CN1266961C - A method for backup of power amplifier and equipment thereof - Google Patents
A method for backup of power amplifier and equipment thereof Download PDFInfo
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- CN1266961C CN1266961C CN 03104828 CN03104828A CN1266961C CN 1266961 C CN1266961 C CN 1266961C CN 03104828 CN03104828 CN 03104828 CN 03104828 A CN03104828 A CN 03104828A CN 1266961 C CN1266961 C CN 1266961C
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Abstract
The present invention provides a backup method and a device thereof for a power amplifier, which is suitable for a wireless communication system. N channels of master signals are respectively connected with N power amplifiers from N input ports to be amplified and outputted through N output ports. N channels of diversity signals are respectively inputted a first unit N-throw electronic switch through a previously selected channel which is connected with an amplifier; after the diversity signals are amplified, the diversity signals are inputted to a second unit N-throw electronic switch to be outputted from a corresponding output port by selecting a corresponding channel; when the amplifier of the Mth channel master signal channel has a fault, two unit N-throw electronic switches switch the channel to a diversity signal channel corresponding to the Mth channel master signal channel, and a service executed by the Mth channel master signal channel is turned to the diversity signal channel. The present invention not only can provide an amplifier backup function, but also can provide the capability of a backup channel enhancing descending coverage when the amplifier has no fault.
Description
Technical field
The present invention relates to wireless communication system, especially relate to the technical field of base station intermediate power amplifier (to call " power amplifier " in the following text).
Technical background
In wireless communication system, very strict to the base station reliability requirement.Some low capacity system particularly, site location is remote, and environment is abominable, and is more strict to the reliability requirement of system.So most solutions have all been carried out backup configuration to significant element.In the WCDMA system, Linear Power Amplifier uses in a large number, the reliability of its single module is much lower with respect to other unit of system, is the bottleneck of system reliability, so the backup of power amplifier unit is each system designer special concern and need inclines and must realize with all strength.Its basic thought is: when certain power amplifier unit in the discovery system breaks down can not work on the time, in time handle by system, all or part of function on this power amplifier unit transferred on its backup units finish, thereby the operate as normal to system does not produce big influence, race against time and carry out maintenance to trouble unit, recovery system is to normal condition.
Allocation plan with a 3+1 backup is the existing general power amplifier backup scenario of example explanation below.As shown in Figure 1, wherein, totally 4 of power amplifier units, first power amplifier unit 1021, second power amplifier unit 1022, the 3rd power amplifier unit 1023, the 4th power amplifier unit 1024, what mainly use is first three power amplifier unit, and the 4th power amplifier unit 1024 is standby power amplifier units, is substituting unit interim when any one breaks down in other three power amplifier units.Power amplifier unit is a standalone module, and former and later two electronic switches are main composition unit of this programme, also comprise slave parts such as some control lines, and the realization of controlled function is to finish in the other parts of base station system.
As can be seen from Figure 1, input port is three, is respectively first input end mouth 1031, second input port 1032, the 3rd input port 1033; Output port also is three, is respectively first output port 1041, second output port 1042, the 3rd output port 1043.Connect four power amplifier units after three input ports are thrown (3P4T) electronic switch 1011 through one three four, connect three output ports through behind another 3P4T electronic switch 1012 through 4 power amplifier unit amplified signal.
The realization of backup functionality is to rely on two electronic switches, system control command 105 times, cooperates the selection that realizes signalling channel, thereby selects suitable power amplifier unit to finish signal amplifying function.
Illustrate the implementation of backup functionality: under the normal condition, first power amplifier unit 1021, second power amplifier unit 1022, the 3rd power amplifier unit 1023 be operate as normal all, so system selects these three power amplifiers to finish signal amplifying function, and the 4th power amplifier unit 1024 is idle standby.And the channel status of two electronic switches as shown in Figure 1, selects the passage that links to each other with first three power amplifier.
Figure 2 shows that the passage switch instances that illustrates when wherein second power amplifier unit breaks down, if system discovery second power amplifier unit 1022 breaks down, system can issue control command for two electronic switches by control line 105, carries out passage and switches.Two switches can be according to order, the contact channel of second power amplifier unit 1022 that disconnection is broken down, and channel selecting is arrived standby power amplifier unit---come on the passage that the 4th power amplifier unit 1024 links to each other, thereby finished backup power amplifier handoff functionality, and to the almost not influence of system's operate as normal.
