Short-Range Wireless Communication
First Claim
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1. One or more computer-readable memory devices storing processor-executable instructions, that when executed by a processor, implement a wireless communication module to:
- transmit, from a first wireless-communication-capable device, a first signal indicating a request to use a wireless medium for a first duration of time, the first signal transmitted at a first power and with a first modulation; and
responsive to receiving a response indicating that the wireless medium is free to use for the first duration of time, transmit, from the first wireless-transmission-capable device during the first duration of time for which use of the wireless medium is requested, a second signal transmitting data to a second wireless-communication-capable device, the second signal transmitted at a second power, with a second modulation, and for a second duration of time less than or equal to the first duration of time, the second signal being different from the first signal, the second power being less than the first power, and the second modulation being different than the first modulation.
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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.
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Citations
20 Claims
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1. One or more computer-readable memory devices storing processor-executable instructions, that when executed by a processor, implement a wireless communication module to:
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transmit, from a first wireless-communication-capable device, a first signal indicating a request to use a wireless medium for a first duration of time, the first signal transmitted at a first power and with a first modulation; and responsive to receiving a response indicating that the wireless medium is free to use for the first duration of time, transmit, from the first wireless-transmission-capable device during the first duration of time for which use of the wireless medium is requested, a second signal transmitting data to a second wireless-communication-capable device, the second signal transmitted at a second power, with a second modulation, and for a second duration of time less than or equal to the first duration of time, the second signal being different from the first signal, the second power being less than the first power, and the second modulation being different than the first modulation. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A System-on-Chip (SoC) comprising:
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an interface to a receiver configured to communicate via a wireless medium; an interface to a transmitter configured to communicate via the wireless medium; and a wireless communication module configured to; transmit, via the transmitter, a first signal indicating a request to use a wireless medium for a first duration of time, the first signal transmitted at a first power and with a first modulation; and responsive to not receiving a response for a period sufficient to indicate that a potentially interfering device did not receive the first signal, transmit, via the transmitter during the first duration of time for which use of the wireless medium is requested, a second signal transmitting data to a wireless-communication-capable device, the second signal transmitted at a second power, with a second modulation, and for a second duration of time less than or equal to the first duration of time, the second signal being different from the first signal, the second power being less than the first power, and the second modulation being different than the first modulation. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A wireless-communication-capable device comprising:
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a receiver configured to communicate via a wireless network; a transmitter configured to communicate via the wireless network; and a wireless communication module configured to; transmit, via the transmitter, a first signal indicating a request to use the wireless network for a first duration of time, the first signal transmitted at a first power and with a first modulation; and responsive to receiving, via the receiver, a response indicating that the wireless medium is free to use for the first duration of time or not receiving a response for a period sufficient to indicate that a potentially interfering device did not receive the first signal, transmit, via the transmitter during the first duration of time for which use of the wireless medium is requested, a second signal transmitting data to a second wireless-communication-capable device, the second signal transmitted at a second power, with a second modulation, and for a second duration of time less than or equal to the first duration of time, the second signal being different from the first signal, the second power being less than the first power, and the second modulation being different than the first modulation. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification