CN101572903B - Signal reporting method, intermodulation performance testing method and system thereof - Google Patents
Signal reporting method, intermodulation performance testing method and system thereof Download PDFInfo
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- CN101572903B CN101572903B CN200910086580XA CN200910086580A CN101572903B CN 101572903 B CN101572903 B CN 101572903B CN 200910086580X A CN200910086580X A CN 200910086580XA CN 200910086580 A CN200910086580 A CN 200910086580A CN 101572903 B CN101572903 B CN 101572903B
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Abstract
The embodiment of the invention relates to a signal reporting method, an intermodulation performance testing method and a system thereof; wherein, the intermodulation performance testing method comprises the following steps of: transmitting a starting signal and a closing signal to a base station, wherein, a time difference between the starting signal and the closing signal is a period, the starting signal is used for indicating the base station to transmit a testing data, and the closing signal is used for indicating the base station to stop transmitting the testing data; receiving the electrical level value of an uplink signal which is sent by the base station in the period that the testing data is transmitted and in the period that the testing data is stopped transmitting; ensuring whether the uplink signals of the two periods are under the same interference fringe level according to the electrical level value of the uplink signal; and if the uplink signals are not under the same interference fringe level, the poor intermodulation performance of an antenna feeding system is determinated. The signal reporting method, the intermodulation performance testing method and the system thereof can realize that the intermodulation performance of the antenna feeding system can be tested without special radio frequency testing devices.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of signal reporting method, intermodulation performance detection method and system, base station and base station controller.
Background technology
Along with development of Communication Technique, when abundant communication service is provided for the user, more need pay attention to the user's communications quality.(Passive Inter-Modulation is an important indicator weighing the mobile communication quality PIM) to passive intermodulation, and passive intermodulation is caused by the nonlinear characteristic of various passive devices in the emission system.It has been generally acknowledged that passive component is linear, but under high-power condition passive component all exist to some extent certain non-linear, this non-linearly mainly cause by following factor: the contact of the metal of different materials, the contact surface of same material are rough, the junction not closely, have a magnetisable material etc.For example, passive components such as the joint of antenna-feedback system, feeder line, antenna, filter are operated under the high-power signal condition of a plurality of base stations, owing to there is the non-linear intermodulation effect that causes in parts itself.In addition, in high-power, multichannel system, the non-linear more high order harmonic component that can produce of these passive devices with respect to operating frequency, and these harmonic waves can mix produce one group of new frequency with operating frequency, and its final result is exactly to produce one group of useless frequency spectrum aloft and influence normal communication.
The third order intermodulation distortion that is produced by two frequencies is a ubiquitous problem in the narrow-band communication system.When having the signal of two (or more) in the system, can produce very strong intermodulation product usually.The existence meeting of intermodulation product produces communication system and disturbs, the intermodulation product that particularly drops in the receiving belt will produce serious influence to the receptivity of system, therefore the intermodulation characteristic of passive components such as butt joint at present, cable, antenna all has strict requirement, for example the passive intermodulation index of joint≤-150dBc, the passive intermodulation index of cable≤-170dBc, the passive intermodulation index of antenna≤-150dBc.
The intermodulation frequency that dual-frequency system produced is shown below:
FIM＝F1+F2+2F2-F1+2F1-F2+3F2-2F1+3F1-2F2.......
Usually the frequency product of these mixing can be represented by its exponent number, is for example represented by three rank of 2F2-F1 and 2F1-F2, is represented or the like by five rank of 3F2-2F1 and 3F1-2F2;
Wherein 2F2-F1 and 2F1-F2 are maximum intermodulation products, the third order intermodulation distortion that Here it is often says, and in a lot of communication systems, the intermodulation product 2F1-F2 in left side can fall into the reception frequency range or the transmit frequency band of native system, so third order intermodulation distortion is the emphasis of discussing.In some system, as global system for mobile communications (Global System for Mobile Communications, GSM) in, the intermodulation product of band downlink drops in the up receiving belt, uplink spectrum generation distortion or low noise are raised, and the signal of radio frequency is through demodulation, and serious shake will take place data phase, thereby cause the distortion of voice, influence user's impression.
Therefore, must the intermodulation performance of system be detected, could solve the problem that exists, the normal operation of safeguards system.At present, intermodulation performance detects the general passive intermodulation analyzer that adopts, the exportable two-frequency signal of combination in advance.The intermodulation instrument has two prevention at radio-frequency port, the two-frequency signal of port one exportable two high power levels, and through entering the port two of analyzer behind the measured device, the reflected signal of port one also enters the receiver of analyzer simultaneously.Analyzer can be worked under transmission mode and reflective-mode two states, measures the transmission intermodulation distortion and the reflection intermodulation distortion of measured piece respectively.
But the inventor states on the implementation in the process of technical scheme and finds: the detection method measurement effect of passive intermodulation distortion is relatively poor, and tester costs an arm and a leg, the testing cost height.
Summary of the invention
The embodiment of the invention provides a kind of signal reporting method, intermodulation performance detection method and system, base station and base station controller, to realize need not the intermodulation performance that special-purpose radio frequency testing equipment can detect antenna-feedback system.
The embodiment of the invention provides a kind of signal reporting method, and this method comprises:
Reception is from the enabling signal of base station controller, send test data according to described enabling signal, simultaneously, the upward signal level value of detection self working frequency points in the cycle that sends test data, and report detected upward signal level value in the cycle of described transmission test data to described base station controller, so that described base station controller detects the intermodulation performance of antenna-feedback system according to described upward signal level value;
When the shutdown signal that receives from base station controller, stop to send test data, simultaneously, stopping to send the upward signal level value that detects self working frequency points in the cycle of test data, and in described base station controller reports the described cycle that stops to send test data detected upward signal level value so that described base station controller detects the intermodulation performance of antenna-feedback system according to described upward signal level value.
The embodiment of the invention provides a kind of intermodulation performance detection method, and this method comprises:
Send enabling signal and shutdown signal to the base station, the time difference between described enabling signal and the shutdown signal is an one-period, and described enabling signal is used to indicate the base station to send test data, and described shutdown signal is used to indicate the base station to stop to send test data;
Receive the base station in the cycle that sends test data and stop to send the upward signal level value that test data sent in the cycle, determine according to described upward signal level value whether the upward signal in two cycles is in same interference fringe grade, if be not in same interference fringe grade, confirm that then the antenna-feedback system intermodulation performance is poor.
The embodiment of the invention provides a kind of base station, and this base station comprises:
Receiving element is used to receive enabling signal and shutdown signal from base station controller;
Transmitting element, the enabling signal that is used for receiving according to receiving element sends test data, and the shutdown signal that receives according to receiving element stops to send test data;
Detecting unit is used for sending in the cycle of test data and stopping to send the upward signal level value that detects self working frequency points in cycle of test data;
Report the unit, be used for reporting in the cycle of described transmission test data and detected upward signal level value in the described cycle that stops to send test data, so that described base station controller detects the intermodulation performance of antenna-feedback system according to described upward signal level value to described base station controller.
The embodiment of the invention provides a kind of base station controller, and this device comprises:
Sending module, be used for sending enabling signal and shutdown signal to the base station, time difference between described enabling signal and the shutdown signal is an one-period, and described enabling signal is used to indicate the base station to send test data, and described shutdown signal is used to indicate the base station to stop to send test data;
Determination module, be used to receive the base station in the cycle that sends test data and stop to send the upward signal level value that test data sent in the cycle, determine according to described upward signal level value whether the upward signal in two cycles is in same interference fringe grade, if be not in same interference fringe grade, confirm that then the antenna-feedback system intermodulation performance is poor.
The embodiment of the invention provides a kind of intermodulation performance detection system, and this system comprises:
Described base station, be used to receive enabling signal from base station controller, send test data according to described enabling signal, simultaneously, sending the upward signal level value that detects self working frequency points in the cycle of test data, and reporting detected upward signal level value in the cycle of described transmission test data to described base station controller; When the shutdown signal that receives from base station controller, stop to send test data, simultaneously, stopping to send the upward signal level value that detects self working frequency points in the cycle of test data, and in described base station controller reports the described cycle that stops to send test data detected upward signal level value;
Described base station controller, be used for sending enabling signal and shutdown signal to described base station, time difference between described enabling signal and the shutdown signal is an one-period, and described enabling signal is used to indicate the base station to send test data, and described shutdown signal is used to indicate the base station to stop to send test data; Receiving described base station is sending in the cycle of test data and is stopping to send the upward signal level value that test data sent in the cycle, determine according to described upward signal level value whether the upward signal in two cycles is in same interference fringe grade, if be not in same interference fringe grade, confirm that then the antenna-feedback system intermodulation performance is poor.
Above-mentioned signal reporting method and base station report base station controller with detected upward signal level value; Above-mentioned intermodulation performance detection method and base station controller are by receiving the upward signal level value that the base station sends, and determine according to described upward signal level value whether the upward signal in two cycles is in same interference fringe grade, if be not in same interference fringe grade, confirm that then the antenna-feedback system intermodulation performance is poor; Above-mentioned intermodulation performance detection system utilizes above-mentioned base station and base station controller to determine the intermodulation performance of antenna-feedback system, thereby has realized need not the intermodulation performance that special-purpose radio frequency testing equipment can detect antenna-feedback system.
Description of drawings
Fig. 1 is the flow chart of a kind of signal reporting method of the embodiment of the invention;
Fig. 2 is the flow chart of a kind of intermodulation performance detection method of the embodiment of the invention;
Fig. 3 A is a structural representation of a kind of base station of the embodiment of the invention;
Fig. 3 B is another structural representation of a kind of base station of the embodiment of the invention;
Fig. 4 A is a structural representation of a kind of base station controller of the embodiment of the invention;
Fig. 4 B is another structural representation of a kind of base station controller of the embodiment of the invention;
Fig. 5 is the structural representation of intermodulation performance detection system embodiment of the present invention.
Embodiment
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
As shown in Figure 1, be the flow chart of a kind of signal reporting method of the embodiment of the invention, this method comprises:
Usually, antenna-feedback system intermodulation performance missionary society shows with the form of disturbing under the Bulk Call situation, therefore can when traffic is not busy, measure the uplink interference level value by the descending big traffic of (as morning) simulation, and it is very clean that give tacit consent to the wireless environment of eating dishes without rice or wine this moment, nets outer air interference to gsm system influence minimum in a day.In addition, agreement regulation gsm system can send emission (dummyburst) data of eating dishes without rice or wine when not having data to send, and the definition of dummy burst is as shown in table 1; Therefore, when traffic is not busy, for example start all base station full power emission Dummy burst data in the sub-district by base station controller, simulate big traffic and test at 1:00 AM;
The definition list of table 1 dummy burst
| Item (Bit Number, BN) | Field length | Field contents | Definition |
| 0-2 | 3 | tail?bits | (as follows) |
| 3-144 | 142 | mixed?bits | (as follows) |
| 145-147 | 3 | tail?bits | (as follows) |
Wherein, tail position (tail bits) and mixing position (mixed bits) item (Bit Number, represent that BN) the tail position is defined as follows:
(BN0, BN1, BN2)=(0,0,0) and (BN145, BN146, BN147)=(0,0,0); Mixing the position is defined as follows:
(BN3，BN4..BN144)＝(1，1，1，1，1，0，1，1，0，1，1，1，0，1，1，0，0，0，0，0，1，0，1，0，0，1，0，0，1，1，1，0，0，0，0，0，1，0，0，1，0，0，0，1，0，0，0，0，0，0，0，1，1，1，1，1，0，0，0，1，1，1，0，0，0，1，0，1，1，1，0，0，0，1，0，1，1，1，0，0，0，1，0，1，0，1，1，1，0，1，0，0，1，0，1，0，0，0，1，1，0，0，1，1，0，0，1，1，1，0，0，1，1，1，1，0，1，0，0，1，1，1，1，1，0，0，0，1，0，0，1，0，1，1，1，1，1，0，1，0，1，0)；
Base station full power emission after receiving from the enabling signal of base station controller eats dishes without rice or wine to launch data, and sending the upward signal level value that detects self working frequency points in the cycle of test data, report above-mentioned upward signal level value to above-mentioned base station controller then, just stop to launch data until the shutdown signal base station that receives from base station controller; The enabling signal that receives from base station controller from the base station is an one-period to the shutdown signal that receives from base station controller, promptly sends the cycle of test data; Equally, the shutdown signal that receives from base station controller from the base station also is one-period to the enabling signal that receives from base station controller, promptly stops to send the cycle of test data;
Above-mentioned base station is in the cycle that sends test data, detect the upward signal level value of self working frequency points, and report above-mentioned upward signal level value to be specifically as follows: in the cycle that sends test data to above-mentioned base station controller, per 104 frames (about 480ms) every frame received signal intensity indication (RSSI) in described working frequency points corresponding service channel (TCH) or the Separate Dedicated Control Channel (SDCCH) that adds up, calculate the mean value of this RSSI, and report base station controller with form of message;
The base station is stopping to send the upward signal level value that detects self working frequency points in the cycle of test data, and report above-mentioned upward signal level value to above-mentioned base station controller, being the base station reports base station controller with the upward signal level value of self working frequency points of detecting in two cycles, so that described base station controller detects the intermodulation performance of antenna-feedback system according to described upward signal level value.
Above-mentioned signal reporting method reports base station controller with detected upward signal level value, so that base station controller detects the intermodulation performance of antenna-feedback system according to the upward signal level value that receives, thereby realized need not the intermodulation performance that special-purpose radio frequency testing equipment can detect antenna-feedback system.As shown in Figure 2, be the flow chart of a kind of intermodulation performance detection method of the embodiment of the invention, this method comprises:
In order to control the time of base station test data, base station controller sends enabling signal and shutdown signal to the base station, and the time difference between above-mentioned enabling signal and the shutdown signal is an one-period;
Wherein, above-mentionedly determine according to described upward signal level value whether the upward signal in two cycles is in same interference fringe grade and comprises: calculate the highest interference fringe grade point of the residing frequency of upward signal level value in described two cycles respectively according to described upward signal level value, if the difference of the highest interference fringe grade point is greater than predetermined value in described two cycles, the upward signal of then determining described two cycles is not in same interference fringe grade, otherwise, determine that the upward signal in described two cycles is in same interference fringe grade; Or, calculate the ratio that upward signal level value in described two cycles is in preceding n the highest interference fringe grade of intensity respectively according to described upward signal level value, if it is inequality that the upward signal level value in described two cycles is in the ratio of preceding n the highest interference fringe grade of intensity, the upward signal of then determining described two cycles is not in same interference fringe grade, otherwise, the upward signal of determining described two cycles is in same interference fringe grade, and wherein n is a natural number.
