to the physical layer processor (346) is provided. The receiver circuitry (324) receives radio frequency (RF) signals and demodulates the RF signals to recover the downlink frame. The physical layer processor (346) processes the downlink frame to recover a plurality of MPDUs (704), each MPDU (500) including a CID (508). And the MAC layer processor (348) receives one of the plurality of MPDUs (806, 810) from the physical layer processor (346), processes it to recover its CID (812), and determines in response to the CID whether to process a next one of the MPDUs or whether to cease processing of the MPDUs (816).