CN106341356A - Downlink carrier flatness compensation method and device - Google Patents

Downlink carrier flatness compensation method and device Download PDF

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Publication number
CN106341356A
CN106341356A CN201510407623.5A CN201510407623A CN106341356A CN 106341356 A CN106341356 A CN 106341356A CN 201510407623 A CN201510407623 A CN 201510407623A CN 106341356 A CN106341356 A CN 106341356A
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carrier wave
flatness
carrier
power
descending
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CN106341356B (en
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刘兴旺
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ZTE Corp
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ZTE Corp
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Priority to CN201510407623.5A priority Critical patent/CN106341356B/en
Priority to PCT/CN2016/076994 priority patent/WO2016177161A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks

Abstract

The invention provides a downlink carrier flatness compensation method and device. The method comprises the steps that the coarse adjustment compensation factor of each carrier in a number of downlink carriers is determined according to the flatness characteristic of a radio frequency device, wherein the flatness characteristic comprises the mapping relationship among the operating frequency, the temperature and the flatness of the radio frequency device; the fine adjustment compensation factor of each carrier is determined according to the downlink baseband power of each carrier and the forward power of each carrier before entering a circulator; weighting calculating is carried out on the coarse adjustment compensation factor of each carrier and the fine adjustment compensation factor of each carrier, so as to acquire the flatness compensation value of each carrier; and according to the flatness compensation value, flatness compensation is carried out on each carrier. According to the invention, the problem of poor downlink carrier flatness of a radio frequency remote unit (RRU) is solved, and the flatness of the RRU downlink carrier is improved.

Description

Descending carrier flatness compensation method and device
Technical field
The present invention relates to the communications field, in particular to a kind of descending carrier flatness compensation method and device.
Background technology
Base station is the indispensable ingredient of cordless communication network, and current base station is generally by base band resource pool (base Band unit, referred to as bbu) and Remote Radio Unit (radio remote unit, referred to as rru) constitute, Meanwhile, the form of rru itself is also developing towards wide-band or ultra-wideband direction, to meet client to rru Higher adaptive requirement is proposed.
The present inventor finds in research process, the rru after wideband, due to band support width, in frequency range Intercarrier frequency interval is also increasing therewith, and between downlink carrier, flatness problem will increasingly outstanding behaviours be out.
For the problem of correlation technique rru descending carrier flatness difference, effective solution is not yet proposed at present.
Content of the invention
The invention provides a kind of descending carrier flatness compensation method and device, at least to solve rru in correlation technique The problem of descending carrier flatness difference.
According to an aspect of the invention, it is provided a kind of descending carrier flatness compensation method, comprising: according to radio-frequency (RF) device The flatness characteristic of part, determines the coarse adjustment compensating factor of each carrier wave in multiple descending carriers, wherein, described flatness characteristic Including: the mapping relations of the operating frequency of described radio-frequency devices, temperature and described flatness；According under described each carrier wave Row base band power enters the forward power before circulator with described each carrier wave, determines the fine tuning compensating factor of described each carrier wave； The described fine tuning compensating factor of the described coarse adjustment compensating factor to described each carrier wave and described each carrier wave is weighted, and obtains Flatness offset to described each carrier wave；According to described flatness offset, respectively flatness is carried out to described each carrier wave Compensate.
Preferably, the flatness characteristic according to radio-frequency devices, determines the coarse adjustment compensating factor of each carrier wave in multiple descending carriers Including: according to the flatness characteristic of described radio-frequency devices, generate flatness and compensate table；Work frequency according to described each carrier wave Rate and Current Temperatures, determine the flat angle value of described each carrier wave in described flatness compensation table；According to described each carrier wave Described flat angle value and described each carrier wave descending actual power, calculate described coarse adjustment compensating factor.
Preferably, in the plurality of descending carrier n-th carrier wave described coarse adjustment compensating factor anCalculated according to following equation Draw:
a n = σ i = 1 n c i ( 1 + σ i = 2 n 1 / f i ) * c n f n ;
Wherein, cn represents the descending actual power of n-th carrier wave in the plurality of descending carrier, and fn represents the plurality of The flat angle value of n-th carrier wave in descending carrier.
Preferably, the downgoing baseband power according to described each carrier wave and described each carrier wave enter the forward power before circulator, Determine that the fine tuning compensating factor of described each carrier wave includes: obtain the described downgoing baseband power of described each carrier wave and described each load The forward detection power of ripple, wherein, described forward detection power is by feedback link, described forward power to be detected Obtain；Described downgoing baseband power according to described each carrier wave and the described forward detection power of described each carrier wave, calculate The described fine tuning compensating factor of described each carrier wave.
Preferably, in the plurality of descending carrier n-th carrier wave described fine tuning compensating factor bnCalculated according to following equation Draw:
b n = p n * σ 1 = 1 n d i d n * σ i = 1 n p i ;
Wherein, dn represents the downgoing baseband power of n-th carrier wave in the plurality of descending carrier, and pn represents the plurality of The forward detection power of n-th carrier wave in descending carrier.
Preferably, according to described flatness offset, respectively described each carrier wave is carried out with flatness and compensates inclusion: judge institute Whether the described flatness offset stating each carrier wave is in pre-determined threshold；In the described flatness determining described each carrier wave In the case that offset is in described pre-determined threshold, the described flatness offset according to described each carrier wave is to described each load Ripple carries out flatness compensation.
Preferably, in the case that the described flatness offset determining described each carrier wave exceeds described pre-determined threshold, institute Method of stating also includes: reports abnormality alarming.
According to another aspect of the present invention, additionally provide a kind of descending carrier flatness compensation device, comprising: first is true Cover half block, for the flatness characteristic according to radio-frequency devices, determines the coarse adjustment compensating factor of each carrier wave in multiple descending carriers, Wherein, described flatness characteristic includes: the operating frequency of described radio-frequency devices, the mapping relations of temperature and described flatness； Second determining module, before before the downgoing baseband power according to described each carrier wave and described each carrier wave entrance circulator To power, determine the fine tuning compensating factor of described each carrier wave；Computing module, for the described coarse adjustment benefit to described each carrier wave Repay the factor and the described fine tuning compensating factor of described each carrier wave is weighted, the flatness obtaining described each carrier wave compensates Value；Compensating module, for according to described flatness offset, carrying out flatness compensation to described each carrier wave respectively.
Preferably, the first determining module includes: signal generating unit, for the flatness characteristic according to described radio-frequency devices, raw Flatness is become to compensate table；Determining unit, for the operating frequency according to described each carrier wave and Current Temperatures, described flat The flat angle value of described each carrier wave is determined in smooth degree compensation table；First computing unit, for according to described each carrier wave Flat angle value and the descending actual power of described each carrier wave, calculate described coarse adjustment compensating factor.
Preferably, the second determining module includes: acquiring unit, for obtaining the described downgoing baseband power of described each carrier wave With the forward detection power of described each carrier wave, wherein, described forward detection power is to described forward direction work(by feedback link Rate carries out detecting and obtains；Second computing unit, for the described downgoing baseband power according to described each carrier wave and described each The described forward detection power of carrier wave, calculates the described fine tuning compensating factor of described each carrier wave.
By the present invention, using the flatness characteristic according to radio-frequency devices, determine the coarse adjustment of each carrier wave in multiple descending carriers Compensating factor, wherein, flatness characteristic includes: the operating frequency of radio-frequency devices, the mapping relations of temperature and flatness； Downgoing baseband power according to each carrier wave enters the forward power before circulator with each carrier wave, determines that the fine tuning of each carrier wave is mended Repay the factor；The fine tuning compensating factor of the coarse adjustment compensating factor to each carrier wave and each carrier wave is weighted, and obtains each carrier wave Flatness offset；According to flatness offset, respectively each carrier wave is carried out with the mode of flatness compensation, solves The problem of rru descending carrier flatness difference, improves the flatness of rru descending carrier.
Brief description
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, the present invention Schematic description and description be used for explaining the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of descending carrier flatness compensation method according to embodiments of the present invention；
Fig. 2 is the structured flowchart of descending carrier flatness compensation device according to embodiments of the present invention；
Fig. 3 is the preferred structure block diagram one of descending carrier flatness compensation device according to embodiments of the present invention；
Fig. 4 is the preferred structure block diagram two of descending carrier flatness compensation device according to embodiments of the present invention；
Fig. 5 is the flow process of flatness compensation method between wideband rru downlink carrier according to the preferred embodiment of the invention Figure；
Fig. 6 is rru down link structure block diagram according to the preferred embodiment of the invention；
Fig. 7 is the flow chart of wideband rru intercarrier flatness compensation method according to the preferred embodiment of the invention.
Specific embodiment
To describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that in the feelings do not conflicted Under condition, the embodiment in the application and the feature in embodiment can be mutually combined.
It should be noted that term " first " in description and claims of this specification and above-mentioned accompanying drawing, " second " Etc. being for distinguishing similar object, without for describing specific order or precedence.
Provide a kind of descending carrier flatness compensation method in the present embodiment, under Fig. 1 is according to embodiments of the present invention The flow chart of row carrier wave flatness compensation method, as shown in figure 1, this flow process comprises the steps:
Step s102, according to the flatness characteristic of radio-frequency devices, determines that the coarse adjustment of each carrier wave in multiple descending carriers compensates The factor, wherein, flatness characteristic includes: the operating frequency of radio-frequency devices, the mapping relations of temperature and flatness；
Step s104, the downgoing baseband power according to each carrier wave enters the forward power before circulator with each carrier wave, really The fine tuning compensating factor of fixed each carrier wave；
Step s106, the coarse adjustment compensating factor to each carrier wave and the fine tuning compensating factor of each carrier wave are weighted, and obtain Flatness offset to each carrier wave；
Step s108, according to flatness offset, carries out flatness compensation to each carrier wave respectively.
By above-mentioned steps, it is scanned determining the coarse adjustment compensating factor of each carrier wave by radio-frequency devices outer to ring, by right In downgoing baseband power and ring forward power carry out detect determine each carrier wave fine tuning compensating factor, then to both compensate because Son is calculated, and the flatness offset obtaining each carrier wave carries out flatness compensation to each carrier wave.It can be seen that, using above-mentioned step Suddenly, solve the problems, such as that rru descending carrier flatness is poor, improve the flatness of rru descending carrier.
Preferably, above-mentioned steps can apply to the downlink of wideband rru, additionally, said method can also be applied In link higher to system flatness requirement or that hardware designs are not enough.
Preferably due to the outer link of ring does not possess feedback channel, in above-mentioned steps s102, can be according to radio-frequency devices Flatness characteristic, determine the coarse adjustment compensating factor of each carrier wave in multiple descending carriers.For example, flat according to radio-frequency devices Smooth degree characteristic, generates flatness and compensates table；Operating frequency according to each carrier wave and Current Temperatures, compensate table in flatness The middle flat angle value determining each carrier wave；Flat angle value according to each carrier wave and the descending actual power of each carrier wave, calculate coarse adjustment Compensating factor.Alternatively, with 10k as stepping, by audiofrequency spectrometer, the flatness characteristic of radio-frequency devices is scanned, obtains Radio-frequency devices full band scan frequency and each carrier wave flatness mapping table, and by mapping table and radio-frequency devices Nominal carrier as radio-frequency devices characteristic parameter generate flatness compensate table, the operating frequency according to each carrier wave and work as Front temperature lookup flatness compensates table, obtains the flat angle value of each carrier wave, by determining the flat angle value of each carrier wave and each load The relation of the descending actual power of ripple, obtains coarse adjustment compensating factor.
Preferably, in multiple descending carriers n-th carrier wave coarse adjustment compensating factor anCan be calculated according to following equation:
a n = σ i = 1 n c i ( 1 + σ i = 2 n 1 / f i ) * c n f n ;
Wherein, cn represents the descending actual power of n-th carrier wave in multiple descending carriers, and fn represents multiple descending carriers In n-th carrier wave flat angle value.
Alternatively, in above-mentioned multiple descending carrier n-th carrier wave coarse adjustment compensating factor anComputing formula, can by under Row derivation draws:
Keep constant by descending actual general power after compensating through coarse adjustment flatness, that is,
c1+c2+....+cn=a1c1+a2c2+...+ancn,
And, the ratio of each carrier power after compensating through coarse adjustment flatness for the descending actual power of each carrier wave and each carrier wave The ratio of flat angle value is inversely proportional to, that is,Understand
a 1 c 1 = c 1 + c 2 + .... + c n 1 + f 1 f 2 + ... + f 1 f n
Then have
a 1 = c 1 + c 2 + .... + c n ( 1 + f 1 f 2 + ... + f 1 f n ) * c 1
Further according to a n c n a 1 c 1 = f 1 f n With a 1 = c 1 + c 2 + .... + c n ( 1 + f 1 f 2 + ... + f 1 f n ) * c 1 Understand
a n = f 1 f n * ( c 1 + c 2 + .... + c n ) ( 1 + f 1 f 2 + ... + f 1 f n ) * c n = σ i = 1 n c i ( 1 + σ i = 2 n 1 / f i ) * c n f n .
Preferably due to the link before circulator has feedback channel, in above-mentioned steps s104, each carrier wave enters Forward power before circulator can by feedback channel carry out detection obtain, the downgoing baseband power according to each carrier wave with Each carrier wave enters the forward power before circulator, determines the fine tuning compensating factor of each carrier wave, for example, obtains each carrier wave The forward detection power of downgoing baseband power and each carrier wave, wherein, forward detection power is to work(by feedback link to front Rate carries out detecting and obtains；Downgoing baseband power according to each carrier wave and the forward detection power of each carrier wave, calculate each carrier wave Fine tuning compensating factor.
Preferably, in multiple descending carriers n-th carrier wave fine tuning compensating factor bnCan be calculated according to following equation:
b n = p n * σ 1 = 1 n d i d n * σ i = 1 n p i ;
Wherein, dn represents the downgoing baseband power of n-th carrier wave in multiple descending carriers, and pn represents multiple descending carriers In n-th carrier wave forward detection power.
