Lightning protection radio remote unit, distributed base station and lightning protection system and method thereof

A technology of radio frequency remote unit and power supply system, applied in the field of communication, can solve problems such as increasing cost and equipment volume, and achieve the effect of reducing cost and equipment volume

Active Publication Date: 2015-03-11
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present invention provides a lightning protection radio frequency remote unit, a distributed base station lightning protection system and method, which are used to solve the need in the prior art to install lightning protection modules on both the RRU side and the power supply system side, thereby increasing the cost and equipment volume The problem

Method used

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  • Lightning protection radio remote unit, distributed base station and lightning protection system and method thereof
  • Lightning protection radio remote unit, distributed base station and lightning protection system and method thereof
  • Lightning protection radio remote unit, distributed base station and lightning protection system and method thereof

Examples

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Embodiment 1

[0048] see figure 2, Embodiment 1 of the present invention provides an RRU (Radio Remote Unit, remote radio unit) 10, the RRU 10 includes a primary circuit 101, a secondary circuit 102 and a working circuit 103, the primary circuit 101 is used to pass through the shielded cable The core wire in receives the power output from the power supply system, the secondary circuit 102 cooperates with the primary circuit 101 to convert the power received by the primary circuit 101 to obtain working power, and outputs it through the secondary circuit 102 The working power supply supplies power to the working circuit 103;

[0049] The shielding layer at one end of the shielded cable at the side of the RRU 10 and the shielding layer at one end of the shielded cable at the side of the power supply system are respectively grounded;

[0050] The surge over-voltage withstand capability between the primary circuit 101 and the ground is not less than the lightning over-voltage;

[0051] The su...

Embodiment 2

[0110] see Figure 7, based on the embodiment one embodiment of the present invention provides a distributed base station lightning protection system, including:

[0111] Remote radio unit RRU 20 (or also called remote radio head RRH), the RRU includes an isolated power supply 201 and a working circuit 202, the isolated power supply 201 is used to receive the power output from the power supply system and convert the power obtaining a working power supply to provide the working circuit;

[0112] A shielded cable 21, the shielded cable includes a core wire 211 and a shielding layer 212;

[0113] The isolated power supply 201 includes a primary circuit 2011 and a secondary circuit 2012, the primary circuit is connected to the core wire in the shielded cable, and is used to receive output from the power supply system through the core wire in the shielded cable power supply, the secondary circuit cooperates with the primary circuit to complete the power conversion, and outputs th...

Embodiment 3

[0124] see Figure 8 , the embodiment of the present invention provides a distributed base station based on Embodiment 1, including:

[0125] Remote radio unit RRU 30, shielded cable 31, power supply system 32, baseband unit BBU33;

[0126] The RRU includes an isolated power supply 301 and a working circuit 302, the isolated power supply 301 is used to receive the power output from the power supply system 32 and convert the power to obtain working power to provide to the working circuit 302;

[0127] The shielded cable 31 includes a core wire 311 and a shielding layer 312;

[0128] The BBU 30 is connected to the RRU 30 through an optical fiber for processing baseband signals; the BBU here can be an existing BBU, and its processing method is consistent with the prior art, and will not be repeated here;

[0129] The isolated power supply includes a primary circuit and a secondary circuit, the primary circuit is connected to the core wire in the shielded cable, and is used to r...

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Abstract

The embodiment of the present invention discloses a lightning protection radio frequency remote unit RRU, which includes primary and secondary circuits and a working circuit. The primary and secondary circuits convert the power output from the power supply system to obtain working power to supply power to the working circuit; The shielding layer of the shielded cable at the end of the RRU side and the shielding layer of the shielded cable at the power supply system side are grounded respectively; the surge overvoltage withstand value between the primary circuit and the ground is not less than the lightning strike overvoltage; each core of the shielded cable The surge overvoltage withstand value between the wire and the shielding layer of the shielded cable is not less than the lightning overvoltage. The product is obtained, and the lightning current of the shielding layer is determined according to the lightning current meeting the specific lightning protection level. Through the embodiment of the present invention, there is no need to install a lightning protection module on the RRU side and the power supply system side, thereby reducing the cost and reducing the volume of the equipment.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a lightning protection remote radio unit, a distributed base station and a lightning protection system and method thereof. Background technique [0002] The distributed base station system includes a remote radio unit (RRU, Radio Remote Unit) and a base band unit (BBU, Base band Unit). The RRU is also called RRH (Radio Remote Head) in some places. RRU is taken as an example for description. see figure 1 , The RRU is generally installed on the iron tower, connected to the antenna through the feeder, and connected to the iron tower through the grounding line to be grounded through the iron tower. The BBU is located in the computer room (or other similar shelter) at the far end of the tower, and is connected to the RRU through an optical fiber to send and receive signals that need to be processed. [0003] In order to provide DC power supply for RRU and BBU, the base stati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H9/06
CPCH02H9/06H02H9/04H02H9/041
Inventor 熊膺瞿祥虎
Owner HUAWEI TECH CO LTD
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