CN103139817B - The method and device of diagnosing base station channel failure - Google Patents
The method and device of diagnosing base station channel failure Download PDFInfo
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- CN103139817B CN103139817B CN201110396041.3A CN201110396041A CN103139817B CN 103139817 B CN103139817 B CN 103139817B CN 201110396041 A CN201110396041 A CN 201110396041A CN 103139817 B CN103139817 B CN 103139817B
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Abstract
The invention discloses the method for diagnosing base station channel failure, including：The baseband signal that Base Band Unit BBU is sent is received, the baseband signal is converted into downstream signal, and power calculation is carried out to the downstream signal, downstream signal performance number is obtained；The downstream signal is launched, the transmission signal performance number of transmission channel is measured, and calculates the forward signal power value that the downstream signal feeds back to sense channel；The transmission signal performance number and forward signal power value are subjected to mathematic interpolation with the downstream signal performance number respectively, and judge whether the transmission channel and sense channel break down respectively according to obtained difference.Present invention also offers corresponding device.The method of diagnosing base station channel failure provided by the present invention, the link that base station passage breaks down can be judged in power detection, so that it is determined that the abnormal cause of power detection so that the positioning to power detection failure is relatively simple, and reduce the numerous and diverse degree of the work of operating personnel.
Description
Technical field
The present invention relates to field of wireless communications systems, the method and dress of a kind of diagnosing base station channel failure are related specifically to
Put.
Background technology
At present, in TDD wireless communication systems, using including RRU (Radio Remote Unit, Remote Radio Unit)
With BBU (Base BandUnit, Base Band Unit) distributed base station.RRU array channels are generally divided into single channel or many in base
Two kinds of configurations of passage, are respectively used to in-door covering and outdoor macro station.RRU array channels include：The transceiver of high frequency or intermediate frequency,
Radio frequency amplifier device (power amplifier and low-noise amplifier etc.), feed cable and outdoor unit.For in actual motion
Base station, it is desirable to can be periodically detected to the power that each transmission channel is launched, for use in monitor channel output work
The accuracy of rate, so as to ensure the performance and wireless index of base station.
The method that existing frequently-used RRU array channels carry out power detection has two kinds：A kind of is the downstream signal work(with BBU
Rate is detection power, and obtains the forward signal power of detected sense channel, by downstream signal power and forward signal
Power is compared, to judge whether sense channel breaks down；Another is utilized in the spontaneous test data of Gp time slots, inspection
The data power of Gp time slots is surveyed, and obtains the forward signal power of sense channel corresponding time slot, during by forward signal power and Gp
The data power of gap is compared, to judge whether sense channel breaks down.But, when the antenna opening inspection for finding power detection
When the power measured is abnormal, the power output of RRU antenna openings can only be measured with instrument, can not be in RRU transmission channels
The link gone wrong in portion is positioned, now, can not such as investigate the link broken down in power detection, determines that power is examined
The reason for surveying abnormal, then can make it that the positioning to power detection failure is complex, and it is numerous to add the work of operating personnel
Miscellaneous degree.
The content of the invention
The main object of the present invention, can be in power detection to provide a kind of method and device of diagnosing base station channel failure
When judge base station passage break down link, so that it is determined that the abnormal cause of power detection so as to power detection failure
Positioning is relatively simple, and reduces the numerous and diverse degree of the work of operating personnel.
The present invention provides a kind of method of diagnosing base station channel failure, including：
The baseband signal that Base Band Unit BBU is sent is received, the baseband signal is converted into downstream signal, and under described
Row signal carries out power calculation, obtains downstream signal performance number；
The downstream signal is launched, the transmission signal performance number of transmission channel is measured, and calculates the descending letter
Number feed back to the forward signal power value of sense channel；
The transmission signal performance number and forward signal power value are subjected to difference with the downstream signal performance number respectively
Calculate, and judge whether the transmission channel and sense channel break down respectively according to obtained difference.
Preferably, downstream signal is converted to performing described by baseband signal, and power meter is carried out to the downstream signal
Calculate, after obtaining downstream signal performance number, in addition to：
By the downstream signal performance number and the base that the baseband signal that obtained BBU is sent is calculated according to community configured information
Band performance number is compared, to determine the accuracy of the downstream signal performance number.
Preferably, it is described to be launched downstream signal, the transmission signal performance number of transmission channel is measured, and calculate described
The forward signal power value that downstream signal feeds back to sense channel includes：
The downstream signal is launched by transmission channel and exterior antenna mouthful, and instrument is used at the antenna opening
Table is measured, and obtains transmission signal performance number；
When the downstream signal is after switch control feeds back to sense channel, according to the ginseng of the downstream signal preserved
Number, calculating obtains forward signal power value.
Preferably, it is described to enter transmission signal performance number and forward signal power value with the downstream signal performance number respectively
Row mathematic interpolation, and judge whether the transmission channel and sense channel break down specific bag respectively according to obtained difference
Include：
The transmission signal performance number and the downstream signal performance number are subjected to mathematic interpolation and obtain transmission channel reality
Gain, and by the transmission channel actual gain with calculating the progress pair of obtained transmission channel nominal gain according to calibrating parameters
Than to judge whether transmission channel breaks down；
The forward signal power value and the downstream signal performance number are subjected to mathematic interpolation and obtain sense channel reality
Gain, and by the sense channel actual gain with calculating the progress pair of obtained sense channel nominal gain according to calibrating parameters
Than to judge whether sense channel breaks down.
