| CPC H04L 67/141 (2013.01) | 14 Claims |
|
1. A method performed by an access and mobility management function (AMF) in a communication system, the method comprising:
receiving, from a terminal, a first message for requesting an establishment of a protocol data unit (PDU) session associated with a network slice;
identifying whether the network slice is not available;
in case that the network slice is not available, selecting an alternative network slice alternative to the network slice;
selecting a session management function (SMF) based on the alternative network slice; and
transmitting, to the SMF selected based on the alternative network slice, a second message for establishing the PDU session, the second message comprises information on the alternative network slice.
|