CN101005656B - Sleep control method for mobile communication terminal - Google Patents
Sleep control method for mobile communication terminal Download PDFInfo
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- CN101005656B CN101005656B CN2006100014480A CN200610001448A CN101005656B CN 101005656 B CN101005656 B CN 101005656B CN 2006100014480 A CN2006100014480 A CN 2006100014480A CN 200610001448 A CN200610001448 A CN 200610001448A CN 101005656 B CN101005656 B CN 101005656B
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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
Abstract
The method comprises: when the channel fading happens at the time before and after the terminal enters into sleeping state, the adjusted value of AGC before sleeping is used to forecast the time length required by adjusting AGC after sleeping; after waking up the communication terminal, firstly the AGC is adjusted; until the AGC is at a stable state, the terminal just receives paging indication or system information.
Description
Technical field
The present invention relates to the mobile communication terminal control technology of the communications field, relate in particular to the sleep control method of mobile communication terminal.
Background technology
In communication system, receiver is when receiving signal, because ionospheric variation, decline and reception signal conditioning etc. are different, its input end signal level in very large range changes.And the power output of receiver to be size with extraneous signal change, strong and weak very greatly different signal power can appear in the output of receiver.For this reason, emphasize very much AGC (automatic gain control, automatic gain control) circuit in the receiver.Agc circuit is a kind of in the situation that input signal amplitude alters a great deal, and makes amplitude output signal keep automatic control circuit constant or that only change in more among a small circle.Its basic principle is to produce a direct current AGC voltage that changes with incoming level, utilize some amplifier unit of AGC voltage control (as in put) gain, the receiver overall gain is changed according to certain rule.UE adjusts adjustment direction and the step-length that strategy is determined AGC according to reception signal RSSI (the received signal strenth indication received signal strength indicator) value that measures and corresponding AGC, by inquiry AGC form, obtain the variable gain amplifier control word, reach the purpose of automatic gain control.Like this, can according to the gain of the real-time control terminal of receive channel, improve receptivity.
On the one hand, when the radio-frequency devices of terminal was operated in desired value, the performance of receiver was the most desirable, therefore, generally adjusted by AGC and made reception signal RSSI value that user equipment (UE) measures close to desired value.But consider the fail safe of terminal capabilities and the operability of hardware, each adjustment step-length is conditional, usually set the maximum step-length β that adjusts, when calculating adjustment amount greater than β, just adopt β as adjustment amount, calculate else if adjustment amount greater than β, one time adjusting range is excessive, is unfavorable for the stable of terminal.Strategy about AGC adjusts relates to the adjustment direction step-length of AGC etc., and this different phase and different platform according to terminal is all different.Such as, under idle condition, adopting every frame to carry out AGC adjusts, and the consideration for Systems balanth and realizability, target setting value α (reference value of radio-frequency devices work perfect condition is provided by the hardware business men), the maximum of every frame is adjusted step-length β (being positive and negative both direction equally), and the stage of every frame is adjusted step-length χ.When the RSSI value that receives signal during more than or equal to alpha+beta or less than or equal to alpha-beta (be called AGC enough stable state), the available maximum step-length β that adjusts of usage platform, make the RSSI value be tending towards as early as possible desired value α, and when the RSSI value that receives signal during less than or equal to alpha+beta or more than or equal to alpha-beta, can make the RSSI value be tending towards desired value α by adjusting step-length χ, thereby make AGC enter stable state.If AGC is enough unstable, be easy to have influence on accuracy and the reliability of receive data, so when expectation received important information or business information, terminal had entered the AGC stable state.
On the other hand, in order to save power consumption, mobile communication terminal can enter sleep at one's leisure.For normally waking up, depend on paging indication that nearest needs receive and system information the length of one's sleep constantly, that is to say and control the length of one's sleep before the sleep well so that wake up carry out heavy synchronous two frames after, just can paging receiving and system information.Terminal needs to get ready for ensuing data receiver after waking up, as synchronously heavy, carries out subsequently data receiver (Synchronization Control and the AGC that also carry out normal idle condition simultaneously adjust).As shown in Figure 1, the accurate reception of data must be based upon on the heavy synchronously rear regularly basis that accurate and AGC is stable.But heavy can only guarantee synchronously regularly can't guarantee that accurately this moment AGC is stable.If terminal is in a channel fading relatively frequently in the environment, terminal is in the AGC labile state before sleep so, and the rear AGC that then wakes up is stable to need the relatively long time.If finish the heavy synchronously rear just direct data (indicating monitoring information or system information such as paging) that receive expection, probably the quality of impact reception causes the data receiver hydraulic performance decline, even decoding error.And, if the paging information that receives does not comprise this user profile, according to the criterion of " can sleep and then sleep ", begin again the sleep procedure of a new round, then can aggravate the instable risk of AGC.At present, also do not have technology to relate to whether need to behind sleep awakening, to receive to carry out the stable and corresponding strategy of adjusting of AGC before the significant data.
Summary of the invention
The purpose of this invention is to provide the AGC method of adjustment after a kind of mobile communication equipment terminal sleep wakes up, guaranteeing before receiving signal, entering the AGC stable state behind the terminal wake-up, thereby improve the data receiver performance.
The present invention wakes up the stable time of rear AGC by predicting with the adjusted value of the front AGC of terminal sleep, before sleep, the length of one's sleep of control terminal, making physical layer shift to an earlier date the N frame wakes up, thereby there is enough time to carry out the AGC adjustment after making terminal wake-up, after having entered the AGC stable state in terminal, paging receiving indication is monitored and system update information again, can guarantee that like this terminal correctly resolves paging indication and system update information.The AGC here adjusts strategy, and only the paging receiving indication is monitored or the interstage of system information data for arriving behind the sleep awakening.
According to an aspect of the present invention, provide a kind of sleep control method for mobile communication terminal, its channel fading situation before and after mobile communication terminal sleep exists when changing, and predicts that by the AGC adjusted value before sleeping carrying out AGC after the sleep adjusts the required time; Carry out first AGC and adjust after waking up, paging receiving is indicated or system signal again after AGC enters stable state.
According to a further aspect in the invention, a kind of sleep control method for mobile communication terminal is provided, it reserves time enough, so that the channel fading situation before and after the mobile communication terminal sleep exists when changing, mobile communication terminal carries out AGC after each sleep is waken up adjusts, and then paging receiving and system signal.
Advantage of the present invention and improvements are to predict by the AGC adjustment trend before sleeping the adjustment trend of the AGC after the sleep, and take different AGC to adjust the time (method by control length of one's sleep realizes) according to this trend, the receptivity of data behind the raising sleep awakening, simultaneously to not having too much influence the length of one's sleep, although because sacrificed the part-time of sleep the stabilization time of AGC, but most of communication environment situation, do not need too much AGC stabilization time, only in the very large situation of channel circumstance decline, need more AGC stabilization time, but also brought the raising of receptivity.
Description of drawings
Fig. 1 has provided sleep awakening flow chart under the prior art;
Fig. 2 has provided sleep awakening flow process of the present invention.
Embodiment
Specifically describe the present invention below in conjunction with accompanying drawing.
Fig. 2 provides the present invention and carry out the flow chart that AGC adjusts in synchronously heavy and receive data interstage after mobile communication terminal wakes up from sleep state.The difference of the present invention and prior art is, wakes up, the heavy AGC that will carry out first after synchronously is stable, so that AGC is stable when paging receiving information and system information data.Suppose paging receiving, system information data all at fixed time, the present invention is compared with existing technology so, and terminal of the present invention is owing to will wake up in time early and come to carry out AGC and adjust, so the length of one's sleep is short.
The below provides as the front AGC that sleep and does not reach in the stable situation, allow terminal after sleep is waken up before the data receiver AGC reach stable two schemes.This two schemes all is based on the adjustment of removing to carry out AGC to the terminal time enough, so that the adjustment of AGC by a period of time progressively reaches stable state.
Scheme one: after the each sleep of terminal is waken up, reserve time enough regularly and carry out the adjustment of AGC, and then receive signal.Here " reservation time enough " is a fixed value, and it rule of thumb is worth and obtains.Applicable in specific environment of this scheme has certain limitation, has the too much or too short risk of time of reserving.
Scheme two: only just reserve when needed time enough and carry out the AGC adjustment, after entering the ASC stable state, receive again signal.
For the consideration that reduces as far as possible mobile telephone power consumption, first scheme is better than the first scheme, but realizes that meeting is complicated.The below stresses scheme two.
In scheme two, because in the ordinary course of things, it is similar that the channel fading situation of terminal before and after sleep changes, and therefore, can predict that the AGC after need to how long sleeping adjusts by the AGC adjusted value before sleeping.Concrete grammar is as follows:
Come the maximum of target setting value α, every frame to adjust step-length β by the test to the actual performance of hardware.Before mobile communication terminal enters sleep, compare with desired value α by the RSSI value of last frame receive data before will sleeping, judge whether AGC reaches stable state.When the RSSI value that receives signal surpassed desired value α, AGC did not enter stable state., be tending towards desired value α in order to make the RSSI value, compare with desired value α by the RSSI value of last frame receive data before will sleeping, try to achieve adjusted value AdjustValue.Come computing terminal to shift to an earlier date the frame number N of sleep awakening according to adjusted value AdjustValue, the computing formula of N is as follows:
After obtaining the stable adjusting frame number N that needs of AGC, just can control the length of one's sleep before the sleep, make terminal shift to an earlier date the N frame and wake up, carry out sufficient AGC after waking up and stablize.
In addition, also the setting stage is adjusted step-length χ, when the RSSI value that receives signal during more than or equal to alpha+beta or less than or equal to alpha-beta, use the maximum step-length β that adjusts, make the RSSI value as early as possible within the domain of walker of target approach value α, then adjust step-length χ with the stage and adjust, make the RSSI value be tending towards desired value α, make AGC enter stable state.
