Please use this identifier to cite or link to this item: https://doi.org/10.1109/TCOMM.2009.04.070281
Title: LSP partial spatial-protection in MPLS over WDM optical networks
Authors: Zheng, Q. 
Gurusamy, M. 
Keywords: Partial spatial-protection
Protection grade
Restorable probability
Unprotected fiber
Issue Date: 2009
Source: Zheng, Q., Gurusamy, M. (2009). LSP partial spatial-protection in MPLS over WDM optical networks. IEEE Transactions on Communications 57 (4) : 1109-1118. ScholarBank@NUS Repository. https://doi.org/10.1109/TCOMM.2009.04.070281
Abstract: We consider Label Switched Path (LSP) protection for connections with various protection grade requirements in multi-protocol label switching (MPLS) over wavelength division multiplexing (WDM) optical networks. In full protection, bandwidth needs to be reserved for the backup LSP to protect the failure of any fiber along the primary LSP. In this paper, we study the problem of partial spatial-protection (PSP) where bandwidth is reserved for the backup LSP to protect the failure of a subset of fibers traversed by the primary LSP to satisfy the specified protection grade. We formulate the optimal LSP PSP problem as an ILP and identify three suboptimal problems. For each suboptimal problem, an exhaustive search algorithm and a heuristic are developed. We analyze the probability that a connection can be restored upon a fiber failure and find that it is higher than or equal to the protection grade specified. We also develop a failure recovery protocol which specifies recovery operations upon failure and determines whether a connection can be recovered if the failed fiber is one of its unprotected fibers. Through extensive simulation experiments, we demonstrated that the proposed LSP PSP algorithms perform better than shared LSP protection in blocking probability and resource efficiency. © 2009 IEEE.
Source Title: IEEE Transactions on Communications
URI: http://scholarbank.nus.edu.sg/handle/10635/56537
ISSN: 00906778
DOI: 10.1109/TCOMM.2009.04.070281
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

4
checked on Dec 14, 2017

WEB OF SCIENCETM
Citations

3
checked on Nov 17, 2017

Page view(s)

22
checked on Dec 10, 2017

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.