CN1937510A - Power source management method for Wi Fi device - Google Patents
Power source management method for Wi Fi device Download PDFInfo
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- CN1937510A CN1937510A CN 200510029823 CN200510029823A CN1937510A CN 1937510 A CN1937510 A CN 1937510A CN 200510029823 CN200510029823 CN 200510029823 CN 200510029823 A CN200510029823 A CN 200510029823A CN 1937510 A CN1937510 A CN 1937510A
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Abstract
This invention include steps: initializes the system of Hi-Fi equip, sets the System Interception Beacon Interval (SIBI) to 1st default value, then intercepts the beacon and judges that if it is a real time video or audio. If it is not, it will re-intercept after the time of the 1st default. It checks that the reception of the real time video or audio finish or not according to the content of beacon. If it does, then resets the SIBI to the 1st default value. If it does not, then sets the SIBI to the 2nd default value, which is less than the 1st value and continues to intercept.
Description
Technical field
The present invention is relevant for a kind of Wi-Fi equipment, particularly about a kind of method for managing power supply of Wi-Fi equipment.
Background technology
Wi-Fi is the abbreviation of Wireless Fidelity, can be called " wireless high fax " again, is the interconnectivity standard by the wlan device of Wi-Fi Alliance formulation.The radio wideband server, it is a technology that is called as Wi-Fi or 802.11b, Wi-Fi network maximum speed reaches per second 11 megabit Mb, be mainly used in products such as mobile phone, personal digital assistant and mobile computer, the service of high speed Internet access is provided in Wi-Fi base station or the hundreds of feet of reflector circumference with Wi-Fi communication apparatus.Therefore the user can be at home, ground such as Airport lounges or library utilize the Wi-Fi communication apparatus, and directly through " focus " hot spot or access point (Aceess point in the Wi-Fi term, be called for short AP) easily logging onto the Internet, in addition, company's row number also can see through the setting of Wi-Fi network, to save huge cost and the time at whole office's wiring.
See also shown in Figure 1, it is the communication architecture schematic diagram of known Wi-Fi equipment, for WLAN (WLAN), it is mainly formed and comprises a server 130, at least one access point 120 (AP) and a plurality of client 110, wherein server 130 can see through router one 40 (Router) and be connected to the Internet 150,120 of access point are to be connected with server 130, its main function is that wireless network is bridged to Ethernet, resource in the network is integrated to be shared, and client 110 is the Wi-Fi communication apparatus, and it mainly is to utilize the Wi-Fi network card to see through access point 120 to be connected with the Internet.
The characteristics of Wi-Fi communication apparatus be light, be easy to carry about with one and can surf the Net everywhere, therefore, its employed power supply is based on battery, but because the electric weight of battery is limited, after using a period of time, must charge, cause user's puzzlement for fear of battery because often charge, the Wi-Fi communication apparatus all has the function of power management at present, to prolong the service time of battery.The method of its power management mainly is that system will not be set in sleep pattern when Wi-Fi equipment does not use; reduce to the consumption of the power-off battery electric quantity of radio-frequency front-end minimum; but can't receive data in real time because entering sleep pattern for fear of Wi-Fi equipment; usually can after sleep a period of time, wake up automatically and open the power supply of radio-frequency front-end, and whether have data to need reception to watch in the beacon that access point sent with access point is online.
See also shown in Figure 2, it is the flow chart of known Wi-Fi device power supply (DPS) management method, its step comprises: at first with the system initialization (200) of Wi-Fi equipment, the internal system listen for beacons is set at implied value T (210) blanking time, the radio-frequency front-end power supply of opening Wi-Fi equipment removes to intercept and receives beacon (220), receive and close radio-frequency front-end power supply (230) after beacon is finished, with a summary counter cumulative time, its aggregate-value is made as t (240), judge whether summary counter aggregate-value t equals the listen for beacons implied value T of blanking time (250), if continue the cumulative time, then get back to the radio-frequency front-end power supply of step (220) unlatching Wi-Fi equipment if yes and intercept and receive beacon otherwise get back to step (240).
