Traffic Detection Function (TDF) is a network function that enforces traffic policies in real-time based on either pre-set rules or rules determined dynamically by the policy control rules function (PCRF) engine.
TDF was introduced together with Sd reference point as means for traffic management in the Release 11 3GPP specifications using Layer-7 traffic identification.
TDF is deployed to manage the complexities in managing data services and addressing the demand for personalization and service differentiation.
TDF provides Communication Service Providers an opportunity to capitalize on analytics for traffic optimization, charging and content manipulation.