基于电力业务时延敏感度和服务可靠性的虚拟网络映射方法

Virtual network mapping method based on power service delay sensitivity and service reliability

在5G智能电网的应用场景下,针对电力控制类业务对时延、可靠性要求高等问题,文中首先基于时延敏感度和可靠属性参数对业务请求排序,以缩短虚拟网络请求的等待时间;然后,将网络拓扑属性和相邻节点重要性作为排序参数,对节点进行排序,避免了映射后链路负载不均衡的情况;最后,在链路映射层,提出了基于遗传算法的链路映射算法,求得最优映射链路。仿真结果表明,所提方法保障了电力业务的时延和可靠性需求,同时有效提高了虚拟映射请求接收率。

In the application scenario of 5G smart grid,aiming at the high requirements on delay and reliability in power control class,firstly,the service requests are sorted based on delay sensitivity and reliability attribute parameters to shorten the waiting time of virtual network requests.Then,the network topology attributes and the importance of adjacent nodes are used as sorting parameters to sort the nodes,avoiding the unbalanced load for the mapped links.Finally,at the link mapping layer,a link mapping algorithm based on the genetic algorithm is proposed and the optimal mapped link is found.Simulation results show that the method can guarantee the delay and reliability requirements of power service,thus improving the reception rate of virtual mapping requests.