公开(公告)号：US20140133855A1

公开(公告)日：2014-05-15

申请号：US13674648

申请日：2012-11-12

Applicant: BROADCOM CORPORATION

Inventor： Brian CHAFFINS ,  Eric Lynskey ,  Ryan Hirth ,  Edward Wayne Boyd

IPC: H04B10/27

CPC classification number: H04Q11/0067 ,  H04L12/2861 ,  H04Q2011/0077

Abstract: Embodiments reduce overhead in Ethernet Passive Optical Network (EPON) networks by reducing the amount of switching among Optical Network Units (ONUs) done by the Optical Line Terminal (OLT). In one embodiment, Logical Link Identifiers (LLIDs) hosted by the same ONU are linked at the OLT such that the OLT grants same ONU LLIDs consecutively when appropriate. This reduces the optics related delay associated with switching among ONUS. At the same time, the linking of LLIDs hosted by the same ONU allows for data from multiple LLIDs to be grouped together within a single Forward Error Correction (FEC) block at the ONU, when appropriate, reducing FEC overhead.

Abstract translation: 通过减少由光线路终端（OLT）完成的光网络单元（ONU）之间的切换量，实现减少以太网无源光网络（EPON）网络的开销。 在一个实施例中，由相同ONU托管的逻辑链路标识符（LLID）在OLT处链接，使得OLT在适当时连续授权相同的ONU LLID。 这减少了与ONUS之间切换相关的光学相关延迟。 同时，由相同ONU承载的LLID的链接允许来自多个LLID的数据在ONU的单个前向纠错（FEC）块中被组合在一起，在适当的情况下，减少FEC开销。