CN101005656A - Sleep control method for mobile communication terminal - Google Patents
Sleep control method for mobile communication terminal Download PDFInfo
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- CN101005656A CN101005656A CNA2006100014480A CN200610001448A CN101005656A CN 101005656 A CN101005656 A CN 101005656A CN A2006100014480 A CNA2006100014480 A CN A2006100014480A CN 200610001448 A CN200610001448 A CN 200610001448A CN 101005656 A CN101005656 A CN 101005656A
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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
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 received signal, because ionospheric variation, decline and received signal condition 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, the strong and weak very signal power of great disparity 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 under 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 received signal RSSI (indication of received signal strenth indication received signal intensity) 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 improve receptivity according to the gain of the real-time control terminal of receive channel.
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 the received signal RSSI value that user equipment (UE) is measured by AGC and approached 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 adjustment amount else if 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 consideration for the stability and the realizability of system, 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 of received signal value during more than or equal to alpha+beta or smaller 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 desired value α as early as possible, and when the RSSI of received signal value during smaller 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 that receives data, so when expectation reception important information or business information, terminal has 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 Receiving after waking up, as synchronously heavy, carries out Data Receiving (Synchronization Control and the AGC that also carry out normal idle condition simultaneously adjust) subsequently.As shown in Figure 1, the accurate reception of data must be based upon on the basis that heavy back synchronously is regularly 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 the relatively frequent environment of channel fading, terminal is in the AGC labile state before sleep so, and then waking up, back AGC is stable to need the relatively long time.If finish the just direct data (as paging indication monitoring information or system information) that receive expection in heavy back synchronously, the quality of influence reception causes the Data Receiving decreased performance probably, even decoding error.And, if the paging information that receives does not comprise this user profile,, begin the sleep procedure of a new round again according to the criterion of " can sleep and then sleep ", then can aggravate the instable risk of AGC.At present, also do not have technology to relate to whether need 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 received signal, entering the AGC stable state behind the terminal wake-up, thereby improve the Data Receiving performance.
The present invention wakes up the back stable time of AGC by predicting with the adjusted value of AGC before the 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 the 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 at 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 AGC earlier 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, the channel fading situation before and after the mobile communication terminal sleep that makes 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, though 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 under the very big 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 weighing the flow chart that carries out the AGC adjustment synchronously with the reception 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 earlier 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 compares with prior art 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.
Provide before sleep AGC below and do not reach under the stable situation, allow terminal AGC before the back Data Receiving is waken up in sleep reach two kinds of stable schemes.These two kinds of schemes all are based on the adjustment of removing to carry out AGC to the terminal time enough, make AGC progressively reach stable status by the adjustment of a period of time.
Scheme one: after the each sleep of terminal is waken up, reserve time enough regularly and carry out the adjustment of AGC, and then received signal.Here " reservation time enough " is a fixed value, and it rule of thumb is worth and obtains.This scheme suitable in concrete environment has certain limitation, has the too much or too short risk of reserving of time.
Scheme two: only just reserve time enough when needed and carry out AGC and adjust, after entering the AGC stable state, received signal again.
For the consideration that reduces mobile telephone power consumption as far as possible, second kind of scheme is better than first kind of scheme, but realizes that meeting is complicated.Stress scheme two below.
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 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 test to the actual performance of hardware.Before mobile communication terminal entered sleep, the RSSI value that receives data by last frame before will sleeping was compared with desired value α, judges whether AGC reaches stable state.When the RSSI of received signal value surpassed desired value α, AGC did not enter stable state., being tending towards desired value α in order to make the RSSI value, the RSSI value that receives data by last frame before will sleeping is compared with desired value α, tries 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 of received signal value during more than or equal to alpha+beta or smaller 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, adjust step-length χ with the stage then 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 be used for limiting 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 (6)
1. a sleep control method for mobile communication terminal is characterized in that,
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 AGC earlier and adjust after waking up, paging receiving is indicated or system signal again after AGC enters stable state.
2. method according to claim 1 is characterized in that, comprises the steps:
1) before mobile communication terminal enters sleep, judges whether AGC reaches stable;
2) when judging that AGC does not reach when stablize, the adjusted value by AGC before sleeping calculates the frame number N that sleep awakening need shift to an earlier date, and according to institute's result calculated, control terminal shifts to an earlier date the N frame wakes up, and carries out the AGC adjustment; 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.
3. method according to claim 1 is characterized in that,
In described step 1), come target setting value α by test to the actual performance of hardware, before mobile communication terminal entered sleep, the RSSI value that receives data by last frame before will sleeping was compared with desired value α, judges whether AGC reaches stable state.
4. method according to claim 3 is characterized in that,
In described step 2) in, also to set the maximum of every frame and adjust step-length β, the RSSI value that receives data by last frame before will sleeping is compared with desired value α, tries to achieve AGC adjusted value AdjustValue, calculates N according to following formula then:
5. according to claim 3 or 4 described methods, it is characterized in that,
In described step 2), also the setting stage is adjusted step-length χ, when the RSSI of received signal value during more than or equal to alpha+beta or smaller 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, adjust step-length χ with the stage then and adjust, make the RSSI value be tending towards desired value α, make AGC enter stable state.
6. a sleep control method for mobile communication terminal is characterized in that,
Reserve time enough, make 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.
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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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102316476A (en) * | 2010-06-30 | 2012-01-11 | 重庆重邮信科通信技术有限公司 | 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5991600A (en) * | 1997-07-09 | 1999-11-23 | Ericsson Inc. | Integration of mobile station channel measurement with paging channel displacement operation in a wireless communications system |
| CN1112066C (en) * | 2000-05-11 | 2003-06-18 | 英业达集团（南京）电子技术有限公司 | The method of adjustment and the device of the mounted terminal acc power output of wireless association |
| US7085255B2 (en) * | 2000-10-19 | 2006-08-01 | Interdigital Technology Corporation | 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 |
| KR20040103196A (en) * | 2003-05-31 | 2004-12-08 | 엘지전자 주식회사 | Automatic gain controlling method in mobile phone |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102316476A (en) * | 2010-06-30 | 2012-01-11 | 重庆重邮信科通信技术有限公司 | Different-frequency cell measuring method for mobile terminal in case of wake-up from sleep |
| 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 |
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Effective date of registration: 20120216 Address after: 201206 Pudong New Area Mingyue Road, Shanghai, No. 1258 Applicant after: Leadcore Technology Co., Ltd. Address before: 201206 Pudong New Area Mingyue Road, Shanghai, No. 1258 Applicant before: Leadcore Technology Co., Ltd. Co-applicant before: Datang Mobile Communication Equipment Co., Ltd. Co-applicant before: Datang Mobile Communication Equipment Co., Ltd., Shanghai |
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