Patent ID: 9306784
Filing Date: 2016-04-05
CPC Classification: H04B,H04L,H04W,Y02D

Claim Text:
1. A method comprising: maintaining a wideband receiver in a non-processing and power saving mode, where when awakened, the wideband receiver consumes a greater amount of power for processing plural signals obtained from a corresponding plurality of subcarriers distributed over a pre-specified wide frequency band than when in its non-processing and power saving mode; receiving, using an associated narrow band receiver, a narrow band signal that is transmitted only in a narrow band adjacent to an edge one of the subcarriers, the narrow band being substantially narrower than the pre-specified wide frequency band, the narrow band signal comprising an indication usable to determine whether or not to wake up the wideband receiver for a case where that wideband receiver is in its non-processing and power saving mode; processing the received narrow band signal to determine whether to wake up the wideband receiver based, at least in part, on the indication; and responsive to determining to wake up the wideband receiver, waking up the wideband receiver out of the non-processing and power saving mode so as to thereby enable the awakened wideband receiver to process plural signals of corresponding plural subcarriers of the wide frequency band, wherein the narrow band signal is located at one of: