Antenna data packet transmission device and method

Abstract

The invention discloses an antenna data packet transmission device and method. The device comprises an IQ antenna data exchange module used for carrying out processing on IQ data flow transmitted between a BBU and an RRU to obtain an IQ processed data flow; an interface module used for carrying out transmission on the IQ data flow and the IQ processed data flow; and a clock module used for processing a reference clock of a clock reference source into a synchronous clock, and distributing the synchronous clock to the BBU. The device can fully utilizes the processing capability of the BBU, expands the number of interfaces on the basis on limited number of interfaces at the RRU side, can connect more RRUs or conventional BBU devices, and meanwhile, can effectively save optical fiber resourcesbetween the BBU and the RRU, thereby reducing fiber cost, fiber layout difficulty and construction cost.

Description

technical field [0001] The present invention relates to the technical field of data transmission, in particular to a device and method for antenna data packetized transmission. Background technique [0002] At present, a wireless distributed base station system is generally composed of a BBU (Base Band Unit, base band unit) and an RRU (Remote Radio Unit, radio frequency remote unit). Among them, BBU is responsible for baseband processing and communication interaction with upper-layer network devices; RRU is responsible for uplink and downlink RF signal processing and UE (User Equipment, user equipment) interaction functions. Currently, BBU and RRU are directly connected by optical fiber, and the interface adopts CPRI (Common Public Radio Interface, common public radio interface), such as figure 1 shown. [0003] With the rapid development of 5G technology, the processing capacity of 5G base stations must reach 1,000 times that of 4G, and the massive MIMO (Multiple-Input Mu...

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Problems solved by technology

[0008] The technical problem solved by the solution provided according to the embodiment of the present invention is that the BBU and the RRU cannot be interconnected due to inconsistent optical port rates, the BBU baseband processing resources cannot be fully utilized, the insufficient number of BBU optical ports leads to a limited number of connected RRUs, and the number of indirect fibers between the BBU and the RRU is large, The problem of high fiber cost and wiring, and the difficulty of accessing clock synchronization reference sources in scenarios such as ultra-long feeder wiring or feeder lines that cannot pass through walls for a long distance

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