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Narrowband wireless communication system and method

A wireless communication system and wireless communication technology, applied in the field of narrow-band high-reliability wireless communication systems, can solve the problems of different application scope and technical requirements, and cannot meet the requirements of railway narrow-band high-reliability wireless transmission and communication, and achieve the effect of improving reliability

Active Publication Date: 2020-06-02
CRSC RESEARCH & DESIGN INSTITUTE GROUP CO LTD
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  • Abstract
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Problems solved by technology

At present, the railway communication private network can consider allocating 12.5kHz bandwidth to realize a narrowband communication system near the 400MHz frequency band, but there is currently no wireless communication system that can meet the needs of railway applications in this frequency band bandwidth and can take into account high transmission rate, high reliability, and high mobility.
[0008] In summary, due to the different scope of application and technical requirements, the existing communication systems cannot meet the communication requirements of railway narrow-band high-reliability wireless transmission, and it is necessary to design a new narrow-band high-reliability wireless communication system and method

Method used

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  • Narrowband wireless communication system and method

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Embodiment Construction

[0100] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0101] As used herein, "comprising", "comprising", "having", "comprising" and so on are all open terms, meaning including but not limited to.

[0102] The term "plurality" herein includes "two" and "more than two".

[0103] Please refer to figure 1 , figure 1 It is a schematic diagram of the functional layered structure of ...

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Abstract

The invention belongs to the technical field of rail transit. The invention discloses a narrowband wireless communication system and a narrowband wireless communication method, the narrowband wirelesscommunication system is used for communication between vehicle-mounted equipment and ground equipment, the narrowband wireless communication system comprises an application layer, a security layer, adata link layer and a physical layer, wherein the application layer receives or outputs communication data for interaction between the vehicle-mounted equipment and the ground equipment; the securitylayer adopts a secure transmission protocol to ensure the information security of communication data and the transmission security of the communication data; the data link layer provides processing and output of communication data; the physical layer transmits a bit stream on a bottom wireless channel, performs source channel encoding and decoding, modulation and demodulation on communication data, and sends and receives signals. On the basis of high reliability, the transmission rate of the system can be improved, and the out-of-band rejection ratio is high.

Description

technical field [0001] The invention belongs to the technical field of rail transit, and in particular relates to a narrow-band high-reliability wireless communication system and method. Background technique [0002] With the continuous development of communication technology and the increasing demand for communication quality in various fields, the reliability of communication systems has become the key to engineering design. In various application scenarios, the reliability and safety of industrial control fields such as railway signal transmission are particularly important. Common wireless communication systems include mobile communication technologies such as GSM, CDMA, LTE and other standards, as well as point-to-point or cluster technologies such as walkie-talkie communication and wireless data transmission stations that work in the ultra-short band. Transmission is suitable for low-speed motion scenarios. When the terminal is moving at high speed, the data transmiss...

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Application Information

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IPC IPC(8): H04W4/44H04W28/22H04L25/03H04L1/00
CPCH04L1/0002H04L1/0013H04L1/0057H04L1/0061H04L25/03866H04W4/44H04W28/22
Inventor 师进段增睿周宇晖韦文胡莉丽刘亦伟王欣
Owner CRSC RESEARCH & DESIGN INSTITUTE GROUP CO LTD
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