Optical label switching structure supporting blocking mode and multiplexing control

Abstract

This invention relates to a mode of supporting block and an optical mark exchange structure controlled by multi-path multiplex. A computer end is connected with the exchange marginal nodes of optical mark, which are connected with the exchange core nodes, an electronic input / output wire card is connected into an optical packet bundle and de-packet processor, which is connected with light mark head generation module and a WDM device, in the core nodes, the input of WDM device connects the fibers arriving at the core nodes with the input of a light mark T-R processor and a light switch exchange matrix, the output of the processor and the matrix are connected with the output of the WDM device.

Description

technical field [0001] The invention relates to a network structure used in the technical field of optical communication, in particular to an optical label switching structure supporting blocking mode and multiplexing control. Background technique [0002] Optical switching can be divided into two modes: circuit switching and optical packet switching of wavelength routing. The optical switching mode of the former is circuit switching, the basic switching unit is a call, and the bandwidth of the entire call is reserved in both directions. The main defect of this switching method is that the wavelength routing channel must be established before data transmission, and the channel wavelength is always occupied and released until it is completed. A more ideal optical switching method is of course optical packet switching. It divides the optical information into optical load groups with a fixed length, and then adds optical headers carrying routing information to form optical in...

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Problems solved by technology

The main defect of this switching method is that the wavelength routing channel must be established before data transmission, and the channel wavelength is always occupied and released until it is completed

[0003] Through literature retrieval to prior art, it is found that "Realization of Multi-wavelength Label" published by Shilin Xiao et al. in "IEEE Photonics Technology Letters" (Institute of Electrical and Electronics Engineers Photon Technology Letters) 2003, 15(4): 605-607 "Optical Packet Switching" (realization of multi-wavelength label optical packet switching), mentioned in this article is only the simplest optical label switching system, which cannot perform real-time terminal control on optical packets, cannot distinguish priority service classes at edge nodes, and cannot Completing the packaging and unpacking of optical packets and the addition of optical marking headers for arbitrary data streams, as well as complex functions such as programmable optical marking and optical packet time and optical packet interval delay, which severely limits the intelligence and flexibility of optical label switching, and even affects The real-time nature of the entire optical label switching system leads to the paralysis of the optical label switching network

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