CN103227683B - A kind of method and device RRU fault being carried out to joint-detection - Google Patents
A kind of method and device RRU fault being carried out to joint-detection Download PDFInfo
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Abstract
The invention provides a kind of method of RRU fault being carried out to joint-detection, comprise: multiple test item is set fault detect is carried out to RRU, and give corresponding weighted value according to the testing result of each test item to the node involved by this test item, respectively the weighted value of each node being carried out the cumulative weighted results obtaining each node again, is finally malfunctioning node by node locating the highest for weighted results.Present invention also offers a kind of device RRU fault being carried out to joint-detection.Application the present invention can improve the accuracy of RRU fault location.
Description
Technical field
The present invention relates to mobile communication technology field, particularly a kind of method and device RRU fault being carried out to joint-detection.
Background technology
In the Remote Radio Unit (RRU) of base station, because function is complicated, and outfield operational environment is comparatively complicated, breaks down than being easier to; And once break down, due to the complexity of its operational environment, safeguard with on-the-spot location also more difficult.
Existing RRU is more existing fault warning functions generally, but concrete alarm makes prompting for the local fault phenomenon showed often, accurately cannot be mapped to the root of fault because of source.
Fig. 1 is RRU system architecture schematic diagram.In Fig. 1:
CPU is responsible for controlling RRU and the function of partial data process;
Digital Intermediate Frequency System completes the process of intermediate frequency data passage;
Down link is used for the conversion of the conversion of settling signal from digital intermediate frequency to analog intermediate frequency and even radio frequency, amplification, filtering, gain control; Down link specifically comprises with lower module: digital to analog converter (DAC), rf modulations amplify link, preset gain controls (PGC) and power amplification (PA);
Up link has been used for radiofrequency signal amplification, filtering, has been converted to intermediate frequency and analog-to-digital conversion; Up link specifically comprises with lower module: low noise amplifier (LNA), PGC, rf modulations amplify link and analog to digital converter (ADC);
Feedback link is for completing the detection of down link.
Current RRU warning system, the Output rusults generally by detecting dotted portion in Fig. 1 judges whether there is exception in link.Such as: the Output rusults detecting PA in down link, detect the Output rusults modulating coupling in feedback link, and the Output rusults of ADC in up link.Visible, by detecting the whether normal of link end signal, existing RRU warning system can only judge whether whole link exists exception, and cannot judge for the exception of link source or intermediate node.
Just because of above-mentioned reason, outfield fault accurately cannot be located, thus erroneous judgement may be caused, cause economic loss.
Summary of the invention
The invention provides a kind of method and the device that RRU fault are carried out to joint-detection, to improve the accuracy of RRU fault location.
A kind of radio frequency extension unit (RRU) fault provided by the invention carries out the method for joint-detection, comprising:
N number of test item is set fault detect is carried out to RRU; N is greater than 2;
Testing result according to each test item gives corresponding weighted value to the node involved by this test item;
Respectively the weighted value of each node is carried out the cumulative weighted results obtaining each node;
Be malfunctioning node by node locating the highest for weighted results.
Preferably, described test item comprises following one or more combination in any:
The Output rusults of down link intermediate power amplifier (PA) is detected;
Fault detect is carried out to feedback link;
The Output rusults of analog to digital converter in up link (ADC) is detected;
Fault detect is carried out to the element in down link;
Fault detect is carried out to the element in up link;
Fault detect is carried out to the loop wire that the rf modulations amplification link from down link arrives Digital Intermediate Frequency System through coupling disc and up link;
Fault detect is carried out to the loop wire of the rf modulations amplification link arriving up link from Digital Intermediate Frequency System through down link and coupling disc;
Standing-wave ratio (VSWR) detects;
Outer VSWR is with to detect.
Preferably, the element in down link comprises: digital to analog converter (DAC), rf modulations amplify link or preset gain controls (PGC);
Element in up link comprises: ADC, rf modulations amplify link or PGC.
Preferably, the mode of element being carried out to fault detect is: keep the gain of other elements in RRU constant, adjust the gain of described element, and the Output rusults of feedback link before and after adjustment gain is contrasted, if the result of contrast is normal, then the testing result of this test item is normal, otherwise the testing result of this test item is abnormal.
