Node re-distribution method in wireless network virtualization

Abstract

The invention requests for protecting a node re-distribution method in wireless network virtualization. The node re-distribution method comprises the following steps of: analyzing load conditions of various nodes in a wireless physical network at first, so that whether a re-distribution mechanism needs to be started or not can be judged; when the re-distribution mechanism needs to be started, selecting virtual nodes to be re-distributed preferentially according to the resource quantities requested by the virtual nodes and the influence degree InI of the virtual nodes; and finally, for the determined virtual nodes, re-distributing target physical nodes. The node re-distribution method disclosed by the invention aims to realize load balancing and increase the utilization rate of bottom physical resources, the receptance of virtual network requests and the average yield of the physical network through virtual node re-distribution.

Description

technical field [0001] The invention aims at the research of the resource allocation algorithm in the wireless network virtualization, and studies the node redistribution method in the wireless network virtualization. Background technique [0002] Network virtualization technology separates resource management in the network from network service management, that is, divides the traditional service provider (Internet Service Provider, ISP) into an infrastructure provider (Infrastructure Provider, InP) and a network service provider (Service Provider, SP). ). The SP is responsible for leasing resources from the InP, creating a virtual network, and providing network services to its end users, while the InP is responsible for building and maintaining the underlying physical infrastructure. Network virtualization technology allows multiple virtual network requests to share the same underlying physical network. How to effectively and reasonably allocate resources for different vi...

AI Technical Summary

Problems solved by technology

It is precisely because of this dynamic that 1) the load of physical nodes or links is unbalanced, which reduces the success rate of mapping and resource utilization, thereby reducing the average income of the physical network; 2) the underlying physical network has sufficient resources, However, due to geographical constraints, the mapping cannot be completed, resulting in a waste of physical resources.

The problem to be solved by the present invention is: the dynamic arrival and departure of virtual network requests will cause some nodes or links in the underlying physical network to be unbalanced in load, thereby leading to a decline in the QoS of the physical network and reducing the number of accepted virtual requests , reducing the income of InP; when the virtual request arrives, the underlying physical network has sufficient resources, but the mapping cannot be completed due to geographical constraints, resulting in a waste of physical resources

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