Preferably, perform it is described downstream signal is launched before, in addition to：
A passage is selected in down going channel as transmission channel, and the time slot of the selected transmitting downstream signal.
The present invention also provides a kind of device of diagnosing base station channel failure, including：
Receiving module, the baseband signal for receiving Base Band Unit BBU transmissions, descending letter is converted to by the baseband signal
Number, and power calculation is carried out to the downstream signal, obtain downstream signal performance number；
Transmitter module, for the downstream signal to be launched, measures the transmission signal performance number of transmission channel, and count
Calculate the forward signal power value that the downstream signal feeds back to sense channel；
Judge module, for by the transmission signal performance number and forward signal power value respectively with the downstream signal work(
Rate value carries out mathematic interpolation, and judges whether the transmission channel and sense channel break down respectively according to obtained difference.
Preferably, the device of diagnosing base station channel failure also includes：
Comparison module, for the downstream signal performance number to be sent with calculating obtained BBU according to community configured information
The base band power value of baseband signal be compared, to determine the accuracy of the downstream signal performance number.
Preferably, the transmitter module includes：
Measuring unit, for the downstream signal to be launched by transmission channel and exterior antenna mouthful, and in institute
State at antenna opening and to be measured with instrument, obtain transmission signal performance number；
Computing unit, for when the downstream signal is after switch control feeds back to sense channel, according to what is preserved
The parameter of downstream signal, calculating obtains forward signal power value.
Preferably, the judge module includes：
First comparison unit, for the transmission signal performance number and the downstream signal performance number to be carried out into mathematic interpolation
Transmission channel actual gain is obtained, and by the transmission channel actual gain with calculating obtained transmission channel according to calibrating parameters
Nominal gain is contrasted, to judge whether transmission channel breaks down；
Second comparison unit, for the forward signal power value and the downstream signal performance number to be carried out into mathematic interpolation
Sense channel actual gain is obtained, and by the sense channel actual gain with calculating obtained sense channel according to calibrating parameters
Nominal gain is contrasted, to judge whether sense channel breaks down.
Preferably, the device of diagnosing base station channel failure also includes：
Selecting module, for selecting a passage in down going channel as transmission channel, and selected transmitting is described descending
The time slot of signal.
Downstream signal of the invention by the way that the baseband signal transmitted by Base Band Unit BBU to be converted to RRU normal works, and
Using the downstream signal as detection signal, the power of the detection signal in transmission channel and sense channel is detected, is entered with this
The diagnosis of row RRU channel failures.First, the downstream signal performance number to downstream signal is calculated, and then leads to downstream signal
The down going channel for crossing RRU is launched, and obtains transmission signal performance number and forward signal power value by measurement and calculating.
Transmission channel actual gain and sense channel actual gain are respectively obtained by transmission signal performance number and forward signal power value,
And be compared respectively with the nominal gains of RRU passages so that whether the deviation for judging passage actual gain and corridorbarrier function gain surpasses
Default threshold value is crossed, so as to judge whether transmission channel or sense channel break down.In this way, Ke Yi
The link that base station passage breaks down is judged during power detection, so that it is determined that the abnormal cause of power detection so that power is examined
The positioning for surveying failure is relatively simple, and reduces the numerous and diverse degree of the work of operating personnel.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the embodiment of method one of diagnosing base station channel failure of the present invention；
Fig. 2 is the schematic flow sheet launched in Fig. 1；
Fig. 3 is the schematic flow sheet that judges in Fig. 1；
Fig. 4 is the schematic flow sheet of the another embodiment of method of diagnosing base station channel failure of the present invention；
Fig. 5 is the schematic flow sheet of the method another embodiment of diagnosing base station channel failure of the present invention；
Fig. 6 is the structural representation of the embodiment of device one of diagnosing base station channel failure of the present invention；
Fig. 7 is the structural representation of transmitter module in Fig. 6；
Fig. 8 is the structural representation of judge module in Fig. 6；
Fig. 9 is the structural representation of the another embodiment of device of diagnosing base station channel failure of the present invention；
Figure 10 is the structural representation of the device another embodiment of diagnosing base station channel failure of the present invention.
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The present invention provides a kind of method of diagnosing base station channel failure.In distributed base station system, Base Band Unit BBU with
Radio frequency remote unit RRU is connected, and RRU receives the baseband signal transmitted by BBU and is converted to the downstream signal of normal work, and
Using the downstream signal as detection signal, by detecting the power of the detection signal in transmission channel and sense channel, to enter
The diagnosis of row RRU channel failures.The RRU passages provided include control panel, multi-channel transceiver, power output sense channel,
Power amplifier and wave filter.The conversions of optical fiber and data, base band-intermediate frequency conversion (including up-conversion are controlled by control panel
With down coversion conversion) and the function such as the calibration of power；The transmission of downstream signal is carried out by sender, downstream signal is passed through hair
Passage is penetrated, and passes through power amplifier and filter process, is finally gone out by exterior antenna port transmission；Receiver is then used for receiving
The downstream signal fed back by power output sense channel.