Yet known technology has following shortcoming
A is because known technology system is made as fixed value with the time T of listen for beacons, and excessive if this value is set, the delay that causes data to receive easily increases, real-time audio-video data especially, and the delay reception of image or sound can cause user's puzzlement.
B is if known technology is set the time T of listen for beacons when excessive, and data can take the space in access point inside information working area, if when having a large amount of Wi-Fi equipment to need access point to transmit data, the data working area of access point just may be not enough.
When c was too small as if the time T of known technology setting listen for beacons, even without the data that needs receive, Wi-Fi equipment also can frequently be waken up, and causes unnecessary power wastage.
In view of this, the present invention proposes a kind of method for managing power supply, and expectation can go to set listen for beacons this time value at interval dynamically, to reach the purpose of saving electric power, just can prolong the service time of battery.
Summary of the invention
Main purpose of the present invention is to provide a kind of method of dynamic power management, to prolong the service time of Wi-Fi device interior battery.
The invention provides a kind of method of dynamic power management, dynamic power management (Dynamic Powermanagement system) is a kind of method for designing that reduces power consumption of finishing system task with the low power consuming state of minimum assembly or the minimum workload of assembly, Wi-Fi equipment is if wonder that the data that need not receive is arranged, then must open radio-frequency front-end earlier and remove to intercept the beacon Beacon that access point AP is sent, when if Wi-Fi opening of device radio-frequency front-end goes the number of times of listen for beacons to reduce, equipment can be saved electric power effectively when just system was made as default value with the time T 2 of listen for beacons.
The present invention promptly is to go setting listen for beacons at interval dynamically, when system does not need rapid listen for beacons and receives the real-time audio-video data in a large number, system can be made as default value with listen for beacons interlude T1, and when system needs rapid listen for beacons and receives the real-time audio-video data in a large number, system can be made as default value with listen for beacons interlude T2, because second implied value T 2 is less than first implied value T 1, can reduce system opens radio-frequency front-end when not needing to receive the real-time audio-video data number of times by this, and when needs receive real-time in a large number real-time audio-video data, height-adjusting system is opened the number of times of radio-frequency front-end, allows real-time being received by Wi-Fi equipment from access point of real-time audio-video data.Reasonably control the frequency that hand held Wi-Fi equipment wakes up and to reduce the number of times that it opens radio-frequency front-end, reach the purpose of saving electric power.
The present invention sees through the dynamic listen for beacons time interval Listen Interval of setting, reduces the number of times that Wi-Fi equipment is opened radio-frequency front-end, reaches to save the electric power expenditure, prolongs the battery purpose of service time.
The Wi-Fi device systems can be set the default value at a listen for beacons interval at the beginning after initialization, make Wi-Fi equipment intercept beacon one time through the long period, if the arrival of no new data, that is just according to the listen for beacons of regularly waking up of frequency in the past.If there is new data to arrive, just be judged as the data of which kind of type by the software upper strata, if use in real time, as voice or video signal etc., that is just rewritten listen for beacons and is spaced apart a smaller value, if the real-time audio-video data postpones to arrive, Wi-Fi equipment also is very soon can be from listen for beacons is made as implied value T 1 at interval, changing the short period into intercepts once listen for beacons implied value T 2 at interval, after real-time application finishes, system can change listen for beacons into implied value T 1 at interval, use data if just receive non real-time, Wi-Fi equipment then can not change listen for beacons at interval, still listen for beacons is made as implied value T 1 at interval, more than is the key concept of Wi-Fi equipment dynamic power management system of the present invention.
The invention has the advantages that by going dynamically and set the listen for beacons length of blanking time, reasonably control Wi-Fi equipment and wake up and open the number of times of radio-frequency front-end power supply, can save the electric power expenditure, prolong the service time of battery.
For understanding the present invention's purpose, feature and effect really, have and further understand and approval, conjunction with figs. describes in detail as the back now:
Description of drawings
Fig. 1 is the schematic diagram of a typical Wi-Fi device talk.
