As an important future network architecture, virtual network
architecture has received extensive attention. Virtual network embedding
(VNE) is one of the core services of network virtualization (NV). It
provides solutions for various network applications from the perspective
of virtual network resource allocation. The Internet aims to provide
global users with comprehensive coverage. The network function requests
of hundreds of millions of end users have brought great pressure to the
underlying network architecture. VNE algorithm can provide effective
support for the reasonable and efficient allocation of network
resources, so as to alleviate the pressure off the Internet.
At present, a distinctive feature of the Internet environment is that
the quality of service (QoS) requirements of users are differentiated.
Different regions, different times, and different users have different
network function requirements. Therefore, network resources need to be
reasonably allocated according to users' QoS requirements to avoid the
waste of network resources.
In this book, based on the analysis of the principle of VNE algorithm,
we provide a VNE scheme for users with differentiated QoS requirements.
We summarize the common user requirements into four categories: security
awareness, service awareness, energy awareness, and load balance, and
then introduce the specific implementation methods of various
differentiated QoS algorithms. This book provides a variety of VNE
solutions, including VNE algorithms for single physical domain, VNE
algorithms for across multiple physical domains, VNE algorithms based on
heuristic method, and VNE algorithms based on machine learning method.
