POSITIONING GUIDANCE FOR INCREASING RELIABILITY OF NEAR-FIELD COMMUNICATIONS

摘要

To promote ease of use, as well as a reduction in bit error rates during extended data exchange between a coupled NFC tag/reader pair, signal strength is measured from a plurality of NFC tag antennas each positioned differently with respect to a common reader field, and differences in signal strength are used to determine an optimum positioning of the tag, or tag emulator, with respect to the reader. Alternative embodiments may include signal time of flight for determining orientation of the NFC antennas within the reader field. Information is generated by the tag, or tag emulator, and output by the tag, or tag emulator, such that a user may direct the positioning of the tag, or tag emulator, for improved communication with the reader.

主权项

1. A method of operating a near field communication (NFC)-enabled device, comprising:
detecting, by the NFC-enabled device, a respective current in each of a plurality of NFC antennas in an NFC antenna array, the respective currents induced by a common NFC reader field; and determining, based at least in part on the magnitude of each of the respective currents, if changing a position of the NFC-enabled device would improve communicative interaction with the NFC reader field; wherein the NFC antenna array is disposed on the NFC-enabled device, and the plurality of NFC antennas are arranged symmetrically with respect to each other.