CN103379532A - Method and apparatus for testing signal quality of radio frequency unit of base station - Google Patents
Method and apparatus for testing signal quality of radio frequency unit of base station Download PDFInfo
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- CN103379532A CN103379532A CN2012101066952A CN201210106695A CN103379532A CN 103379532 A CN103379532 A CN 103379532A CN 2012101066952 A CN2012101066952 A CN 2012101066952A CN 201210106695 A CN201210106695 A CN 201210106695A CN 103379532 A CN103379532 A CN 103379532A
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Abstract
An embodiment of the invention discloses a method and apparatus for testing signal quality of a radio frequency unit of a base station, relates to the communication technical field, and solves the problems that in the prior art, radio frequency unit signal quality is misjudged easily, service is interrupted, and testing speed is slow. The method comprises: receiving a first service signal sent by a base band digital processing unit of the base station; after the radio frequency unit processes the first service signal and thus a second service signal is obtained, processing the second service signal through a reverse channel which is arranged in the radio frequency unit, and thus a third service signal is obtained; performing vector analysis on the first service signal and the third service signal, and thus error vector magnitude (EVM) values of the first service signal and the third service signal are obtained; and testing the signal quality of the radio frequency unit based on the plurality of EVM values in a certain time period. The method and the apparatus are applicable to the base station.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of detection method and device of radio frequency unit signal quality of base station.
Background technology
The base station is the important component part of wireless telecommunications.Described base station comprises base-band digital processing unit and radio frequency unit.The course of work of described base station is, when receiving external signal, carry out digital processing to form digital signal by described base-band digital processing unit, by described radio frequency unit described digital signal is converted to the radiofrequency signal that meets communications protocol again, at last by antenna with described emission of radio frequency signals in space outerpace.Radio frequency unit is changed the quality of described digital signal, is related to the signal quality that send described base station, and wireless traffic is had a great impact.Therefore, detect to judge by the quality to the signal after the radio frequency cell translation whether described radio frequency unit breaks down or unusually just seem particular importance.
The detection method of current radio frequency unit signal quality is by monitoring wireless operational indicator (such as conversation cutting off rate or the conversation error rate etc.), indirectly judges whether fault or unusual of described radio frequency unit.Concrete, by continuing to observe the wireless traffic index of carrying at certain radio frequency unit whether unusual, judge whether there is fault in itself to radio frequency unit.If there is unusually just carrying out alarm, manually check and process, for example: when described conversation cutting off rate or the conversation error rate when higher, fault may occur in described radio frequency unit, but because the factor of the described conversation cutting off rate of impact or the conversation error rate also has a lot (such as user mobile phone problem, external signal interference etc.), if think further to detect whether fault of described radio frequency unit, need the artificial location that arrives the base station, and described radio frequency unit separated, use corresponding detecting instrument and detect.
In the process that realizes the embodiment of the invention, the inventor finds that there are the following problems at least in the prior art: the wireless traffic index of carrying at certain radio frequency unit by observation is judged whether fault of radio frequency unit, owing to there is external disturbance, cause easily erroneous judgement, detect and further adopt to separate described radio frequency unit and use corresponding detecting instrument, can cause the service disconnection of described base station, and the process of separating is slowly complicated, causes slowly problem of testing process.
Summary of the invention
Embodiments of the invention provide a kind of detection method and device of radio frequency unit signal quality of base station, can solve in the prior art when detecting the radio frequency unit signal quality, the detection that causes produces slowly problem of the service disconnection of erroneous judgement and base station and testing process.
For achieving the above object, the present invention adopts following technical scheme:
A kind of detection method of radio frequency unit signal quality of base station, described method comprises:
Receive the first service signal of the base-band digital processing unit transmission of described base station;
Described radio frequency unit to described the first service signal process obtain the second service signal after, by the backward channel that is arranged in the described radio frequency unit described the second service signal is processed, obtain the 3rd service signal;
Described the first service signal and described the 3rd service signal are carried out vector analysis, obtain Error Vector Magnitude (Error Vector Magnitude the is called for short EVM) value of described the first service signal and the 3rd service signal;
Detect the signal quality of described radio frequency unit according to a plurality of described EVM values in a period of time.
