Patent ID: 8589771

Claim:
A method of determining a transmission error, said method comprising: receiving, at a receiver, transmissions of a plurality of codewords corresponding to encoded first and second packets of data; determining at said receiver an error in decoding one of said codewords of said encoded first packet of data; transmitting from said receiver a first error message for use by a transmitter of said codewords indicating that an error has occurred in decoding one of said codewords of said encoded first packet of data; determining at said receiver that an error has occurred in said transmitter correctly receiving said first error message when one of said codewords does not correlate with said codewords of said encoded first packet of data, said codewords of said encoded first packet being uncorrelatable with said codewords of said encoded second packet; and transmitting a second error message from said receiver for use by said transmitter so as to indicate to said transmitter that said first error message was not received correctly by said transmitter.