Reference picture 1, proposes the embodiment of method one of diagnosing base station channel failure of the present invention, and this method includes：
Step S101, receives the baseband signal that Base Band Unit BBU is sent, the baseband signal is converted into downstream signal,
And power calculation is carried out to the downstream signal, obtain downstream signal performance number；
When distributed base station is run in commercial network, Base Band Unit BBU is connected with radio frequency remote unit RRU, BBU
Baseband signal is sent to RRU, RRU sides are converted to the baseband signal downstream signal of normal work, and by the downstream signal
Transmit to user terminal.In the present embodiment, it can be examined using downstream signal as detection signal with the failure for carrying out RRU passages
It is disconnected., it is necessary to pass it through frequency up-converted after the baseband signal transmitted by BBU is received, that is, downstream signal is converted to, so
Data when afterwards, by capturing a certain time slot in the downstream signal, and calculated according to these data, it just can obtain descending letter
Number downstream signal performance number, the downstream signal performance number can be designated as P_IQ_BB_Tx [n].
Step S102, the downstream signal is launched, and measures the transmission signal performance number of transmission channel, and calculates institute
State the forward signal power value that downstream signal feeds back to sense channel；
When the baseband signal transmitted by the BBU received is converted to downstream signal by RRU, and obtained by calculating under this
After the downstream signal performance number of row signal, the sender in RRU down going channels just can be utilized by received downstream signal
Launched, and downstream signal is gone out by exterior antenna port transmission, at this time, it may be necessary to export transmission channel to the downstream signal
When power output measure, it is just transmission signal performance number to measure obtained performance number.Meanwhile, when downstream signal transmit to
After wave filter, by switching the downstream signal can be controlled to carry out feeding back to sense channel, and downstream signal is converted into numeral
Signal, is received the data signal as control panel and the power detection value corresponding to calculating it, and this power detection value is
Pass through the forward signal power value of sense channel for downstream signal.
Step S103, by the transmission signal performance number and forward signal power value respectively with the downstream signal performance number
Mathematic interpolation is carried out, and judges whether the transmission channel and sense channel break down respectively according to obtained difference.
After transmission signal performance number and forward signal power value is obtained by measurement and calculating, by transmission signal performance number
Subtract each other respectively with downstream signal performance number with forward signal power value, just can respectively obtain a difference, this difference is
The actual gain of passage, i.e. transmission channel actual gain and sense channel actual gain.The demarcation of write-in is produced according to RRU passages
Parameter is calculated, and can obtain RRU corridorbarrier function gains, then, by passage actual gain and corridorbarrier function gain progress pair
Than at this time, it may be necessary to a threshold value be preset, when transmission channel actual gain or sense channel actual gain and corridorbarrier function gain
Difference exceed this threshold value when, just may determine that transmission channel or sense channel occur in that failure.
The embodiment of the present invention, by the way that the baseband signal transmitted by Base Band Unit BBU is converted into the descending of RRU normal works
Signal, and using the downstream signal as detection signal, the power of the detection signal in transmission channel and sense channel is detected, with
This carries out the diagnosis of RRU channel failures.First, the downstream signal performance number to downstream signal is calculated, then will be descending
Signal is launched by RRU down going channel, and obtains transmission signal performance number and forward signal by measurement and calculating
Performance number.Transmission channel actual gain is respectively obtained by transmission signal performance number and forward signal power value and sense channel is real
Border gain, and be compared to judge whether transmission channel or sense channel break down with RRU corridorbarrier function gains respectively.Adopt
In this way, the link that base station passage breaks down can be judged in power detection, so that it is determined that the exception of power detection
Reason so that the positioning to power detection failure is relatively simple, and reduce the numerous and diverse degree of the work of operating personnel.
Reference picture 2, in the embodiment of method one of diagnosing base station channel failure of the present invention, step S102 further comprises：
Step S1021, the downstream signal is launched by transmission channel and exterior antenna mouthful, and in the day
Measured at line mouthful with instrument, obtain transmission signal performance number；
After the received BBU baseband signals sent are converted to downstream signal by RRU, the downstream signal is used for RRU
Normal work, then, downstream signal is launched by down going channel, now the passage for launching downstream signal is just
Transmission channel, power amplifier and filter process that downstream signal passes through in transmission channel, sends out eventually through exterior antenna mouthful
It is shot out.At this moment, it is necessary to measure the power output of downstream signal in antenna opening, it can be measured using power measurement instrumentation,
It is transmission signal performance number to measure obtained performance number, and the transmission signal performance number can be designated as to P_Ant_Pwr [n].
Step S1022, it is descending according to what is preserved when the downstream signal is after switch control feeds back to sense channel
The parameter of signal, calculating obtains forward signal power value.
