name: RAND
full_form: Random challenge
context: Figure 6.4.4.2-1: Illustration of UE and HE synchronization failure detection handling 1. Authentication vector is generated during authentication procedure in UDM/ARPF. 2. Nudm_UEAuthentication_Get Request carrying the AUTN, RAND value in 5G HE AV from UDM/ARPF to AUSF. 3. Nausf_UEAuthentication_Authenticate Response carries the AUTN, RAND value in 5G SE AV from AUSF to AMF/SEAF. 4. AMF/SEAF sends AUTN, RAND value to UE in NAS Authentication Request message. 5. After the receipt of Authentication Request message, when there is no synchronization failure, the UE computes an answer as described in TS 33.501 [2]. If, however the USIM detects a synchronization failure, it checks whether the current RAND value is stored on the USIM as a received RAND value. If this is not the case, it stores the RAND value in the USIM as a received RAND value and computes AUTS as specified in TS 33.102 [3]. Otherwise, it sets AUTS to all zeros. NOTE: According to this, only RAND values of challenges that
description: RAND is a random challenge value generated by the UDM/ARPF during the authentication process. It is used to authenticate the UE (User Equipment) with the network.
explanation: The text describes RAND as a 'random challenge' generated for authentication, placing it within the category of parameters crucial for specific telecommunications processes.
section_title: 6.4.4.2	Solution details
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biotag_Description: B-Parameter,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Device,O,O,O,O,O