A kind of checkout gear of radio frequency unit signal quality of base station, described device comprises:
Receiving element is for the first service signal of the base-band digital processing unit transmission that receives described base station;
The first acquiring unit, be used for described radio frequency unit described the first service signal is processed obtain the second service signal after, by the backward channel that is arranged in the described radio frequency unit described the second service signal is processed, obtain the 3rd service signal;
The vector analysis unit is used for described the first service signal and described the 3rd service signal are carried out vector analysis, obtains the Error Vector Magnitude EVM value of described the first service signal and the 3rd service signal;
Detecting unit is used for detecting described radio frequency unit signal quality according to a plurality of described EVM value in a period of time.
Detection method and the device of the radio frequency unit signal quality of the base station that the embodiment of the invention provides, the first service signal that sends by the base-band digital processing unit that receives described base station, and described radio frequency unit described the first service signal is processed obtain the second service signal after, by the backward channel that is arranged in the described radio frequency unit described the second service signal is processed, obtain the 3rd service signal, thereby obtain the Error Vector Magnitude EVM value of first service signal and the 3rd service signal by vector analysis, detect described radio frequency unit signal quality according to a plurality of described EVM values in a period of time, avoided judging directly by the wireless traffic index whether fault causes erroneous judgement to described radio frequency unit, avoided simultaneously separating described radio frequency unit to detect the problem of service interruption that causes, and omitted the process of separating, reduced the time of detecting described radio frequency unit.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The flow chart of the detection method of the radio frequency unit signal quality of the base station that Fig. 1 provides for one embodiment of the invention;
The flow chart of the detection method of the radio frequency unit signal quality of the base station that Fig. 2 provides for further embodiment of this invention;
The structural representation of the checkout gear of the radio frequency unit signal quality of the base station that Fig. 3 provides for one embodiment of the invention;
The structural representation of the checkout gear of the radio frequency unit signal quality of the base station that Fig. 4 provides for further embodiment of this invention;
The application scenarios schematic diagram of the checkout gear of the radio frequency unit signal quality of the base station that Fig. 5 provides for the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
For the advantage that makes technical solution of the present invention is clearer, below in conjunction with drawings and Examples the present invention is elaborated.
As shown in Figure 1, the detection method of the radio frequency unit signal quality of the base station that present embodiment provides, described base station comprises base-band digital processing unit and radio frequency unit.
Optionally, described base station can be global system for mobile communications (Global System For Mobile Communications, abbreviation GSM), universal mobile telecommunications system (Universal Mobile Telecommunications System, be called for short UTMS) or global microwave internet access system (Worldwide Interoperability For Microwave Access, be called for short WIMAX) etc. with the base station of radio frequency unit, but not only be confined to this.
Described method comprises:
The first service signal that the base-band digital processing unit of step 101, the described base station of reception sends.
Optionally, described the first service signal is the partial service data of described base station when real work, such as the note data by described base station etc., but not only is confined to this.
Concrete, described backward channel produces described the 3rd service signal after described the second service signal is carried out digital-to-analogue conversion.Optionally, described the first service signal locates to enter described radio frequency unit from the common public radio interface (Common Public Radio Interface, CPRI) of radio frequency unit, and described the 3rd service signal turns back to described CPRI place.
Wherein, described EVM value is the index of described the 3rd service signal of reflection and described the first service signal error in the present embodiment.
Wherein, described radio frequency unit signal quality is the quality of the signal after described radio frequency unit conversion.
Optionally, within a period of time, by obtaining a plurality of the first service signals, and acquire corresponding a plurality of the 3rd service signals, adopt the mode of step 103 to obtain a plurality of EVM values, can be according to the quality threshold that sets in advance, compare with the average of described a plurality of EVM values, when the average of described EVM value is lower than described quality threshold, determine described radio frequency unit fault.
