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