, can be by the controlling switch pair that is connected with wave filter when downstream signal is transmitted in transmission channel to wave filter
Downstream signal is controlled, even if it feeds back to sense channel, is connect downstream signal by the receiver in sense channel
Receive, then downstream signal is mixed, analog-to-digital conversion and down coversion are changed, you can downstream signal is converted into digital letter
Number.The data signal is received by control panel, and according to the data cached of the baseband signal preserved, to the numeral
Performance number corresponding to signal is calculated, now, and resulting performance number is that downstream signal is fed back by sense channel
The forward signal power value, can be designated as P_IQ_Det_Tx [n] by forward signal power value afterwards.
To downstream signal the power output of transmission channel and its measured respectively by the detection power of sense channel
And calculating, i.e., transmission signal performance number is measured in antenna opening by instrument, and pass through the data cached of preserved baseband signal
The forward signal power value corresponding to it is calculated, when needing to carry out power detection to RRU, just can pass through transmission signal power
Value and forward signal power value, are detected accordingly respectively, when detecting transmission signal performance number or forward signal power value
When occurring abnormal, it is possible to judge that corresponding transmission channel or sense channel break down.So, just it may further ensure that
The judgement of the link broken down during power detection to base station passage, and it is numerous and diverse to further reduce the work of operating personnel
Degree.
In RRU, it is possible to there is a situation where that multiple down going channels share a sense channel, such as in 8 passage RRU,
Typically preceding 4 passage shares same sense channel, and rear 4 passage shares a sense channel.In this case, because RRU is whole
Machine is finished after open-loop calibration, and the gain of passage is all adjusted to identical down target gain, so, when public sense channel goes out
During existing failure, the forward signal power of detected corresponding 4 down going channels will be forbidden, according to 4 down going channels
Forward signal power is it may determine that go out whether sense channel breaks down.When the configuration power of 4 down going channels is identical, respectively
The forward signal power of down going channel is also essentially identical, if the forward power of one of down going channel and other three passages
Forward signal power deviation it is excessive, it is possible to primitive decision this down going channel breaks down.
Reference picture 3, in the embodiment of method one of diagnosing base station channel failure of the present invention, step S103 further comprises：
Step S1031, carries out mathematic interpolation by the transmission signal performance number and the downstream signal performance number and is sent out
Passage actual gain is penetrated, and the transmission channel actual gain is increased with calculating obtained transmission channel according to calibrating parameters and demarcating
Benefit is contrasted, to judge whether transmission channel breaks down；
After transmission signal performance number P_Ant_Pwr [n] is detected by power detection instrument in antenna opening, just it can count
Transmission channel actual gain is calculated, transmission channel actual gain can be designated as to G_Tx [n], the method for calculating is by transmission signal work(
Rate value is subtracted each other with downstream signal performance number, that is, passes through equation below：G_Tx [n]=P_Ant_Pwr [n]-P_IQ_BB_Tx [n].
After transmission channel actual gain G_Tx [n] is obtained by formula, the calibrating parameters that write-in is just produced according to RRU passages are calculated
The corridorbarrier function gain, is then contrasted G_Tx [n] with corridorbarrier function gain, judges G_Tx [n] and corridorbarrier function gain
Difference whether exceed default threshold value, such as exceed, then can be determined that transmission channel break down.
Step S1032, carries out mathematic interpolation by the forward signal power value and the downstream signal performance number and is examined
Passage actual gain is surveyed, and the sense channel actual gain is increased with calculating obtained sense channel according to calibrating parameters and demarcating
Benefit is contrasted, to judge whether sense channel breaks down.
When obtaining forward signal power value P_IQ_Det_Tx [n] according to the data cached calculating of the baseband signal preserved
Afterwards, sense channel actual gain just can be calculated, sense channel actual gain can be designated as to G_Det_Tx [n], the side of calculating
Method passes through equation below for downstream signal performance number is subtracted each other with forward signal power value：G_Det_Tx [n]=P_IQ_
Det_Tx[n]-P_Ant_Pwr[n].After sense channel actual gain G_Det_Tx [n] is obtained by formula, by G_Det_Tx
[n] is contrasted with corridorbarrier function gain, judges whether G_Det_Tx [n] and the difference of corridorbarrier function gain exceed default door
Limit value, such as exceedes, then can be determined that sense channel breaks down.
The forward signal power value obtained by the transmission signal performance number obtained by measuring and by calculating is respectively with
Row signal power value carries out mathematic interpolation, so that transmission channel actual gain and sense channel actual gain are obtained, then by root
The corridorbarrier function gain that the calibrating parameters for producing write-in according to RRU passages are calculated and obtained passage actual gain progress pair
Than judging whether the difference between corridorbarrier function gain and passage actual gain exceeds default threshold value, so as to just can determine that
It is that transmission channel or sense channel occur in that failure.So, just further such that the positioning to power detection failure is more simple
It is single, and can easily determine the abnormal cause of power detection.
Reference picture 4, proposes the another embodiment of method of diagnosing base station channel failure of the present invention, and this method also includes：
Step S104, by the downstream signal performance number with calculating the base that obtained BBU is sent according to community configured information
The base band power value of band signal is compared, to determine the accuracy of the downstream signal performance number.
