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Method and device for detecting standing-wave ratio of RRU

A remote radio frequency unit and VSWR detection technology, applied in the field of mobile measurement, can solve problems such as device burnout, achieve accurate VSWR detection, improve measurement efficiency, and reduce measurement costs

Active Publication Date: 2015-01-07
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology

[0003] If the standing wave ratio of the base station system is too large and cannot be detected accurately, it will cause RF (Radio Frequency Signal, radio frequency signal) to be poured into the radio frequency port of the RRU from the antenna port, causing the power amplifier PA (power amplifier, power amplifier) ​​in the RRU to Phenomenon such as device burnout

Method used

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  • Method and device for detecting standing-wave ratio of RRU
  • Method and device for detecting standing-wave ratio of RRU
  • Method and device for detecting standing-wave ratio of RRU

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Embodiment Construction

[0064] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0065] refer to figure 1 The structure diagram of a base station remote radio unit RRU is shown, and the standing wave ratio detection is implemented at the calibration plane, which may specifically include a circulator, a voltage controlled oscillator (VCO, voltage controlled oscillator), a coupler (Coupler), a mixer Frequency converter (Mixer), analog-to-digital converter (ADC, Analog to Digital Converter), PA, load. If the standing wave ratio of the base station system is too large and cannot be accurately detected, RF (Radio Frequency Signal, radio frequency signal) will be poured from the antenna port into the radio frequency port of the RRU, resulting in the burning of the power amplifier PA.

[0066] At present, the standi...

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Abstract

The invention provides a method and device for detecting the standing-wave ratio of an RRU. Calibration data are stored in the RRU. The method includes the steps that swept-frequency signals are generated; the swept-frequency signals are sent to equipment to be detected through a preset training sequence; the RRU is adopted for capturing RPD feedback data and OPD feedback data of the equipment to be detected; reflection parameters are calculated according to the RPD feedback data and the OPD feedback data; by the adoption of the reflection parameters and the calibration data in the RRU, accurate reflection coefficients are calculated; the accurate reflection coefficients are adopted for calculating an average reflection coefficient in a designated bandwidth; the standing-wave ratio is calculated through the average reflection coefficient. The method and device are used for accurately detecting the standing-wave ratio of the RRU.

Description

technical field [0001] The present invention relates to the technical field of mobile measurement, in particular to a method for detecting the standing wave ratio of a remote radio frequency unit RRU, and a device for detecting the standing wave ratio of the remote radio frequency unit RRU. Background technique [0002] The current popular base station system architecture mainly adopts a distributed structure, which is composed of RRU (Remote Radio Unit, remote radio frequency unit) and BBU (Building Base band Unit, indoor baseband processing unit). An important function of the base station system architecture is to realize the detection of the standing wave ratio of the system, which is an index for measuring reflective characteristics. SWR (Standard Wave Ratio, standing wave ratio) / VSWR (Voltage Standing Wave Ratio, voltage standing wave ratio) refers to the detection of each antenna channel of RRU, so as to measure the standing wave value of each antenna port of RRU, so a...

Claims

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Application Information

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IPC IPC(8): H04B17/00
Inventor 王世华薛斌艾宝强王杰丽
Owner DATANG MOBILE COMM EQUIP CO LTD
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