CN101281997B - Intelligent antenna fault processing method and device - Google Patents
Intelligent antenna fault processing method and device Download PDFInfo
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- CN101281997B CN101281997B CN2007100651642A CN200710065164A CN101281997B CN 101281997 B CN101281997 B CN 101281997B CN 2007100651642 A CN2007100651642 A CN 2007100651642A CN 200710065164 A CN200710065164 A CN 200710065164A CN 101281997 B CN101281997 B CN 101281997B
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Abstract
The invention discloses a fault processing method of an intelligent antenna, which relates to the intelligent antenna technology, and the method stores the weight coefficient of a broadcast channel of a reconstruction array consisting of continuous antenna units, and also comprises the following steps: A. judging whether the antenna unit fails or not, if not, returning to the step A for continuous judgment, and if so, selecting continuous antenna units to form a reconstruction array; B. and adjusting the reconstruction array according to the stored broadcast channel weighting coefficient corresponding to the selected reconstruction array, and transmitting and receiving signals. The invention also discloses a device for processing the intelligent antenna fault. The method and the device can reduce the pre-storage amount of the array broadcast channel weighting coefficient, are simple to implement, and can correspondingly select the broadcast channel weighting coefficient only by judging the number of the continuous antenna units.
Description
Technical field
The present invention relates to intelligent antenna technology, relate in particular to a kind of smart antenna fault handling method and device.
Background technology
Along with developing rapidly of mobile communication; Increasing business will be carried out through the mode of radio wave; Intelligent antenna technology will be to improve one of effective method of network capacity; Smart antenna is the array antenna that the gain characteristic of radiation pattern can be carried out adaptive change in real time according to RST, obtains directivity through one group of fixed antenna unit that has the programmable electronic phase relation, and can obtain the directional characteristic of each link between base station and the travelling carriage simultaneously.When some antenna elements of smart antenna broke down, the wave beam of the broadcast channel that can generate the radiation pattern synthesis that utilizes aerial array exerted an influence.Because the fault of antenna element, actual broadcast channel antenna pattern can produce difference with preset broadcast channel antenna pattern, shown in Figure 1A and Figure 1B.Figure 1A is the antenna pattern of broadcast channel under the non-failure conditions, and Figure 1B is an antenna element 1 and the break down antenna pattern of broadcast channel under the situation of 4 two antenna elements of antenna element.Can find out that from Figure 1B antenna element 1, antenna element 4 break down broadcast channel is covered the destruction of causing.Usually, said broadcast channel also can be called common signal channel.
At present, when the antenna element of smart antenna broke down, best solution had two kinds: a kind of is to carry out the figuration of broadcast channel again according to remaining antenna element; Another kind is, launches with the single antenna unit, because generally speaking, the single antenna unit satisfies the broadcast channel coverage.But all there is deficiency in existing two kinds of methods:
For first method, one side needs the real-time optimization antenna pattern maybe will optimize good antenna pattern to be stored in the antenna system, no matter to be real-time optimization or pre-stored, all need very complicated operations, amount of calculation and/or memory space.Specifically; Considering the symmetry of fan antenna array, is example with the unit 8 array antenna, so; Fault antenna element quantity is as shown in table 1 with the optimum organization quantity of residue array; Can find out that from table 1 along with the increase of fault antenna element quantity, the compound mode that needs to optimize array also gets more and more.On the other hand, the situation of not all new array can be optimized the antenna pattern that to be applicable to communication system, for example: if the antenna element spacing of new array is too big, just be not suitable for carrying out the synthetic of broadcast channel antenna pattern.
| Fault antenna element quantity | Need to optimize the combination of |
| 1 | 4 |
| 2 | 16 |
| 3 | 28 |
| 4 | 38 |
Table 1
For second method, adopt the mode of single antenna unit emission to abandon the benefit that array antenna power merges fully, this is a kind of waste for the communication system of using array antenna to receive and dispatch, has also dwindled the coverage of communication system simultaneously.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of smart antenna fault handling method and device, can be when antenna element break down, and the reconstruct aerial array obtains being applicable to the antenna pattern of communication system.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of smart antenna fault handling method is stored the broadcast channel weight coefficient of all restructuring arrays of being made up of continuous antenna element, and this method is further comprising the steps of:
A, judge whether to occur the antenna element fault,, then return steps A and continue to judge if occur, if, then select trouble-free continuous antenna element to form restructuring array;
B, carry out the transmitting-receiving of signal according to the broadcast channel weight coefficient of the corresponding selected restructuring array of being stored adjustment restructuring array.