When the baseband signal transmitted by the BBU received is converted to downstream signal by RRU, and according to certain captured for the moment
Data during gap in downstream signal are calculated and obtained after downstream signal performance number P_IQ_BB_Tx [n], according to matching somebody with somebody for cell
Confidence ceases, and calculates the base band power value for the baseband signal that BBU is sent, and downstream signal performance number and the base band power value are carried out
Compare, to judge whether downstream signal performance number is consistent with base band power value.As unanimously, then illustrated what is obtained according to downstream signal
Downstream signal performance number is accurate, can be launched the downstream signal；It is such as inconsistent, under normal conditions, also can only
Illustrate different with the computational methods of base band power value to downstream signal performance number, downstream signal work(can not be judged with this
Rate value is inaccurate, that is to say, that can equally be launched downstream signal.
The downstream signal obtained by RRU progress frequency up-converted is subjected to power calculation and downstream signal performance number is obtained
Afterwards, by the downstream signal performance number and the base band work(that the baseband signal that obtained BBU is sent is calculated according to the configuration information of cell
Rate value is compared, to determine whether downstream signal performance number is accurate, such as accurate, then is launched downstream signal.So, exist
Largely, it is ensured that the power output of resulting downstream signal and the accuracy of detection power, so as to logical
The detection of road failure has higher success rate.
Reference picture 5, proposes the method another embodiment of diagnosing base station channel failure of the present invention, and this method also includes：
Step S105, selects a passage as transmission channel in down going channel, and the selected transmitting downstream signal
Time slot.
When the baseband signal transmitted by BBU is converted to downstream signal by RRU, and need the descending letter by down going channel
When number being launched, in RRU down going channel a passage can be selected to be used as transmission channel.It is also desirable to selected hair
The time slot of downstream signal is penetrated, in the present embodiment, RRU main carrier TSO time slots or descending pilot frequency time slot DWPTS can be selected,
Other lower industry bar time slots, because business is uncertain, and power output is non-constant, therefore, is not suitable as power detection
Time slot.
A down going channel is selected in RRU down going channel as the transmission channel of downstream signal, and by downstream signal
Launched；Meanwhile, select the time slot of RRU main carrier TSO time slots or descending pilot frequency time slot DWPTS for transmitting downstream signal.Can
So that the power detection to downstream signal becomes apparent, simply, and due to the downstream signal power output of selected time slot
It is relatively stable, further ensure the accuracy that power detection is carried out to detection signal.
Reference picture 6, proposes the embodiment of device one of diagnosing base station channel failure of the present invention, and the device includes：
Receiving module 10, the baseband signal for receiving Base Band Unit BBU transmissions, the baseband signal is converted to descending
Signal, and power calculation is carried out to the downstream signal, obtain downstream signal performance number；
Transmitter module 20, for the downstream signal to be launched, measures the transmission signal performance number of transmission channel, and
Calculate the forward signal power value that the downstream signal feeds back to sense channel；
Judge module 30, for by the transmission signal performance number and forward signal power value respectively with the downstream signal
Performance number carries out mathematic interpolation, and judges whether the transmission channel and sense channel event occur respectively according to obtained difference
Barrier.
When distributed base station is run in commercial network, Base Band Unit BBU is connected with radio frequency remote unit RRU, BBU
Baseband signal is sent to RRU, RRU sides are converted to the baseband signal downstream signal of normal work, and by the downstream signal
Transmit to user terminal.In the present embodiment, it can be examined using downstream signal as detection signal with the failure for carrying out RRU passages
It is disconnected., it is necessary to pass it through frequency up-converted after receiving module 10 receives the baseband signal transmitted by BBU, that is, be converted to down
Row signal, then, data during by capturing a certain time slot in the downstream signal, and calculated according to these data, just may be used
The downstream signal performance number of downstream signal is obtained, the downstream signal performance number can be designated as P_IQ_BB_Tx [n].
When the baseband signal transmitted by the BBU received is converted to downstream signal by RRU, and obtained by calculating under this
After the downstream signal performance number of row signal, transmitter module 20 just can utilize the sender in RRU down going channels will be received
Downstream signal launched, and downstream signal is gone out by exterior antenna port transmission, at this time, it may be necessary to defeated to the downstream signal
Power output when going out transmission channel is measured, and it is just transmission signal performance number to measure obtained performance number.Meanwhile, when descending
Signal is transmitted to wave filter, by switching the downstream signal can be controlled to carry out feeding back to sense channel, and by downstream signal
Data signal is converted to, is received the data signal as control panel and the power detection value corresponding to calculating it, this work(
Rate detected value is the forward signal power value that downstream signal passes through sense channel.
After transmission signal performance number and forward signal power value is obtained by measurement and calculating, by transmission signal performance number
Subtract each other respectively with downstream signal performance number with forward signal power value, just can respectively obtain a difference, this difference is
The actual gain of passage, i.e. transmission channel actual gain and sense channel actual gain.The demarcation of write-in is produced according to RRU passages
Parameter is calculated, and can obtain RRU corridorbarrier function gains, then, and judge module 30 is by passage actual gain and corridorbarrier function
Gain is contrasted, at this time, it may be necessary to preset a threshold value, when transmission channel actual gain or sense channel actual gain with it is logical
When the difference of road nominal gain exceedes this threshold value, it just may determine that transmission channel or sense channel occur in that failure.
