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A standing wave ratio detection method, device and base station

A VSWR detection and VSWR technology, applied in transmission monitoring, electrical components, transmission systems, etc., can solve problems such as large errors and inaccurate state detection of antenna-feeder systems, and achieve the effect of improving accuracy and precision

Active Publication Date: 2016-10-05
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method, device and base station capable of detecting the standing wave ratio by using amplitude and phase information, so as to solve the problem that the phase information is not used in the traditional detection of the standing wave ratio of the base station antenna port and the error is large, thereby The problem of inaccurate detection of the status of the antenna feeder system

Method used

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  • A standing wave ratio detection method, device and base station
  • A standing wave ratio detection method, device and base station
  • A standing wave ratio detection method, device and base station

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Embodiment 1

[0026] Such as image 3 Shown is a schematic diagram of an equivalent structure of a standing wave ratio detection circuit structure in the prior art; Figure 4 yes image 3 Schematic diagram of the equivalent parameter model of the circuit structure; such as Figure 5 It is a flow chart of a standing wave ratio detection method provided in Embodiment 1 of the present invention. Combine below image 3 , Figure 4 with Figure 5 Introduce the method of the embodiment of the present invention, including:

[0027] Step S502, determining the equivalent parameter value S of a group of base station antenna ports at the frequency point of interest to the base station;

[0028] no matter how figure 1 still is figure 2 The circuit configuration shown can be used as image 3 The shown circuit structure is equivalently replaced, according to image 3 The structure of the standing wave ratio detection circuit shown can be obtained as Figure 4 The structure diagram of the equi...

Embodiment 2

[0054] Such as Image 6 It is a structural block diagram of a standing wave ratio detection device provided in Embodiment 2 of the present invention, including:

[0055] An equivalent parameter acquisition module 602, configured to acquire an equivalent parameter value S of a group of base station antenna ports at the frequency point of interest of the base station;

[0056] Preferably, the equivalent parameter acquisition module 602 is specifically configured to: connect three different known reflection coefficients Γ at the antenna port of the base station Li The load of the base station transmits the signal of the frequency point of interest, and obtains the power P of the corresponding forward signal FWDi , the power of the reverse signal P REVi , and the phase difference between the forward signal and the reverse signal at this time Using formula (3) to get Γ INi ; where i=1,2,3; will Γ INi and Γ Li Substitute into formula (2) to get three equations, and use these ...

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Abstract

Disclosed are a standing wave ratio detection method, device and base station, belonging to the field of mobile communications. The method includes: determining an equivalent parameter value S of a group of base station antenna ports at the frequency point in which a base station is interested; acquiring the power PFWD of a forward signal of the base station antenna port, the power PREV of a backward signal, and the phase difference ?f between the phases of the forward signal and the backward signal at this moment; and determining the standing wave ratio according to the S, PFWD, PREV and ?f. By way of the present invention, on the basis of the amplitude information about the forward and backward signals of the base station, the phase information affecting the standing wave ratio is calibrated using three different negative carriers, and the standing wave ratio of the base station is then calculated using the amplitude and phase information, improving the precision of the standing wave ratio, and thus improving the accuracy for detecting the connection state of the antenna feeder system.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a method and device for detecting the standing wave ratio of a base station. Background technique [0002] Mobile communication base stations need to transmit radio frequency signals through antennas. However, when there is a problem with the antenna system (feeder and antenna), the downlink signal power cannot be effectively radiated to space through the antenna. This requires 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 antenna port of the base station to reflect whether the antenna feeder system is working normally. [0003] At present, there are two main circuit structures for detecting the standing wave ratio of the antenna port of the base station: one is as follows figure 1 The shown circuit structure indirectly obtains the front and reve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/08
CPCH04B17/336H04B17/318
Inventor 向明飞马兴望
Owner ZTE CORP