High-speed railway microwave communication network

Abstract

The invention discloses a high-speed railway microwave communication network, which is used for realizing signal relay between a movement carrier internal communication network and a carrier external communication network on high-speed railways. The network comprises a plurality of rail base relay devices and at least one vehicle-mounted relay device, wherein the plurality of rail base relay devices are laid along the high-speed railway rails, are arranged within a rail construction limit and are used for realizing signal relay between the external communication network and the vehicle-mounted relay device; each rail base relay device has a coverage space; the at least one vehicle-mounted relay device is fixed on the carrier and realizes signal relay between a rail base relay device corresponding to the current coverage space and the carrier internal communication network; and the frequency range of the signal is limited in one or more sub-frequency ranges from 4 to 42 GHz. Because microwave frequency ranges are adopted for signal relay of internal and external networks, the microwave communication network has the advantages of stable channel and high communication capacity; and because the system is enclosed in the construction limit of the high-speed railway, the network has the advantages of high reliability, high universality, low cost and the like.

Description

【Technical field】 [0001] The invention mainly relates to the broadband communication technology of the high-speed railway, especially the solution for realizing the access and return of the broadband signal on the high-speed train. 【technical background】 [0002] In recent years, with the rapid development of high-speed railway construction and information construction, it is necessary to build a stable broadband communication system between high-speed trains and roads to meet the needs of mobile phones, Internet access, live news broadcasts, and integrated information service systems. need. [0003] The existing communication method of access and backhaul is to use TD-LTE technology in the mobile communication frequency band, and adopt the method of building a tower base station along the railway line to realize the service transmission between the train and the road. But this technology has the following disadvantages: [0004] First of all, this method uses mobile commu...

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Problems solved by technology

[0004] First of all, this method uses mobile communication coverage technology for broadband transmission, and the frequency and bandwidth used are limited to a certain extent. Because the spectrum resources in the mobile communication frequency band are scarce and expensive, it is very difficult to use a large frequency band for data transmission. Uneconomical

[0005] Secondly, to realize the business transmission between trains and roads by building Tabu base stations along the railway line, it is necessary to coordinate resources such as land and electricity along the line. Tunnels and stations still need to coordinate internal resources of the railway department, and there are many uncontrollable factors; due to signal relay Using the mobile communication frequency band, the vehicle-mounted antenna is bulky and difficult to conform to the vehicle body, resulting in certain driving safety hazards

[0006] In addition, due to the need for a large number of other guarantees that are not required by the communication system itself, the construction of a complete communication system requires huge operating costs and high risk of profitability

[0007] Most importantly, since the construction of this system involves complex environmental resources, it is difficult to standardize, generalize and promote the system

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