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    • 7. 发明公开
    • Method for protecting a type b passive optical network (pon) and preparing an access control take over by a protection optical line termination (olt) with fast ranging
    • 一种用于通过一个保护光线路终端与快速测距保护类型B的无源光网络以及制备的访问控制方法,接管
    • EP2249499A1
    • 2010-11-10
    • EP09305396.5
    • 2009-05-04
    • Mitsubishi Electric R&D Centre Europe B.V.Mitsubishi Electric Corporation
    • Lavilloniere, EricWeppe, Olivier
    • H04J14/02H04J3/06H04J3/12H04J3/14
    • H04J14/0297H04J3/0652H04J3/0682H04J14/0226H04J14/0227H04J14/0267H04J14/0282H04Q11/0067H04Q2011/0081
    • The method for protecting a type B Passive Optical Network (PON) comprises preparation step for preparing an access control by a protection Optical Line Termination (OLT).
      The preparation step comprises the steps of:
      sending a ranging enabling message defining a ranging gap by a gap delay and a gap duration, the gap delay being the time to wait upon reception of the signalling ranging enabling message to range one single predetermined Optical Network Unit (ONU1) by the protection Optical Line Termination (OLT1),
      sending from the currently working Optical Line Termination (OLT0) to the protection Optical Line Termination (OLT1) signalling messages containing the ranging information of each Optical Network Unit (8,10,12) relative to the currently working Optical Line Termination (OLT0),
      ranging the predetermined Optical Network Unit (ONU1) by the protection Optical Line Termination (OLT1) during the ranging gap while keeping the currently working Optical Network Unit (OLT0) and the remaining Optical Network Units (ONU0, ONU2) silent,
      determining the ranging information of each Optical Network Unit relative to the protection Optical Network Unit (OLT1) from the ranging information of each Optical Network Unit relative to the currently working Optical Termination (OLT0) and the ranging information of the single predetermined Optical Network Unit (ONU1) relative to the protection Optical Line Termination (OLT1).
    • 用于保护B型无源光网络(PON)的方法,包括:用保护光线路终端(OLT)的访问控制的准备的准备步骤。 制备步骤包括以下步骤:发送测距启用消息限定由间隙延迟测距间隙和间隙的持续时间,该间隙延迟是所述时间在所述信令测距启用消息给范围内的一个单一的预定的光网络单元的接收等待 (ONU 1)由保护光线路终端(OLT 1​​)中,从目前工作光线路终端(OLT0)到保护光线路终端(OLT 1​​)信令包含每个光网络单元的测距信息消息发送(8,10,12 )相对于当前工作光线路终端(OLT0),测距间隙期间由保护光线路终端(OLT 1​​)为预定的光网络单元(ONU 1),同时保持当前工作光网络单元(OLT0)和剩余光 网络单元(ONU0,ONU2)无声的,确定性的采矿每个光网络单元相对于从所述保护光网络单元(OLT 1​​)的测距信息 每个光网络单元相对于目前的工作光学终端(OLT0)和单一预定的光学网络单元(ONU 1)相对于所述保护光线路终端(OLT 1​​)的测距信息的测距信息。