CN101471737B - Method and device for regulating calibration transmission power - Google Patents
Method and device for regulating calibration transmission power Download PDFInfo
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- CN101471737B CN101471737B CN2007103041569A CN200710304156A CN101471737B CN 101471737 B CN101471737 B CN 101471737B CN 2007103041569 A CN2007103041569 A CN 2007103041569A CN 200710304156 A CN200710304156 A CN 200710304156A CN 101471737 B CN101471737 B CN 101471737B
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Abstract
The invention discloses a method for adjusting and calibrating transmission power. The method comprises the following steps: receiving noise signals within the interval when a calibrating antenna periodically transmits the calibrating signals; calculating an average noise power of all the noise signals and calculating a minimal calibration transmission power required for the normal work state of the calibrating antenna according to the average noise power; and adjusting the current calibration transmission power of the calibrating antenna according to the minimal calibration transmission power. Therefore, during the process of detecting the radio-frequency channel of a communication device, the method adjusts the calibration transmission power of the calibrating antenna in real time according to the environmental noise interference, thereby ensuring the transmission strength of the calibrated signal, allowing the transmission strength of the calibrated signal to meet the specified signal-to-noise ratio of system, improving the accuracy of the detection result, ensuring the coverage and the business quality of the system signal, and improving the user experience. The invention also discloses an adjusting device and a base station.
Description
Technical field
The present invention relates to the communications field, particularly a kind of method and device of adjusting calibration transmission power.
Background technology
In existing communication system, communicator adopts the periodic calibration mode that the radio-frequency channel that self is used for transmitting radio frequency signal is detected usually, in order to the channel quality of each radio-frequency channel of correct assessment.In testing process, boresight antenna on the communicator periodically transmits calibrating signal according to default fixing calibration power (being also referred to as calibration transmission power), work antenna on the communicator receives the calibrating signal that boresight antenna sends by each radio-frequency channel, and after this calibrating signal is processed, according to the testing result that obtains quality evaluation is carried out in the radio-frequency channel of transmitting this calibrating signal.
But, when adopting the periodic calibration mode that each radio-frequency channel is detected, if the stronger noise jamming of outside existence, then use default calibration transmission power to transmit system signal noise ratio (the Signal to Interfrence Ratio that calibrating signal can't satisfy regulation, SIR), thus cause the inaccurate of testing result.If according to inaccurate testing result quality evaluation is carried out in each radio-frequency channel, then can obtain wrong channel quality information, so that affect covering and the quality of service of system signal, and then affect user's experience.
Summary of the invention
The embodiment of the invention provides a kind of method and device of adjusting calibration transmission power, in order to when detecting the radio-frequency channel by calibrating signal, improves the accuracy of testing result.
The concrete technical scheme that the embodiment of the invention provides is as follows:
A kind of method of definite ambient noise comprises:
In multiaerial system, boresight antenna periodically sends in interval of calibrating signal at least by a work antenna reception noise signal; Wherein, described calibrating signal is for detection of the radio-frequency channel;
Obtain the average noise power of all noise signals of reception;
Wherein, according to formula
Obtain described average noise power, p is default recurrence Averagefactor,
Be the average noise power of all noise signals of within a upper interval, receiving,
For the noise power of the noise signal that within each time period of current interval, receives, according to formula
The noise power of the noise signal that acquisition received within each time period of described current interval, wherein, N is the length of burst,
Be K
aThe complex data sequence of the noise signal that receives on the root antenna,
Expression
The conjugate transpose sequence.
A kind of device for determining ambient noise comprises:
The work antenna is for the noise signal of passing through at least a work antenna reception external world in the interval that periodically sends calibrating signal at multiaerial system alignment antenna; Wherein, described calibrating signal is for detection of the radio-frequency channel;
The first processing unit is for the average noise power of all noise signals that obtain to receive; Wherein, according to formula
Obtain described average noise power, p is default recurrence Averagefactor,
Be the average noise power of all noise signals of within a upper interval, receiving,
For the noise power of the noise signal that within each time period of current interval, receives, according to formula
The noise power of the noise signal that acquisition received within each time period of described current interval, wherein, N is the length of burst,
Be K
aThe complex data sequence of the noise signal that receives on the root antenna,
Expression
The conjugate transpose sequence.
A kind of method of adjusting calibration transmission power comprises:
In multiaerial system, boresight antenna periodically sends in interval of calibrating signal at least by a work antenna reception noise signal, and obtains the average noise power of all noise signals of receiving; Wherein, described calibrating signal is for detection of the radio-frequency channel; According to formula
Obtain described average noise power, p is default recurrence Averagefactor,
Be the average noise power of all noise signals of within a upper interval, receiving,
For the noise power of the noise signal that within each time period of current interval, receives, according to formula
The noise power of the noise signal that acquisition received within each time period of described current interval, wherein, N is the length of burst,
Be K
aThe complex data sequence of the noise signal that receives on the root antenna,
Expression
The conjugate transpose sequence.
Obtain the minimum calibration transmission power that boresight antenna should use according to described average noise power and default system signal noise ratio, and according to this minimum calibration transmission power the presently used calibration transmission power of described boresight antenna is adjusted accordingly;
A kind of device for adjusting calibration transmission power comprises:
The work antenna is for the noise signal of passing through at least a work antenna reception external world in the interval that periodically sends calibrating signal at multiaerial system alignment antenna; Wherein, described calibrating signal is for detection of the radio-frequency channel;
The first processing unit is for the average noise power of all noise signals that obtain to receive; Wherein, according to formula
Obtain described average noise power, p is default recurrence Averagefactor,
Be the average noise power of all noise signals of within a upper interval, receiving,
For the noise power of the noise signal that within each time period of current interval, receives, according to formula
The noise power of the noise signal that acquisition received within each time period of described current interval, wherein, N is the length of burst,
Be K
aThe complex data sequence of the noise signal that receives on the root antenna,
Expression
The conjugate transpose sequence.
Memory cell is used for the maximum calibration transmission power that the default system signal noise ratio of preservation and described boresight antenna are supported;
The second processing unit, be used for obtaining the minimum calibration transmission power that boresight antenna should use according to described average noise power and default system signal noise ratio, and according to this minimum calibration transmission power the presently used calibration transmission power of described boresight antenna adjusted accordingly;
Notification unit is used for will adjusting the result and notifying described boresight antenna when described the second processing unit adjusts accordingly the calibration transmission power of the current use of described boresight antenna.
A kind of base station comprises:
Boresight antenna is for the calibrating signal that periodically sends to detect the radio-frequency channel;
The work antenna is for the noise signal of passing through at least a work antenna reception external world in the interval that periodically sends calibrating signal at boresight antenna;
The first processing unit is for the average noise power of all noise signals that obtain to receive.
A kind of base station comprises:
Boresight antenna is for the calibrating signal that periodically sends to detect the radio-frequency channel;
The work antenna is for the noise signal of passing through at least a work antenna reception external world in the interval that periodically sends calibrating signal at boresight antenna;
The first processing unit is for the average noise power of all noise signals that obtain to receive;
Memory cell is used for the maximum calibration transmission power that the default system signal noise ratio of preservation and described boresight antenna are supported;
The second processing unit, be used for obtaining the minimum calibration transmission power that boresight antenna should use according to described average noise power and default system signal noise ratio, and according to this minimum calibration transmission power the presently used calibration transmission power of described boresight antenna adjusted accordingly;
Notification unit is used for will adjusting the result and notifying described boresight antenna when described the second processing unit adjusts accordingly the calibration transmission power of the current use of described boresight antenna.
In the embodiment of the invention, in periodically sending interval of calibrating signal, boresight antenna receives noise signal, and the average noise power of all noise signals of acquisition reception, and obtain the minimum calibration transmission power that described boresight antenna is kept the required use of normal operating conditions according to this average noise power, and according to described minimum calibration transmission power the presently used calibration transmission power of described boresight antenna is adjusted accordingly.Like this, in the process that the radio-frequency channel of communicator is detected, just can adjust at any time according to the noise jamming in the external world calibration transmission power of boresight antenna, thereby guaranteed the intensity transmission of calibrating signal, make it satisfy the system signal noise ratio of regulation, and then improved the accuracy of testing result, and guaranteed covering and the quality of service of system signal, also promoted user's experience.
Description of drawings
Fig. 1 is communication system architectural framework figure in the embodiment of the invention;
Fig. 2 is base station functions structure chart in the embodiment of the invention;
Fig. 3 is the flow chart that calibrate to received signal the base station in the embodiment of the invention.
Embodiment
When the radio-frequency channel being detected carry out quality and estimate, in order to improve the accuracy of testing result, in the embodiment of the invention, in periodically sending interval of calibrating signal, boresight antenna receives noise signal; Obtain the average noise power of all noise signals of reception, and obtain the minimum calibration transmission power that described boresight antenna is kept the required use of normal operating conditions according to this average noise power; According to described minimum calibration transmission power the presently used calibration transmission power of described boresight antenna is adjusted accordingly.
Below in conjunction with accompanying drawing the preferred embodiment of the present invention is elaborated.
Consult shown in Figure 1ly, in communication system, have a plurality of base stations 10, present embodiment only is introduced as an example of a base station 10 example.Consult shown in Figure 2, base station 10 comprise boresight antenna 200 and adjusting device 201,
Boresight antenna 200 is used for the periodically calibration transmission power transmission according to default calibration transmission power or after adjusting for detection of the calibrating signal of radio-frequency channel.
Adjusting device 201 is used for receiving noise signal in boresight antenna 200 periodically sends interval of calibrating signal, and determines whether the calibration transmission power that boresight antenna 200 uses is adjusted according to the noise power of this noise signal.
As shown in Figure 2, adjusting device 201 comprises work antenna 2010, memory cell 2011, the first processing unit 2012, the second processing unit 2013 and notification unit 2014.
Work antenna 2010 is for receiving extraneous noise signal in the interval that periodically sends calibrating signal at boresight antenna 200;
Memory cell 2011 is used for preserving the maximum calibration transmission power that default system signal noise ratio and boresight antenna 200 are supported;
The first processing unit 2012 is for the average noise power of all noise signals that obtain to receive;
The second processing unit 2013, be used for obtaining the calibration transmission power that boresight antenna should use according to the average noise power that obtains and default system signal noise ratio, and judge whether that according to this calibration transmission power needs adjust accordingly boresight antenna 200 presently used calibration transmission power;
Notification unit 2014 is used for when determining to adjust boresight antenna 200 presently used calibration transmission power, and notice boresight antenna 200 uses the second processing unit 2013 by calculating the calibration transmission power that obtains in next cycle; And when carrying out decision operation at every turn, the second processing unit 2013 notifies the second processing unit 2013 with the calibration transmission power of boresight antenna 200 current uses.
Based on the said system framework, to consult shown in Figure 3ly, in the present embodiment, boresight antenna 200 and adjusting device 201 the detailed process that self radio-frequency channel detected of base station 10 by inside is as follows:
Step 300: adjusting device 201 receives extraneous noise signal in boresight antenna 200 carries out interval of periodic calibration.
In actual applications, when periodic calibration is carried out in base station 10, the signal that adjusting device 201 receives in predetermined period comprises calibrating signal and the extraneous noise signal that is sent by boresight antenna 200, and the signal that receives within interval only comprises extraneous noise signal.
Step 310: adjusting device 201 is by calculating the average noise power that obtains all noise signals of reception in interval.
Above-mentioned average noise power is expressed as:
Wherein, P is default recurrence Averagefactor,
The average noise power of all noise signals that within a upper interval, received for adjusting device 201, σ
n 2The noise power of the noise signal that within each time period of current interval, receives for adjusting device 201.In actual applications, adjusting device 201 will be divided into several time periods interval, and obtain first the noise power of the noise signal that receives in each time period, obtain again the average noise power of the noise signal that receives in whole interval according to noise power corresponding to each time period.Noise jamming in order to determine more accurately to exist in the environment can arrange a plurality of work antennas 2010 in order to receive noise signal in the adjusting device 201.In the present embodiment, with work antenna 2010 total number be called K
a, and wherein any one work antenna 2010 is called K
aRoot (k=1,2,3......K), so, the noise power of the noise signal that adjusting device 201 receives in a period of time is expressed as:
Wherein, N represents the length of burst,
e m (ka)K in the expression adjusting device 201
aThe complex data sequence of the noise signal that receives on the root antenna, (
e m (ka))
HExpression
e m (ka)Grip altogether transposed sequence.
Step 320: adjusting device 10 calculates the calibration transmission power of the minimum that boresight antenna should use for overcoming noise jamming according to the average noise power that obtains.(hereinafter referred to as power A).
In actual applications, use following formula rated output A:
(if all be expressed as linear value and adopt multiply operation)
(if all be expressed as log-domain dB/dBm and represent to adopt add operation)
Wherein, the value of system signal noise ratio is obtained by emulation, sets in advance in adjusting device 201, in order to the minimum signal to noise ratio that represents that calibrating signal can work.
Step 330: adjusting device 201 obtains boresight antenna 200 presently used calibration transmission power (hereinafter referred to as power B), and whether judges power A less than or equal to power B, if, then carry out step 340, otherwise, carry out step 350.
Step 340: adjusting device 201 finishes current flow process, makes boresight antenna 200 continue to use power B to send calibrating signal.
Step 350: adjusting device 201 is further judged the calibration transmission power (hereinafter referred to as power C) of the maximum whether power A supports greater than power B and less than or equal to boresight antenna 200, if then carry out step 360; Otherwise, carry out step 370.
Step 360: adjusting device 201 notice boresight antennas 200 are using power A to send calibrating signal in the cycle once.
Step 370: the calibration that adjusting device 201 is only preserved this locality not number of success adds 1 and do not do other any processing, makes boresight antenna 200 continue to use power B transmission calibrating signal in next cycle.
In the above-described embodiments, if adjusting device 201 determines that power A is greater than power C, then the not success of operation of calibration transmission power is this time adjusted in expression, so the calibration that this locality need to be preserved of adjusting device 201 not number of success add 1, and when this calibrates that number of success does not reach setting threshold to management station's report and alarm, the simultaneously success number of times zero clearing of calibrating.
On the other hand, in the above-described embodiments, after adjusting device 201 obtains the average noise power of all noise signals of reception in interval, also this average noise power directly can be reported to management system and do not carry out the adjustment of calibration transmission power, just its related data as ambient noise is preserved, accordingly, consult shown in Figure 2, also comprise in the adjusting device 201 and report unit 2015: the average noise power in each interval that is used for periodically the first processing unit 2012 being obtained reports to management system, perhaps, during average noise power within the first processing unit 2012 every acquisitions intervals, this average noise power is reported to management system.
In sum, in the embodiment of the invention, adjusting device 201 receives noise signal in boresight antenna periodically sends interval of calibrating signal, and the average noise power of all noise signals of acquisition reception, and obtain the minimum calibration transmission power that described boresight antenna is kept the required use of normal operating conditions according to this average noise power, and according to described minimum calibration transmission power the presently used calibration transmission power of described boresight antenna is adjusted accordingly.Like this, base station 10 is when detecting the radio-frequency channel of self, adjusting device 201 in the base station 10 just can be adjusted according to the noise jamming in the external world calibration transmission power of boresight antenna 200 at any time, thereby guaranteed the intensity transmission of calibrating signal, make it satisfy the system signal noise ratio of regulation, and then improved the accuracy of testing result, and guaranteed covering and the quality of service of system signal, also promoted user's experience.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (14)
1. the method for a definite ambient noise is characterized in that, comprising:
In multiaerial system, boresight antenna periodically sends in interval of calibrating signal at least by a work antenna reception noise signal; Wherein, described calibrating signal is for detection of the radio-frequency channel;
Obtain the average noise power of all noise signals of reception;
Wherein, according to formula
Obtain described average noise power, p is default recurrence Averagefactor,
Be the average noise power of all noise signals of within a upper interval, receiving,
For the noise power of the noise signal that within each time period of current interval, receives, according to formula
The noise power of the noise signal that acquisition received within each time period of described current interval, wherein, N is the length of burst,
Be K
aThe complex data sequence of the noise signal that receives on the root antenna,
Expression
The conjugate transpose sequence.
2. the method for claim 1 is characterized in that, the average noise power in each interval that will obtain according to predetermined period reports to management system; Perhaps, during average noise power within every acquisition interval, this average noise power is reported to management system.
3. a device that is used for determining ambient noise is characterized in that, comprising:
The work antenna is for the noise signal of passing through at least a work antenna reception external world in the interval that periodically sends calibrating signal at multiaerial system alignment antenna; Wherein, described calibrating signal is for detection of the radio-frequency channel;
The first processing unit is for the average noise power of all noise signals that obtain to receive; Wherein, according to formula
Obtain described average noise power, p is default recurrence Averagefactor,
Be the average noise power of all noise signals of within a upper interval, receiving,
For the noise power of the noise signal that within each time period of current interval, receives, according to formula
The noise power of the noise signal that acquisition received within each time period of described current interval, wherein, N is the length of burst,
Be K
aThe complex data sequence of the noise signal that receives on the root antenna,
Expression
The conjugate transpose sequence.
4. device as claimed in claim 3 is characterized in that, also comprises:
Report the unit, average noise power in each interval that is used for periodically described the first processing unit being obtained reports to management system, perhaps, during average noise power within the every acquisition of described the first processing unit interval, this average noise power is reported to management system.
5. a method of adjusting calibration transmission power is characterized in that, comprising:
Obtain in multiaerial system alignment antenna periodically sends interval of calibrating signal at least average noise power by all noise signals of a work antenna reception according to method as claimed in claim 1 or 2;
Obtain the minimum calibration transmission power that boresight antenna should use according to described average noise power and default system signal noise ratio, and according to this minimum calibration transmission power the presently used calibration transmission power of described boresight antenna is adjusted accordingly.
6. method as claimed in claim 5 is characterized in that, obtain described average noise power after, obtain described minimum calibration transmission power according to this average noise power and default system signal noise ratio.
