CN1574992A - Automatic gain regulating method of mobile phone - Google Patents
Automatic gain regulating method of mobile phone Download PDFInfo
- Publication number
- CN1574992A CN1574992A CNA2003101232366A CN200310123236A CN1574992A CN 1574992 A CN1574992 A CN 1574992A CN A2003101232366 A CNA2003101232366 A CN A2003101232366A CN 200310123236 A CN200310123236 A CN 200310123236A CN 1574992 A CN1574992 A CN 1574992A
- Authority
- CN
- China
- Prior art keywords
- agc
- gain
- mobile phone
- received signal
- automatic gain
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72448—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
- H04W52/0245—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal according to signal strength
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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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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Circuits Of Receivers In General (AREA)
- Mobile Radio Communication Systems (AREA)
- Control Of Amplification And Gain Control (AREA)
Abstract
The present invention relates to a method for controlling an automatic gain of a mobile phone to reduce power consumption and time required for stabilizing a gain value in automatically controlling a gain of discontinuous receiving signals. The invention comprises three steps: first, if a system is turned on, it is confirmed whether an effective receiving signal is inputted. If so, an AGC is driven at a predetermined offset gain value. Second, when the effective receiving signal is interrupted, the current AGC output gain value is stored and the AGC is stopped. Third, it is confirmed whether the effective receiving signal is inputted. If so, the AGC is driven again at the stored AGC output gain. It is confirmed whether the AGC driving stoppage is requested.
Description
Technical field
The present invention relates to Wireless Telecom Equipment automatic gain regulation technologies to received signal such as mobile phone, the automatic gain control method that particularly relates to a kind of mobile phone, when the gain of the discontinuous received signal of automatic adjusting, can reduce the power consumption of receiving equipment, shorten the constant gain required time of value.
Background technology
Generally speaking, so-called automatic gain controller (AGC:Automatic Gain Controller) is meant the amplitude change that detects wireless receiver or amplifier input signal, regulates gain automatically, makes the amplitude of output signal remain certain device.
Fig. 1 has shown the kind of the AGC driving method of conventional art.
That is when input signal is shown in Fig. 1 (a), be (b), no matter whether exist received signal all to drive the method for AGC.
(c) be the method for closing AGC in the interval that does not have received signal.That is, not in the method for receiving terminal using gain (gain).
In addition, (d) be the method for freezing AGC action in the interval that does not have received signal.That is, do not detect the signal level of receiving terminal, freeze the mode of AGC output gain with the last yield value in the interval that has received signal.
But, in this AGC driving method in the past, no matter whether received signal exists the method that all drives AGC to have a kind of like this shortcoming, promptly, the power consumption of receiving terminal is big, because gain-adjusted is carried out in input to unwanted virtual (dummy) signal, in the zero hour of next reception valid period, gain stabilizationization needs a lot of times on the contrary.In addition, though can greatly not reduce the power consumption of receiving terminal, there is such shortcoming to the method for receiving terminal using gain, promptly, at next reception valid interval, owing to move with the AGC initial condition, so can't guarantee the gain that gain stabilizationization is required.In addition, freeze the method for AGC action in the interval that does not have received signal and compare, exist the required time of gain stabilizationization longer, the shortcoming that power consumption is bigger than above-mentioned second method with above-mentioned two kinds of methods.
Summary of the invention
Therefore, the object of the present invention is to provide a kind of automatic gain control method of mobile phone, useful signal can restarted to import, when driving AGC again, the AGC of storage gain before utilizing, when reducing power consumption, shorten to greatest extent in the required time of the gain stabilizationization of next reception valid interval.
The automatic gain control method of mobile phone of the present invention is made of following three processes: the 1st process behind the power supply of open system, if imported effective received signal, then drives AGC with the compensating gain value of having set; The 2nd process confirms that the input of above-mentioned effective received signal is cut off, and preserves present AGC output gain value, stops AGC then and drives; The 3rd process confirms to re-enter effective received signal, drives AGC again with the AGC yield value of above-mentioned preservation.
Description of drawings
(a)-(d) of Fig. 1 is the automatic gain control method key diagram of conventional art.
The (a) and (b) of Fig. 2 are automatic gain control method key diagrams of the present invention.
Fig. 3 is the signal flow graph of the automatic gain control method processing procedure of mobile phone of the present invention.
Embodiment
With reference to the accompanying drawings 2 and Fig. 3 describe the processing procedure of automatic gain control method of the present invention in detail.
Behind the open system power supply, confirm whether import effective received signal, import, then utilize the AGC compensating gain of having set to drive AGC if be judged as.(S1，S2)
Then, confirm whether continue to import above-mentioned effective received signal, import, then continue to drive AGC if be judged as; If be judged as no longer input, then preserve present AGC output gain value, stop AGC then and drive.(S3-S5)
Then, confirm whether re-enter effective received signal, import that then the AGC output gain with above-mentioned preservation drives AGC again if be judged as.(S6，S7)
In AGC driving as above, the useful signal that restarts to import is kept lagging behind (hysterisys), thereby can reduce power consumption to greatest extent, shorten the time of gain stabilizationization to greatest extent.
By said process, close the requirement that AGC drives if having when driving AGC, then finish AGC drive controlling process: if do not close requirement, then return above-mentioned the 3rd process (S3), continue to carry out repeatedly above-mentioned processing procedure.(S8)
As the above-mentioned detailed description of doing, the present invention has the effect that, promptly, if effectively received signal is cut off, preserve the AGC output gain value of this moment so, when re-entering useful signal, utilize the AGC gain of preserving to drive AGC again then, thereby can reduce power consumption to greatest extent, shorten to greatest extent at next reception valid interval and realize the synergy required time of stabilisation.
Claims (2)
1. the automatic gain control method of a mobile phone is characterized in that being made of following process:
The 1st process behind the power supply of open system, if imported effective received signal, then drives AGC with the compensating gain value of having set; The 2nd process when the input of above-mentioned effective received signal is cut off, is preserved present AGC output gain value, stops AGC then and drives; The 3rd process when re-entering effective received signal, drives AGC again with the AGC yield value of above-mentioned preservation.
2. the automatic gain control method of mobile phone according to claim 1 is characterized in that:
The 3rd process drives again to AGC, so that keep the hysteresis to the useful signal that re-enters.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020030035125A KR20040103196A (en) | 2003-05-31 | 2003-05-31 | Automatic gain controlling method in mobile phone |
| KR0035125/2003 | 2003-05-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1574992A true CN1574992A (en) | 2005-02-02 |
| CN1266974C CN1266974C (en) | 2006-07-26 |
Family
ID=34510779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101232366A Expired - Fee Related CN1266974C (en) | 2003-05-31 | 2003-12-18 | Automatic gain regulating method of mobile phone |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR20040103196A (en) |
| CN (1) | CN1266974C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101005656B (en) * | 2006-01-17 | 2013-04-24 | 联芯科技有限公司 | Sleep control method for mobile communication terminal |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100724947B1 (en) * | 2005-11-16 | 2007-06-04 | 삼성전자주식회사 | Automatic Gain Controller in Receiver for Communication System with Discontinuous Transmission and Method thereof |
-
2003
- 2003-05-31 KR KR1020030035125A patent/KR20040103196A/en not_active Application Discontinuation
- 2003-12-18 CN CNB2003101232366A patent/CN1266974C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101005656B (en) * | 2006-01-17 | 2013-04-24 | 联芯科技有限公司 | Sleep control method for mobile communication terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20040103196A (en) | 2004-12-08 |
| CN1266974C (en) | 2006-07-26 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |