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;
switching the receiving wireless station between power reception and data reception modes based on the control signals comprising a beacon frame providing scheduling information for switching between the power reception mode and the data reception mode; and
providing a power inter-frame space interval for generating RF transmission for powering wireless stations in the wireless networkwherein;
RF power transmission from one of the multiple wireless stations is processed as energy radiation for powering the receiving wireless station.
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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.
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Citations
30 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; switching the receiving wireless station between power reception and data reception modes based on the control signals comprising a beacon frame providing scheduling information for switching between the power reception mode and the data reception mode; and providing a power inter-frame space interval for generating RF transmission for powering wireless stations in the wireless network wherein; RF power transmission from one of the multiple wireless stations is processed as energy radiation for powering the receiving wireless station. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus for radio frequency (RF) power transmission in a wireless network including multiple wireless stations, comprising:
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a controller that operates in a receiving wireless station to generate control signals for switching the receiving wireless station between a power reception mode and a data reception mode based on receiving a beacon frame providing scheduling information for switching between the power reception mode and the data reception mode; 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 in the wireless network, and RF power transmission from one of the multiple wireless stations is processed as energy radiation for powering the receiving wireless station. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A wireless communication system for radio frequency (RF) power transmission, comprising:
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multiple wireless stations that form a wireless network; and a controller in a wireless station for RF power transmission, the controller including; a controller function that generates control signals for switching a receiving wireless station between a power reception mode and a data reception mode based on the receiving wireless station receiving a beacon frame providing scheduling information for switching between the power reception mode and the data reception mode; 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 in the wireless network, and a physical (PHY) layer for transmitting the generated RF transmission, and RF power transmission from the controller is processed as energy radiation for powering the receiving wireless station. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. An apparatus for receiving radio frequency (RF) power transmission in a wireless network including multiple wireless stations, comprising:
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a receiver that receives data, wherein the receiver generates control signals for switching between a power reception mode and a data reception mode, and receives a beacon frame providing scheduling information for switching between the power reception mode and the data reception mode; wherein; the receiver comprises a media access control (MAC) layer that provides a power inter-frame space interval for generating RF transmission for powering wireless stations in the wireless network, and RF power transmission from one of the multiple wireless stations is processed as energy radiation for powering the receiver.
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29. A method for receiving radio frequency (RF) power transmission in a wireless network including multiple wireless stations, the method comprising:
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receiving an RF wireless transmission; generating control signals for switching a receiving wireless station between a power reception mode and a data reception mode based on the received RF wireless transmission; receiving a beacon frame that provides scheduling information for switching between the power reception mode and the data reception mode; and switching the receiving wireless station between power reception and data reception modes based on the control signals, wherein; a power inter-frame space interval is used for generating the RF wireless transmission for powering wireless stations in the wireless network, and RF power transmission from one of the multiple wireless stations is processed as energy radiation for powering the receiving wireless station.
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30. A wireless node in a wireless network including multiple wireless stations, comprising:
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an interface that switches modes between a power reception circuit and a data reception circuit based on a control signal generated by a controller and a beacon frame providing scheduling information for switching between the power reception circuit and the data reception circuit; wherein; the interface comprises a media access control (MAC) layer that provides a power inter-frame space interval for generating RF transmission for powering wireless stations in the wireless network, and RF power transmission from one of the multiple wireless stations is processed as energy radiation for powering a receiving wireless station.
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Specification