{HEAD ~ The UE} transmits one combined message of an AS control message and {TAIL ~ a NAS control message} including information indicating transmission of an SIP message, thereby having an effect on an upper node to reduce a delay due to message processing 
{ HEAD ~ The UE } transmits one combined message of an AS control message and { TAIL ~ a NAS control message } including information indicating transmission of an SIP message , thereby having an effect on an upper node to reduce a delay due to message processing
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH