CN101989872B - Detection method of jumper wire sequence of antenna - Google Patents

Detection method of jumper wire sequence of antenna Download PDF

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CN101989872B
CN101989872B CN 200910090276 CN200910090276A CN101989872B CN 101989872 B CN101989872 B CN 101989872B CN 200910090276 CN200910090276 CN 200910090276 CN 200910090276 A CN200910090276 A CN 200910090276A CN 101989872 B CN101989872 B CN 101989872B
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antenna
subframe
footpath
power
cir
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CN101989872A (en
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张翼鹏
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TD Tech Ltd
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TD Tech Ltd
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Abstract

The invention discloses a detection method of the jumper wire sequence of an antenna, comprising the following steps of: previously setting a first threshold value; after an antenna array is completely installed, firstly acquiring the CIR (Channel Impulse Response) of each antenna in the antenna array; then calculating the phase difference between received signals of each pair of adjacent antennae according to the acquired CIR of each antenna; finally judging according to the difference value between the phase differences; if the difference value between any two phase differences is less than the first threshold value, judging that the jumper wire sequence of the antenna is accurate; and if not, judging that the jumper wire sequence of the antenna is wrong. The invention can be used for realizing the detection of the accuracy of the jumper wire sequence of the antenna.

Description

A kind of antenna jumper line preface detection method
Technical field
The present invention relates to the mobile communication technology field, particularly a kind of antenna jumper line preface detection method.
Background technology
The TD-SCDMA system adopts intelligent antenna technology.Wire jumper line preface mistake takes place to many wire jumpers are arranged between the antenna in RF remote unit (RRU) easily, thereby greatly influences the performance of smart antenna.In order to reduce the generation of this mistake, industry has been taked with different colors RRU to be carried out the mode of mark to the wire jumper of antenna, and still, this still can not be avoided wire jumper line preface mistake fully, such as setup error.
When wire jumper line preface mistake takes place, can the performance of TD-SCDMA system be affected.Because wire jumper line preface mistake can influence ripple and reach the correctness that angle (DOA) is estimated, thereby the performance of other algorithm is impacted, such as: dispatching algorithm, downlink forming algorithm etc.Therefore, need detect automatically, and when finding wire jumper line preface mistake, in time corrigendum is avoided systematic function is made a very bad impression to antenna jumper line preface mistake.
At present, also less than patent and document about antenna jumper line preface context of detection.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of antenna jumper line preface detection method, detects with the correctness of realization to current antenna jumper line preface.
For achieving the above object, technical scheme of the present invention specifically is achieved in that
A kind of antenna jumper line preface detection method, this method sets in advance first threshold, and after aerial array installs, may further comprise the steps:
The channel impulse response CIR of each root antenna in A, the described aerial array of collection;
B, calculate each to the phase difference between the received signal of adjacent antenna according to the CIR of each root antenna of described collection;
C, judge according to the difference between the described phase difference, if the difference between any two phase differences, judges that antenna jumper line preface is correct all less than described first threshold, otherwise, judge antenna jumper line preface mistake.
Described A can comprise: gather the total K of antenna in the described aerial array, and the use test user equipment (UE) converses in the sector of described aerial array correspondence, in the process of described conversation, gather the CIR of each root antenna corresponding to described test UE.
That gather among the described A is the CIR of each root antenna corresponding to the line N subframe of described test UE;
Described B can comprise:
B1, determine described test UE the strongest footpath of power in each subframe respectively;
B2, respectively at each subframe calculate the strongest footpath of its corresponding power at each to the phase difference between the received signal of adjacent antenna;
B3, calculate corresponding to mean value with each phase difference of a pair of adjacent antenna, with the described mean value that calculates as the phase difference between the received signal of a pair of adjacent antenna of correspondence.
