Remote radio frequency system

Abstract

The invention provides a remote radio frequency system capable of detecting network interference conditions in the vicinity of a base station. The system comprises a base band unit, a downlink data link and an uplink data link, and is characterized by further comprising a snooping feedback link, wherein the snooping feedback link comprises a snooping receiving antenna, a snooping filter, a snooping low-noise amplifier and a snooping analogue-to-digital converter which are sequentially connected; the snooping receiving antenna receives a radio frequency signal; the snooping filter filters the radio frequency signal according to a preset snooping frequency band range, and outputs a snooping signal; and the snooping low-noise amplifier performs signal amplification processing on the snooping signal, the snooping analogue-to-digital converter performs sampling down-conversion and analogue-to-digital conversion processing on the amplified snooping signal, and the converted snooping signal is output to the base band unit for base band signal processing. The remote radio frequency system provided by the invention can automatically monitor the conditions of a cell and a wireless communication network environment in the vicinity of the cell at the same time of transmitting and receiving a normal network signal.

Description

technical field [0001] The present invention relates to the technical field of remote radio, in particular to a remote radio system. Background technique [0002] In the existing cell base station design, RRU (Remote RF Unit, remote radio unit) has become the mainstream design, and the cell base station solution matching the BBU ((Base Band Unit, baseband processing unit) and RRU has been widely used. Usually The distributed base station is composed of two parts, BBU and RRU, which are connected by optical fiber. The interface protocol is based on standard protocols such as CPRI and IR, and can be stably connected with equipment of mainstream equipment manufacturers. BBU can be installed in a suitable computer room location, RRU is installed at the antenna end, so that part of the previous base station module can be separated, and the complex management, monitoring, and maintenance work can be simplified to the BBU end through the separation of BBU and RRU. RRU generally use...

AI Technical Summary

Problems solved by technology

[0003] In the initial stage of community base station network construction, in order to ensure that the newly added community base stations will not affect other community base stations that are already working normally, and to achieve effective network planning, engineering and technical personnel need to simulate the communication network environment near the community, and the results obtained through the simulation Set the channel frequency, transmit power and other parameters of the base station of the newly added cell, but because there is a certain gap between the simulation results and the actual communication network environment, the setting of the initial value of the fixed base station is quite difficult

[0004] Moreover, in the later operation of the base station, due to abnormal communication network conditions and some other operational problems, the channel frequency of this cell may overlap with that of adjacent cells, and the interference of adjacent cells to this cell may be too large.

The existing technology is to re-simulate the communication network environment around the cell, and engineers and technicians use the parameters obtained by re-simulation to re-plan, configure and optimize the channel frequency and transmission power of the cell or even adjacent cells. However, the simulation process There will also be problems with the actual communication network environment, and the simulation results often do not match the actual interference environment, which is not conducive to the normal operation of the base station

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