Method and device for processing virtual concatenation group overtime delay

A technology of virtual concatenation group and processing method, which is applied in time division multiplexing systems, electrical components, multiplexing communication, etc. recovery, etc.

Inactive Publication Date: 2010-01-13
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the delay of VC members in the SDH network changes, for example, an abnormal switching occurs in the SDH network, which causes the path of some members to change, and the network delay increases. If the delay difference between members exceeds the capacity of the cache range, the sink cannot recover the complete data flow
[0004] In the current VC implementation scheme, when the above situation occurs, the data flow of the entire VCG will not be restored

Method used

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  • Method and device for processing virtual concatenation group overtime delay
  • Method and device for processing virtual concatenation group overtime delay
  • Method and device for processing virtual concatenation group overtime delay

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Embodiment Construction

[0035]The core idea of ​​the present invention is: when using a VCG composed of multiple members to transmit data, only the delay of some members is too large, which exceeds the actual delay compensation range, while the delay between some members does not exceed the delay compensation For the feature of scope, first, the sink compares the MFI and PTR of each member in the VCG to determine the delay-overrunning members and non-delay-overrunning members, and each member sends an MST to the source according to whether the delay is overrun. The received MST temporarily deletes the delay overrun member in the VCG, and distributes the data carried by the delay overrun member to the non-delay overrun member, and the non-delay overrun member sends the data to the sink, so that , the sink can restore the complete data stream; the sink compares the MFI and PTR of each member in the VCG at each latch cycle, and determines the delay overrun members and non-delay overrun members, and each ...

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Abstract

The invention discloses a method for processing virtual concatenation group (VCG) overtime delay, which comprises the following steps of: obtaining a multiple frame indication (MFI) and a multiple frame relay (PTR) of each member in the VCG getting to a destination end according to a multiple frame header of a virtual container (VC) in a synchronous digital hierarchy (SDH); and comparing the obtained MFI and PTR of each member, obtaining a time delay comparison result, feeding a member state territory (MST) back to a source end by each member in the VCG taking the serial-number identifier (SQ) thereof as a symbol according to the time delay comparison result, temporarily deleting a member having overtime delay by the source end, and restoring a complete data stream by the destination end. The invention also discloses a device for processing the virtual concatenation group overtime delay, which comprises a multiple frame header extracting unit, a latch unit, a time delay comparing unit, an MST feedback unit and an overtime delay processing unit. The method and the device can guarantee that the destination end can restore the complete data stream when an overtime delay member exists in the VCG.

Description

technical field [0001] The present invention relates to a virtual concatenation group (VCG, Virtual Concatenation Group) processing technology, in particular to a VCG delay overrun processing method and device. Background technique [0002] Synchronous Digital Hierarchy (SDH, SynCHronous Digital HieraCHy) network, as a mature transmission network, has been constructed and applied on a large scale. In order to allow data services to be transmitted on the SDH network, technologies such as Virtual Concatenation (VC, Virtual Concatenation) and Link Capacity Adjustment Scheme (LCAS, Link Capacity Adjustment SCheme) in SDH are applied to make the SDH network meet the requirements of high data service bandwidth. , with the characteristics of flexible bandwidth adjustment. [0003] The virtual concatenation technology is a technology that combines multiple members into a whole to deliver high-bandwidth services, and the LCAS technology provides a method for dynamically adjusting th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/08H04J3/16
Inventor 罗伟
Owner ZTE CORP
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