For example, interference can be divided into 5 interference fringe grades, the interference fringe level value of each interference fringe grade is disposed by base station controller, and as shown in table 2 is the interference fringe level value of 5 interference fringe grade correspondences;
Table 2 interference fringe grade allocation list
| The interference fringe grade | The interference fringe level value |
| Interference fringe 1 | -120～-98dBm |
| Interference fringe 2 | -98～-90dBm |
| Interference fringe 3 | -90～-87dBm |
| Interference fringe 4 | -87～-85dBm |
| Interference fringe 5 | -85～-47dBm |
Wherein, the interference fringe grade is high more, and the interference that expression is subjected to is big more, in general, if the situation that idle channel falls into interference fringe 4 or interference fringe 5 occurs, just thinks to exist and disturbs.
The method of calculating the interference fringe grade can comprise: according to above-mentioned upward signal level value, add up the number that interior all channels of each cycle are in each interference fringe, calculate the highest interference fringe grade point of intensity in each cycle according to above-mentioned number; Calculate intermodulation level according to the interference fringe grade point that intensity is the highest in two cycles; Wherein, add up all channels in each cycle be in each interference fringe number can for: every set time such as the 5S interference level value that all channels are in of sampling, interference fringe level value according to the base station controller configuration is mapped in the concrete interference fringe then, add up the number that all channels are in each interference fringe, and carry out statistical average in the cycle in interference statistics, concrete formula is as follows:
In addition, the interference fringe grade point that above-mentioned intensity is the highest is interference fringe 4 grades and the shared ratio of interference fringe 5 grades, and base station controller can adopt the highest interference fringe grade point of following algorithm computation intensity:
Calculate the ratio of interference fringe 4,5 grades in the Dummy burst current period
Be in the ratio maximum among the interference fringe I;
Calculate the ratio of the value of interference fringe 4,5 in the Dummy burst next cycle
Be in the ratio maximum among the interference fringe J;
Definition intermodulation level PIM=I-J, (0＜=PIM＜=4), if PIM, determines then that the intermodulation performance of antenna-feedback system is poor greater than predetermined value, this predetermined value can be provided with as required, for example can be 1; In addition, if the value of A and B is different, can determine that then the intermodulation performance of antenna-feedback system is poor.
Below by an example, the method for employing present embodiment detects the intermodulation performance of antenna-feedback system:
For sending the test data cycle:
Suppose that it all was IDLE that current area has 14 TCH channels in 1 hour, detect this 14 channels every the 5S program, sampling for the first time have 2 channels to be in to disturb 5 (the level value scope :-85～-47dBm), 2 be in interference fringe 3 (level value scope-90～-87dBm), 10 be in interference fringe 1 (the level value scope :-120～-98dBm); Sample 1 for the second time be in interference fringe 5 (the level value scope :-85～-47dBm), 3 be in interference fringe 3 (level value scope-90～-87dBm); Have later on 600 14 TCH channels be in interference fringe 4 (the level value scope :-87～-85dBm), remaining each sampling all be in interference fringe 1 (the level value scope :-120～-98dBm).
In the measurement period (being assumed to be 1 hour), sample altogether 720 times so.
Interference fringe 5 grades: (2+1)/720=0.0042, proportion 0%
Interference fringe 4 grades: 600 * 14/720=11.67, proportion 83.9%
Interference fringe 3 grades: (2+3)/720=0.0069, proportion 0%
Interference fringe 2 grades: 0%
Interference fringe 1 grade: (10+10+118 * 14)/720=2.24, the value of 16.1% A of proportion is:
It is the ratio maximum that channel is arranged in interference fringe 4 grades;
For stopping to send the test data cycle:
Suppose that it all was IDLE that current area has 14 TCH channels in 1 hour, detect this 14 channels every the 5S program, have 50 14 channels be in interference fringe 4 (the level value scope :-87～-85dBm), have 150 14 TCH channels be in interference fringe 2 (the level value scope :-87～-85dBm), remaining each sampling all be in interference fringe 1 (the level value scope :-120～-98dBm).
Interference fringe 5 grade ratios: proportion 0
Interference fringe 4 grade ratios: proportion 6.9%
Interference fringe 3 grade ratios: proportion 0
Interference fringe 2 grade ratios: proportion 20.8%
Interference fringe 1 grade ratio: proportion 72.2%
Then the value of B is:
It is the ratio maximum that channel is arranged in interference fringe 1 grade;
Thereby, intermodulation level PIM=4-1=3;
A＝83.9％，B＝6.9％。
Because PIM is greater than predetermined value 1 in the present embodiment, thereby can determine that the antenna-feedback system intermodulation performance is poor; In addition, because the value of A and B is different, can determine that also the antenna-feedback system intermodulation performance is poor.
In addition, if the value of B greater than predetermined threshold as 10%, can determine that then antenna-feedback system deposits strong jamming offline, promptly for example if A＞=10% and B＜10% item can determine that this sub-district antenna-feedback system intermodulation performance is poor; If A＞=10% and B＞=10% then can determine this sub-district internal memory strong jamming offline; Above-mentioned predetermined threshold can be provided with as required.
