Frame synchronization for data transmission over an optical network

    公开(公告)号:US09647782B2

    公开(公告)日:2017-05-09

    申请号:US14576994

    申请日:2014-12-19

    CPC classification number: H04J3/0602 H04J3/1652

    Abstract: We disclose an interface device configured to inter-convert CPRI data frames and Optical Transport Units (OTUs). The interface device acquires frame synchronization by temporarily storing data in a buffer bank such that translated sync characters are placed at respective predetermined locations within the buffer bank. Each translated sync character represents, in the corresponding OTU, a respective sync character of a CPRI hyperframe. The interface device is configured to distinguish translated sync characters from payload-data words of identical value based on predetermined alignment, in the buffer bank, of data temporarily stored therein for conversion into the CPRI data format. The interface device advantageously enables multiplexing of a plurality of CPRI links and aggregation and encapsulation of the multiplexed CPRI data into a stream of OTUs for transmission to the intended destination over an Optical Transport Network.

    FRAME SYNCHRONIZATION FOR DATA TRANSMISSION OVER AN OPTICAL NETWORK
    2.
    发明申请
    FRAME SYNCHRONIZATION FOR DATA TRANSMISSION OVER AN OPTICAL NETWORK 有权
    用于在光网络上进行数据传输的帧同步

    公开(公告)号:US20160182218A1

    公开(公告)日:2016-06-23

    申请号:US14576994

    申请日:2014-12-19

    CPC classification number: H04J3/0602 H04J3/1652

    Abstract: We disclose an interface device configured to inter-convert CPRI data frames and Optical Transport Units (OTUs). The interface device acquires frame synchronization by temporarily storing data in a buffer bank such that translated sync characters are placed at respective predetermined locations within the buffer bank. Each translated sync character represents, in the corresponding OTU, a respective sync character of a CPRI hyperframe. The interface device is configured to distinguish translated sync characters from payload-data words of identical value based on predetermined alignment, in the buffer bank, of data temporarily stored therein for conversion into the CPRI data format. The interface device advantageously enables multiplexing of a plurality of CPRI links and aggregation and encapsulation of the multiplexed CPRI data into a stream of OTUs for transmission to the intended destination over an Optical Transport Network.

    Abstract translation: 我们公开了配置为对CPRI数据帧和光传输单元(OTU)进行互相转换的接口设备。 接口装置通过将数据临时存储在缓冲器组中来获得帧同步,使得翻译的同步字符被放置在缓冲器组内的相应的预定位置处。 每个转换的同步字符在对应的OTU中表示CPRI超帧的相应同步字符。 接口设备被配置为基于暂时存储在其中的数据的缓冲器组中的预定对准来区分翻译的同步字符与相同值的有效载荷数据字,以转换成CPRI数据格式。 接口设备有利地实现多个CPRI链路的多路复用,并将复用的CPRI数据的聚合和封装转换成OTU流,以便通过光传输网络传输到预定的目的地。

    METHODS AND DEVICE FOR PROCESSING DIGITAL DATA FRAMES AND TRANSPORT FRAMES FOR REDUCTION OF TRANSPORT BANDWIDTH
    3.
    发明申请
    METHODS AND DEVICE FOR PROCESSING DIGITAL DATA FRAMES AND TRANSPORT FRAMES FOR REDUCTION OF TRANSPORT BANDWIDTH 有权
    用于处理数据数据框架和运输框架以减少运输带宽的方法和设备

    公开(公告)号:US20150207740A1

    公开(公告)日:2015-07-23

    申请号:US14413808

    申请日:2013-06-07

    Applicant: ALCATEL LUCENT

    CPC classification number: H04L47/12 H04B10/27 H04J3/1652 H04L69/04

    Abstract: A device (D1) is intended for processing digital data frames to be transmitted by a transport network (TN), and comprises i) a first processing means (PM1) comprising ports for receiving digital data frames and arranged for downsizing, then compressing, if necessary, and then compacting each one of these received digital data frames to produce reduced digital data frames, ii) a second processing means (PM2) arranged for aggregating at least some of these reduced digital data frames together according to aggregation information to produce frame groups, and iii) a third processing means (PM3) arranged for grouping these frame groups together with a group descriptor, defining initial arrangements of the digital data frames, according to grouping information, to produce a transport frame to be transmitted by the transport network (TN).

    Abstract translation: 设备(D1)旨在处理要由传输网络(TN)发送的数字数据帧,并且包括:i)第一处理装置(PM1),包括用于接收数字数据帧的端口,并且被布置成用于小型化,然后压缩,如果 必要的,然后压缩这些接收的数字数据帧中的每一个以产生减少的数字数据帧; ii)第二处理装置(PM2),其被布置为根据聚合信息将这些缩小的数字数据帧中的至少一些聚合在一起以产生帧组 以及iii)第三处理装置(PM3),其被布置为根据分组信息将这些帧组与组描述符分组,定义数字数据帧的初始布置,以产生要由传输网络发送的传输帧( TN)。

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