The embodiment of the present invention, by the way that the baseband signal transmitted by Base Band Unit BBU is converted into the descending of RRU normal works
Signal, and using the downstream signal as detection signal, the power of the detection signal in transmission channel and sense channel is detected, with
This carries out the diagnosis of RRU channel failures.First, the downstream signal performance number to downstream signal is calculated, then will be descending
Signal is launched by RRU down going channel, and obtains transmission signal performance number and forward signal by measurement and calculating
Performance number.Transmission channel actual gain is respectively obtained by transmission signal performance number and forward signal power value and sense channel is real
Border gain, and be compared to judge whether transmission channel or sense channel break down with RRU corridorbarrier function gains respectively.Adopt
In this way, the link that base station passage breaks down can be judged in power detection, so that it is determined that the exception of power detection
Reason so that the positioning to power detection failure is relatively simple, and reduce the numerous and diverse degree of the work of operating personnel.
Reference picture 7, in the embodiment of device one of diagnosing base station channel failure of the present invention, transmitter module 20 is further wrapped
Include：
Measuring unit 21, for the downstream signal to be launched by transmission channel and exterior antenna mouthful, and
Measured at the antenna opening with instrument, obtain transmission signal performance number；
Computing unit 22, for when the downstream signal is after switch control feeds back to sense channel, according to being preserved
Downstream signal parameter, calculating obtain forward signal power value.
After the received BBU baseband signals sent are converted to downstream signal by RRU, the downstream signal is used for RRU
Normal work, then, downstream signal is launched by down going channel, now the passage for launching downstream signal is just
Transmission channel, power amplifier and filter process that downstream signal passes through in transmission channel, sends out eventually through exterior antenna mouthful
It is shot out.At this moment, measuring unit 21 needs to measure the power output of downstream signal in antenna opening, can use power measurement instrumentation
Measure, it is transmission signal performance number to measure obtained performance number, the transmission signal performance number can be designated as into P_Ant_
Pwr[n]。
, can be by the controlling switch pair that is connected with wave filter when downstream signal is transmitted in transmission channel to wave filter
Downstream signal is controlled, even if it feeds back to sense channel, is connect downstream signal by the receiver in sense channel
Receive, then downstream signal is mixed, analog-to-digital conversion and down coversion are changed, you can downstream signal is converted into digital letter
Number.The data signal is received by control panel, and computing unit 22 is according to the caching number of the baseband signal preserved
According to, the performance number corresponding to the data signal is calculated, now, resulting performance number be downstream signal pass through detection
Passage feed back after forward signal power value, the forward signal power value can be designated as to P_IQ_Det_Tx [n].
To downstream signal the power output of transmission channel and its measured respectively by the detection power of sense channel
And calculating, i.e., transmission signal performance number is measured in antenna opening by instrument, and pass through the data cached of preserved baseband signal
The forward signal power value corresponding to it is calculated, when needing to carry out power detection to RRU, just can pass through transmission signal power
Value and forward signal power value, are detected accordingly respectively, when detecting transmission signal performance number or forward signal power value
When occurring abnormal, it is possible to judge that corresponding transmission channel or sense channel break down.So, just it may further ensure that
The judgement of the link broken down during power detection to base station passage, and it is numerous and diverse to further reduce the work of operating personnel
Degree.
In RRU, it is possible to there is a situation where that multiple down going channels share a sense channel, such as in 8 passage RRU,
Typically preceding 4 passage shares same sense channel, and rear 4 passage shares a sense channel.In this case, because RRU is whole
Machine is finished after open-loop calibration, and the gain of passage is all adjusted to identical down target gain, so, when public sense channel goes out
During existing failure, the forward signal power of detected corresponding 4 down going channels will be forbidden, according to 4 down going channels
Forward signal power is it may determine that go out whether sense channel breaks down.When the configuration power of 4 down going channels is identical, respectively
The forward signal power of down going channel is also essentially identical, if the forward power of one of down going channel and other three passages
Forward signal power deviation it is excessive, it is possible to primitive decision this down going channel breaks down.
Reference picture 8, in the embodiment of device one of diagnosing base station channel failure of the present invention, judge module 30 includes：
First comparison unit 31, based on the transmission signal performance number and the downstream signal performance number are carried out into difference
Calculation obtains transmission channel actual gain, and the transmission channel actual gain is led to calculating obtained transmitting according to calibrating parameters
Road nominal gain is contrasted, to judge whether transmission channel breaks down；
Second comparison unit 32, based on the forward signal power value and the downstream signal performance number are carried out into difference
Calculation obtains sense channel actual gain, and the sense channel actual gain is led to calculating obtained detection according to calibrating parameters
Road nominal gain is contrasted, to judge whether sense channel breaks down.
