name: HA
full_form: Home agency
context: HA assignment. Under this case, the UE shall derive the MN-HA key using the ALL-ZERO-ONE-ADDR as the HA-IPv4 address and use this key for deriving MN-HA Authentication Extension and send in the RRQ. Then the HA informs this to the 3GPP AAA server in the AAA protocol message. In response from the 3GPP AAA server, the HA will receive RRQ-MN-HA-KEY that is calculated based on ALL-ZERO-ONE-ADDR address and also MN-HA key that is calculated based on HA IP address. The HA shall use the RRQ-MN-HA-KEY for validation of MN-HA Authentication Extension in the received RRQ. The HA then use MN-HA key for deriving RRP MN-HA Authentication Extension and sends the HA IP address as part of the RRP message. The UE shall recalculate the MN-HA key using the HA IP address received in the RRP and use this key for MN-HA Authentication Extension validation for the RRP. If the MN-HA authentication extension is valid, the new MN-HA key shall be in effect. The derivation of FA-RK and MN-FA mobility keys are
description: The Home Agent (HA) is a network function responsible for managing mobile node (MN) registrations, authentications, and mobility management in the context of Mobile IPv4. It plays a crucial role in maintaining connectivity and session continuity as the MN moves across different networks.
explanation: Based on its responsibilities for key derivation, authentication extension validation, and mobility management for mobile nodes, the Home Agent is classified as a Network Function.
section_title: 9.2.1.2.2	MIPv4 Key Derivation
biotag_Context: B-Network Function,O,O,O,O,O,B-Device,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,B-Organization,B-Protocol,I-Protocol,O,O,B-Service,O,O,O,O,O,O,B-Organization,B-Service,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,B-Protocol,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,B-Message,O,O,O,O,O,O,B-Network Function,B-Protocol,O,O,O,O,O,B-Message,O,O,B-Device,O,O,O,O,O,O,O,B-Network Function,B-Protocol,O,O,O,O,B-Message,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O
biotag_Description: O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O