Method for supporting real-time service in optical burst exchange

A technology for optical burst switching and real-time services, applied in the direction of data switching networks, digital transmission systems, electrical components, etc., can solve the problem that resource allocation and data transmission cannot be guaranteed, and the JET mechanism cannot well support real-time services and real-time service transmission Large impact and other issues, to achieve the effect of perfect expansion mechanism

Inactive Publication Date: 2005-06-08
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Abstract
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Problems solved by technology

[0019] As can be seen from the above description, since the existing JET mechanism adopts a one-way reservation method, it cannot guarantee reliable resource allocation and data transmission, so there is a possibility of loss in the network, and this possibility of loss

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  • Method for supporting real-time service in optical burst exchange
  • Method for supporting real-time service in optical burst exchange
  • Method for supporting real-time service in optical burst exchange

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Embodiment Construction

[0054] The method for supporting real-time services proposed by the invention can be used in different optical switching structures. An embodiment of the present invention is given below with the optical switching structure shown in FIG. 7 .

[0055] It can be seen from Fig. 7 that the structure of the OBS core node mainly includes an optical cross-connect matrix, a wavelength converter and an optical delay line. In this system structure, there are 4 input optical fibers, and each input optical fiber has 9 wavelengths, which are used to carry burst data of 8 channels of services and a BHP channel. There are also 4 output optical fibers, so the system supports 4 groups of 32 channels of burst data exchange. In Fig. 7, only 8 data wavelength channels are given for each channel, and they are connected to 8 wavelength converters through a wave splitter when they reach the optical switching structure; the output of the wavelength changer is connected through 8 independent controll...

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Abstract

This invention discloses a method supporting the real-time operation in the luminous burst exchange, in the control scheme of the core node; allow two kinds of resource bespoke manners, as to the non real-time operation, still adopt the order manner of the present JET mechanism, that is to estimating establishment and estimating releasing manners. As to the real-time operation, adopt the extending manner of the JET mechanism, similar to the establishment and the releasing of displaying, adopt the estimating establishment to improve the efficiency of the luminous circuit, but send the information of display when releasing.

Description

technical field [0001] The invention belongs to the technical field of switching control in communication systems, in particular to the switching control technology of an optical burst switching system. Background technique [0002] With the scale of the Internet and the exponential growth of Internet services, people's demand for network bandwidth is also increasing sharply, so the requirements for the processing capabilities of routers and switches are also increasing. Due to the electrical processing bottleneck in traditional electrical switching, the most fundamental way to overcome the bottleneck of electrical switching is to use all-optical packet switching technology, but there are still some difficulties in this technology, such as all-optical storage, optical timing / synchronization, etc. Therefore, it is an effective way to realize a large-capacity switching system by fully combining and utilizing the advantages of existing optical and electrical technologies to con...

Claims

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Application Information

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IPC IPC(8): H04L12/841
Inventor 王晟许都虞红芳谭伟
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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