CN101686075A - Method for channel degrading, reexamining and upgrading of radio-frequency remote radio unit of base station - Google Patents
Method for channel degrading, reexamining and upgrading of radio-frequency remote radio unit of base station Download PDFInfo
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Abstract
The invention discloses a method for channel degrading of a radio-frequency remote radio unit of a base station, which judges an RRU channel of a radio-frequency remote radio unit is blocked or not according to the alignment condition of an antenna. The method comprises the following steps: when a cell is established or reconfigured, calculating an amplitude threshold value of the automatic blocking of the channel; carrying out alignment of the antenna; judging whether to request a base band unit (BBU) to block the channel or not by the RRU according to an antenna alignment channel magnitude-phase estimating result by combining the amplitude threshold value of the automatic blocking of the channel, and if so, executing a next step; deciding whether to block the channel or not by the BBU; if the BBU decides to block the channel, then executing a next step; adjusting a shaping value of the intelligent antenna and turning off a corresponding RRU channel power supply by the BBU. The invention has simplicity, high efficiency and strong practicability.
Description
Technical field
The present invention relates to adopt the wireless communication system of multichannel technology, relate in particular to the degrade method of (judgement channel failure and with this passage obturation) and regularly carry out the passage further consultation and rise the method for matter (separating inaccessible passage) of a kind of TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) radio communication system base station RRU (Remote Radio Unit) passage.
Background technology
TD-SCDMA antenna for base station battle array generally is divided into line array and two kinds of structures of ring array, corresponding two kinds of configurations, a kind of is the smart antenna configuration of the even linear array (every sector comprises 4,6 or 8 array elements (passage)) of 3 (many) sectors covering, and a kind of is the smart antenna configuration that 8 array element isometric circle battle array multi-beam omnidirectionals cover.Array each passage in base station comprises transceiver (containing digital intermediate frequency), feeder cable and outdoor unit.Smart antenna requires each array element (passage) consistent, but base station to reality, the radio receiving-transmitting unit of each bar path can not be all identical, and its performance will be in time, factors vary such as operation level and environmental condition, therefore must carry out real-time automatic calibrating (is referred to as intelligent antenna calibration, abbreviate antenna calibration as), otherwise the uplink and downlink beam forming will be had a strong impact on.
The radio frequency remote technology makes the BBU (baseband pool unit) of base station finish the processing of baseband signal, and the RRU of base station realizes radio frequency processing and signal amplifying function, connects by optical fiber between RRU and the BBU.
In general, the power amplifier of radio communication system base station RRU/other devices of the relative base station of LNA device are fragile.TD-SCDMA system base-station RRU generally places outdoor, safeguards difficulty relatively, power amplifier/LNA part or other device failure, and maintenance of works is more loaded down with trivial details and consuming time, and is bigger to normal service impact.In addition, during abnormal conditions, the temperature of power amplifier and LNA is too high, and must close this passage this moment, otherwise fragile power amplifier and LNA.At the TD-SCDMA system is the channel wireless radio multi system, its base station RRU port number is many, RRU occur that less passage damages, channel temperature is too high or other abnormal conditions under, can substantially normally move for guaranteeing business, general consideration is carried out obturation automatically with faulty channel, utilizes other passages to carry on business.
At publication number is CN101080031A, and name is called in the patent application of " intelligent antenna calibration system of baseband remote technology and method thereof ", has proposed based on the antenna calibration result, according to compensation for calibrating errors factor control antenna state, promptly opens or closes antenna.This method is complicated, and is not too practical, and considers not consider that other need change the factor of channel status.
Summary of the invention
The technical problem to be solved in the present invention is exactly to propose that a kind of base station radio frequency remoter unit channel degrades and the passage further consultation, rise the method for matter, and overcoming does not have simply, practicably carries out the defective that passage degrades and rises the matter method in the prior art.
