name: SQNMS
full_form: Sequence number counter maintained in the USIM
context: the home network UDM/ARPF/SIDF, after SUCI de-concealment, SUPI, Conc(SQNMS) and RANDSQN are retrieved. Further, SQNMS is retrieved from Conc(SQNMS) (similar to step 1 of TS 33.102 clause 6.3.5). The Home Environment temporarily stores SQNMS and RANDSQN is deleted. UDM/ARPF retrieves with SUPI the existing SQNHE and generates an authentication vector AV. 4. At UE, for a success case, if there is neither a MAC failure nor a synchronization failure, the Authentication response message is sent back to AMF/SEAF. At UDM, since the SQNMS and SQNHE are already aligned, the temporarily stored SQNMS in UDM is deleted. 5. At UE, for a failure case, if there is synchronization failure, then pre-agreed AUTS or freshly generated dummy AUTS value is sent. Since UDM already holds the SQNMS temporarily till 5G AKA is finalized, AUTS received in the failure message is ignored, i.e. SQNMS is not needed to be sent in the failure message. When Authentication failure message is received by UDM, a new AV
description: Sequence number counter maintained in the USIM (Universal Subscriber Identity Module), used for authentication and security purposes in the 5G network.
explanation: The text explicitly states that SQNMS is a sequence number counter within the USIM, which is directly involved in authentication and security functions within the 5G network. This clearly classifies it as a parameter crucial for network operation.
section_title: 6.4.7.2	Solution details
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biotag_Description: B-Parameter,I-Parameter,I-Parameter,I-Parameter,I-Parameter,I-Parameter,I-Parameter,O,O,B-Parameter,O,O,O,O,O,O,O,O,O,B-Technology,O