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Processing method for communication system transmitting and receiving data using general frame forming rule

A general framing procedure and communication system technology, applied in the field of general framing procedures, can solve problems such as unable to correctly identify the length, unable to correctly transmit super long GFP frames, unable to extract, etc.

Active Publication Date: 2009-07-08
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a GFP frame whose payload field length is greater than 65535 bytes, the PLI cannot correctly identify its length, and the receiving side cannot correctly and completely extract the payload information of the GFP frame, that is, the customer service data, from the data stream according to the value of the PLI. Existing GFP protocol cannot transmit oversized GFP frames correctly

Method used

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  • Processing method for communication system transmitting and receiving data using general frame forming rule
  • Processing method for communication system transmitting and receiving data using general frame forming rule
  • Processing method for communication system transmitting and receiving data using general frame forming rule

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Embodiment Construction

[0036] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0037] The core idea of ​​the present invention is: in the process of GFP sending data, when encountering the ultra-long GFP frame whose core frame header cannot correctly identify the length of the payload field, add an ultra-long frame identification in the core frame header, and use the GFP The specified field of the net load header of the frame indicates the length of the net load of the GFP frame; in the process of GFP receiving data, if it is judged that the received core frame header has a super long frame mark, then from the net load of the GFP frame Analyze the length of the payload of the GFP frame in the designated field of the header, and correctly extract the GFP frame from the data stream according to the resolved length.

[0038] On the sending side of GFP, when the GFP module receives the client data to be sent from the upper ...

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Abstract

This invention discloses a process method for T-R data by a GFP communication system including: in the process of transmitting data by the GFP, when its core frame can't identify the super long frame of the net load domain correctly, then the super long frame is added in the core frame and the appointed domain of the net load is used to mark its length of the GFP frame, in the process of receiving data, if it is judged that the core frame includes the identification of the super long frame, then the length of the net load is analyzed from the appointed domain of said GFP frame to pick up said GFP frame correctly from the data flow based on the analyzed length.

Description

technical field [0001] The invention relates to a Generic Framing Procedure (GFP, Generic Framing Procedure) technology in communication system transmission technology, in particular to a processing method for sending and receiving data in a communication system using GFP. Background technique [0002] At present, in order to make full use of the existing Synchronous Optical Network (SONET) / Synchronous Digital Hierarchy (SDH) and Optical Transport Network (OTN), telecom operators adopt the Generic Framing Procedure (GFP, Generic Framing Procedure) to integrate multiple business forms ( For example, the data of Ethernet, IP / point-to-point protocol, MPLS, etc.) are mapped to SONET / SDH network and OTN for transmission. [0003] GFP is a scheme proposed by the International Telecommunication Union Telecommunication Standardization Organization (ITU-T). For the specific scheme, refer to the standard ITU-T G.7041 / Y.1303. The following briefly introduces the transmission scheme of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06
Inventor 蒋章震
Owner HUAWEI TECH CO LTD