Multi-network fusion optical fiber access system

Abstract

An embodiment of the present invention provides a multi-network fusion optical fiber access system, which is used to realize a multi-network fusion optical fiber system with greater multi-frequency remote coverage unit expansion capability, wider network coverage, and stronger coverage signals. A multi-network fusion optical fiber access system, including a multi-frequency near-end unit and a multi-frequency remote coverage unit, the multi-frequency near-end unit is used to couple the downlink radio frequency signal from the base station, convert it into a downlink optical signal and provide it to multiple The frequency remote coverage unit provides wireless radio frequency signals for the terminal, and receives the uplink optical signal transmitted by the remote device through the optical fiber, and sends it to the base station for communication; the multi-frequency remote coverage unit is used for the downlink provided by the multi-frequency near-end unit The radio frequency signal is converted into a downlink optical signal, providing wireless communication signals for the terminal, and receiving the uplink radio frequency signal from the terminal, converting the uplink radio frequency signal into an uplink optical signal and providing it to the multi-frequency near-end unit through an optical fiber.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a multi-network fusion optical fiber access system. Background technique [0002] With the development of wireless communication networks, multiple standards of 2G and 3G networks require both indoor and outdoor network coverage. [0003] Traditional mobile communication indoor distribution systems generally use coaxial cables for networking, but with the increase of network standards, this type of system shows more limitations in specific implementation, mainly reflected in: system main equipment, cable , a large number of devices and power supply units, and a large volume and weight, resulting in a wide range of network influence, large construction volume, long construction period, and slightly poor operability of emergency sites; construction is easy to cause some damage to buildings, such as wall perforation, Cables are routed inside the ceiling, etc., and the exposed ...

AI Technical Summary

Problems solved by technology

[0005] One multi-frequency near-end unit in the existing optical fiber access system can theoretically expand 16 multi-frequency remote coverage units. The problem of communication congestion and uplink noise is difficult to control. The introduction of low-noise amplifier and optical device noise directly affects the receiving sensitivity of the base station and reduces the coverage of the base station. Therefore, in actual use, only 4 multi-frequency remote coverage can be extended Unit, if the number of extensions increases, the uplink noise floor will be too large, which will cause serious interference to the base station; secondly, the optical signal transmission of traditional equipment mostly adopts 1310nm and 1550nm multiplexing transmission, the device cost is high, and the multiplexing transmission data stability is low; again In the past, the optical units of the optical fiber system mostly used the method of 1 receiving and 1 sending, and the extended remote unit can only use the method of optical splitting and combining. The signal loss is large and the gain loss of each channel is not easy to automatically adjust.

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