WO2013170809A1

WO2013170809A1 - Method and device for reducing power consumption of mobile terminal, and terminal thereof

Info

Publication number: WO2013170809A1
Application number: PCT/CN2013/078069
Authority: WO
Inventors: 邵文清; 张映俊
Original assignee: 中兴通讯股份有限公司
Priority date: 2012-10-19
Filing date: 2013-06-26
Publication date: 2013-11-21
Also published as: CN102929380B; CN102929380A

Abstract

Disclosed are a method and device for reducing power consumption of a mobile terminal, and a terminal thereof. The method comprises: detecting a working state signal of a mobile terminal; selecting a corresponding power saving mode according to the working state signal, setting a control pin of a digital baseband chip DBB according to the power saving mode, and controlling a power control pin of a power driving module PM, so that the PM enters the corresponding power saving mode. The present invention can turn off multiple power modules contained in the PM according to different working states of the mobile terminal, and make different normally open power modules enter a low power consumption mode, so that the mobile terminal has a longer sleep time, thereby significantly reducing the system power consumption, and prolonging the standby time of the mobile terminal.

Description

Method, device and terminal thereof for reducing power consumption of mobile terminal

The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, and a terminal thereof for reducing power consumption of a mobile terminal. Background technique

As the functions of mobile terminals (such as mobile phones) continue to strengthen and improve, it plays an increasingly important role in people's lives. Therefore, how to reduce the power consumption of mobile phones, so that the application standby time of mobile phones can be further The growth of the land has become one of the important issues that mobile phone manufacturers need to solve now.

In general, low-power solutions for mobile phones include: low power consumption in active state and low power consumption in idle state. Among them, the low power consumption in the working state refers to: Turn off the clock or power when some parts of the mobile phone are idle, in order to achieve the purpose of reducing power consumption, such as turning off the backlight when not using the backlight or keyboard of the mobile phone, without using the camera ( Camera) disables the power and clock of the camera module; low power consumption in idle state means: When the peripherals and applications of the entire mobile phone system are idle, the entire mobile phone system goes to sleep, that is, the mobile phone All clocks or power supplies that can be turned off are turned off, and those that cannot be turned off enter the low-power mode.

Therefore, how to enable the mobile phone to enter the corresponding low-power mode under various application scenarios, and turn off the corresponding clock or power supply is the key to realize low power consumption of the mobile phone.

The power management scheme provided by the prior art can only operate one power module at a time, and cannot turn off corresponding power modules according to different scenarios, so that multiple power modules enter a low power mode, thereby causing a large system power consumption. . For example, the power module of a power chip is turned off by writing the value to the power chip through an Inter-Integrated Circuit (I2C), so that the corresponding power module is turned off. However, the technical solution has certain disadvantages. : Operation I2C is more complicated, and it takes a certain time to shut down the power module by operating I2C, which will definitely reduce the sleep time of the mobile phone system. In addition, if you want to turn off multiple power modules at the same time, you need to operate I2C multiple times, which will greatly reduce the mobile phone. The sleep time of the system leads to an increase in power consumption, and also affects the operating timing of the system under the condition that the time requirement of the mobile phone system is relatively strict. Summary of the invention

In order to solve the problem in the prior art that the I2C needs to be operated multiple times, resulting in a decrease in system sleep time, so that the system power consumption is increased, an object of the present invention is to provide a method, an apparatus, and a terminal thereof for reducing power consumption of a mobile terminal.

In order to achieve the object of the present invention, the present invention is implemented by the following technical solutions:

A method for reducing power consumption of a mobile terminal, comprising:

Detecting a working status signal of the mobile terminal;

Selecting a corresponding power saving mode according to the working state signal, and setting a control pin of the digital baseband chip (DBB) according to the power saving mode, and controlling a power control pin of the power driving module (PM) to enable the PM to enter a corresponding Power saving mode.

Preferably, before the detecting the working state signal of the mobile terminal, the method for reducing power consumption of the mobile terminal further includes:

After the mobile terminal is powered on, configure the corresponding relationship between the corresponding power-saving modes adopted by the PM under different working states of the mobile terminal.

