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Leaky cable based LTE (long term evolution) wireless signal coverage system in tunnel environment

A technology of leaking cables and wireless signals, applied in the field of communication, can solve the problems of limited equipment installation space, strong multipath effect, narrow tunnel space, etc., and achieve the effect of large signal coverage and uniform signal coverage

Inactive Publication Date: 2015-02-18
TRAFFIC CONTROL TECH CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] However, the application of the networking mode of the public network LTE communication system in the tunnel environment has the following defects: the tunnel environment is a narrow and long channel, which is not conducive to the visible transmission of wireless signals; The effect is strong and the interference is serious; the signal coverage is limited, and it is difficult to achieve dual-redundant coverage of wireless signals; the equipment installation space is limited, it is impossible to install multiple antennas, and it is impossible to realize the multi-input multi-output (Multi-Input Multi-Output) of the antenna signal uplink , referred to as MIMO) function

Method used

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  • Leaky cable based LTE (long term evolution) wireless signal coverage system in tunnel environment
  • Leaky cable based LTE (long term evolution) wireless signal coverage system in tunnel environment
  • Leaky cable based LTE (long term evolution) wireless signal coverage system in tunnel environment

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Embodiment Construction

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] The LTE technology itself has a high radio frequency signal transmission power (up to 20W), and has the ability to cover a wide range of wireless signals. Using leaky cables as the transmission medium of wireless signals in the tunnel environment can make the wireless signals evenly cover along the track. The transmission loss of the leaky cable is small, and the insertion loss changes linearly with the length of the leaky cable. The stability and chang...

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Abstract

The invention provides a leaky cable based LTE (long term evolution) wireless signal coverage system in tunnel environment. The system comprises a core network, a plurality of baseband processing units, a plurality of remote radio units and a plurality of leaky cables; the core network is connected with the baseband processing units, each processing unit is connected with the remote radio units, and every two adjacent remote radio units are connected through one leaky cable. The leaky cables are used as transmission media, LTE wireless signal coverage in the tunnel environment is performed, the system is used for realizing dual-network dual-redundancy coverage of wireless signals, an LTE uplink wireless communication link MIMO (multiple input multiple output) method is realized, signal coverage range is large, and signal coverage is uniform.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to an LTE wireless signal coverage system based on a leaky cable in a tunnel environment. Background technique [0002] Long Trem Evolution (LTE for short) technology has been put into global commercial operation. Due to its flat network structure design, large signal coverage, support for multi-signal bandwidth, support for high-speed mobile terminals, and rich spectrum resources, it has caused The attention of many private network users. [0003] At present, industries such as petroleum, ports, and airports have adopted LTE technology for wireless private network coverage, and the railway industry has started research on LTE-R. At the same time, the urban rail transit signal control industry has also begun research on the application of LTE technology to vehicle-ground wireless communication. . The LTE technology communication public network consists of a core network, a b...

Claims

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Application Information

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IPC IPC(8): H04W16/18H04W16/26
CPCH04W16/18H04W16/26
Inventor 杨雪涛
Owner TRAFFIC CONTROL TECH CO LTD
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