Signalling Channel and Radio System for Power Saving In Wireless Devices

摘要

Wireless devices, transmitters, systems and methods are provided that have a narrow band signaling channel and a wide band channel, for example an OFDM channel. In order to save power, the wireless device is nominally powered down with the exception of a receiver specific to the narrow band signaling channel. Once instructed to do so over the narrow band signaling channel, the wireless device wakes up the rest of its wide band receive circuitry.

主权项

1. A method comprising:
receiving, using a narrow band receiver, a narrow band signal that is transmitted with a wideband signal, the narrow band signal comprising an indication of whether to wake up a wideband receiver that is in a power saving mode; processing the narrow band signal to determine whether to wake up the wideband receiver based, at least on part, on the indication; and responsive to determining to wake up the wideband receiver, waking up the wideband receiver out of the power saving mode effective to process the wideband signal, wherein the narrow band signal is located at one of:
an edge of a bandwidth of the wideband signal; oroutside of the bandwidth of the wideband signal.