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Disasters hit telecommunication structures every year. As Earth becomes more disaster-prone, telecom networks, and especially optical networks due to their high capacity, should be designed to prepare against disasters. Although disaster resiliency for optical core networks has been subject of significant recent research, damages on the network infrastructure due to the direct or indirect impacts...
We formalize a BBU placement problem for C-RAN infrastructures based on WDM aggregation networks, considering both OTN and Overlay for fronthaul transport. Numerical simulations obtained over realistic instances show that Overlay enables higher BBU consolidation (fewer BBU hotel sites).
Hybrid circuit/packet networks where circuit and packet networks coexist are becoming attractive to support future Internet applications. They support both packet/ IP services and circuit/wavelength services. Packet services include traditional data services such as VPN, VoIP, and email, while dynamic circuit services include end-to-end bandwidth-intensive applications such as terascale science experiments...
We investigate a computationally-efficient multipath routing scheme for survivable provisioning in Mixed-Line-Rate networks. Our approach exploits heterogeneity of multiple rates and guarantees that a specified fraction of the requested bandwidth survives any single-link failure.
In IP-over-WDM networks, wavelength services (circuits) are often protected by dedicated backup circuits. The upcoming deployment of 100G transmission systems will induce huge under-utilization of backup resources. Network utilization can be boosted by loaning the idle backup circuits to preemptible IP/packet services. Unfortunately, in the event that a backup circuit used for IP services fails, all...
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