公开(公告)号：US20140195878A1

公开(公告)日：2014-07-10

申请号：US14122290

申请日：2012-06-15

Applicant: ALCATEL LUCENT

Inventor： Luca Razzetti ,  Carlo Costantini ,  Marianna Pepe ,  Andreas Leven ,  Stephan Ten Brink ,  Laurent Schmalen

IPC: H04L1/00

CPC classification number: H04L1/0045 ,  H04B10/6165 ,  H04L1/0047 ,  H04L1/005 ,  H04L1/0054 ,  H04L1/0057

Abstract: Proposed is a method of decoding a differentially encoded PSK modulated optical data signal carrying FEC encoded data values. The optical signal is corrected by an estimated phase offset. From the corrected signal, respective likelihood values for the FEC encoded data values are derived, using an estimation algorithm which accounts for a differential encoding rule used for differentially encoding the optical signal. The derived likelihood values are limited to a predetermined range of values. From the limited likelihood values, FEC decoded data values are derived, using an algorithm which accounts for a FEC encoding rule used for FEC encoding the FEC encoded data values.

Abstract translation: 提出了对携带FEC编码数据值的差分编码的PSK调制光数据信号进行解码的方法。 光信号通过估计的相位偏移来校正。 从校正的信号中，使用考虑用于对光信号进行差分编码的差分编码规则的估计算法，导出FEC编码数据值的相应似然值。 导出的似然值被限制在预定的值范围内。 从有限似然值中，使用考虑用于FEC编码FEC编码数据值的FEC编码规则的算法导出FEC解码数据值。

公开(公告)号：US10218464B2

公开(公告)日：2019-02-26

申请号：US15565272

申请日：2016-04-22

Applicant: Alcatel Lucent

Inventor： Fred Buchali ,  Laurent Schmalen ,  Roman Dischler ,  Ulrich Gebhard

IPC: H03D1/24 ,  H04L1/00 ,  H04B10/516

Abstract: Embodiments relate to a method for generating a second data packet for a second network layer from a first data packet including a first header portion with information related to a first network layer higher than the second network layer. The method comprises generating, based on the first header portion, a second header portion including information related to the second network layer and generating a payload portion including the first data packet. The method further comprises generating the second data packet for the second network layer by linking the second header portion and the payload portion.

公开(公告)号：US10727978B2

公开(公告)日：2020-07-28

申请号：US15762306

申请日：2016-10-10

Applicant: Alcatel Lucent

Inventor： Ulrich Gebhard ,  Laurent Schmalen

IPC: H04L1/00 ,  H04L12/715 ,  H04B10/27 ,  H04L12/801 ,  H04Q11/00

Abstract: A technique is provided for providing control messages to one or more nodes included in an optical transmission network. The technique includes receiving, at a node, a container comprising a container header and a container payload portion. The container header comprises information regarding a destination node of the container, and the container payload portion includes one or more data portions comprising information associated with one or more client data packets and a control data portion. The control data portion is associated with one or more control messages and a forward error correction (FEC) information to protect the one or more control messages against transmission errors. The control data portion is decoded taking into account the FEC information. The one or more control messages included in the decoded control data portion are provided at the node.

公开(公告)号：US10193658B2

公开(公告)日：2019-01-29

申请号：US15564893

申请日：2016-04-22

Applicant: Alcatel Lucent

Inventor： Fred Buchali ,  Laurent Schmalen ,  Roman Dischler ,  Lars Dembeck ,  Andreas Leven

IPC: H04L1/00 ,  H04B10/29

Abstract: Embodiments relate to an apparatus for a regenerative network node between a first and a second link portion. The apparatus comprises an input configured to receive, from the first link portion, a signal impaired by the first link portion, the signal including a data packet with a Forward Error Correction (FEC) encoded payload portion and a header portion. The apparatus comprises a signal regeneration unit configured to mitigate signal impairments of the first link portion to provide a regenerated FEC encoded payload portion. The apparatus comprises a processing unit configured to extract destination information in the data packet's header portion. If extracted destination information indicates that the data packet's destination is the regenerative network node, the data packet's regenerated FEC encoded payload portion is forwarded to a decoding unit of the regenerative network node. Else, the data packet's regenerated FEC encoded payload portion is forwarded to the second link portion.