US Patent 10057775 Virtualized policy and charging system

A network system for providing one or more services to one or more end-user devices communicatively coupled to the network system over a wireless access network, the network system comprising: a policy enforcement function, a first policy element, a second policy element, and a network element, wherein the network element is communicatively coupled to the policy enforcement function, the first policy element, and the second policy element, and wherein the network element is configured to communicate first policy information between the policy enforcement function and the first policy element, and communicate second policy information between the first policy enforcement function and the second policy element.