COMMUNICATION METHOD OF TERMINAL FOR SWITCHING A RADIO ACCESS TECHNOLOGY AND TERMINAL THEREOF

摘要

The present invention relates to a communication method of a terminal for switching between radio access technologies and, specifically, to a method of a terminal for switching between radio access technologies in a communication system which includes a first network using a first radio access technology (RAT) and a second network using a second RAT according to one embodiment of the present invention, comprising the steps of: determining whether there is a packet switched session for the location registration of a terminal as a voice call according to a circuit switched fallback communication mode for switching between radio access technologies is terminated; and determining the transmission timing of a signaling connection release indication (SCRI) message for the termination of the packet switched session on the basis of the determination result. [Reference numerals] (AA) Start;(BB) End;(S610) End a voice call according to a certain communication method;(S620) Is there any packet exchange session for location registration ?;(S630) Has a process for location registration been ended ?;(S640) Determine the transmission timing of a signaling connection cancelation command message;(S650) Transmit the signaling connection cancelation command message;(S660) Switch from a first network to a second network