Described B1 can comprise:
B11, basis P n , l = Σ k = 1 K | | h ( n , k , l ) | | 2 Calculate the power in l footpath in n the subframe, wherein:
N is the numbering of subframe, and span is the integer between 1～N;
L is the numbering in footpath, and span is the integer between 1～W, and W is that the window of CIR is long;
K is the numbering of antenna, and span is the integer between 1～K;
P N, lThe power of representing l footpath in n the subframe;
(l) the l footpath of n subframe of expression is at the CIR of k root antenna for n, k for h;
B12, more described calculate each the footpath power, with prominent footpath in each subframe as described test UE the strongest footpath of power in corresponding subframe.
Described B2 can comprise:
B21, calculating A (n, m)=h (n, m+1, l N, max) h *(n, m, l N, max), m=1 ..., K-1, wherein:
M represents the numbering of the logarithm of adjacent antenna, and the 1st antenna and the 2nd antenna constitute the 1st pair of adjacent antenna, and the 2nd antenna and the 3rd antenna constitute the 2nd pair of adjacent antenna, and the rest may be inferred, and K-1 root antenna and K root antenna constitute K-1 to adjacent antenna;
l N, maxExpression test UE the strongest footpath of power in n subframe;
H (n, m+1, l N, max) power is the strongest in n subframe of expression footpath is at the CIR of m+1 root antenna;
h *(n, m, l N, max) power is the strongest in n subframe of expression footpath is in the conjugation of the CIR of m root antenna;
B22, calculating ω ( n , m ) = arctg ( A I ( n , m ) A R ( n , m ) ) , With ω (n, m) as m in n the subframe to the phase difference between the received signal of adjacent antenna, wherein:
A R(n, k) and A I(n k) represents A (n, real part k) and imaginary part respectively.
Described B3 can comprise: calculate ω ( m ) = Σ n = 1 N ω ( n , m ) , With ω (m) as m to the phase difference between the received signal of adjacent antenna.
Preferably, described test UE away from the normal direction of described aerial array, fixed-site and and aerial array between distance greater than signal wavelength.
Before the described test UE of use converses, may further include: the uplink power control function of closing described test UE.
As seen from the above technical solution, antenna jumper line preface detection method of the present invention is after aerial array installs, converse in the sector of aerial array correspondence by use test UE, and in the collection aerial array each root antenna corresponding to the CIR of this UE, calculate each to the phase difference between the received signal of adjacent antenna according to the CIR that is gathered then, and judge the correctness of antenna jumper line preface, thereby realized the correctness of antenna jumper line preface is detected according to the difference between the described phase difference.
Description of drawings
Fig. 1 is the schematic flow sheet of antenna jumper line preface detection method of the present invention.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in further detail.
Main thought of the present invention is: after aerial array installs, use test UE converses in the sector of aerial array correspondence, and in the collection aerial array each root antenna corresponding to the channel impulse response (CIR of this UE, Channel impulse response), calculate each to the phase difference between the received signal of adjacent antenna according to the CIR that is gathered then, and judge the correctness of antenna jumper line preface according to the difference between the described phase difference.
The method that the present invention provides is to carry out according to the characteristics of aerial array, that is: the signal of adjacent antenna differs same phase place, and therefore, the present invention proposes: carry out the judgement of antenna jumper line preface correctness at the phase difference of each antenna by measuring most powerful path.If phase difference equates (or approximately equal), can judge that antenna jumper line preface is correct, otherwise judge antenna jumper line preface mistake.In actual applications, the CIR that can use the multiframe data averages the phase difference of each antenna, to reduce the influence of noise disturbance to phase difference.Here, that adjacent antenna is meant is determined according to the structure of aerial array, be in the adjacent position in aerial array two antennas, these two antennas constitute a pair of adjacent antenna.
Fig. 1 is the schematic flow sheet of antenna jumper line preface detection method of the present invention.Referring to Fig. 1, this method sets in advance and is used to judge whether approximately equalised first threshold TH of phase difference, and after aerial array installs, may further comprise the steps:
Step 101: the CIR that gathers each root antenna in the aerial array.
In this step, can in the sector of this aerial array correspondence, get through a phone by use test UE, and in communication process, gather the CIR of each antenna corresponding to this test UE.
In test process, should be noted that following some:
1, test UE should be away from the normal direction of aerial array, and fixed-site;
2, can before testing, close the uplink power control ability of test UE, make mobile phone, thereby improve received signal to noise ratio, reduce the influence of noise disturbance with more high-power emission;
3, when test makes distance between mobile phone and the aerial array greater than signal wavelength, that is: allow UE be in the far field.
In this step, can further gather the total K of antenna.The operation of described collection is to gather from NODEB.
Step 102: the CIR according to each root antenna of gathering calculates each to the phase difference between the received signal of adjacent antenna.
As previously mentioned, in order to reduce the influence of noise disturbance to phase difference, the CIR that can use the multiframe data averages the phase difference of each antenna.Be example to have gathered each root antenna in the step 101 corresponding to the CIR of the line N subframe of test UE below, the phase difference between the received signal how to calculate adjacent antenna be described:
The 1st step: determine test UE the strongest footpath of power in each subframe respectively.Particularly,
At first, according to P n , l = Σ k = 1 K | | h ( n , k , l ) | | 2 Calculate the power in l footpath in n the subframe, wherein:
N is the numbering of subframe, and span is the integer between 1～N;
L is the numbering in footpath, and span is the integer between 1～W, and W is that the window of CIR is long;
K is the numbering of antenna, and span is the integer between 1～K;
P N, lThe power of representing l footpath in n the subframe;
(l) the l footpath of n subframe of expression is at the CIR of k root antenna for n, k for h.
Then, the power in each footpath that relatively calculates, with prominent footpath in each subframe as test UE the strongest footpath of power in corresponding subframe.
The 2nd the step: respectively at each subframe calculate the strongest footpath of its corresponding power at each to the phase difference between the received signal of adjacent antenna.Particularly:
Subordinate, and calculating A (n, m)=h (n, m+1, l N, max) h *(n, m, l N, max), m=1 ..., K-1, wherein:
M represents the numbering of the logarithm of adjacent antenna, and the 1st antenna and the 2nd antenna constitute the 1st pair of adjacent antenna, and the 2nd antenna and the 3rd antenna constitute the 2nd pair of adjacent antenna, and the rest may be inferred, and K-1 root antenna and K root antenna constitute K-1 to adjacent antenna;
l N, maxExpression test UE the strongest footpath of power in n subframe;
H (n, m+1, l N, max) power is the strongest in n subframe of expression footpath is at the CIR of m+1 root antenna;
h *(n, m, l N, max) power is the strongest in n subframe of expression footpath is in the conjugation of the CIR of m root antenna.
Then, make A (n, m)=‖ A (n, m) ‖ e J ω (m, n), (n m), calculates to find the solution ω ω ( n , m ) = arctg ( A I ( n , m ) A R ( n , m ) ) , And with ω (n, m) as m in n the subframe to the phase difference between the received signal of adjacent antenna, wherein:
A R(n, k) and A I(n k) represents A (n, real part k) and imaginary part respectively.
Here, (n, m) unit with TH is identical, is all " radian " or is all " degree " for ω.
The 3rd step: calculate corresponding to mean value with each phase difference of a pair of adjacent antenna, with the mean value that calculates as the phase difference between the received signal of a pair of adjacent antenna of correspondence.Particularly, be exactly to calculate ω ( m ) = Σ n = 1 N ω ( n , m ) , With ω (m) as m to the phase difference between the received signal of adjacent antenna.
Step 103: judge according to the difference between each phase difference, if the difference between any two phase differences, judges that antenna jumper line preface is correct all less than TH, otherwise, judge antenna jumper line preface mistake.
In this step, order x ( n ) = max m = 1 , · · · , K - 1 { ω ( m ) } - min m = 1 , · · · , K - 1 { ω ( m ) } , If x (n)＜TH judges that then antenna jumper line preface is correct, otherwise, judge that antenna jumper line preface makes a mistake.
So far, finish antenna jumper line preface detection method of the present invention.
As seen from the above-described embodiment, the present invention is after aerial array installs, converse in the sector of aerial array correspondence by use test UE, and in the collection aerial array each root antenna corresponding to the CIR of this UE, then according to the phase difference between the received signal of the CIR calculating adjacent antenna of being gathered, and judge the correctness of antenna jumper line preface, thereby realized the correctness of antenna jumper line preface is detected according to the difference between the described phase difference.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.All any modifications of being done within the spirit and principles in the present invention, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (6)

