name: RAU
full_form: Routing Area Update
context: or SGSN, will reply to the UE's LAU Request or RAU Request with an unencrypted LAU Accept or RAU Accept. The false BS will not send a Ciphering Mode Command, hence the communication will remain unencrypted. The UE will believe to have successfully registered to network VN. The false BS can then start to broadcast unprotected warning messages, which the UE will display to the user according to assumption (A2). Attack over any access network technology using Limited Service State (LSS): The false BS, emulating also the behaviour of an MSC/VLR or SGSN, will reply to the UE's LAU Request or RAU Request with an unencrypted LAU Reject or RAU Reject. As the UE does not find any other acceptable network around, the UE will be in LSS. The false BS can then start broadcasting unprotected warning messages, which the UE will display to the user according to assumption (A5).
description: The Routing Area Update (RAU) is a procedure used by the User Equipment (UE) to update its routing area information with the network. This involves sending an RAU Request to the Serving GPRS Support Node (SGSN) or Mobility Management Entity (MME), which then responds with an RAU Accept or Reject message.
explanation: The context describes a specific procedure called Routing Area Update (RAU) that is part of mobile network operations. It outlines the steps involved in this procedure, making it clearly identifiable as a procedure.
section_title: 6.1.2	PWS Security circumvention attack
biotag_Context: O,O,O,O,O,O,O,O,O,O,B-Procedure,O,O,O,O,O,O,O,B-Procedure,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Device,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,B-Device,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-State,I-State,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Procedure,O,O,O,O,O,B-Message,O,B-Procedure,O,O,O,B-Device,O,O,O,O,O,O,O,O,O,B-Device,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,B-Device,O,O,O,O,O,O,O,O,O
biotag_Description: O,B-Procedure,I-Procedure,I-Procedure,O,O,O,O,O,O,O,B-Device,I-Device,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Procedure,O,O,O,B-Network Function,I-Network Function,I-Network Function,I-Network Function,O,O,B-Network Function,I-Network Function,I-Network Function,O,O,O,O,O,O,B-Procedure,O,O,B-Message,O