Method and apparatus for registering with network slice in wireless communication system

1. A method of a network function (NF) entity performing communication in a wireless communication system, the method comprising:

receiving a first request message for a network slice, during a first user equipment (UE) registration procedure, from an access and mobility function (AMF) entity, wherein the first request message relates to number of UEs update request message;

determining whether a number of UEs registered with the network slice is to be updated, based on an access type information for the network slice; and

transmitting, to the AMF entity, a response message including information indicating whether the number of UEs registered with the network slice reached a maximum number of UEs allowed to be registered with the network slice, in response to receiving the first request message.

2. The method of claim 1 , further comprising:

receiving a second request message for the network slice, during a second UE registration procedure, from the AMF entity, wherein the second request message relates to number of UEs update request message; and

determining whether the number of UEs registered with the network slice is to be updated in response to receiving the second request message, based on at least one of the access type information for the network slice, the information regarding update of the number of UEs registered with the network slice in response to receiving the first request message, the maximum number of UEs allowed to be registered with the network slice.

3. The method of claim 2 , further comprising:

receiving, from the AMF entity, the information regarding update of the number of UEs registered with the network slice in response to receiving the second request message determined based on at least one of the access type information for the network slice or the information regarding update of the number of UEs registered with the network slice in response to receiving the first request message.

4. A method of a user equipment (UE) performing communication in a wireless communication system, the method comprising:

transmitting a first registration request of the UE for a network slice to an access and mobility function (AMF) entity through a first network; and

receiving a first response message including information indicating whether a number of UEs registered with the network slice reached a maximum number of UEs allowed to be registered with the network slice in response to transmitting the first registration request,

wherein the information indicating whether the number of UEs registered with the network slice is to be updated associated with the first registration request is determined based on an access type information for the network slice.

5. The method of claim 4 , further comprising:

transmitting a second registration request of the UE for the network slice to the AMF entity through a second network; and

receiving a second response message including information indicating whether the number of UEs registered with the network slice reached the maximum number of UEs allowed to be registered with the network slice, in response to transmitting the second registration request,

wherein the information indicating whether the number of UEs registered with the network slice is to be updated associated with the second registration request is determined based on at least one of the access type information for the network slice, the information regarding update of the number of UEs registered with the network slice associated with the first registration request, or the maximum number of UEs allowed to be registered with the network slice.

6. The method of claim 5 , further comprising:

receiving, from the AMF entity, the information regarding update of the number of UEs registered with the network slice associated with the second registration request determined based on at least one of the access type information for the network slice or the information regarding update of the number of UEs registered with the network slice associated with the first registration request.

7. A network function (NF) entity performing communication in a wireless communication system, the NF entity comprising:

a transceiver; and

at least one processor configured to:

receive, via the transceiver, a first request message for a network slice, during a first user equipment (UE) registration procedure, from an access and mobility function (AMF) entity, wherein the first request message relates to number of UEs update request message,

determine whether a number of UEs registered with the network slice is to be updated, based on an access type information for the network slice, and

transmit, via the transceiver, to the AMF entity, a response message including information indicating whether the number of UEs registered with the network slice has reached a maximum number of UEs allowed to be registered with the network slice, in response to receiving the first request message.

8. The NF entity of claim 7 , wherein the at least one processor is further configured to:

receive, via the transceiver, a second request message for the network slice, during a second UE registration procedure, from the AMF entity, wherein the second request message relates to number of UEs update request message, and

determine whether the number of UEs registered with the network slice is to be updated in response to receiving the second request message, based on at least one of the access type information for the network slice, the information regarding update of the number of UEs registered with the network slice in response to receiving the first request message, the maximum number of UEs allowed to be registered with the network slice.

9. The NF entity of claim 8 , wherein the at least one processor is further configured to:

receive, via the transceiver, from the AMF entity, the information regarding update of the number of UEs registered with the network slice in response to receiving the second request message determined based on at least one of the access type information for the network slice or the information regarding update of the number of UEs registered with the network slice in response to receiving the first request message.

10. A user equipment (UE) performing communication in a wireless communication system, the UE comprising:

a transceiver; and

at least one processor configured to:

transmit, via the transceiver, a first registration request of the UE for a network slice to an access and mobility function (AMF) entity through a first network, and

receive, via the transceiver, a first response message including information indicating whether a number of UEs registered with the network slice reached a maximum number of UEs allowed to be registered with the network slice in response to transmitting the first registration request,

wherein the information indicating whether the number of UEs registered with the network slice is to be updated associated with the first registration request is determined based on an access type information for the network slice.