Fig. 2 is the flow chart of known power source management.
Fig. 3 is the flow chart of dynamic power management of the present invention.
Embodiment
The following stated is the preferred embodiment of Wi-Fi equipment dynamic power supply management method of the present invention.
See also shown in Figure 3, it is for the flow chart of Wi-Fi equipment dynamic power supply management method of the present invention, its step comprises: at first with the system initialization (300) of Wi-Fi equipment, the internal system listen for beacons is set in first implied value T 1 (310) blanking time, the radio-frequency front-end power supply of opening Wi-Fi equipment removes to intercept and receives beacon (320), receive and close radio-frequency front-end power supply (330) after beacon is finished, judge whether this data is real-time audio-video (340), if the non real-time audiovisual materials then utilize a summary counter cumulative time, its aggregate-value is made as tb (390), judge whether summary counter aggregate-value tb equals listen for beacons first implied value T 1 (395) of blanking time, then get back to the radio-frequency front-end power supply of step (320) unlatching Wi-Fi equipment if yes and intercept and receive beacon, if otherwise get back to step (390) and continue the cumulative time.
When being real-time audio-video as if the data of being judged in step (340) again, then the internal system listen for beacons is set at second implied value T 2 blanking time, wherein this second implied value T 2 is less than first implied value T 1 (350), utilize the summary counter cumulative time, its aggregate-value is made as ta (360), judge whether summary counter aggregate-value ta equals listen for beacons implied value T 2 (370) blanking time second, if continue the cumulative time otherwise get back to step (360), then judge according to beacon content whether the reception of this real-time audio-video data finishes (380) if yes, then get back to step (310) if yes the internal system listen for beacons is set at first implied value T 1 (310) blanking time, if otherwise get back to the radio-frequency front-end power supply that step (320) opens Wi-Fi equipment and remove to intercept and receive beacon.
So the technology of the present invention has following advantage
A the technology of the present invention is that the time T with listen for beacons is set at change value T1 and T2, wherein this second implied value T 2 is less than first implied value T 1, when system does not need rapid listen for beacons and receives the real-time audio-video data in a large number, system can be made as default value with the time T 1 of listen for beacons, and when system needs rapid listen for beacons and receives the real-time audio-video data in a large number, system can be made as default value with the time T 2 of listen for beacons, can allow real-time being received of real-time audio-video data by this, image or sound just can not cause user's puzzlement because of the reception that postpones.
B the technology of the present invention is that the time T with listen for beacons is set at change value T1 and T2, wherein this second implied value T 2 is less than first implied value T 1, when the real-time audio-video transfer of data, system can be made as default value with the time T 2 of listen for beacons, because the shorter data of time of listen for beacons is more compared to the number of times that is set at 1 reception of first implied value T same period, the space in access point inside information working area is taken by data, if when having a large amount of Wi-Fi equipment to need access point to transmit data, the data working area of access point just can be enough.
C the technology of the present invention is set at change value T1 and T2 by the time T with listen for beacons, when needs receive the real-time audio-video data, system can be made as default value with the time T 2 of listen for beacons, so that being shortened at interval, listen for beacons can receive data in real time, when the real-time audio-video data receives end, system can be made as default value with the time T 1 of listen for beacons, open the number of times that radio-frequency front-end goes listen for beacons so that reduce Wi-Fi equipment, and reduce unnecessary power wastage, reasonably control hand held Wi-Fi equipment and open the frequency that radio-frequency front-end goes listen for beacons, can reduce unnecessary power wastage, reach the purpose of saving electric power, to prolong the service time of Wi-Fi device interior battery.
The above is to utilize a preferred embodiment to describe the present invention in detail, but not limit the scope of the invention, and know present technique field person and can understand, suitably do slightly change and adjustment, will not lose main idea of the present invention place, also not break away from the spirit and scope of the present invention.
