Policy Charging and Rules Function
Mobile Communications Service Providers (CSPs) are working to adapt their network infrastructures to enable them to better track and monetize the services their subscribers are using over their infrastructure. A provider’s ability to exert some form of control over the user experience via the “control plane” of the network, using techniques such as deep packet inspection (DPI) and the Policy Charging and Rules Function (PCRF) is critical to this capability.
An increasing number of providers and the equipment manufacturers that work closely with them are integrating technologies such as Procera’s Network Application Visibility Library (NAVL), an OEM DPI engine providing Layer 7 application classification, to enable full traffic visibility. They can then apply the control mechanisms or their choice to positively or negatively affect the performance of specific applications, depending on where they fit in their service offering and billing structures.