In order to solve the problems of the technologies described above, the invention provides the method that a kind of base station radio frequency remoter unit channel degrades, according to the situation of antenna calibration, judge whether the radio frequency remote unit RRU passage that need automatically close up, described method comprises the steps:
(1) sub-district is set up or during reprovision, is calculated the amplitude threshold value that passage automatically closes up;
(2) carry out antenna calibration;
(3) RRU is according to antenna calibration passage width of cloth phase estimated result, and in conjunction with the amplitude threshold value that passage automatically closes up, whether judgement asks inaccessible passage to baseband pool unit BBU, if then carry out next step;
(4) BBU decision inaccessible passage whether; If the inaccessible passage of decision is then carried out next step;
(5) BBU adjusts the intelligent antenna figuration weights, turn-offs corresponding RRU passage power supply.
Further, in the described step (1), the situation of the training sequence level that sends during according to the gain-adjusted link setting that transmits and receives passage after the foundation of sub-district, RRU boresight antenna mouth and the gain of exterior aerial antenna opening feeder line, coupling network gain and antenna calibration, the roughly numerical value of amplitude when calculating uplink antenna calibration and estimating mutually, the high and low threshold value of amplitude of automatically closing up then according to the standard setting passage of judgement channel failure with the uplink/downlink antenna calibrated channel width of cloth.
Further, in the described step (2), RRU is gone up all effective carrier waves carry out antenna calibration with effective passage.
Further, in the described step (3), RRU carries out the inaccessible request of passage as follows and judges:
To each carrier wave when inferior participation antenna calibration, certain passage transmission channel antenna calibration amplitude estimation value satisfies less than the amplitude threshold ones of automatically closing up of transmission channel simultaneously or when satisfying condition greater than the amplitude wealthy family limit value that automatically closes up of transmission channel simultaneously, just asks BBU obturation transmission channel;
To each carrier wave when inferior participation antenna calibration, certain passage receive path antenna calibration amplitude estimation value satisfies less than the amplitude threshold ones of automatically closing up of receive path simultaneously or when satisfying condition greater than the amplitude wealthy family limit value that automatically closes up of receive path simultaneously, just asks BBU obturation receive path.
Further, in the described step (3), when antenna calibration needs the request channel inaccessible, by alarm, the RRU state reports or the mode of BBU poll RRU state notifies BBU to carry out the judgement of passage obturation.
Further, in the described step (4), whether BBU decision inaccessible passage, is divided into following three kinds of situations:
Situation 1:BBU judgement then can not be provided normal business as if passage by obturation, then not inaccessible passage, i.e. and the inaccessible request of passage is rejected;
Situation 2:BBU has only a side to need under the inaccessible situation the equal obturation of passage that transmits and receives of this passage to be fallen at the passage that transmits and receives of certain passage;
Situation 3:BBU has only a side to need under the inaccessible situation at the passage that transmits and receives of certain passage, the passage of only inaccessible emission or receive direction.
Further, in the described step (5), if certain passage is automatically closed up, then BBU adjusts the intelligent antenna figuration weights, and notifies RRU to remove to enable and turn-off the reception of this passage or the power supply of emission or reception and transmission channel, makes it out of service.
Further, also, judge whether the RRU passage that to automatically close up, comprise the steps: according to the situation of power amplifier and LNA temperature
(1), determines the temperature threshold values of its normal operation according to the characteristic of power amplifier and LNA;
(2) carry out power amplifier and LNA temperature detection;
(3) according to power amplifier and LNA temperature detection value and temperature threshold values, whether judgement asks inaccessible passage, if then carry out next step;
(4) BBU decision inaccessible passage whether; If the inaccessible passage of decision is then carried out next step;
(5) BBU adjusts the intelligent antenna figuration weights, turn-offs corresponding RRU passage power supply.
