Online routing and wavelength assignment in WDM rings

1999 ◽  
Author(s):  
Ching Law ◽  
Kai-Yeung Siu
Keyword(s):  
Routing And Wavelength Assignment ◽  
Wavelength Assignment ◽  
Online Routing ◽  
Wdm Rings

Traffic Groomings and Graph Designs

2014 ◽  
Vol 635-637 ◽  
pp. 1124-1127
Author(s):  
Zhi He Liang ◽  
Shi Xin Liang
Keyword(s):  
Routing And Wavelength Assignment ◽  
Wavelength Assignment ◽  
Wdm Networks ◽  
Wavelength Division ◽  
Graph Designs ◽  
Wdm Rings

Wavelength Division Networks (WDM) rings is a very attractive network. The key terminating equipments are add-drop multiplexers (ADMs) on the WDM networks. It is essential to find an efficient routing and wavelength assignment to a given set of traffic streams such that the total ADM cost is minimal. In this paper, we will obtain the minimal ADM number A(12,v)=v (v-1)/4 when v≡1,9 (mod 24) and v≥25.

WDM Long-Haul Networks

2021 ◽  
pp. 371-396
Author(s):  
Debasish Datta
Keyword(s):  
Wavelength Conversion ◽  
Mesh Networks ◽  
Routing And Wavelength Assignment ◽  
Wavelength Assignment ◽  
Wdm Networks ◽  
Analytical Models ◽  
Effective Solution ◽  
Bandwidth Utilization ◽  
Online Routing ◽  
Design Challenges

Ever-increasing traffic in the long-haul networks called for WDM-based transmission, all the more when compared to the metro and access segments. Further, although the interconnected WDM rings served the needs of long-haul networks for some time, mesh-connected WDM networks appeared as a natural and more effective solution, with enhanced connectivity and resilience against network failures. In this chapter, we first examine the basic design challenges and the candidate node configurations for WRON-based mesh networks. Next we present various offline design methodologies for this class of networks using LP-based and heuristic schemes. Impact of wavelength conversion (WC) in mesh-configured WRONs is also examined by using analytical models, and the gain in bandwidth utilization is assessed in WRONs with full WC as compared to those without any WC. Finally, we examine some online routing and wavelength assignment schemes that can be used for operational WRONs. (143 words)

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