In the technique scheme, the antenna pattern that the broadcast channel weight coefficient of the restructuring array of said storage is corresponding satisfies two conditions: this antenna pattern is confirmed the wave beam requirement according to the covering demand; And the loss of the weighted power of this antenna pattern is smaller or equal to the common logarithm of continuous antenna element number.
And, the minimum antenna pattern of weighting loss in the antenna pattern of the restructuring array that the continuous antenna element of equal number is formed.
Restructuring array in the steps A is the maximum reconstructed array of being made up of trouble-free continuous antenna element.
Antenna element failure judgment in the steps A is specially: utilize the free time of protection time slot to carry out the estimation of antenna element channel response, if the response of antenna element passage is lower than certain value, confirm that then this antenna element is the fault antenna element.
The invention also discloses a kind of smart antenna fault treating apparatus, this device comprises:
Judge module is used to judge whether to occur the antenna element fault, when the antenna element fault occurring, sends instruction to selecting module;
Select module, form restructuring array according to the trouble-free continuous antenna element of Instruction Selection that judge module sends;
Memory module is used for storing the broadcast channel weight coefficient of all restructuring arrays of being made up of continuous antenna element;
The signal transmitting and receiving module according to selecting the selected restructuring array of module to obtain the respective broadcast channels weight coefficient of memory module stored, is adjusted selected restructuring array, utilizes the restructuring array of confirming to carry out the transmitting-receiving of signal.
In the technique scheme, said restructuring array is the maximum reconstructed array of being made up of trouble-free continuous antenna element.
The free time of said judge module utilization protection time slot carries out the antenna element channel response and estimates, whether is lower than certain value according to the response of antenna channels and confirms whether antenna element is the fault antenna element.
Method and apparatus of the present invention, when antenna element breaks down, owing to select trouble-free maximum continuous antenna element to form restructuring array, thus can access the antenna pattern that is applicable to communication system.And; Since the present invention only need store restructuring array that the several successive antenna element forms the broadcast channel weight coefficient, significantly reduced the reserves that prestore of aerial array broadcast channel weight coefficient, such as: for 8 antenna element linear arrays; Broadcast channel weight coefficient when needing at most only the continuous antenna element of 2～8 of storages; That is: only store the broadcast channel weight coefficient of 2 continuous antenna elements, the broadcast channel weight coefficient of 3 continuous antenna elements ..., the broadcast channel weight coefficient of 8 continuous antenna elements; Implement simply, only need the continuous antenna element number of judgement just can correspondingly select the broadcast channel weight coefficient.
Description of drawings
Figure 1A is the antenna pattern of broadcast channel under the non-failure conditions;
Figure 1B is the break down antenna patterns of broadcast channel under the situation of two antenna elements;
Fig. 2 is the realization flow sketch map of the inventive method.
Embodiment
Smart antenna fault handling method provided by the present invention; Its basic ideas are: the broadcast channel weight coefficient of all restructuring arrays of being made up of continuous antenna element of pre-stored; When the antenna element fault warning occurring; In the residue antenna element, seek trouble-free continuous antenna element and form the maximum reconstructed array, utilize the respective broadcast channels weight coefficient of new restructuring array and pre-stored to carry out the weighting emission.
Fig. 2 is a smart antenna fault handling method realization flow sketch map of the present invention, and is as shown in Figure 2, and this method may further comprise the steps:
The broadcast channel weight coefficient of all restructuring arrays of forming by continuous antenna element of step 101, pre-stored;
Here, said judgement is adopted usually and is utilized the free time of protection time slot to carry out antenna element channel response estimation approach, if the response of antenna element passage is lower than certain value, confirms that then this antenna element is the fault antenna element.Wherein, said definite value is relevant with the coverage and the aerial array itself of applied communication system, generally confirms through emulation and test.
Further specify the implementation procedure and the principle of the inventive method below.
In flow process shown in Figure 2, the antenna pattern that the broadcast channel weight coefficient of the restructuring array of pre-stored described in the step 101 is corresponding should satisfy following requirement:
Suppose that the antenna element number is N, the restructuring array of pre-stored includes M antenna element continuously, and 1 < M≤N,
1) confirm the wave beam requirement according to the covering demand, for example: the wave beam fluctuation is less than 3dB in the 65 degree scopes, and the 3dB width range be [65 degree, 70 degree], and the 6dB scope be [85 degree, 90 degree], and the 10dB scope is [110 spend, and 120 spend] etc.;
2) the total transmitting power of weighting is higher than single antenna unit transmitting power, and for example: when M=2, the weighted power loss is less than 3dB.Wherein, the weighted power loss can use following formula to calculate:
Wherein, ‖ ‖ representes the norm of vector, promptly
Be the broadcast channel weight coefficient, so condition 2) requirement be:
P
l≤101g(M)
If can be met the aerial array antenna pattern of above-mentioned requirements; Then the broadcast channel weight coefficient with the corresponding antenna array is stored in the antenna system; The broadcast channel weight coefficient of the aerial array of forming for the continuous antenna element of equal number, then above-mentioned requirements and the minimum broadcast channel weight coefficient of antenna pattern weighted power loss are satisfied in storage.
