Invention Grant
- Patent Title: Service continuity for group communication over LTE eMBMS
- Patent Title (中): LTE eMBMS组通信的业务连续性
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Application No.: US14221689Application Date: 2014-03-21
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Publication No.: US09445243B2Publication Date: 2016-09-13
- Inventor: Chia-Hao Yu , Chia-Chun Hsu , Yih-Shen Chen , Chien-Chun Huang-Fu , Yu-Syuan Jheng
- Applicant: MEDIATEK INC.
- Applicant Address: TW Hsin-Chu
- Assignee: MEDIATEK INC.
- Current Assignee: MEDIATEK INC.
- Current Assignee Address: TW Hsin-Chu
- Agency: Imperium Patent Works
- Agent Zheng Jin
- Main IPC: H04B7/00
- IPC: H04B7/00 ; H04W4/08 ; H04W4/10 ; H04W36/32 ; H04W72/00 ; H04W36/08 ; H04W76/00 ; H04W4/06 ; H04W74/00

Abstract:
A method of supporting group communication over LTE MBMS is provided. A UE first establishes a unicast Evolved Packet Service (EPS) bearer in an LTE network for group communication. The UE belongs to a communication group having a communication group ID. The UE receives access information from the network for monitoring downlink (DL) multicast traffic of the DL group communication based on a multicast decision. The UE is then ready for monitoring a multicast Multimedia Broadcast Multicast Service (MBMS) bearer for receiving the DL multicast traffic. In one embodiment, The UE requests to switch the DL multicast traffic from the multicast MBMS bearer to the unicast EPS bearer upon detecting that the UE is approaching an MBMS coverage boundary. In another embodiment, the UE transmits an indication of preferred target cells to the network before performing a handover and thereby maintaining multicast service continuity of the group communication.
Public/Granted literature
- US20140286224A1 Service Continuity for Group Communication Over LTE eMBMS Public/Granted day:2014-09-25
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