关键词: 5G-C-RAN, 无线网络虚拟化, 服务功能链（SFC）, 网络效用, 遗传算法

Abstract: To solve the problem of Service Function Chain（SFC） deployment in 5G wireless virtualized network, guarantee the diversified network performance demand brought by diversified services, and improve the joint profit of Infrastructure Provider（InP） and Mobile Virtual Network Operator（MVNO）, a SFC deployment algorithm based on network utility maximization is proposed. In the consideration of the architectural characteristics of 5G-C-RAN, and jointly considering the maximum tolerance of end-to-end delay, minimum service rate requirements as well as computing and link resource limits of InP, and considering the impact on the network performance from difference SFC deployment strategies, using commercial model, the utility model is established to maximize the joint profit of InP and MVNO. Finally, it’s solved by Genetic Algorithm and Matlab function Linprog. The simulation results show that the proposed method can improve the joint total profit of InP and MVNO, and guarantee the network performance of MVNO at the same time.

Key words: 5G-C-RAN, wireless virtualized networks, Service Function Chain（SFC）, network utility, Genetic Algorithm