Method for realizing separate service in light burst exchange network

A technology for optical burst switching and distinguishing services, which is applied in the field of realizing the connection establishment mechanism of the DSH signaling protocol in the optical burst switching network. Reduce equipment costs and create simple effects

Active Publication Date: 2007-10-10
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP +1
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Problems solved by technology

Although JET wavelength scheduling is simple to implement, easy to control nodes, has high wavelength channel utilization, and DB end-to-end delay is small, it is suitable for burst services that are not sensitive to DB loss, and can provide simple differentiated services , but it cannot solve the problem of high DB loss rate caused by DB competition
So JET is not suitable for circuit emulation real-time business with constant bit rate

Method used

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  • Method for realizing separate service in light burst exchange network
  • Method for realizing separate service in light burst exchange network
  • Method for realizing separate service in light burst exchange network

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Embodiment Construction

[0040] With reference to Fig. 2 to Fig. 7, the present invention comprises steps as follows:

[0041] ① When the business arrives at the input edge node, the business classifier will filter various services, and the circuit simulation real-time business and non-real-time burst data business will be sent to the corresponding data burst assembler respectively, and they will be assembled according to different assembly strategies Assemble into DB and send it into the buffer to wait for queuing processing and scheduling output.

[0042] The service classification of the embodiment of the present invention is shown in FIG. 2 . FIG. 2 is a schematic diagram of the internal structure of an edge node applicable to DSH signaling in the present invention. The various services input by the edge nodes are firstly screened by the service classifier. Circuit simulation real-time services and non-real-time data services are sent to the corresponding DB assembler respectively, and they are a...

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Abstract

The method is used for establishing connection under DSH signaling protocol in fiber communication field. It comprises: for circuit simulation real-time service, according to user's upper layer calling request, the DSN signaling completes the time slot allocation for wavelength channel in core node, and establishes the end to end virtual path in OBS network; said virtual path keeps connection during the calling. The wavelength channel is divided into multi time slot units which are respectively and periodically occupied by each call; multi calls share one wavelength channel by using time division multiplexing (TDM). The core node uses time-slot asynchronous mechanism without needing the complex optical synchronous device.

Description

technical field [0001] The invention relates to a method for realizing differentiated services in an Optical Burst Switching network in the field of communication systems or optical fiber communications, and is particularly suitable for realizing a DSH (Differential Service Hybrid, Differentiated Service Hybrid) in an Optical Burst Switching (OBS, Optical Burst Switching) network. The connection establishment mechanism of the service mixing) signaling protocol mainly solves the exchange control and transmission technology for realizing the circuit emulation real-time service efficiently in the OBS network. Background technique [0002] The rapid development of the Internet has led to the explosive growth of data services in the network, so higher requirements are placed on the switching and transmission of high-speed broadband networks. With the development and maturity of wavelength division multiplexing (WDM) technology, hundreds of wavelength channels can be accommodated ...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04Q11/00H04B10/20H04J3/16H04L47/722
Inventor 郭彦涛刘增基文爱军张志卿
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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