Invention Publication
EP2249499A1 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
审中-公开
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
- Patent Title: 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
- Patent Title (中): 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
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Application No.: EP09305396.5Application Date: 2009-05-04
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Publication No.: EP2249499A1Publication Date: 2010-11-10
- Inventor: Lavilloniere, Eric , Weppe, Olivier
- Applicant: Mitsubishi Electric R&D Centre Europe B.V. , Mitsubishi Electric Corporation
- Applicant Address: Capronilaan 46 1119 NS Schiphol Rijk NL
- Assignee: Mitsubishi Electric R&D Centre Europe B.V.,Mitsubishi Electric Corporation
- Current Assignee: Mitsubishi Electric R&D Centre Europe B.V.,Mitsubishi Electric Corporation
- Current Assignee Address: Capronilaan 46 1119 NS Schiphol Rijk NL
- Agency: Jacobson, Claude
- Main IPC: H04J14/02
- IPC: H04J14/02 ; H04J3/06 ; H04J3/12 ; H04J3/14
Abstract:
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).
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).
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