Preferably, for each test item, cannot be confirmed whether for according to the testing result of this test item the node that there is fault, the weighted value that this node corresponds to described test item is set to 0; Confirm the node that may there is fault for according to the testing result of this test item, the weighted value that this node corresponds to described test item is set to a positive number; Confirm for according to the testing result of this test item the node that there is not fault, the weighted value that this node corresponds to described test item is set to a negative.
A kind of radio frequency extension unit (RRU) fault provided by the invention carries out the device of joint-detection, comprising:
Detection module, for carrying out to RRU the testing result that fault detect obtains corresponding to each test item according to the N number of test item pre-set; N is greater than 2;
Weighting block, gives corresponding weighted value for the testing result according to each test item to the node involved by this test item;
Node locating the highest for weighted results for respectively the weighted value of each node being carried out the cumulative weighted results obtaining each node, and is malfunctioning node by fault location module.
Preferably, described detection module is used for detecting the one or more combination in any in following test item:
The Output rusults of down link intermediate power amplifier (PA) is detected;
Fault detect is carried out to feedback link;
The Output rusults of analog to digital converter in up link (ADC) is detected;
Fault detect is carried out to the element in down link;
Fault detect is carried out to the element in up link;
Fault detect is carried out to the loop wire that the rf modulations amplification link from down link arrives Digital Intermediate Frequency System through coupling disc and up link;
Fault detect is carried out to the loop wire of the rf modulations amplification link arriving up link from Digital Intermediate Frequency System through down link and coupling disc;
Standing-wave ratio (VSWR) detects;
Outer VSWR is with to detect.
Preferably, when carrying out fault detect to the element in down link, detection module is used for the digital to analog converter (DAC) in down link, rf modulations amplifies link or preset gain control (PGC) carries out fault detect;
When carrying out fault detect to the element in up link, detection module is used for the ADC in down link, rf modulations amplifies link or PGC carries out fault detect.
Preferably, when carrying out fault detect to element, described detection module keeps the gain of other elements in RRU constant, adjust the gain of described element, and the Output rusults of feedback link before and after adjustment gain is contrasted, under the result of contrast is normal situation, judge that the testing result of this test item is as normal, otherwise, judge that the testing result of this test item is as exception.
Preferably, for each test item, cannot be confirmed whether for according to the testing result of this test item the node that there is fault, the weighted value that this node corresponds to described test item is set to 0 by described weighting block; Confirm the node that may there is fault for according to the testing result of this test item, the weighted value that this node corresponds to described test item is set to a positive number by described weighting block; Confirm for according to the testing result of this test item the node that there is not fault, the weighted value that this node corresponds to described test item is set to a negative by described weighting block.
As seen from the above technical solution, method and device RRU fault being carried out to joint-detection provided by the invention, by arranging multiple test item, fault detect is carried out to RRU, and give corresponding weighted value according to the testing result of each test item to the node involved by this test item, finally respectively the weighted value of each node being carried out the cumulative weighted results obtaining each node, is malfunctioning node by node locating the highest for weighted results.Thus by achieving RRU fault location to the joint-detection of multiple test item, and it is more accurate to make the source of trouble locate, and can reduce probability of giving an encore by mistake.
Accompanying drawing explanation
Fig. 1 is RRU system architecture schematic diagram;
Fig. 2 is the system schematic of in a preferred embodiment of the present invention, RRU fault being carried out to joint-detection;
Fig. 3 is that in a preferred embodiment of the present invention, VSWR tests schematic diagram;
Fig. 4 is better composition structural representation RRU fault being carried out to the device of joint-detection of the present invention one.
Embodiment
For making object of the present invention, technical scheme and advantage clearly understand, to develop simultaneously embodiment referring to accompanying drawing, the present invention is described in further detail.
Main thought of the present invention is: arrange multiple test item and carry out fault detect to RRU, and give corresponding weighted value according to the testing result of each test item to the node involved by this test item, finally respectively the weighted value of each node being carried out the cumulative weighted results obtaining each node, is malfunctioning node by node locating the highest for weighted results.So, by achieving RRU fault location to the joint-detection of multiple test item.
Based on above-mentioned main thought, need on the basis of existing RRU fault detect project, more newly-increased test items, to realize the complete detection to RRU fault.Be described below by a preferred embodiment.
