Systems and methods for mitigating effects of an unresponsive secure element
AssigneeQUALCOMM Incorporated
InventorAshish Banthia
Life of this patent
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Abstract
A method is described. The method includes counting a number of successive information frame (I-frame) retransmissions due to a guard timer expiring. A contactless front-end (CLF) transmits the I-frame to a secure element (SE) over a single wire protocol (SWP) interface. The method also includes discontinuing I-frame retransmission when the count equals a retransmission threshold. The method further includes deactivating the SWP interface.
Claims30
A method, comprising:
- counting a number of successive information frame (I-frame) retransmissions due to a guard timer expiring, wherein a contactless front-end (CLF) transmits the I-frame to a secure element (SE) over a single wire protocol (SWP) interface;
- discontinuing I-frame retransmission when the count equals a retransmission threshold;
- and
- deactivating the SWP interface.
An electronic device, comprising:
- a processor;
- memory in electronic communication with the processor;
- and
- instructions stored in the memory, the instructions being executable by the processor to:
- maintain a counter that counts a number of successive information frame (I-frame) retransmissions due to a guard timer expiring, wherein a contactless front-end (CLF) transmits the I-frame to a secure element (SE) over a single wire protocol (SWP) interface;
- discontinue I-frame retransmission when the counter equals a retransmission threshold;
- and
- deactivate the SWP interface.
An apparatus, comprising:
- means for counting a number of successive information frame (I-frame) retransmissions due to a guard timer expiring, wherein a contactless front-end (CLF) transmits the I-frame to a secure element (SE) over a single wire protocol (SWP) interface;
- means for discontinuing I-frame retransmission when the count equals a retransmission threshold;
- and
- means for deactivating the SWP interface.
A computer-program product, the computer-program product comprising a non-transitory computer-readable medium having instructions thereon, the instructions comprising:
- code for causing an electronic device to count a number of successive information frame (I-frame) retransmissions due to a guard timer expiring, wherein a contactless front-end (CLF) transmits the I-frame to a secure element (SE) over a single wire protocol (SWP) interface;
- code for causing the electronic device to discontinue I-frame retransmission when the count equals a retransmission threshold;
- and
- code for causing the electronic device to deactivate the SWP interface.
Dependencies are inferred from the claim text.