Question: What happens to the association between the old temporary identity (TMSIo) and the IMSI when the network receives an acknowledgement from the user after a successful allocation of a new temporary identity (TMSIn)?
Option 1: The association is deleted, allowing the released temporary identities to be allocated to other users.
Option 2: The association remains unchanged, and the old temporary identity continues to be associated with the IMSI.
Option 3: The network updates the association between the old temporary identity and the IMSI to reflect the new temporary identity.
Option 4: The association is temporarily suspended until the next TMSI reallocation procedure.
Explanation: When the network receives an acknowledgement from the user after a successful allocation of a new temporary identity (TMSIn), it deletes the association between the IMSI and any TMSI, including the old temporary identity (TMSIo). This allows the released temporary identities to be allocated to other users.