System for implementing elastic permanent virtual connection and its method

A virtual connection and permanent technology, applied in the system field of realizing elastic permanent virtual connection, can solve the problem that users cannot know and use channels, and achieve the effect of saving bandwidth and flexible networking

Inactive Publication Date: 2004-02-25
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the ADD PARTY message sent by the signaling entity on the network side does not contain VPI and VCI identifiers, even if the network device can provide a logical multicast channel, the user still cannot know and use the channel

Method used

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  • System for implementing elastic permanent virtual connection and its method
  • System for implementing elastic permanent virtual connection and its method
  • System for implementing elastic permanent virtual connection and its method

Examples

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Embodiment Construction

[0032] The elastic permanent virtual connection (Stretchy PVC) proposed in the present invention is a hybrid connection establishment method, which is realized through a standard signaling protocol process, and only has permanent virtual connections (PVC) at the start and end of the connection establishment. Feature, and the connection establishment method with the switch virtual connection (SVC) feature in the middle of the connection. This connection establishment method is equivalent to PVC for terminal equipment, which is convenient for users to accept; but for network intermediate nodes, it is SVC, which can realize the dynamic allocation and release of resources through the process of signaling interaction.

[0033] In the UNI series of protocol specifications and the NNI series of protocol specifications, some information units carried in the SETUP and ADD PARTY messages used to create a connection are interpreted by the user terminal, and the intermediate nodes transparent...

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Abstract

The present invention discloses a system for implementing elastic permanent virtual connection and its method. The system includes successively-connected data layout module, elastic PVC module, signalling module and route module. It also provides the function of the above-mentioned every module, and said invented method is characterized by that the headend VPI and VCI values and terminal end VPI and VCI values are loaded into wideband high-layer information unit or wideband low-layer information unit, and the transparent transmission can be made in intermediate node so as to create the elastic permanent virtual connection.

Description

Technical field [0001] The invention relates to a system and method for realizing elastic permanent virtual connection in the field of data communication. Background technique [0002] Permanent virtual connection (PVC) and switched virtual connection (SVC) are two basic connection establishment methods for ATM switches. The VPI (virtual path identifier) ​​and VCI (virtual channel identifier) ​​identifiers of the permanent virtual connection are directly configured and designated by the network management system, while the VPI and VCI identifiers of the exchange virtual connection are dynamically allocated through a standard signaling process. PVC does not require the support of user-side equipment, which is convenient for user acceptance, but the configuration is not flexible enough; SVC can realize the dynamic allocation and release of resources through the signaling interaction process, but it needs the support of user terminal equipment. Elastic permanent virtual connection (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/16H04L12/28
Inventor 郝卫国张弦王玫
Owner ZTE CORP
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