name: UEA
full_form: UMTS Encryption Algorithm
context: If ciphering has been started when an intersystem handover occurs from UTRAN to GSM BSS, the necessary information (e.g. Kc, supported/allowed GSM ciphering algorithms) is transmitted within the system infrastructure before the actual handover is executed to enable the communication to proceed from the old RNC to the new GSM BSS, and to continue the communication in ciphered mode. The RNC may request the MS to send the MS Classmarks 2 and 3 which include information on the GSM ciphering algorithm capabilities of the MS. This is necessary only if the MS Classmarks 2 and 3 were not transmitted from UE to UTRAN during the RRC Connection Establishment. The intersystem handover will imply a change of ciphering algorithm from a UEA to a GSM A5. The GSM BSS includes the selected GSM ciphering mode in the handover command message sent to the MS via the RNC. The integrity protection of signalling messages is stopped at handover to GSM BSS.
description: The UMTS Encryption Algorithm (UEA) is a cryptographic technique used in the Universal Mobile Telecommunications System (UMTS) for securing data transmission between the User Equipment (UE) and the network. It is one of the encryption algorithms employed in the UMTS system to protect user data and signaling information from unauthorized access. The use of UEA ensures confidentiality and integrity of communications within the UMTS network.
explanation: UEA is classified under Technology because it refers to a specific standard for encrypting data in the UMTS system, which is a part of the broader 3GPP telecommunications specifications. It plays a crucial role in maintaining the security of mobile communications.
section_title: 6.8.4 Intersystem handover for CS Services â from UTRAN to GSM BSS
biotag_Context: O,O,O,O,O,O,O,O,O,O,O,B-Network,O,B-Network,O,O,O,O,O,O,O,B-Network,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-Network,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,B-Parameter,O,O,O,B-Parameter,O,O,O,O,O,O,O,O,O,B-Network,O,O,O,O,O,O,O,O,O,O,O,O,B-Parameter,O,O,O,O,O,O,O,O,B-Device,O,B-Network,O,O,B-Protocol,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Miscellaneous,O,O,B-Network,O,O,B-Network,B-Network Function,O,O,O,B-Network,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,B-Network,O
biotag_Description: O,B-Miscellaneous,I-Miscellaneous,I-Miscellaneous,O,O,O,O,O,O,O,O,B-Miscellaneous,I-Miscellaneous,I-Miscellaneous,I-Miscellaneous,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-Technology,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Miscellaneous,O,O,O,O,O,O,O,O,B-Technology,O