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A multi-mode mine mobile communication system

A mobile communication system and multi-mode technology, applied in the field of multi-mode mine mobile communication system, can solve problems such as poor anti-interference ability, small channel capacity, and existence of communication blind spots, so as to achieve enhanced robustness, no signaling overhead, and overcome The effect of downhole multipath interference

Active Publication Date: 2017-01-25
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Abstract
  • Description
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Problems solved by technology

[0003] The main purpose of the present invention is to provide a multi-mode mine mobile communication system and data transmission method, aiming to solve the above shortcomings, especially to overcome the existing mine communication system channel capacity is small, poor anti-interference ability and existing communication The problem of blind spots provides a multi-mode mine mobile communication system and data transmission method with high bandwidth, strong anti-interference ability, wide coverage and good communication quality

Method used

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  • A multi-mode mine mobile communication system
  • A multi-mode mine mobile communication system
  • A multi-mode mine mobile communication system

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Embodiment Construction

[0043] figure 1 It is a schematic diagram of the composition of a multi-mode mine mobile communication system. The system described in the embodiment includes a control system, a passive optical network, a SISO base station 40, a MIMO base station 50, a distributed MIMO antenna and a underground mobile terminal 80. The passive optical network is composed of the optical line terminal 10, the optical link and the MIMO communication gateway 60; the distributed MIMO antenna is composed of the MIMO communication gateway 60 and the remote antenna unit 70; the control system is composed of the base station controller 20 and the well scheduling device 90 . The underground mobile terminal 80 accesses the wireless network through the remote antenna unit 70. In the mine mobile communication system, both wireless and wired services are transmitted on optical fibers, optical signals are used as carriers, radio frequency signals are used as modulated signals, and the optical fiber is a long...

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Abstract

The invention discloses a multi-mode mine mobile communication system which comprises a control unit, a tree structure passive optical network, a downhole explosion-proof MIMO base station, a downhole explosion-proof SISO base station, a distributed MIMO antenna and a downhole mobile terminal. Multiple modes are dynamically adopted for the system in operation, wherein in the SISO mode, SISO signals are processed through the system by means of a communication gateway of the distributed MIMO antenna and a far-end antenna unit; in the MIMO mode, MIMO output signals are processed through the system by means of the communication gateway of the distributed MIMO antenna and a far-end antenna unit group; in the mixed mode, the SISO signals and the MIMO output signals are processed through the system by means of the communication gateway of the distributed MIMO antenna and antenna unit groups. The system is simple in structure, flexible in deployment, large in the channel capacity, high in anti-jamming capability, wide in network coverage area, capable of overcoming near-far effects, eliminating communication dead zones and meeting the requirements for mining specific operating environments and security and applicable to underground coal mine mobile communication and mobile monitoring.

Description

Technical field [0001] The patent of the present invention relates to a mobile communication system underground in coal mines, specifically to a multi-mode mine mobile communication system. Background technique [0002] Most of the existing mine mobile communication systems use a cell-based cellular network, with an antenna at the sending end and the receiving end. However, for the limited non-free space environment of the mine, the traditional underground single transmitting antenna and single receiving antenna signal system (ie, single input single output, SISO) has serious multipath fading, large environmental noise impact, small channel capacity and large transmission loss. The problem is that it is difficult to meet the needs of mine mobile communication and mobile monitoring, especially in the mine environment with large multipath fading depth. Due to the explosion-proof requirements of underground equipment and the limited transmitter power, it is difficult to overcome dee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/04H04B7/08H04W4/04H04W16/20
Inventor 张帆
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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