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Method and device for implementing multi-channel encapsulation in SDH virtual cascading frame maker

A multi-channel, virtual concatenation group technology, applied in multiplex communication, time-division multiplex system, electrical components, etc., can solve problems such as difficulty in implementation, achieve the effect of reducing use cost and improving processing efficiency

Active Publication Date: 2011-05-11
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no matter GFP, PPP / HDLC, or LAPS encapsulation protocols are all byte-based protocols. When the bit width is increased, the realization of the encapsulation process is very difficult.

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  • Method and device for implementing multi-channel encapsulation in SDH virtual cascading frame maker
  • Method and device for implementing multi-channel encapsulation in SDH virtual cascading frame maker
  • Method and device for implementing multi-channel encapsulation in SDH virtual cascading frame maker

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Embodiment Construction

[0035] Various preferred embodiments of the present invention will be described in more detail below in conjunction with the accompanying drawings.

[0036] The main design idea of ​​the method of the present invention is to convert the fixed "single-byte operation" of each encapsulation into a fixed burst mode operation of multiple byte time slice operations, encapsulation processing and reading / writing to RAM The operation processing is carried out simultaneously, and its operation mode is similar to the active-standby switching operation in turn.

[0037] It is set that the sealing process of the present invention is processed in the order of fixed time slices 0, 1, ... N-1, N, N+1, ..., and the channel processed by time slice N is called VCG(N), the physical VCGi corresponding to VCG(N) is determined by the scheduler (i represents the real physical VCG port number, starting from 0). In the time slice N, the encapsulation process on the data of VCG(N) lasts for a fixed num...

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Abstract

The invention discloses a method and a device for realizing multi-channel encapsulation processing in SDH virtual cascade framers, utilizing a multi-channel encapsulation processor to realize the conversion from single byte processing to multiple byte burst-mode processing. The method thereof includes that the multi-channel encapsulation processor enters the waiting state from a time slice N-1, waiting for the beginning of a time slice N; after the time slice N begins, the scheduler in the multi-channel encapsulation processor determines the channel virtual cascade group N+1 that is needed toprocessed by the time slice N+1; determine whether the virtual cascade group N+1 is identical with the virtual cascade group N or not, and if not, the encapsulation state and the intermediate variable of the virtual cascade group N-1 are saved in the state cache RAM, and read out the encapsulation state and the intermediate variable of the virtual cascade group N+1, wherein N is a natural number for counting. The method and the device in the invention only uses an encapsulation processor to realize the encapsulation processing of multiple VCG channels, enhancing the processing efficiency and reducing the application cost.

Description

technical field [0001] The present invention relates to a SDH (Synchronous Digital Hierarchy, Synchronous Digital Hierarchy) method and device, in particular to a method and device for realizing multi-channel encapsulation processing on an SDH virtual concatenation framer. Background technique [0002] As the mainstream equipment of the current transport network, SDH equipment has been widely used in the communication field. Its standard VC-12, VC-3, VC-4 (Virtual Container, virtual container) containers can be used to carry E1, E3 / T3 , E4 and other fixed-bandwidth TDM (Time Division Multiplexing, time-division multiplexing) services, so the demand for VC cascading is not strong, but with the rapid development of data services, SDH equipment to carry data services has become a problem that must be solved. [0003] One of the characteristics of data services is the uncertainty of bandwidth. Since it is a packet service, the actual service bandwidth is not necessarily related ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J3/16H04J3/04H04L29/06
Inventor 冯景斌
Owner ZTE CORP