For the frequency band of determining that further the outer strong jamming of net exists, this method can also comprise: carry out up wideband scanning when traffic is busy, reception is from the scanning result of base station, and calculates the upward signal level value of each frequency of full frequency band in each cycle according to described scanning result; In bandwidth, judge greater than the frequency proportion of predetermined interference level thresholding if, determine that then the outer strong jamming of described net is positioned at described bandwidth greater than the predetermined ratio of described bandwidth according to the result of calculation of described up level value.A full rate TCH multi-frame of base station comprises an idle TDMA (IDLE) frame, and the base station is at this idle frame time slot, and (M900:890-915M M1800:1710-1785M) scans, line level on the record to up full frequency band; After the been scanned scanning result promptly gone up line level reporting base station controller; Base station controller carries out up wideband scanning when traffic is busy, add up up frequency point scanning result, for example, suppose 1 hour be 1 cycle, the mean value of the last line level of each each frequency of computation of Period.Simultaneously, it is T that the strong jamming level threshold is set, bandwidth be M (M900-25M, M1800-75M), if in this bandwidth greater than the frequency proportion of T greater than M*20%, then confirm to disturb to exist in this bandwidth M.
In addition, detect when depositing strong jamming offline at base station controller, can provide alarm prompt immediately, whether have situations such as joint loose contact, intermodulation performance exceed standard by Radio Frequency Engineer according to the mixer of alarming the inspection antenna-feedback system, wire jumper, antenna etc. again, thereby handle accordingly.
Above-mentioned intermodulation performance detection method, by receiving the upward signal level value that the base station sends, and determine according to described upward signal level value whether the upward signal in two cycles is in same interference fringe grade, thereby realized need not the intermodulation performance that special-purpose radio frequency testing equipment can detect antenna-feedback system; In addition, can determine and whether deposit strong jamming offline, and after can further determining net which frequency band outer strong jamming existing, provide alarm prompt immediately, problems affect can be reduced to minimum by base station controller.
As shown in Figure 3A, be a structural representation of a kind of base station of the embodiment of the invention, this base station comprises: receiving element 11 is used to receive enabling signal and shutdown signal from base station controller; Transmitting element 12 be used for sending test data according to the enabling signal that receiving element 11 receives, and the shutdown signal that receives according to receiving element 11 stops to send test data; Detecting unit 13 is used for sending in the cycle of test data and stopping to send the upward signal level value that detects self working frequency points in cycle of test data; Report unit 14, be used for reporting in the cycle of described transmission test data and detected upward signal level value in the described cycle that stops to send test data, so that described base station controller detects the intermodulation performance of antenna-feedback system according to described upward signal level value to described base station controller.
For the upward signal level value that the base station is detected reports base station controller, shown in Fig. 3 B, above-mentioned base station can also comprise: computing unit 15, be used in the cycle that sends test data, every frame received signal intensity indication RSSI in the interior above-mentioned working frequency points respective channels of the scheduled time that adds up calculates the mean value that above-mentioned signal strength signal intensity is indicated RSSI; The above-mentioned unit 14 that reports specifically is used for form of message the mean value of above-mentioned RSSI being reported above-mentioned base station controller.
Wherein, the enabling signal that receives from the base station from base station controller is an one-period to the shutdown signal that receives from base station controller; Equally, the shutdown signal that receives from the base station from base station controller also is one-period to the enabling signal that receives from base station controller; The above-mentioned unit 14 that reports is that the upward signal level value in two cycles is reported base station controller, and concrete report method does not repeat them here with signal reporting method embodiment of the present invention.
Above-mentioned base station is by enabling signal and the shutdown signal of receiving element reception from base station controller, send test data and stop to send test data according to above-mentioned enabling signal by transmitting element according to above-mentioned shutdown signal, and sending test data and stopping to send the upward signal level value that detects self work product shop in cycle of test data, utilizing at last reports the unit that detected upward signal level value in two cycles is reported base station controller, so that base station controller detects the intermodulation performance of antenna-feedback system according to the upward signal level value that receives, thereby realized need not the intermodulation performance that special-purpose radio frequency testing equipment can detect antenna-feedback system, reduced the detection cost.
Shown in Fig. 4 A, a structural representation for a kind of base station controller of the embodiment of the invention, this base station controller comprises: sending module 21, be used for sending enabling signal and shutdown signal to the base station, time difference between described enabling signal and the shutdown signal is an one-period, described enabling signal is used to indicate the base station to send test data, and described shutdown signal is used to indicate the base station to stop to send test data; Determination module 22, be used to receive the base station in the cycle that sends test data and stop to send the upward signal level value that test data sent in the cycle, determine according to described upward signal level value whether the upward signal in two cycles is in same interference fringe grade, if be not in same interference fringe grade, confirm that then the antenna-feedback system intermodulation performance is poor.
