NDLI: Benefits of p-cycles in a mixed protection and restoration approach

Content Provider	IEEE Xplore Digital Library
Author	Blouin, F.J. Sack, A. Grover, W.D.
Copyright Year	2003
Description	Author affiliation: Nortel Networks, Ottawa, Ont., Canada (Blouin, F.J.)
Abstract	There are reasons to expect that the protection switching times of p-cycles will allow them to be considered for protecting services where previously only 1+1 automatic protection switching would have been specified, for the highest speed. Here we introduce p-cycles as an option in a mixed-method environment to protect demands that do not strictly require dedicated 1+1 APS, but need a faster switching time than provided by shared backup path protection. Results show that in a mixed services environment, realizing such demands with p-cycles rather than 1+1 APS can produce a significant capacity saving. To further explore the potential of mixed-method design, we also test an approach where individual demands are not strictly assigned to be realized by a particular method. Instead, each path may be protected with any method that gives the minimum required service guarantee, but where possible or advantageous in the overall design, paths can be protected by an even faster method than required. For instance, a requirement for 200 ms, usually served by an SBPP realization, may (selectively) be realized instead with p-cycle protection at 80 ms. This optimization of the protection method selection produces a small further capacity savings, but provides a remarkable increase in the number of service paths that enjoy faster protection than strictly required by their class of service specification. When modularity is included, this new design approach provides even greater improvement in protection quality.
Sponsorship	IEEE TR Labs iCore TELUS ALCATEL IEEE Commun. Soc. Nortel Networks IMP Corp. IEEE Canada, Northern Canada Section Lucent Technologies QCC VPI Systems SED SaskTel YottaYotta
Starting Page	203
Ending Page	210
File Size	1277957
Page Count	8
File Format	PDF
ISBN	0780381181
DOI	10.1109/DRCN.2003.1275358
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-10-19
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Protection switching Availability Intelligent networks Signal restoration Design methodology Optimization methods Optical fiber networks Path planning Electronic mail Testing
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Mr. Siddhartha Mukherjee siddhartha@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	ndl-support@iitkgp.ac.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Libarray of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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