OPERATION METHOD DUE TO SLICE DEREGISTRATION INACTIVITY TIMER EXPIRY
According to one embodiment, a method may comprise: starting a slice deregistration inactivity timer; locally removing a Single Network Slice Selection Assistance Information (S-NSSAI) from an Allowed NSSAI if the slice deregistration inactivity timer expires; and de-mapping a replaced S-NSSAI and an alternative S-NSSAI in an access type when the replaced S-NSSAI or alternative S-NSSAI is removed from an allowed NSSAI due to the slice deregistration inactivity timer expiry over a corresponding access type.
1 . A method performed by a user equipment (UE) and comprising:
starting a slice deregistration inactivity timer;
locally removing a Single Network Slice Selection Assistance Information (S-NSSAI) from an Allowed NSSAI if the slice deregistration inactivity timer expires; and
de-mapping a replaced S-NSSAI and an alternative S-NSSAI in an access type when the replaced S-NSSAI or the alternative S-NSSAI is removed from the allowed NSSAI due to the slice deregistration inactivity timer expiry over a corresponding access type.
2 . The method of claim 1 , further comprising:
locally removing a mapping of the replaced S-NSSAI and the alternative S-NSSAI.
3 . The method of claim 1 , wherein the slice deregistration inactivity timer is set per access type.
4 . The method of claim 1 ,
wherein the slice deregistration inactivity timer is started a) when the Network Slice is added to the Allowed NSSAI and there are no Protocol data unit (PDU) Sessions associated with the Network Slice over a corresponding access type or b) when a last PDU Session associated with the Network Slice over a same access type is released.
5 . The method of claim 1 , further comprising:
stopping or resetting the first timer when at least one PDU Session associated with the Network Slice is successfully established or the Network Slice is removed from the Allowed NSSAI.
6 . A user equipment (UE) comprising:
a transceiver; and
a processor configured to control the transceiver thereby performing operations including:
starting a slice deregistration inactivity timer;
locally removing a Single Network Slice Selection Assistance Information (S-NSSAI) from an Allowed NSSAI if the slice deregistration inactivity timer expires; and
de-mapping a replaced S-NSSAI and an alternative S-NSSAI in an access type when the replaced S-NSSAI or the alternative S-NSSAI is removed from the allowed NSSAI due to the slice deregistration inactivity timer expiry over a corresponding access type.
7 . The UE of claim 6 , wherein the operations may further include:
locally removing a mapping of the replaced S-NSSAI and the alternative S-NSSAI.
8 . The UE of claim 6 , wherein the slice deregistration inactivity timer is set per access type.
9 . The UE of claim 6 ,
wherein the slice deregistration inactivity timer is started a) when the Network Slice is added to the Allowed NSSAI and there are no Protocol data unit (PDU) Sessions associated with the Network Slice over a corresponding access type or b) when a last PDU Session associated with the Network Slice over a same access type is released.
10 . The UE of claim 6 , wherein the operations may further include:
stopping or resetting the first timer when at least one PDU Session associated with the Network Slice is successfully established or the Network Slice is removed from the Allowed NSSAI.
11 . A semiconductor chipset equipped into a user equipment (UE), comprising:
at least one processor; and
at least one memory capable of storing instructions and being connected electrically to the at least one processor operably,
wherein operations, performed when the instructions are executed by the at least one processor, include:
starting a slice deregistration inactivity timer;
locally removing a Single Network Slice Selection Assistance Information (S-NSSAI) from an Allowed NSSAI if the slice deregistration inactivity timer expires; and
de-mapping a replaced S-NSSAI and an alternative S-NSSAI in an access type when the replaced S-NSSAI or the alternative S-NSSAI is removed from the allowed NSSAI due to the slice deregistration inactivity timer expiry over a corresponding access type.
12 . The semiconductor chipset of claim 11 , wherein the operations may further include:
locally removing a mapping of the replaced S-NSSAI and the alternative S-NSSAI.
13 . The semiconductor chipset of claim 11 , wherein the slice deregistration inactivity timer is set per access type.
14 . The semiconductor chipset of claim 11 ,
wherein the slice deregistration inactivity timer is started a) when the Network Slice is added to the Allowed NSSAI and there are no Protocol data unit (PDU) Sessions associated with the Network Slice over a corresponding access type or b) when a last PDU Session associated with the Network Slice over a same access type is released.
15 . The semiconductor chipset of claim 11 . wherein the operations may further include:
stopping or resetting the first timer when at least one PDU Session associated with the Network Slice is successfully established or the Network Slice is removed from the Allowed NSSAI.