Equipment structure and operating method for control processing unit in optical network

Abstract

The present invention discloses the method and equipment for controlling data burst selection route in WDM photon burst exchange network. In one embodiment, only control burst and network management label perform photo-electronic-photo conversion inside photon burst switching (PBS) module. The controlling and processing unit inside PBS module may include I / O buffer, control burst analyzer, burst despatcher, PBS configuration and control block, contention solving block, transmission engine, network management controller, control burst creater and queue manager. The contention solving block is used in solving resource contention among data bursts through the following modes: adding additional delay to one of the data bursts, changing one of the data bursts to a substitution wavelength, or discarding some data bursts according to various criterions of, say, relative priority and wavelength.

Description

technical field [0001] The present disclosure relates generally to optical network systems, and more particularly to optical network systems operating in a photonic burst switching mode. Background technique [0002] The demand for transmission bandwidth of telecommunication networks (for example, the Internet) is constantly increasing, and thus it is necessary to find a solution to support this bandwidth demand. One solution to this problem is to use fiber optic networks in which wavelength division multiplexing (WDM) technology is used to support the growing demand for higher data rates in optical networks. [0003] Conventional optical switching networks typically use wavelength routing techniques that require optical-to-electrical-to-optical (OEO) conversion of optical signals on optical switches. The OEO switching on each switching node in the optical network not only operates very slowly (usually about 10 milliseconds), but also costs a lot, and is likely to create a ...

AI Technical Summary

Problems solved by technology

The OEO conversion on each switching node in the optical network is not only very slow (usually about 10 milliseconds), but also very expensive, and it is likely to create a traffic bottleneck in the optical switching network

Furthermore, current optical switching technologies are unlikely to efficiently support the "bursty" traffic often experienced in packet communication applications such as the Internet

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