Method for reinforcing wireless coverage of vehicle-ground communication system in vacuum tube in consideration of fault conditions

Abstract

The invention provides a method for reinforcing wireless coverage of a vehicle-ground communication system in a vacuum tube by considering a fault condition. The method comprises the following steps: a plurality of continuously and seamlessly arranged leakage waveguide sections are adopted as a wireless transmission medium of a vehicle-ground communication system in a vacuum tube, a BBU and a plurality of RRUs are arranged in a cell, the BBUs are connected through optical fibers, the BBUs control the RRUs deployed along a pipeline in a linear mode, and the frequency points of the RRUs in the cell are the same; each RRU is connected to two adjacent sections of leakage waveguides through a power divider, the two ends of one section of leakage waveguide are connected with the two adjacent RRUs to form redundant coverage of the RRUs in a cell, and one section of leakage waveguide at the boundary of each cell is connected with the boundary RRUs of the two adjacent cells to form an inter-cell wireless coverage overlapping region. According to the method provided by the embodiment of the invention, the train can communicate with high reliability without interruption in a vacuum high-speed environment, the handover time is reduced, and the handover success rate is improved.

Description

Technical field [0001] The present invention relates to the technical field of wireless communication, and in particular to a method for reinforcing the wireless coverage of a vehicle-to-ground communication system in a vacuum tube considering failure conditions. Background technique [0002] Since it was proposed in the 18th century, the concept of Evacuated Tube Transportation (ETT) has attracted countless researchers and engineers. Although several key ETT technologies that have been proposed are far from mature and practical, the consensus on all aspects of ETT is Gradually formed. For example, assuming a vacuum pipeline system can be realized, underground tunnels or ground metal pipelines can isolate extreme weather and the surrounding electromagnetic environment to a large extent, which may bring many advantages, such as high speed, safety, high energy efficiency and environmental protection , So as to meet the rapidly developing society's increasing demand for greater tra...

AI Technical Summary

Problems solved by technology

Compared with communication in a stationary state or a low-speed moving state, communication in a high-speed railway environment faces more challenges. The higher the speed of the train, the greater the impact on communication, such as frequent switching, severe Doppler Le frequency shift and penetration loss etc.

Therefore, how to ensure the success rate of switching of high-speed trains in vacuum is facing great challenges.

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