Resource virtual-real mapping method for virtual network construction in multi-hop network

Abstract

The invention provides a resource virtual-real mapping method for virtual network construction in a multi-hop network, and the method comprises the following steps: S1, abstracting a physical network, and building initialized virtual network topological structures which are connected pairwise; S2, optimizing the virtual network topology through virtual network evaluation indexes by adopting a small world theory to obtain an optimized topology connection relationship; S3, endowing each link of the virtual network topology structure with equal communication resources in sequence, and allocating different communication resources to each link according to the parallel service transmission number for the remaining resources; S4, completing the end-to-end virtual link planning by adopting a path selection method based on reinforcement learning, and mapping virtual links between virtual network user nodes into actual links. According to the method, the link utilization rate can be improved and the network bandwidth overhead can be reduced under the condition that the requirement of congestion-free communication among multiple users is met.

Description

technical field [0001] The present invention relates to the field of communication technology, and more specifically, relates to a resource virtual-real mapping method for virtual network construction in a multi-hop network. Background technique [0002] At present, due to the complexity and changeability of the communication environment, the large number of communication nodes, and the complexity of resource management, the virtual network is generally used to effectively manage the complex physical network. Network virtualization is to build a virtual network on the existing network to meet the needs of diversified services under the premise of retaining the existing Internet architecture; Virtual networks are an important paradigm for sharing underlying physical resource networks. [0003] Virtual network mapping is the key to instantiating virtual networks and realizing network resource allocation. The virtual network mapping algorithm for differentiated service reques...

AI Technical Summary

Problems solved by technology

[0011] The present invention solves the problem that most of the traditional virtual network construction methods are based on the combination of virtual links, and realizes the construction of the network virtual network form by building virtual links between two users, resulting in high complexity, many redundant paths, and low resource utilization and other problems, a virtual-real resource mapping method for virtual network construction in a multi-hop network is provided, which can improve link utilization and reduce network bandwidth overhead while satisfying the non-congestion communication requirements among multiple users

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