WO2012151939A1 - Procédé de détection de rapport d'onde stationnaire, dispositif et station de base - Google Patents

Procédé de détection de rapport d'onde stationnaire, dispositif et station de base Download PDF

Info

Publication number
WO2012151939A1
WO2012151939A1 PCT/CN2011/082630 CN2011082630W WO2012151939A1 WO 2012151939 A1 WO2012151939 A1 WO 2012151939A1 CN 2011082630 W CN2011082630 W CN 2011082630W WO 2012151939 A1 WO2012151939 A1 WO 2012151939A1
Authority
WO
WIPO (PCT)
Prior art keywords
signal
phase
base station
wave ratio
standing wave
Prior art date
Application number
PCT/CN2011/082630
Other languages
English (en)
Chinese (zh)
Inventor
马兴望
向明飞
Original Assignee
中兴通讯股份有限公司
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 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2012151939A1 publication Critical patent/WO2012151939A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/318—Received signal strength

Definitions

  • the present invention relates to the field of mobile communications, and in particular, to a method and apparatus for detecting a standing wave ratio of a base station. Background technique
  • the mobile communication base station needs to transmit an RF signal through an antenna.
  • the NE system feeder and antenna
  • the downlink signal power cannot be effectively radiated into the space through the antenna.
  • the base station to have the function of detecting whether the antenna feeder system is working normally.
  • the usual detection method is to detect the standing wave ratio of the base station antenna port to reflect whether the antenna feeder system works normally.
  • the circuit structure for detecting the standing wave ratio of the antenna port of the base station mainly has the following two types: First, the circuit for indirectly obtaining the forward reverse signal of the base station antenna port through the coupler between the power amplifier and the duplexer as shown in FIG.
  • the second structure is a circuit structure of the front reverse signal of the base station antenna port obtained by the coupler at the antenna port of the base station through the duplexer as shown in FIG. 2 .
  • the base station can detect the forward reverse signal of the base station antenna port, then when calculating the standing wave, it is only necessary to know the power of the front reverse signal.
  • the technical problem to be solved by the present invention is to provide an ability to detect using amplitude and phase information.
  • the method, the device and the base station of the standing wave ratio solve the problem that the conventional detection of the standing wave ratio of the base station antenna port does not use the phase information and the error is large, thereby causing the state detection of the antenna feeder system to be inaccurate.
  • the present invention provides a standing wave ratio detecting method, including:
  • Step 1 Determine an equivalent parameter value S of a group of base station antenna ports at the frequency point of interest of the base station;
  • Step 2 Obtain the power PFWD of the forward signal of the base station antenna port, the power PREV of the reverse signal, and the forward direction a phase difference between the phase of the signal and the inverted signal;
  • Step 3 Determine the standing wave ratio based on S, PFWD, PREV.
  • the step 3 further includes:
  • Step 4 Determine a state of the antenna feeder system according to the standing wave ratio.
  • the step 1 includes:
  • the base station antenna port connects the load of different known reflection coefficient r Li three times, and the base station transmits the signal of the frequency of interest to obtain the power of the corresponding forward signal ; the power of the reverse signal ⁇ , and the forward signal at this time
  • the reflection coefficient seen from the left to the right of the RF module, r Li is the reflection coefficient when the ith load is connected; ⁇ / ⁇ and i are substituted into the formula:
  • the second step includes:
  • Obtaining the forward power and the reverse power using sample values of an analog to digital converter acquiring a phase of the forward signal and the reverse signal by sampling values of an analog to digital converter Phase, determining a difference between a phase of the forward signal and a phase of the reverse signal, or acquiring a first phase difference between a phase of the forward signal and a phase of the baseband signal, the reverse A second phase difference between a phase of the signal and a phase of the baseband signal determines a difference between the first phase difference value and the second phase difference value.
  • r L is the reflection coefficient of the antenna port of the base station
  • r IN is the reflection coefficient seen from the left side to the right end of the radio frequency module.
  • the present invention further provides a standing wave ratio detecting apparatus, comprising:
  • An equivalent parameter obtaining module configured to obtain an equivalent parameter value S of a group of base station antenna ports at a frequency point of interest of the base station;
  • a power acquisition module configured to acquire a power PFWD of a forward signal of the base station antenna port and a power PREV of the reverse signal
  • phase difference acquisition module configured to determine a phase difference between phases of the forward signal and the reverse signal
  • the standing wave ratio determining module is configured to determine the standing wave ratio according to the S, PFWD, PREV and the.
  • the device further includes: an antenna feeder system state determining module, configured to determine a state of the antenna feeder system according to the standing wave ratio.
  • the power acquisition module is configured to acquire the P FWD and the PREV using sample values of the analog to digital converter.
  • the phase difference acquisition module is configured to:
  • the standing wave ratio determining module is configured to:
  • r L is the reflection coefficient of the antenna port of the base station
  • r IN is the reflection coefficient seen from the left side to the right end of the radio frequency module.
  • the present invention also provides A standing wave ratio detecting base station includes the standing wave ratio detecting device in the above technical solution.
  • the phase information affecting the standing wave ratio is calibrated by using three different loads, and the amplitude is utilized. And the phase information calculates the standing wave ratio, which improves the accuracy of the standing wave ratio, thereby improving the accuracy of detecting the connection state of the antenna feeder system.
  • FIG. 1 is a schematic structural view of a standing wave ratio detecting circuit in the prior art
  • FIG. 2 is a schematic structural diagram of still another standing wave ratio detecting circuit in the prior art
  • FIG. 3 is a schematic diagram showing an equivalent structure of a structure of a standing wave ratio detecting circuit of the prior art
  • FIG. 4 is a schematic diagram of an equivalent parameter model of the circuit structure of FIG. 3;
  • FIG. 5 is a flowchart of a standing wave ratio detecting method according to Embodiment 1 of the present invention
  • FIG. 6 is a structural block diagram of a standing wave ratio detecting device according to Embodiment 2 of the present invention.
  • DETAILED DESCRIPTION OF THE EMBODIMENTS In order to make the technical problems, technical solutions and beneficial effects of the present invention more clear and clear, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
  • FIG. 3 is a schematic diagram showing an equivalent structure of a structure of a standing wave ratio detecting circuit of the prior art
  • FIG. 4 is a schematic diagram of an equivalent parameter model of the circuit structure of FIG. 3