If can not be met the antenna pattern of above-mentioned requirements, then the broadcast channel weight coefficient is set to the broadcast channel weight coefficient of single antenna unit (M=1) emission, promptly w=[1,0 ..., 0]
T
In the said step 102, judge whether to occur the antenna element fault.Smart antenna need be estimated the response of each antenna element, and then accomplish the judgement of calibration and antenna condition.For example, utilize the free time of protection time slot to carry out antenna channels response estimation,, judge that then this antenna element lost efficacy, be the fault antenna element, send warning information if the response of antenna channels is lower than certain value in the TD-SCDMA system.Wherein, said definite value is generally confirmed by emulation and test.When the antenna element fault warning appearred in antenna system, then execution in step 103 was carried out the selection of restructuring array, if antenna element does not break down, then rested on this step and continued to judge.
Said step 103, selection are used for the restructuring array of the trouble-free continuous antenna element composition of broadcast transmission, and said continuous restructuring array is the maximum continuous restructuring array; The restructuring array of promptly forming by the trouble-free continuous antenna element of maximum quantity, for example: the state with ' 1 ' expression antenna element is a fault-free, the state of ' 0 ' expression antenna element is a fault; Be [0,1,1 then for a state; 1,1,1; 0,0] unit 8 aerial array, its restructuring array is: the 5 element antenna arrays that are made up of the 2nd antenna element to the 6 antenna elements; And be the unit 8 aerial array of [0,1,1,1,1,0,1,1] for a state, its restructuring array is: the 4 element antenna arrays that are made up of the 2nd antenna element to the 5 antenna elements.
In the said step 104, the broadcast channel weight coefficient adjustment restructuring array according to the corresponding selected restructuring array that prestores in the step 101 carries out the transmitting-receiving of signal.The antenna element quantity of supposing the restructuring array that step 103 obtains is Num_subarray, and then on this restructuring array of broadcast channel weight coefficient adjustment according to the continuous antenna restructuring array of Num_subarray of step 101 storage, other antenna element is closed.
The above-mentioned definite restructuring array of smart antenna using that the antenna element fault occurs communicates the reception and the transmission of system signal.
In order to realize said method of the present invention, the present invention also provides a kind of smart antenna fault treating apparatus, and this device comprises judge module, selects module, memory module and signal transmitting and receiving module.Wherein, judge module is used to judge whether to occur the antenna element fault, when the antenna element fault occurring, sends instruction to selecting module; Select module, the Instruction Selection maximum continuous antenna element that sends according to judge module is as restructuring array; Memory module is used for storing the broadcast channel weight coefficient of all continuous antenna restructuring arrays; The signal transmitting and receiving module according to selecting the selected restructuring array of module to obtain the respective broadcast channels weight coefficient of memory module stored, is adjusted selected restructuring array, utilizes the restructuring array of confirming to carry out the transmitting-receiving of signal.
Smart antenna need be estimated the response of each antenna element, and then accomplish the judgement of calibration and antenna condition.For example in the TD-SCDMA system; Utilize the free time of protection time slot to carry out antenna channels response estimation, if the response of antenna channels is lower than certain value, this value is generally definite through emulation and test; Then antenna pattern can distort; This antenna element lost efficacy, and was the fault antenna element, sent warning information.When the antenna element fault warning appears in antenna system; Judge module judges that antenna element breaks down; To selecting module to send instruction, select module according to the Instruction Selection restructuring array of receiving, the standard of selection is: the continuous antenna element of trouble-free maximum quantity is formed restructuring array; The signal transmitting and receiving module is obtained the respective broadcast channels weight coefficient of pre-stored in the memory module according to selecting the selected restructuring array of module, utilizes the restructuring array of confirming to carry out the transmitting-receiving of signal.
The above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.
