Patent ID: 8254483

Claim:
An apparatus for transmitting in a wireless cellular network, comprising: generating circuitry for forming a plurality of data symbols using a first type of information; generating circuitry for forming at least one reference symbol using a pre-defined reference signal; producing circuitry coupled to the generating circuitry and operable to determine if a second type of information consisting of an ACKNAK response is expected, and operable to produce a signal comprising the plurality of data symbols and the at least one reference symbol, wherein if the second type of information consisting of an ACKNAK response is expected, then the second type of information consisting of a 1-bit ACKNAK response is embedded in at least one said reference symbol by: mapping the generated 1-bit ACKNAK response into at least one symbol according to a constellation mapping scheme comprising two constellation points, wherein a 1-bit “ACK” response is mapped to a first constellation point, wherein a 1-bit “NAK” response is mapped to a second constellation point; and modulating the pre-defined reference signal in the at least one reference symbol with the symbol mapped from the 1-bit ACKNAK response; and transmitter circuitry coupled to the producing circuitry operable to transmit the produced signal.