Wherein, the method whether upward signal of determining two cycles is in same interference fringe grade has multiple, for example can be by judging that whether the difference of interference fringe grade point the highest in two cycles is greater than predetermined value, also whether the ratio that can be in preceding n the highest interference fringe grade of intensity by the upward signal level value in two cycles realizes mutually on an equal basis, thereby, above-mentioned determination module 22 can comprise: first determining unit 221, be used for calculating the highest interference fringe grade point of the residing frequency of upward signal level value in described two cycles respectively according to described upward signal level value, if the difference of the highest interference fringe grade point is greater than predetermined value in described two cycles, the upward signal of then determining described two cycles is not in same interference fringe grade, otherwise, determine that the upward signal in described two cycles is in same interference fringe grade; Or, second determining unit 222, be used for calculating the ratio that upward signal level value in described two cycles is in preceding n the highest interference fringe grade of intensity respectively according to described upward signal level value, if it is inequality that the upward signal level value in described two cycles is in the ratio of preceding n the highest interference fringe grade of intensity, the upward signal of then determining described two cycles is not in same interference fringe grade, otherwise, the upward signal of determining described two cycles is in same interference fringe grade, and wherein n is a natural number.
In addition, second determining unit 222 also is used for if describedly stop to send that the upward signal level value is in the ratio of preceding n the highest interference fringe grade of intensity greater than predetermined threshold in the test data cycle, then definite antenna-feedback system is deposited strong jamming offline, wherein, above-mentioned predetermined threshold can be provided with as required.
Further, shown in Fig. 4 B, this base station controller can also comprise computing module 23, frequency band determination module 24 and information reporting module 25.After definite antenna-feedback system is deposited strong jamming offline, can also determine by computing module 23 and frequency band determination module 24 and disturb the frequency band that exists, wherein, computing module 23, be used for when traffic is busy, carrying out up wideband scanning, reception is from the scanning result of base station, and calculates the upward signal level value of each frequency of full frequency band in each cycle according to described scanning result; Frequency band determination module 24, be used in bandwidth, judge greater than the frequency proportion of predetermined interference level thresholding if, determine that then the outer strong jamming of described net is positioned at described bandwidth according to the result of calculation of described up level value greater than the predetermined ratio of described bandwidth.In addition, after base station controller is confirmed to disturb the frequency band that exists, can also report wideband to disturb warning information by information reporting module 25, check according to warning information by Radio Frequency Engineer whether the mixer, wire jumper, antenna etc. of antenna-feedback system exist situations such as joint loose contact, intermodulation performance exceed standard again, thereby handle accordingly.
Above-mentioned base station controller, send enabling signal and shutdown signal cycle by sending module to the base station with control base station reporting uplink signal level value, determine the intermodulation performance of antenna-feedback system according to what receive from the upward signal level value by determination module, thereby realized need not the intermodulation performance that special-purpose radio frequency testing equipment can detect antenna-feedback system; In addition, can also determine and whether deposit strong jamming offline, and after can further determining net which frequency band outer strong jamming existing, provide alarm prompt immediately, problems affect can be reduced to minimum by base station controller.
As shown in Figure 5, structural representation for intermodulation performance detection system embodiment of the present invention, this system comprises base station 1 and base station controller 2, wherein, the structure of the base station among above-mentioned base station 1 and the base station embodiment of the present invention is identical, do not give unnecessary details at this, the structure of the base station controller among above-mentioned base station controller 2 and the base station controller embodiment of the present invention is identical, does not give unnecessary details at this.
Above-mentioned intermodulation performance detection system, utilize above-mentioned base station that detected upward signal level value is reported base station controller, utilize base station controller to determine by the upward signal level value that receives the base station transmission whether the upward signal in two cycles is in same interference fringe grade, thereby realized need not the intermodulation performance that special-purpose radio frequency testing equipment can detect antenna-feedback system; In addition, can determine and whether deposit strong jamming offline, and after can further determining net which frequency band outer strong jamming existing, provide alarm prompt immediately, problems affect can be reduced to minimum by base station controller.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is when carrying out, execution comprises the step of said method embodiment, and aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted last that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not break away from the spirit and scope of technical solution of the present invention.
Claims (15)
1. signal reporting method is characterized in that comprising:
Reception is from the enabling signal of base station controller, send test data according to described enabling signal, simultaneously, the upward signal level value of detection self working frequency points in the cycle that sends test data, and report detected upward signal level value in the cycle of described transmission test data to described base station controller, so that described base station controller detects the intermodulation performance of antenna-feedback system according to described upward signal level value;
When the shutdown signal that receives from base station controller, stop to send test data, simultaneously, stopping to send the upward signal level value that detects self working frequency points in the cycle of test data, and in described base station controller reports the described cycle that stops to send test data detected upward signal level value so that described base station controller detects the intermodulation performance of antenna-feedback system according to described upward signal level value.