Alternatively, in above-mentioned multiple descending carrier n-th carrier wave fine tuning compensating factor bnComputing formula, can by under Row derivation draws:
Keep constant by total downgoing baseband power after compensating through fine tuning flatness, that is,
d1+d2+....+dn=b1d1+b2d2+...+bndn
And, the ratio of the downgoing baseband power of each carrier wave each carrier power after compensating through fine tuning flatness and each load The ratio of the forward detection power of ripple is directly proportional and compares, i.e. (b1d1)/(bndn)=(p1/pn) it is known that
b 1 d 1 = d 1 + d 2 + .... + d n 1 + p 2 p 1 + ... + p n p 1
Then haveFurther according to (b1d1)/(bndn)=(p1/pn), can obtain
b n = p n * σ 1 = 1 n d i d n * σ i = 1 n p i .
Preferably, in above-mentioned steps s108, can be default by judging whether the flatness offset of each carrier wave is in In thresholding；In the case that the flatness offset determining each carrier wave is in pre-determined threshold, flat according to each carrier wave The mode that degree offset carries out flatness compensation to each carrier wave compensates to flatness.
Preferably, in the case that the flatness offset determining each carrier wave exceeds pre-determined threshold, abnormal announcement can be reported Alert.
Through the above description of the embodiments, those skilled in the art can be understood that according to above-described embodiment Method can realize by the mode of software plus necessary general hardware platform naturally it is also possible to pass through hardware, but a lot In the case of the former is more preferably embodiment.Based on such understanding, technical scheme is substantially in other words to existing Have what technology contributed partly can embody in the form of software product, this computer software product is stored in one In storage medium (as rom/ram, magnetic disc, CD), including some instructions with so that a station terminal equipment (can To be mobile phone, computer, server, or the network equipment etc.) method described in execution each embodiment of the present invention.
Additionally provide a kind of descending carrier flatness compensation device in the present embodiment, this device is used for realizing above-described embodiment And preferred implementation, carried out repeating no more of explanation.As used below, term " module " can be real The existing software of predetermined function and/or the combination of hardware.Although the device described by following examples is preferably come real with software Existing, but hardware, or the realization of the combination of software and hardware is also may and to be contemplated.
Fig. 2 is the structured flowchart of descending carrier flatness compensation device according to embodiments of the present invention, as shown in Fig. 2 should Device includes；First determining module 22, the second determining module 24, computing module 26 and compensating module 28, wherein, the One determining module 22, for the flatness characteristic according to radio-frequency devices, determines that the coarse adjustment of each carrier wave in multiple descending carriers is mended Repay the factor, wherein, flatness characteristic includes: the mapping relations of the operating frequency of radio-frequency devices, temperature and flatness；The Two determining modules 24, coupled to the first determining module 22, enter for the downgoing baseband power according to each carrier wave and each carrier wave Enter the forward power before circulator, determine the fine tuning compensating factor of each carrier wave；Computing module 26, coupled to the second determination Module 24, for being weighted to the coarse adjustment compensating factor of each carrier wave and the fine tuning compensating factor of each carrier wave, obtains each The flatness offset of carrier wave；Compensating module 28, coupled to computing module 26, for according to flatness offset, dividing Other flatness compensation is carried out to each carrier wave.
Fig. 3 is the preferred structure block diagram one of descending carrier flatness compensation device according to embodiments of the present invention, as Fig. 3 institute Show it is preferable that above-mentioned first determining module 22 includes: signal generating unit 32, determining unit 34 and the first computing unit 36, wherein, signal generating unit 32, for the flatness characteristic according to radio-frequency devices, generate flatness and compensate table；Determine single Unit 34, coupled to signal generating unit 32, for the operating frequency according to each carrier wave and Current Temperatures, compensates in flatness The flat angle value of each carrier wave is determined in table；First computing unit 36, coupled to determining unit 34, for according to each carrier wave Flat angle value and each carrier wave descending actual power, calculate coarse adjustment compensating factor.
Preferably, in multiple descending carriers in above-mentioned first computing unit 36 n-th carrier wave coarse adjustment compensating factor anRoot Calculate according to following equation:
a n = σ i = 1 n c i ( 1 + σ i = 2 n 1 / f i ) * c n f n ;
Wherein, cn represents the descending actual power of n-th carrier wave in multiple descending carriers, and fn represents multiple descending carriers In n-th carrier wave flat angle value.
Fig. 4 is the preferred structure block diagram two of descending carrier flatness compensation device according to embodiments of the present invention, as Fig. 4 institute Show it is preferable that above-mentioned second determining module 24 includes: acquiring unit 42 and the second computing unit 44, wherein, obtain Unit 42, for obtaining the downgoing baseband power of each carrier wave and the forward detection power of each carrier wave, wherein, forward detection work( Rate carries out detecting to forward power by feedback link and obtains；Second computing unit 44, coupled to acquiring unit 42, For the forward detection power of the downgoing baseband power according to each carrier wave and each carrier wave, calculate the fine tuning compensating factor of each carrier wave.
