M.2 Features of the USIM dedicated for IOPS

31.1023GPPCharacteristics of the Universal Subscriber Identity Module (USIM) applicationRelease 17TS

The USIM dedicated for IOPS may be implemented as a single USIM on a UICC or as a secondary USIM application together with a normal USIM on one UICC. The USIM for IOPS is a regular USIM application and contains all mandatory EFs for a USIM and may also include any of the optional EFs defined for a USIM.

The USIM dedicated for IOPS nevertheless has some specifics:

– As specified in 3GPP TS 23.401 [69] Annex K, the Access Control Class in EF_ACC is set to either ’11’ or ’15’. The specific values for the Access Control Class prevent UEs with different Access Control Classes from trying to attach to the IOPS network.

– The entry for the USIM dedicated for IOPS in EF_DIR has a label starting with ‘USIM-IOPS’.

In case multiple local HSSs are to be supported, The USIM should also support:

– The AMF (Authentication Management Field) mechanism as described in 3GPP TS 33.401 [52] Annex F.4.1 is supported.

– An Operator specific mechanism to derive local HSS individual keys is supported (see 3GPP TS 33.401 [52] Annex F.4).

NOTE: The mechanism to derive local HSS specific keys in the USIM dedicated for IOPS is specific to an Operator and needs to be agreed for the local HSS and the USIM. One example mechanism is described in 3GPP TS 33.401 [52] Annex F.4.2.