Signalling Channel and Radio System for Power Saving In Wireless Devices
AssigneeMicrosoft Technology Licensing, LLC
InventorsShiquan Wu, Wen Tong, Claude Royer, Edward Sich
Life of this patent
Estimating the term…
Abstract
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.
Claims20
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;
- or
- outside of the bandwidth of the wideband signal.
One or more processor-readable memory devices comprising processor-executable instructions which, responsive to execution by at least one processor, are configured to enable a device to:
- receive, using a narrow band receiver, a narrow band signal 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;
- process 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, wake 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;
- or
- outside of the bandwidth of the wideband signal.
A system to control power consumption of a device, the system comprising:
- a wideband receiver implemented, at least in part, in hardware and configured to receive a wideband signal;
- a narrow band receiver implemented, at least in part, in hardware, and configured to receive a narrowband signal;
- at least one processor;
- and
- one or more processor-readable memory devices comprising processor-executable instructions which, responsive to execution by the at least one processor, are configured to enable the system to:
- receive, using the narrow band receiver, a narrow band signal transmitted with a wideband signal, the narrow band signal comprising an indication of whether to wake up the wideband receiver when the wideband receiver is in a power saving mode;
- process 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, wake 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;
- or
- outside of the bandwidth of the wideband signal.
Dependencies are inferred from the claim text.