Preferably, in multiple descending carriers in above-mentioned second computing unit 44 n-th carrier wave fine tuning compensating factor bnRoot Calculate according to following equation:
b n = p n * σ 1 = 1 n d i d n * σ i = 1 n p i ;
Wherein, dn represents the downgoing baseband power of n-th carrier wave in multiple descending carriers, and pn represents multiple descending carriers In n-th carrier wave forward detection power.
Preferably, above-mentioned compensating module 28 is used for judging whether the flatness offset of each carrier wave is in pre-determined threshold； In the case that the flatness offset determining each carrier wave is in pre-determined threshold, according to the flatness offset of each carrier wave Flatness compensation is carried out to each carrier wave.
Preferably, said apparatus also include: reporting module, pre- for exceeding in the flatness offset determining each carrier wave In the case of gating limit, report abnormality alarming.
It should be noted that above-mentioned modules can be by software or hardware to realize, for the latter, Ke Yitong Cross in the following manner to realize, but not limited to this: above-mentioned module is respectively positioned in same processor；Or, above-mentioned module position respectively In multiple processors.
Embodiments of the invention additionally provide a kind of software, and this software is used for executing in above-described embodiment and preferred implementation The technical scheme of description.
Embodiments of the invention additionally provide a kind of storage medium.In the present embodiment, above-mentioned storage medium can be set For storage for executing the program code of following steps:
S200, according to the flatness characteristic of radio-frequency devices, determines the coarse adjustment compensating factor of each carrier wave in multiple descending carriers, Wherein, flatness characteristic includes: the operating frequency of radio-frequency devices, the mapping relations of temperature and flatness；
S400, the downgoing baseband power according to each carrier wave enters the forward power before circulator with each carrier wave, determines each load The fine tuning compensating factor of ripple；
S600, the coarse adjustment compensating factor to each carrier wave and the fine tuning compensating factor of each carrier wave are weighted, and obtain each load The flatness offset of ripple；
S800, according to flatness offset, carries out flatness compensation to each carrier wave respectively.
Alternatively, storage medium is also configured to store for executing the program code of following steps:
S220, according to the flatness characteristic of radio-frequency devices, generates flatness and compensates table；
S240, the operating frequency according to each carrier wave and Current Temperatures, determine the flat of each carrier wave in flatness compensation table Angle value；
S260, the flat angle value according to each carrier wave and the descending actual power of each carrier wave, calculate coarse adjustment compensating factor.
Alternatively, storage medium is also configured to store for executing the program code of following steps:
S262, the coarse adjustment compensating factor a of n-th carrier wave in multiple descending carriersnCalculated according to following equation:
a n = σ i = 1 n c i ( 1 + σ i = 2 n 1 / f i ) * c n f n ;
Wherein, cn represents the descending actual power of n-th carrier wave in multiple descending carriers, and fn represents multiple descending carriers In n-th carrier wave flat angle value.
Alternatively, storage medium is also configured to store for executing the program code of following steps:
S420, obtains the downgoing baseband power of each carrier wave and the forward detection power of each carrier wave, wherein, forward detection power By feedback link, forward power is carried out detecting and obtain；
S440, the downgoing baseband power according to each carrier wave and the forward detection power of each carrier wave, the fine tuning calculating each carrier wave is mended Repay the factor.
Alternatively, storage medium is also configured to store for executing the program code of following steps:
S442, the fine tuning compensating factor b of n-th carrier wave in multiple descending carriersnCalculated according to following equation:
b n = p n * σ 1 = 1 n d i d n * σ i = 1 n p i ;
Wherein, dn represents the downgoing baseband power of n-th carrier wave in multiple descending carriers, and pn represents multiple descending carriers In n-th carrier wave forward detection power.
Alternatively, storage medium is also configured to store for executing the program code of following steps:
S820, judges whether the flatness offset of each carrier wave is in pre-determined threshold；
S840, determine each carrier wave flatness offset be in pre-determined threshold in the case of, flat according to each carrier wave Degree offset carries out flatness compensation to each carrier wave.
Alternatively, storage medium is also configured to store for executing the program code of following steps:
S900, reports abnormality alarming.
Alternatively, in the present embodiment, above-mentioned storage medium can include but is not limited to: u disk, read only memory (rom, Read-only memory), random access memory (ram, random access memory), portable hard drive, Magnetic disc or CD etc. are various can be with the medium of store program codes.
In order that the description of the embodiment of the present invention is clearer, it is described with reference to preferred embodiment and illustrates.
The preferred embodiment of the present invention provides flatness compensation method and device between a kind of wideband rru downlink carrier, Can apply to cellular radio base station radio-frequency performance control technology, there is provided rru carrier power control method achieves The lifting of rru systematic function.
