EP2219263A1 - Procédé de détection d'erreur et appareil correspondant - Google Patents

Procédé de détection d'erreur et appareil correspondant Download PDF

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Publication number
EP2219263A1
EP2219263A1 EP09290101A EP09290101A EP2219263A1 EP 2219263 A1 EP2219263 A1 EP 2219263A1 EP 09290101 A EP09290101 A EP 09290101A EP 09290101 A EP09290101 A EP 09290101A EP 2219263 A1 EP2219263 A1 EP 2219263A1
Authority
EP
European Patent Office
Prior art keywords
antenna
phase shift
base station
cables
elements
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09290101A
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German (de)
English (en)
Other versions
EP2219263B1 (fr
Inventor
Martin Dillenburger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alcatel Lucent SAS
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Alcatel Lucent SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alcatel Lucent SAS filed Critical Alcatel Lucent SAS
Priority to DE602009001237T priority Critical patent/DE602009001237D1/de
Priority to EP09290101A priority patent/EP2219263B1/fr
Priority to AT09290101T priority patent/ATE508491T1/de
Publication of EP2219263A1 publication Critical patent/EP2219263A1/fr
Application granted granted Critical
Publication of EP2219263B1 publication Critical patent/EP2219263B1/fr
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/267—Phased-array testing or checking devices