Fig. 2 is the system schematic of in a preferred embodiment of the present invention, RRU fault being carried out to joint-detection.See Fig. 2, the present invention is newly-increased six investigation points and two loopback detection routes on the basis of existing technology, and increase VSWR (standing-wave ratio) detection and be with outer VSWR to detect (as shown in Figure 3).Specifically comprise:
Three are increased to down link and investigates point: DAC, rf modulations amplification link and PGC, as the node of A ~ C indication in Fig. 2;
Three are increased to up link and investigates point: ADC, rf modulations amplification link and PGC, as the node of D ~ F indication in Fig. 2;
The newly-increased rf modulations from down link amplifies link arrives Digital Intermediate Frequency System loop detection circuit through coupling disc and up link, as shown in curve G in figure;
The newly-increased loop detection circuit arriving the rf modulations amplification link of up link from Digital Intermediate Frequency System through down link and coupling disc, as shown in curve H in figure.
Referring to Fig. 3, brief description is carried out to the principle that VSWR detection and the outer VSWR of band detect.
VSWR detects matching degree for detecting radio frequency link, mainly detects to transmit (being calculated by feedback power) and reflected signal strength calculates.VSWR can the connection status of detection line, good working condition etc.
The radio frequency link reflected signal that matching degree is high is relatively little.RRU normally work and connection under normal circumstances, VSWR value is less.
The method being with outer VSWR to detect is identical with VSWR method, and just VSWR detects is signal in Fault detection filter band, and the outer VSWR of band detects is filter band external signal.
Filtered device filters by out of band signal under normal circumstances, and so the outer VSWR value of band can be larger.If detected value is very little, standing wave detection circuit fault is described.
In prior art, existing test item comprises: detect the Output rusults of PA in down link, carry out fault detect to feedback link, and detects the Output rusults of ADC in up link.
Test item of the present invention can comprise the one or more combination in any in above-mentioned test item.
In the present invention, the mode of a certain element being carried out to fault detect is: keep the gain of other elements in RRU constant, adjust the gain of this element, and the Output rusults of feedback link before and after adjustment gain is contrasted, if the result of contrast is normal, the testing result of the test item then corresponding to this element is normal, otherwise the testing result of the test item corresponding to this element is abnormal.
Preferably, can first detect test item existing in prior art, then investigate point for six that increase newly the present invention to detect, the loopback result of two the loopback detection circuits finally increased newly according to the present invention detects these two loopback detection circuits.
Each test item will relate to some interdependent nodes, for each test item, cannot be confirmed whether for according to the testing result of this test item the node that there is fault, and the weighted value that this node corresponds to this test item is set to 0; Confirm the node that may there is fault for according to the testing result of this test item, the weighted value that this node corresponds to this test item is set to a positive number; Confirm for according to the testing result of this test item the node that there is not fault, the weighted value that this node corresponds to this test item is set to a negative.
Corresponding to said method, present invention also offers a kind of device RRU fault being carried out to joint-detection as shown in Figure 4.Fig. 4 shown device comprises: detection module 410, weighting block 420 and fault location module 430.Wherein:
Detection module 410, for carrying out to RRU the testing result that fault detect obtains corresponding to each test item according to the N number of test item pre-set; N is greater than 2;
Weighting block 420, gives corresponding weighted value for the testing result according to each test item to the node involved by this test item;
Node locating the highest for weighted results for respectively the weighted value of each node being carried out the cumulative weighted results obtaining each node, and is malfunctioning node by fault location module 430.
Preferably, detection module 410 may be used for detecting the one or more combination in any in following test item:
The Output rusults of PA in down link is detected;
Fault detect is carried out to feedback link;
The Output rusults of ADC in up link is detected;
Fault detect is carried out to the element in down link;
Fault detect is carried out to the element in up link;
Fault detect is carried out to the loop wire that the rf modulations amplification link from down link arrives Digital Intermediate Frequency System through coupling disc and up link;
Fault detect is carried out to the loop wire of the rf modulations amplification link arriving up link from Digital Intermediate Frequency System through down link and coupling disc;
Standing-wave ratio (VSWR) detects;
Outer VSWR is with to detect.