Preferably, the detecting the working status signal of the mobile terminal includes:

After the mobile terminal works normally and enters the corresponding working mode, the state foot of the DBB is set; the state foot of the DBB is detected, and the working state signal of the mobile terminal is obtained.

Preferably, the method for reducing power consumption of the mobile terminal further includes:

The PM feeds back the power saving mode information currently taken by itself to the DBB.

When an interrupt signal is detected, the mobile terminal exits the power saving mode. A device for reducing power consumption of a mobile terminal, comprising:

a power management unit, configured to detect a working state signal of the mobile terminal; select a corresponding power saving mode according to the working state signal, and set a DBB control pin according to the power saving mode to control a power control pin of the PM, so that PM enters the corresponding power saving mode;

The PM is used to enter the corresponding power saving mode under the control of the power management unit's power control pin of the PM.

Preferably, the power management unit includes:

a status signal detecting module, configured to detect an operating status signal of the mobile terminal, and send the detected working status signal of the mobile terminal to the power saving mode setting module;

The power saving mode setting module is configured to: after receiving the working state signal of the mobile terminal sent by the state signal detecting module, select a corresponding power saving mode according to the working state signal, and set a DBB control pin according to the power saving mode; , Control the PM's power control pin to put the PM into the corresponding power saving mode.

Preferably, the power saving mode setting module is further configured to: after the mobile terminal is powered on, configure a corresponding relationship of the corresponding power saving mode adopted by the mobile terminal in different working states.

Preferably, the status signal detecting module is specifically configured to: after the mobile terminal works normally and enter a corresponding working mode, set a status foot of the DBB; and detect a status foot of the DBB to obtain an operating status signal of the mobile terminal.

Preferably, the PM is further used to feed back the power saving mode information currently taken by itself to the DBB. A mobile terminal, comprising the apparatus for reducing power consumption of a mobile terminal as described above, the apparatus comprising:

PM, used to enter the corresponding power control unit under the control of the PM power control pin Power saving mode.

It can be seen that the foregoing technical solution of the present invention can enable multiple power modules included in the PM to be shut down according to different working states of the system, and multiple different normally open power modules enter a low power mode (for example, PFM low power consumption). Mode), which can make the mobile terminal have more time to sleep, which greatly reduces the system power consumption and prolongs the standby time of the mobile terminal (such as mobile phone). DRAWINGS

1 is a schematic flowchart of a method for reducing power consumption of a mobile terminal according to an embodiment of the present invention; FIG. 2 is a schematic structural diagram of an apparatus for reducing power consumption of a mobile terminal according to an embodiment of the present invention; FIG. 3 is a schematic diagram of an apparatus according to an embodiment of the present invention. The schematic diagram of the process of setting different low power modes according to the power management module in practical applications.

The implementation, functional features and advantageous effects of the object of the present invention will be further described below in conjunction with the specific embodiments and the accompanying drawings. detailed description

The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings and specific embodiments to enable those skilled in the art to understand the invention. .

As shown in FIG. 1, a method for reducing power consumption of a mobile terminal according to an embodiment of the present invention includes the following steps:

S20. Detect an operating status signal of the mobile terminal.

S30. Select a corresponding power saving mode according to the working state signal, and set a DBB control pin according to the power saving mode, and control the PM power control pin to cause the PM to enter a corresponding power saving mode.

In this embodiment, before the step S20 is performed, the method for reducing power consumption of the mobile terminal further includes: S10. After the mobile terminal is powered on, configure a correspondence between the corresponding power-saving modes adopted by the PM in different working states of the mobile terminal. For example, each power-saving mode causes the power modules of the PM to be in a closed state, or in a pulse frequency modulation (PFM) state, or in a normal working state according to different application scenarios (the power saving mode cannot be used at this time). effect).

