Method for multiplexing link communicating between base band and radio frequency with optical transmission network

Abstract

The invention discloses a process of the multi-plexing of a baseband, a radio frequency communication link and an optical transmission network, which chooses the optic fiber with idle wave length in the optical transmission network, and respectively marks the idle wave length and the used wave length in the fiber wave. The process comprises transforming the signals between a baseband unit and a far-end radio frequency unit or between the far-end radio frequency unit and the far-end radio frequency unit into optical signals, conducting the wave length multi-plexing and or de-multi-plexing for the wave length which is used by the optical signals and the wave length which has used in the optic fiber with idle wave length in the optical transmission network, loading the data on the wave length which is used by the optical signals, and conducting the data transmission through the optic fiber with idle wave length. The invention conducts the wave length multi-plexing among the transmission links between the baseband unit and the far-end radio frequency unit and the current physic layer of the optical transmission network through utilizing the optic fiber with idle wave length in the optical transmission network and optical multi-plexing components, thereby realizing the data transmission under the condition of no increasing the optic fiber physic link.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method for multiplexing a baseband and radio frequency communication link with an optical transmission network. Background technique [0002] In recent years, the architecture development of wireless communication systems has gradually evolved into such a trend: distributed base station system. The so-called distributed base station system is to separate the BBU (Base Band Unit, baseband unit) and RRU (Remote Radio Unit, remote radio unit) of the base station, and connect the BBU and multiple RRUs through transmission means (mainly optical fiber) , the RRU unit can be placed together with the BBU, or it can be placed away from the BBU. This architecture improves the flexibility of networking on the one hand, and reduces the maintenance cost of the network on the other hand. Therefore, this architecture is more and more recognized by users, and there are more and more ap...

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Problems solved by technology

[0005] In view of the above analysis, the present invention aims to provide a method for multiplexing baseband and radio frequency communication links and optical transport network, in order to solve the problem of using separate physical optical fiber links between BBU and RRU existing in the prior art

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