Method and system for quickly updating ranging result of optical network unit through optical line terminal

An optical line terminal and optical network unit technology, applied in the field of communications, can solve problems such as excessive message volume, inability to reflect the protection effect of protection switching, and inability to effectively implement protection switching, so as to simplify the message sending process, realize protection switching, The effect of saving message volume
CN101990132AInactive Publication Date: 2011-03-23ZTE CORP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ZTE CORP
Publication Date
2011-03-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for quickly updating a ranging result of an optical network unit through an optical line terminal. The method comprises the following steps that: the optical line terminal (OLT) transmits the acquired ranging difference to all optical network units (ONU); and the current ONU quickly updates the ranging result thereof according to the acquired ranging difference. The invention also discloses a system for quickly updating the ranging result of the optical network unit through the optical line terminal. In the system, a transmitting unit is used for transmitting the acquired ranging difference to all ONUs through the OLT; and an updating unit is used for quickly updating the ranging result of the current ONU according to the acquired ranging difference through the current ONU. The method and the system save the information quantity, and can realize quick switching in a protected state so as to effectively realize protected reversing.
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Description

technical field

[0001] The present invention relates to the field of communications, in particular to a method for quickly updating the distance measurement results of an Optical Network Unit (ONU) by an Optical Line Terminal (OLT, Optical Line Terminal) in a protected state in a Passive Optical Network (PON, Passive Optical Network) system methods and systems. Background technique

[0002] With the development of broadband access technology, operators are gradually accepting and deploying an optical access network (OAN, Optical Access Network) to provide users with faster speed and higher quality services. PON is a point-to-multipoint fiber access technology. Such as figure 1 As shown, the PON is composed of an OLT, an ONU, and an optical distribution network (ODN, Optical Distribution Network) where an optical splitter is located, and one OLT is connected to multiple ONUs through the ODN at the same time. Among them, the ONU can be various forms of terminals, including:...

Claims

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