In this embodiment, in the step S20, the step of detecting the working status signal of the mobile terminal includes:

5201. After the mobile terminal works normally and enters a corresponding working mode, setting a status foot of the DBB;

5202. Detect a status foot of the DBB, and obtain a working status signal of the mobile terminal.

In this embodiment, after the performing step S30, the method for reducing power consumption of the mobile terminal further includes:

S40 and PM feed back the power saving mode information currently taken by the PM to the DBB.

In this embodiment, after the performing step S40, the method for reducing power consumption of the mobile terminal further includes:

S50. When an interrupt signal is detected, the mobile terminal exits the power saving mode.

Referring to FIG. 2, an apparatus for reducing power consumption of a mobile terminal according to an embodiment of the present invention includes: a power management unit, configured to detect an operating state signal of the mobile terminal; and selecting a corresponding power saving mode according to the working state signal, and Setting a DBB control pin according to the power saving mode, controlling a PM power control pin to cause the PM to enter a corresponding power saving mode;

In this embodiment, the power management module may further include:

a power saving mode setting module, configured to receive a mobile terminal sent by the status signal detecting module After the status signal is generated, the corresponding power saving mode is selected according to the working state signal, and the control pin of the DBB is set according to the power saving mode, and the power control pin of the PM is controlled to enter the corresponding power saving mode.

The power saving mode setting module is further configured to: after the mobile terminal is powered on, configure a corresponding relationship of the corresponding power saving mode adopted by the mobile terminal in different working states.

For example, each power-saving mode causes the power modules of the PM to be either in the off state, in the PFM state, or in the normal working state according to different application scenarios (in this case, the power saving mode is ineffective).

In this embodiment, the step of detecting, by the status signal detecting module, the working status signal of the mobile terminal includes:

1) After the mobile terminal works normally and enters the corresponding working mode, set the state foot of the DBB; 2) detect the state foot of the DBB, and obtain the working state signal of the mobile terminal.

In this embodiment, the PM is further used to feed back the power saving mode information that is currently taken by itself to the DBB.

As can be seen from the technical solution of the method and apparatus for reducing the power consumption of the mobile terminal provided by the embodiment of the present invention, with reference to FIG. 2, the embodiment of the present invention designs a PM-CRTL-MDL power management unit (PPP2), where PM—CRTL—The MDL Power Management Unit (PPP2) consists of two modules: Power Save Mode Setup Module (PPP4) and Status Signal Detection Module (PPP3). In addition, PM (PPP5) power control pins and DBB (PPP1) The control pins are connected.

The power saving mode setting module (PPP4) sets various power saving modes of PM (PPP5). When power-on initialization, configure the working status of each power module of PM (PPP5) in various power saving modes, each province The electrical mode allows the power modules of the PM (PPP5) to be either in the off state, in the PFM state, or in the normal working state according to different application scenarios.

After detecting the working state signal of the mobile terminal, the state signal detecting module (PPP3) sends the detected working state signal of the mobile terminal to the power saving mode setting module (PPP4), and the power saving mode setting module (PPP4) operates according to the work. The status signal selects the corresponding power saving mode, and the root According to the power-saving mode, set the DBB (PPP1) control pin, control the PM (PPP5) power control pin, and make the corresponding power-saving mode take effect, so that each BUCK:, LDO and DCDC of PM (PPP5) enters the corresponding Low power mode, and PM (PPP5) feeds back the current power saving mode to the PM-CTRL-MDL power management unit (PPP2).

When there is an interruption, the hardware automatically restores the normal (BPP, LDO, and DCDC) modes of the PM (PPP5). In this way, multiple power modules can be shut down according to different scenarios, and multiple different normally-on power modules enter a low-power mode, and the system can have more time to sleep, thereby greatly reducing system power consumption and extending the standby time of the mobile phone. .

Referring to FIG. 3, FIG. 3 is a schematic flowchart of setting a different low power mode according to a power management module in an actual application according to the present invention.

