WO2022002099A1 - Procédé de détection d'ondes stationnaires, appareil de détection d'ondes stationnaires et dispositif de réseau - Google Patents

Procédé de détection d'ondes stationnaires, appareil de détection d'ondes stationnaires et dispositif de réseau Download PDF

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Publication number
WO2022002099A1
WO2022002099A1 PCT/CN2021/103365 CN2021103365W WO2022002099A1 WO 2022002099 A1 WO2022002099 A1 WO 2022002099A1 CN 2021103365 W CN2021103365 W CN 2021103365W WO 2022002099 A1 WO2022002099 A1 WO 2022002099A1
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WO
WIPO (PCT)
Prior art keywords
standing wave
network device
wave detection
signal
power level
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PCT/CN2021/103365
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English (en)
Chinese (zh)
Inventor
原亚运
吴广德
韦兆碧
王珊
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中兴通讯股份有限公司
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Publication of WO2022002099A1 publication Critical patent/WO2022002099A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/0082—Monitoring; Testing using service channels; using auxiliary channels
    • H04B17/0085—Monitoring; Testing using service channels; using auxiliary channels using test signal generators
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/04—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant in circuits having distributed constants, e.g. having very long conductors or involving high frequencies
    • G01R27/06—Measuring reflection coefficients; Measuring standing-wave ratio
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic

Definitions

  • the present disclosure relates to the field of communication technology.
  • Base Station refers to a radio transceiver station that transmits information with a mobile phone terminal through a mobile communication switching center in a certain radio coverage area.
  • Base Station refers to a radio transceiver station that transmits information with a mobile phone terminal through a mobile communication switching center in a certain radio coverage area.
  • a standing wave detection method of a network device comprising: detecting a power level of a reflected signal (REV); detecting a power level of a forward signal (FWD); The power level of the reflected signal and the power level of the forward signal obtain the standing wave ratio corresponding to the multiple transmission channels of the network device, wherein the step of detecting the power level of the reflected signal includes: The multiple transmission channels of the network device send out standing wave detection signals; and the power level of the reflected signal is acquired through the multiple reception channels of the network device; the step of detecting the power level of the forward signal
  • the method includes: controlling multiple transmit channels of the network device to send standing wave detection signals, and controlling one of the multiple receive channels to obtain the power level of the forward signal through an antenna calibration network.
  • a standing wave detection apparatus for a network device, including: a storage medium, in which an executable program is stored; one or more processors, the one or more processing The controller can call the executable program to implement the standing wave detection method described above.
  • a network device including an antenna calibration network, a standing wave detection device, a plurality of transmission channels and a plurality of reception channels, wherein the antenna calibration network is connected to the plurality of reception channels , the standing wave detection device is the aforementioned standing wave detection device.
  • FIG. 1 is a schematic diagram of the connection relationship between a receiving and sending channel and a detection channel in the related art
  • FIG. 2 is a schematic diagram of the connection relationship between a plurality of receiving and sending channels and detection channels in the related art
  • FIG. 3 is a schematic diagram of the principle of implementing standing wave detection by receiving and transmitting channels and an antenna calibration network according to an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of another principle of implementing standing wave detection through receiving and transmitting channels and an antenna calibration network according to an embodiment of the present disclosure.
  • standing wave detection In order to detect the performance of the base station in real time, it is often necessary to perform standing wave detection on the base station, that is, send a continuous sine wave (ie standing wave detection signal) or a single tone signal through the transmission channel of the base station, receive the reflected wave, and according to the forward signal FWD and The reflected signal REV is processed and analyzed to obtain information such as the standing wave ratio, and then the connection situation of the antenna-feeder cable and the fault situation of the base station.
  • a continuous sine wave ie standing wave detection signal
  • FWD forward signal
  • the reflected signal REV is processed and analyzed to obtain information such as the standing wave ratio, and then the connection situation of the antenna-feeder cable and the fault situation of the base station.
  • the standing wave detection signal is sent by the transmit channel TX, while the forward signal FWD and the reflected signal REV are both acquired by a separate detection channel ORX.
  • the detection channel ORX obtains the forward signal FWD through the forward signal acquisition device, the reflected signal REV received by the receiving channel RX1 is transferred to the detection channel ORX through the switch, and the detection channel ORX receives the reflected signal REV and the forward signal in turn through the switch. to signal FWD.
  • the number of detection channels used by the detection channel ORX is usually small.
  • the number of transmission and reception channels of the base station has greatly increased compared with the previous ones.
  • the reflected signal REV detection circuit and switch corresponding to the detection channel ORX will occupy a huge space, and the detection time will be long and the detection efficiency will be low.
  • a method for detecting standing waves of a network device including the following steps S1 to S3:
  • step S1 the power level of the reflected signal REV is detected
  • step S2 the power level of the forward signal FWD is detected
  • step S3 according to the detected power level of the reflected signal REV and the power level of the forward signal FWD, the standing wave ratios corresponding to the multiple transmission channels TX of the network device are obtained.
  • step S1 of detecting the power level of the reflected signal REV includes the following steps S11 to S12:
  • step S11 a standing wave detection signal is sent through a plurality of transmission channels TX of the network device.
  • step S12 obtain the power level of the reflected signal REV through multiple receiving channels RX of the network device;
  • the step S2 of detecting the power level of the forward signal FWD includes:
  • step S21 control multiple transmission channels TX of the network device to send standing wave detection signals
  • step S22 one of the receiving channels RX is controlled to obtain the power level of the forward signal FWD through the antenna calibration network (AC network) of the network device.
  • AC network antenna calibration network
  • FIG. 3 shows a circuit connection method corresponding to a radio frequency interface of the network device when the standing wave detection method provided by the present disclosure is used to detect the network device.
  • the network device includes multiple transmit channels TX and multiple receive channels RX. For each radio frequency interface, there is one transmit channel TX and one receive channel RX corresponding to it.
  • the receiving channel RX is also multiplexed to obtain the power level of the reflected signal REV in the standing wave detection in addition to the normal signal receiving work
  • the antenna calibration network is also multiplexed to obtain each The power level of the forward signal FWD corresponding to each radio frequency interface. That is, in the present disclosure, by multiplexing the receiving channel RX and the antenna calibration network, the solution of using the detection channel ORX to realize the standing wave detection in the related art is replaced, and the detection channel ORX and the detection channel in the network device (eg, the base station) are omitted.
  • the corresponding circuit structure of the signal acquisition device and switching device of the ORX simplifies the device structure of the network equipment, improves the utilization rate of the network equipment space, and reduces the wiring area and cost of the network equipment.
  • multiple receiving channels RX can simultaneously receive the power levels of the reflected signals REV corresponding to multiple radio frequency interfaces without passing the switch structure shown in FIG. 2 .
  • the channels are switched one by one, thereby improving the standing wave detection efficiency of network equipment and enabling efficient detection of network equipment (eg, 5G base stations).
  • the network device may include 64 receive channels RX (RX1 to RX64) and 64 transmit channels TX (TX1) to TX64), corresponding to 64 RF interfaces (RF interface 1 to RF interface 64).
  • the antenna calibration network is an n-in-one calibration network for compensating for the phase and amplitude difference between radio paths, and the embodiments of the present disclosure do not make any difference to how the antenna calibration network obtains the power level of the forward signal FWD.
  • the antenna calibration network is connected to a channel corresponding to each radio frequency interface through a plurality of forward signal acquisition devices 23 .
  • the forward signal acquisition device 23 may be a coupler.
  • the embodiments of the present disclosure do not specifically limit how the transmit channel TX and the receive channel RX are connected to the radio frequency interface of the network device.
  • the network device further includes a plurality of circulators 30 , and both the transmit channel TX and the receive channel RX can communicate with all the circulators 30 through the circulators 30 .
  • the standing wave detection signal sent by the transmission channel TX can be unidirectionally transmitted to the radio frequency interface of the network device through the circulator 30, and the power level of the reflected signal REV returned by the radio frequency interface of the network device can pass through the radio frequency interface of the network device.
  • the circulator 30 transmits unidirectionally to the transmit channel TX.
  • a receiving channel RX1 can selectively conduct with the antenna calibration network or the radio frequency interface of the network device through the first selection switch 11 .
  • the step S1 of detecting the power level of the forward signal FWD further includes, before sending the standing wave detection signal: controlling the one receiving channel RX1 to conduct with the antenna calibration network (that is, controlling the first selection switch 11 to The receiving channel RX1 is connected to the antenna calibration network);
