NDLI: OPN07-6: New Approaches for Dynamic Routing with Availability Guarantee for Differentiated Services in Survivable Mesh Networks: The Roles of Primary-Backup Link Sharing and Multiple Backup Paths

Content Provider	IEEE Xplore Digital Library
Author	Lei Song Mukherjee, B.
Copyright Year	2006
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Univ. of California, Davis, CA (Lei Song)
Abstract	Survivability is a very important problem in telecom networks. Many previous works discuss availability-guaranteed and service-differentiated provisioning. Our work makes two new contributions. First, we consider link sharing between a primary path and backup path(s). In order to achieve better capacity utilization, a connection can share some highly reliable links in common among its primary and backup paths. Second, we consider 1+N (Nges2) protection schemes for those connections which have extremely high availability requirements or have always-on service quality demands. Multiple backup paths are provided to an availability-stringent connection, compared to the traditional 1+1 protection scheme which may have to block some high-availability connections. We develop a mathematical model to quantify a connection's availability with 1+N (Nges2) protection with k-link (kges1) sharing. Based on the model, we propose a provisioning algorithm for dynamic connections with differentiated availability requirements. A connection can be either unprotected, 1+1 protected, or 1+2 protected using our current model with the 1+N extension being an open problem. One-link sharing is allowed among primary and backup paths. The illustrative numerical results show that our approach achieves better performance in both blocking probability and resource utilization, compared to a traditional 1+1 provisioning strategy.
Starting Page	1
Ending Page	5
File Size	180394
Page Count	5
File Format	PDF
ISBN	1424403561
ISSN	1930529X
DOI	10.1109/GLOCOM.2006.399
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-11-27
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Routing Availability Mesh networks Protection Wavelength division multiplexing WDM networks Quality of service Computer networks Telecommunication computing Computer science
Content Type	Text
Resource Type	Article

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