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US 8,571,479 B2Granted
Short-range wireless communication
AssigneeMarvell World Trade Ltd.
InventorRaja Banerjea
Life of this patent
Estimating the term…
Abstract
The present specification describes techniques and apparatus that enable wireless devices to communicate effectively at short ranges. In one implementation, the transmit power of a transmitting device is reduced to permit a receiving device to demodulate a signal.
Claims20
One or more computer-readable memory devices storing processor-executable instructions, that responsive to execution by a processor, implement a wireless communicator to:
- transmit, via a transmitter, a link-setup request through a wireless network to a device, the link-setup request requesting a current transmit power of the device and transmitted at a lower-than-nominal power level of the transmitter effective to reduce saturation of a receiver of the device;
- receive, via a receiver, a link-setup response through the wireless network from the device, the link-setup response indicating the current transmit power of the device and having been received at a received power;
- determine, based on the received power at which of the link-setup response is received, a desired data-signal transmit power for the device;
- and
- transmit, via the transmitter, an indication of the desired data-signal transmit power through the wireless network to the device.
2 more elements
A System-on-Chip (SoC) comprising:
- a hardware interface to a receiver, the receiver configured to receive data via a wireless medium;
- a hardware interface to a transmitter, the transmitter configured to transmit data via the wireless medium;
- and
- one or more processors configured to execute processor-executable instructions that, responsive to execution, implement a wireless communicator:
- transmit, via the transmitter, a link-setup request through the wireless medium to a device, the link-setup request requesting a current transmit power of the device and transmitted at a lower-than-nominal power level of the transmitter effective to reduce saturation of a receiver of the device;
- receive, via the receiver, a link-setup response through the wireless medium from the device, the link-setup response indicating the current transmit power of the device and having been received at a received power;
- determine, based on the current transmit power of the device and the received power at which of the link-setup response is received, a desired data-signal transmit power for the device;
- and
- transmit, via the transmitter, an indication of the desired data-signal transmit power through the wireless medium to the device.
6 more elements
A wireless-communication-capable device comprising:
- a receiver configured to receive data via a wireless network;
- a transmitter configured to transmit data via the wireless network;
- and
- a wireless communicator configured to:
- receive, via the receiver, a link-setup request through the wireless network from another wireless-communication-capable device, the link-setup request:
- requesting a current transmit power of the transmitter;
- modulated using a first modulation scheme;
- and received at a power level insufficient to saturate the receiver;
- transmit, via the transmitter, a link-setup response through the wireless network to the other wireless-communication-capable device, the link-setup response:
- indicating the current transmit power of the transmitter;
- and modulated using the first modulation scheme;
- receive, via the receiver and in response to the link-setup response, an indication of a desired data-signal transmit power through the wireless network from the other wireless-communication-capable device, the indication of a desired data-signal transmit power:
- indicating a desired transmit power at which data-signals modulated using a second modulation scheme are to be transmitted;
- and modulated using the first modulation scheme;
- and
- transmit, via the transmitter, the data signals modulated using the second modulation scheme and through the wireless network to the other wireless-communication-capable device, the data signals transmitted at the desired data-signal transmit power.
13 more elements
Dependencies are inferred from the claim text.