  • the step S2 of detecting the power level of the reflected signal REV also includes, before sending the standing wave detection signal: controlling a plurality of the receiving channels RX to pass through the corresponding circulators 300 and corresponding The radio frequency interface is turned on (that is, control the selection switches corresponding to the receiving channels RX1 to RX64 (see Figure 4), and connect the receiving channels RX1 to RX64 with the corresponding radio frequency interface, so as to realize that all the receiving channels RX are connected to the corresponding radio frequency interface turn on).
  • the step S2 of detecting the power level of the reflected signal REV further includes, before sending the standing wave detection signal: controlling a plurality of the receiving channels RX to calibrate with the antenna The network is turned on (ie, the first selection switch 11 is controlled to connect the corresponding receiving channel RX to the antenna calibration network, so that all the receiving channels RX are connected to the antenna calibration network).
  • the step S1 of detecting the power level of the FWD also includes, before sending the standing wave detection signal: controlling a receiving channel RX (that is, the receiving channel RX connected to the first selection switch 11 ) to communicate with the network through the circulator 30 The RF interface of the device is turned on.
  • the step S3 of obtaining the standing wave ratios corresponding to the multiple transmission channels TX of the network device may include the following steps S31 to S33:
  • step S31 the forward detection power linearity value is obtained from the power of the forward signal FWD, and the reverse detection power linearity value is obtained from the power of the reflected signal REV.
  • step S32 a reflection coefficient is obtained according to the linear value of the forward detection power and the linear value of the reverse detection power.
  • step S33 the standing wave ratio of the network device is obtained according to the reflection coefficient.
  • step S31 the power of the forward signal FWD is obtained from the receiving channel RX gain of the antenna calibration network and the power level of the detected forward signal FWD, and the power of the reflected signal REV is obtained by
  • the gain of each receive channel is obtained from the transmit channel TX gain of the antenna calibration network and the power level of the detected reflected signal REV, specifically:
  • the standing wave detection method further includes the step S0 of acquiring the standing wave signal level to calibrate the standing wave detection signal, including the following steps S01 and S02:
  • step S01 a transmission channel TX of the network device is controlled to send out a standing wave detection signal (the power is denoted as P actx ).
  • step S02 multiple receiving channels RX of the network device are controlled to obtain the standing wave signal level (the power is recorded as an array P rx (i)) through the antenna calibration network.
  • the transmit channel TX gain G actx of the antenna calibration network and the receive channel RX gain G acrx of the antenna calibration network are both measured in the production testing stage.
  • step S31 the calculation formula for calculating the linear value of the forward detection power and the linear value of the reverse detection power is as follows:
  • step S32 the calculation formula for calculating the reflection coefficient is as follows:
  • step S33 the formula for calculating the standing wave ratio of the network device is as follows:
  • i the channel number.
  • the network device includes 64 radio frequency interfaces and corresponding 64 receiving channels RX and 64 transmitting channels TX, i can take 1 to 64, and finally the value of the standing wave ratio VSWR corresponding to the 64 channels can be calculated.
  • a standing wave detection apparatus for a network device, including: a storage medium, in which an executable program is stored; one or more processors, the one or more The processor can call the executable program to implement the standing wave detection method described in the previous embodiment. Therefore, by multiplexing the receiving channel RX and the antenna calibration network, instead of using the detection channel ORX to realize the standing wave detection scheme in the related art, the structure of the network equipment is simplified, the wiring area and cost of the network equipment are reduced, and the performance of the network equipment is improved. Standing wave detection efficiency.
  • a network device including an antenna calibration network, a standing wave detection device, multiple transmit channels TX and multiple receive channels RX, the antenna calibration network and the multiple receive channels connected, the standing wave detection device is the standing wave detection device described in the previous embodiment.
  • the receiving channel RX is also used to obtain the power level of the reflected signal REV in the standing wave detection in addition to the normal signal receiving work.
  • the antenna calibration network also Used to obtain the power level of the forward signal FWD corresponding to each radio interface. That is, in the present disclosure, by multiplexing the receiving channel RX and the antenna calibration network, the solution of using the detection channel ORX to realize standing wave detection in the related art is replaced, and the detection channel ORX in the network device and the detection channel ORX used by the transmitter are omitted.
  • Corresponding circuit structures such as signal acquisition device and switch device for channel TX and receiving channel RX to acquire signals, thereby simplifying the device structure of network equipment, improving the utilization rate of network equipment space, and reducing the wiring area and cost of network equipment.
  • multiple receiving channels RX can simultaneously receive the power level of the reflected signal REV corresponding to multiple radio frequency interfaces, which improves the standing wave detection efficiency of network equipment and can achieve high efficiency of network equipment. detection.
  • the network device may be a base station (eg, a 5G base station).
  • This embodiment of the present disclosure does not specifically limit how the antenna calibration network acquires the power level of the forward signal FWD.
  • the antenna calibration network is connected to a channel corresponding to each radio frequency interface through a plurality of forward signal acquisition devices 23 .
  • the forward signal acquisition device 23 may be a coupler.
  • the network device further includes a first selection switch, the first selection switch 11 is connected to a receiving channel RX, and the receiving channel RX is selectively connected to the receiving channel RX through the first selection switch 11 .
  • the antenna calibration network or the radio frequency interface of the network device is connected.
  • the network device further includes a plurality of circulators 30 , and each of the transmit channels TX and each of the receive channels RX is connected to the radio frequency interface of the network device through the corresponding circulator 30 .
  • the standing wave detection signal sent by the transmission channel TX can be unidirectionally transmitted to the radio frequency interface of the network device through the circulator 30 , and the reflected signal REV returned by the radio frequency interface of the network device can be unidirectionally transmitted through the circulator 30 . to the transmit channel TX.
  • the network device further includes a plurality of transmitting devices 21 and a plurality of receiving devices 22, each of which The transmitting channel TX is connected to the circulator 30 through the transmitting device 21 , and each receiving channel RX is connected to the circulator 30 through the receiving device 22 , so as to be stabilized by the transmitting device 21 and the receiving device 22 Signal quality of transmit channel TX and receive channel RX.
  • the embodiments of the present disclosure do not specifically limit the types of the transmitting device 21 and the receiving device 22.
  • the transmitting device 21 may be a power amplifier (PA, Power Amplifier)
  • the receiving device 22 may be a low noise Amplifier (LNA) or Switching Low Noise Amplifier (DSLNA).
  • the network device in order to realize a multiplexed antenna calibration network (AC network), the network device further includes a second selection switch 12 and a third selection switch 13,
  • the transmission channel TX is selectively connected to the circulator 30 or the third selection switch 13 through the second selection switch 12
  • the antenna calibration network is selectively connected to the transmission through the third selection switch 13 .
  • the channel TX or the receiving channel RX is connected, so that the antenna calibration network can respectively complete the task of antenna calibration and the task of network equipment standing wave detection in different time periods through the switch.
  • the network device provided by the present disclosure replaces the solution of using the detection channel ORX to realize standing wave detection in the related art by multiplexing the receiving channel RX and the antenna calibration network, and omits the detection channel ORX, the signal acquisition device, and the switch device in the network device. and other corresponding circuit structures, thereby simplifying the equipment structure of the network equipment, improving the utilization rate of the network equipment space, and reducing the wiring area and cost of the network equipment.

