name: TDF
full_form: Traffic Detection Function
context: Summary based on the input provided by Huawei in SP-170520. This Work Item separates the S/P-GW and the TDF functionality into user plane functions and control plane functions. This is provided as a solution to the ever-growing data traffic while maintaining a low latency for services such as social networks or web browsing. In addition, a flexible placement of user plane functions (e.g. centrally or closer to the RAN) is enabled, while the control plane functions could still remain centralized and continue to support the interfaces to the other network entities (like MME, PCRF, Charging Systems). TS 23.214 [1] specifies the stage 2 level functionality for control and user plane separation of EPC's SGW, PGW and TDF. Updates to procedures in other specifications (TS 23.401 [2], TS 23.203 [3], TS 23.402 [4] and TS 23.060 [5]) are described therein as well. The overall functionality provided by the SGW, PGW and TDF is not changed and none of the other EPC entities is affected, which
description: The Traffic Detection Function (TDF) is a network function responsible for detecting and managing traffic in the Evolved Packet Core (EPC) network. It plays a crucial role in separating control plane functions from user plane functions, enabling flexible placement of user plane functions while maintaining centralized control plane functions.
explanation: The context explicitly mentions TDF as part of the EPC nodes, specifically highlighting its functionality and separation into user plane and control plane functions. This indicates that TDF is a Network Function within the EPC architecture.
section_title: Control and User Plane Separation of EPC nodes
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