TWI455527B - System and method for power source management - Google Patents

Description

Power management system and method

The present invention relates to a power management technology, and more particularly to a power management system and method.

Many electronic devices have Wi-Fi capabilities, such as mobile phones, PDAs, notebooks, game consoles, and some home appliances are equipped with Wi-Fi modules. However, in these devices, especially in battery-powered mobile electronic devices, the length of battery life during the use of Wi-Fi for data transfer is a key performance indicator. The Wi-Fi protocol currently developed by the Wi-Fi Alliance provides a power-saving solution in which the access point inserts a signaling into each packet to inform the user in a communication between the user terminal and the access point. Whether the data transmission of the terminal ends or not, and if the user terminal receives the signaling that informs the end of the communication, the operation mode of the Wi-Fi module is switched to the power saving mode. Thereby achieving the effect of saving electricity. However, in a communication process, a plurality of packets are usually required to be transmitted between the user terminal and the access point, and sometimes the Wi-Fi module cannot be switched to the power saving mode in time due to network interruption or long delay, which wastes the battery. energy of.

In view of the above, it is necessary to provide a power management system that operates in an electronic device equipped with a Wi-Fi communication module. The system includes: a packet detection module, configured to detect whether a packet arrives after a communication connection of the Wi-Fi communication module is established And for detecting whether the communication ends; the packet reading module is configured to read the packet received by the Wi-Fi communication module in the communication; the packet analysis module is configured to perform signaling according to the packet The type of the packet is analyzed and processed according to the type of the packet: if the type of the packet is a voice packet, the voice communication power control module is started to perform power saving control on the voice communication; if the type of the packet is an image packet, the image communication power is started. The control module performs power saving control on the image communication; if the type of the packet is other data type, power management is not performed.

In view of the above, it is also necessary to provide a power management method for use in an electronic device equipped with a Wi-Fi communication module. The method includes: (a) reading a first packet of the communication after a communication establishment of the Wi-Fi communication module; (b) analyzing the type of the packet according to a packet type signaling carried in the packet, If it is a voice packet, perform step (c). If it is an image packet, perform step (d), if it is another type of packet, end; (c) power saving control of the voice communication; (d) power saving the video communication control.

According to the power management system and method provided by the present invention, when the electronic device communicates through the Wi-Fi communication module, if the packet transmission failure or the packet transmission delay occurs, the Wi-Fi communication module is switched to the power saving mode in time. under. Thereby extending the battery life of the electronic device.

1‧‧‧Electronic device

100‧‧‧Power Management System

10‧‧‧Packet Detection Module

20‧‧‧Packet reading module

30‧‧‧Packet Analysis Module

40‧‧‧Voice Communication Power Control Module

50‧‧‧Image Communication Power Control Module

60‧‧‧Wi-Fi communication module

S202‧‧‧Read the first packet

S204‧‧‧Determine the type of the packet

S206‧‧‧Voice communication power saving control

S210‧‧‧Image communication power saving control

S302‧‧‧Detected the next voice packet in T1 time?

S304‧‧‧ Issue normal mode command to Wi-Fi communication module

S306‧‧‧ Is this voice packet the last packet?

S308‧‧‧Send power saving mode command to Wi-Fi communication module

S402‧‧‧Detected the next image packet in T2?

S404‧‧‧Send normal mode command to Wi-Fi communication module

S406‧‧‧ Is this image packet the last packet?

S408‧‧‧Send power saving mode command to Wi-Fi communication module

1 is a schematic diagram of an operating environment of a power management system of the present invention.

2 is a flow chart of a power management method of the present invention.

FIG. 3 is a detailed flowchart of step S206.

FIG. 4 is a detailed flowchart of step S210.

FIG. 5 is a timing diagram of two modes of operation of the Wi-Fi communication module when communicating.

FIG. 1 is a schematic diagram of an operating environment of a power management system according to the present invention. The power management system 100 (hereinafter referred to as the system 100) operates in the electronic device 1. The electronic device 1 is equipped with a Wi-Fi communication module 60. The system 100 includes a packet detection module 10, a packet reading module 20, a packet analysis module 30, a voice communication power control module 40, and a video communication power control module 50.

The packet detection module 10 is configured to detect whether a packet arrives after the communication is established by the Wi-Fi communication module 60. The specific method is: the packet detection module 10 queries whether the Wi-Fi communication module 60 is Receiving the Beacon signal sent by the access point, if the Beacon signal is received, it indicates that the access point and the Wi-Fi communication module 60 start packet transmission. The packet detection module 10 is further configured to detect whether the communication is ended. In the Wi-Fi protocol, in one communication, each packet sent by the access point to the Wi-Fi communication module 60 carries a signaling for declaring whether the packet is the last packet to notify the Wi. If the communication is completed, the packet detection module 10 can determine whether the communication is ended by querying the signaling carried by the packet received by the Wi-Fi communication module 60.