  • Flow chart of the standing wave ratio detection method The method of the embodiment of the present invention is described below with reference to FIG. 3, FIG. 4 and FIG. Step S502: determining an equivalent parameter value S of a group of base station antenna ports at a frequency point of interest of the base station; whether the circuit structure shown in FIG. 1 or FIG. 2 is equivalent to the circuit structure shown in FIG.
  • the structure diagram of the equivalent parameter model of FIG. 4 can be obtained.
  • an accurate reflection coefficient of the base station antenna port is needed.
  • the relation (2) can be obtained from the relation (1)
  • r IN is the reflection coefficient seen from the left to the right end of the RF module
  • r L is the reflection coefficient of the antenna port of the base station. Both parameters are vectors, including amplitude and phase information.
  • 5 s 22 . s l2 xs 2l is the equivalent parameter value s of a group of base station antenna ports
  • Figure 4 shows the S parameters of four ports.
  • the S parameter is defined by the ratio of two complex numbers, including amplitude and phase information.
  • S 11 is the reflection coefficient of port 1 when port 2 matches;
  • S22 is the reflection coefficient of port 2 when port 1 matches;
  • S 12 is the reverse transmission coefficient of port 2 to port 1 when port 1 matches;
  • S21 is the port when port 2 matches 1 to port 2 forward transmission coefficient. It is worth noting that these parameters are vectors, including not only the amplitude information about the signal, but also the phase information, and once the base station is finalized, 5;
  • S 22 . 5 ⁇ x 5 ⁇ is fixed.
  • i ⁇ is forward
  • PJU is the reverse signal power value at the reverse signal coupling, which is the phase difference between the forward signal and the reverse signal.
  • the S parameters (including 5; S 22 . S xS 2l ) are approximately equal, and only the power amplitude information of the front reverse signal is used when r V is sought, and is not used.
  • the phase information therefore, there is a relatively large error in the resulting base station standing wave ratio. Therefore, in this step, three bases with known reflection coefficients are used to calibrate the base station to obtain an accurate set of S parameters (including 5 ⁇ , 2 , S l2 xS 2l ) with phase information, which are:
  • the base station Connect the base station antenna port to load 1 with a known S-parameter.
  • the reflection coefficient of this load is ⁇ 1 .
  • the base station transmits the signal of the frequency of interest, uses the two analog-to-digital converters to directly acquire the front and reverse signals to obtain the pair of P FW m and PRE, and then obtains the angle value Z ⁇ of the reverse signal and the angle value of the forward signal.
  • the phase difference ⁇ of ⁇ , and then the dish is obtained according to the formula (3).
  • the base station antenna port is connected to the load 2 of the known S parameter, and the reflection coefficient of the load is r 2 , and the base station transmits the signal of the frequency of interest to obtain the corresponding ⁇ 2 and the phase difference Z 2 , and then according to (3) ) get r V2 .
  • ⁇ 2 is not equal to ⁇ .
  • the base station antenna port is connected to the load 3 of the known S parameter, and the reflection coefficient of the load is 3 .
  • the base station transmits the signal of the frequency of interest to obtain the corresponding ra3 and the phase difference Z%, and then obtains r V3 according to the formula (3). It should be noted that ⁇ 3 is not equal to ⁇ , nor equal to 2 .
  • the selection of the frequency of interest is related to the frequency band information of the base station. For example, if the RRU of a certain type supports the frequency band of 2110-2170 MHz, then the frequency of interest is 2110-2170 MHz, so only the S value of this frequency band needs to be determined. While another model of RRU supports the 925-960MHZ band, then only the S value of the 925-960MHZ band is required.
  • Step S504 acquiring a power P FWD of the forward signal of the base station antenna port, a power P REV of the reverse signal, and a phase difference value between the forward signal and the reverse signal at this time;
  • the forward power P FWD of the base station antenna port is obtained by sampling the forward signal and the reverse signal by two analog-to-digital converters. Reverse power Pj ⁇ v, then find the phase difference between the forward signal and the reverse signal at this time
  • the phase of the forward signal and the phase of the reverse signal are obtained, and the phase difference between the phase of the forward signal and the phase of the reverse signal is determined to be ⁇ .
  • Step S506 using S, P FWD , P REV and calculating the standing wave ratio.
  • the standing wave ratio of the base station antenna port at this time can be obtained by combining equations (2), (3) and (4).
  • step S506 the step of determining the state of the antenna feeder system by using the standing wave ratio is further included.
  • three bases with known reflection coefficients are used to calibrate the base station to obtain an accurate r L with phase information, thereby obtaining a standing wave ratio of the base station antenna port with higher accuracy.
  • FIG. 6 is a structural block diagram of a standing wave ratio detecting apparatus according to Embodiment 2 of the present invention, Includes:
  • the equivalent parameter obtaining module 602 is configured to obtain an equivalent parameter value S of a group of base station antenna ports at a frequency point of interest of the base station;
  • the power acquisition module 604 is configured to acquire the power P FWD of the forward signal of the base station antenna port and the power P REV of the reverse signal; and obtain the P FWD and the PREV using the sample values of the two analog-to-digital converters.
  • phase difference acquisition module 606 configured to determine a phase difference between phases of the forward signal and the reverse signal
  • the determining may be: acquiring a phase of the forward signal and a phase of the reverse signal, determining a difference between a phase of the forward signal and a phase of the reverse signal as ⁇ , or acquiring Determining the first phase difference value and a first phase difference value between a phase of the forward signal and a phase of the baseband signal, a second phase difference between a phase of the reverse signal and a phase of the baseband signal The difference between the second phase difference values is .
  • the standing wave ratio determination module 608 is used for the roots S, P FWD , P REV and determining the standing wave ratio. This module is used to determine the standing wave ratio according to equations (2), (3) and (4).
  • the apparatus further comprises an antenna feeder system state determining module for determining the state of the antenna feeder system based on the standing wave ratio.
  • the apparatus of the embodiment of the present invention uses three loads with known reflection coefficients to calibrate the base station to obtain an accurate r L with phase information, thereby obtaining a standing wave ratio of the base station antenna port with higher accuracy.
  • the present invention also provides a base station standing wave ratio detecting base station, including the above detecting device.
  • the technical solutions of the first embodiment and the second embodiment can be applied to the base station, and are not repeatedly described herein.
  • the phase information affecting the standing wave ratio is calibrated by using three different loads, and the standing wave ratio is calculated by using the amplitude and phase information, thereby improving The accuracy of the standing wave ratio is improved, and the accuracy of detecting the connection state of the antenna feeder system is improved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

