name: CK'
full_form: replacement CK for ait interface security to withhold CK from the visited network
context: signature IE. The MME shall transfer UE's UTRAN and GERAN security capabilities and CK' || IK' with KSI equal to the value of the eKSI associated with the current EPS security context to SGSN with Context Response/SGSN Context Response message. The MME and UE shall derive CK' and IK' from the KASME and the NAS uplink COUNT value corresponding to the truncated NAS-token received by the MME from SGSN as specified in clause A.13. Keys CK' and IK' and KSI sent from the MME shall replace all the UTRAN PS key parameters CK, IK, s KSI in the target SGSN if any. Keys CK' and IK' and the KSI shall replace all the currently stored UTRAN PS key parameters CK, IK, KSI values on both USIM and ME. The handling of STARTPS shall comply with the rules in TS 25.331 [24]. The UE may set the STARTPS value to 0 if it is done before establishment of the RRC connection. The ME shall use CK' and IK' to derive the GPRS Kc using the c3 function specified in TS 33.102 [4]. The ME shall assign the eKSI value
description: CK' is a security parameter used in the UTRAN and GERAN networks for deriving keys and authenticating user equipment (UE). It is part of the EPS security context and ensures secure communication between the UE and the network.
explanation: CK' is explicitly described as a security parameter used for key derivation and authentication within the UTRAN and GERAN networks, placing it firmly within the category of security parameters.
section_title: 9.1.1	RAU procedures in UTRAN
biotag_Context: O,O,O,B-Network Function,O,O,O,B-Network,O,B-Network,O,O,O,B-Parameter,O,B-Parameter,O,B-Parameter,O,O,O,O,O,O,B-Parameter,O,O,O,O,B-Network,O,O,O,B-Network Function,O,O,O,O,O,O,O,B-Network Function,O,B-Device,O,O,B-Parameter,O,B-Parameter,O,O,B-Parameter,O,O,B-Protocol,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,B-Network Function,O,O,O,O,O,O,B-Parameter,O,B-Parameter,O,B-Parameter,O,O,O,B-Network Function,O,O,O,O,B-Network,B-Mode,O,O,O,O,O,B-Parameter,O,O,O,B-Network Function,O,O,O,B-Parameter,O,B-Parameter,O,O,B-Parameter,O,O,O,O,O,O,B-Network,B-Mode,O,O,O,O,B-Parameter,O,O,O,B-Device,O,O,O,O,O,O,O,O,O,O,O,O,B-Specification,O,O,O,B-Device,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Protocol,O,O,B-Network Function,O,O,B-Parameter,O,B-Parameter,O,O,O,B-Technology,B-Parameter,O,O,O,O,O,O,B-Specification,O,O,O,B-Network Function,O,O,O,B-Parameter,O
biotag_Description: B-Parameter,O,O,O,O,O,O,O,B-Network,O,B-Network,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network,O,O,O,O,O,O,O,O,B-Device,O,O,O