CN105376420A - System and method for saving power consumption of SIM card in sleep mode - Google Patents
System and method for saving power consumption of SIM card in sleep mode Download PDFInfo
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- CN105376420A CN105376420A CN201410438993.0A CN201410438993A CN105376420A CN 105376420 A CN105376420 A CN 105376420A CN 201410438993 A CN201410438993 A CN 201410438993A CN 105376420 A CN105376420 A CN 105376420A
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- sim card
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention relates to the technical field of electronic communication, and specifically relates to a SIM card system. The system for saving the power consumption of a SIM card in the sleep mode comprises a power supply module for providing work voltage for the SIM card in the work mode of the system, a general input/output port used for providing the work voltage for the SIM card in the sleep mode of the system, and a change-over switch for switching the general input/output port to be connected with a power supply port of the SIM card or switching an output terminal of the power supply module to be connected to the power supply port of the SIM card under the effect of a first control signal. According to the system and the method, the general input/output port is employed to replace the power supply module for power supply in the sleep mode, when the SIM card needs normal operation, the power supply module is turned on to provide normal work current, and the power consumption of the system is reduced to the maximum.
Description
Technical field
The present invention relates to technical field of electronic communication, be specifically related to a kind of SIM card system.
Background technology
SIM (SubscriberIdentityModule, subscriber identification module) card be module important in mobile communication system, save customized information and the network-related data of user, in order to the power consumption of the system of saving, SIM card usually needs to enter sleep state or power down mode, to save electric current, the power supply module of SIM card is mainly used in providing power supply to SIM card, in prior art, after SIM card enters sleep state, power supply module still needs to open, to maintain SIM card drive current in a sleep state, but the unlatching of power supply module can cause power loss.
Summary of the invention
The object of the invention is to, a kind of system of saving SIM card sleep state power consumption is provided, solves above technical problem;
The present invention also aims to, a kind of method of saving SIM card sleep state power consumption is provided, solves above technical problem.
Technical problem solved by the invention can realize by the following technical solutions:
Save the system of SIM card sleep state power consumption, wherein, comprise,
Power supply module, provides operating voltage to SIM card under working state of system;
General input/output port, provides operating voltage to described SIM card under system sleep state;
Diverter switch, switches the power port that described general input/output port is connected to described SIM card under the effect of one first control signal, or the output switching described power supply module is connected to the power port of described SIM card.
Preferably, described general input/output port comprises the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, described first metal-oxide-semiconductor and described second metal-oxide-semiconductor are series between a supply voltage and earth terminal, and described first metal-oxide-semiconductor and described second metal-oxide-semiconductor selectively export high level signal or low level signal under one second control signal effect.
Preferably, described power supply module adopts low pressure difference linear voltage regulator.
Preferably, also comprise an input-output unit, described input-output unit is connected with described SIM card signal; The power supply end of described input-output unit is connected with described power port.
Preferably, described general input/output port comprises a control end, and described control end adjusts the size being supplied to the drive current of described SIM card under the effect of a conditioning signal.
Preferably, comprise an output control unit, the type according to external command produces described first control signal, and/or described second control signal.
Preferably, described external command is produced by a baseband processor, and described baseband processor is connected with described output control unit.
The present invention also provides a kind of method of saving SIM card sleep state power consumption, wherein, is applied to the system of above-mentioned saving SIM card sleep state power consumption, comprises and enter dormant step:
Step 1, under the effect of a sleep commands, general input/output port exports high level signal;
Step 2, diverter switch switches under a first control signal effect produced by described sleep commands, and general input/output port is connected to the power port of SIM card to provide dormant operating voltage;
Step 3, power supply module enters sleep pattern.
Preferably, also comprise the step waken up from sleep state, specific as follows:
Step 4, under the effect of a wake command, power supply module is activated;
Step 5, diverter switch switches under a first control signal effect produced by described wake command, and the power port of power supply model calling SIM card is to provide the operating voltage of operating state;
Step 6, general input/output port is output low level signal under a second control signal effect produced by described wake command.
beneficial effect: owing to adopting above technical scheme, the present invention adopts general input/output port to replace power supply module for power supply when sleep state, when SIM card needs normally to work, then open power supply module to provide running current, at utmost reduce system power dissipation.
Accompanying drawing explanation
Fig. 1 is electrical block diagram of the present invention;
Fig. 2 of the present inventionly enters dormant flow chart;
Fig. 3 is the flow chart waken up from sleep state of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite of not making creative work, all belongs to the scope of protection of the invention.