In order to solve the problems of the technologies described above, the present invention also provides the further consultation of a kind of base station radio frequency remoter unit channel, rises the method for matter, if estimated to cause the passage obturation by the antenna calibration passage, then comprises the steps:
When (a) sub-district was moved, RRU self separated inaccessible by the power supply of inaccessible passage;
(b) described passage and other passages are carried out the estimation of antenna calibration passage together;
(c) RRU separates inaccessible amplitude threshold value according to each carrier wave antenna calibration passage width of cloth phase estimated result automatically in conjunction with passage, and whether judgement asks to separate inaccessible passage, if then carry out next step;
(d) BBU separates inaccessible request according to the passage of RRU, and whether decision separates inaccessible passage; If inaccessible passage is separated in decision, then BBU adjusts the figuration parameter, and RRU opens the passage power supply; Otherwise, the inaccessible again passage of temporarily separating obturation because of further consultation.
Further, when sub-district foundation or reprovision, calculate described passage and separate inaccessible amplitude threshold value automatically.
Further, if the situation of power amplifier and LNA temperature causes the passage obturation, then comprise the steps:
When (A) sub-district is moved, carry out the temperature detection of power amplifier and LNA;
(B) if power amplifier and LNA temperature detection value are lower than power amplifier and LNA temperature threshold values, then RRU request BBU separates inaccessible this passage;
(C) BBU separates inaccessible request according to the passage of RRU, and whether decision separates inaccessible passage; If then carry out next step;
(D) BBU adjusts the figuration parameter, and RRU opens the power supply of described passage.
The present invention proposes automatically close up method and the corresponding faulty channel further consultation of a kind of RRU channel failure based on antenna calibration, temperature detection and conciliates inaccessible method, and is simple, efficient, and practical.
Description of drawings
Fig. 1 is a TD-SCDMA system base-station RRU smart antenna uplink antenna calibration structure;
Fig. 2 is a TD-SCDMA system base-station RRU smart antenna downlink antenna calibration structure;
Fig. 3 be the embodiment of the invention carry out the schematic flow sheet that the RRU passage degrades according to antenna calibration;
Fig. 4 be the embodiment of the invention carry out the schematic flow sheet that the RRU passage degrades according to temperature detection;
Fig. 5 is that the antenna calibration passage of the embodiment of the invention is estimated to cause the passage single further consultation when passage is inaccessible and risen the matter schematic flow sheet;
To be that the temperature of the embodiment of the invention is too high cause the passage single further consultation when passage is inaccessible and rise the matter schematic flow sheet Fig. 6.
Embodiment
In the present invention, by auxiliary detection and the judgement of finishing the RRU channel failure of antenna calibration, and then realize that passage automatically closes up and the further consultation faulty channel.
In addition, the present invention also proposes the situation by RRU power amplifier and LNA temperature detection, realizes that passage automatically closes up and the further consultation faulty channel.
The present invention is described in detail below in conjunction with drawings and the specific embodiments.
Antenna calibration generally is divided into three phases: the passage width of cloth estimates that mutually (width of cloth that carries out passage by the mode that sends and reclaim training sequence is estimated mutually), channel status judge that (judging whether channel status satisfies the condition that the width of cloth is adjusted mutually) and the passage width of cloth adjust (being adjusted to the width of cloth of each passage consistent mutually by certain rule) mutually.
Antenna calibration designs for adjusting each transceiver channel amplitude-phase consistency, but can assist detection and the judgement of finishing the RRU channel failure in real work, just can realize that by means of this result passage automatically closes up and the function of further consultation faulty channel.
General RRU antenna calibration physical link moves towards as Fig. 1～(here, data feedback channel is a receive path, and down going channel is a transmission channel, hereinafter no longer distinguishes) shown in Figure 2:
Wherein, CtrlBrd: control board is used for controlling functions such as optical fiber-RRUIQ data transaction, base band-intermediate frequency conversion (up-conversion and down-conversion), radio frequency control, antenna calibration and calibration of power control (generate the calibration training sequence, send the calibration training sequence, receive calibration training sequence go forward side by side row of channels estimations, the adjustment mutually of the passage width of cloth, power detection and gain adjustment etc.), AGC (automatic gain control) adjustment;
TRX_TXn: passage n sender, n are got 1...4 (4 bay), 1...6 (6 bay) or 1...8 (8 bay), down together;
TX_cal: uplink antenna calibration training sequence transmission channel;
RX_cal: uplink/downlink antenna calibration training sequence receive path;
PAn: passage n power amplifier;
TRX_RXn: passage n receiver;
LNAn: passage n low noise amplifier;
FIL/FILn: filter.
