MODIFIED ARCHITECTURE FOR CLOUD RADIO ACCESS NETWORKS AND APPROACH FOR COMPRESSION OF FRONT-HAUL DATA
    26.
    发明公开
    MODIFIED ARCHITECTURE FOR CLOUD RADIO ACCESS NETWORKS AND APPROACH FOR COMPRESSION OF FRONT-HAUL DATA 审中-公开
    云无线接入网络的改进架构及压缩前端数据的方法

    公开(公告)号:EP3192324A1

    公开(公告)日:2017-07-19

    申请号:EP15736888.7

    申请日:2015-06-30

    Abstract: Systems and methods disclosed herein describe a centralized-processing cloud-based RAN (C-RAN or cloud-RAN) architecture that offers reduced front-haul data-rate requirements compared to common-public-radio-interface (CPRI) based C-RAN architectures. Base-band physical-layer processing can be divided between a BBU Pool and an enhanced RRH (eRRH). A frequency-domain compression approach that exploits LTE signal redundancy and user scheduling information can be used at the eRRH to significantly reduce front-haul data-rate requirements. Uniform scalar quantization and variable-rate Huffman coding in the frequency-domain can be applied in a compression approach based on the user scheduling information wherein a lossy compression is followed by a lossless compression.

    Abstract translation: 本文公开的系统和方法描述了与基于公共无线电接口(CPRI)的C-RAN相比提供减少的正向数据速率需求的集中式处理基于云的RAN(C-RAN或云-RAN)架构 架构。 基带物理层处理可以分为BBU池和增强型RRH(eRRH)。 可以在eRRH上使用利用LTE信号冗余和用户调度信息的频域压缩方法来显着降低前传数据速率要求。 频域中的均匀标量量化和可变速率霍夫曼编码可基于用户调度信息应用​​在压缩方法中,其中有损压缩之后是无损压缩。

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