A microwave switch type multi-output and multi-input antenna system with high dynamic LTE conversion technology for high-speed railway broadband private network

A microwave switch, multiple output and multiple input technology, which is applied to the antenna, radio transmission system, antenna and other directions suitable for movable objects, and can solve the frequent switching of Doppler frequency shift cells, the penetration loss of high-speed trains, the communication network Unable to meet and other problems, to achieve the effect of avoiding penetration loss, enhancing signal strength, and strong versatility

Active Publication Date: 2018-06-19
中科凯普(北京)导航通信技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fundamental reason is that the coverage radius of the traditional ground communication base station is small, the high-speed movement causes serious Doppler frequency shift and the frequent handover of the cell, and the high-speed rail train penetration loss is as high as 30dB, which makes the current communication network unable to meet the current high-speed rail communication requirements

Method used

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  • A microwave switch type multi-output and multi-input antenna system with high dynamic LTE conversion technology for high-speed railway broadband private network
  • A microwave switch type multi-output and multi-input antenna system with high dynamic LTE conversion technology for high-speed railway broadband private network
  • A microwave switch type multi-output and multi-input antenna system with high dynamic LTE conversion technology for high-speed railway broadband private network

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Effect test

Embodiment 1

[0041] The microwave switch type multi-output and multi-input antenna system adopting the above-mentioned high-speed rail broadband private network high dynamic LTE conversion technology of the present invention, the height H of the iron tower of the private network base station is 8m, and the vertical distance D from the railway is 200m; the high-speed rail private network base station antenna subsystem and The maximum gains of the high-gain antennas in the high-speed rail vehicle antenna subsystem are 20dB and 15dB, respectively, and the maximum gains of the omnidirectional antennas are 8dB and 4dB, respectively. Compared with traditional means of communication, the coverage of the base station is 20km, which is about 10 times higher than that of traditional base stations; the signal strength is increased by 30-45dB.

Embodiment 2

[0043] The microwave switch type multi-output and multi-input antenna system adopting the above-mentioned high-speed rail broadband private network high dynamic LTE conversion technology of the present invention, the height H of the iron tower of the private network base station is 15m, and the vertical distance D from the railway is 200m; the high-speed rail private network base station antenna subsystem and The maximum gains of the high-gain antennas in the high-speed rail vehicle antenna subsystem are 20dB and 15dB, respectively, and the maximum gains of the omnidirectional antennas are 8dB and 4dB, respectively. Compared with traditional means of communication, the coverage of the base station is 28km, which is about 14 times higher than that of traditional base stations; the signal strength is increased by 30-45dB.

Embodiment 3

[0045] The microwave switch type multi-output and multi-input antenna system adopting the above-mentioned high-speed rail broadband private network high dynamic LTE conversion technology of the present invention, the height H of the iron tower of the private network base station is 30m, and the vertical distance D from the railway is 200m; the antenna subsystem of the high-speed rail private network base station and The maximum gains of the high-gain antennas in the high-speed rail vehicle antenna subsystem are 20dB and 15dB, respectively, and the maximum gains of the omnidirectional antennas are 8dB and 4dB, respectively. Compared with traditional communication methods, the coverage of the base station is 40km, which is about 20 times higher than that of traditional base stations; the signal strength is increased by 30-45dB.

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Abstract

The invention discloses a microwave switch multiple input multiple output antenna system of a high-speed rail broadband special-purpose network high dynamic transformer LTE technology. The system comprises high-speed rail special-purpose network base station antenna subsystems and high-speed rail vehicle-mounted antenna subsystems, and is characterized in that each high-speed rail special-purpose network base station antenna subsystem comprises an iron tower, a radio frequency / intermediate frequency module (RICM), a high-gain antenna, an omnidirectional antenna and a base station baseband (BBM); and each high-speed rail vehicle-mounted antenna subsystem comprises a radio frequency / intermediate frequency conversion module (RICM), a high-gain antenna, an omnidirectional antenna, a microwave switch and a servo control unit. The microwave switch multiple input multiple output antenna system of a high-speed rail broadband special-purpose network high dynamic LTE transformer is suitable for high-speed rail communication and overcomes the technical problem of high-dynamic nonlinear capture and tracking of base station antennas by vehicle-mounted antennas under a high-speed motion condition of 350-500km / h in high-speed rail special-purpose network communication.

Description

technical field [0001] The invention belongs to the field of high-speed rail communications, and in particular relates to a high-gain antenna system for a high-dynamic LTE private network of a high-speed rail. Background technique [0002] High-speed rail refers to China's high-speed railway, which usually runs at a speed of more than 250km / h. my country has nearly 20,000 kilometers of high-speed railways in operation, and dozens of high-speed railways under construction will also be put into commercial operation in the future. The development of high-speed railway technology, including mechanisms, drives, and controls, has entered the international advanced ranks. Asia, Africa, Europe and North America. High-speed rail has become an important business card for the achievements of my country's reform and opening up. However, high-speed rail communication is still in a very backward state. The current ground communication methods require operators (China Mobile, China Unicom...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0413H01Q1/32H01Q1/42
CPCH01Q1/3216H01Q1/42H04B7/0413
Inventor 庞峰胡超崔君霞万庆涛王希和王鹏
Owner 中科凯普(北京)导航通信技术有限公司
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