The packet reading module 20 is configured to read a packet received by the Wi-Fi communication module 60 in the communication.

The packet analysis module 30 is configured to analyze the type of the packet, and the specific analysis basis is: in the Wi-Fi protocol, in one packet, the access point sends each packet to the Wi-Fi communication module 60 in one communication. A signaling is used to declare the type of the packet, and the packet analysis module 30 can determine the type of the packet by querying the signaling of the type of the declared packet carried by the packet received by the Wi-Fi communication module 60. Packet class Types include voice packets, video packets, and other types of packets.

The voice communication power control module 40 is configured to perform power management on the Wi-Fi communication module 60 during voice communication according to the detection result of the packet detection module 10. Specifically, if the next voice packet arrives in the T1 time, the normal mode command is sent to the Wi-Fi communication module 60, so that the Wi-Fi communication module 60 works in the normal mode; otherwise, the Wi-Fi communication module 60 is operated. The Fi communication module 60 issues a power save mode command to cause the Wi-Fi communication module 60 to operate in the power save mode. Where T1=(1+3/4)T0, the value of T0 ranges from 1.76 milliseconds to 10.3 milliseconds. In the Wi-Fi protocol, the Wi-Fi communication module 60 includes two modes of operation, one is a normal mode and the other is a power saving mode. The normal mode is defined as the Wi-Fi communication module 60 is always in the awake state, that is, once the access point sends the Beacon signal to the Wi-Fi communication module 60, the response can be immediately responded, so the Wi-Fi communication module 60 works normally. The mode consumes more power. The power-saving mode is defined as the Wi-Fi communication module 60 is always in a periodic wake-up state, that is, the Wi-Fi communication module 60 periodically monitors whether the Beacon signal is received, so the Wi-Fi communication module 60 operates in the power saving mode. More power saving.

The image communication power control module 50 is configured to perform power management on the Wi-Fi communication module 60 that performs image communication according to the detection result of the packet detection module 10. Specifically, the method includes: if a next image packet arrives in the T2 time, sending a normal mode command to the Wi-Fi communication module 60 to enable the Wi-Fi communication module 60 to operate in a normal mode; otherwise, to the Wi The -Fi communication module 60 issues a power save mode command to cause the Wi-Fi communication module 60 to operate in the power save mode. Where T2=(1+1/4)T0, the value of T0 ranges from 1.76 milliseconds to 10.3 milliseconds.

As shown in FIG. 2, it is a flowchart of the power management method of the present invention.

Step S202, after one communication of the Wi-Fi communication module 60 is established, the packet reading module 20 reads the first packet of the communication.

Step S204, the packet analysis module 20 analyzes the signaling of the declared packet type carried in the packet to determine the packet type. If the voice packet is a voice packet, step S206 is performed; if the image packet is a video packet, step S210 is performed; if other types of packets are terminated.

Step S206, the voice communication power supply control module 40 is activated to perform power saving control on the current communication.

Step S210, the image communication power supply control module 40 is activated to perform power saving control on the current communication.

As shown in FIG. 3, it is a refinement flowchart of step S206.

Step S302, in step T1, when the packet detecting module 10 detects that the next voice packet arrives, step S304 is performed; otherwise, step S308 is performed. Where T1=(1+3/4)T0, the value of T0 ranges from 1.76 milliseconds to 10.3 milliseconds.

In step S304, the voice communication power control module 40 issues a normal mode command to the Wi-Fi communication module 60, so that the Wi-Fi communication module 60 operates in the normal mode. In the Wi-Fi protocol, the normal mode of the Wi-Fi communication module 60 is defined as the Wi-Fi communication module 60 is always in the awake state, that is, once the access point sends the Beacon signal to the Wi-Fi communication module 60, Immediate response, so the Wi-Fi communication module 60 will consume more power when operating in the normal mode.

Step S306, the packet detection module 10 determines whether the voice packet carries the signaling that declares the voice packet as the last packet in the communication, and carries the voice packet in the voice packet. End with this type of signaling, otherwise return to step S302.

In step S308, the voice communication power control module 40 issues a power saving mode command to the Wi-Fi communication module 60, so that the Wi-Fi communication module 60 operates in the power saving mode. In the Wi-Fi protocol, the power saving mode of the Wi-Fi communication module 60 is defined as the Wi-Fi communication module 60 is always in a periodic awake state, that is, the Wi-Fi communication module 60 periodically monitors whether the Beacon signal is received. Therefore, the Wi-Fi communication module 60 is relatively power-saving when operating in the power-saving mode.

As shown in FIG. 4, it is a refinement flowchart of step S210.

In step S402, when the packet detecting module 10 detects that the next image packet arrives, the process proceeds to step S404, otherwise step S408 is performed. Where T2=(1+1/4)T0, the value of T0 ranges from 1.76 milliseconds to 10.3 milliseconds.