The detection method of the radio frequency unit signal quality of the base station that the embodiment of the invention provides, the first service signal that sends by the base-band digital processing unit that receives described base station, and the radio frequency unit of described base station described the first service signal is processed obtain the second service signal after, by the backward channel that is arranged in the described radio frequency unit described the second service signal is processed, obtain the 3rd service signal, thereby obtain the Error Vector Magnitude EVM value of the first service signal and the 3rd service signal by vector analysis, detect described radio frequency unit signal quality according to a plurality of described EVM values in a period of time, avoided directly judging whether fault of described radio frequency unit by the wireless traffic index, when being arranged, external disturbance causes easily erroneous judgement, avoided simultaneously separating described radio frequency unit to detect the problem of service interruption that causes, and omitted the process of separating, reduced the time of detecting described radio frequency unit.
For the advantage that makes technical solution of the present invention is clearer, the below enumerates a specific embodiment the present invention is elaborated.
As shown in Figure 2, the detection method of the radio frequency unit signal quality of the base station that further embodiment of this invention provides, described base station comprises base-band digital processing unit and radio frequency unit, described method comprises:
Optionally, the partial service data that described the first service signal can be described base station, such as: note data by described base station etc., but not only be confined to this.
The signal strength signal intensity that step 202, basis set in advance, when the signal strength signal intensity of described the first service signal is higher than the described signal strength signal intensity that sets in advance, obtain described the first service signal, and make described the first service signal be converted to the radiofrequency signal that meets communications protocol through described radio frequency unit.
Because in the signal strength signal intensity of described the first service signal hour, may cause the radio frequency unit signal quality in later stage to detect inaccurate, therefore adopt step 201 to step 202, in the signal strength signal intensity of described the first service signal during less than the signal strength signal intensity that sets in advance, described the first service signal is not carried out index measurement or abandons measurement result, strengthened like this reliability that detects.Optionally, also can not carry out step 201 and directly carry out step 203 to step 202.
Concrete, described backward channel produces described the 3rd service signal after described the second service signal is carried out digital-to-analogue conversion.Optionally, described the first service signal enters described radio frequency unit from the CPRI of radio frequency unit, and described the 3rd service signal turns back to described CPRI place.
The quality threshold that step 205, basis set in advance is if the mean value of a plurality of described EVM values is then judged described radio frequency unit fault less than the described quality threshold that sets in advance in described a period of time.Execution in step 206 or step 207.
Concrete, within a period of time, by obtaining a plurality of the first service signals, and acquire corresponding a plurality of the 3rd service signals, adopt the mode of step 204 to obtain a plurality of EVM values, can be according to the quality threshold that sets in advance, compare with the average of described a plurality of EVM values, when the average of described EVM value is lower than described quality threshold, judge described radio frequency unit fault, perhaps when the saltus step of described a plurality of EVM values is larger, judges described radio frequency unit fault, but not only be confined to this.
Optionally, described fault resolution policy comprises: reduce the volume of business limit of described radio frequency unit or suspend the work of described radio frequency unit or the work of the radio frequency unit that breaks down is switched to upper at least a of the radio frequency unit of Hot Spare in advance.The volume of business limit of the described radio frequency unit of described reduction is in order to reduce the live load of described radio frequency unit; Owing to when described radio frequency unit is worked, may cause that radio frequency unit damages, and therefore can adopt the work that suspends described radio frequency unit under fault; In order to guarantee the normal operation of described base station, set in advance the radio frequency unit of Hot Spare in the described base station, therefore can adopt the work of the radio frequency unit that will break down to switch on the radio frequency unit of Hot Spare in advance, but not only be confined to this.
Optionally, after judging described radio frequency unit fault, for so that the external maintenance personnel can learn described radio frequency unit fault immediately, can send alarm signal, for example by chimes of doom, alarm lamp etc., but not only be confined to this.
