![]() If the UE's TIN indicates "GUTI" or "RAT-related TMSI" and the UE holds a valid GUTI then the old GUTI indicates this valid GUTI. IMSI shall be included if the UE does not have a valid GUTI or a valid P TMSI available. The old GUTI may be derived from a P TMSI and RAI. ![]() The UE initiates the Attach procedure by the transmission, to the eNodeB, of an Attach Request ( IMSI or old GUTI, last visited TAI (if available), UE Core Network Capability, UE Specific DRX parameters, Attach Type, ESM message container (Request Type, PDN Type, Protocol Configuration Options, Ciphered Options Transfer Flag), KSIASME, NAS sequence number, NAS-MAC, additional GUTI, P-TMSI signature) message together with RRC parameters indicating the Selected Network and the old GUMMEI. ![]()
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