Network Function Virtualization in Dynamic Networks: A Stochastic Perspective
Cheng, X; Wu, Y; Min, G; et al.Zomaya, A
Date: 24 September 2018
Article
Journal
IEEE Journal on Selected Areas in Communications
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Publisher DOI
Abstract
As a key enabling technology for 5G network
softwarization, Network Function Virtualization (NFV) provides
an efficient paradigm to optimize network resource utility for
the benefits of both network providers and users. However,
the inherent network dynamics and uncertainties from 5G
infrastructure, resources and applications are ...
As a key enabling technology for 5G network
softwarization, Network Function Virtualization (NFV) provides
an efficient paradigm to optimize network resource utility for
the benefits of both network providers and users. However,
the inherent network dynamics and uncertainties from 5G
infrastructure, resources and applications are slowing down
the further adoption of NFV in many emerging networking
applications. Motivated by this, in this paper, we investigate
the issues of network utility degradation when implementing
NFV in dynamic networks, and design a proactive NFV solution
from a fully stochastic perspective. Unlike existing deterministic
NFV solutions, which assume given network capacities and/or
static service quality demands, this paper explicitly integrates
the knowledge of influential network variations into a twostage
stochastic resource utilization model. By exploiting the
hierarchical decision structures in this problem, a distributed
computing framework with two-level decomposition is designed
to facilitate a distributed implementation of the proposed model
in large-scale networks. The experimental results demonstrate
that the proposed solution not only improves 3∼5 folds of network
performance, but also effectively reduces the risk of service
quality violation.
Computer Science
Faculty of Environment, Science and Economy
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