7. method as claimed in claim 6, it is characterized in that, when adjusting the calibration transmission power of the current use of described boresight antenna according to described minimum calibration transmission power, if during the maximum calibration transmission power that described minimum calibration transmission power is supported greater than the calibration transmission power of the current use of described boresight antenna and less than or equal to described boresight antenna, notify described boresight antenna in next cycle, to use described minimum calibration transmission power transmission calibrating signal.
8. method as claimed in claim 6, it is characterized in that, when adjusting the calibration transmission power of the current use of described boresight antenna according to described minimum calibration transmission power, if the maximum calibration transmission power that described minimum calibration transmission power is supported greater than described boresight antenna, the calibration that then will record not number of success adds 1, and when this calibrates that number of success does not reach setting threshold, report to the police to management system.
9. a device that is used for adjusting calibration transmission power is characterized in that, comprising:
Device as claimed in claim 3, for the noise signal of passing through at least a work antenna reception external world in the interval that periodically sends calibrating signal at multiaerial system alignment antenna, and the average noise power of all noise signals of acquisition reception;
Memory cell is used for the maximum calibration transmission power that the default system signal noise ratio of preservation and described boresight antenna are supported;
The second processing unit, be used for obtaining the minimum calibration transmission power that boresight antenna should use according to described average noise power and default system signal noise ratio, and according to this minimum calibration transmission power the presently used calibration transmission power of described boresight antenna adjusted accordingly;
Notification unit is used for will adjusting the result and notifying described boresight antenna when described the second processing unit adjusts accordingly the calibration transmission power of the current use of described boresight antenna.
10. device as claimed in claim 9 is characterized in that, after described the second processing unit obtains described average noise power, obtains described minimum calibration transmission power according to this noise power and default system signal noise ratio.
11. device as claimed in claim 10, it is characterized in that, if described the second processing unit is determined described minimum calibration transmission power greater than the calibration transmission power of the current use of described boresight antenna and the maximum calibration transmission power supported less than or equal to described boresight antenna, then described notification unit notifies described boresight antenna to use described minimum calibration transmission power transmission calibrating signal in next cycle.
12. device as claimed in claim 10, it is characterized in that, if described the second processing unit is determined the maximum calibration transmission power that described minimum calibration transmission power is supported greater than described boresight antenna, then the calibration that this locality is preserved of this second processing unit not number of success add 1, and when this calibrates that number of success does not reach setting threshold, report to the police to management system by described notification unit.
13. a base station comprises boresight antenna, it is characterized in that, also comprises device as claimed in claim 3, wherein:
Described boresight antenna is for the calibrating signal that periodically sends to detect the radio-frequency channel;
Device as claimed in claim 3 is for passing through at least a work antenna reception noise signal in the interval that periodically sends calibrating signal at described boresight antenna, and the average noise power of all noise signals of acquisition reception, so that this average noise power is reported to management system.
14. a base station comprises boresight antenna, it is characterized in that, also comprises device as claimed in claim 9, wherein:
Described boresight antenna is for the calibrating signal that periodically sends to detect the radio-frequency channel; Device as claimed in claim 9 is for passing through at least a work antenna reception noise signal in the interval that periodically sends calibrating signal at described boresight antenna, and the average noise power of all noise signals of acquisition reception, and obtain the minimum calibration transmission power that described boresight antenna is kept the required use of normal operating conditions according to this average noise power, and according to described minimum calibration transmission power the presently used calibration transmission power of described boresight antenna is adjusted accordingly.
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| CN105510852A (en) * | 2015-05-28 | 2016-04-20 | 中国电子科技集团公司第四十一研究所 | Output power calibration method of radio frequency excitation source based on linear interpolation |
| CN105573397B (en) * | 2016-02-26 | 2018-11-09 | 联想(北京)有限公司 | A kind of electric motor starting method and electronic equipment |
| CN109274468B (en) * | 2018-11-23 | 2021-04-16 | 中国电子科技集团公司第三十八研究所 | Method and system for testing channel IQ automatic correction function |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1422010A (en) * | 2001-11-05 | 2003-06-04 | 株式会社日立制作所 | Transmitting power control method for radio communication system |
| CN1823485A (en) * | 2003-05-14 | 2006-08-23 | 高通股份有限公司 | Interference and noise estimation in an OFDM system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1422010A (en) * | 2001-11-05 | 2003-06-04 | 株式会社日立制作所 | Transmitting power control method for radio communication system |
| CN1823485A (en) * | 2003-05-14 | 2006-08-23 | 高通股份有限公司 | Interference and noise estimation in an OFDM system |
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