Browse > Article

Blocking probability improvement for Lightpath Setup based on GMPLS  

Im Song-Bin (Department of Electronic and Communication Engineering, Kwangwoon University)
Kim Kyoung-Mok (Department of Electronic and Communication Engineering, Kwangwoon University)
Oh Young-Hwan (Department of Electronic and Communication Engineering, Kwangwoon University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.41, no.12, 2004 , pp. 41-49 More about this Journal
Abstract
Increase of internet users and new types of applied traffics, have led to demand for more bandwidth for each application. Hence, the amount of internet traffic has risen sharply and it has demanded to use limited resources, such as wavelength and bandwidth, more effectively. These kind of needs can be satisfied with OXC(Optical cross-connects) based on GMPLS that carry out IP packet switching and wavelength switching at the same time and Provide very wide bandwidth. In RSVP-TE signaling of GMPLS studied by IETF. every lambda router in core network should be able to convert wavelength. So, lots of wavelength converters and needed and building and managing cost is high. Another problem is that optimized traffic is limited. In this paper We suggest strengthened GMPLS RSVP-TE signaling algorithm for a better lightpath setup. When setup signaling is blocked suggested algorithm does not send PathErr message to Edge Router, but looks for nearest lambda router which can convert wavelength and carry out setup signaling from that node. Such algorithm can reduce the chance of blocked lightpath setup signaling and provide effective arrangement of lambda router in core network by calculating proper number of wavelength converter.
Keywords
GMPLS; OXC;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Y. Xue et al., 'Carrier Optical Service Requirenents,' IETF Draft, Works in Progress, Jul. 2001
2 R. A. Barry and P.A. Humblet, 'Models of blocking probability in all-optical netwroks with and without wavelength changers,' IEEE J. on Selected Areas in Communication, vol. 14, issue 5, pp. 858-867, June 1996   DOI   ScienceOn
3 K. Kompella et al., 'IS-IS Extension in support of Generalized MPLS,' IETF Draft, Sept. 2000
4 L.-C Kao and Tsai, 'performance Analysis of A Generic GMPLS Switching Architecture with Flush Capability,' proc. IEEE ICC'02, vol. 2, pp. 1006-1010, 2002   DOI
5 D. Bertsekas and R. Gallager, Data networks, 2nd ed., Upper Saddle River, N.J. Prentice-Hall, 1992
6 P. Ashwood-Smith et al., 'Generalized MPLS signaling-CR-LDP extension,' Internet draft, July 2001
7 E. Mannie et al., 'Gerneralized Multi-Protocol Label Switching (GMPLS) Architecture,' IETF Draft, Works in Progress, Jun. 2001
8 J. M. Yates et al., 'Wavelength Converters in Dynamically Reconfigurable WDM Networks,' IEEE Communications Survers, pp. 2-14, Sencon Quater 1999
9 P. Ashwood-Smith et al., 'Generalized MPLS Signaling-RSVP-TE Extensions,' IETF Draft, Works in Progress, Jul. 2001
10 K. Kompella et al., 'OSPF Extensions in Support of Generalized MPLS,' IETF Draft, Works in Progress, Jul. 2001
11 P. Ashwood-Smith et al., 'GMPLS-Signaling Functional Description,' Internet draft, Apr. 2002
12 E. Mannie et al., 'Gerneralized Multi-Protocol Label Switching (GMPLS) Architecture,' IETF Draft, Works in Progress, Jun. 2001
13 Berger, et al., 'Generalized MPLS-RSVP-TE extensions,' Internet draft, Apr. 2002