A preferential shared path protection algorithm for WDM optical network

ZHAO Tai-fei; WANG Wen-ke; LIU Long

In order to improve the reliability of wavelength division multiplexing(WDM),the segmented shared path protection(SSPP) algorithm is usually adopted.It requires equal length segmentation in WDM optical networks and it must obey the shared risk link group(SRLG) constraint.When searching protection path,the SRLG constraint will lead the call blocking probability of the networks to rise.In order to reduce the call blocking probability,a new path protection algorithm,so-called preferential shared path protection(PSPP) was proposed.The simulation of SSPP and PSPP algorithms was done in the discrete event emulation system.The result shows the call blocking probability of the PSPP algorithm is better than that of the SSPP algorithm,and the resource reservation ratio of PSPP is also relatively better.

Corresponding author: ZHAO Tai-fei, zhaotaifei@163.com;

1. Faculty of Automation and Information Engineering, Xi'an University of Technology, Xi'an 710048, China;

2. School of Electronic and Information Engineering, Xi’an Jiaotong University, Xi'an 710049, China

Received Date: 2011-09-16

Accepted Date: 2011-10-24

Available Online: 2012-05-25

Abstract: In order to improve the reliability of wavelength division multiplexing(WDM),the segmented shared path protection(SSPP) algorithm is usually adopted.It requires equal length segmentation in WDM optical networks and it must obey the shared risk link group(SRLG) constraint.When searching protection path,the SRLG constraint will lead the call blocking probability of the networks to rise.In order to reduce the call blocking probability,a new path protection algorithm,so-called preferential shared path protection(PSPP) was proposed.The simulation of SSPP and PSPP algorithms was done in the discrete event emulation system.The result shows the call blocking probability of the PSPP algorithm is better than that of the SSPP algorithm,and the resource reservation ratio of PSPP is also relatively better.

HTML

Reference (9)

[1]	GUO L,LI L. A novel survivable routing algorithm with partial shared-risk link groups (SRLG)-disjoint protection based on differentiated reliability constraints in WDM optical mesh networks[J].IEEE Journal of Lightwave Technology,2007,25 (6):1410-1415.
[2]	GUAN A,SUN J.Impact of OXC architecture on the accumulation of intraband crosstalk in WDM optical networks[J].Laser Technology,2006,30(6):653-656(in Chinese).
[3]	GUO L,CAO J,YU H,et al.Path-based routing provisioning with mixed shared protection in WDM mesh networks[J].IEEE Journal of Lightwave Technology,2006,24(3):1129-1141.
[4]	SHAO K,BAI Y,CHENG X,et al.Best effort SRLG failure protection for optical WDM networks[J].IEEE Journal of Optical Communications and Networking,2011,3 (8):739-749.
[5]	PAPADIMITRIOU D,POPPE F,JONES J,et al.Inference of shared risk link group,internet draft[EB/OL].[2001-02-01].a
[6]	CAO J,GUO L,YU H F,et al.Dynamic segment shared protection algorithm for reliable wavelength-division-multiplexing mesh networks[J].Optics Express,2005,13(8):3087-3095.
[7]	OU C,ZANG H,SINGHAL N K.Subpath protection for scalability and fast recovery in optical WDM mesh networks[J].IEEE Journal on Selected Areas in Communications,2004,22(9):1859-1875.
[8]	HO P H,MOUFTAH H.A framework for service-guaranteed shared protection in WDM mesh networks[J].IEEE Communications Magazine,2002,40 (2):97-103.
[9]	ZHANG X N,LI L M,WANGS.et al.A novel hybrid survivable algorithm for single-link failure in WDM optical networks[J].Journal of Optoelectronics稬aser,2008,19 (5):604-609(in Chinese).

A preferential shared path protection algorithm for WDM optical network

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Proportional views