User equipment (ue) and communication control method performed by ue

A User Equipment (UE) comprising:

• a transmission and/or reception unit;
• and
• a storage unit, wherein
• in a case that
• the transmission and/or reception unit receives Single Network Slice Selection Assistance Information (S-NSSAI) included in rejected Network Slice Selection Assistance Information (NSSAI) included in an Extended rejected NSSAI IE,
• one or more mapped S-NSSAI for the S-NSSAI included in pending NSSAI are stored in the storage unit, and
• the Extended rejected NSSAI IE includes all of the one or more mapped S-NSSAI,
• the S-NSSAI is removed from the pending NSSAI stored in the storage unit, and
• the rejected NSSAI is rejected NSSAI with respect to a current Public land mobile network (PLMN) or Stand-alone Non-Public Network (SNPN) or rejected NSSAI with respect to a current registration area.

A communication control method performed by a User Equipment (UE), the communication control method comprising the step of:

• in a case that
• the UE receives Single Network Slice Selection Assistance Information (S-NSSAI) included in rejected Network Slice Selection Assistance Information (NSSAI) included in an Extended rejected NSSAI Information Element (IE),
• one or more mapped S-NSSAI for the S-NSSAI included in pending NSSAI are stored in the UE, and
• the Extended rejected NSSAI IE includes all of the one or more mapped S-NSSAI,
• removing the S-NSSAI from the pending NSSAI stored in the UE, wherein
• the rejected NSSAI is rejected NSSAI with respect to a current Public land mobile network (PLMN) or Stand-alone Non-Public Network (SNPN) or rejected NSSAI with respect to a current registration area.