Patent ID: 7978753

Claim:
A multicarrier transceiver having a sleep mode capability, comprising A. means responsive to a sleep mode command for: (1) storing selected state parameters characteristic of the communications channel over which the transceiver is operating; and (2) reducing power to selected portions of transceiver circuitry; and B. means responsive to a wake-up command for: (1) restoring power to said transceiver; (2) restoring the state of said transceiver from said sleep mode by means of said stored parameters; and C. means for maintaining a common, synchronized data frame count between said transceiver and a remote transceiver with which it communicates, to thereby facilitate restoration of communication without reinitialization of said transceiver, wherein the state parameters include one or more parameters selected from the group comprising frequency-domain equalizer coefficients, time-domain equalizer coefficients, echo canceller coefficients, bit allocations, coding parameters, fine gains, and subchannel gains.