Flatness compensation method between a kind of wideband rru downlink carrier that the preferred embodiment of the present invention proposes, by dividing The enforcement of carrier compensation technology, optimizes wideband rru intercarrier flatness characteristic, the overall rru systematic function of lifting.
Flatness compensation method between a kind of wideband rru downlink carrier that the preferred embodiment of the present invention provides, including such as Lower step:
Step 102, the offline static compensation of downlink coarse adjustment flatness calculates.
Step 104, the online dynamic compensation of downlink fine tuning flatness calculates.
Step 106, the judgement of pre-adjustment flat angle value is warned with abnormal.
Improve the flatness of down going channel intercarrier by above-mentioned steps, and complete the alarm function of abnormal conditions, lifting The radio-frequency performance of system and the self-test capability of unit exception.
Below in conjunction with the accompanying drawings the preferred embodiment of the present invention is illustrated.
Fig. 5 is the flow process of flatness compensation method between wideband rru downlink carrier according to the preferred embodiment of the invention Figure, as shown in figure 5, this flow process comprises the steps:
Step s502, the offline static compensation of downlink coarse adjustment flatness calculates:
Fig. 6 is rru down link structure block diagram according to the preferred embodiment of the invention, as shown in fig. 6, rru is annular Feedback channel is not possessed on the data link after device, the difference of the flatness of intercarrier depends on this section of link wider Radio-frequency devices characteristic in spectral range, therefore passes through to use in advance the flatness characterisitic parameter of audiofrequency spectrometer sampler (suitable In above-mentioned flatness characteristic), generate offline compensate table (being equivalent to above-mentioned flatness compensation table), treat to set up on rru little After area, by reading the offline compensation table that previously generates, according to the descending actual power size of each carrier wave and current Temperature, with flatness backoff algorithm, can obtain the coarse adjustment compensating factor of each carrier wave.
Preferably, the collection of the outer link flatness characterisitic parameter of ring, can for the main devices on this section of link (for example Cavity body filter) it is acquired.
Preferably, the offline table that compensates can adopt common text files, or the storage format of other forms is stored in rru In the memorizer that non-power-failure is lost.
Preferably, can be so that offline compensation table to be stored in the flash memory (flash) of rru using plain text mode.
Preferably, characterisitic parameter sampling stepping can be selected according to the characteristic of practical devices.Frequency area between sampled point Can be fitted using fitting algorithm, to ensure all to have sampled data in full bandwidth it is preferable that frequency property fitting Linear fit algorithm can be adopted.
Preferably, flatness backoff algorithm can compensate calculating using the formula described in the specific embodiment of the invention, Or adopt other backoff algorithms.
Step s504, the online dynamic compensation of downlink fine tuning flatness calculates:
As shown in fig. 6, the data link before circulator in rru downlink has feedback channel, can be by anti- The size of the load sharing wave power of feedback Air conduct measurement, knows the ratio of the forward detection power of each sub-carrier, simultaneously under foundation The descending actual power of row carrier wave, according to flatness algorithm, obtains the fine tuning compensating factor of each carrier wave.
Preferably, the forward detection power in each carrier wave downgoing baseband power and corresponding moment, can be carried entirely by autonomous data Wide frequency sweep obtains it is also possible to pass through the actually detected acquisition of online data.
Preferably, carrier wave downgoing baseband power can calculate indirect gain by cell power it is also possible to pass through real-time detection The power direct access of the fixing time slot of bottom.
Preferably, carrier wave fine tuning compensation process can be performed a plurality of times according to concrete system performance, to provide the real-time of system balance Property, or carry out single execution.
Preferably, flatness backoff algorithm can be calculated using the formula described in the specific embodiment of the invention or use it His backoff algorithm.
Step s506, the judgement of pre-adjustment flat angle value is warned with abnormal:
According to coarse adjustment compensating factor and fine tuning compensating factor, two stage compensating factors are carried out with strategy weighting, for example, calculates Coarse adjustment compensating factor and product (the i.e. a of fine tuning compensating factorn*bn) determine each carrier wave of downlink according to weighted results Flatness adjustment desired value (being equivalent to above-mentioned flatness offset), judges to adjust whether desired value is in rational thresholding In (being equivalent to above-mentioned pre-determined threshold), if be in the range of reasonable threshold, according to expected adjusted value in intermediate frequency logic Part is adjusted, if exceeding rational thresholding, reports abnormality alarming.
Preferably it is contemplated that thresholding can obtain it is also possible to artificial according to design parameter by way of reading overall permanence table Agreement.
Preferably, flatness adjustment desired value is adjusted in intermediate frequency logical gate, can be by being integrated in dpd module Inside is carried out, it would however also be possible to employ the mode increasing adjustment unit before dpd module is carried out.
