NFC service processing method, terminal, and NFC chip

Patent metadata

Field	Value
Publication number	US-11200561-B2
Application number	US-201716618515-A
Country	US
Kind code	B2
Filing date	Jun 2, 2017
Priority date	Jun 2, 2017
Publication date	Dec 14, 2021
Grant date	Dec 14, 2021

Abstract

A method is applied to a first terminal, the first terminal includes a main processor and an NFC chip, and a first SE is integrated into and/or an HCE application is run on the main processor. The method includes: when the main processor of the first terminal is powered off, receiving, by the first terminal, an application selection instruction sent by a second terminal, where the application selection instruction is used to instruct to process an NFC service by using an application in the first SE or the HCE application; and after receiving the application selection instruction, controlling, by the first terminal, the main processor to be powered on, and routing the application selection instruction to the main processor, so that the main processor processes the NFC service.

First claim

What is claimed is:

1. A near field communication (NFC) service processing method, wherein the method is applied to a first terminal, the first terminal comprises a main processor and an NFC chip, and a first security element (SE) is integrated into and/or a host-based card emulation HCE application runs on the main processor; and
the method comprises:
when the main processor of the first terminal is powered off, receiving, by the first terminal, an application selection instruction sent by a second terminal, wherein the application selection instruction is used to instruct to process an NFC service by using an application in the first SE or the HCE application;
controlling, by the first terminal, the main processor to be powered on; and
routing, by the first terminal, the application selection instruction to the main processor, so that the main processor processes the NFC service;
wherein the first terminal further comprises a second SE, and the second SE and the main processor are independently configured; and
before the controlling, by the first terminal, the main processor to be powered on, the method further comprises:
determining, by the first terminal, whether an application identifier (AID) carried in the application selection instruction is an AID in a preset AID set, wherein the preset AID set comprises an AID of the application installed on the first SE and/or an AID of the HCE application; and
if the AID is an AID in the preset AID set, controlling, by the first terminal, the main processor to be powered on.

2. The method according to claim 1 , wherein before the controlling, by the first terminal, the main processor to be powered on, the method further comprises:
sending, by the first terminal, a time extension instruction to the second terminal, wherein the time extension instruction carries a to-be-extended duration, and the time extension instruction is used to instruct the second terminal to increase a waiting duration for communication, and the increased waiting duration is the to-be-extended duration.

3. The method according to claim 2 , wherein after the routing, by the first terminal, the application selection instruction to the main processor, the method further comprises:
when the first terminal has processed the NFC service, prompting, by the first terminal, a user that the NFC service has been processed.

4. The method according to claim 2 , wherein after the routing, by the first terminal, the application selection instruction to the main processor, the method further comprises:
when the first terminal has processed the NFC service, determining, by the first terminal, the current battery level; and
if the current battery level is greater than the threshold, prompting, by the first terminal, the user whether to turn off the first terminal; or
if the current battery level is less than the threshold, controlling, by the first terminal, the main processor to be powered off.

5. The method according to claim 1 , wherein the controlling, by the first terminal, the main processor to be powered on comprises:
determining, by the first terminal, a current battery level; and
if the current battery level is greater than a threshold, powering on and waking up, by the first terminal, the main processor in a first clock sequence; or
if the current battery level is less than the threshold, powering on and waking up, by the first terminal, the main processor in a second clock sequence, wherein
the first clock sequence is a turn-on-to-power-on sequence, and the second clock sequence is used to wake up only a module that is used to process the NFC service.

6. The method according to claim 5 , wherein after the routing, by the first terminal, the application selection instruction to the main processor, the method further comprises:
when the first terminal has processed the NFC service, prompting, by the first terminal, a user that the NFC service has been processed.

7. The method according to claim 5 , wherein after the routing, by the first terminal, the application selection instruction to the main processor, the method further comprises:
when the first terminal has processed the NFC service, determining, by the first terminal, the current battery level; and
if the current battery level is greater than the threshold, prompting, by the first terminal, the user whether to turn off the first terminal; or
if the current battery level is less than the threshold, controlling, by the first terminal, the main processor to be powered off.

8. The method according to claim 1 , wherein after the routing, by the first terminal, the application selection instruction to the main processor, the method further comprises:
when the first terminal has processed the NFC service, prompting, by the first terminal, a user that the NFC service has been processed.

9. The method according to claim 1 , wherein after the routing, by the first terminal, the application selection instruction to the main processor, the method further comprises:
when the first terminal has processed the NFC service, determining, by the first terminal, the current battery level; and
if the current battery level is greater than the threshold, prompting, by the first terminal, the user whether to turn off the first terminal; or
if the current battery level is less than the threshold, controlling, by the first terminal, the main processor to be powered off.

10. A terminal, wherein the terminal is used as a first terminal and comprises a near field communication (NFC) chip, a power management unit (PMU), and a main processor, and a first security element is disposed in or a host-based card emulation (HCE) application runs on the main processor,
the NFC chip is configured to: when the main processor is powered off, receive an application selection instruction sent by a second terminal, wherein the application selection instruction is used to instruct to process an NFC service by using an application in the first SE or the HCE application;
the NFC chip is further configured to send a power-on trigger signal to the PMU;
the PMU is configured to power on and wake up the main processor based on the power-on trigger signal sent by the NFC chip;
the NFC chip is further configured to route the application selection instruction to the main processor; and
the main processor is configured to process the NFC service;
wherein the first terminal further comprises a second SE, and the second SE and the main processor are independently configured; and
the NFC chip is further configured to: determine whether an application identifier (AID) carried in the application selection instruction is an AID in a preset AID set; and when the AID is an AID in the preset AID set, send the power-on trigger signal to the PMU, wherein the preset AID set comprises an AID of the application installed on the first SE and/or an AID of the HCE application.

11. The terminal according to claim 10 , wherein
the NFC chip is further configured to send a time extension instruction to the second terminal, wherein the time extension instruction carries a to-be-extended duration, and the time extension instruction is used to instruct the second terminal to increase a waiting duration for communication, and the increased waiting duration is the to-be-extended duration.

12. The terminal according to claim 11 , wherein
the main processor is further configured to: when having processed the NFC service, prompt a user that the NFC service has been processed.

13. The terminal according to claim 11 , wherein
the main processor is further configured to: when having processed the NFC service, determine the curren

Assignees

• Huawei Tech Co Ltd

Inventors

• Chang Xinmiao

Classifications

• Y02D30/70

  in wireless communication networks · CPC title

• H04B5/20

  characterised by the transmission technique; characterised by the transmission medium · CPC title

• G06Q20/3278 Primary

  RFID or NFC payments by means of M-devices · CPC title

• G06Q20/352

  Contactless payments by cards · CPC title

• H04W4/80 Primary

  Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication · CPC title