Method of the present invention can be used for 3G, GSM, TD-CDMA system.
Foregoing is not to limit the specific embodiment of the present invention, and all modification and change or combinations of carrying out according to the main inventive concept of this method all should belong to protection range of the presently claimed invention.
Claims (3)
1. sleep control method for mobile communication terminal, described mobile communication terminal precognition paging receiving, system information data is characterized in that at fixed time,
Before mobile communication terminal enters sleep, come target setting value α by the test to the actual performance of hardware, before mobile communication terminal enters sleep, RSSI value by last frame receive data before will sleeping is compared with desired value α, judge whether AGC reaches stable state, try to achieve AGC adjusted value Adjust Value;
When judging that AGC does not reach when stablize, calculate the frame number N that sleep awakening need to shift to an earlier date by the front described AGC adjusted value of sleeping,
β adjusts step-length for the maximum of setting; According to the result who calculates, control terminal shifts to an earlier date the N frame and wakes up; Carry out first AGC and adjust after waking up in advance, paging receiving is indicated or system signal again after AGC enters stable state;
When judging that AGC has reached when stablize, mobile communication terminal is slept according to common sleep control flow, need not to wake up in advance.
2. method according to claim 1 is characterized in that,
Also the setting stage is adjusted step-length χ, when the RSSI value that receives signal during more than or equal to alpha+beta or less than or equal to alpha-beta, use the maximum step-length β that adjusts, make the RSSI value as early as possible within the domain of walker of target approach value α, then adjusting step-length χ with the stage adjusts, make the RSSI value be tending towards desired value α, make AGC enter stable state.
3. sleep control method for mobile communication terminal, described mobile communication terminal precognition paging receiving, system information data is characterized in that at fixed time,
Reserve the enough time that a fixing rule of thumb value obtains, so that judging that by judging that AGC is unstable channel fading situation before and after the mobile communication terminal sleep exists when changing, mobile communication terminal carries out AGC and adjusts after each sleep is waken up in advance, and then paging receiving and system signal
Wherein, come target setting value α by the test to the actual performance of hardware, before mobile communication terminal enters sleep, compare with desired value α by the RSSI value of last frame receive data before will sleeping, judge whether AGC stablizes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2006100014480A CN101005656B (en) | 2006-01-17 | 2006-01-17 | Sleep control method for mobile communication terminal |
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| CN2006100014480A CN101005656B (en) | 2006-01-17 | 2006-01-17 | Sleep control method for mobile communication terminal |
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| CN101005656B true CN101005656B (en) | 2013-04-24 |
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| CN102316476B (en) * | 2010-06-30 | 2016-07-27 | 重庆重邮信科通信技术有限公司 | A kind of different-frequency cell measuring method for mobile terminal in case of wake-up from sleep |
| CN104753616B (en) * | 2013-12-30 | 2018-01-26 | 展讯通信（上海）有限公司 | The automatic gain control calibration method and apparatus of communication terminal |
Citations (5)
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|---|---|---|---|---|
| CN1262855A (en) * | 1997-07-09 | 2000-08-09 | 艾利森公司 | Integration of mobile station channel measurement with paging channel displacement operation in wireless communications system |
| CN1324197A (en) * | 2000-05-11 | 2001-11-28 | 英业达集团（南京）电子技术有限公司 | Power output regulating method and regulator for radio auxiliary terminal |
| CN1470108A (en) * | 2000-10-19 | 2004-01-21 | ��������λ�Ƽ���˾ | Selectively activated AGC signal measurement unit |
| JP2004134917A (en) * | 2002-10-09 | 2004-04-30 | Matsushita Electric Ind Co Ltd | Automatic gain control apparatus, wireless receiver, and automatic gain control method |
| CN1574992A (en) * | 2003-05-31 | 2005-02-02 | 乐金电子(中国)研究开发中心有限公司 | Automatic gain regulating method of mobile phone |
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- 2006-01-17 CN CN2006100014480A patent/CN101005656B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1262855A (en) * | 1997-07-09 | 2000-08-09 | 艾利森公司 | Integration of mobile station channel measurement with paging channel displacement operation in wireless communications system |
| CN1324197A (en) * | 2000-05-11 | 2001-11-28 | 英业达集团（南京）电子技术有限公司 | Power output regulating method and regulator for radio auxiliary terminal |
| CN1470108A (en) * | 2000-10-19 | 2004-01-21 | ��������λ�Ƽ���˾ | Selectively activated AGC signal measurement unit |
| JP2004134917A (en) * | 2002-10-09 | 2004-04-30 | Matsushita Electric Ind Co Ltd | Automatic gain control apparatus, wireless receiver, and automatic gain control method |
| CN1574992A (en) * | 2003-05-31 | 2005-02-02 | 乐金电子(中国)研究开发中心有限公司 | Automatic gain regulating method of mobile phone |
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