Need to prove that except the 3+1 backup mode of giving an example, foregoing description is suitable equally to the identical N+1 backup mode of principle, just passage and power amplifier unit quantity variance have not been enumerated here one by one.
In existing technical scheme, the backup power amplifier unit is on the shelf at ordinary times, so its effect can not embody in the most of the time, and for the client, be a kind of significant wastage of resource, because in wireless base system, particularly in the WCDMA system, the cost proportion that the cost of power amplifier unit accounts for whole base station bigger (put situation under probably account for 30% at full configuration), any client wishes to make full use of resource, reaches maximum benefit-cost-ratio.
In addition, in WCDMA system and some other system, transmission channel has diversity branch, can select to use or do not use.Using the benefit of diversity is to have increased the coverage of downstream signal, and improved the portable terminal antijamming capability.But top conceptual design does not embody the effect of diversity, does not support diversity usually, and there is the diversity effect in perhaps original system, because adopted backup scenario, and it is on the shelf to have wasted the diversity feature of transmitter.
Summary of the invention
Purpose of the present invention is exactly the new method that proposes a kind of power amplifier backup, radio communication base station power amplifier unit backup functionality can be provided, and when power amplifier does not break down, the ability that can provide backup path to strengthen descending covering has simultaneously solved the contradiction that base station high reliability request and power amplifier module hang down reliability reality.
Another object of the present invention is to propose a kind of device that can realize said method.
For realizing the object of the invention, a kind of method of power amplifier backup is applicable to may further comprise the steps in the wireless communication system:
A, the main collection signal in N road are connected with N power amplifier from N input port respectively, and respectively from N output port output, wherein N was not less than 1 positive integer after signal amplified;
B, N road diversity signal are input to the electronic switch that first N of unit throws from N input port respectively, connect a power amplifier by the passage of selecting in advance, signal is input to the electronic switch that second N of unit throws after amplifying, and selects corresponding passage to export from corresponding output port;
C, break down when the power amplifier of the main collection signalling channel in M road, first N of unit throw electronic switch and second N of unit throw electronic switch with passage switch to the corresponding diversity signal passage of the main collection signalling channel in M road on, and the business that the main collection signalling channel in M road is carried out forwards on this diversity signal passage, and wherein M is the positive integer less than N.
Among the step B, according to electronic switch State Control selector channel in advance.
The switching of passage described in the step c issues control command by system and finishes.
A kind of device of realizing described power amplifier backup method, comprise N road input port and output port, and the power amplifier of the N between respective input mouth and output port, form the parallel passage in N road, also comprise route N road backup input port and output port, throw electronic switch and throw the passage of a power amplifier composition between the electronic switch that this passage and described N paths walk abreast at described two N of unit with two N of unit that described input port and output port are connected respectively.
Comprise that also described two N of unit of connection throw the circuit of electronic switch and system.
Adopt the present invention, can make full use of the backup power amplifier, finished system's optimum performance.The backup power amplifier can be supported the diversity signal emission on a certain road flexibly, thereby optimize systematic function to a certain extent under the situation that backup does not need at ordinary times, improve system utility; And reduced cost, because in the possibility of realizing first key point, other schemes all are greatly to have increased system cost, and be can not be adopted on certain meaning, and this programme does not only increase cost, and has reduced cost, has reached same purpose; Utilized the diversity passage simultaneously, other schemes are not used the diversity passage, have reduced the reliability and the performance of system, because diversity has not only been assisted main collection passage, have optimized channel performance jointly; When needing, diversity can also replace the function of main collection fully as the backup of main collection; Another advantage is that it is not only simple switch control handoff functionality that control system has been brought into play in this scheme, but except control switch switches, also combines the orthofunction between the main collection diversity, conversion, thus realize needed configuration neatly.
Description of drawings
Fig. 1 is a power amplifier backup architecture schematic diagram under the normal condition in the prior art;
Fig. 2 is a power amplifier backup architecture schematic diagram under the switching state in the prior art;
Fig. 3 is a power amplifier backup architecture schematic diagram under the normal condition among the present invention;
Fig. 4 is a power amplifier backup architecture schematic diagram under the switching state among the present invention.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described.