L'invention porte sur un procédé de détection de rapport d'onde stationnaire, un dispositif et une station de base, appartenant au domaine des communications mobiles. Le procédé comprend : la détermination d'une valeur de paramètre équivalent S d'un groupe de ports d'antenne de station de base au point de fréquence par lequel une station de base est intéressée ; l'acquisition de la puissance PFWD d'un signal aller du port d'antenne de station de base, de la puissance PREV d'un signal retour, et de la différence de phase ∠φ entre les phases du signal aller et du signal retour à ce moment ; et la détermination du rapport d'onde stationnaire selon les S, PFWD, PREV et ∠φ. Au moyen de la présente invention, sur la base des informations d'amplitude concernant les signaux aller et retour de la station de base, les informations de phase affectant le rapport d'onde stationnaire sont calibrées à l'aide de trois porteuses négatives différentes, et le rapport d'onde stationnaire de la station de base est ensuite calculé à l'aide des informations d'amplitude et de phase, permettant d'améliorer la précision du rapport d'onde stationnaire, et ainsi d'améliorer la précision de détection de l'état de connexion du système d'alimentation d'antenne.
PCT/CN2011/082630 2011-08-15 2011-11-22 Procédé de détection de rapport d'onde stationnaire, dispositif et station de base WO2012151939A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110233295.3A CN102938904B (zh) 2011-08-15 2011-08-15 一种驻波比检测方法、装置和基站
CN201110233295.3 2011-08-15