The following describes the process of the system entering different low power consumption according to Figure 3:

Step S210: Power on, during initialization, the power saving mode setting module (PPP4) configures the working states of the PM power modules in various power saving modes; each power saving mode makes PM (PPP5) different according to different application scenarios. The power module is either in the off state, in the PFM state, or in the normal working state (the power saving mode does not work);

Step S220: The mobile terminal works normally, enters a certain working mode, and sets a state foot of the DBB (PPP1);

Step S230: The status signal detecting module (PPP3) detects the status foot of the DBB (PPP1), and notifies the power saving mode setting module (PPP4) to enter the corresponding power saving mode;

Step S240: The power saving mode setting module (PPP4) determines the entering power saving mode according to the state foot of the DBB (PPP1) detected by the state signal detecting module (PPP3), and sets the control pin of the DBB (PPP1) to control the PM. The power control pin of (PPP5) puts PM (PPP5) into the corresponding power saving mode;

Step S250: PM (PPP5) detects the state of the power control pin, and the hardware automatically activates the working mode of each power module of the PM (PPP5) in the power saving mode in step S240, PM (PPP5) direction The PM CRTL MDL power management unit (PPP2) feeds back the currently entered power saving mode; Step S260: When the interrupt comes, the mobile terminal exits the power saving mode, and the hardware automatically causes each BUCK, LDO, and DCDC of the PM (PPP5) to be in the normal working mode. ;

Next, the mobile terminal repeats steps S220 to S260, thereby causing the mobile terminal to continuously enter a low power consumption state.

In the specific implementation, the control pins of DBB (PPP1) can be various. Here, the control pins of DBB (PPP1) are General Purpose Input/Output (GPIO), and the number of GPIOs is based on PM. (PPP5) The number of power control pins is determined. It is possible to have several PM (PPP5) power control pins for PM (PPP5) depending on the requirements. According to the number of power control pins provided by PM (PPP5), 2 ^M power saving modes can be set for 2 ^M different application scenarios.

For example, suppose PM (PPP5) has three power control pins, PWR 3, PWR 2, and PWR 1, respectively. Then DBB (PPP1) GPIO 3, GPIO 2, and GPI0 1 are respectively connected to the power control pin PWR. 3. PWR 2 and PWR 1 are connected. At this time, 8 power saving modes can be set in the power saving mode setting module (PPP4), which can be used in 8 different working scenarios. For example, it can be set here:

Power saving mode 1 : PWR 3, PWR 2, PWR 1 is 000, when the mobile terminal is in the idle state of the whole machine, all peripherals are not used;

Power saving mode 2: PWR 3, PWR 2, PWR 1 is 001, when MP3 is playing, there is no other operation;

Power saving mode 3: PWR 3, PWR 2, PWR 1 is 010, play mobile phone board game; Power saving mode 4: PWR 3, PWR 2, PWR 1 is 011, the physical layer has tasks, and the microprocessor (ARM, Advanced RISC Machines) No task enters WFI, Wait for Interrupt sleep mode;

Power saving mode 5: PWR 3, PWR 2, PWR 1 is 100, during the call;

PWR 3, PWR 2, PWR 1 are 101, 110: The reservation can be set according to the specific situation; PWR 3, PWR 2, PWR 1 is 111: Normal operation mode, all power supplies are in normal working mode.

Here, PM (PPP5) is supported by the following power modules:

BUCK1: powering the core;

BUCK2: powering the firmware MEMERY;

LDO 1: Powering the PM (PPP5) internal digital power supply;

LDO 2: powering the camera;

LD0 3: powering the 26M crystal oscillator;

LDO 4: powering the codec (CODEC);

LD0 5: Powering the radio frequency (RF, Radio Frequency);

The outside has the following DCDC power supply:

DCDC: Powers the keyboard backlight and LCD backlight;

It is worth noting that the power supply status of each PM is determined by the type of PM. The external DCDC power supply can also be determined on a case-by-case basis.