After transmission signal performance number P_Ant_Pwr [n] is detected by power detection instrument in antenna opening, just it can count
Transmission channel actual gain is calculated, transmission channel actual gain can be designated as to G_Tx [n], the method for calculating is by transmission signal work(
Rate value is subtracted each other with downstream signal performance number, that is, passes through equation below：G_Tx [n]=P_Ant_Pwr [n]-P_IQ_BB_Tx [n].
After transmission channel actual gain G_Tx [n] is obtained by formula, the calibrating parameters that write-in is just produced according to RRU passages are calculated
The corridorbarrier function gain, then the first comparison unit 31 G_Tx [n] is contrasted with corridorbarrier function gain, judge G_Tx [n]
Whether exceed default threshold value with the difference of corridorbarrier function gain, such as exceed, then can be determined that transmission channel breaks down.
When obtaining forward signal power value P_IQ_Det_Tx [n] according to the data cached calculating of the baseband signal preserved
Afterwards, sense channel actual gain just can be calculated, sense channel actual gain can be designated as to G_Det_Tx [n], the side of calculating
Method passes through equation below for downstream signal performance number is subtracted each other with forward signal power value：G_Det_Tx [n]=P_IQ_
Det_Tx[n]-P_Ant_Pwr[n].After sense channel actual gain G_Det_Tx [n] is obtained by formula, the second contrast is single
Member 32 is contrasted G_Det_Tx [n] with corridorbarrier function gain, judges that G_Det_Tx [n] and the difference of corridorbarrier function gain are
It is no to exceed default threshold value, such as exceed, then can be determined that sense channel breaks down.
The forward signal power value obtained by the transmission signal performance number obtained by measuring and by calculating is respectively with
Row signal power value carries out mathematic interpolation, so that transmission channel actual gain and sense channel actual gain are obtained, then by root
The corridorbarrier function gain that the calibrating parameters for producing write-in according to RRU passages are calculated and obtained passage actual gain progress pair
Than judging whether the difference between corridorbarrier function gain and passage actual gain exceeds default threshold value, so as to just can determine that
It is that transmission channel or sense channel occur in that failure.So, just further such that the positioning to power detection failure is more simple
It is single, and can easily determine the abnormal cause of power detection.
Reference picture 9, proposes the another embodiment of device of diagnosing base station channel failure of the present invention, and the device also includes：
Comparison module 40, for the downstream signal performance number to be sent out with calculating obtained BBU according to community configured information
The base band power value for the baseband signal sent is compared, to determine the accuracy of the downstream signal performance number.
When the baseband signal transmitted by the BBU received is converted to downstream signal by RRU, and according to certain captured for the moment
Data during gap in downstream signal are calculated and obtained after downstream signal performance number P_IQ_BB_Tx [n], according to matching somebody with somebody for cell
Confidence ceases, and calculates the base band power value for the baseband signal that BBU is sent, and comparison module 40 is by downstream signal performance number and the base band work(
Rate value is compared, to judge whether downstream signal performance number is consistent with base band power value.As unanimously, then illustrated according to descending letter
Number obtained downstream signal performance number is accurate, can be launched the downstream signal；It is such as inconsistent, in normal conditions
Under, it can only also illustrate different with the computational methods of base band power value to downstream signal performance number, can not be judged with this
Downstream signal performance number is inaccurate, that is to say, that can equally be launched downstream signal.
The downstream signal obtained by RRU progress frequency up-converted is subjected to power calculation and downstream signal performance number is obtained
Afterwards, by the downstream signal performance number and the base band work(that the baseband signal that obtained BBU is sent is calculated according to the configuration information of cell
Rate value is compared, to determine whether downstream signal performance number is accurate, such as accurate, then is launched downstream signal.So, exist
Largely, it is ensured that the power output of resulting downstream signal and the accuracy of detection power, so as to logical
The detection of road failure has higher success rate.
Reference picture 10, proposes the another embodiment of device of diagnosing base station channel failure of the present invention, and the device also includes：
Selecting module 50, for selecting a passage in down going channel as transmission channel, and under selected transmitting is described
The time slot of row signal.
When the baseband signal transmitted by BBU is converted to downstream signal by RRU, and need the descending letter by down going channel
When number being launched, selecting module 50 can select a passage to be used as transmission channel in RRU down going channel.Meanwhile, also
The time slot of selected transmitting downstream signal is needed, in the present embodiment, when can select RRU main carrier TSO time slots or descending pilot frequency
Gap DWPTS, in other lower industry bar time slots, because business is uncertain, and power output is non-constant, therefore, is not suitable as
The time slot of power detection.
A down going channel is selected in RRU down going channel as the transmission channel of downstream signal, and by downstream signal
Launched；Meanwhile, select the time slot of RRU main carrier TSO time slots or descending pilot frequency time slot DWPTS for transmitting downstream signal.Can
So that the power detection to downstream signal becomes apparent, simply, and due to the downstream signal power output of selected time slot
It is relatively stable, further ensure the accuracy that power detection is carried out to detection signal.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize
Equivalent structure or equivalent flow conversion that description of the invention and accompanying drawing content are made, or directly or indirectly it is used in other correlations
Technical field, be similarly included in the present invention scope of patent protection.
