Optical fiber relay remote equipment

Abstract

The invention relates to the technical field of communication equipment, in particular to optical fiber relay remote equipment, which comprises an optical fiber relay far-end machine and an optical fiber relay far-end machine, the optical fiber relay far-end machine realizes signal transmission with the optical fiber relay far-end machine through an optical cable; the optical fiber relay pull far-near end machine comprises a first duplexer, a first power amplifier, a second power amplifier, a first monitoring board and a first optical module. The optical fiber relay remote terminal comprises asecond duplexer, a third power amplifier, a low-noise amplifier, a second monitoring board and a second optical module; base station signals are output through the optical fiber relay remote device,then the signals are transmitted out through the retransmission antenna, and meanwhile the retransmission antenna can receive the signals transmitted by the interphone and transmit the signals to thebase station through the optical fiber relay remote device. Compared with a base station, the method has the advantages of low cost and fast construction, and is suitable for large-scale scenes.

Description

technical field [0001] The invention relates to the technical field of communication equipment, in particular to an optical fiber relay remote equipment. Background technique [0002] The longest communication distance of 1W walkie-talkies sold on the market is 5KM, and the communication distance for urban environments is far less than 5KM. For environments such as high-rise buildings and large venues, due to the loss of feeders, power divider couplers and other sub-systems, the RF signal cannot effectively cover every area of ​​the building, resulting in unsatisfactory call quality in some areas inside the building; direct communication between walkie-talkies , limited by the terminal transmit power and receive sensitivity, the communication distance is very limited. Due to the large wall loss of large buildings, it is still difficult for the conventional indoor distribution system to meet the coverage requirements in the case of large area coverage; at the same time, a lar...

AI Technical Summary

Problems solved by technology

For environments such as high-rise buildings and large venues, due to the loss of feeders, power divider couplers and other sub-systems, the RF signal cannot effectively cover every area of ​​the building, resulting in unsatisfactory call quality in some areas inside the building; direct communication between walkie-talkies , limited by the transmission power and receiving sensitivity of the terminal, the communication distance is very limited. Due to the large wall loss of large buildings, it is still difficult for the conventional indoor distribution system to meet the coverage requirements in the case of large area coverage; at the same time, a large number of construction base stations can meet the requirements of public security, fire protection and The property has communication needs for high-rise buildings and large venues, but the investment in building base stations is large and the construction period is long, which is not cost-effective for some application scenarios with small traffic volumes

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