Unlock instant, AI-driven research and patent intelligence for your innovation.

Packetswitch for a telecommunication node

A technology for switching systems and telecommunication networks, which is applied in multiplexing system selection devices, transmission systems, digital transmission systems, etc., and can solve problems such as long running time

Inactive Publication Date: 2007-06-06
ALCATEL LUCENT SAS
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for high volume switching, this requires long runtimes and / or imposes resources on very high-speed processing devices which are therefore expensive

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Packetswitch for a telecommunication node
  • Packetswitch for a telecommunication node
  • Packetswitch for a telecommunication node

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0075] Fig. 3 schematically represents an example of the realization of the central arbitration unit CSC connected to the input modules IM1, IM2, IMi, IMm.

[0076] The arbitration unit CSC basically comprises a sequencer SQ cooperating with the processing units PU1, PU2, PUi, PUm. According to the example represented, the number of processing units is the same as the number of input modules, but as will be explained later, this is not the only possibility.

[0077] The sequencer SQ is designed to activate consecutive arbitration cycles to a specific cadence. The rhythm is theoretically a fixed frequency Fa, but it can follow other rules if desired.

[0078] For each arbitration cycle, the sequencer SQ activates p consecutive phases respectively associated with p functions. The p functions are defined, for example, by different values ​​of the divisor dx, where "x" is an integer between 1 and p, inclusive, where each value is an indicator of a corresponding phase of a partic...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

In order to switch selectively via a packets switching matrix waiting in the input modules (IMi) to address output modules, an arbitration function (CSC) selects by successive cycles, from all the pairs of input and output modules, separate subsets. Each cycle comprises p successive phases (x) associated respectively to p arbitration functions. Processing units (PUi) each execute the p functions, each function acting on three parameters termed 'residual required quantity', 'input capacity' and 'output capacity', the values of which are related to a single pair and are set at the start of the cycle. Each phase consists of N successive steps (y) associated respectively to said subsets, each step being executed in parallel by the processing units (PUi) in order to calculate by means of the arbitration functions the 'partial' accepted quantity values and to reset the parameters for the next step. Application to telecommunication networks, particularly multiservice.

Description

technical field [0001] The invention belongs to the field of telecommunication networks and relates to switching systems used in network nodes. Background technique [0002] The invention relates more particularly to switching systems capable of handling data organized into packets (packet switching). It also concerns so-called "multi-service" switching systems, i.e. capable of packet switching, as well as handling data organized in other transport formats (circuit switched), typically in formats such as those following SDH or SONET protocols, or ODU (" Optical Data Unit") time-division multiplexed ("TDM") organized data. [0003] The term "packet" here means any set of data assembled according to a pre-set format of information data ("payload") to be transmitted, together with ancillary data contained eg in a header. The header contains in particular an indication of the packet's destination and a general quality of service level. An indication may be an explicit destina...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04Q11/00H04L12/56
CPCH04L49/3072H04L49/101H04L49/205H04L49/25H04L49/254H04L49/3045H04L49/503
Inventor G·波斯特L·努瓦雷S·古奇F·瓦伦特
Owner ALCATEL LUCENT SAS