CN109039484A - A method of antenna for base station operator is identified based on energy measuring - Google Patents
A method of antenna for base station operator is identified based on energy measuring Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/101—Monitoring; Testing of transmitters for measurement of specific parameters of the transmitter or components thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
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Abstract
The invention discloses the methods based on energy measuring identification antenna for base station operator, and the method steps are as follows: UAV flight's frequency spectrum detection module, and flight to antenna for base station face, distance is within 2m；Set frequency spectrum detection module starting working frequency 800MHz, cut-off working frequency 2700MHz and bandwidth of operation 1900MHz；Level threshold value is set, energy detection algorithm module is enabled；Frequency sweep mode is opened, record is greater than the spectral signal energy value and centre frequency of threshold value, generates 2*n array；As n > 1, adjust automatically threshold value repeats step 4)；As n=1, records center frequency, initial frequency and cutoff frequency, bandwidth of operation；Ground controlling terminal receives signal frequency information, compares three big operator's antenna for base station downlink working frequency ranges, identifies antenna for base station operator；Operation of the present invention is simple, can quickly identify antenna for base station operator.The present invention is suitable for identification antenna for base station operator.
Description
Technical field
The present invention relates to fields of communication technology, more particularly to a kind of based on energy measuring identification antenna for base station work
Frequency range, and then judge the technical field of antenna for base station operator.
Background technique
Currently, during base station construction addressing, often there is a case where base station carry multiple antenna for base station.Such as
Steel tower company co-construction and sharing type triangle-tube tower communication base station is equipped with stacked antenna mounting layer, is provided with multiple use on antenna mounting layer
In setting antenna and make the non-interfering antenna holding pole of signal transmitting and receiving, multiple telecom operators can be integrated in one.It is this to build
The mode of station can significantly save resource, cut operating costs, and improve the market competitiveness of operator.But it was safeguarded in communication
Cheng Zhong is difficult to differentiate which operator company each antenna for base station belongs to since the antenna for base station of communication base station carry is more.
Therefore, it is necessary to quickly identify antenna operator by technical approach.China Patent No.
201610377317.6, publication date on November 09th, 2016, a kind of entitled " communication base station antenna identification side of innovation and creation
Method ", which discloses a kind of communication base station antenna recognition method, and this method is right according to the antenna institute of communication base station
Common carrier, antenna band and the network formats answered are successively arranged side by side by corresponding level-one vitta, second level vitta and three-level vitta
Paste or be sprayed at the lateral side regions of antenna.Relevant staff according to the level-one vitta of antenna lateral side regions, second level vitta and
Three-level vitta is to distinguish the common carrier, antenna band and network formats that antenna is belonged to.
But this method has the following disadvantages in practice: since vitta is stuck or is sprayed on the side of antenna
Face region, one side maintenance personnel need to check that vitta is relatively difficult from ground in inspection；Still further aspect is due to base station day
Line exposing to the weather in the sky, vitta are possible to fade and are even destroyed and cause to record information inaccuracy；It needs to safeguard people
Member constantly detects antenna for base station information, maintenance vitta, and there are certain risks in maintenance process.
Summary of the invention
The present invention is dangerous in order to solve to encounter record information inaccuracy in maintenance personnel's identification antenna for base station operator
Property it is high, and identify difficult problem, provide a kind of method based on energy measuring identification antenna for base station operator, the party
Method is easy to operate, can quick and precisely measure the downlink working frequency range of antenna for base station, analyze and be recognized accurately belonging to antenna for base station
Operator, and it is highly-safe.