Exterior aerial/coupling network: coupling network is positioned at exterior aerial inside, is used to the calibrating signal that is coupled.The RRU antenna opening uses feeder cable to be connected with exterior aerial array antenna mouth.The feeder line of exterior aerial and connection RRU is called antenna-feedback system.
As shown in Figure 1, during the uplink antenna calibration, CtrlBrd generates and sends training sequence, send to the boresight antenna mouth of exterior aerial through TX_cal, send to each receive path through behind the coupling network, training sequence is received by CtrlBrd behind the LNA of each receive path and TRX_RX, and CtrlBrd carries out the receive path width of cloth and estimates mutually and adjust magnitude-phase characteristics, makes consistent between receive path.
As shown in Figure 2, during the uplink/downlink antenna calibration, CtrlBrd generates and sends training sequence, send to corresponding exterior aerial antenna opening through each transmission channel TRX_TX, PA, coupling network is coupled and sends to the boresight antenna mouth behind this n road signal, through being received by CtrlBrd behind the calibrated channel RX_cal, CtrlBrd carries out the transmission channel width of cloth and estimates mutually and adjust magnitude-phase characteristics, makes between transmission channel consistent.
Concerning operating TD-SCDMA system base-station, " passage " not only refers to the passage of RRU, also will comprise antenna-feedback system, and these two parts are formed the transmitting-receiving path of integral baseband signal and radiofrequency signal.The passage that antenna calibration experienced just in time can cover these two parts, therefore is suitable as the foundation of judging the passage quality fully.
As shown in Figure 3, the embodiment of the invention carries out the RRU passage according to antenna calibration and degrades and comprise the steps:
According to the gain-adjusted link setting that transmits and receives passage after the foundation of sub-district, RRU boresight antenna mouth and the gain of exterior aerial antenna opening feeder line, the situation of the training sequence level that sends when coupling network gain and antenna calibration, the roughly numerical value of amplitude in the time of can calculating uplink antenna calibration and estimate mutually with the uplink/downlink antenna calibrated channel width of cloth, note is NAc_Rx_Std and NAc_Tx_Std respectively, then according to the standard of judging channel failure (such as, with standard range value deviation xdB) set the passage inaccessible amplitude height that automatically closes up/separate, threshold ones: NAc_Rx_Thres_High (receive path automatically close up/separate inaccessible amplitude wealthy family limit value) and NAc_Rx_Thres_Low (receive path automatically close up/separate inaccessible amplitude threshold ones) and NAc_Tx_Thres_High (transmission channel automatically close up/separate inaccessible amplitude wealthy family limit value) and NAc_Tx_Thres_Low the amplitude threshold ones of obturation (transmission channel automatically close up/separate);
In the present embodiment, it is identical that the amplitude threshold value that passage automatically closes up is separated inaccessible amplitude threshold value automatically with passage, when practical application, also can be arranged to different values, calculates respectively in this step;
Step 302 is carried out antenna calibration;
Last all the effective carrier waves (promptly being in the carrier wave of running status) of RRU and effective passage (promptly being in the passage of running status) are carried out antenna calibration; Calibration can periodically be carried out or manually initiate from OMC (operation maintenance center).
