Patent ID: 8149938

Claim:
A method for transmitting in a wireless cellular network, comprising: forming a plurality of data symbols using a first type of information; forming at least one reference symbol using a pre-defined reference signal; determining if a second type of information is expected; if the second type of information is expected, then embedding the second type of information in at least one said reference symbol by modulating the pre-defined reference signal; wherein the second type of information is an ACKNAK response, wherein generating a second type of information comprises generating a 1-bit ACKNAK response, and wherein embedding the second type of information in at least one reference symbol comprises: 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 transmitting a subframe comprising formed data symbols and reference symbols to a receiver.