Claims (9)
1. the method for a Wi-Fi equipment dynamic power management comprises the following steps at least
A. with the system initialization of Wi-Fi equipment;
B. system's listen for beacons is set at interval first implied value T 1;
C. listen for beacons;
D. judge by the software upper strata whether data is real-time audio-video in the beacon, if system is not carrying out listen for beacons through getting back to step c after the time of this first default value; Then system's listen for beacons is set at interval second implied value T 2 if yes, wherein this second default value is less than this first default value;
E. judge that according to beacon content whether the reception of real-time audio-video data finishes, and then gets back to step b if yes; If otherwise step c is getting back to through after the time of this second default value in system.
2. the method for claim 1 is characterized in that, this Wi-Fi equipment externally bridges to an access point, and a data working area is arranged in this access point, and in step c, this Wi-Fi equipment receives the beacon by this access point sent from this data working area.
3. the method for claim 1 is characterized in that, steps d utilizes a summary counter to begin the cumulative time after listen for beacons is finished, and, gets back to step c and carry out listen for beacons when identical with this first default value in this cumulative time.
4. method as claimed in claim 2 is characterized in that, steps d is set at second default value at interval with this listen for beacons after receiving real-time audio-video data beacon, to receive the real-time audio-video data that this access point is transmitted.
5. the method for claim 1 is characterized in that, this real-time audio-video data is the archives material of image or audio format.
6. the method for claim 1 is characterized in that, this Wi-Fi equipment has a radio-frequency front-end, must open earlier the power supply of this radio-frequency front-end when listen for beacons, and after intercepting end with the power-off of this radio-frequency front-end.
7. the method for claim 1 is characterized in that, step e receives when not finishing as yet in the real-time audio-video data, utilizes a summary counter cumulative time, and, gets back to step c and carry out listen for beacons when identical with this second default value in this cumulative time.
8. method as claimed in claim 7 is characterized in that, step e is set at first default value at interval with this listen for beacons after the real-time audio-video data finishes receiving, the number of times of opening because of listen for beacons with the power supply that reduces this radio-frequency front-end.
9. the method for claim 1 is characterized in that, this Wi-Fi equipment is radio computer network product, personal digital assistant device or mobile phone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510029823 CN1937510A (en) | 2005-09-21 | 2005-09-21 | Power source management method for Wi Fi device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510029823 CN1937510A (en) | 2005-09-21 | 2005-09-21 | Power source management method for Wi Fi device |
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| CN1937510A true CN1937510A (en) | 2007-03-28 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102118045A (en) * | 2009-12-30 | 2011-07-06 | 深圳富泰宏精密工业有限公司 | Power supply management system and method |
| CN102612118A (en) * | 2011-01-25 | 2012-07-25 | 原相科技股份有限公司 | Method for adjusting off-line waiting time and communication device |
| CN107889189A (en) * | 2016-09-30 | 2018-04-06 | 华为技术有限公司 | Beacon frame information method and apparatus |
| CN109565641A (en) * | 2016-08-15 | 2019-04-02 | 华为技术有限公司 | A kind of system and method for beacon interval adaptation |
-
2005
- 2005-09-21 CN CN 200510029823 patent/CN1937510A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102118045A (en) * | 2009-12-30 | 2011-07-06 | 深圳富泰宏精密工业有限公司 | Power supply management system and method |
| CN102612118A (en) * | 2011-01-25 | 2012-07-25 | 原相科技股份有限公司 | Method for adjusting off-line waiting time and communication device |
| CN102612118B (en) * | 2011-01-25 | 2015-02-04 | 原相科技股份有限公司 | Method for adjusting off-line waiting time and communication device |
| CN109565641A (en) * | 2016-08-15 | 2019-04-02 | 华为技术有限公司 | A kind of system and method for beacon interval adaptation |
| US10764812B2 (en) | 2016-08-15 | 2020-09-01 | Futurewei Technologies, Inc. | System and method for beacon interval adaptation |
| CN107889189A (en) * | 2016-09-30 | 2018-04-06 | 华为技术有限公司 | Beacon frame information method and apparatus |
| CN107889189B (en) * | 2016-09-30 | 2020-04-28 | 华为技术有限公司 | Beacon frame sending method and device |
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Open date: 20070328 |