Dual-mode wireless communication device and railway vehicle-mounted equipment formed by the same

Abstract

The invention discloses a dual-mode wireless communication device and railway vehicle-mounted equipment formed by the same. The dual-mode wireless communication device comprises a GSM-R chipset, an LTE-R chipset, a linear power amplifier, a low noise amplifier, a duplexer and a first external antenna. According to the dual-mode wireless communication device, GSM-R and LTE-R dual-mode combination is realized through the duplexer; the GSM-R communication system and the LTE-R communication system are supported at the same time under the condition that the appearance size and performance of existing equipment are not changed, and a GSM-R hardware communication interface and a software protocol are reserved, and high-power output of GSM-R signals of railway vehicle-mounted equipment is kept; and on the other hand, the dual-mode wireless communication device can enable the LTE-R chipset to realize single-transmitting and single-receiving under the condition of not increasing the number of antennas of the existing equipment.

Description

Technical field [0001] The invention relates to a dual-mode wireless communication device for railway vehicle-mounted equipment, and also relates to a railway vehicle-mounted equipment composed of the dual-mode wireless communication device, belonging to the technical field of railway dedicated communication. Background technique [0002] At present, my country's railway mobile communication mainly adopts the GSM-R communication system (a comprehensive dedicated digital mobile communication system specially designed for railway communication). The GSM-R communication system is a narrowband communication system with low spectrum utilization rate, which is difficult to meet the development needs of railway broadband data services in the future; on the other hand, as the public mobile communication network develops from 2G, 3G to 4G, the GSM market is gradually Shrinking, the GSM-R communication system will lose the support of the equipment industry chain. With the continuous incre...

AI Technical Summary

Problems solved by technology

[0004] The current on-board equipment of the railway system only supports the GSM-R network and does not support the LTE-R network; the existing transition solution is to directly add an LTE-R single-mode module to the railway on-board equipment, but the number of antennas needs to be increased; due to the existing The space of most railway on-board equipment is limited, and it is impossible to support the direct addition of LTE-R single-mode modules on the basis of existing equipment in practice

Images