Suppose that passage n is on carrier wave m, descending width of cloth phase estimated result range value is respectively NAc_Carrm_Rxn and NAc_Carrm_Txn, and N is smart antenna array array element (passage) number, M is the maximum carrier number that RRU supports, then carrying out the inaccessible request of passage by following strategy judges: to working as inferior each carrier wave that participates in antenna calibration, passage n transmission channel antenna calibration amplitude estimation value satisfies less than NAc_Tx_Thres_Low simultaneously or when satisfying condition greater than NAc_Tx_Thres_High simultaneously (transmission channel gained low or too high), just asks BBU obturation transmission channel; To each carrier wave when inferior participation antenna calibration, passage n receive path antenna calibration amplitude estimation value satisfies less than NAc_Rx_Thres_Low simultaneously or when satisfying condition greater than NAc_Rx_Thres_High simultaneously (receive path gained low or too high), just asks BBU obturation receive path;
1 time or repeatedly continuous antenna calibration are all needed under the situation of request channel obturation, by alarm, the RRU state reports or the mode of BBU poll RRU state notifies BBU to carry out the judgement of passage obturation.Adopting the mode of 1 judgement is to consider the timeliness of judgement, in order to avoid passage damage discovery is untimely, influences regular traffic for a long time.Repeatedly the mode of cascading judgement is in order to prevent erroneous judgement.Can according to circumstances select during specific implementation.
Whether BBU decision inaccessible passage, can be divided into three kinds of situations:
Situation 1:BBU judgement then can not be provided normal business as if passage by obturation, then not inaccessible passage, i.e. and the inaccessible request of passage is rejected;
Situation 2:BBU transmits and receives passage at passage n and has only a side to need under the inaccessible situation the equal obturation of passage that transmits and receives of this passage to be fallen;
Situation 3:BBU transmits and receives passage at passage n and has only a side to need under the inaccessible situation, the passage of only inaccessible emission or receive direction;
Situation 3 has provided the mode of reception and the unidirectional obturation of transmission channel, and this needs base band that the inconsistent situation of uplink and downlink port number is carried out particular procedure;
Above-mentioned 3 kinds of situations can be handled by the strategy that sets in advance by BBU;
If passage n is automatically closed up, then BBU adjusts the intelligent antenna figuration weights, and notifies RRU to remove to enable and turn-off the reception of passage n or the power supply of emission or reception and transmission channel, makes it out of service, and this passage of prompting user is automatically closed up.
In addition, as shown in Figure 4, can also judge whether the RRU passage that to automatically close up, comprise the steps: according to the situation of power amplifier and LNA temperature
Step 401 during the RRU design, according to the characteristic of power amplifier and LNA, is determined the temperature threshold values of its normal operation;
Step 402 is carried out power amplifier and LNA temperature detection;
Can periodically carry out the temperature detection of power amplifier and LNA, in the short time repeatedly continuous detecting average;
Power amplifier and LNA temperature detection value are the mean value of repeated detection value in the short time, and this value is then directly asked the reception and the transmission channel of inaccessible this passage if surpass power amplifier and LNA temperature threshold values;
Wherein, above-mentioned steps 404～405 is similar with step 304～305, no longer describes in detail herein.
In actual applications, antenna calibration and power amplifier and LNA temperature detection can be combined application, judge whether passage needs to automatically close up.
Passage by obturation after, the passage further consultation of special time generally is provided, whether recover normal condition in order to judge passage.
As shown in Figure 5, the antenna calibration passage of the embodiment of the invention is estimated to cause the passage single further consultation when passage is inaccessible and is risen matter and comprises the steps:
The further consultation of the passage obturation that the detected channel failure of antenna calibration is caused, the time generally was selected in the less moment of traffic carrying capacity (such as, 2:00 AM), and blanking time is longer, such as 1 day; During further consultation, open by the power supply of inaccessible passage;
Step 502 and other passages carry out the antenna calibration passage together and estimate;
RRU separates inaccessible amplitude threshold value according to each carrier wave antenna calibration passage width of cloth phase estimated result automatically in conjunction with passage, and whether judgement asks to separate inaccessible passage, if then carry out next step;
Generally speaking, BBU directly allows the passage of RRU to separate inaccessible request;
If passage n is separated obturation automatically, then BBU adjusts the intelligent antenna figuration weights, and notifies RRU to enable and open the reception of passage n or the power supply of emission or reception and transmission channel, makes its operation;
As shown in Figure 6, the power amplifier of the embodiment of the invention and LNA temperature too high cause the passage single further consultation when passage is inaccessible and rise matter comprise the steps:
Step 601 during the operation of sub-district, is carried out the temperature detection of power amplifier and LNA;
To power amplifier and the too high passage obturation that causes of LNA temperature, short period is carried out further consultation at interval, such as at interval whether needs continued the inaccessible obturations (rising matter) of conciliating with LNA temperature detection value judgement passage according to power amplifier again in 4,8 hours, this time is also unsuitable too short, to avoid the frequent inaccessible obturation of conciliating of passage;
Step 602 is carried out passage and is separated inaccessible judgement;
If power amplifier and LNA temperature detection value (mean value of repeated detection value in the short time) are lower than power amplifier and LNA temperature threshold values, then RRU request BBU separates inaccessible this passage;
Generally speaking, BBU directly allows the passage of RRU to separate inaccessible request;
If passage n is separated obturation automatically, then BBU adjusts the intelligent antenna figuration weights, and notifies RRU to enable and open the reception of passage n or the power supply of emission or reception and transmission channel, makes its operation.
