Method and apparatus for detecting and locating failure in telecommunication network

A telecommunications network and fault technology, applied in the field of data transmission, can solve problems such as inability to accurately locate interrupted connections, inability to accurately locate, and complex ATM loopback procedures

Inactive Publication Date: 2003-10-29
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Actually, the ATM loopback procedure is very complex
For example, the end-to-end loopback packet procedure cannot accurately locate a broken connection between a source node and a non-adjacent destination node
Furthermore, the segment loopback procedu...

Method used

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  • Method and apparatus for detecting and locating failure in telecommunication network
  • Method and apparatus for detecting and locating failure in telecommunication network
  • Method and apparatus for detecting and locating failure in telecommunication network

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Embodiment Construction

[0063] The present invention identifies and locates disconnected connections at or between switching nodes in a telecommunications connection. Although the following discussion describing the present invention focuses on facilities using Asynchronous Transfer Mode Adaptation Layer 2 (AAL2), those skilled in the art will recognize that the present invention can be implemented using Asynchronous Transfer Mode (ATM) layers, or other The well-known ATM adaptation layer in the art is applied.

[0064] FIG. 1 shows an AAL2 connection 100 between a source node 105 and a destination node 110 . AAL2 connection 100 includes three intermediate nodes 115 between source node 105 and destination node 110 . The purpose of the intermediate node 115 is to perform packet switching functions for routing AAL2 data. Furthermore, AAL2 connection 100 includes a plurality of concatenated AAL2 channels 120, where each AAL2 channel 120 forms part of an AAL2 link between adjacent nodes. Although diff...

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Abstract

In a telecommunications network, a broken connection can be detected and located by the next-hop loopback technique. The next hop loopback technique involves generating, sending, and analyzing specific data packets attempting to traverse a telecommunications connection node by node. It is then possible to determine whether a connection has been disconnected based on the fact that data packets cannot properly traverse the link, notify the network management system of the location of the disconnected connection, and determine whether to authorize appropriate action so that the network operator can make the data Reroute to bypass that part of the network. In addition, the next-hop loopback technique can be initiated by the end user on an "as needed" basis rather than on a periodic basis, thereby saving network time and resources.

Description

technical field [0001] The invention relates to data transmission in telecommunication networks. More particularly, but not limited thereto, the present invention relates to methods and devices for detecting and locating faults in telecommunication networks. Background technique [0002] Asynchronous Transfer Mode (ATM) is a standard protocol for transmitting telecommunication data over telecommunication networks. It is based on the transmission of data in fixed-sized data packets, called ATM cells, each ATM cell having a payload part of 48 octets and a header part of 5 octets. ATMs are well known in the art. [0003] ATM is often used to transport low bit rate data, eg low bit rate voice data, in telecommunication networks. However, standard ATM cannot efficiently transport low bit rate data. More specifically, standard ATM necessarily imposes significant delays on low bit rate data transmissions. Unfortunately, low bit rate data, such as low bit r...

Claims

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Application Information

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IPC IPC(8): H04Q11/04H04L69/40H04L12/56H04L12/64
CPCH04L2012/5625H04L2012/5627H04Q11/0478H04L12/28
Inventor L·G·彼得森J·诺格拉-罗德里格兹
Owner TELEFON AB LM ERICSSON (PUBL)
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