Optimized deployment method of service function chain in 5G mobile network

Abstract

The invention discloses an optimized deployment method of a service function chain in a 5G mobile network, belonging to the field of mobile communication. According to the method, when server resources and bandwidth resources of an underlying network are allocated to each service function chain request coming dynamically, three different mapping solutions are brought up due to consideration of deployment manners of a VNF combination policy, a virtual reuse policy and a temporary chain policy in deployment. The three different mapping solutions are as follows: minimizing the resource cost, wherein the highest mapping cost of each virtual chain that a service provider can accept is limited in deployment; minimizing the path length of the service function chain, wherein the highest mapping cost of each virtual network function that the service provider can accept is limited in deployment; and fairly optimizing and calculating the resource cost and chain resource cost by using a gender war game theory model. All the three solutions of the invention can minimize the total mapping expenditure as much as possible while improving the mapping success rate of the service function chain request and the resource use ratio of the underlying network.

Description

technical field [0001] The invention belongs to the field of mobile communications, and in particular relates to the optimal deployment of service function chains in 5G mobile networks. Background technique [0002] With the substantial growth of wireless traffic and services, the fourth generation (4G) will not be able to meet future network requirements, thus promoting the research of the fifth generation (5G) mobile wireless network to meet the great challenges of future diversified and differentiated services . [0003] With the explosive growth of mobile wireless traffic, mobile operators are considering the use of cloud computing to extend their services and handle the huge increase in mobile data traffic. In traditional telecommunication networks, network functions or middle boxes (such as packet data network gateways, service gateways, firewalls, content filters, proxy servers, WAN optimizers, intrusion detection systems, and intrusion prevention systems) are separa...

AI Technical Summary

Problems solved by technology

Although this method can realize the placement of virtual network functions, it is proposed for virtual network or joint cloud, without considering the characteristics and related constraints of 5G network, so this method is not suitable for 5G mobile network

However, for those placement / deployment solutions for virtual network functions or service function chains suitable for 5G mobile networks, only the deployment of virtual network functions (such as packet data network gateways and service gateways) in wireless access networks is considered, and there is no Consider the deployment of virtual network functions such as firewalls, content filters, proxy servers, WAN optimizers, intrusion detection systems, and intrusion prevention systems for core and data center networks

For example, the number of service gateways that need to be relocated and the length of the path are compromised by using the bidding Nash theory. Although the placement of virtual network functions in the 5G mobile network can be realized, only the deployment of virtual network functions in wireless access networks is considered. However, they do not consider the deployment of virtual network functions in the core network and data center network

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