name: PDN
full_form: Packet Data Network
context: request refers to an existing PDU Session switching between 3GPP access and non-3GPP access or to a PDU Session handover from an existing PDN connection in EPC. If the request refers to an existing PDN connection in EPC, the S-NSSAI is set as described in clause 5.15.7.2 of TS 23.501 [2] [Rel-15, TS 23.402,clause 7.9.2-1] PDN GW initiated Resource Allocation Deactivation with GTP on S2b This procedure can be used to deactivate a dedicated bearer or deactivate all bearers belonging to a PDN address, for example, due to IP CAN session modification requests from the PCRF or due to handover from Non-3GPP to 3GPP access. If the default bearer belonging to a PDN connection is deactivated, the PDN GW deactivates all bearers belonging to the PDN connection. When it is performed for a handover, the connections associated with the PDN address are released, but the PDN address is kept in the PDN GW. 1. The PDN GW initiated Resource Allocation Deactivation can also be triggered during handovers
description: A Packet Data Network (PDN) is a type of network that provides packet-switched data transmission services, enabling communication between devices over the internet. In the context of 3GPP specifications, PDNs are used to describe networks that support packet data transmission, such as EPC (Evolved Packet Core) and 5GS (5G System).
explanation: The abbreviation 'PDN' is classified as a Network based on its role in providing packet data transmission services within the context of 3GPP specifications. The full form 'Packet Data Network' further clarifies its function, highlighting its relevance to network operations.
section_title: 11.8.6Inter-system mobility between untrusted Non-3GPP and 3GPP system/Handover from EPC/ePDG to 5GS/ UE in 5GMM-DEREGISTERED and EMM-DEREGISTERED states
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