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

Abstract

La présente demande concerne un procédé de détection d'ondes stationnaires et un appareil de détection d'ondes stationnaires pour un dispositif de réseau, et un dispositif de réseau. Le procédé de détection d'ondes stationnaires comprend : la mesure d'un niveau de puissance d'un signal réfléchi et d'un niveau de puissance d'un signal direct d'un dispositif de réseau ; et l'obtention, selon le niveau de puissance mesuré du signal réfléchi et le niveau de puissance mesuré du signal direct, de taux d'ondes stationnaires correspondant à une pluralité de canaux d'émission du dispositif de réseau. Des étapes pour mesurer un niveau de puissance d'un signal réfléchi comprennent : l'envoi de signaux de détection d'ondes stationnaires par le biais d'une pluralité de canaux d'émission d'un dispositif de réseau ; et l'obtention d'un niveau de puissance d'un signal réfléchi par le biais d'une pluralité de canaux de réception du dispositif de réseau. Des étapes pour mesurer un niveau de puissance d'un signal direct comprennent : la commande d'une pluralité de canaux d'émission d'un dispositif de réseau pour envoyer des signaux de détection d'ondes stationnaires ; et la commande d'un canal de réception pour obtenir un niveau de puissance d'un signal direct via un réseau de calibrage d'antenne.
PCT/CN2021/103365 2020-06-30 2021-06-30 Procédé de détection d'ondes stationnaires, appareil de détection d'ondes stationnaires et dispositif de réseau WO2022002099A1 (fr)

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CN202010616791.6A CN113949465A (zh) 2020-06-30 2020-06-30 驻波检测方法、驻波检测装置及网络设备

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CN115051763A (zh) * 2022-06-16 2022-09-13 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

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