2. signal reporting method according to claim 1, it is characterized in that describedly sending the upward signal level value that detects self working frequency points in the cycle of test data, and report to described base station controller that detected upward signal level value comprises in the cycle of described transmission test data:
In the cycle that sends test data, every frame received signal intensity indication RSSI in the interior described working frequency points respective channels of the scheduled time that adds up, calculate the mean value of described signal strength signal intensity indication RSSI, and the mean value of described RSSI is reported described base station controller with form of message.
3. intermodulation performance detection method is characterized in that comprising:
Send enabling signal and shutdown signal to the base station, the time difference between described enabling signal and the shutdown signal is an one-period, and described enabling signal is used to indicate the base station to send test data, and described shutdown signal is used to indicate the base station to stop to send test data;
Receive the base station in the cycle that sends test data and stop to send the upward signal level value that test data sent in the cycle, determine according to described upward signal level value whether the upward signal in two cycles is in same interference fringe grade, if be not in same interference fringe grade, confirm that then the antenna-feedback system intermodulation performance is poor.
4. intermodulation performance detection method according to claim 3 is characterized in that describedly determining according to described upward signal level value whether the upward signal in two cycles is in same interference fringe grade and comprises:
Calculate the highest interference fringe grade point of the residing frequency of upward signal level value in described two cycles respectively according to described upward signal level value, if the difference of the interference fringe grade point that the residing frequency of upward signal level value in described two cycles is the highest is greater than predetermined value, the upward signal of then determining described two cycles is not in same interference fringe grade, otherwise, determine that the upward signal in described two cycles is in same interference fringe grade; Or,
Calculate the ratio that upward signal level value in described two cycles is in preceding n the highest interference fringe grade of intensity respectively according to described upward signal level value, if it is inequality that the upward signal level value in described two cycles is in the ratio of preceding n the highest interference fringe grade of intensity, the upward signal of then determining described two cycles is not in same interference fringe grade, otherwise, the upward signal of determining described two cycles is in same interference fringe grade, and wherein n is a natural number.
5. intermodulation performance detection method according to claim 4 is characterized in that also comprising:
If describedly stop to send the upward signal level value is in preceding n the highest interference fringe grade of intensity in the test data cycle ratio greater than predetermined threshold, then definite antenna-feedback system is deposited strong jamming offline.
6. intermodulation performance detection method according to claim 5 is characterized in that also comprising:
When traffic is busy, carry out up wideband scanning, receive scanning result, and calculate the upward signal level value of each frequency of full frequency band in each cycle according to described scanning result from the base station;
In bandwidth, judge greater than the frequency proportion of predetermined interference level thresholding if, determine that then the outer strong jamming of described net is positioned at described bandwidth greater than the predetermined ratio of described bandwidth according to the result of calculation of described upward signal level value.
7. intermodulation performance detection method according to claim 6 is characterized in that the outer strong jamming of described definite described net is positioned at after the described bandwidth, also comprises:
Report wideband to disturb warning information.
8. base station is characterized in that comprising:
Receiving element is used to receive enabling signal and shutdown signal from base station controller;
Transmitting element, the enabling signal that is used for receiving according to receiving element sends test data, and the shutdown signal that receives according to receiving element stops to send test data;
Detecting unit is used for sending in the cycle of test data and stopping to send the upward signal level value that detects self working frequency points in cycle of test data;
Report the unit, be used for reporting in the cycle of described transmission test data and detected upward signal level value in the described cycle that stops to send test data, so that described base station controller detects the intermodulation performance of antenna-feedback system according to described upward signal level value to described base station controller.
9. base station according to claim 8 is characterized in that also comprising:
Computing unit was used in the cycle that sends test data, and the every frame received signal intensity indication RSSI in the scheduled time of adding up in the described working frequency points respective channels calculates the mean value that described signal strength signal intensity is indicated RSSI;
The described unit that reports specifically is used for form of message the mean value of described RSSI being reported described base station controller.
10. base station controller is characterized in that comprising:
Sending module, be used for sending enabling signal and shutdown signal to the base station, time difference between described enabling signal and the shutdown signal is an one-period, and described enabling signal is used to indicate the base station to send test data, and described shutdown signal is used to indicate the base station to stop to send test data;
Determination module, be used to receive the base station in the cycle that sends test data and stop to send the upward signal level value that test data sent in the cycle, determine according to described upward signal level value whether the upward signal in two cycles is in same interference fringe grade, if be not in same interference fringe grade, confirm that then the antenna-feedback system intermodulation performance is poor.
11. base station controller according to claim 10 is characterized in that described determination module comprises:
First determining unit, be used for calculating the highest interference fringe grade point of the residing frequency of upward signal level value in described two cycles respectively according to described upward signal level value, if the difference of the highest interference fringe grade point is greater than predetermined value in described two cycles, the upward signal of then determining described two cycles is not in same interference fringe grade, otherwise, determine that the upward signal in described two cycles is in same interference fringe grade; Or,
Second determining unit, be used for calculating the ratio that upward signal level value in described two cycles is in preceding n the highest interference fringe grade of intensity respectively according to described upward signal level value, if it is inequality that the upward signal level value in described two cycles is in the ratio of preceding n the highest interference fringe grade of intensity, the upward signal of then determining described two cycles is not in same interference fringe grade, otherwise, the upward signal of determining described two cycles is in same interference fringe grade, and wherein n is a natural number.
