Urban environment electric wave path prediction method and device

Abstract

The invention discloses an urban environment electric wave path prediction method and device. The method comprises the steps of acquriing effective building and geographic entity information from a three-dimensional urban model jointly constructed based on a geographic information system and a building information model; acquiring electromagnetic parameters, expressing the electromagnetic parameters, the effective buildings and the geographic entity information in a specific data structure, and constructing a three-dimensional electromagnetic city model; predicting electromagnetic waves playing a main role by combining electromagnetic parameters, effective building and geographical entity information according to transmitter and receiver parameters, an electromagnetic wave propagation principle and sparse characteristics of a multipath channel, obtaining building components and geographical entities influencing propagation of the electromagnetic waves according to the predicted electromagnetic waves, and calculating to obtain a telex sparse matrix; and predicting received signal information of each position point in the target prediction scene according to the telex sparse matrix.The method can improve the calculation efficiency of radio wave propagation prediction and reduce the complexity.

Description

technical field [0001] The invention relates to a method and device for predicting an urban environment electric wave path, belonging to the field of radio wave propagation prediction. Background technique [0002] With the development of mobile communication 4G, 5G technology and wireless sensor networks, users have higher and higher requirements for communication speed in complex urban environments, and better wireless communication network planning and optimization work is required. The popularization of urban microcellular and picocellular systems makes traditional empirical models based on measurement data invalid in complex urban environments, and cannot accurately predict the propagation of electromagnetic waves. At present, the ray tracing method is mainly used to predict the propagation of radio waves. This method can predict the propagation path of radio signals, and obtain parameters such as field strength, time delay, angle of arrival, and angle of departure of e...

AI Technical Summary

Problems solved by technology

However, when the environment is complex, the number of ray paths found between the emitting point and the receiving point is relatively large

Among them, many ray paths carry signal energy that is too low, which are invalid paths, waste storage space, and increase some unnecessary calculations

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