Coexistence between nfc and wct
OwnerShahar Porat, Gary N. Matos +2inventors
InventorsShahar Porat, Gary N. Matos, Adam D. Rea, Ron W. Gallahan
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Abstract
Two devices containing NFC radios may use some of the NFC components to permit one device to wirelessly charge a battery in the other device. Time sharing between the communication and charging, functions may allow the two devices to use the same frequency for both functions, without the charging, function causing interference in the communication function. One device may periodically transmit polls, with both a data exchange communication period and a charging period occurring between two successive polls. In some embodiments, a data exchange period using the NFC radios and a charging period using the charging circuitry do not overlap in time.
Claims30
A first wireless communications device having a processor, a memory, and a near field communication (NFC) radio, the first device adapted to
- transmit an NFC poll signal at predetermined intervals;
- and
- perform, after each poll signal:
- listening for an NFC response from a second wireless communication device:
- executing an NFC data exchange with the second device if the response is received;
- transmitting a charging signal;
- and
- stopping, the transmitting of the charging signal before another NFC poll signal is scheduled to occur;
- wherein the NFC data exchange and the charging signal do not overlap in time.
A method of wireless communication by a first wireless device, comprising:
- transmitting an NFC poll signal at predetermined intervals;
- and
- performing after each poll signal:
- listening;
- for an NFC response from a second wireless communication device;
- executing an NFC data exchange with the second device if the response is received;
- transmitting a charging signal;
- and
- stopping the transmitting of the charging signal before another NFC poll signal is scheduled to occur;
- wherein the NFC data exchange and the charging signal do not overlap in time.
A computer-readable non-transitory storage medium that contains instructions, which when executed by one or more processors result in performing operations comprising:
- transmitting an NFC poll signal from a first device at predetermined intervals;
- and
- performing, after each poll signal:
- listening for an NFC response from a second wireless communication device;
- executing an NFC data exchange with the second device if the response is received;
- transmitting a charging signal;
- and
- stopping the transmitting of the charging signal before another NFC poll signal is scheduled to occur;
- wherein the NFC data exchange and the charging, signal do not overlap in time.
A first wireless communication device having a processor, a memory, and a near Field communication (NFC) radio, the first device adapted to:
- perform an NFC data exchange with a second wireless communication device;
- and
- receive a charging signal from the second device;
- wherein the data exchange and the charging signal occur between two successive polls from the second device;
- wherein the data exchange and the charging signal do not overlap in time.
A method of communicating wirelessly by a first device, comprising:
- performing an NFC data exchange with a second wireless communication device;
- and
- receiving a charging signal from the second wireless communication device;
- wherein the data exchange and the charging signal occur between two successive polls from the second wireless communication device;
- wherein the data exchange and the charging signal do not overlap in time.
A computer-readable non-transitory storage medium that contains instructions, which when executed by one or more processors result in performing operations comprising:
- performing an NFC data exchange with a wireless communication device;
- and
- receiving a charging signal from the wireless communication device;
- wherein the data exchange and the charging signal occur between two successive polls from the wireless communication device;
- wherein the data exchange and the charging signal do not overlap in time.
Dependencies are inferred from the claim text.