Definitions

  • the invention relates to a method for cabling error detection in a base station of a mobile communication system, and to a base station.
  • An antenna array is formed of multiple antenna elements coupled to a common source in order to produce a directive radiation pattern.
  • the spatial relationship between the antenna elements further contributes to the directivity of the antenna as well.
  • the groups of antennas is built so that the relative phases of the respective signals feeding the antennas are varied in such a way that the effective radiation pattern of the array is reinforced in a desired direction and suppressed in an undesired direction.
  • the antenna array system can be used, for example, to transmit one or more beams onto one or more different directions.
  • the invention relates to a method for cabling error detection in a base station coupled to an antenna array system, the antenna array system comprising a plurality of antenna elements and a plurality of antenna cables, the antenna cables coupling the base station with the antenna elements.
  • the method further comprises: obtaining at least two results of a phase shift of at least the first antenna cable by combining different sums of phase shifts of the first and second antenna cables; comparing the two results of the phase shifts of each first antenna cable; and detecting cabling error if the two results differ by any value except 0 or PI.
  • An advantage of the embodiment is that an automatic and early detection of the cabling error, avoids the need of a manual check by unnecessarily reaching the high antenna mounting conditions. Another advantage of the embodiment is that when the cabling errors are correctly positioned after cabling error detection, this will improve the accuracy in the transmission of the beams and the construction of the radiation pattern.
  • the method further comprises: obtaining a third result of the phase shift of at least the first antenna cable, wherein no cabling error is detected if a first and a second result of the two results are equal or differ by PI and if the third result differs by zero or pi.
  • the antenna parameter represents phase shift between pairs of the antenna array elements.
  • no cabling error is detected if the first and the second result differ within a margin error.
  • the antenna elements of the antenna array system are connected to a base station via antenna cables of different lengths.
  • the base station uses a calibration algorithm for compensating the different cable lengths by calculating the phase shift for each antenna cable.
  • the antenna array system transmits a plurality of beams.
  • the antenna array system is an adaptive antenna system.
  • the cabling error occurs when first and second antenna cables are twisted.
  • the invention in another broad aspect, relates to a base station in a communication network, the base station coupled to an antenna array system, the antenna array system comprising a plurality of antenna elements and a plurality of antenna cables, the antenna cables coupling the base station with the antenna elements, the base station comprising:
  • the base station further comprises:
  • the base station further comprises:
  • Fig. 1 shows a block diagram 100 of a telecommunication system comprising a base station 101, a plurality of antenna cables 102, and an antenna array system 103.
  • the plurality of cables 102 has different lengths and the phase shift of each cable is initially unknown. Therefore, the base station 101 compensates the cable length of the plurality of cables 102 by using a calibration algorithm by taking the known antenna parameters of the antenna array system 103 as an input data.
  • the antenna array system may be for example an adaptive antenna system.
  • the antenna array system may transmit a plurality of beams into different directions.
  • Fig. 2 shows the details of an antenna array system 200 comprising a plurality of antenna elements 201-204.
  • Each of the antenna elements 201-204 are coupled to a base station through an antenna cable as presented in fig. 1 .
  • Each of the cables may have a different length.
  • the antenna array system 200 is able to produce a directive radiation pattern and therefore transmitting a set of beams into different directions.
  • the antenna parameters of the antenna array system indicate a phase shift between a first and a second antenna element.
  • the antenna parameters are previously known values from each antenna array system.
  • the antenna parameter S 12 describes the phase shift between the first antenna element and the second antenna element;
  • the antenna parameter S 13 describes the phase shift between the first antenna element 201 and the third antenna element 203.
  • the antenna parameter S 14 describes the phase shift between the first antenna element 201 and the fourth antenna element 204;
  • the antenna parameter S 23 describes the phase shift between the second antenna element 202 and the third antenna element 203;
  • the antenna parameter S 34 describes the phase shift between the third antenna parameter 203 and the fourth antenna parameter 204, and finally the antenna parameter S 24 describes the second antenna element 202 and the fourth antenna element 204. All these six antenna parameters are used as inputs in the method of detecting cabling error in the plurality of antenna cables that couple the base station with the antenna array system.
  • Fig. 3 shows a communication transmitter 300 comprising a base station 301 coupled to a plurality of antenna cables 302 and an antenna array system 303 coupled to a plurality of antenna cables 302.
  • the first cable C1 is twisted with the second cable C2 and therefore they describe an example of a cabling error that may incur in a failure in the transmission of the signal to the antenna array system 303 from the base station 301.
  • An early detection of the cabling error without the need of a manual cable check is highly advantageous due to the high antenna mounting conditions. Further, when the cabling errors are correctly positioned after cabling error detection, this will improve the accuracy in the transmission of the beams and the construction of the radiation pattern.
  • Fig. 4 shows a flowchart 400 of a cabling error detection method in a base station of a mobile communication system.
  • the mobile communication system comprises a base station coupled to an antenna array system, the antenna array system comprising a plurality of antenna elements and a plurality of antenna cables.
  • the antenna cables coupling the base station with the antenna elements.
  • a first step 401 the antenna parameter of each first and second antenna elements of the antenna array system is obtained.
  • the antenna parameters indicate a phase shift between the first and the second antenna elements, and these are predefined values obtained, for example, from the antenna array manufacturer.
  • an overall phase shift between each first and second antenna element is measured.
  • the overall phase shift equals the antenna parameter of the first and the second antenna element plus a sum of phase shifts of first and second antenna cables.
  • the first and second antenna cables couple the first and second antenna elements to the base station respectively.
  • a third step 403 the sum of phase shifts of each first and second antenna cables is calculated.
  • the calculation follows a subtraction of the antenna parameter of the first and second antenna elements from the overall phase shift of the same first and second antenna element.
  • a fourth step 404 at least two results of phase shift of all antenna cables are obtained by combining different sums of phase shifts of all antenna cable pairs.
  • a fifth step the two results of the phase shifts of each antenna cable are compared and in a sixth step, the cabling error is detected if the two results differ by any value not equal to 0 or PI.
  • the antenna array system comprises at least four antenna elements, and therefore, the plurality of antenna cables should comprise at least four cables, in order to have independent ways to calculate the phase shifts from the phase shift sums (Cn+Cm). If the results of the previous step are equal or differ by PI, a third result of a phase shift of the respective antenna cable has to be obtained. Then, no cabling error is detected if the first and the second results of the two results are equal or differ by PI, and if the third result differs by 0 or PI.
  • the antenna parameter represents phase shift between pairs of the antenna array elements and under normal circumstances, no cabling error is detected if the first and the second result differ within a margin error.
  • Fig. 5 shows an example of the possible calculations to obtain the overall phase shift 501 and the sum of phase shift of the first and the second antenna elements 502.
  • the overall phase shift of between each first and second antenna element is measured by the base station.
  • the antenna parameters of each first and second antenna elements are obtained as predefined values.
  • the Anm represent the measured overall phase shift value and Snm represents the antenna parameters.
  • the overall phase shift equals the antenna parameter of the first and second antenna elements plus the sum of the phase shifts of the first and the second antenna cables (Cn+Cm)
  • the sum of the phase shifts of each first and second antenna cable are calculated, as shown in the formulas of 502.
  • the antenna array system comprises four antenna elements
  • six sums of phase shifts of first and second antenna elements are obtained, each of them describing a different combination of the first and second antenna cables.
  • the results of the sums of the phase shifts of the antenna cables will be combined in order to obtain at least two results of the phase shift of at least a first antenna cable.
  • the two results of the phase shift is obtained by combining the different sums of phase shifts of the first and second antenna cables as represented in 502.
  • Fig. 6 shows the calculation 601 of three results of the cables phase shifts c1 and c2.
  • the single antenna cable phase shifts are obtained.
  • On c1a three different sums of cable shifts containing the single cable phase shifts c1, c2 and c3 is used for obtaining the first result of the cable shift.
  • the second phase shift c1b result of the same cable length is obtained from the sums of cable phase shifts containing the cable phase shifts c1, c2 and c4.
  • the third result of the cable phase shift c1c is obtained from the cable phase shifts c1, c3 and c4.
  • two of the three results of the phase shift of each first antenna cable are compared 602 and a cabling error is detected if the two results differ by any value except 0 or PI. If the two results are equal or differ by PI, a third result of a phase shift is obtained. The third result is compared with the other two results. If the third result is equal to the other two, or differs by PI, no cabling error is detected.
  • Block diagram 101 Base station 102 Plurality of antenna cables 103 Antenna array system 200 Antenna array system 201 First antenna element 202 Second antenna element 203 Third antenna element 204 Fourth antenna element 300 Block diagram 301 Base station 302 Plurality of antenna elements 303 Antenna array system 400 Flowchart 401 First step 402 Second step 403 Third step 404 Fourth step 405 Fifth step 406 Sixth step 500 Calculations 501 Overall phase shift calculation 502 Sum of phase shift calculation 600 Phase shift comparison