Claims (7)
1. a smart antenna fault handling method is characterized in that, stores the broadcast channel weight coefficient of all restructuring arrays of being made up of continuous antenna element, and this method is further comprising the steps of:
A, judge whether to occur the antenna element fault,, then return steps A and continue to judge if occur, if, then select trouble-free continuous antenna element to form restructuring array;
B, carry out the transmitting-receiving of signal according to the broadcast channel weight coefficient of the corresponding selected restructuring array of being stored adjustment restructuring array,
Wherein, the antenna pattern that the broadcast channel weight coefficient of the restructuring array of said storage is corresponding satisfies two conditions:
Said antenna pattern is confirmed the wave beam requirement according to the covering demand; And the loss of the weighted power of said antenna pattern is smaller or equal to the common logarithm of continuous antenna element number.
2. smart antenna fault handling method according to claim 1 is characterized in that, said antenna pattern is: the minimum antenna pattern of weighting loss in the antenna pattern of the restructuring array that the continuous antenna element of equal number is formed.
3. smart antenna fault handling method according to claim 2 is characterized in that, restructuring array described in the steps A is the maximum reconstructed array of being made up of trouble-free continuous antenna element.
4. according to each described smart antenna fault handling method in the claim 1 to 3; It is characterized in that; The failure judgment of antenna element described in the steps A is specially: utilize the free time of protection time slot to carry out the estimation of antenna element channel response; If the response of antenna element passage is lower than certain value, confirm that then this antenna element is the fault antenna element.
5. a smart antenna fault treating apparatus is characterized in that, this device comprises:
Judge module is used to judge whether to occur the antenna element fault, when the antenna element fault occurring, sends instruction to selecting module;
Select module, form restructuring array according to the trouble-free continuous antenna element of Instruction Selection that judge module sends;
Memory module is used for storing the broadcast channel weight coefficient of all restructuring arrays of being made up of continuous antenna element;
The signal transmitting and receiving module according to selecting the selected restructuring array of module to obtain the respective broadcast channels weight coefficient of memory module stored, is adjusted selected restructuring array, utilizes the restructuring array of confirming to carry out the transmitting-receiving of signal,
Wherein, the antenna pattern that the broadcast channel weight coefficient of the restructuring array of said storage is corresponding satisfies two conditions:
Said antenna pattern is confirmed the wave beam requirement according to the covering demand; And the loss of the weighted power of said antenna pattern is smaller or equal to the common logarithm of continuous antenna element number.
6. smart antenna fault treating apparatus according to claim 5 is characterized in that, said restructuring array is the maximum reconstructed array of being made up of trouble-free continuous antenna element.
7. according to claim 5 or 6 described smart antenna fault treating apparatus; It is characterized in that; The free time of said judge module utilization protection time slot carries out the antenna element channel response and estimates, whether is lower than certain value according to the response of antenna channels and confirms whether antenna element is the fault antenna element.
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| CN2007100651642A CN101281997B (en) | 2007-04-05 | 2007-04-05 | Intelligent antenna fault processing method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101714879B (en) * | 2008-10-08 | 2013-03-20 | 扬智科技股份有限公司 | Smart Antenna Full-Frequency Scanning and Method for Adjusting Channel Parameters |
| CN102377467B (en) * | 2010-08-23 | 2015-02-04 | 中国移动通信集团公司 | Eight-antenna downlink control channel sending method and device |
| CN106803782B (en) * | 2015-11-26 | 2020-05-29 | 中兴通讯股份有限公司 | Channel rank reduction method and device for large-scale antenna system |
| WO2021062592A1 (en) * | 2019-09-30 | 2021-04-08 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for fault mitigation in base station |
| CN112595902B (en) * | 2020-12-24 | 2022-07-15 | 中国科学技术大学 | Method and device for fault diagnosis of array antenna system |
| US12095169B2 (en) * | 2021-03-31 | 2024-09-17 | Zebra Technologies Corporation | Systems and methods for enhanced fault tolerance for RFID phased array antennas |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1747569A (en) * | 2004-09-08 | 2006-03-15 | 中兴通讯股份有限公司 | Array channel correcting method and device for time-division and duplex intelligent antenna |
| CN1913402A (en) * | 2005-08-11 | 2007-02-14 | 中兴通讯股份有限公司 | Intelligent method for detecting antenna fault |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1747569A (en) * | 2004-09-08 | 2006-03-15 | 中兴通讯股份有限公司 | Array channel correcting method and device for time-division and duplex intelligent antenna |
| CN1913402A (en) * | 2005-08-11 | 2007-02-14 | 中兴通讯股份有限公司 | Intelligent method for detecting antenna fault |
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| JP特开2005-210377A 2005.08.04 |
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