Method and system of radio frequency (RF) power transmission in a wireless network
First Claim
1. A method of radio frequency (RF) power transmission in a wireless network including multiple wireless stations, the method comprising:
- generating control signals for switching a receiving wireless station between a power reception mode and a data reception mode, the control signals providing switching information including information about which of the modes to switch to, and information about timing of the switching;
switching the wireless station between power reception and data reception modes based on the control signals; and
providing a power inter-frame space interval for generating RF transmission for powering wireless stations;
wherein in the data reception mode, the receiving wireless station processes an RF transmission from a sending wireless station as a data communication, and in the power reception mode the receiving wireless station processes the RF transmission as energy radiation for powering the receiving wireless station;
wherein the wireless network comprises a WLAN or WPAN network.
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Abstract
A method and system of radio frequency (RF) power transmission among multiple wireless stations is provided. Control signals for switching a receiving station between a power reception mode and a data reception mode are generated. The control signals provide switching information about which of the modes to switch to, and timing of the switching. In the data reception mode, the receiving station processes an RF transmission from a sending station as a data communication. In the power reception mode the receiving station processes the RF transmission as energy radiation for powering the receiving station. One type of control signal for power mode switching is generated at the MAC layer of a receiving station and sent to the PHY layer of that station for power mode switching. Another type is RTS/CTS control signal exchanged between the sending and receiving stations.
24 Citations
31 Claims
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1. A method of radio frequency (RF) power transmission in a wireless network including multiple wireless stations, the method comprising:
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generating control signals for switching a receiving wireless station between a power reception mode and a data reception mode, the control signals providing switching information including information about which of the modes to switch to, and information about timing of the switching; switching the wireless station between power reception and data reception modes based on the control signals; and providing a power inter-frame space interval for generating RF transmission for powering wireless stations; wherein in the data reception mode, the receiving wireless station processes an RF transmission from a sending wireless station as a data communication, and in the power reception mode the receiving wireless station processes the RF transmission as energy radiation for powering the receiving wireless station;
wherein the wireless network comprises a WLAN or WPAN network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 26)
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10. An apparatus for radio frequency (RF) power transmission in a wireless network including multiple wireless stations, comprising:
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a controller configured for operation in a receiving station to generate control signals for switching a receiving wireless station between a power reception mode and a data reception mode, the control signals providing switching information including information about which of the modes to switch to, and information about timing of the switching; wherein the controller comprises a media access control (MAC) layer that provides a power inter-frame space interval for generating RF transmission for powering wireless stations; wherein in the data reception mode, the receiving wireless station processes an RF transmission from a sending wireless station as a data communication, and in the power reception mode the receiving wireless station processes the RF transmission as energy radiation for powering receiving wireless station;
wherein the wireless network comprises a WLAN or WPAN network. - View Dependent Claims (11, 12, 13, 14, 15, 16, 27)
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17. A wireless communication system for radio frequency (RF) power transmission, comprising:
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multiple wireless stations configured for forming a wireless network; and a controller module in a receiving wireless station, configured for RF power transmission, the controller module including; a controller function configured for generating control signals for switching the receiving wireless station between a power reception mode and a data reception mode, the control signals providing switching information including information about which of the modes to switch to, and information about timing of the switching; wherein the controller comprises a media access control (MAC) layer that provides a power inter-frame space interval for generating RF transmission for powering wireless stations; wherein in the data reception mode, the receiving wireless station processes an RF transmission from a sending wireless station as a data communication, and in the power reception mode the receiving wireless station processes the RF transmission as energy radiation for powering the receiving wireless station;
wherein the wireless network comprises a WLAN or WPAN network. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 28)
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29. A method of radio frequency (RF) power transmission in a wireless network including multiple wireless stations, the method comprising:
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generating control signals for switching a receiving wireless station between a power reception mode and a data reception mode, the control signals providing switching information including information about which of the modes to switch to, and information about timing of the switching; switching the wireless station between power reception and data reception modes based on the control signals; and transmitting a Request to Send (RTS) frame from a sending station to a destination receiving station, and transmitting a Clear To Send (CTS) frame from the destination receiving station to the sending station, wherein the RTS and CTS frames provide remaining network stations with switching information for said remaining device to switch to power reception mode during a communication period between the sending and destination receiving stations, and utilizing an RF transmission from the sending station during the communication period as energy radiation for power said remaining stations, wherein in the data reception mode, the receiving wireless station processes an RF transmission from a sending wireless station as a data communication, and in the power reception mode the receiving wireless station processes the RF transmission as energy radiation for powering the receiving wireless station. - View Dependent Claims (30, 31)
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Specification