A novel generic graph model for traffic grooming in heterogeneous WDM mesh networks
IEEE/ACM Transactions on Networking (TON)
Traffic Grooming in Optical WDM Mesh Networks (Optical Networks)
Traffic Grooming in Optical WDM Mesh Networks (Optical Networks)
Reliable multipath provisioning for high-capacity backbone mesh networks
IEEE/ACM Transactions on Networking (TON)
Traffic grooming for survivable WDM networks - shared protection
IEEE Journal on Selected Areas in Communications
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We investigate the survivable traffic grooming problem with inverse multiplexing in next-generation SONET/SDH networks employing wavelength-division multiplexing (WDM). A key feature of next-generation SONET/SDH networks is the inverse-multiplexing feature. With support of virtual concatenation (VCAT), a connection of any bandwidth can be provisioned as several subconnections (i.e., inverse-multiplexed) over diverse paths. How to efficiently protect and groom these low-speed sub-connections onto high-capacity wavelength channel, considering the typical constraints, is an important and interesting problem. We propose and investigate the characteristics of survivable muItipath traffic grooming with connection-level protection in telecom mesh networks. Our results indicate that (1) the network performance can be notably improved by exploiting the inversemultiplexing capability, (2) tight constraints have negative impact on performance, and (3) use of a single primary path after muItipath failure is helpful to reduce the impact of constraints.