Multi-site co-cell network building method, base band unit and radio remote unit and system

Abstract

The embodiment of the invention provides a multi-site co-cell network building method, a base band unit and a radio remote unit and system. The multi-site co-cell network building method comprises the steps of: connecting at least one of one or more radio remote unit (RRU) in a base station of a cell to at least two base stations, wherein the at least two base stations comprise the base station of the cell and at least one other base station; and continuing communication by using the at least one other base station when the communication between one of the one or more RRU and the base station of the cell is failed.

Description

technical field [0001] Embodiments of the present invention relate to the field of wireless communication, and more specifically, relate to a method for networking of a multi-site shared cell (Multi-site Cell), a base band unit (Base Band Unit, BBU), a remote radio unit ( Remote RF Unit, RRU) and its system. Background technique [0002] With the development of social economy, mobile communication has penetrated into every corner of daily work and life. People are more and more dependent on mobile communication, and the requirements for communication quality are getting higher and higher. At present, the rapid development of high-speed railways has brought great challenges to the wireless coverage along the existing railways, resulting in a significant decrease in the network KPI (Key Performance Indication, Key Performance Indicators) indicators in the trains, which has attracted widespread attention from mobile operators. For this reason, an RRU multi-site shared cell is ...

AI Technical Summary

Problems solved by technology

[0004] However, in the case of a chain network, if a certain section of optical fiber in the chain network fails, it will cause the RRU behind the chain to fail to work normally (some examples of annual failure rate: optical fiber (500m) 85%, RRU failure rate 2%, BBU failure rate 1%), resulting in low reliability

[0005] An existing solution is to form a ring network, but the formation of the ring network requires the laying of two optical fibers from the RRU to the BBU in the east and west directions. In order to meet the requirements of reliability, the backup optical fiber of the ring network must be laid independently, which leads to engineering Volume and cost are multiplied, and along some actual railway lines, it is not even possible to find a backup fiber optic loop

[0006] In addition, if the BBU fails, the entire system will be paralyzed and services cannot be provided

In order to solve this single point of failure, an additional backup BBU must be added in the base station, resulting in an increase in cost

And due to the introduction of a new BBU lead to complex data configuration

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