12. base station controller according to claim 11, it is characterized in that described second determining unit also is used for if describedly stop to send the upward signal level value is in preceding n the highest interference fringe grade of intensity in the test data cycle ratio greater than predetermined threshold, then definite antenna-feedback system is deposited strong jamming offline.
13. base station controller according to claim 12 is characterized in that also comprising:
Computing module is used for carrying out up wideband scanning when traffic is busy, receives the scanning result from the base station, and calculates the upward signal level value of each frequency of full frequency band in each cycle according to described scanning result;
The frequency band determination module, be used in bandwidth, judge greater than the frequency proportion of predetermined interference level thresholding if, determine that then the outer strong jamming of described net is positioned at described bandwidth according to the result of calculation of described upward signal level value greater than the predetermined ratio of described bandwidth.
14. base station controller according to claim 13 is characterized in that also comprising:
The information reporting module is used for that strong jamming is positioned at after the described bandwidth outside the frequency band determination module is determined described net, reports wideband to disturb warning information.
15. an intermodulation performance detection system comprises base station and base station controller, it is characterized in that:
Described base station, be used to receive enabling signal from base station controller, send test data according to described enabling signal, simultaneously, sending the upward signal level value that detects self working frequency points in the cycle of test data, and reporting detected upward signal level value in the cycle of described transmission test data to described base station controller; When the shutdown signal that receives from base station controller, stop to send test data, simultaneously, stopping to send the upward signal level value that detects self working frequency points in the cycle of test data, and in described base station controller reports the described cycle that stops to send test data detected upward signal level value;
Described base station controller, be used for sending enabling signal and shutdown signal to described base station, time difference between described enabling signal and the shutdown signal is an one-period, and described enabling signal is used to indicate the base station to send test data, and described shutdown signal is used to indicate the base station to stop to send test data; Receiving described base station is sending in the cycle of test data and is stopping to send the upward signal level value that test data sent in the cycle, determine according to described upward signal level value whether the upward signal in two cycles is in same interference fringe grade, if be not in same interference fringe grade, confirm that then the antenna-feedback system intermodulation performance is poor.
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| CN200910086580XA CN101572903B (en) | 2009-06-09 | 2009-06-09 | Signal reporting method, intermodulation performance testing method and system thereof |
| PCT/CN2010/073658 WO2010142231A1 (en) | 2009-06-09 | 2010-06-08 | Method for reporting signals, method and system for detecting inter-modulation performance |
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| CN200910086580XA CN101572903B (en) | 2009-06-09 | 2009-06-09 | Signal reporting method, intermodulation performance testing method and system thereof |
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| US9398464B2 (en) | 2011-07-11 | 2016-07-19 | Commscope Technologies Llc | Base station router for distributed antenna systems |
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| CN102014413B (en) * | 2010-12-13 | 2013-04-24 | 北京北方烽火科技有限公司 | System and method for testing radio frequency (RF) of long term evolution (LTE) base station |
| CN102769500B (en) * | 2011-05-03 | 2015-02-04 | 中国移动通信集团北京有限公司 | Judging method and device of intermodulation interference |
| CN102790980B (en) * | 2011-05-19 | 2016-06-15 | 中兴通讯股份有限公司 | Uplink spectrum scan method and device based on Wimax system |
| CN102217217B (en) * | 2011-05-27 | 2013-08-28 | 华为技术有限公司 | Method and apparatus for detecting pim position |
| BR112014006129A2 (en) | 2011-09-15 | 2017-04-11 | Andrew Wireless Systems Gmbh | configuration subsystem for telecommunication systems |
| EP2661828B1 (en) | 2011-09-16 | 2016-03-23 | Andrew Wireless Systems GmbH | Integrated intermodulation detection sub-system for telecommunications systems |
| CN102695284B (en) * | 2012-05-31 | 2015-05-27 | 华为技术有限公司 | Processing method, equipment and system of downlink block data |
| EP3614561A1 (en) | 2012-09-14 | 2020-02-26 | Andrew Wireless Systems GmbH | Uplink path integrity detection in distributed antenna systems |
| US9913147B2 (en) | 2012-10-05 | 2018-03-06 | Andrew Wireless Systems Gmbh | Capacity optimization sub-system for distributed antenna system |
| WO2020073284A1 (en) * | 2018-10-11 | 2020-04-16 | 华为技术有限公司 | Radio interference detection method and device |
| CN110572836B (en) * | 2019-08-27 | 2020-06-30 | 广芯微电子（广州）股份有限公司 | Base station signal strength testing device and method |
| CN114051275B (en) * | 2021-11-10 | 2023-09-15 | 大连市共进科技有限公司 | Access limiting method and device for small base station and computer equipment |
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