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Method for measuring equivalent delay of data message in PTN system

A technology of data message and equivalent delay, applied in transmission systems, digital transmission systems, data exchange networks, etc., to achieve the effect of practical operation and simple operation

Inactive Publication Date: 2011-08-31
FENGHUO COMM SCI & TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the defects existing in the prior art, the purpose of the present invention is to provide a method for measuring the equivalent time delay of a data message in a PTN system, so as to solve the problem that the DMM and DMR messages defined by ITU-T G.8114 can only be equivalently measured The delay of the data message of the same length as the delay measurement message, there is a problem of measuring the equivalent delay of data messages of various lengths in practical applications

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  • Method for measuring equivalent delay of data message in PTN system
  • Method for measuring equivalent delay of data message in PTN system
  • Method for measuring equivalent delay of data message in PTN system

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Embodiment Construction

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0023] Delay measurement is divided into two-way delay measurement and one-way delay measurement. For two-way delay measurement, one end sends a DMM packet, and the receiving end replaces certain fields of the DMM packet to generate a DMR packet and send it back to the sending end. DMM and DMR messages contain timestamp information. The sending end can calculate the time interval from sending the DMM message to receiving the DMR message according to the received DMR message, that is, the two-way delay. In one-way delay measurement, one end sends a 1DM packet, and the receiving end calculates the one-way delay based on the timestamp of the 1DM packet. In the following, the present invention only takes the DMM message as an example, and the DMM message and data TLV in the drawings and the following description are only exemplary, and are not intended to limit...

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Abstract

The invention discloses a method for measuring the equivalent delay of a data message in a PTN system, which comprises: 1, a step of PTN equipment delay test, in which a delay test OAM message is generated, and a variable-length data type length value TLV field or test TLV field is inserted in front of the last field End TLV of the delay test OAM message; 2, a step of according to the length of a data message to be measured, modifying the length of the inserted variable-length data type length value TLV field to make the total length of the modified OAM message equal to the length of the message to be measured; and 3, a step of obtaining an equivalent delay of a data frame of the same length through a time stamp in the modified OAM message. The method for measuring the equivalent delay of the data message in the PTN system has the advantage that the modified message formula does not influence the calculation process of delay measurement and the advantages of practicality and simple operation.

Description

technical field [0001] The invention relates to a method for measuring the equivalent time delay of data messages of different lengths in a packet transport network (PTN) based on T-MPLS technology, specifically a method for measuring the equivalent time delay of data messages in a PTN system . In particular, it refers to an implementation method of measuring the equivalent time delay of data packets of different lengths by using OAM packets in a PTN system. Background technique [0002] With the massive application of packet data, T-MPLS technology has become a mainstream packet transmission technology recognized by the industry relying on its connection-oriented features, rich operation, maintenance and management (OAM) functions and protection switching functions. According to the architecture of the T-MPLS layer network defined by ITU-T G.8110.1, and the T-MPLS layer network operation and maintenance mechanism defined by ITU-T G.8114, T-MPLS is in the T-MPLS channel lay...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/26H04L12/56
Inventor 涂育红
Owner FENGHUO COMM SCI & TECH CO LTD