To realize aforementioned present invention purpose, the technical solution adopted is as follows: a kind of identify antenna for base station based on energy measuring
The method of operator realizes that specific step is as follows for this method:
A method of antenna for base station operator is identified based on energy measuring, realizes that specific step is as follows for this method:
1) according at the beginning of the minimum frequency of operation of 2G/3G/4G antenna for base station and maximum operation frequency setting spectrum monitoring module
Beginning working frequency 800MHz, cut-off working frequency 2700MHz and bandwidth of operation 1900MHz；
2) it is flown using UAV flight's spectrum monitoring module to antenna for base station to be measured, makes determining for spectrum monitoring module
It is in face state to antenna and antenna for base station to be measured, and with antenna for base station distance to be measured less than 2 meters；
3) according to COST231-HATA range attenuation formula predetermined threshold value, then start spectrum monitoring module energy
In detection algorithm, energy detection algorithm module by the signal received carry out energy measuring, detect spectral signal energy
Greater than the spectrum signal of threshold value；
4) open rapid frequency-sweeping mode, range of scanned frequencies be 800~2700MHz, to frequency range be 800~
Various spectrum signals in 2700MHz carry out detection and quickly capture；Being recorded in frequency range is detection in 800~2700MHz
To the value for the spectral signal energy for being greater than threshold value and centre frequency corresponding to it, the array (RX of a 2*n is formedn, fn)；
Wherein: RXn>=λ0；800MHz≤fn≤ 2700MHz；λ0For threshold value；RXnFor spectral signal energy, fnFor
RXnCorresponding spectral centroid frequency；N is the integer more than or equal to 1；
If 5) n > 1, adjust automatically threshold value λ0=λ0+(RXmax-RXmin)/2；Repeat step 4)；
Wherein: RXmaxFor array (RXn, fn) in spectral signal energy maximum value；RXminFor array (RXn, fn) in frequency spectrum
The minimum value of signal energy；
If 6) n=1, recording spectral centroid frequency corresponding to spectral signal energy at this time is ftar；Reset spectrum monitoring
The starting working frequency of module is ftar- 25MHz, cut-off working frequency are ftar+ 25MHz, bandwidth of operation 50MHz, it is automatic to adjust
Threshold value λ after whole0It is constant, complete frequency sweep；To obtain the starting working frequency of antenna for base station maximum functional signal to be measured, cut
Only working frequency, bandwidth of operation and signal spectrum Energy maximum value；
7) by unmanned plane wireless communication link by obtain antenna for base station maximum functional signal to be measured starting working frequency,
Cut-off working frequency, bandwidth of operation and signal spectrum Energy maximum value are transmitted to ground controlling terminal, pass through ground controlling terminal
The antenna for base station downlink working frequency range of each operator of automatic comparison, finally analyze operator belonging to antenna for base station to be measured,
Working form and frequency range.
The unmanned plane confirms the directional aerial and antenna for base station of spectrum monitoring module by UAV Video shooting module
Whether face state is in.
The most original value of the predetermined threshold value is set as -20dBm.
Beneficial effects of the present invention are as follows: the present invention uses energy detection algorithm, and dynamic adjusted threshold value reduces background
The influence of noise signal；It is flown using UAV flight's spectrum monitoring module to antenna for base station, detects aerial signal, it is convenient
Fast, it can greatly reduce the ambient noise that other neighbouring antenna for base station signals are used as, improve the validity of energy detection algorithm；?
Maintenance personnel's pro-active intervention, automatic identification antenna for base station signal frequency range and duty are not needed during self-adapting estimation
Formula, and finally determine antenna for base station operator.
Detailed description of the invention
Fig. 1 is working principle flow chart of the present invention；
Fig. 2 is embodiment energy detection algorithm schematic diagram.
Specific embodiment:
The present invention will be described in detail with reference to the accompanying drawings and detailed description.
