Emulation of multiple devices in an NFC device

摘要

A method in a signal generating unit, SGU, generates a signal to be used in a Near-Field Communication, NFC, reader. The SGU is configured to communicate with an NFC controller unit, NFC-CU, and with an NFC-Wired Interface unit, NFC-WIU. The NFC-CU and the SGU are included in an NFC device, and the NFC-WIU is connected to the NFC device. The SGU receives a first signal that includes data encoding information indicating a first unique identifier supported by the NFC-CU, from the NFC-CU, and a second signal that includes data encoding information indicating a second unique identifier supported by the NFC-WIU, from the NFC-WIU. The SGU generates a third signal to be used in the NFC reader to generate a collision sequence, based on the first signal and the second signal. An SGU configured to perform the method, and a NFC device that includes the SGU are also provided.

主权项

1. A method in a signal generating unit for generating a signal to be used in a Near-Field Communication (NFC) reader, the method comprising:
receiving, by the signal generating unit, a first signal from a Near-Field Communication (NFC) controller unit, the first signal including first data encoding information indicating a first unique identifier that is supported by the NFC controller unit, the signal generating unit being included in an NFC device and configured to communicate with the NFC controller unit and an NFC-Wired Interface unit, the NFC controller unit being included in the NFC device, and the NFC-Wired Interface unit being connected to the NFC device; receiving, by the signal generating unit, a second signal from the NFC-Wired Interface unit, the second signal including second data encoding information indicating a second unique identifier that is supported by the NFC-Wired Interface unit; and generating, by the signal generating unit, a third signal by combining the first signal and the second signal, wherein the third signal is to be used in the NFC reader to generate a collision sequence, wherein the NFC controller unit emulates a card or device assigned the first unique identifier and performs polling, anti-collision, and selection procedures, and wherein the NFC-Wired Interface unit has an independent, standalone functionality for card or device emulation, which includes performing polling, anti-collision, and selection procedures.