CN101114858A - Electricity-saving system and method of mobile station - Google Patents
Electricity-saving system and method of mobile station Download PDFInfo
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- CN101114858A CN101114858A CNA2006102007528A CN200610200752A CN101114858A CN 101114858 A CN101114858 A CN 101114858A CN A2006102007528 A CNA2006102007528 A CN A2006102007528A CN 200610200752 A CN200610200752 A CN 200610200752A CN 101114858 A CN101114858 A CN 101114858A
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- mobile radio
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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
A mobile station power saving method comprises that a mobile station is switched from a low-power mode to an active mode and sends inquiry frame to the access point; the access point sends inquiry confirmation frame to the mobile station after receiving the inquiry frame and starts to timing; the access point judges whether any data needs to be sent to the mobile station; if any, the access point sends the data to the mobile station in the scheduled time; the mobile station enters into low-power mode after receiving all the data sent by the access point. The invention also discloses a mobile station power saving system by using the mobile station power saving method. The mobile station power saving system and the power saving method in the invention reduces the time of the mobile station entering the low-power mode and thus reducing the mobile station energy consumption, as each time the mobile station is connected with the access point, the access point sends data frame or frame without data indicated to the mobile station in the shortest time as is prescribed.
Description
Technical field
The present invention relates to WLAN, relate in particular to mobile radio station electricity-saving system and method in the WLAN.
Background technology
In WLAN, power consumption is one of key performance of mobile radio station.So IEEE 802.11 protocol definitions have battery saving mode (Power Saving Mode, function PSM) of supporting mobile radio station.
The mobile radio station that is in battery saving mode can regularly change active mode (Active State) over to and send the service quality poll to access point (whether Quality of Service Poll, QoS-Poll) frame have the data beard and hair to give mobile radio station with definite access point.Access point sends in poll acknowledgement frame and the query caching whether be cached with the data that sends to mobile radio station to mobile radio station after receiving the service quality poll frame that mobile radio station sends.If be cached with the data that send to mobile radio station in the buffer memory of access point, access point need wait for that one section random length sends Frame to mobile radio station after the time; If do not send to the data of mobile radio station in the buffer memory of access point, access point need wait for that equally one section random length sends the frame of expression free of data to mobile radio station after the time.In IEEE 802.11 agreements, this section random length time is not defined, generally this section random length stand-by period is greater than centralized coordination function frame period (Point Coordination Function Inter-Frame Space, PIFS), make mobile radio station fail in the shortest time, to enter battery saving mode and increase power consumption.
Summary of the invention
For solving the deficiency that above-mentioned prior art exists, need provide a kind of mobile radio station electricity-saving system, to reduce the power consumption of mobile radio station.
In addition, also need to provide a kind of mobile radio station electricity saving method, to reduce the power consumption of mobile radio station.
A kind of mobile radio station electricity-saving system is used for comprising the WLAN system of access point and a plurality of mobile radio stations, the power consumption that is used to save mobile radio station.The mobile radio station electricity-saving system comprises enquiry module, judge module and timing module.Enquiry module is arranged in the mobile radio station, is used for sending the inquiry frame to access point after mobile radio station changes active mode over to.Judge module is arranged in the access point, is used for receiving that at access point inquiry has judged whether that the data beard and hair gives mobile radio station behind the frame.Timing module is arranged in the access point, is used for picking up counting after mobile radio station sends the acknowledgment of your inquiry frame at access point, so that access point when timing module timing overtime, sends data to mobile radio station.
A kind of mobile radio station electricity saving method is applied to comprise that in the WLAN system of access point and a plurality of mobile radio stations, described mobile radio station electricity saving method comprises: mobile radio station changes active mode over to by battery saving mode, and sends the inquiry frame to access point; Access point sends the acknowledgment of your inquiry frame to mobile radio station after receiving the inquiry frame, and picks up counting; Access point has judged whether that the data beard and hair gives mobile radio station; Beard and hair is given mobile radio station if access point has data, then sends the data to mobile radio station at the appointed time by access point; Mobile radio station enters battery saving mode after receiving the data that access point sends.
Above-mentioned mobile radio station electricity-saving system and method, at every turn after mobile radio station and access point foundation binding, by regulation access point frame to mobile radio station transmission data or expression free of data in the shortest time, enter the time of battery saving mode with the shortening mobile radio station, thereby reduce the power consumption of mobile radio station.
Description of drawings
Fig. 1 is the applied environment schematic diagram of mobile radio station electricity-saving system in the embodiment of the present invention.
Fig. 2 is the module map of mobile radio station electricity-saving system in the embodiment of the present invention.
Fig. 3 is the field schematic diagram of the empty frame of service quality that access point sends to mobile radio station in the embodiment of the present invention.
Fig. 4 is the flow chart of mobile radio station electricity saving method in the embodiment of the present invention.
Embodiment
See also Fig. 1, be depicted as the applied environment schematic diagram of mobile radio station electricity-saving system 10 in the embodiment of the present invention.In the present embodiment, mobile radio station electricity-saving system 10 is applied in the WLAN system.WLAN system comprises access point 100 and a plurality of mobile radio station 200, access point 100 establishes a communications link by 802.11 agreements and a plurality of mobile radio station 200, mobile radio station 200 can be mobile computer, personal digital assistant (Personal Digital Assistant, PDA), electronic apparatus such as mobile phone.
See also Fig. 2, be depicted as the module map of mobile radio station electricity-saving system 10 in the embodiment of the present invention.
Mobile radio station electricity-saving system 10 comprises: cache module 120, judge module 140, timing module 160 and enquiry module 220.Cache module 120, judge module 140 and timing module 160 are arranged in the access point 100.Enquiry module 220 is arranged in the mobile radio station 200.
Cache module 120 is used to store and sends to the data cached of mobile radio station 200.In the present embodiment, when mobile radio station 200 was in battery saving mode, access point 100 was stored in other mobile radio station in the cache module 120 to the data that mobile radio station 200 sends.
In the present embodiment, be not dropped because of sending to mobile radio station 200 for a long time for the data that prevent to be stored in the cache module 120.The mobile radio station 200 that is in battery saving mode changed active mode over to and sends service quality poll (Quality of Service Poll by enquiry module 220 to access point 100 every 5 seconds, QoS-Poll) frame can receive data to inform access point 100 mobile radio stations 200.
In the present embodiment, (whether identical whether Media Access Control MAC) have the data beard and hair to give mobile radio station 200 in the MAC Address of address and mobile radio station 200 cache module 120 of judging access point 100 to purpose media access control layer by the Frame in the contrast cache module 120 of judge module 140.If the target MAC (Media Access Control) address of the Frame in the cache module 120 is identical with the MAC Address of mobile radio station 200, illustrate that then described Frame beard and hair gives mobile radio station 200.Otherwise, illustrate that then described frame need not send to mobile radio station 200.
Timing module 160 is used for record, and (Acknowledgment Ack) picks up counting behind the frame to mobile radio station 200 transmission acknowledgment of your inquiry from access point 100.
In the present embodiment, the timing overtime time of timing module 160 equals centralized coordination function frame period.In the IEEE802.11 agreement frame is divided into three kinds of different priority levels, the frame of every kind of priority level must wait for a period of time before sending, and this time period is called " frame period ".Centralized coordination function interframe is divided into access point 100 shortest time that institute must wait before mobile radio station 200 sends Frames.If the data that oriented mobile radio station 200 sends in the cache module 120 of access point 100, access point 100 sends the data to mobile radio station 200 when timing module 160 timing overtimes after mobile radio station 200 sends the acknowledgment of your inquiry frame, reduce the stand-by period of mobile radio station 200.If the data that do not send in the cache module 120 of access point 100 to mobile radio station 200, access point 100 is after mobile radio station 200 sends the acknowledgment of your inquiry frame, send Echo Frame when timing module 160 timing overtimes, for mobile radio station 200 and give mobile radio station 200, to shorten the time that mobile radio station 200 enters battery saving mode with expression non-avaible beard and hair.In the present embodiment, described Echo Frame is that (its concrete form and set-up mode see also Fig. 3 to the service quality sky for Quality of Service Null, QoS-Null) frame.
See also Fig. 3, be depicted as the field schematic diagram of QoS-Null frame 400.
QoS-Null frame 400 comprises: (Frame CheckSequence, FCS) field 430 for address field 410, control field 420 and Frame Check Sequence.Wherein control field 420 comprises: passage indicates that (Tunnel identifier, TID) field 421, the period of service stop that (End Of Service Period, EOSP) field 422.Control field 420 also comprises other field, in the present embodiment, field related to the present invention only is shown.In embodiment of the present invention, when the EOSP field 422 of access point 100 in the QoS-null frame 400 that mobile radio station 200 sends is set at 1, show that access point 100 does not have the data beard and hair to give mobile radio station 200.
See also Fig. 4, be depicted as the flow chart of mobile radio station electricity saving method in the embodiment of the present invention.
At step S300, mobile radio station 200 is in battery saving mode.
In the present embodiment, for reducing the power consumption of mobile radio station 200, mobile radio station 200 is in battery saving mode when not receiving data.
At step S301, mobile radio station 200 changes active mode over to and sends the inquiry frame to access point 100.
In the present embodiment, the inquiry frame is the service quality poll frame.When mobile radio station 200 was in battery saving mode, the data that access point 100 is given mobile radio station 200 with beard and hair were stored in the cache module 120.For the data that prevent to be stored in the cache module 120 are not dropped because of sending to mobile radio station 200 for a long time.The mobile radio station 200 that is in battery saving mode changes active mode over to every 5 seconds and sends the service quality poll frame to access point 100, can receive data to inform access point 100 mobile radio stations 200.
At step S302, access point 100 sends the acknowledgment of your inquiry frame to mobile radio station 200, and timing module 160 picks up counting.
In the present embodiment, access point 100 has been received the service quality poll frame by inform mobile radio station 200 to mobile radio station 200 transmission acknowledgment of your inquiry frames.
At step S303, access point 100 has judged whether that the data beard and hair gives mobile radio station 200.If have the data beard and hair to give mobile radio station 200 in the cache module 120 of access point 100, then enter step S304.If the free of data beard and hair is given mobile radio station 200 in the cache module 120 of access point 100, then enter step S305.
In the present embodiment, (Media Access Control, whether MAC) MAC Address of address and mobile radio station 200 compares has the data beard and hair to give mobile radio station 200 in the cache module 120 of judging access point 100 with the purpose media access control layer of the Frame in the cache module 120 by judge module 140 for access point 100.If the target MAC (Media Access Control) address of the Frame in the cache module 120 is identical with the MAC Address of mobile radio station 200, illustrate that then described data beard and hair gives mobile radio station 200.Otherwise, illustrate that then described data need not send to mobile radio station 200.
Enter step S304, access point 100 sends data to mobile radio station 200 at the appointed time.
In the present embodiment, the described stipulated time is centralized coordination function frame period, is similarly the timing time of timing module 160.Timing module 160 picks up counting behind step S302, and during the timing overtime, access point 100 sends data to mobile radio station 200
Enter step S305, access point 100 sends Echo Frame to mobile radio station 200 at the appointed time.In the present embodiment, the described stipulated time is centralized coordination function frame period, and described Echo Frame is the QoS-Null frame.
Mobile radio station electricity-saving system 10 and method in the embodiment of the present invention, at every turn at access point 100 after mobile radio station 200 sends the acknowledgment of your inquiry frames, send the frame of data or expression free of data for mobile radio station 200 through centralized coordination function frame period, enter the time of battery saving mode with shortening mobile radio station 200, thereby reduce the power consumption of mobile radio station 200.
Claims (12)
1. a mobile radio station electricity-saving system is applied to comprise in the WLAN system of access point and a plurality of mobile radio stations, is used to save the power consumption of described mobile radio station, it is characterized in that, described mobile radio station electricity-saving system comprises:
Enquiry module is arranged in the described mobile radio station, is used for sending the inquiry frame to described access point after described mobile radio station changes active mode over to;
Judge module is arranged in the described access point, is used for having judged whether after described access point is received described inquiry frame that the data beard and hair gives described mobile radio station; And
Timing module is arranged in the described access point, is used for picking up counting after described mobile radio station sends the acknowledgment of your inquiry frame at described access point, so that described access point sends data to described mobile radio station when described timing module timing overtime.
2. mobile radio station electricity-saving system as claimed in claim 1 is characterized in that, described access point is by 802.11 agreements and described mobile station communicate.
3. mobile radio station electricity-saving system as claimed in claim 1, it is characterized in that, described timing module also is used for picking up counting after described mobile radio station sends the acknowledgment of your inquiry frame at described access point, so that described access point when described timing module timing overtime, sends the frame of expression free of data to described mobile radio station.
4. mobile radio station electricity-saving system as claimed in claim 1 is characterized in that, also comprises: cache module, be arranged in the described access point, and be used to store the data that beard and hair is given the described mobile radio station that is in battery saving mode.
5. mobile radio station electricity-saving system as claimed in claim 1 is characterized in that, the timing overtime time of described timing module equals centralized coordination function frame period.
6. mobile radio station electricity-saving system as claimed in claim 1, it is characterized in that described judge module is by comparing to judge whether have the data beard and hair to give described mobile radio station in the described cache module with the purpose media access control layer address of the Frame in the described cache module and the media access control layer address of described mobile radio station.
7. a mobile radio station electricity saving method is applied to comprise in the WLAN system of access point and a plurality of mobile radio stations, it is characterized in that, described mobile radio station electricity saving method comprises:
Described mobile radio station changes active mode over to by battery saving mode, and sends the inquiry frame to described access point;
Described access point sends the acknowledgment of your inquiry frame to described mobile radio station after receiving described inquiry frame, and picks up counting;
Described access point has judged whether that the data beard and hair gives described mobile radio station;
If described access point has the data beard and hair to give described mobile radio station, then described access point sends the data to described mobile radio station at the appointed time; And
Described mobile radio station enters battery saving mode after receiving the data that described access point sends.
8. mobile radio station electricity saving method as claimed in claim 7 is characterized in that, also comprises: if described access point free of data beard and hair is given described mobile radio station, then at the appointed time Echo Frame is sent to the step of described mobile radio station.
9. mobile radio station electricity saving method as claimed in claim 8 is characterized in that, the described stipulated time is the timing time of described access point.
10. mobile radio station electricity saving method as claimed in claim 9 is characterized in that, the timing time of described access point is centralized coordination function frame period.
11. mobile radio station electricity saving method as claimed in claim 8 is characterized in that, described Echo Frame is the empty frame of service quality.
12. mobile radio station electricity saving method as claimed in claim 7 is characterized in that, described inquiry frame is the service quality poll frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006102007528A CN101114858A (en) | 2006-07-27 | 2006-07-27 | Electricity-saving system and method of mobile station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006102007528A CN101114858A (en) | 2006-07-27 | 2006-07-27 | Electricity-saving system and method of mobile station |
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| CN101114858A true CN101114858A (en) | 2008-01-30 |
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| CNA2006102007528A Pending CN101114858A (en) | 2006-07-27 | 2006-07-27 | Electricity-saving system and method of mobile station |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012136056A1 (en) * | 2011-04-02 | 2012-10-11 | 华为技术有限公司 | Power control method, access point device and terminal station device |
| WO2012163146A1 (en) * | 2011-06-21 | 2012-12-06 | 华为技术有限公司 | Error recovery method, access point equipment, site equipment and system thereof |
| CN102883344A (en) * | 2011-07-15 | 2013-01-16 | 华为终端有限公司 | Method and device for exchanging of wireless network management messages |
| CN103188774A (en) * | 2011-12-29 | 2013-07-03 | 华为技术有限公司 | Method of achieving site sleep, device of achieving site sleep and system of achieving site sleep |
| CN105814965A (en) * | 2013-12-11 | 2016-07-27 | Sca卫生用品公司 | Expanded protocol frames for data transmission |
| US9497704B2 (en) | 2009-01-06 | 2016-11-15 | Thomson Licensing | Method for scheduling wake/sleep cycles by a central device in a wireless network |
-
2006
- 2006-07-27 CN CNA2006102007528A patent/CN101114858A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9497704B2 (en) | 2009-01-06 | 2016-11-15 | Thomson Licensing | Method for scheduling wake/sleep cycles by a central device in a wireless network |
| US10206171B2 (en) | 2009-01-06 | 2019-02-12 | Interdigital Ce Patent Holdings | Method for scheduling wake/sleep cycles by a central device in a wireless network |
| WO2012136056A1 (en) * | 2011-04-02 | 2012-10-11 | 华为技术有限公司 | Power control method, access point device and terminal station device |
| WO2012163146A1 (en) * | 2011-06-21 | 2012-12-06 | 华为技术有限公司 | Error recovery method, access point equipment, site equipment and system thereof |
| CN102883344A (en) * | 2011-07-15 | 2013-01-16 | 华为终端有限公司 | Method and device for exchanging of wireless network management messages |
| WO2013010470A1 (en) * | 2011-07-15 | 2013-01-24 | 华为终端有限公司 | Wireless network management message interaction method and device |
| CN102883344B (en) * | 2011-07-15 | 2015-05-27 | 华为终端有限公司 | Method and device for exchanging of wireless network management messages |
| CN103188774A (en) * | 2011-12-29 | 2013-07-03 | 华为技术有限公司 | Method of achieving site sleep, device of achieving site sleep and system of achieving site sleep |
| WO2013097795A1 (en) * | 2011-12-29 | 2013-07-04 | 华为技术有限公司 | Method, device and system for realizing site sleep |
| CN103188774B (en) * | 2011-12-29 | 2017-02-08 | 华为技术有限公司 | Method of achieving site sleep, device of achieving site sleep and system of achieving site sleep |
| CN105814965A (en) * | 2013-12-11 | 2016-07-27 | Sca卫生用品公司 | Expanded protocol frames for data transmission |
| US10390365B2 (en) | 2013-12-11 | 2019-08-20 | Essity Hygiene And Health Aktiebolag | Expanded protocol frames for data transmission |
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Open date: 20080130 |