Abstract

This paper studies the problem of signal-quality-guaranteed lightpath provisioning in survivable translucent optical networks under dynamic traffic. A new protection scheme, called regeneration-segment protection (RSP), is proposed. Provisioning approaches with shared path protection and shared RSP are presented. Two main signal quality constraints are integrated with the provisioning problem. Different regenerator placement strategies for working path and protection path are employed. Joint path selection method is used to select the “optimal” working-protection pair. With the above considerations, survivable lightpath provisioning with signal-quality-guarantees is achieved in a cost-effective manner. Results show that in a moderate-size network, RSP has less blocking probability than path protection when the network load is low or modest. Besides, RSP obtains better performance in terms of recovery time than path protection in all network scenarios.

© 2005 Optical Society of America

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References

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  1. A. L. S. Filho and H. Waldman, "Strategies for Designing Translucent Wide-Area Networks," in Proceedings of International Microwave and Optoelectronics Conferenc-IMOC'03 (Foz do Iguacu, PR, Brazil, 2003), 931-936.
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  3. H. Zang and R. P. J. Huang, "Methodologies on Designing a Hybrid Shared-Mesh-Protected WDM Network with Sparse Wavelength Conversion and Regeneration," in Asia-Pacific Optical Communications Conference and Exhibition 2000, S. Xie, C. Qiao and Y. C. Chung, eds., Proc. SPIE 4910, 188-196 (2000).
    [CrossRef]
  4. E. Yetginer and E. karasan, "Regenerator Placement and Traffic Engineering with Restoration in GMPLS Networks," Photonic Network Commun. 6, 134-149 (2003).
    [CrossRef]
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    [CrossRef]
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    [CrossRef]
  7. S. Ramamurthy and B. Mukherjee, "Survivable WDM mesh networks, part I - protection," in Proceedings of IEEE’99 (New York, NY, 1999), 744-751.
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    [CrossRef]
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    [CrossRef]
  12. S. Chen and K. Nahrstedt, "An overview of quality of service routing for next-generation high-speed networks: Problems and solutions," IEEE Network. 12 64-79 (1998).
    [CrossRef]

IEEE Commun. Mag. (2)

M. Ali, "Shareability in Optical Networks: Beyond Bandwidth Optimization," IEEE Commun. Mag. 42, 11-15 (2004).
[CrossRef]

J. Strand, A. Chiu, and R. Tkach, "Issues For Routing In The Optical Layer," IEEE Commun. Mag. 39, 81-88 (2001).
[CrossRef]

IEEE Network (1)

S. Chen and K. Nahrstedt, "An overview of quality of service routing for next-generation high-speed networks: Problems and solutions," IEEE Network. 12 64-79 (1998).
[CrossRef]

J. Lightwave Technol. (2)

Opt. Express (1)

Photonic Network Commun. (1)

E. Yetginer and E. karasan, "Regenerator Placement and Traffic Engineering with Restoration in GMPLS Networks," Photonic Network Commun. 6, 134-149 (2003).
[CrossRef]

Other (5)

Alcatel's White Contribution COM 15-33-E: Electrical (BER, Q-factor, el. SNR) and Optical (OSNR, OCR) System Performance Parameters for G.DSN ITU-T SG 15 Contribution, (2000).

S. Ramamurthy and B. Mukherjee, "Survivable WDM mesh networks, part I - protection," in Proceedings of IEEE’99 (New York, NY, 1999), 744-751.

A. L. S. Filho and H. Waldman, "Strategies for Designing Translucent Wide-Area Networks," in Proceedings of International Microwave and Optoelectronics Conferenc-IMOC'03 (Foz do Iguacu, PR, Brazil, 2003), 931-936.

B. Ramamurthy, S. Yaragorla and X. Yang, "Translucent optical WDM networks for the next-generation backbone networks," in Proceedings of IEEE GLOBECOM 2001 Symposium on Optical and Photonic Communications (San Antonio, TX, 2001), 60-64.

H. Zang and R. P. J. Huang, "Methodologies on Designing a Hybrid Shared-Mesh-Protected WDM Network with Sparse Wavelength Conversion and Regeneration," in Asia-Pacific Optical Communications Conference and Exhibition 2000, S. Xie, C. Qiao and Y. C. Chung, eds., Proc. SPIE 4910, 188-196 (2000).
[CrossRef]

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Figures (9)

Fig. 1.
Fig. 1.

Network model

Fig. 2.
Fig. 2.

Illustration of path protection and regeneration-segment protection

Fig. 3.
Fig. 3.

Procedures of survivable lightpath provisioning for translucent optical networks

Fig. 4.
Fig. 4.

Regenerator placement algorithm

Fig. 5.
Fig. 5.

Wavelength assignment algorithm

Fig. 6.
Fig. 6.

Topology of USA network

Fig. 7.
Fig. 7.

Network performances for different required BER, with β = 0.5 and Nr = 20

Fig. 8.
Fig. 8.

Network performances for different values of Nr , with β = 0.5. The required BER follows 10-16 : 10-14 : 10-10 = 1 : 1 : 1

Fig. 9.
Fig. 9.

Network performances for different values of β, with Nr = 0.5. The required BER follows 10-16 : 10-14 : 10-10 = 1 : 1 : 1

Tables (1)

Tables Icon

Table 1. Physical parameters used in the simulations

Equations (15)

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OSNR b OSNR min
BER ( Q ) ( 1 2 π ) · ( exp ( Q 2 2 ) Q )
OSNR min = ( 1 + r ) ( 1 + r ) 2 ( 1 r ) 2 · Be Bo · Q 2
P ASE ( k , j ) = 2 n sp ( k , j ) · ( G ( k , j ) 1 ) · h · v · B o
P ASE ( a , b ) = Σ 1 M ( Σ j Link ( k ) P ASE ( k , j ) )
OSNR b = P l P ASE ( a , b )
Δ t PMD ( a , b ) α B
Δ t PMD ( a , b ) = Σ 1 M D PMD 2 ( k ) · L ( k )
OSNR j OSNR min
Δ t PMD ( i , j ) α B
OSNR j + 1 < OSNR min or Δ t PMD ( i , j + 1 ) > α B
C p ( λ ) = { ε 1 × C ( λ ) if λ is usd by other protection paths and sharable C ( λ ) if λ is free
C p ( r ) = { 0 if r is used by the corresponding working path ε 2 × C ( r ) if r is used by other protection paths and sharable C ( r ) if r is free
CW = Σ λ p C w ( λ ) + Σ λ p C w ( r )
CP = Σ λ p C p ( λ ) + Σ λ p C p ( r )

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