METHODS AND APPARATUS FOR IMPROVING THE IDENTIFICATION OF MULTIPLE NFC-A DEVICES
First Claim
1. A method of wireless communications, comprising:
- determining that a first device sensing response message includes one or more collisions among a plurality of remote near field communication (NFC) devices;
identifying a first remote NFC device of the plurality of remote NFC devices by performing collision resolution on the first device sensing response message;
transmitting a sleep request message to the first remote NFC device that prohibits the first remote NFC device from responding to a first device sensing request message;
transmitting the first device sensing request message;
receiving a second device sensing response message that includes collisions among the plurality of remote NFC devices; and
identifying a second remote NFC device of the plurality of remote NFC devices by performing collision resolution on the second device sensing response message.
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Abstract
Aspects disclosed herein relate to improving technology detection and collision resolution among multiple NFC devices using a NFC type-A RF technology. In one example, a communications device is equipped to determine that a first device sensing response message includes one or more collisions, identify a first remote NFC device of the plurality of remote NFC devices by performing collision resolution on the first device sensing response message, transmit a sleep request message to the first remote NFC device that prohibits the first remote NFC device from responding to a first device sensing request message and the first device sensing request message, receive a second device sensing response message that includes collisions among the plurality of remote NFC devices, and identify a second remote NFC device of the plurality of remote NFC devices by performing collision resolution on the second device sensing response message.
33 Citations
40 Claims
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1. A method of wireless communications, comprising:
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determining that a first device sensing response message includes one or more collisions among a plurality of remote near field communication (NFC) devices; identifying a first remote NFC device of the plurality of remote NFC devices by performing collision resolution on the first device sensing response message; transmitting a sleep request message to the first remote NFC device that prohibits the first remote NFC device from responding to a first device sensing request message; transmitting the first device sensing request message; receiving a second device sensing response message that includes collisions among the plurality of remote NFC devices; and identifying a second remote NFC device of the plurality of remote NFC devices by performing collision resolution on the second device sensing response message. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A computer program product, comprising:
a computer-readable medium comprising code for; determining that a first device sensing response message includes one or more collisions among a plurality of remote near field communication (NFC) devices; identifying a first remote NFC device of the plurality of remote NFC devices by performing collision resolution on the first device sensing response message; transmitting a sleep request message to the first remote NFC device that prohibits the first remote NFC device from responding to a first device sensing request message; transmitting the first device sensing request message; receiving a second device sensing response message that includes collisions among the plurality of remote NFC devices; and identifying a second remote NFC device of the plurality of remote NFC devices by performing collision resolution on the second device sensing response message. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An apparatus for communications, comprising:
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means for determining that a first device sensing response message includes one or more collisions among a plurality of remote near field communication (NFC) devices; means for identifying a first remote NFC device of the plurality of remote NFC devices by performing collision resolution on the first device sensing response message; means for transmitting a sleep request message to the first remote NFC device that prohibits the first remote NFC device from responding to a first device sensing request message; wherein the means for transmitting is further configured to transmit the first device sensing request message; means for receiving a second device sensing response message that includes collisions among the plurality of remote NFC devices; and wherein the means for identifying is further configured to identify a second remote NFC device of the plurality of remote NFC devices by performing collision resolution on the second device sensing response message. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. An apparatus for NFC communications, comprising:
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a transceiver; a memory; a processor coupled to the memory; and a NFC technology detection module coupled to at least one of the memory or the processor and configured to; determine that a first device sensing response message includes one or more collisions among a plurality of remote near field communication (NFC) devices; and identify a first remote NFC device of the plurality of remote NFC devices by performing collision resolution on the first device sensing response message; wherein the transceiver is configured to; transmit a sleep request message to the first remote NFC device that prohibits the first remote NFC device from responding to a first device sensing request message; transmit the first device sensing request message; and receive a second device sensing response message that includes collisions among the plurality of remote NFC devices; and wherein the NFC technology detection module is further configured to; identify identifying a second remote NFC device of the plurality of remote NFC devices by performing collision resolution on the second device sensing response message. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification