CN100411354C - Method of optimizing energy consumption in network ststion - Google Patents
Method of optimizing energy consumption in network ststion Download PDFInfo
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- CN100411354C CN100411354C CNB2005100879240A CN200510087924A CN100411354C CN 100411354 C CN100411354 C CN 100411354C CN B2005100879240 A CNB2005100879240 A CN B2005100879240A CN 200510087924 A CN200510087924 A CN 200510087924A CN 100411354 C CN100411354 C CN 100411354C
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- website
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3206—Monitoring of events, devices or parameters that trigger a change in power modality
- G06F1/3209—Monitoring remote activity, e.g. over telephone lines or network connections
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- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Mobile Radio Communication Systems (AREA)
- Small-Scale Networks (AREA)
Abstract
The invention discloses a method of optimizing the energy consumption of a site in a network. The site receives a downstream data traffic volume and transmits an upstream data traffic volume at specific intervals under the monitoring of an MAC layer. And a self-adapting power saving mode (PSM) is generated according to the ratio between the downstream data traffic volume and the upstream data traffic volume or the received downstream traffic volume at specific time intervals.
Description
Technical field
The present invention relates to a kind of be used for optimizing network website (STA) (method of) energy consumption for example, kneetop computer, palmtop PC or mobile phone, preferably, in WLAN according to ieee standard 802.11.
Background technology
In wireless network, the mobile site that utilizes rechargeable battery to operate usually interconnects each other.Because the energy consumption of mobile site is represented a key factor, has defined specific function and has supported the energy-saving mode of mobile site (PSM).The PSM that defines in IEEE 802.11 standards causes the dependence between the delay in the beacon time interval (BI) and the down link.Downlink delays is defined as: receive moment from access point (AP) at MAC (media interviews control) layer from more high-rise frame, up to AP successfully with its transmission and receive the delay of respective acknowledgement at the MAC layer.The beacon time interval is the time interval that periodically sends beacon from AP.For some BI configuration, the dependence between BI and the downlink delays causes the following fact: downlink delays exceeds the certain threshold level restriction, and therefore no longer allows each application.For example, this real-time application for for example IP phone (VoIP) is very crucial.
In order to eliminate the dependence between BI and the downlink delays, a plurality of modifications have been advised to the standard knot power mode.The method of considering can be divided into two not on the same group.On the one hand, there is initiatively (proactive) method, is used for sending in particular moment under the situation of PS poll, eliminate the dependence between BI and the downlink delays when website, and with whether to receive beacon irrelevant.On the other hand, there is response (reactive) method, utilizes, send the PS poll in that website is waken up to the moment that sends Frame from PSM.As a result, eliminated dependence between BI and the downlink delays.Yet its shortcoming is, under the situation of response method, has introduced the dependence of transmitting uplink data ratio.For active and response method, referring to the open No.P2004-260386 of Japanese patent unexamined application that submits on February 25th, 2003 by the applicant.
Above-mentioned these two kinds improvement (initiatively and response method) occurred for specific descending/the similar problem of the hypothesis of uplink service pattern.Usually, under the situation of active method, the specified time interval that sends the PS poll is set to be shorter than the beacon time interval, to guarantee that can not exceed maximum downstream postpones.Depend on each application, active method may cause unnecessarily producing some PS poll.As an example, this appears at burst mode rather than constant rate of speed under the network browsing situation of access point received frame.
For response method, an one bigger defective is, under the situation of expansion upstream data service (for example, in the framework of ftp uplink), has produced a large amount of PS polls, and this is unnecessary for the descending application with lower data rate.
In order to address the above problem, can use required downlink delays according to each, define multiple PSM configuration.Although this means for the user to have quite a lot of extra expense, it still has to select between a plurality of options according to situation separately.This overhead is not user-friendly in practice.
Summary of the invention
An object of the present invention is to provide a kind of method of optimizing the energy consumption of the website in the above-mentioned type network in such a way,, need not any active operation of user so that can be suitable for the actual data traffic amount of website.
The method that is used for optimizing the energy consumption of network website according to the present invention has solved the problems referred to above.According to the present invention, website is monitored it in the downstream data traffic amount of MAC (media interviews control) layer reception and the upstream data service amount of transmission in specified time interval, and produces suitable energy-saving mode according to the downstream data traffic amount that receives in ratio between descending and the upstream data service amount or the specified time interval.
According to the present invention, recognized under the situation of known general approach, do not consider the actual data traffic amount of website, therefore,, do not optimize the energy consumption of website owing to unnecessarily send the PS poll.In addition, recognize, then can optimize energy consumption if website is monitored the downstream data traffic amount of its reception and the upstream data service amount of transmission at the MAC layer between specified time interval.Based on this information, it is still asymmetric specific that website can determine that existing uplink and downlink traffic carrying capacity shows symmetry.According to the present invention, produce the energy-saving mode that is suitable for present case according to the downstream data traffic amount that receives in ratio between descending and the upstream data service amount or the specified time interval.
In this pattern, send and satisfy the maximum necessary PS poll of downlink delays that allows.Therefore, those stages that described website remains on " sleep pattern " of energy saving not only can be prolonged, signaling load can also be reduced.
Should be noted that under situation following data business volume must be predictable according to the inventive method, wherein " future " refer to the time period in tens of milliseconds of scopes.This condition normally contentedly, especially under situation about using in real time, voice application for example.
Description of drawings
Fig. 1 shows the schematic diagram according to the website energy consumption optimization method of the embodiment of the invention;
Fig. 2 shows the schematic diagram of realization according to the website of the website energy consumption optimization method of the embodiment of the invention; And
Fig. 3 shows the flow chart according to the operation of the website energy consumption optimization method of the embodiment of the invention.
Embodiment
With reference to Fig. 1 and 2, UL/DL data monitoring device will send to access point (promptly in the monitoring of MAC layer, be sent to lower floor from the upper strata) upstream data and the downlink data that receives from access point (promptly, be sent to the upper strata from lower floor), the PSM controller uses monitored uplink and downlink data business volume to carry out energy-saving mode control.
In the framework of present embodiment, as shown in Figure 3, suppose when the ratio that calculates between descending and the upstream data service amount the only number of the referenced stations frame that received and sent, rather than the absolute quantity of data.This method is favourable, this be because the required time span of transfer of data usually much smaller than the required time of access wireless channel.
If the ratio that calculates is near 1, this represents ratio very symmetrical between descending and the upstream data service amount.On the contrary, the asymmetric ratio of ratio distance 1 expression far away.
If downstream data traffic amount (DL) greater than 1 (R＞1), then can preferably be selected initiatively energy-saving mode with respect to the ratio R=DL/UL of upstream data service amount (UL).Opposite with response method, under the situation with more downstream data traffic amounts, initiatively energy-saving mode (that is, sends the PS poll at the specified time interval place, with whether to have received beacon irrelevant) advantage be to have less delay at the frame of the website of access point place buffering.
On the contrary, if the downstream data traffic amount with respect to the ratio of upstream data service amount less than 1 (R=＜1), preferably select the response energy-saving mode.When in the response energy-saving mode, if because the upstream data service amount has been waken website by any way up, then send the PS poll, the ratio between the descending and upstream data service amount has caused the more energy saving less than 1 response energy-saving mode.
For may effectively sending of PS poll, can suppose according to the ratio between descending and the upstream data service amount, or the downstream data traffic amount that during specified time interval, receives (DL/ time), define the time interval that sends the PS poll from website to access point.Can be with reference to this ratio or DL/ time, so as in the active energy-saving mode definition PS polling time interval, and the upstream rate of in the response energy-saving mode, determining to send the PS poll.
For the further optimization of energy consumption, can suppose that the energy-saving mode of selecting automatically is adapted to the variation ratio between descending and the upstream data service amount.Utilize this self adaptation behavior, when the ratio that calculates between descending and the upstream data service amount, can reflect owing to gather the data mixing that (aggregated) data business volume causes.Therefore, especially move simultaneously under the situation of a plurality of application programs, the remarkable saving of energy can occur the user.
At the framework of the embodiment that especially will be used for using in real time, the algorithm that postpones by relevant maximum downstream produces energy-saving mode.By so doing, guarantee that website can in time receive as delay-sensitive datas such as speech datas.
At last, should be noted that the multiple possibility that has design and improve benefit gained from others' wisdom of the present invention, therefore, should be with reference to the claim that is subordinated to claim 1.
Claims (13)
1. method that is used for optimizing the energy consumption of network website comprises:
At described website place,
The downstream data traffic amount that monitoring receives between specified time interval and the upstream data service amount of transmission; And
According to the ratio between downstream data traffic amount and the upstream data service amount, produce adaptive session power mode (PSM),
Wherein calculate ratio between downstream data traffic amount and the upstream data service amount according to the number of the Frame that receives and send.
2. method according to claim 1 is characterized in that, the downstream data traffic amount with respect to the ratio of upstream data service amount greater than 1 situation under, select initiatively energy-saving mode (PSM).
3. method according to claim 1 is characterized in that, the downstream data traffic amount with respect to the ratio of upstream data service amount less than 1 situation under, select response energy-saving mode (PSM).
4. method according to claim 1 is characterized in that, according to the ratio between downstream data traffic amount and the upstream data service amount, definition (PS) poll that will economize on electricity sends to time interval of access point (AP) from website.
5. method according to claim 1 is characterized in that, according to the downstream data traffic amount that receives during specified time interval, definition (PS) poll that will economize on electricity sends to time interval of access point (AP) from website.
6. method according to claim 1 is characterized in that, selected energy-saving mode (PSM) automatically is adapted to the variation ratio between downstream data traffic amount and the upstream data service amount.
7. method according to claim 1 is characterized in that, the algorithm that postpones by relevant maximum downstream produces energy-saving mode (PSM).
8. method according to claim 1 is characterized in that, in MAC layer monitoring downstream data traffic amount and upstream data service amount.
9. method according to claim 1 is characterized in that, described network is the WLAN according to ieee standard 802.11, and wherein website is one of following: website on knee, hand held website and mobile site.
10. method that is used for optimizing the energy consumption of network website comprises:
At described website place,
The downstream data traffic amount that monitoring receives during specified time interval; And
According to the downstream data traffic amount that during specified time interval, receives, produce adaptive session power mode (PSM),
Wherein, monitor the downstream data traffic amount as the number of the Frame that receives.
11. method according to claim 10 is characterized in that, described network is the WLAN according to ieee standard 802.11, and wherein website is one of following: website on knee, hand held website and mobile site.
12. the website in the network comprises:
Supervising device is used to monitor the downstream data traffic amount of its reception between specified time interval and the upstream data service amount of its transmission; And
Control device according to the ratio between downstream data traffic amount and the upstream data service amount, produces adaptive session power mode (PSM),
Wherein calculate ratio between downstream data traffic amount and the upstream data service amount according to the number of the Frame that receives and send.
13. the website in the network comprises:
Supervising device is used to monitor the downstream data traffic amount that receives during specified time interval; And
Control device according to the downstream data traffic amount that receives, produces adaptive session power mode (PSM) during specified time interval,
Wherein, monitor the downstream data traffic amount as the number of the Frame that receives.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004036945.3 | 2004-07-29 | ||
| DE200410036945 DE102004036945B4 (en) | 2004-07-29 | 2004-07-29 | Method for optimizing the energy consumption of a station in a network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1728654A CN1728654A (en) | 2006-02-01 |
| CN100411354C true CN100411354C (en) | 2008-08-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100879240A Expired - Fee Related CN100411354C (en) | 2004-07-29 | 2005-07-27 | Method of optimizing energy consumption in network ststion |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4161988B2 (en) |
| CN (1) | CN100411354C (en) |
| DE (1) | DE102004036945B4 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080002733A1 (en) * | 2006-06-30 | 2008-01-03 | Ilan Sutskover | Method and apparatus for scheduling transmissions in multiple access wireless networks |
| CN101572610B (en) | 2008-04-28 | 2011-06-08 | 鸿富锦精密工业（深圳）有限公司 | Network device and method for switching working modes thereof |
| JP5329581B2 (en) | 2011-02-04 | 2013-10-30 | 株式会社東芝 | Wireless communication terminal and wireless communication method |
| JP5814829B2 (en) * | 2012-03-01 | 2015-11-17 | 株式会社東芝 | Wireless communication apparatus and method |
| DE202012003769U1 (en) | 2012-04-16 | 2013-01-22 | Axel Weber | Rollformvorrichtung for roll forming a roll of material strip |
| CN110955324B (en) * | 2019-11-27 | 2021-07-27 | 维沃移动通信有限公司 | Method for reducing power consumption and electronic equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1323495A (en) * | 1998-08-14 | 2001-11-21 | 艾利森电话股份有限公司 | Method and apparatus for power saving in a mobile terminal with established connections |
| WO2003034599A2 (en) * | 2001-10-19 | 2003-04-24 | Interdigital Technology Corporation | System for improved power savings during full dtx mode of operation in the downlink |
| US20030086443A1 (en) * | 2001-11-07 | 2003-05-08 | Robert Beach | Power saving function for wireless LANS: methods, system and program products |
| JP2004187002A (en) * | 2002-12-03 | 2004-07-02 | Sony Corp | Radio communication terminal, communication control method, and communication control program |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7337337B2 (en) * | 2003-01-13 | 2008-02-26 | Samsung Electronics Co., Ltd. | Apparatus and method of reducing power consumption using power-save polling list |
-
2004
- 2004-07-29 DE DE200410036945 patent/DE102004036945B4/en not_active Expired - Fee Related
-
2005
- 2005-07-04 JP JP2005194556A patent/JP4161988B2/en not_active Expired - Fee Related
- 2005-07-27 CN CNB2005100879240A patent/CN100411354C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1323495A (en) * | 1998-08-14 | 2001-11-21 | 艾利森电话股份有限公司 | Method and apparatus for power saving in a mobile terminal with established connections |
| WO2003034599A2 (en) * | 2001-10-19 | 2003-04-24 | Interdigital Technology Corporation | System for improved power savings during full dtx mode of operation in the downlink |
| US20030086443A1 (en) * | 2001-11-07 | 2003-05-08 | Robert Beach | Power saving function for wireless LANS: methods, system and program products |
| JP2004187002A (en) * | 2002-12-03 | 2004-07-02 | Sony Corp | Radio communication terminal, communication control method, and communication control program |
Non-Patent Citations (2)
| Title |
|---|
| Power-Saving Mechanisms in Emerging StandardsforWireless LANs:. HAGEN WOESNER,JEAN-PIERREEBERT,MORTENSCHLAGER,ADAM WOLISZ.IEEE Personal Communications. 1998 |
| Power-Saving Mechanisms in Emerging StandardsforWireless LANs:. HAGEN WOESNER,JEAN-PIERREEBERT,MORTENSCHLAGER,ADAM WOLISZ.IEEE Personal Communications. 1998 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102004036945A1 (en) | 2006-03-23 |
| CN1728654A (en) | 2006-02-01 |
| JP2006042322A (en) | 2006-02-09 |
| DE102004036945B4 (en) | 2007-05-24 |
| JP4161988B2 (en) | 2008-10-08 |
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Granted publication date: 20080813 Termination date: 20180727 |