Preferably, when carrying out fault detect to the element in down link, detection module 310 may be used for the DAC in down link, rf modulations amplifies link or PGC carries out fault detect; When carrying out fault detect to the element in up link, detection module 420 is for carrying out fault detect to the ADC in down link, rf modulations amplification link or PGC.
When carrying out fault detect to element, detection module 410 keeps the gain of other elements in RRU constant, adjust the gain of described element, and the Output rusults of feedback link before and after adjustment gain is contrasted, under the result of contrast is normal situation, judge that the testing result of this test item is as normal, otherwise, judge that the testing result of this test item is as exception.
For each test item, cannot be confirmed whether for according to the testing result of this test item the node that there is fault, the weighted value that this node corresponds to described test item is set to 0 by weighting block 420; Confirm the node that may there is fault for according to the testing result of this test item, the weighted value that this node corresponds to described test item is set to a positive number by weighting block 420; Confirm for according to the testing result of this test item the node that there is not fault, the weighted value that this node corresponds to described test item is set to a negative by weighting block 420.
Below by a concrete example, technical solution of the present invention is further elaborated.
In this example, first construct weighting record sheet as shown in table 1.In table 1, the 1st is classified as test item, each node (in the present invention, node not only refers to concrete element, also comprises some connecting links, such as: down link) in the RRU involved by the 1st behavioral value project.
Each test item during table 1 the 1st arranges all is arranged according to the present invention.Successively these test items are detected, and give corresponding weights according to each interdependent node in testing result his-and-hers watches 1 the 1st row, after all test item detections terminate, the weights of each node are added up, will the comprehensive detection result as shown in table 1 last column be obtained.
In this example, artificial injection down link (TX link) abnormal failure, can find according to this comprehensive detection result: detect complete after, what weighted value was the highest is TX link, therefore, locating this node exists abnormal, and the visible technical solution of the present invention that adopts can accurately locate RRU fault.
Table 1
In table 1,0 representative cannot be confirmed whether to there is fault;
May fault be there is in positive number representative;
There is fault scarcely in negative representative.
As seen from the above-described embodiment, method and device RRU fault being carried out to joint-detection provided by the invention, by arranging multiple test item, fault detect is carried out to RRU, and give corresponding weighted value according to the testing result of each test item to the node involved by this test item, finally respectively the weighted value of each node being carried out the cumulative weighted results obtaining each node, is malfunctioning node by node locating the highest for weighted results.Thus by achieving RRU fault location to the joint-detection of multiple test item, and it is more accurate to make the source of trouble locate, and can reduce probability of giving an encore by mistake.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (8)
1. radio frequency extension unit RRU fault carries out a method for joint-detection, it is characterized in that, comprising:
N number of test item is set fault detect is carried out to RRU; N is greater than 2;
For each test item, cannot be confirmed whether for according to the testing result of this test item the node that there is fault, the weighted value that this node corresponds to described test item is set to 0; Confirm the node that may there is fault for according to the testing result of this test item, the weighted value that this node corresponds to described test item is set to a positive number; Confirm for according to the testing result of this test item the node that there is not fault, the weighted value that this node corresponds to described test item is set to a negative;
Respectively the weighted value of each node is carried out the cumulative weighted results obtaining each node;
Be malfunctioning node by node locating the highest for weighted results.
2. method according to claim 1, is characterized in that, described test item comprises following one or more combination in any:
The Output rusults of down link intermediate power amplifier PA is detected;
Fault detect is carried out to feedback link;
The Output rusults of analog to digital converter ADC in up link is detected;
Fault detect is carried out to the element in down link;
Fault detect is carried out to the element in up link;
Fault detect is carried out to the loop wire that the rf modulations amplification link from down link arrives Digital Intermediate Frequency System through coupling disc and up link;
Fault detect is carried out to the loop wire of the rf modulations amplification link arriving up link from Digital Intermediate Frequency System through down link and coupling disc;
Standing-wave ratio VSWR detects;
Outer VSWR is with to detect.
3. method according to claim 2, is characterized in that:
Element in down link comprises: digital to analog converter DAC, rf modulations amplify link or preset gain control PGC;
Element in up link comprises: ADC, rf modulations amplify link or PGC.