It should be noted that, when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.
Below in conjunction with the drawings and specific embodiments, the invention will be further described, but not as limiting to the invention.
With reference to Fig. 1, save the system of SIM card sleep state power consumption, wherein, comprise,
Power supply module 1, provides operating voltage to SIM card 3 under working state of system;
General input/output port 5, provides operating voltage to SIM card 3 under system sleep state;
Diverter switch, switches the power port that general input/output port 5 is connected to SIM card 3 under the effect of one first control signal, or the output switching power supply module 1 is connected to the power port of SIM card 3.
After the present invention enters sleep (Sleep) state according to SIM card, the electric current needed is very little, roughly at about 20 microamperes, and general input/output port (GeneralPurposeInput/Output, GPIO) 5 electric currents that can drive 2-24 milliampere, and the power consumption of self is very low again, adopt general input/output port to replace power supply module 1 to power, when SIM card needs normally to work, open power supply module again to provide running current, maximum possible reduces system power dissipation.
As a kind of preferred embodiment of the present invention, general input/output port 5 can comprise the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, first metal-oxide-semiconductor and the second metal-oxide-semiconductor are series between a supply voltage and earth terminal, and the first metal-oxide-semiconductor and the second metal-oxide-semiconductor selectively export high level signal or low level signal under one second control signal effect.
As a kind of preferred embodiment of the present invention, the first metal-oxide-semiconductor of the present invention can be P channel MOS tube P1, and the second metal-oxide-semiconductor of the present invention can be N-channel MOS pipe N1, and the grid of the second metal-oxide-semiconductor connects an inverter.Under the second control signal effect during the first metal-oxide-semiconductor conducting, the second metal-oxide-semiconductor cut-off, or during the first metal-oxide-semiconductor cut-off, the second metal-oxide-semiconductor conducting, to export high level signal or low level signal.
When the present invention needs general input/output port 5 to power, under the second control signal effect, general input/output port 5 exports high level signal; When not needing general input/output port 5 to power, general input/output port 5 output low level signal under the second control signal effect.
As a kind of preferred embodiment of the present invention, general input/output port 5 can comprise a control end, and control end adjusts the size being supplied to the drive current of SIM card 3 under the effect of a conditioning signal.Particularly, conditioning signal can be produced by baseband processor, as the DriverStrength signal in Fig. 1, to adjust the size of drive current.Supply voltage of the present invention can be 3V or 1.8V, and the operating voltage different according to different SIM calorie requirement is arranged flexibly.
As a kind of preferred embodiment of the present invention, power supply module 1 can adopt low pressure difference linear voltage regulator SIMLDO.Low pressure difference linear voltage regulator (LDO, LowDropoutregulator) can realize that less input/output voltage is poor, circuit structure is simple, it is little and without switching noise to take printed circuit board area.
As a kind of preferred embodiment of the present invention, can also comprise an input-output unit, input-output unit is connected with SIM card 3 signal; The power supply end of input-output unit is connected with power port.
Under the present invention can realize sleep state, general input/output port 5 is simultaneously for input-output unit and SIM card provide operating voltage.Input-output unit is connected between SIM card controller and SIM card 3 usually, and input-output unit is connected to the corresponding port of SIM card 3 respectively by clock cable SIMCLK, data signal line SIMDATA and reseting signal line SIMRESET.
As a kind of preferred embodiment of the present invention, comprise an output control unit, the type according to external command produces the first control signal, and/or the second control signal.
As a kind of preferred embodiment of the present invention, external command is produced by a baseband processor, and baseband processor is connected with output control unit.Baseband processor can be ARM chip or digital signal processing chip.
First control signal of the present invention and the second control signal also directly can be produced by baseband processor.
The present invention also provides a kind of method of saving SIM card sleep state power consumption, wherein, is applied to the system of above-mentioned saving SIM card sleep state power consumption, with reference to Fig. 2, comprises and enters dormant step:
Step 1, under the effect of a sleep commands, general input/output port exports high level signal;
Step 2, diverter switch switches under a first control signal effect produced by sleep commands, and general input/output port is connected to the power port of SIM card to provide dormant operating voltage;
Step 3, power supply module enters sleep pattern.
As a kind of preferred embodiment of the present invention, also comprise the step waken up from sleep state, with reference to Fig. 3, specific as follows:
Step 4, under the effect of a wake command, power supply module is activated;
Step 5, diverter switch switches under a first control signal effect produced by wake command, and the power port of power supply model calling SIM card is to provide the operating voltage of operating state;
Step 6, general input/output port is output low level signal under a second control signal effect produced by wake command.