Embodiment 1
Such as Fig. 1, a method of antenna for base station operator is identified based on energy measuring, realizes this method specific steps
It is as follows:
1) spectrum monitoring mould is preset according to the minimum frequency of operation of 2G/3G/4G antenna for base station and maximum operation frequency
Block initial operating frequency 800MHz, cut-off working frequency 2700MHz and bandwidth of operation 1900MHz；
2) spectrum monitoring module is arranged on unmanned plane in advance, is then flown using UAV flight's spectrum monitoring module
Near to antenna for base station to be measured, by the video capture module of unmanned plane, the image of captured in real-time antenna for base station returns image
Onto ground controlling terminal.The directional aerial and antenna for base station to be measured for confirming spectrum monitoring module are in face state, and with to
Antenna for base station distance is surveyed less than 2 meters；
3) according to COST231-HATA range attenuation formula predetermined threshold value, then start spectrum monitoring module energy
In detection algorithm, energy detection algorithm module by the signal received carry out energy measuring, detect spectral signal energy
Greater than the spectrum signal of threshold value；
4) open rapid frequency-sweeping mode, range of scanned frequencies be 800~2700MHz, to frequency range be 800~
Various spectrum signals in 2700MHz carry out detection and quickly capture；Being recorded in frequency range is detection in 800~2700MHz
To the value for the spectral signal energy for being greater than threshold value and centre frequency corresponding to it, the array (RX of a 2*n is formedn, fn)；
Wherein: RXn>=λ0；800MHz≤fn≤ 2700MHz；λ0For threshold value；RXnFor spectral signal energy, fnFor
RXnCorresponding spectral centroid frequency；N is the integer more than or equal to 1；
If 5) n > 1, adjust automatically threshold value λ0=λ0+(RXmax-RXmin)/2；Repeat step 4)；
Wherein: RXmaxFor array (RXn, fn) in spectral signal energy maximum value；RXminFor array (RXn, fn) in frequency spectrum
The minimum value of signal energy；
If 6) n=1, recording spectral centroid frequency corresponding to spectral signal energy at this time is ftar；Reset spectrum monitoring
The starting working frequency of module is ftar- 25MHz, cut-off working frequency are ftar+ 25MHz, bandwidth of operation 50MHz, it is automatic to adjust
Threshold value λ after whole0It is constant, complete frequency sweep；To obtain the starting working frequency of antenna for base station maximum functional signal to be measured, cut
Only working frequency, bandwidth of operation and signal spectrum Energy maximum value；
7) by unmanned plane wireless communication link by obtain antenna for base station maximum functional signal to be measured starting working frequency,
Cut-off working frequency, bandwidth of operation and signal spectrum Energy maximum value are transmitted to ground controlling terminal, pass through ground controlling terminal
The antenna for base station downlink working frequency range of each operator of automatic comparison, finally analyze operator belonging to antenna for base station to be measured,
Working form and frequency range.
Heretofore described COST231-HATA range attenuation formula is as follows:
Loss=32.44+20logD+20logf
Wherein: Loss is path loss, and unit is dB；D is transmission range, and unit is Km；F is antenna for base station work frequency
Rate, unit are MHz.
According to COST231-HATA range attenuation formula, the most original value of predetermined threshold value of the present invention is-
The foundation of 20dBm, setting are as follows:
Assuming that base station working frequency to be measured is 950MHz, 1800MHz, 2300MHz, according to COST231-HATA range attenuation
Formula calculates 0.5~5 meter apart from upper path loss values；Assuming that antenna for base station output power 46dBm to be measured, unmanned plane with it is to be measured
Antenna for base station in 5 meters, be calculated reference level, path loss values with different distance corresponding relationship, as shown in table 1.
As can be seen from the table the reception level of spectrum monitoring module be greater than -20dBm, so the most original value of gating limit value be -
20dBm。
Table 1
The specific calculation of heretofore described energy detection algorithm is as follows:
The binary hypothesis test expression of energy measuring model are as follows:
Wherein: H0It is not present for echo signal, H1For echo signal presence, x (t) is the signal that spectrum monitoring mould receives,
N (t) is additive white Gaussian noise, and s (t), which is that echo signal is existing, emits signal, and h (t) is channel gain.
The signal x (t) that spectrum monitoring module receives is obtained into monitoring frequency band signals y (t) by bandpass filter, will be believed
Number y (t) is squared, and is then carried out integral operation to it, that is, is taken in a signal period and integrated, finally obtain the energy of signal
Measure Yi, the energy Y of signal will be obtainediWith preset threshold value λ0Compare, and then judges channel idle H0Or channel is occupied
Use H1.As the energy Y of signaliLess than λ0When, it is determined as H0；As the energy Y of signaliGreater than λ0When, it is determined as H1.Energy measuring mould
Type flow chart such as Fig. 2.
