Mapping method of wireless virtual network

Abstract

The invention relates to a mapping method of a wireless virtual network, and belongs to the technical field of the communication. The method comprises the following steps: selecting an appropriate node and path in a underlying physical network to satisfy a resource demand of a request under the situation that a service provider sends a virtual network mapping request; analyzing the virtual network request and the local or overall topology attribute of the node in the underlying physical network, ordering the priorities of the nodes in the mapping process by combining with the network local available resource, and selecting a bearing path with small interference and sufficient source for a virtual machine by simultaneously considering the interference time-varying behavior of the wireless link and the link load pressure distribution; therefore, the underlying network resource can be better utilized, the balance of the mapping resource distribution is improved, the construction success rate of the entire virtual network request can be improved, and the network benefit-to-cost ratio is increased.

Description

technical field [0001] The invention belongs to the technical field of communication, and relates to a virtual network mapping method in a wireless network environment. Background technique [0002] In recent years, with the rapid development of the Internet, network virtualization has received extensive attention. In a network virtualization environment, infrastructure providers manage and operate the underlying physical network, and service providers can lease network resources from infrastructure providers and create virtual network. However, the problem of allocating the underlying resources of the infrastructure provider for the request of the service provider's virtual network, that is, the problem of virtual network mapping, is one of the main challenges faced by network virtualization. [0003] Most of the existing virtual network mapping methods focus on the local resource attributes of nodes such as node CPU resources and egress link bandwidth resources, ignoring ...

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Problems solved by technology

However, the problem of allocating the underlying resources of the infrastructure provider for the service provider's virtual network request, that is, the problem of virtual network mapping is one of the main challenges faced by network virtualization

[0003] Most of the existing virtual network mapping methods focus on the local resource attributes of nodes such as node CPU resources and egress link bandwidth resources, ignoring further research on attributes such as network connection information and available bandwidth resources between nodes, which objectively limits Improvement of Mapping Efficiency of Virtual Network Mapping Algorithm

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