The provision of services by more than one operator over a common network infrastructure, as enabled by 5G network slicing, is analyzed. Two business models to be implemented by a network operator, who owns the network, and a virtual operator, who does not, are proposed. In one business model, named \emph{strategic}, the network operator provides service to its user base and the virtual operator provides service to its user base and pays a per-subscriber fee to the network operator. In the other business model, named \emph{monopolistic}, the network operator provides service to both user bases. The two proposals are analyzed by means of a model that captures both system and economic features. As regards the systems features, the slicing of the network is modeled by means of a Discriminatory Processor Sharing queue. As regards the economic features, the incentives are modeled by means of the user utilities and the operators' revenues; and game theory is used to model the strategic interaction between the users' subscription decision and the operators' pricing decision. In both business models, it is shown that the network operator can be provided with the appropriate economic incentives so that it acquiesces in serving the virtual operator's user base (monopolistic model) and in allowing the virtual operator to provide service over the network operator's infrastructure (strategic model). From the point of view of the users, the strategic model results in a higher subscription rate than the monopolistic model.

翻译：本文分析了通过5G网络切片技术实现多个运营商在共享网络基础设施上提供服务的可行性。提出了两种由拥有网络的网络运营商与不拥有网络的虚拟运营商实施的商业模式。在第一种名为**战略型**的商业模式中，网络运营商为其用户群提供服务，虚拟运营商则为其用户群提供服务并向网络运营商支付每用户费用。在第二种名为**垄断型**的商业模式中，网络运营商同时为两个用户群提供服务。通过一个同时涵盖系统特征与经济特征的模型对两种方案进行分析。在系统特征方面，网络切片通过区分式处理器共享队列进行建模；在经济特征方面，通过用户效用和运营商收益对激励进行建模，并运用博弈论来刻画用户订阅决策与运营商定价决策之间的策略互动。研究表明，在两种商业模式中，均可为网络运营商提供适当的经济激励，使其愿意为虚拟运营商的用户群提供服务（垄断型模式），并允许虚拟运营商在其基础设施上提供服务（战略型模式）。从用户视角看，战略型模式能实现比垄断型模式更高的用户订阅率。