Multi-mode mine mobile communication system

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 coal mine underground mobile communication system, in particular to a multi-mode mine mobile communication system. Background technique [0002] Most of the existing mine mobile communication systems use cell-based cellular networks, with one antenna at the sending end and one 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 (that is, single-input single-output, SISO) suffers from severe multipath fading, large impact of environmental noise, small channel capacity and large transmission loss, etc. The problem is that it is difficult to meet the needs of mobile communication and mobile monitoring in mines, especially in mine environments with deep multipath fading. Due to the explosion-proof requirements of underground equipment and the limited transmitter power, it is difficul...

AI Technical Summary

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

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