Preferably, the preferred embodiment of the present invention is the compensation of the descending carrier flatness for wideband rru it is also possible to answer If for higher to system flatness performance requirement, or exist in the not enough link of hardware designs.
Fig. 7 is the flow chart of wideband rru intercarrier flatness compensation method according to the preferred embodiment of the invention, such as schemes Shown in 7, this flow process comprises the steps:
Step s702, in the full frequency band that wideband rru ring exocoel fluid filter (being equivalent to above-mentioned radio-frequency devices) is supported, With 10k stepping, with signal source and audiofrequency spectrometer, cavity body filter flatness characteristic is carried out with actual scanning, form cavity filtering Device full band scan frequency and the mapping table of cavity body filter flatness, and determine cavity body filter nominal carrier (i.e. Actual flatness and the immediate carrier wave of cavity design attribute) (be equivalent to above-mentioned flat as the characteristic parameter of cavity body filter Smooth degree compensates table), in a text form in flash on whole machine that write cavity body filter is located；
Step s704, the whole machine of rru after the power-up, is pre-stored in the cavity properties parameter list file in flash by reading, And parsed, after rru cell is set up, according to the frequency point information of carrier wave on downlink, obtain downlink The corresponding flat angle value of carrier frequency point of upper foundation, (it should be noted that because the sampled point of cavity flatness is discontinuous, In the case that frequency falls between two sampled points, linear fit is carried out according to practical situation) detected by bottom simultaneously Obtain each carrier wave actual emission power (being equivalent to above-mentioned descending actual power) on downlink；
Step s706, according to the actual transmission power of the flat angle value obtaining in step s704 and each carrier wave, is carried out Actual coarse adjustment compensating factor calculates, and its calculating process is as follows:
If c1, c2…cnRepresent the descending power of n carrier wave on down going channel, f1, f2…fnRepresent on downlink from The n carrier frequency point getting in characteristic parameter table corresponding flat angle value respectively, a1, a2…anRepresent coarse adjustment flatness Compensating factor, then according to formulaCalculate the compensating factor of the outer link of each carrier wave ring；
Step s708, by being periodically detected bottom power, obtains each carrier wave downgoing baseband power of downlink simultaneously, And forward detection power；
Step s710, according to the downgoing baseband power of each carrier wave obtaining in step s708 and the power of forward detection, Carry out the calculating of fine tuning compensating factor, its calculating process is as follows:
If d1, d2…dnRepresent the downgoing baseband power of n carrier wave on down going channel, p1, p2…pnRepresent each respectively The forward detection power of carrier wave, b1, b2…bnRepresent the compensating factor of fine tuning flatness, then according to formula Calculate the fine tuning compensating factor of each carrier wave；
Step s712, calculates, according to step s706, the coarse adjustment compensating factor a obtainingnCalculate the thin of acquisition with step s710 Adjust compensating factor bn, calculate each carrier wave and expect flatness offset (being equivalent to above-mentioned flatness offset) detn, simultaneously Whole machine descending carrier maximum compensation thresholding (being equivalent to above-mentioned pre-determined threshold) thmax is obtained according to whole machine characteristic, judges each The expected flatness offset of carrier wave whether more than thmax, without exceeding, then rru digital intermediate frequency circuit according to The expected flatness offset detn of each carrier wave is adjusted to carrier wave flatness, and the expection if there are one of carrier wave is put down Smooth degree offset more than thmax, does not then compensate, and reporting equipment alarm is to point out downlink abnormal.
In sum, by the above embodiment of the present invention and preferred embodiment, increased a kind of descending carrier flatness newly and mended Repay pattern, using the calculating to coarse adjustment compensating factor and fine tuning compensating factor, obtain flatness offset, according to flat Degree offset, carries out flatness compensation to each carrier wave, solves the problems, such as that rru descending carrier flatness is poor, improve The flatness of rru descending carrier, by the enforcement of sub-carrier compensation technique, optimizes wideband rru intercarrier flatness special Property, the overall rru systematic function of lifting.
Obviously, those skilled in the art should be understood that each module of the above-mentioned present invention or each step can be with general Realizing, they can concentrate on single computing device computing device, or be distributed in multiple computing devices and formed Network on, alternatively, they can be realized with the executable program code of computing device, it is thus possible to by they Storage to be executed by computing device in the storage device, and in some cases, can be to hold different from order herein The shown or described step of row, or they are fabricated to respectively each integrated circuit modules, or will be many in them Individual module or step are fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware Combine with software.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the technology of this area For personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any Modification, equivalent, improvement etc., should be included within the scope of the present invention.

