Method and apparatus for adapting velocity

A rate adaptation and adaptation technology, applied in electrical components, transmission systems, time division multiplexing systems, etc., can solve the problems of complex implementation, unrecognizable, and inability to achieve backward protocol compatibility well. To achieve the effect of reducing complexity and simplifying the way of discrimination

Inactive Publication Date: 2009-02-25
HUAWEI TECH CO LTD
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Problems solved by technology

[0022] 1. The implementation is complicated. Since there are many signals that can be used for rate adaptation specified in the FC protocol, to judge whether a certain signal can be used for rate adaptation signals, it is necessary to compare them one by one, resulting in complex implementation and a large occupation. Multiple resources
[0023] 2. Unable to achieve backward protocol compatibility well
Due to the development of the FC protocol, there may be new signals that can be used for rate adaptation in the future, so that we cannot compare primitives that have not yet been determined, resulting in inability to identify

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  • Method and apparatus for adapting velocity
  • Method and apparatus for adapting velocity

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Embodiment Construction

[0040] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further elaborated below in conjunction with the accompanying drawings.

[0041] The rate adaptation method adopted in the first embodiment of the present invention is as follows:

[0042] The primitive signal is identified from the FC signal, and the number of consecutive occurrences of the same primitive is counted. For example, if the number of consecutive occurrences reaches a preset threshold, such as setting the threshold to 3, it is considered that rate adaptation can be performed For primitives, at least one primitive signal identical to the primitive signal may be inserted after the third identical primitive signal; or, at least one primitive signal identical to the primitive signal may be deleted after the third identical primitive signal A primitive signal of the same primitive signal. Among them, it is a customary setting to take t...

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Abstract

The invention discloses a velocity adaptation method, which comprises the following steps: receiving an optical fiber channel (FC) signal, and identifying a primitive signal in the received FC signal; calculating continuously present identical primitive signals in the FC signal, and performing velocity adaptation processing on the FC signal if he number reaches a preset threshold. The invention also discloses a velocity adaptation device and a framing protocol transparent mode (GFPT) device. The technical proposal does not specifically identify the primitive in the FC signal, determines the continuous repetition number of the primitive signal, and performs velocity adaptation processing based on the continuous repetition number to simplify the judge manner of the velocity adaptation signal and greatly reduce the realization complexity. Moreover, the processing method does not relate to the determination of the specific primitive signal type to well support the expansion of the FC protocol in future.

Description

technical field [0001] The invention relates to the technical field of network data transmission, in particular to a rate adaptation method and device. Background technique [0002] Fiber channel (Fiber channel, FC) services can be transparently encapsulated into a general framing protocol (GFP) frame by using the general framing protocol transparent mode (GFPT) encapsulation technology, and then through the synchronous digital series (Synchronous DigitalHierarchy, SDH), Synchronous Optical Network (Synchronous Optical Network, SONET) or Optical Transport Network (Optical Transport Network, OTN) for transmission. The position of the FC device on the network is as follows: figure 1 As shown, the signal output by the FC device is transmitted to the GFPT device through the FC interface; after being converted by the GFPT device, it is transmitted through SDH / SONET / OTN. The FC device may be a FC switch, a server, a disk array, etc.; the GFPT device may be a dense wavelength div...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04J3/24H04L29/12
Inventor 侯春凡
Owner HUAWEI TECH CO LTD
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