1. antenna jumper line preface detection method is characterized in that this method sets in advance first threshold, and after aerial array installs, may further comprise the steps:
The total K of antenna in A, the described aerial array of collection, and use test subscriber equipment (UE) is conversed in the sector of described aerial array correspondence, in the process of described conversation, gather the channel impulse response (CIR) of each root antenna corresponding to the N continuous subframe of described test UE;
B1, determine described test UE the strongest footpath of power in each subframe respectively;
B2, respectively at each subframe calculate the strongest footpath of its corresponding power at each to the phase difference between the received signal of adjacent antenna;
B3, calculate corresponding to mean value with each phase difference of a pair of adjacent antenna, with the described mean value that calculates as the phase difference between the received signal of a pair of adjacent antenna of correspondence;
C, judge according to the difference between the described phase difference, if the difference between any two phase differences, judges that antenna jumper line preface is correct all less than described first threshold, otherwise, judge antenna jumper line preface mistake.
2. method according to claim 1 is characterized in that, described B1 comprises:
B11, basis Calculate the power in l footpath in n the subframe, wherein:
N is the numbering of subframe, and span is the integer between 1～N;
L is the numbering in footpath, and span is the integer between 1～W, and W is that the window of CIR is long;
K is the numbering of antenna, and span is the integer between 1～K;
P N, lThe power of representing l footpath in n the subframe;
(l) the l footpath of n subframe of expression is at the CIR of k root antenna for n, k for h;
B12, more described calculate each the footpath power, with prominent footpath in each subframe as described test UE the strongest footpath of power in corresponding subframe.
3. method according to claim 2 is characterized in that, described B2 comprises:
B21, calculating A (n, m)=h (n, m+1, l N, max) h *(n, m, l N, max), m=1 ..., K-1, wherein:
M represents the numbering of the logarithm of adjacent antenna, and the 1st antenna and the 2nd antenna constitute the 1st pair of adjacent antenna, and the 2nd antenna and the 3rd antenna constitute the 2nd pair of adjacent antenna, and the rest may be inferred, and K-1 root antenna and K root antenna constitute K-1 to adjacent antenna;
l N, maxExpression test UE the strongest footpath of power in n subframe;
H (n, m+1, l N, max) power is the strongest in n subframe of expression footpath is at the CIR of m+1 root antenna;
h *(n, m, l N, max) power is the strongest in n subframe of expression footpath is in the conjugation of the CIR of m root antenna;
B22, calculating
Figure FDA00002929232300021
With ω (n, m) as m in n the subframe to the phase difference between the received signal of adjacent antenna, wherein:
A R(n, m) and A I(n m) represents A (n, real part m) and imaginary part respectively.
4. method according to claim 3 is characterized in that, described B3 comprises:
Calculate
Figure FDA00002929232300022
With ω (m) as m to the phase difference between the received signal of adjacent antenna.
5. according to each described method of claim 1 to 4, it is characterized in that:
Described test UE away from the normal direction of described aerial array, fixed-site and and aerial array between distance greater than signal wavelength.
6. according to each described method of claim 1 to 4, it is characterized in that, before the described test UE of use converses, further comprise:
Close the uplink power control function of described test UE.
CN 200910090276 2009-08-04 2009-08-04 Detection method of jumper wire sequence of antenna Expired - Fee Related CN101989872B (en)

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Publication number Priority date Publication date Assignee Title
CN106330345B (en) * 2015-06-29 2020-03-06 中兴通讯股份有限公司 Method and device for detecting connection line sequence of electrically-tunable antenna
CN114424505B (en) * 2019-09-25 2024-04-26 华为技术有限公司 Line sequence detection method and detection system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6983172B2 (en) * 2002-01-03 2006-01-03 Motorola, Inc. Method and apparatus for transmitting a traffic signal using an adaptive antenna array
CN101064902A (en) * 2006-04-25 2007-10-31 大唐移动通信设备有限公司 Method for real-time calibrating intelligent antenna
CN101154977A (en) * 2006-09-26 2008-04-02 中兴通讯股份有限公司 Method for detecting cable connection of intelligent antenna outdoor unit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6983172B2 (en) * 2002-01-03 2006-01-03 Motorola, Inc. Method and apparatus for transmitting a traffic signal using an adaptive antenna array
CN101064902A (en) * 2006-04-25 2007-10-31 大唐移动通信设备有限公司 Method for real-time calibrating intelligent antenna
CN101154977A (en) * 2006-09-26 2008-04-02 中兴通讯股份有限公司 Method for detecting cable connection of intelligent antenna outdoor unit

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