Improved distribution-type base station architecture and realization method

Abstract

The invention relates to an improved distribution-type base station architecture and a realization method. Device of the improved distribution-type base station architecture consists of BBU and RRU, wherein connection of BBU is: a laser is connected with a serial / parallel transformation module, an optical interface protocol framing and deframing module is respectively connected with the serial / parallel transformation module, a baseband data link layer processing module and an operation maintenance module, the baseband data link layer processing module is connected with an upper layer interface module, and the upper layer interface module is connected with an upper layer; and the connection of RRU is: a laser is connected with a serial / parallel transformation module, an optical interface protocol framing and deframing module is respectively connected with the serial / parallel transformation module, a baseband data physical layer processing module and an operation maintenance module, the baseband data physical layer processing module is connected with a middle-frequency processing module, the middle-frequency processing module is connected with a radio-frequency processing module, and the radio-frequency processing module is connected with an antenna; and the laser of the BBU is connected with the RRU laser. The optical transmission bandwidth is small, the cost is low, the stability is high, and the system upgrading can be realized.

Description

technical field [0001] The invention relates to an improved distributed base station architecture and a realization method. Background technique [0002] The so-called distributed base station refers to a base station mode in which the digital baseband processing part and the radio frequency part of the base station are placed separately as independent modules and connected through optical fibers. It is precisely because the distributed base station is different from the traditional macro base station that all modules are concentrated in the same cabinet, so that it has the advantages of saving room space, improving coverage capabilities and facilitating engineering implementation that traditional macro base stations do not have in mobile communication networking and construction. and other advantages. [0003] In traditional distributed base stations, the digital baseband processing part, the baseband unit (BBU), is mainly used to complete baseband processing functions, su...

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Problems solved by technology

For example, in TD-LTE eight-channel products, a single sector of the base station is required to support two 20MHz carriers, so the optical interface rate between the BBU and the RRU will be as high as 20Gbps, and the use of the existing base station architecture will bring design difficulties and costs. a lot of pressure

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