In addition, also have other the passage inaccessible situation of need automatically closing up/separate, as the passage occlusion condition that abnormal conditions such as base station equipment certain device, software cause, its subsequent processes is similar, repeats no more herein.
The present invention directly adopts original passage estimated result to carry out the judgement that passage degrades, rises matter and further consultation, and is simple, efficient; And the present invention has also considered the situation that multichannel more need automatically close up, as the too high passage obturation that causes of channel temperature, and the perhaps passage occlusion condition that causes of abnormal conditions such as base station equipment certain device, software; Simultaneously, the present invention has also proposed to transmit and receive the unidirectional independent inaccessible mode of passage, and the method for channel status further consultation.
In addition, what propose among the present invention degrades, rises matter, transmits and receives content such as the unidirectional independent obturation of passage and be applicable to multichannel RRU system, and not only is applicable to the TD-SCDMA system, and other wireless communication systems that adopt much channel communication are also had reference function.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (11)
1, the method that degrades of a kind of base station radio frequency remoter unit channel is characterized in that according to the situation of antenna calibration, judge whether the radio frequency remote unit RRU passage that need automatically close up, described method comprises the steps:
(1) sub-district is set up or during reprovision, is calculated the amplitude threshold value that passage automatically closes up;
(2) carry out antenna calibration;
(3) RRU is according to antenna calibration passage width of cloth phase estimated result, and in conjunction with the amplitude threshold value that passage automatically closes up, whether judgement asks inaccessible passage to baseband pool unit BBU, if then carry out next step;
(4) BBU decision inaccessible passage whether; If the inaccessible passage of decision is then carried out next step;
(5) BBU adjusts the intelligent antenna figuration weights, turn-offs corresponding RRU passage power supply.
2, the method for claim 1, it is characterized in that, in the described step (1), the situation of the training sequence level that sends during according to the gain-adjusted link setting that transmits and receives passage after the foundation of sub-district, RRU boresight antenna mouth and the gain of exterior aerial antenna opening feeder line, coupling network gain and antenna calibration, the roughly numerical value of amplitude when calculating uplink antenna calibration and estimating mutually, the high and low threshold value of amplitude of automatically closing up then according to the standard setting passage of judgement channel failure with the uplink/downlink antenna calibrated channel width of cloth.
3, the method for claim 1 is characterized in that, in the described step (2), RRU is gone up all effective carrier waves carry out antenna calibration with effective passage.
4, the method for claim 1 is characterized in that, in the described step (3), RRU carries out the inaccessible request of passage as follows and judges:
To each carrier wave when inferior participation antenna calibration, certain passage transmission channel antenna calibration amplitude estimation value satisfies less than the amplitude threshold ones of automatically closing up of transmission channel simultaneously or when satisfying condition greater than the amplitude wealthy family limit value that automatically closes up of transmission channel simultaneously, just asks BBU obturation transmission channel;
To each carrier wave when inferior participation antenna calibration, certain passage receive path antenna calibration amplitude estimation value satisfies less than the amplitude threshold ones of automatically closing up of receive path simultaneously or when satisfying condition greater than the amplitude wealthy family limit value that automatically closes up of receive path simultaneously, just asks BBU obturation receive path.
