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1. (WO2018203734) APPARATUS AND METHOD FOR SUPPORTING HANDOVER IN A WIRELESS COMMUNICATION SYSTEM

Pub. No.:    WO/2018/203734    International Application No.:    PCT/KR2018/005233
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Sat May 05 01:59:59 CEST 2018
IPC: H04W 36/02
H04W 36/08
H04W 28/02
Applicants: SAMSUNG ELECTRONICS CO., LTD.
Inventors: XU, Lixiang
WANG, Hong
KE, Xiaowan
Title: APPARATUS AND METHOD FOR SUPPORTING HANDOVER IN A WIRELESS COMMUNICATION SYSTEM
Abstract:
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). The present invention provides a method for supporting handover, comprising the steps of: informing, by a source base station, a core network whether a direct data forwarding path is available; deciding, by the core network, whether to use direct data forwarding or indirect data forwarding; informing, by the core network, a target base station of information about the direct data forwarding or indirect data forwarding; allocating, by the target base station, data forwarding tunnel information, the target base station allocating the data forwarding tunnel information according to the received information about the direct data forwarding or indirect data forwarding; transmitting, by the target base station, the allocated data forwarding tunnel information to the core network; and informing, by the core network, the source base station of the data forwarding tunnel information. With the present invention, different data forwarding methods are supported to prevent data loss and ensure service continuity.