BASE STATION IMPLEMENTING A PHYSICAL LAYER AUTOMATIC REPEAT REQUEST

摘要

A BASE STATION (30) IMPLEMENTING PHYSICAL LAYER AUTOMATIC REPEAT REQUEST INCLUDES A TRANSMITTER (38) AND A RECEIVER (52). THE TRANSMITTER (38) HAS A PHYSICAL LAYER TRANSMITTER FOR RECEIVING DATA, FORMATTING THE RECEIVED DATA INTO PACKETS, TRANSMITTING THE PACKETS AND RETRANSMITTING PACKETS IN RESPONSE TO FAILURE TO RECEIVE A CORRESPONDING ACKNOWLEDGMENT FOR A GIVEN PACKET; AN ACKNOWLEDGMENT RECEIVER (56) FOR RECEIVING THE CORRESPONDING ACKNOWLEDGMENT; AND AN ADAPTIVE MODULATION AND CODING CONTROLLER FOR COLLECTING RETRANSMISSION STATISTICS AND ADJUSTING THE PARTICULAR DATA ENCODING/MODULATION USING THE COLLECTED STATISTICS. THE RECEIVER (52) HAS A PHYSICAL LAYER RECEIVER FOR DEMODULATING THE PACKETS; A COMBINER/DECODER (50-1-50-N) FOR BUFFERING, DECODING AND DETECTING PACKET ERRORS; AND AN ACKNOWLEDGMENT GENERATOR FOR GENERATING AN ACKNOWLEDGMENT FOR EACH PACKET IF THAT PACKET HAS AN ACCEPTABLE ERROR RATE.(FIG 1B)