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Switching apparatus having universal transport of data packet frames

A technology of data grouping and equipment, applied in the direction of data exchange network, digital transmission system, transmission system, etc., can solve the problem of not clearly showing the structure of the internal transmission structure payload data, etc.

Inactive Publication Date: 2007-08-08
ALCATEL LUCENT SAS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It uses an internal transport structure of the ATM / AAL2 (ATM / ATM Matching Layer Type 2) type, which does not explicitly show the structure of the payload data transmitted in the internal transport structure

Method used

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  • Switching apparatus having universal transport of data packet frames
  • Switching apparatus having universal transport of data packet frames

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Embodiment Construction

[0031] The object of the invention is to enable the universal transmission of data packet frames in a frame switching device connected to at least two different types of transmission networks.

[0032] In the following description, by way of non-limiting example, it is assumed that the switching equipment is connected to only two transport networks, namely an ATM type network (N1) and an IP type network (N2) such as a 3GPP IP mobile network. The switching device (G) is a voice / media gateway (or media gateway (MGW)) with an Ethernet switch (SM).

[0033] However, the invention is not limited to those types of transport networks and switching equipment. It relates to all packet transport networks, and in particular to those known by the abbreviations ATM, 3GPP ATM IP, 3GPP IP, MPLS (Multiprotocol Label Switching) and GMPLS (General MPLS), and to all Ethernet or other switching equipment, so The devices described above are capable of exchanging packets of different types, in par...

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Abstract

Apparatus is dedicated to switching data packet frames of different types coming from at least two transport networks that use different transport protocol layers. Said apparatus comprises a switching module and at least two access cards, each of which is connected to a respective one of said networks and to said switching module, each access card including processing means that, when they receive a frame coming from a source network to which they are connected and for a destination network, have the tasks of removing from said frame the transport protocol layers that it contains, and then of adding an internal header to the payload data of at least one packet of said frame, prior to transmitting it to said switching module, said internal header comprising at least: i) a channel identifier field containing a value representative of a channel assigned to the connection used by said frame on being set up; ii) a length field containing a value representative of the number of bytes contained in the packet in question; and iii) a type field containing values representative of characteristics of the payload data of the packet in question.

Description

technical field [0001] The invention relates to a packet transmission network, in particular to a switching device for exchanging data packets between different types of packet transmission networks. Background technique [0002] Here, the term "switching device" is used to denote any network device that has a different type of task of switching packets, for example, an automatic switch (such as an E10 type switch) or a media / voice gateway (or media gateway (MGW)), or in a base station Switching equipment used in a controller (BSC) or in a radio network controller (RNC), or a switching device used in a serving general packet radio service support node (SGSN) type or a gateway general packet radio service support node (GGSN) type node (GGSN) A device for exchanging packets between different types of networks, such as certain Asynchronous Transfer Mode (ATM), 3rd Generation Partnership Project (3GPP) ATM, Internet Protocol (IP), and 3GPP IP networks. [0003] As known to thos...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L12/66H04L1/00H04L29/06
CPCH04L69/18H04L69/22H04L69/08H04L49/602
Inventor P·多洛Y·斯特凡
Owner ALCATEL LUCENT SAS
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