Claims (10)

1. a kind of descending carrier flatness compensation method is it is characterised in that include:
According to the flatness characteristic of radio-frequency devices, determine the coarse adjustment compensating factor of each carrier wave in multiple descending carriers, its In, described flatness characteristic includes: the operating frequency of described radio-frequency devices, and the mapping of temperature and described flatness is closed System；
Downgoing baseband power according to described each carrier wave enters the forward power before circulator with described each carrier wave, really The fine tuning compensating factor of fixed described each carrier wave；
The described fine tuning compensating factor of the described coarse adjustment compensating factor to described each carrier wave and described each carrier wave carries out adding Power calculates, and obtains the flatness offset of described each carrier wave；
According to described flatness offset, respectively flatness compensation is carried out to described each carrier wave.
2. method according to claim 1 is it is characterised in that according to the flatness characteristic of radio-frequency devices, determine multiple In descending carrier, the coarse adjustment compensating factor of each carrier wave includes:
According to the flatness characteristic of described radio-frequency devices, generate flatness and compensate table；
Operating frequency according to described each carrier wave and Current Temperatures, determine described each in described flatness compensation table The flat angle value of carrier wave；
Described flat angle value according to described each carrier wave and the descending actual power of described each carrier wave, calculate described coarse adjustment Compensating factor.
3. method according to claim 2 it is characterised in that in the plurality of descending carrier n-th carrier wave described Coarse adjustment compensating factor anCalculated according to following equation:
a n = σ i = 1 n c i ( 1 + σ i = 2 n 1 / f i ) * c n f n ;
Wherein, cnRepresent the descending actual power of n-th carrier wave in the plurality of descending carrier, fn represents described many The flat angle value of n-th carrier wave in individual descending carrier.
4. method according to claim 1 it is characterised in that according to the downgoing baseband power of described each carrier wave with described Each carrier wave enters the forward power before circulator, determines that the fine tuning compensating factor of described each carrier wave includes:
Obtain the described downgoing baseband power of described each carrier wave and the forward detection power of described each carrier wave, wherein, institute State forward detection power and by feedback link, described forward power is carried out detecting and obtain；
Described downgoing baseband power according to described each carrier wave and the described forward detection power of described each carrier wave, calculate The described fine tuning compensating factor of described each carrier wave.
5. method according to claim 4 it is characterised in that in the plurality of descending carrier n-th carrier wave described Fine tuning compensating factor bn calculates according to following equation:
b n = p n * σ 1 = 1 n d i d n * σ i = 1 n p i ;
Wherein, dnRepresent the downgoing baseband power of n-th carrier wave in the plurality of descending carrier, pnRepresent described many The forward detection power of n-th carrier wave in individual descending carrier.
6. method according to any one of claim 1 to 5 is it is characterised in that according to described flatness offset, Respectively described each carrier wave is carried out with flatness compensation include:
Judge whether the described flatness offset of described each carrier wave is in pre-determined threshold；
In the case that the described flatness offset determining described each carrier wave is in described pre-determined threshold, according to The described flatness offset of described each carrier wave carries out flatness compensation to described each carrier wave.
7. method according to claim 6 is it is characterised in that compensate in the described flatness determining described each carrier wave Beyond in the case of described pre-determined threshold, methods described also includes value:
Report abnormality alarming.
8. a kind of descending carrier flatness compensation device is it is characterised in that include:
First determining module, for the flatness characteristic according to radio-frequency devices, determines each carrier wave in multiple descending carriers Coarse adjustment compensating factor, wherein, described flatness characteristic includes: the operating frequency of described radio-frequency devices, temperature with The mapping relations of described flatness；
Second determining module, enters circulator for the downgoing baseband power according to described each carrier wave with described each carrier wave Forward power before, determines the fine tuning compensating factor of described each carrier wave；
Computing module, for mending to the described coarse adjustment compensating factor of described each carrier wave and the described fine tuning of described each carrier wave Repay the factor to be weighted, obtain the flatness offset of described each carrier wave；
Compensating module, for according to described flatness offset, carrying out flatness compensation to described each carrier wave respectively.
9. device according to claim 8 is it is characterised in that the first determining module includes:
Signal generating unit, for the flatness characteristic according to described radio-frequency devices, generates flatness and compensates table；
Determining unit, for the operating frequency according to described each carrier wave and Current Temperatures, compensates in described flatness The flat angle value of described each carrier wave is determined in table；
First computing unit, for the descending reality of the described flat angle value according to described each carrier wave and described each carrier wave Power, calculates described coarse adjustment compensating factor.
10. device according to claim 8 is it is characterised in that the second determining module includes:
Acquiring unit, for obtaining the described downgoing baseband power of described each carrier wave and the forward detection of described each carrier wave Power, wherein, described forward detection power carries out detecting to described forward power by feedback link and obtains；
Second computing unit, for described in the described downgoing baseband power according to described each carrier wave and described each carrier wave Forward detection power, calculates the described fine tuning compensating factor of described each carrier wave.
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