Patent ID: 8743931

Claim:
A device operable to transmit channel measurement information, comprising: a multicarrier transceiver operable to transmit, during user data transmission or reception and using multicarrier modulation, a message that includes the channel measurement information and to modulate bits in the message using Quadrature Amplitude Modulation (QAM), wherein the message comprises information indicative of a plurality of signal-to-noise ratios determined during the user data transmission or reception, each signal-to-noise ratio associated with one or more subchannels that comprise a wideband communication channel, wherein the transceiver is further operable to transmit a first signal to initiate a change in a communication state of the transceiver and, in response to the signal not being received by a remote transceiver, transmitting a second signal to initiate a change in the communication state of the transceiver, the second signal having a higher power level than the first signal.