IMPLEMENTING METHOD OF HAND OVER FOR A EMERGENCY CALL IN A WIRELESS COMMUNICATION SYSTEM WHICH PERMITS THE HAND OVER TO A LIMIT REGION IF A CORRESPONDING BEARER IS A EMERGENCY BEARER

摘要

PURPOSE: An implementing method of hand over for an emergency call in a wireless communication system is provided to guarantee seamless communication in a wireless communication system in case the hand over of the emergency call to a limit region in a 3GPP(3rd Generation Partnership Project) EPS(Evolved Packet System) system is operated.;CONSTITUTION: A target MME(Mobility Management Entity) transmits a hand over request message to a target eNodeB(S105). A UE(User Equipment) transmits a hand over confirm message to a target base station(S110). The target MME transmits an update bearer request message for production of the second emergency bearer to a target S-GW(Serving Gateway)(S113). In a PDN- GW (Packet Data Network Gateway), a down link bearer to the target S-GW is completed(S116).;COPYRIGHT KIPO 2010