name: EIR
full_form: Equipment Identity Register
context: The Equipment Identity Register (EIR) is used in the existing 3GPP systems to check whether the device identified by the equipment identifier (e.g., IMEI) is reported stolen. If it is, then the network may deny service to these devices. However, in the existing 3GPP systems, the reported equipment identifier is not authenticated. A malicious user may be able to report an equipment identifier that is not reported stolen, thereby bypassing the EIR check by the network. The high-level call flow below shows how the equipment identifier authentication solution can be used with EIR to improve the security of the EIR procedures. Figure 5.2.4.10.2-2: EIR check after equipment identifier authentication NG-UE performs attach and equipment identifier authentication as shown in steps 1-8 of Figure 5.2.4.10.2-1. CP-CN decides to perform EIR check and sends Identity Check Request message including the authenticated equipment identifier. CP-CN receives result of the EIR authorization check. If the
description: The Equipment Identity Register (EIR) is a network function responsible for storing and managing information about mobile device identities, such as IMEI numbers. It prevents stolen devices from accessing the network by verifying the authenticity of device identities.
explanation: The EIR operates within the telecommunications network infrastructure and performs a critical function in authentication and security. Its role in managing device identities and preventing unauthorized access aligns with the definition of a Network Function.
section_title: 5.2.4.10.2.3 	Use of Equipment Identifier Authentication with EIR
biotag_Context: O,B-Network Function,I-Network Function,I-Network Function,O,O,O,O,O,O,B-Organization,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-Organization,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,O,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-Network Function,O,O,O,B-Network Function,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,B-Parameter,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O
biotag_Description: O,B-Network Function,I-Network Function,I-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Parameter,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O