The starting work frequency for the antenna for base station maximum functional signal that the present invention is mainly measured using spectrum monitoring module
Rate, cut-off working frequency, bandwidth of operation and signal spectrum Energy maximum value, then compare each standard frequency point model of three big operators
Enclose with corresponding frequency, obtain operator corresponding to the antenna for base station.
Three big each standard frequency point ranges of operator and corresponding frequency (band segment sample table) are as follows.
China Mobile's antenna for base station downstream frequency range such as table 2:
Table 2
China Unicom antenna for base station downstream frequency range such as table 3:
Table 3
China Telecom's antenna for base station downstream frequency range such as table 4:
Table 4
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.Any modification done within the spirit and principles of the present invention and changes equivalent replacement
Into etc., it should all be included in the scope of protection of the claims of the present invention.
Claims (3)
1. a kind of method based on energy measuring identification antenna for base station operator, it is characterised in that: realize that this method is specific
Steps are as follows:
1) the initial work of spectrum monitoring module is arranged according to the minimum frequency of operation of 2G/3G/4G antenna for base station and maximum operation frequency
Working frequency 800MHz, cut-off working frequency 2700MHz and bandwidth of operation 1900MHz；
2) it is flown using UAV flight's spectrum monitoring module to antenna for base station to be measured, makes the orientation day of spectrum monitoring module
Line and antenna for base station to be measured are in face state, and with antenna for base station distance to be measured less than 2 meters；
3) according to COST231-HATA range attenuation formula predetermined threshold value, then start the energy in spectrum monitoring module
The signal received is carried out energy measuring by detection algorithm, energy detection algorithm module, and detection spectral signal energy is greater than
The spectrum signal of threshold value；
4) rapid frequency-sweeping mode is opened, it is in 800~2700MHz to frequency range that range of scanned frequencies, which is 800~2700MHz,
Various spectrum signals carry out detection and quickly capture；Being recorded in frequency range is to detect in 800~2700MHz greater than thresholding
The value of the spectral signal energy of value and its corresponding centre frequency, form the array (RX of a 2*nn, fn)；
Wherein: RXn>=λ0；800MHz≤fn≤ 2700MHz；λ0For threshold value；RXnFor spectral signal energy, fnFor RXnInstitute is right
Answer spectral centroid frequency；N is the integer more than or equal to 1；
If 5) n > 1, adjust automatically threshold value λ0=λ0+(RXmax-RXmin)/2；Repeat step 4)；
Wherein: RXmaxFor array (RXn, fn) in spectral signal energy maximum value；RXminFor array (RXn, fn) in spectrum signal
The minimum value of energy；
If 6) n=1, recording spectral centroid frequency corresponding to spectral signal energy at this time is ftar；Reset spectrum monitoring module
Starting working frequency be ftar- 25MHz, cut-off working frequency are ftar+ 25MHz, bandwidth of operation 50MHz, after adjust automatically
Threshold value λ0It is constant, complete frequency sweep；To obtain starting working frequency, the cut-off work of antenna for base station maximum functional signal to be measured
Working frequency, bandwidth of operation and signal spectrum Energy maximum value；
8) starting working frequency, the cut-off of antenna for base station maximum functional signal to be measured will be obtained by unmanned plane wireless communication link
Working frequency, bandwidth of operation and signal spectrum Energy maximum value are transmitted to ground controlling terminal, automatic by ground controlling terminal
The antenna for base station downlink working frequency range for comparing each operator finally analyzes operator belonging to antenna for base station to be measured, work
Standard and frequency range.
2. the method according to claim 1 based on energy measuring identification antenna for base station operator, it is characterised in that:
The unmanned plane confirms whether the directional aerial of spectrum monitoring module is located with antenna for base station by the video capture module of unmanned plane
In face state.
3. the method according to claim 1 based on energy measuring identification antenna for base station operator, it is characterised in that:
The most original value of the predetermined threshold value is set as -20dBm.
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| CN113498103A (en) * | 2020-04-08 | 2021-10-12 | 中国移动通信集团广东有限公司 | Method and device for identifying affiliation party of base station antenna |
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