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
EP09290101A 2009-02-12 2009-02-12 Procédé de détection d'erreur et appareil correspondant Active EP2219263B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE602009001237T DE602009001237D1 (de) 2009-02-12 2009-02-12 Fehlerdetektionsverfahren und Vorrichtung dafür
EP09290101A EP2219263B1 (fr) 2009-02-12 2009-02-12 Procédé de détection d'erreur et appareil correspondant
AT09290101T ATE508491T1 (de) 2009-02-12 2009-02-12 Fehlerdetektionsverfahren und vorrichtung dafür

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09290101A EP2219263B1 (fr) 2009-02-12 2009-02-12 Procédé de détection d'erreur et appareil correspondant

Publications (2)

Publication Number Publication Date
EP2219263A1 true EP2219263A1 (fr) 2010-08-18
EP2219263B1 EP2219263B1 (fr) 2011-05-04

Family

ID=40749172

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09290101A Active EP2219263B1 (fr) 2009-02-12 2009-02-12 Procédé de détection d'erreur et appareil correspondant

Country Status (3)

Country Link
EP (1) EP2219263B1 (fr)
AT (1) ATE508491T1 (fr)
DE (1) DE602009001237D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102480329A (zh) * 2010-11-25 2012-05-30 大唐移动通信设备有限公司 一种基站测试方法及设备
EP2943025A1 (fr) * 2013-01-25 2015-11-11 Huawei Technologies Co., Ltd. Dispositif et procédé de localisation permettant de connecter un port d'alimentation d'antenne d'une station de base et un port d'antenne

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5657023A (en) * 1996-05-02 1997-08-12 Hughes Electronics Self-phase up of array antennas with non-uniform element mutual coupling and arbitrary lattice orientation
WO2001002871A1 (fr) * 1999-06-30 2001-01-11 Nokia Networks Oy Procede et dispositif de verification de connexions par cable
US20070247363A1 (en) * 2006-04-10 2007-10-25 Piesinger Gregory H Antenna calibration method and apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5657023A (en) * 1996-05-02 1997-08-12 Hughes Electronics Self-phase up of array antennas with non-uniform element mutual coupling and arbitrary lattice orientation
WO2001002871A1 (fr) * 1999-06-30 2001-01-11 Nokia Networks Oy Procede et dispositif de verification de connexions par cable
US20070247363A1 (en) * 2006-04-10 2007-10-25 Piesinger Gregory H Antenna calibration method and apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102480329A (zh) * 2010-11-25 2012-05-30 大唐移动通信设备有限公司 一种基站测试方法及设备
CN102480329B (zh) * 2010-11-25 2014-03-12 大唐移动通信设备有限公司 一种基站测试方法及设备
EP2943025A1 (fr) * 2013-01-25 2015-11-11 Huawei Technologies Co., Ltd. Dispositif et procédé de localisation permettant de connecter un port d'alimentation d'antenne d'une station de base et un port d'antenne
EP2943025A4 (fr) * 2013-01-25 2016-04-06 Huawei Tech Co Ltd Dispositif et procédé de localisation permettant de connecter un port d'alimentation d'antenne d'une station de base et un port d'antenne
US9860772B2 (en) 2013-01-25 2018-01-02 Huawei Technologies Co., Ltd. Method and apparatus for determining connection relationship between an antenna feeding port of base station and an antenna port

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Publication number Publication date
ATE508491T1 (de) 2011-05-15
DE602009001237D1 (de) 2011-06-16
EP2219263B1 (fr) 2011-05-04

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