Publications (1)

Publication Number Publication Date
WO2012151939A1 true WO2012151939A1 (fr) 2012-11-15

Family

ID=47138718

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/082630 WO2012151939A1 (fr) 2011-08-15 2011-11-22 Procédé de détection de rapport d'onde stationnaire, dispositif et station de base

Country Status (2)

Country Link
CN (1) CN102938904B (fr)
WO (1) WO2012151939A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113765601A (zh) * 2021-09-18 2021-12-07 南京熊猫汉达科技有限公司 一种短波发射机驻波检测校准装置和方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105743518B (zh) * 2016-01-21 2019-11-08 努比亚技术有限公司 一种天线调谐方法及装置
CN109150322B (zh) * 2017-06-27 2021-10-15 中兴通讯股份有限公司 矢量驻波比获取方法、fpga及远端射频单元
CN115051763B (zh) * 2022-06-16 2024-01-12 维沃移动通信有限公司 电压驻波比的测量方法、测量装置和电子设备
CN117498959A (zh) * 2022-07-26 2024-02-02 上海诺基亚贝尔股份有限公司 一种测量方法、装置、射频设备和计算机可读介质
CN117728884B (zh) * 2023-12-28 2024-05-28 广州配天通信技术有限公司 多系统接入平台电压驻波比检测方法、装置及存储介质

