Steady beamforming method for millimeter-wave high-speed train-to-ground communication based on location fairness

Abstract

The invention discloses a method for stabilizing the beamforming of millimeter-wave high-speed rail vehicle-to-ground communication based on location fairness, which includes the following steps: Step 1: constructing an interleaved redundant coverage network architecture; Step 2: establishing a transmission beam width optimization problem; Step 3: determining beam allocation Solution: According to the problem of transmitting beam width optimization, calculate the required transmitting beam width and the corresponding beam boundary point position of the vehicle-mounted mobile relay node at each point within the coverage of the base station; Step 4: Switch the best service beam: through the train The positioning system obtains the position information of the train at the current moment, and switches the best service beam for the on-board mobile relay node according to the transmitted beam width and beam boundary point position obtained in the beam allocation scheme and the position information of the train; Step 5: Calculate the train Fluctuation factor and outage probability of communication systems. The invention has the advantages of improving the stability of data transmission in the high-speed rail wireless communication system and ensuring a lower probability of communication interruption.

Description

Technical field[0001]The present invention relates to the field of wireless mobile communication, and more particularly to communication stabilizing beamforming method based on positional millimeter high-speed rail vehicles.Background technique[0002]As a typical scene of 5G applications, high-speed rail mobile communications has always been one of the focus issues of academic research. In my country, the railway manufacturing (especially high-speed rail) and the new generation of wireless mobile communication systems are two major advantage industries. At present, China Railway Corporation is developing a new generation of intelligent high-speed rail. Intelligent high-speed rail will adopt advanced technical means such as cloud computing, Internet of Things, Big Data, Beidou, next-generation mobile communication and artificial intelligence, through the integration of new generation information technology and high-speed railway technology, realizing high-speed rail intelligent constr...

AI Technical Summary

Problems solved by technology

In the coverage area of ​​the cell, when the train is in different positions, the base station uses beams of different widths to serve the train; and a beam boundary determination scheme based on the bisection algorithm is proposed; this method can reduce the fluctuation of data transmission and improve the efficiency of train communication Stability; however, in some locations, the data transfer rate still fluctuates widely

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