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Parallel signaling method for realizing quick optical channel connection in intelligent optical network

An intelligent optical network and fast connection technology, applied in the field of optical communication, can solve problems affecting network transmission efficiency, achieve the effect of eliminating the establishment delay and shortening the establishment time of optical path connections

Inactive Publication Date: 2008-03-26
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

But for the optical cross-connect setup time T c , as the scale of the network topology expands, its impact on the connection delay increases proportionally, which will seriously affect the transmission efficiency of the network

Method used

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  • Parallel signaling method for realizing quick optical channel connection in intelligent optical network
  • Parallel signaling method for realizing quick optical channel connection in intelligent optical network
  • Parallel signaling method for realizing quick optical channel connection in intelligent optical network

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Embodiment Construction

[0041] Aiming at the defects existing in traditional signaling, the present invention designs and adds a new type of message on the basis of traditional RSVP-TE signaling protocol: a resource reservation message (RESV-F) carrying a resource reservation status identifier, and On this basis, a parallel signaling mechanism is proposed and designed to effectively shorten the establishment time of Label Switching Path (LSP, Label Switching Path) connections. By adopting a new type of signaling message carrying resource reservation status identifier, the invention not only retains the excellent blocking rate characteristic of reverse reservation, but also eliminates the influence of optical cross connection time on the entire optical connection establishment time characteristic.

[0042] Referring to the frame structure shown in FIG. 1 , RESV-F is a new type of message notifying the success / failure status of resource reservation. It is designed and implemented with reference to the ...

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Abstract

The invention discloses a parallel signalling method for realzing light channel quick connection in the light passage. In the method, the middle nodes realize following steps in parallel: (1) sending an updated PATH message to the downstream node; (2) assigning the local inlet port wavelength resource, sending the RESV message which carries the resource assigning label; (3) driving the substrate hardware equipment rearrangment, receiving and keeping the local inlet port rearrangment; an aim node packs the state label to the RESV-F message, reversely sendes to the source node; a middle node brings the new resource obligate state, and transmites to the upriver mode through the RESV-F message; the source node returns the result to the user based on the resource obligate state to judge the connection is established whether or not. By using the invention, the cross connection establishing time delay is eliminated basically, the light passage connection establishing time is shortened effectively, the need of the intelligent light network band width provided by the distribution type application is satisfied.

Description

technical field [0001] The present invention relates to a method for realizing a parallel signaling mechanism (PSBR, ParallelSignaling Based on RSVP-TE) in an optical network, in particular to a protocol system oriented to Generalized Multiprotocol Label Switching (GMPLS, Generalized Multiprotocol Label Switching), capable of effectively The invention relates to a parallel signaling method for shortening the time delay of establishing an optical channel connection, which belongs to the technical field of optical communication. Background technique [0002] The Internet dominated by IP technology has been unable to meet the new demands of the rapidly growing data services. For this reason, people turn their attention to the optical network technology which is developing vigorously. At present, optical network technology has been widely adopted as a new technical method. [0003] In traditional optical networks, the optical layer is only regarded as a simple transmission too...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/00H04Q3/52H04B10/20
Inventor 纪越峰胡晓阳乔耀军
Owner BEIJING UNIV OF POSTS & TELECOMM
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