A kind of embodiment of the present invention, when system needs to enter sleep state, external command Powerdown is low level voltage, general input/output port output high level voltage, diverter switch switches general input/output port and is connected to SIM card and provides operating voltage under the first control signal effect, and power supply module enters sleep state.
When needs wake up to normal operating conditions, external command Powerdown is high level voltage, power supply module is activated as normal operating conditions, diverter switch switches power supply model calling under the first control signal effect provides operating voltage to SIM card, now, general input/output port output low level voltage.
The present invention adopts general input/output port to replace power supply module for power supply when sleep state, when SIM card needs normally to work, then open power supply module to provide running current, at utmost reduce system power dissipation.
The foregoing is only preferred embodiment of the present invention; not thereby embodiments of the present invention and protection range is limited; to those skilled in the art; should recognize and all should be included in the scheme that equivalent replacement done by all utilizations specification of the present invention and diagramatic content and apparent change obtain in protection scope of the present invention.
Claims (9)
1. save the system of SIM card sleep state power consumption, it is characterized in that, comprise,
Power supply module, provides operating voltage to SIM card under working state of system;
General input/output port, provides operating voltage to described SIM card under system sleep state;
Diverter switch, switches the power port that described general input/output port is connected to described SIM card under the effect of one first control signal, or the output switching described power supply module is connected to the power port of described SIM card.
2. the system of saving SIM card sleep state power consumption according to claim 1, it is characterized in that, described general input/output port comprises the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, described first metal-oxide-semiconductor and described second metal-oxide-semiconductor are series between a supply voltage and earth terminal, and described first metal-oxide-semiconductor and described second metal-oxide-semiconductor selectively export high level signal or low level signal under one second control signal effect.
3. the system of saving SIM card sleep state power consumption according to claim 1, is characterized in that, described power supply module adopts low pressure difference linear voltage regulator.
4. the system of saving SIM card sleep state power consumption according to claim 1, it is characterized in that, also comprise an input-output unit, described input-output unit is connected with described SIM card signal;
The power supply end of described input-output unit is connected with described power port.
5. the system of saving SIM card sleep state power consumption according to claim 1, it is characterized in that, described general input/output port comprises a control end, and described control end adjusts the size being supplied to the drive current of described SIM card under the effect of a conditioning signal.
6. the system of saving SIM card sleep state power consumption according to claim 1 and 2, is characterized in that, comprise an output control unit, and the type according to external command produces described first control signal, and/or described second control signal.
7. the system of saving SIM card sleep state power consumption according to claim 6, is characterized in that, described external command is produced by a baseband processor, and described baseband processor is connected with described output control unit.
8. save the method for SIM card sleep state power consumption, it is characterized in that, be applied to the system of saving SIM card sleep state power consumption according to claim 1, comprise and enter dormant step:
Step 1, under the effect of a sleep commands, general input/output port exports high level signal;
Step 2, diverter switch switches under a first control signal effect produced by described sleep commands, and general input/output port is connected to the power port of SIM card to provide dormant operating voltage;
Step 3, power supply module enters sleep pattern.
9. the method for saving SIM card sleep state power consumption according to claim 8, is characterized in that, also comprise the step waken up from sleep state, specific as follows:
Step 4, under the effect of a wake command, power supply module is activated;
Step 5, diverter switch switches under a first control signal effect produced by described wake command, and the power port of power supply model calling SIM card is to provide the operating voltage of operating state;
Step 6, general input/output port is output low level signal under a second control signal effect produced by described wake command.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410438993.0A CN105376420B (en) | 2014-08-29 | 2014-08-29 | Save the system and method for SIM card sleep state power consumption |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410438993.0A CN105376420B (en) | 2014-08-29 | 2014-08-29 | Save the system and method for SIM card sleep state power consumption |
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| CN105376420A true CN105376420A (en) | 2016-03-02 |
| CN105376420B CN105376420B (en) | 2019-07-23 |
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| WO2017201931A1 (en) * | 2016-05-23 | 2017-11-30 | 中兴通讯股份有限公司 | Method and device for reducing power consumption of terminal, and smart card |
| CN108875881A (en) * | 2017-05-11 | 2018-11-23 | 展讯通信（上海）有限公司 | SIM card method for controlling power supply, device and mobile terminal |
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| CN105376420B (en) | 2019-07-23 |
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