In the following, according to FIG. 3, when the mobile terminal is playing MP3 and there is no other operation, the whole machine can enter the power consumption process:

Step S210: Power on, initial power saving mode setting module (PPP4) configure power supply mode 1, power saving mode 2, power saving mode 3, power saving mode 4, power saving mode 5 PM (PPP5) The working state of the module, each mode of power saving makes PM (PPP5) modes ineffective according to different application scenarios);

Step S220: The mobile terminal works normally. After the user plays the MP3 and does not perform any operation, the mobile terminal enters a standby state, generates a whole machine idle signal and an MP3 play signal, and sets a state foot of the DBB (PPP1) to idle the whole machine and play MP3. ;

Step S230: The status signal detecting module (PPP3) detects the status foot of the DBB (PPP1) If the whole machine is idle and MP3 is played, the power saving mode setting module (PPP4) is notified to enter the power saving mode 2; Step S240: The power saving mode setting module (PPP4) determines to enter the power saving mode 2 according to the state foot of the DBB (PPP1), And set DBB (PPP1) control pins GPI03, GPI02, GPIO 1 to 001, then PM (PPP5) power control leads PPWR3, PWR2, PWR1 to 001; Step S250: PM (PPP5) detects power control pin PWR3 , PWR2, PWR 1 is 001, hardware automatically makes power saving mode 2 effective, PM (PPP5) CODEC power supply LDO 4 does not turn off, camera power supply LDO 2, 26M crystal power supply LDO 3, RF power supply LD05 and backlight The power supply DCDC is turned off, the core power supply BUCK1, MEMERY power supply BUCK2 and PM (PPP5) internal digital power supply LDO 1 enter PFM mode, PM (PPP5) feeds back to the PM_CTRL_MDL power management unit (PPP2) to enter the power saving mode 2;

Step S260: When the interrupt comes, the mobile terminal exits the power saving mode 2, and the hardware automatically causes each BUCK, LDO, and DCDC of the PM (PPP5) to be in the normal working mode;

When the mobile terminal enters a certain working mode again, the status pin of DBB (PPP1) is set, and the status signal detecting module (PPP3) detects the status pin again.

Steps S220 through S260 are repeated to continuously enter a low power consumption state.

Next, according to FIG. 3, when the physical layer has tasks, such as when performing 2G and 3G measurements, and the ARM side has no tasks, the mobile terminal enters the WFI sleep mode low-power process:

Step S210: Power on, initial power saving mode setting module (PPP4) Configure power saving mode 1, power saving mode 2, power saving mode 3, power saving mode 4, power saving mode 5 PM (PPP5) The working state of the module, each mode of power saving makes PM (PPP5) modes ineffective according to different application scenarios);

Step S220: The mobile terminal works normally, the physical layer: 2G, 3G measurement, and the ARM side has no task, the mobile terminal enters the WFI sleep mode to generate the WFI standby signal, and sets the state foot of the DBB (PPP1) to WFI standby; Step S230: The status signal detecting module (PPP3) detects that the status pin of the DBB (PPP1) is WFI standby, and notifies the power saving mode setting module (PPP4) to enter the power saving mode 4;

Step S240: The power saving mode setting module (PPP4) determines to enter the power saving mode 4 according to the state foot of the DBB (PPP1), and sets the control pins GPI03, GPIO 2, and GPIO 1 of the DBB (PPP1) to 011, then the PM (PPP5) The power control leads PPWR3, PWR2, and PWR1 to Oil; Step S250: PM (PPP5) detects that the power control pins PWR3, PWR2, and PWR 1 are Oil, and the hardware automatically enables the power saving mode 4 to take effect, PM (PPP5) The power supply LDO of the camera 2, the power supply LDO 4 of the CODEC and the DCDC of the backlight are turned off, and the power supply BUCK2 of the MEMERY enters the PFM mode;

Step S260: When the interrupt comes, the mobile terminal exits the power saving mode 4, and the hardware automatically causes each LDO and DCDC of the PM (PPP5) to be in the normal working mode;

After knowing the technical solution provided by the present invention, it is not difficult to know by the test that the solution can be used to reduce the power consumption of the system. In the call state, the DCDC of the backlight can be turned off to reduce the work of about 25 ma. Consumption; BUCK2 enters PFM mode in WFI sleep mode, which can reduce power consumption by about 3ma compared with normal working mode.

