Method and apparatus for selecting network slice admission control function

A communication device, comprising:

• a transceiver;
• a memory;
• and
• a processor,
• wherein the processor is configured to:
• select a network slice admission control function (NSACF) based on service capabilities of the NSACF;
• wherein the service capabilities comprise at least one of:
• a first service capability that supports monitoring a number of registered user equipments (UEs) of a network slice, or
• a second service capability that supports monitoring a number of established protocol data unit (PDU) sessions of the network slice,
• in case that an operator service capability policy exists, the processor is configured to:
• select the NSACF according to the operator service capability policy;
• wherein the operator service capability policy comprises one of:
• indicating to select an NSACF having required service capabilities, wherein the required service capabilities comprise only the first service capability or comprise the first service capability and the second service capability;
• indicating to select a high-priority NSACF;
• indicating to select an NSACF having the first service capability and a high priority;
• or
• indicating to select an NSACF having the first and second service capabilities and a high priority.

A non-transitory computer readable storage medium having stored therein computer-executable instructions that, when executed by a processor, cause the processor to:

• select a network slice admission control function (NSACF) based on service capabilities of the NSACF;
• wherein the service capabilities comprise at least one of:
• a first service capability that supports monitoring a number of registered user equipments (UEs) of a network slice, or
• a second service capability that supports monitoring a number of established protocol data unit (PDU) sessions of the network slice;
• wherein the instructions that, when executed by a processor, cause the processor to:
• select the NSACF according to an operator service capability policy, in case that the operator service capability policy exists,
• wherein the operator service capability policy comprises one of:
• indicating to select an NSACF having required service capabilities, wherein the required service capabilities comprise only the first service capability or comprise the first service capability and the second service capability;
• indicating to select a high-priority NSACF;
• indicating to select an NSACF having the first service capability and a high priority;
• or
• indicating to select an NSACF having the first and second service capabilities and a high priority.