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1564896A1 (fr) * 2004-02-10 2005-08-17 Sony Ericsson Mobile Communications AB Adaptation d'impédance d'une antenne
CN101651503A (zh) * 2009-08-28 2010-02-17 上海华为技术有限公司 一种检测天馈系统驻波比的方法及装置
US20110176591A1 (en) * 2010-01-18 2011-07-21 Skyworks Solutions, Inc. Load insensitive quadrature power amplifier power detector
CN102185669A (zh) * 2011-05-05 2011-09-14 中兴通讯股份有限公司 天馈系统状态的确定方法及装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1564896A1 (fr) * 2004-02-10 2005-08-17 Sony Ericsson Mobile Communications AB Adaptation d'impédance d'une antenne
CN101651503A (zh) * 2009-08-28 2010-02-17 上海华为技术有限公司 一种检测天馈系统驻波比的方法及装置
US20110176591A1 (en) * 2010-01-18 2011-07-21 Skyworks Solutions, Inc. Load insensitive quadrature power amplifier power detector
CN102185669A (zh) * 2011-05-05 2011-09-14 中兴通讯股份有限公司 天馈系统状态的确定方法及装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113765601A (zh) * 2021-09-18 2021-12-07 南京熊猫汉达科技有限公司 一种短波发射机驻波检测校准装置和方法
CN113765601B (zh) * 2021-09-18 2024-03-26 中电防务科技有限公司 一种短波发射机驻波检测校准装置和方法

Also Published As

Publication number Publication date
CN102938904A (zh) 2013-02-20
CN102938904B (zh) 2016-10-05

Similar Documents

Publication Publication Date Title
WO2012151939A1 (fr) Procédé de détection de rapport d'onde stationnaire, dispositif et station de base
CN103018559B (zh) 基于直接式微机械微波功率传感器的相位检测装置及方法
WO2011098020A1 (fr) Procédé d'essai d'ondes stationnaires, appareil d'essai d'ondes stationnaires et station de base
US9209839B2 (en) Method of antenna impedance mismatch compensation based on time-to-digital converter phase estimation
JP5620646B2 (ja) オンライン位相較正用システム及び方法
WO2013037217A1 (fr) Procédé et appareil d'acquisition d'un rapport d'onde stationnaire
US10499363B1 (en) Methods and apparatus for improved accuracy and positioning estimates
CN102128986B (zh) 检测射频前端产品驻波比的方法及装置
CN107959515B (zh) 多天线噪声功率的测量方法和装置
US10509106B2 (en) Method for calibrating a radar system
CN112290982B (zh) 相控阵天线串馈校准耦合网络校准方法
CN103237346B (zh) 一种无线多媒体传感网定位装置、方法及系统
CN110243436B (zh) 一种用于雷达物位计的近距离干扰信号消除系统
WO2021037135A1 (fr) Procédé et dispositif de détection de position anormale d'onde stationnaire, et support
Sarkas et al. A fundamental frequency 143-152 GHz radar transceiver with built-in calibration and self-test
JP4124841B2 (ja) ネットワーク・アナライザ、高周波周波数特性測定装置および誤差要因測定方法
CN101674141B (zh) 一种检测射频馈线损耗的方法和装置
WO2013082818A1 (fr) Procédé et dispositif d'alignement d'antenne à micro-ondes
CN109085563A (zh) 基于软件无线电平台的wlan测距技术
WO2014058432A1 (fr) Estimation de tos à l'aide de corrélation afin de supprimer les interférences externes
CN102185669B (zh) 天馈系统状态的确定方法及装置
Linz et al. Ultra-short-range, precise displacement measurement setup with a near field slot-line antenna and a dedicated spiral calibration
JP5583854B2 (ja) 無線通信装置の電力を較正する方法、および電力較正のために無線通信装置により実行される方法
CN108925143B (zh) 驻波检测方法、驻波检测装置和电子枪
JP2011191119A (ja) 位相差方探受信装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11865338

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11865338

Country of ref document: EP

Kind code of ref document: A1