The detection method of the radio frequency unit signal quality of the base station that present embodiment provides, the first service signal that sends by the base-band digital processing unit that receives described base station, and described radio frequency unit described the first service signal is processed obtain the second service signal after, by the backward channel that is arranged in the described radio frequency unit described the second service signal is processed, obtain the 3rd service signal, thereby obtain the Error Vector Magnitude EVM value of first service signal and the 3rd service signal by vector analysis, detect described radio frequency unit signal quality according to a plurality of described EVM values in a period of time, avoided directly judging whether fault of described radio frequency unit by the wireless traffic index, owing to there is external disturbance to cause easily erroneous judgement, avoided simultaneously separating described radio frequency unit to detect the problem of service interruption that causes, and omitted the process of separating, reduced the time of detecting described radio frequency unit.
As shown in Figure 3, the checkout gear of the radio frequency unit signal quality of the base station that present embodiment provides, described device comprises:
Receiving element 31 is for the first service signal of the base-band digital processing unit transmission that receives described base station.Its specific implementation repeats no more referring among Fig. 1 shown in the step 101 herein.
The first acquiring unit 32, be used for described radio frequency unit described the first service signal is processed obtain the second service signal after, by the backward channel that is arranged in the described radio frequency unit described the second service signal is processed, obtain the 3rd service signal.
Wherein, described the first service signal enters described radio frequency unit from the CPRI of radio frequency unit, described backward channel is arranged in the described radio frequency unit, be used at described radio frequency unit described the first service signal being processed, and after producing the second service signal, after described the second service signal can being carried out digital-to-analogue conversion, produce the 3rd service signal, and then described the 3rd service signal is turned back to described CPRI place.Its specific implementation repeats no more referring among Fig. 1 shown in the step 102 herein.
Detecting unit 34 is used for detecting described radio frequency unit signal quality according to a plurality of described EVM values in a period of time.Its specific implementation repeats no more referring among Fig. 1 shown in the step 104 herein.
Further, as shown in Figure 4, described device also comprises:
Signal electing unit 36 is used for choosing described the first service signal that signal strength signal intensity is higher than the described signal strength signal intensity that sets in advance according to the signal strength signal intensity that sets in advance.Described receiving element 31 is also for described the first service signal that receives described signal electing unit selection.Its specific implementation repeats no more referring among Fig. 2 shown in the step 202 herein.
Further, as shown in Figure 4, described detecting unit 34 specifically is used for:
According to the quality threshold that sets in advance, if the mean value of a plurality of described EVM values is then judged described radio frequency unit fault less than the described quality threshold that sets in advance in described a period of time.Its specific implementation repeats no more referring among Fig. 2 shown in the step 205 herein.
Further, as shown in Figure 4, described device also comprises:
Further, as shown in Figure 4, described device also comprises:
The application outdoor scene of the checkout gear of the radio frequency unit signal quality of the base station that provides for the embodiment of the invention such as Fig. 5, described base station comprises the antenna-feedback system 41 that transmits for the community user under described base station, above-mentioned base-band digital processing unit 42 and radio frequency unit 43.Optionally, the checkout gear 44 of the radio frequency unit signal quality of described base station is arranged on the interface of described radio frequency unit 43 and described base-band digital processing unit 42, but not only is confined to this.
The checkout gear of the radio frequency unit signal quality of the base station that present embodiment provides, receive the first service signal that the base-band digital processing unit sends by described receiving element, described the first acquiring unit described radio frequency unit described the first service signal is processed obtain the second service signal after, by the backward channel that is arranged in the described radio frequency unit described the second service signal is processed, obtain the 3rd service signal, thereby obtain an Error Vector Magnitude EVM value by the vector analysis unit, and detect described radio frequency unit signal quality by detecting unit according to a plurality of described EVM values in a period of time, avoided directly judging whether fault of described radio frequency unit by the wireless traffic index, when being arranged, external disturbance causes erroneous judgement, avoid simultaneously separating described radio frequency unit to detect the problem of service interruption that causes, and omitted the process of separating, reduced the time of detecting described radio frequency unit.
