BBU forward data processing method and system

A technology for forwarding data and processing methods, applied in the field of 5G communication, can solve problems such as difficult BBU time synchronization, achieve the effect of solving system time synchronization problems, reducing development workload, and ensuring real-time performance

Active Publication Date: 2020-05-05
GUANGDONG MECHANICAL & ELECTRICAL COLLEGE
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  • Abstract
  • Description
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Problems solved by technology

In addition, the time synchronization between the BBU and the fronthaul subsystem is also a big problem

Method used

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  • BBU forward data processing method and system
  • BBU forward data processing method and system
  • BBU forward data processing method and system

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Embodiment Construction

[0028] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and embodiments, but the embodiments of the present invention are not limited thereto.

[0029] The present invention realizes a processing method of pre-transmission data. The multi-core CPU unit and the FPGA unit involved are connected through a high-speed PCIE interface, and air interface data, Ethernet messages and timing messages are interacted between them. When the multi-core CPU is initialized, the air interface IQ data memory, Ethernet message memory, and DMA descriptor queue memory are pre-allocated, and the allocated DMA descriptor queue memory address is notified to the FPGA unit through the PCIE BAR space, and the DMA descriptor queue is used for the CPU The unit transmits the DMA descriptor to the FPGA unit, and the FPGA unit performs DMA processing according to the requirements of the DMA descriptor. At the same time, when the mult...

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Abstract

The invention relates to a 5G communication technology, in particular to a method and a system for processing forward data of a BBU. According to the processing method, a wireless high-level protocolstack function and a physical layer function are realized through the multi-core CPU unit; the CPRI protocol is processed through the FPGA unit; the multi-core CPU unit and the FPGA unit are connectedthrough a high-speed PCIE interface. During downlink transmission, the multi-core CPU unit sends a wireless high-level protocol stack message, physical layer IQ data and PRACH data to the FPGA for processing; during uplink transmission, the FPGA unit analyzes the CPRI protocol data and forwards the data to the multi-core CPU unit for processing. According to the invention, the processing capability of 5G forward data is improved, and the bandwidth of a 5G system is further improved.

Description

technical field [0001] The present invention relates to 5G communication technology, and in particular to a method and system for processing BBU forward data in 5G room distribution equipment. Background technique [0002] In the 5G network, the BBU function is further divided into CU (Central Unit) and DU (Distributed Unit). The segmentation of CU and DU functions is distinguished by the real-time nature of the processing content. The CU device mainly includes non-real-time wireless high-layer protocol stack functions, and also supports the deployment of some core network functions and edge application services. The DU device mainly handles physical layer functions and layer 2 functions required by real-time performance. Consider saving the transmission resources between AAU and DU, and some physical layer functions can also be moved up to AAU for implementation. The overall network architecture of 5G focuses on fronthaul, midhaul, and backhaul. The fronthaul is from DU ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/06H04W56/00
CPCH04W28/06H04W56/00Y02D30/70
Inventor 赵剑川张宇欧启标何威赵静潘必超
Owner GUANGDONG MECHANICAL & ELECTRICAL COLLEGE
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