Claims (8)
1. a kind of method of diagnosing base station channel failure, it is characterised in that including：
The baseband signal that Base Band Unit BBU is sent is received, the baseband signal is converted into downstream signal, and to the descending letter
Number carry out power calculation, obtain downstream signal performance number；
The downstream signal is launched, the transmission signal performance number of transmission channel is measured, and it is anti-to calculate the downstream signal
It is fed to the forward signal power value of sense channel；
The transmission signal performance number and forward signal power value are subjected to mathematic interpolation with the downstream signal performance number respectively,
And judge whether the transmission channel and sense channel break down respectively according to obtained difference, specifically include：
The transmission signal performance number and the downstream signal performance number are subjected to mathematic interpolation and obtain transmission channel actual gain,
And contrasted the transmission channel actual gain with calculating obtained transmission channel nominal gain according to calibrating parameters, to sentence
Whether disconnected transmission channel breaks down；
The forward signal power value and the downstream signal performance number are subjected to mathematic interpolation and obtain sense channel actual gain,
And contrasted the sense channel actual gain with calculating obtained sense channel nominal gain according to calibrating parameters, to sentence
Whether disconnected sense channel breaks down.
2. the method as described in claim 1, it is characterised in that be converted to downstream signal performing described by baseband signal, and
Power calculation is carried out to the downstream signal, after obtaining downstream signal performance number, in addition to：
By the downstream signal performance number and the base band work(that the baseband signal that obtained BBU is sent is calculated according to community configured information
Rate value is compared, to determine the accuracy of the downstream signal performance number.
3. method as claimed in claim 1 or 2, it is characterised in that described to be launched downstream signal, measures transmission channel
Transmission signal performance number, and calculate the downstream signal and feed back to the forward signal power value of sense channel and include：
The downstream signal is launched by transmission channel and exterior antenna mouthful, and entered at the antenna opening with instrument
Row measurement, obtains transmission signal performance number；
When the downstream signal is after switch control feeds back to sense channel, according to the parameter of the downstream signal preserved, meter
Calculation obtains forward signal power value.
4. the method as described in claim 1, it is characterised in that perform it is described downstream signal is launched before, also wrap
Include：
A passage is selected in down going channel as transmission channel, and the time slot of the selected transmitting downstream signal.
5. a kind of device of diagnosing base station channel failure, it is characterised in that including：
Receiving module, the baseband signal for receiving Base Band Unit BBU transmissions, downstream signal is converted to by the baseband signal,
And power calculation is carried out to the downstream signal, obtain downstream signal performance number；
Transmitter module, for the downstream signal to be launched, measures the transmission signal performance number of transmission channel, and calculate institute
State the forward signal power value that downstream signal feeds back to sense channel；
Judge module, for by the transmission signal performance number and forward signal power value respectively with the downstream signal performance number
Mathematic interpolation is carried out, and judges whether the transmission channel and sense channel break down respectively according to obtained difference, it is described
Judge module includes：
First comparison unit, is obtained for the transmission signal performance number and the downstream signal performance number to be carried out into mathematic interpolation
Transmission channel actual gain, and the transmission channel actual gain is demarcated with calculating obtained transmission channel according to calibrating parameters
Gain is contrasted, to judge whether transmission channel breaks down；
Second comparison unit, is obtained for the forward signal power value and the downstream signal performance number to be carried out into mathematic interpolation
Sense channel actual gain, and the sense channel actual gain is demarcated with calculating obtained sense channel according to calibrating parameters
Gain is contrasted, to judge whether sense channel breaks down.
6. device as claimed in claim 5, it is characterised in that also include：
Comparison module, for calculating the downstream signal performance number and according to community configured information the base that obtained BBU is sent
The base band power value of band signal is compared, to determine the accuracy of the downstream signal performance number.
7. the device as described in claim 5 or 6, it is characterised in that the transmitter module includes：
Measuring unit, for the downstream signal to be launched by transmission channel and exterior antenna mouthful, and in the day
Measured at line mouthful with instrument, obtain transmission signal performance number；
Computing unit, it is descending according to what is preserved for when the downstream signal is after switch control feeds back to sense channel
The parameter of signal, calculating obtains forward signal power value.
8. device as claimed in claim 5, it is characterised in that also include：
Selecting module, for selecting a passage in down going channel as transmission channel, and the selected transmitting downstream signal
Time slot.
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| CN104581793A (en) * | 2013-10-17 | 2015-04-29 | 中国移动通信集团公司 | Method and equipment for detecting base-station antenna feed system |
| 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 |
| CN106571879A (en) * | 2015-10-12 | 2017-04-19 | 中兴通讯股份有限公司 | Power detection method and device |
| CN106804044B (en) * | 2016-12-29 | 2020-03-31 | 海能达通信股份有限公司 | Communication fault detection method and device and radio remote unit |
| CN114143819B (en) * | 2021-11-30 | 2024-03-12 | 中信科移动通信技术股份有限公司 | Remote radio system and radio signal fault self-detection method |
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