Through the above description of the embodiments, the those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential common hardware, can certainly pass through hardware, but the former is better execution mode in a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium that can read, floppy disk such as computer, hard disk or CD etc., comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
The above; be the specific embodiment of the present invention only, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by described protection range with claim.
Claims (10)
1. the detection method of the radio frequency unit signal quality of a base station is characterized in that, described method comprises:
Receive the first service signal of the base-band digital processing unit transmission of described base station;
Described radio frequency unit to described the first service signal process obtain the second service signal after, by the backward channel that is arranged in the described radio frequency unit described the second service signal is processed, obtain the 3rd service signal;
Described the first service signal and described the 3rd service signal are carried out vector analysis, obtain the Error Vector Magnitude EVM value of described the first service signal and the 3rd service signal;
Detect the signal quality of described radio frequency unit according to a plurality of described EVM values in a period of time.
2. method according to claim 1 is characterized in that, the first service signal that the base-band digital processing unit of the described base station of described reception sends comprises:
Obtain the signal strength signal intensity of described first service signal of described base-band digital processing unit transmission;
According to the signal strength signal intensity that sets in advance, when the signal strength signal intensity of described the first service signal is higher than the described signal strength signal intensity that sets in advance, receive described the first service signal.
3. method according to claim 1 is characterized in that, described signal quality according to the described radio frequency unit of a plurality of described EVM values detections in a period of time comprises:
According to the quality threshold that sets in advance, if the mean value of a plurality of described EVM values is then judged described radio frequency unit fault less than the described quality threshold that sets in advance in described a period of time.
4. method according to claim 3 is characterized in that, after the described radio frequency unit fault of described judgement, described method also comprises:
Described radio frequency unit is carried out the fault resolution policy automatically, and described fault resolution policy comprises: automatically reduce the volume of business limit of described radio frequency unit or suspend the work of described radio frequency unit or the work of the radio frequency unit that breaks down is switched to upper at least a of the radio frequency unit of Hot Spare in advance.
5. method according to claim 3 is characterized in that, after the described radio frequency unit fault of described judgement, described method also comprises:
Send alarm signal, notify described radio frequency unit fault.
6. the checkout gear of the radio frequency unit signal quality of a base station is characterized in that, described device comprises:
Receiving element is for the first service signal of the base-band digital processing unit transmission that receives described base station;
The first acquiring unit, be used for described radio frequency unit described the first service signal is processed obtain the second service signal after, by the backward channel that is arranged in the described radio frequency unit described the second service signal is processed, obtain the 3rd service signal;
The vector analysis unit is used for described the first service signal and described the 3rd service signal are carried out vector analysis, obtains the Error Vector Magnitude EVM value of described the first service signal and the 3rd service signal;
Detecting unit is used for detecting described radio frequency unit signal quality according to a plurality of described EVM value in a period of time.
7. device according to claim 6 is characterized in that, described device also comprises:
Second acquisition unit is for the signal strength signal intensity of described the first service signal that obtains described base-band digital processing unit transmission;
The signal electing unit is used for choosing described the first service signal that signal strength signal intensity is higher than the described signal strength signal intensity that sets in advance according to the signal strength signal intensity that sets in advance;
Described receiving element is also for described the first service signal that receives described signal electing unit selection.
8. device according to claim 6 is characterized in that, described detecting unit specifically is used for:
According to the quality threshold that sets in advance, if the mean value of a plurality of described EVM values is then judged described radio frequency unit fault less than the described quality threshold that sets in advance in described a period of time.
9. device according to claim 8 is characterized in that, described device also comprises:
Fault processing unit, be used for described radio frequency unit is carried out the fault resolution policy automatically, described fault resolution policy comprises: automatically reduce the volume of business limit of described radio frequency unit or suspend the work of described radio frequency unit or the work of the radio frequency unit that breaks down is switched to upper at least a of the radio frequency unit of Hot Spare in advance.
10. device according to claim 8 is characterized in that, described device also comprises:
Alarm unit is used for sending alarm signal, notifies described radio frequency unit fault.
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| CN103379532B (en) | 2016-03-02 |
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