11. The UE of claim 10 , wherein the at least one processor is further configured to:

transmit, via the transceiver, a second registration request of the UE for the network slice to the AMF entity through a second network, and

receive, via the transceiver, a second response message including information indicating whether the number of UEs registered with the network slice reached the maximum number of UEs allowed to be registered with the network slice, in response to transmitting the second registration request,

wherein the information indicating whether the number of UEs registered with the network slice is to be updated associated with the second registration request is determined based on at least one of the access type information for the network slice, the information regarding update of the number of UEs registered with the network slice associated with the first registration request, or the maximum number of UEs allowed to be registered with the network slice.

12. The UE of claim 11 , wherein the at least one processor is further configured to:

receive, via the transceiver, from the AMF entity, the information regarding update of the number of UEs registered with the network slice associated with the second registration request determined based on at least one of the access type information for the network slice or the information regarding update of the number of UEs registered with the network slice associated with the first registration request.

13. A method of an access and mobility function (AMF) entity performing communication in a wireless communication system, the method comprising:

receiving a first registration request for a network slice from a user equipment (UE) through a first network;

transmitting a first request message for the network slice to a network function (NF) entity, wherein the first request message relates to number of UEs update request message; and

receiving, from the NF entity, a response message including information indicating whether a number of UEs registered with the network slice reached a maximum number of UEs allowed to be registered with the network slice, associated with the first registration request,

wherein whether the number of UEs registered with the network slice is to be updated associated with the first registration request is determined based on an access type information for the network slice.

14. The method of claim 13 , further comprising:

receiving a second registration request for the network slice from the UE through a second network;

transmitting a second request message for the network slice to the NF entity, wherein the second request message relates to number of UEs update request message; and

receiving, from the NF entity, a response message including information indicating whether the number of UEs registered with the network slice reached the maximum number of UEs allowed to be registered with the network slice, associated with the second registration request,

wherein whether the number of UEs registered with the network slice is to be updated associated with the second registration request is determined based on at least one of the access type information for the network slice, the information regarding update of the number of UEs registered with the network slice associated with the first registration request, or the maximum number of UEs allowed to be registered with the network slice.

15. The method of claim 14 , further comprising:

determining whether the number of UEs registered with the network slice is to be updated associated with the second registration request based on at least one of the access type information for the network slice or the information regarding update of the number of UEs registered with the network slice associated with the first registration request.

16. An access and mobility function (AMF) entity performing communication in a wireless communication system, the AMF entity comprising:

a transceiver; and

at least one processor configured to:

receive, via the transceiver, a first registration request for a network slice from a user equipment (UE) through a first network,

transmit, via the transceiver, a first request message for the network slice to a network function (NF) entity, wherein the first request message relates to number of UEs update request message, and

receive, via the transceiver, a response message including information indicating whether a number of UEs registered with the network slice reached a maximum number of UEs allowed to be registered with the network slice, associated with the first registration request, from the NF entity,

wherein whether the number of UEs registered with the network slice is to be updated associated with the first registration request is determined based on an access type information for the network slice.

17. The AMF entity of claim 16 , wherein the at least one processor is further configured to:

receive, via the transceiver, a second registration request for the network slice from the UE through a second network,

transmit, via the transceiver, a second request message for the network slice to the NF entity, wherein the second request message relates to number of UEs update request message, and

receive, via the transceiver, a response message including information indicating whether the number of UEs registered with the network slice reached the maximum number of UEs allowed to be registered with the network slice, associated with the second registration request, from the NF entity,

wherein whether the number of UEs registered with the network slice is to be updated associated with the second registration request is determined based on at least one of the access type information for the network slice, the information regarding update of the number of UEs registered with the network slice associated with the first registration request, or the maximum number of UEs allowed to be registered with the network slice.

18. The AMF entity of claim 17 , wherein the at least one processor is further configured to:

determine whether the number of UEs registered with the network slice is to be updated associated with the second registration request based on at least one of the access type information for the network slice or the information regarding update of the number of UEs registered with the network slice associated with the first registration request.