5, the method for claim 1 is characterized in that, in the described step (3), when antenna calibration needs the request channel inaccessible, by alarm, the RRU state reports or the mode of BBU poll RRU state notifies BBU to carry out the judgement of passage obturation.
6, the method for claim 1 is characterized in that, in the described step (4), whether BBU decision inaccessible passage, is divided into following three kinds of situations:
Situation 1:BBU judgement then can not be provided normal business as if passage by obturation, then not inaccessible passage, i.e. and the inaccessible request of passage is rejected;
Situation 2:BBU has only a side to need under the inaccessible situation the equal obturation of passage that transmits and receives of this passage to be fallen at the passage that transmits and receives of certain passage;
Situation 3:BBU has only a side to need under the inaccessible situation at the passage that transmits and receives of certain passage, the passage of only inaccessible emission or receive direction.
7, the method for claim 1 is characterized in that, in the described step (5), if certain passage is automatically closed up, then BBU adjusts the intelligent antenna figuration weights, and notifies RRU to remove to enable and turn-off the reception of this passage or the power supply of emission or reception and transmission channel, makes it out of service.
8, the method for claim 1 is characterized in that, also according to the situation of power amplifier and LNA temperature, judges whether the RRU passage that need automatically close up, and comprises the steps:
(1), determines the temperature threshold values of its normal operation according to the characteristic of power amplifier and LNA;
(2) carry out power amplifier and LNA temperature detection;
(3) according to power amplifier and LNA temperature detection value and temperature threshold values, whether judgement asks inaccessible passage, if then carry out next step;
(4) BBU decision inaccessible passage whether; If the inaccessible passage of decision is then carried out next step;
(5) BBU adjusts the intelligent antenna figuration weights, turn-offs corresponding RRU passage power supply.
9, a kind of base station radio frequency remoter unit channel further consultation, rise the method for matter,, then comprise the steps: if estimate to cause the passage obturation by the antenna calibration passage
When (a) sub-district was moved, RRU self separated inaccessible by the power supply of inaccessible passage;
(b) described passage and other passages are carried out the estimation of antenna calibration passage together;
(c) RRU separates inaccessible amplitude threshold value according to each carrier wave antenna calibration passage width of cloth phase estimated result automatically in conjunction with passage, and whether judgement asks to separate inaccessible passage, if then carry out next step;
(d) BBU separates inaccessible request according to the passage of RRU, and whether decision separates inaccessible passage; If inaccessible passage is separated in decision, then BBU adjusts the figuration parameter, and RRU opens the passage power supply; Otherwise, the inaccessible again passage of temporarily separating obturation because of further consultation.
10, method as claimed in claim 9 is characterized in that, when sub-district foundation or reprovision, calculates described passage and separates inaccessible amplitude threshold value automatically.
11, method as claimed in claim 9 is characterized in that, if the situation of power amplifier and LNA temperature causes the passage obturation, then comprises the steps:
When (A) sub-district is moved, carry out the temperature detection of power amplifier and LNA;
(B) if power amplifier and LNA temperature detection value are lower than power amplifier and LNA temperature threshold values, then RRU request BBU separates inaccessible this passage;
(C) BBU separates inaccessible request according to the passage of RRU, and whether decision separates inaccessible passage; If then carry out next step;
(D) BBU adjusts the figuration parameter, and RRU opens the power supply of described passage.
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| CN200810149381A CN101686075B (en) | 2008-09-25 | 2008-09-25 | Method for channel degrading, reexamining and upgrading of radio-frequency remote radio unit of base station |
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| CN200810149381A CN101686075B (en) | 2008-09-25 | 2008-09-25 | Method for channel degrading, reexamining and upgrading of radio-frequency remote radio unit of base station |
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| JP2013535124A (en) * | 2010-06-03 | 2013-09-09 | ノキア シーメンス ネットワークス オサケユキチュア | Base station calibration |
| CN104322112A (en) * | 2012-12-31 | 2015-01-28 | 华为技术有限公司 | Channel control method and device |
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