Connection Admission Control for a WDM Optical Network Based on Traffic Monitoring and Bandwidth Release

Author

Almeida, Helvécio M. ; De Queiroz, Eduardo M G ; César, Amílcar C.

Author_Institution

EESC, Univ. of Sao Paulo, Sao Carlos, Brazil

Volume

14

Issue

7

fYear

2010

fDate

7/1/2010 12:00:00 AM

Firstpage

673

Lastpage

675

Abstract

We proposed a connection admission control (CAC) to monitor the traffic in a multi-rate WDM optical network. The CAC searches for the shortest path connecting source and destination nodes, assigns wavelengths with enough bandwidth to serve the requests, supervises the traffic in the most required nodes, and if needed activates a reserved wavelength to release bandwidth according to traffic demand. We used a scale-free network topology, which includes highly connected nodes (hubs), to enhance the monitoring procedure. Numerical results obtained from computational simulations show improved network performance evaluated in terms of blocking probability.

Keywords

telecommunication congestion control; telecommunication traffic; wavelength division multiplexing; WDM optical network; bandwidth release; computational simulations; connection admission control; destination nodes; scale-free network topology; shortest path connecting source; traffic monitoring; wavelength division multiplexing; Admission control; Bandwidth; Bit rate; Communication system traffic control; Joining processes; Monitoring; Network topology; Optical fiber networks; Telecommunication traffic; Traffic control; WDM networks; Wavelength division multiplexing; Connection admission control; monitoring; scale-free network; wavelength division multiplexing;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2010.07.091657

Filename

5545627