Multiple NFC Card Applications in Multiple Execution Environments

摘要

A contactless system is described in which multiple execution environments may be coupled to a near field communication (NFC) controller, wherein each execution environment is configured to communicate with remote readers via the NFC controller using an assigned one of a plurality of communication protocols. During a polling session from a proximate reader, responding to a request command using a requested communication protocol and activating one of the plurality of execution environments assigned to the requested communication protocol to use the NFC controller. An arbitration is performed in response to each polling session such that a same combination of communication protocol and execution environment is not activated for adjacent polling sessions.

主权项

1. A method for granting access to a plurality of near field communication execution environments by a near field communication controller by, the method comprising:
deploying the plurality of execution environments for execution by a plurality of processors coupled to the near field communication (NFC) controller, wherein each execution environment is configured to communicate with remote readers via the NFC controller using an assigned one or more of a plurality of communication protocols; receiving periodic polling sessions from a remote reader, wherein each polling session includes one or more request commands to use a respective one or more of the plurality of communication protocols; during a polling session, responding to only one of the request commands using a requested communication protocol and granting access to one type of the plurality of execution environments assigned to the requested communication protocol to use the NFC controller; and performing an arbitration in response to each polling session such that a same combination of communication protocol and execution environment is not activated for adjacent polling sessions.