Be method and the implement device thereof that example illustrates power amplifier backup of the present invention still with three tunnel signalling channels.Power amplifier backup architecture under the normal condition among the present invention as shown in Figure 3, the present invention has been divided into two relatively independent parts with signalling channel:
First is main collection signalling channel, three road main collection signals connect three power amplifier units respectively from first input end mouth 2031, second input port 2032, the 3rd input port 2033 respectively: first power amplifier unit 2021, second power amplifier unit 2022, the 3rd power amplifier unit 2023, and after amplifying, exports from first output port 2041, second output port 2042, the 3rd output port 2043 respectively signal.
Second portion is the diversity signal passage, three road diversity signals are input to a unit three and throw (SP3T) electronic switch 2011 from four-input terminal mouth 2034, the 5th input port 2035, the 6th input port 2036, connect standby power amplifier unit (PA-R) 2024 by the selector channel, signal amplifies the back and is entering another SP3T electronic switch 2012, and correspondingly the selector channel is then from the 4th output port 2044, the 5th output port 2045, the output of the 6th output port 2046 thrins.The control of electronic switch state is depended in the selection of passage, and control to be system issue control command by control line 205 finishes.
It may be noted that the electronic switch that the present invention uses is the SP3T type, and be different from the electronic switch form 3P4T that general backup scenario is used.
Under the normal condition, first power amplifier unit 2021, second power amplifier unit 2022, the 3rd power amplifier unit 2023 be operate as normal all, so system selects these three power amplifiers to finish signal amplifying function, and standby power amplifier unit 2024 can be according to agreement before, select any one tunnel diversity to amplify output neatly, such as shown in Figure 3, this road be as first input end mouth 2031 through first power amplifier unit 2021 again to the diversity passage of first output port 2041, the optimization ability that cooperates in fact row now to cover.And this moment two electronic switches channel status as shown in Figure 3.At this time, utilized the function of backup power amplifier well, optimized the components of system as directed performance, and do not allowed resources idle.
Fig. 4 is a power amplifier backup architecture schematic diagram under the switching state among the present invention, and as shown in Figure 4, if system discovery second power amplifier unit 2022 breaks down, system can issue control command for two electronic switches by control line 205, carries out passage and switches.Two switches can be according to order, with channel selecting to the five input ports 2035 through standby power amplifier 2024 again with passage that the 5th output port 2045 links to each other on, and by suitably handling, the business that original second power amplifier unit 2022 is carried out forwards on the backup power amplifier unit 2024 fully to be finished, and the passage that similar processing is formed former cause first input end mouth 2031 to first output port 2041 through first power amplifier unit 2021 again and be converted to by the business that the passage that four-input terminal mouth 2034 is formed to the 4th output port 2044 through backup power amplifier unit 2024 is again finished is jointly all finished to the passage that first output port 2041 is formed through first power amplifier unit 2021 by first input end mouth 2031 again, thereby finished backup power amplifier handoff functionality, and system's operate as normal has not been had a strong impact on.
Need to prove that except the backup mode of giving an example, foregoing description is suitable equally to the identical backup mode of principle, just passage and power amplifier unit quantity variance.
Compare with existing technical scheme, the present invention has following advantage:
The backup power amplifier unit is no longer idle, and when not having the power amplifier unit fault, the backup power amplifier unit is fully utilized, thereby makes client's investment obtain maximized benefit;
The switch control mode is simple, compares with general scheme, and the electronic switch of the prior art of comparing of the electronic switch here is simple relatively, can save cost like this.And in the general backup scenario, the cost of electronic switch accounts for more than 50% of total cost, and reduction has certain benefit to cost so this changes;
Make full use of the diversity passage, WCDMA system particularly, protocol requirement possesses the transmit diversity effect; And existing power amplifier backup scenario can not possess the transmit diversity function under equal configuration; And utilize the diversity passage, and can the optimization system performance, enlarge power system capacity, equal input obtains is benefited biglyyer;
The application of system makes configuration mode flexible, also is convenient to realize; Control system just simply plays the control switch effect in the prior art, does not bring into play other effects; And the present invention only needs to increase on the software some functions, and cost can be ignored, and has just realized more function neatly.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with the people of this technology in the disclosed technical scope of the present invention; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (5)
1, a kind of method of power amplifier backup is applicable in the wireless communication system, it is characterized in that may further comprise the steps:
A, the main collection signal in N road are connected with N power amplifier from N input port respectively, and respectively from N output port output, wherein N was not less than 1 positive integer after signal amplified;
B, N road diversity signal are input to the electronic switch that first N of unit throws from N input port respectively, connect a power amplifier by the passage of selecting in advance, signal is input to the electronic switch that second N of unit throws after amplifying, and selects corresponding passage to export from corresponding output port;
C, break down when the power amplifier of the main collection signalling channel in M road, first N of unit throw electronic switch and second N of unit throw electronic switch with passage switch to the corresponding diversity signal passage of the main collection signalling channel in M road on, and the business that the main collection signalling channel in M road is carried out forwards on this diversity signal passage, and wherein M is the positive integer less than N.
