Crrc Zhuzhou Electric Locomotive Research Institute Co., Ltd.

New Jersey Institute of Technology

Tairan Zhang

Jianghua Feng

Nirwan Ansari

Mengchu Zhou

Roberto Rojas-Cessa

Gaohua Chen

Jun Tang

Guotao Jiang

Jiabo Xiao

Mina Taheri

Qinghua Quan

Qiang Fan

Dajun Wang

Qi Lu

A method and a system for rail transit communication. The method includes: selecting a second target FSO transceiver from the FSO transceivers that are currently located within a signal coverage of a target FSO base station, in response to detecting that a first target free-space-optics (FSO) transceiver moves out of the signal coverage of the target FSO base station when data communication between the target FSO base station and the target user terminal is performed via the first target FSO transceiver, where the target FSO base station is one of the FSO base stations located on the rail; and maintaining the data communication between the target FSO base station and the target user terminal, by using the second target FSO transceiver. Handover among the base stations is reduced for user equipment, data communication rate is increased, and communication experience of passengers can be improved.

Rail transit communication method and system

An FSO communication system includes a laser, an optical detector and a first optical adjustment module and a controller. The laser is configured to emit an optical signal. The optical detector is configured to receive an optical signal from the first optical adjustment module. The controller is configured to obtain an optical power of an optical signal received by the optical detector; and generate a control command based on the optical power and transmit the control command. The first optical adjustment module is configured to: receive the control command and the optical signal emitted by the laser; adjust, in response to the control command, the optical signal emitted by the laser to cause the optical power of the optical signal received by the optical detector to be in a preset reasonable range; and transmit the adjusted optical signal to the optical detector.

FSO communication system

Growing community of inventors

Hunan, China

Tairan Zhang