4. according to the method in claim 2 or 3, it is characterized in that:
The mode of element being carried out to fault detect is: keep the gain of other elements in RRU constant, adjust the gain of described element, and the Output rusults of feedback link before and after adjustment gain is contrasted, if the result of contrast is normal, then the testing result of this test item is normal, otherwise the testing result of this test item is abnormal.
5. radio frequency extension unit RRU fault carries out a device for joint-detection, it is characterized in that, comprising:
Detection module, for carrying out to RRU the testing result that fault detect obtains corresponding to each test item according to the N number of test item pre-set; N is greater than 2;
Weighting block, for each test item, cannot be confirmed whether for according to the testing result of this test item the node that there is fault, and the weighted value that this node corresponds to described test item is set to 0 by described weighting block; Confirm the node that may there is fault for according to the testing result of this test item, the weighted value that this node corresponds to described test item is set to a positive number by described weighting block; Confirm for according to the testing result of this test item the node that there is not fault, the weighted value that this node corresponds to described test item is set to a negative by described weighting block;
Node locating the highest for weighted results for respectively the weighted value of each node being carried out the cumulative weighted results obtaining each node, and is malfunctioning node by fault location module.
6. device according to claim 5, is characterized in that, described detection module is used for detecting the one or more combination in any in following test item:
The Output rusults of down link intermediate power amplifier PA is detected;
Fault detect is carried out to feedback link;
The Output rusults of analog to digital converter ADC in up link is detected;
Fault detect is carried out to the element in down link;
Fault detect is carried out to the element in up link;
Fault detect is carried out to the loop wire that the rf modulations amplification link from down link arrives Digital Intermediate Frequency System through coupling disc and up link;
Fault detect is carried out to the loop wire of the rf modulations amplification link arriving up link from Digital Intermediate Frequency System through down link and coupling disc;
Standing-wave ratio VSWR detects;
Outer VSWR is with to detect.
7. device according to claim 6, is characterized in that:
When carrying out fault detect to the element in down link, detection module is used for the digital to analog converter DAC in down link, rf modulations amplifies link or preset gain control PGC carries out fault detect;
When carrying out fault detect to the element in up link, detection module is used for the ADC in down link, rf modulations amplifies link or PGC carries out fault detect.
8. the device according to claim 6 or 7, is characterized in that:
When carrying out fault detect to element, described detection module keeps the gain of other elements in RRU constant, adjust the gain of described element, and the Output rusults of feedback link before and after adjustment gain is contrasted, under the result of contrast is normal situation, judge that the testing result of this test item is as normal, otherwise, judge that the testing result of this test item is as exception.
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| CN103702356B (en) * | 2013-12-31 | 2017-04-05 | 大唐移动通信设备有限公司 | A kind of trouble-shooter based on TDD system |
| CN106332157A (en) * | 2015-07-06 | 2017-01-11 | 中兴通讯股份有限公司 | Wireless communication device detection method and wireless communication device |
| CN106341355A (en) * | 2015-07-09 | 2017-01-18 | 深圳市中兴微电子技术有限公司 | Digital intermediate frequency processing system detection method and device |
| WO2022087818A1 (en) * | 2020-10-27 | 2022-05-05 | 罗森伯格技术有限公司 | System and method for testing radio remote unit |
| CN115766422A (en) * | 2022-11-10 | 2023-03-07 | 湖南省康普通信技术有限责任公司 | Prru power amplifier management system and activation method |
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| CN101426219A (en) * | 2008-11-25 | 2009-05-06 | 芯通科技（成都）有限公司 | Detection method for TD-SCDMA multichannel radio frequency remote unit antenna system |
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| JP5367843B2 (en) * | 2009-12-16 | 2013-12-11 | 株式会社東芝 | Radio signal processing apparatus and radio apparatus |
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| CN1851491A (en) * | 2006-02-20 | 2006-10-25 | 华为技术有限公司 | Fault positioning method |
| CN101426219A (en) * | 2008-11-25 | 2009-05-06 | 芯通科技（成都）有限公司 | Detection method for TD-SCDMA multichannel radio frequency remote unit antenna system |
| CN101834677A (en) * | 2010-03-11 | 2010-09-15 | 京信通信系统（中国）有限公司 | Base band power statistic-based standing wave detecting system and method for radio frequency remote system |
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