2, the method for claim 1 is characterized in that, described step B is according to electronic switch State Control selector channel in advance.
3, power amplifier backup method as claimed in claim 1 is characterized in that: the switching of passage described in the step c issues control command by system and finishes.
4, a kind of device of realizing the described power amplifier backup method of claim 1, comprise N road input port and output port, and the power amplifier of the N between respective input mouth and output port, form the parallel passage in N road, it is characterized in that also comprising: route N road backup input port and output port, throw electronic switch and throw the passage of a power amplifier composition between the electronic switch at described two N of unit with two N of unit that described input port and output port are connected respectively, this passage and described N paths walk abreast.
5, device as claimed in claim 4 is characterized in that also comprising: one connects described two N of unit and throws the circuit of electronic switch and system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03104828 CN1266961C (en) | 2003-02-20 | 2003-02-20 | A method for backup of power amplifier and equipment thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03104828 CN1266961C (en) | 2003-02-20 | 2003-02-20 | A method for backup of power amplifier and equipment thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN1523907A CN1523907A (en) | 2004-08-25 |
| CN1266961C true CN1266961C (en) | 2006-07-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 03104828 Expired - Fee Related CN1266961C (en) | 2003-02-20 | 2003-02-20 | A method for backup of power amplifier and equipment thereof |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100433575C (en) * | 2004-09-30 | 2008-11-12 | 中兴通讯股份有限公司 | Redundancy backup system and RF switching device for base station backward link |
| CN100433574C (en) * | 2004-09-30 | 2008-11-12 | 中兴通讯股份有限公司 | Redundancy backup system and RF switching device for base station forward link |
| CN100365947C (en) * | 2004-12-17 | 2008-01-30 | 华为技术有限公司 | Heat backup system and method for radio-frequency power amplifier |
| CN100375403C (en) * | 2005-01-26 | 2008-03-12 | 中兴通讯股份有限公司 | Apparatus for common-frequency radio communication system interplate local oscillator multi-backup |
| CN100426660C (en) * | 2005-12-08 | 2008-10-15 | 华为技术有限公司 | Warm back-up and multual-aid system of power amplifier |
| CN100514876C (en) * | 2006-02-21 | 2009-07-15 | 华为技术有限公司 | System and method for realizing radio-frequency receiving-transmitting chain redundance design |
| CN102231621B (en) * | 2011-05-20 | 2014-02-26 | 广州励丰文化科技股份有限公司 | Hot backup method and hot backup device for multi-channel power amplifier |
| CN102437892A (en) * | 2011-09-02 | 2012-05-02 | 上海霍普光通信有限公司 | Cold standby device of high-power optical-fiber amplifier and standby method thereof |
| CN107863974A (en) * | 2017-08-31 | 2018-03-30 | 中国电子科技集团公司第三十八研究所 | A kind of solid state transmitter prime network automatic switching control system |
| CN108964744B (en) * | 2018-06-29 | 2021-04-13 | 西安空间无线电技术研究所 | Communication satellite transponder power amplifier backup ring cascade method |
| CN111756396A (en) * | 2020-07-15 | 2020-10-09 | 维沃移动通信有限公司 | Radio frequency circuit, electronic device, and control method |
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2003
- 2003-02-20 CN CN 03104828 patent/CN1266961C/en not_active Expired - Fee Related
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Granted publication date: 20060726 Termination date: 20200220 |