In step S404, the video communication power control module 50 issues a normal mode command to the Wi-Fi communication module 60, so that the Wi-Fi communication module 60 operates in the normal mode.

Step S406, the packet detecting module 10 determines whether the image packet carries the signaling that the image packet is the last packet in the communication, and ends when the image packet carries the signaling, otherwise returns to step S402. .

In step S408, the video communication power control module 50 issues a power saving mode command to the Wi-Fi communication module 60, so that the Wi-Fi communication module 60 operates in the power saving mode.

As shown in FIG. 5, it is a timing chart of two operating modes when the Wi-Fi communication module 60 performs communication.

In FIG. 5, it is assumed that the Wi-Fi communication module 60 is performing a voice communication at this time. To further simplify the description, it is assumed that the voice communication has only three packets, which are respectively The first, second and third packages. The transmission interval between the first packet and the second packet is less than T1, and the third packet is delayed for some reason of the network, and the delay duration exceeds T1, then the Wi-Fi will be after the T1 time after the arrival of the second packet. The communication module 60 switches to the power saving mode, and then switches the Wi-Fi communication module 60 back to the normal mode after detecting the arrival of the third packet.

It should be noted that the above embodiments are only for explaining the technical solutions of the present invention and are not intended to be limiting, and the present invention will be described in detail with reference to the preferred embodiments. Modifications or equivalents are made without departing from the spirit and scope of the invention.

1‧‧‧Electronic device

100‧‧‧Power Management System

10‧‧‧Packet Detection Module

20‧‧‧Packet reading module

30‧‧‧Packet Analysis Module

40‧‧‧Voice Communication Power Control Module

50‧‧‧Image Communication Power Control Module

60‧‧‧Wi-Fi communication module

Claims (4)

A power management system running in an electronic device equipped with a Wi-Fi communication module, the system comprising: a packet detection module, configured to detect whether a packet is present after a communication connection of the Wi-Fi communication module is established Arriving and detecting whether the communication ends; the packet reading module is configured to read the packet received by the Wi-Fi communication module in the communication; the packet analysis module is configured to carry the message according to the packet The type of the packet is analyzed and processed according to the type of the packet: if the type of the packet is a voice packet, the voice communication power control module is started to perform power saving control on the voice communication, and the voice communication power control module passes the following Step: performing power saving control on the voice communication: if the packet detecting module detects that the next voice packet arrives in the T1 time, the normal mode command is sent to the Wi-Fi communication module, otherwise, the Wi-Fi communication mode is sent to the Wi-Fi communication module. The group issues a power saving mode command, wherein T1=(1+3/4)T0, and the value range of T0 is 1.76 milliseconds to 10.3 milliseconds; if the type of the packet is an image packet, the image communication power control module is activated to the secondary image. Power-saving control is performed like communication; power management is not performed if the type of packet is other data type. For example, in the power management system of claim 1, the image communication power control module performs power saving control on the secondary image communication by the following steps: if the packet detection module detects the next time in the T2 time When an image packet arrives, a normal mode command is issued to the Wi-Fi communication module; otherwise, a power saving mode command is issued to the Wi-Fi communication module, where T2=(1+1/4)T0, and T0 ranges from 1.76. Milliseconds to 10.3 milliseconds. A power management method for an electronic device equipped with a Wi-Fi communication module, the method comprising: (a) reading a first packet of the communication after a communication establishment of the Wi-Fi communication module (b) analyzing the type of the packet according to the packet type carried in the packet, and performing step (c) if it is a voice packet, and performing step (d) if it is an image packet, and ending if it is another type of packet; The power saving control of the voice communication includes: (c1) when it is detected that the next voice packet arrives in the T1 time, the step (c2) is performed, otherwise the step (c4) is performed, where T1=(1+ 3/4) T0, T0 ranges from 1.76 milliseconds to 10.3 milliseconds; (c2) sends a normal mode command to the Wi-Fi communication module; (c3) determines whether the voice packet is based on the signaling carried in the packet The last packet of this communication ends if it is, otherwise it returns to step (c1); (c4) sends a power saving mode command to the Wi-Fi communication module; (d) performs power saving control for the current image communication. For example, in the power management method described in claim 3, the step (d) includes: (d1) when it is detected that the next image packet arrives in the T2 time, the step (d2) is performed, otherwise the step is performed ( D4), where T2=(1+1/4)T0, T0 ranges from 1.76 milliseconds to 10.3 milliseconds; (d2) sends a normal mode command to the Wi-Fi communication module; (d3) carries according to the packet The signaling determines whether the next image packet is the last packet of the communication, and if so, ends, otherwise returns to step (d1); (d4) issues a power saving mode command to the Wi-Fi communication module.