- Patent Title: Method and device for group communication, having robust mobility
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Application No.: US15964847Application Date: 2018-04-27
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Publication No.: US10560876B2Publication Date: 2020-02-11
- Inventor: Sung Hwan Won , Songyean Cho , Erik Guttman
- Applicant: Samsung Electronics Co., Ltd.
- Applicant Address: KR Suwon-si
- Assignee: Samsung Electronics Co., Ltd.
- Current Assignee: Samsung Electronics Co., Ltd.
- Current Assignee Address: KR Suwon-si
- Agency: Jefferson IP Law, LLP
- Priority: KR10-2013-0128790 20131028; KR10-2013-0133730 20131105; KR10-2013-0159487 20131219; KR10-2014-0013853 20140206; KR10-2014-0055911 20140509; KR10-2014-0096823 20140729
- Main IPC: H04W88/02
- IPC: H04W88/02 ; H04W36/00 ; H04W28/02 ; H04W76/28 ; H04W4/029 ; H04W36/02 ; H04W4/06 ; H04L12/18 ; H04W76/40

Abstract:
The present invention relates to a method and apparatus for group communication. In more detail, the present invention relates to a method and apparatus for allowing a terminal to participate in group communication effectively on the move, and a communication method of a base station in a mobile communication system according to the present invention includes receiving Multimedia Broadcast Multicast Service (MBMS) bearer information including a QoS parameter from a Multi-cell/multicast Coordination Entity (MCE); updating bearer information for a terminal using the received MBMS bearer information; making a handover decision of the terminal and transmitting a handover request message including the MBMS bearer information to a Mobility Management Entity (MME) or a second base station which does not support MBMS; transmitting a handover command message from the second base station to the terminal; and forwarding MBMS data to the second base station during a predetermined period. The group communication service reception method and apparatus of the present invention is advantageous in that a terminal participated in group communication is capable of receiving the group communication service seamlessly, even when the terminal enters an area not supporting MBMS, by switching the communication path to a Point-To-Point (PTP) communication path quickly.
Public/Granted literature
- US20180248708A1 METHOD AND DEVICE FOR GROUP COMMUNICATION, HAVING ROBUST MOBILITY Public/Granted day:2018-08-30
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