Invention Grant
- Patent Title: Indirect Single Radio Voice Call Continuity
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Application No.: US16759776Application Date: 2018-10-26
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Publication No.: US11963045B2Publication Date: 2024-04-16
- Inventor: Juan Zhang , Xipeng Zhu , Haris Zisimopoulos , Xiangkai Guan
- Applicant: Qualcomm Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: QUALCOMM IP DEPT.
- Agent James Hunt Yancey, Jr.
- Priority: WO TCN2017108536 2017.10.31
- International Application: PCT/CN2018/112094 2018.10.26
- International Announcement: WO2019/085831A 2019.05.09
- Date entered country: 2020-04-28
- Main IPC: H04W36/00
- IPC: H04W36/00 ; H04W8/08 ; H04W36/14

Abstract:
Methods, systems, and devices for wireless communications are described. An access and mobility management function (AMF) associated with a first radio access network (RAN) may identify a user equipment (UE) connected to a source base station of the first RAN. The AMF may receive a handover message including a voice call continuity handover trigger message indicating a handover of the UE to a target base station associated with a second RAN. In some examples, the AMF may transmit a bypass handover message to a second network device based a on the received handover message. In some cases, the bypass handover message may include the voice call continuity handover trigger message. In some examples, the second network device is a mobility management entity (MME) associated with an Evolved Universal Terrestrial Radio Access Network (E-UTRAN).
Public/Granted literature
- US20210185567A1 INDIRECT SINGLE RADIO VOICE CALL CONTINUITY Public/Granted day:2021-06-17
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