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NFV is promising to lower the network operator’s capital expenditure and operational expenditure by replacing proprietary hardware-based network equipment with software-based VNFs that can be consolidated into telecom clouds. In particular, NFV provides an efficient way to deploy network services using SFCs that consist of a set of VNFs interconnected by virtual links. A practical but theoretically...
To provide resilient services over an optical network, we first enhance virtual network representing a service request into a failure dependent and enhanced VN (FD-EVN), then map FD-EVN to the optical network with shared protection.
Reliable multicast in wireless networks has been well studied in the sense to solve the feedback implosion issue, which, however, can not reduce the number of retransmissions in order to recover all lost packets at receivers. Most recently, it has been proposed to use network coding for reliable multicast in wireless LANs to reduce the number of retransmissions. In this paper, we propose two new models...
Recently, mobility-assisted data collection has been proposed to prolong network lifetime. However, the upper bound of throughput capacity in such mobility-assisted data collection models has not been studied. In this work, we first derive the upper bound of throughput capacity when a mobile sink is available for data collection. Given the traveling speed of the mobile sink and the required delay...
This work studies optical-layer protection design in a WDM mesh network given that, a dual-homing infrastructure is implemented at the IP layer. The problem is formulated as an integer linear program and solved using CPLEX.
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