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System and method for establishing switched connection in automatic switched optical network (ASON)

A switching connection and automatic switching technology, which is applied in the direction of selection devices, electrical components, selection devices, etc. capacity, efficiency

Inactive Publication Date: 2013-01-16
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] At present, the industry does not have a definite method for the protection and recovery of switched connections

Method used

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  • System and method for establishing switched connection in automatic switched optical network (ASON)
  • System and method for establishing switched connection in automatic switched optical network (ASON)
  • System and method for establishing switched connection in automatic switched optical network (ASON)

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Embodiment Construction

[0048] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand and implement the process of how to apply technical means to solve technical problems and achieve technical effects in the present invention.

[0049] Considering that only the first and last nodes of the switching connection are in the user network, and the other parts are all inside the service network, the probability of connection failure occurring in the internal part of the service network is relatively high. If protection and recovery measures can be taken for the internal part of the service network of the exchange connection, the failure resistance capability of the exchange connection service can be greatly improved.

[0050] figure 1 is a schematic flow diagram of a method embodiment of the present invention. Such as figure 1 As shown, the method embodiment mainly includes the following steps:

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Abstract

A method for establishing a switch connection in an Automatically Switched Optical Network (ASON) is provided, wherein the method includes that: a source User Network Interface-Network (UNI-N) of a service network receives a service establishment request message sent by a user network, and starts a service establishment of a service layer; said source UNI-N applies for a virtual interface of the service layer service; said source UNI-N queries a routing according to routing constraint conditions in said service establishment request message, and establishes the service layer service in said service network; said source UNI-N applies for an upstream slot label of a client layer service, and sets a cross to a corresponding downstream slot label of the service layer service from said upstream slot label of the client layer service; said destination UNI-N applies for a downstream slot label of the client layer service, and sets a cross to the corresponding downstream slot label of the client layer service from said upstream slot label of the service layer service; said destination User Network Interface-Customer (UNI-C) returns a client layer Reservation (Resv) signaling, and completes the establishment of the switch connection. The present invention ensures the relative independence of the operation between the client layer service and the service layer service.

Description

technical field [0001] The invention relates to an Automatic Switched Optical Network (ASON), in particular to a system and method for establishing a switched connection in the ASON. Background technique [0002] The Automatic Switched Optical Network (ASON) is developed based on the traditional optical transport network. Without the need for human management and control, ASON can be configured according to a series of protocol mechanisms such as routing, signaling and automatic discovery. According to the user's request, an optical channel that meets the user's needs is established. This revolutionary progress has brought a qualitative leap in the development of optical networks, and has also promoted the development of various new services and applications. [0003] A switched connection (Switched Connection, SC) is a connection established at the request of an end user, and is also called a signaling connection. This connection is established by the communication termin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q11/00H04B10/03
CPCH04Q11/0062H04Q2011/0088
Inventor 李士雷
Owner ZTE CORP
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