In summary, the present invention can quickly enter the corresponding low power mode according to the working state signal detected by the state detecting module of the power management module, thereby increasing the sleep time of the system, thereby reducing the power consumption of the mobile terminal and extending the power consumption. Standby time of the mobile terminal.

In addition, the embodiment of the present invention further provides a mobile terminal, including the foregoing apparatus for reducing power consumption of a mobile terminal, where the apparatus includes:

a power management unit, configured to detect a working state signal of the mobile terminal; select a corresponding power saving mode according to the working state signal, and set a DBB control pin according to the power saving mode, Controlling the power control pin of the PM causes the PM to enter a corresponding power saving mode;

The mobile terminal can be a mobile phone, a smart phone, a personal digital assistant (PDA), a portable computer, and the like.

For a detailed description of the apparatus for reducing the power consumption of the mobile terminal, reference may be made to the above, and here, the description is repeated.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the invention and the drawings are directly or indirectly applied to other related The technical field is equally included in the scope of patent protection of the present invention.

Claims

claims

1. A method for reducing power consumption of a mobile terminal, characterized in that the method includes: detecting a working status signal of the mobile terminal;

Select the corresponding power-saving mode according to the working status signal, set the control pin of the digital baseband chip DBB according to the power-saving mode, and control the power control pin of the power drive module PM to make the PM enter the corresponding power-saving mode.

2. The method for reducing power consumption of a mobile terminal as claimed in claim 1, wherein before detecting the working status signal of the mobile terminal, the method further includes:

After the mobile terminal is powered on, the corresponding relationship between the corresponding power saving modes adopted by the PM in different working states of the mobile terminal is configured.

3. The method of reducing power consumption of a mobile terminal according to claim 1, wherein the detecting the working status signal of the mobile terminal includes:

After the mobile terminal works normally and enters the corresponding working mode, set the status pin of DBB; detect the status pin of DBB to obtain the working status signal of the mobile terminal.

4. The method of reducing mobile terminal power consumption according to claim 1, characterized in that the method further includes:

PM feeds back the current power saving mode information it adopts to DBB.

5. The method of reducing mobile terminal power consumption according to claim 4, characterized in that the method further includes:

When an interrupt signal is detected, the mobile terminal exits the power saving mode.

6. A device for reducing power consumption of a mobile terminal, which is characterized by including:

The power management unit is used to detect the working status signal of the mobile terminal; select the corresponding power saving mode according to the working status signal, and set the control pin of the digital baseband chip DBB according to the power saving mode to control the power driving module PM Power control pins to enable the PM to enter the corresponding power saving mode; and PM is used to enter the corresponding power saving mode under the control of the power control pin of the PM by the power management unit.

7. The device for reducing power consumption of a mobile terminal according to claim 6, wherein the power management unit includes:

The status signal detection module is used to detect the working status signal of the mobile terminal, and send the detected working status signal of the mobile terminal to the power saving mode setting module;

The power saving mode setting module is used to select the corresponding power saving mode according to the working status signal after receiving the working status signal of the mobile terminal sent by the status signal detection module, and set the control pin of the DBB according to the power saving mode. , control the power control pin of the PM to make the PM enter the corresponding power saving mode.

8. The device for reducing power consumption of a mobile terminal according to claim 6 or 7, characterized in that the power saving mode setting module is also used to configure the mobile terminal to PM in different working states after the mobile terminal is powered on. The corresponding relationship between the corresponding power saving modes adopted.

9. The device for reducing power consumption of a mobile terminal according to claim 8, wherein the status signal detection module is specifically used to: set the status pin of the DBB after the mobile terminal operates normally and enters the corresponding working mode. ; And detect the status pin of DBB to obtain the working status signal of the mobile terminal.

10. The device for reducing power consumption of a mobile terminal according to claim 6, wherein the PM is also used to feed back the current power saving mode information adopted by the PM to the DBB.

11. A mobile terminal, characterized in that the mobile terminal includes the device for reducing power consumption of the mobile terminal according to any one of claims 6-10.