Distributed base station signal transmission system and communication system

摘要

A distributed base station signal transmission system is provided. The system includes a first multiplexing and demultiplexing unit, which is configured to multiplex a downlink signal emitted by the base band unit and output the downlink signal to the remote radio unit, a second multiplexing and demultiplexing unit, which is configured to multiplex an uplink signal emitted by the remote radio unit and output the uplink signal to the base band unit; a first colorless optical module receives and parse the uplink signal and generate the downlink signal; and a second colorless optical module is configured to receive and parse the downlink signal and generate the uplink signal. The present invention requires only one or a pair of fibers to implement interconnection between BBUs and RRUs, and does not need to use a large number of fibers and a metro wavelength division multiplexing network.

主权项

1. A distributed base station signal transmission system, comprising:
a base band unit; a remote radio unit; a first multiplexing and demultiplexing unit, configured to multiplex a downlink signal emitted by the base band unit and output the downlink signal to the remote radio unit, and demultiplex an uplink signal sent by the remote radio unit and output the uplink signal to the base band unit; a second multiplexing and demultiplexing unit, configured to multiplex an uplink signal emitted by the remote radio unit and output the uplink signal to the base band unit, and demultiplex a downlink signal sent by the base band unit and output the downlink signal to the remote radio unit; a first colorless optical module, configured to receive and parse the uplink signal demultiplexed and output by the first multiplexing and demultiplexing unit and output the uplink signal to the base band unit, and generate, under modulation of the base band unit, the downlink signal and output the downlink signal to the first multiplexing and demultiplexing unit; a second colorless optical module, configured to receive and parse the downlink signal demultiplexed and output by the second multiplexing and demultiplexing unit and output the downlink signal to the remote radio unit, and generate, under modulation of the remote radio unit, the uplink signal and output the uplink signal to the second multiplexing and demultiplexing unit; a first broad-spectrum light source, configured to output a broad-spectrum optical signal to the first multiplexing and demultiplexing unit, and provide exciting light for the first colorless optical module, so as to generate the downlink signal; and a second broad-spectrum light source, configured to output a broad-spectrum optical signal to the second multiplexing and demultiplexing unit, and provide exciting light for the second colorless optical module, so as to generate the uplink signal.