Invention Grant
- Patent Title: UE based fast return to 5G
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Application No.: US17053649Application Date: 2018-07-26
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Publication No.: US11452006B2Publication Date: 2022-09-20
- Inventor: Juan Zhang , Xipeng Zhu , Haris Zisimopoulos , Francesco Pica
- 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 Incorporated
- Priority: WOPCT/CN2018/088672 20180528
- International Application: PCT/CN2018/097260 WO 20180726
- International Announcement: WO2019/227642 WO 20191205
- Main IPC: H04W4/00
- IPC: H04W4/00 ; H04W36/00 ; H04W76/30 ; H04W60/04

Abstract:
Aspects of the present disclosure provide techniques that allow the user equipment (UE) that initiated single radio voice call continuity (SRVCC) handover during an active voice session from 5G new radio (NR) to 3G legacy system to effectively transition back from 3G legacy systems to 5G NR systems after conclusion of the active voice session. In one example, the UE may override radio resource control (RRC) connection release with evolved universal terrestrial radio access network (E-UTRAN) frequency information that may direct the UE to camp in E-UTRAN cell (LTE cell). In another example, the UE, as a local policy or configuration, may override the UTRAN cell information when the UE is registered in next generation radio access network (NR) cell as 5G capable UE.
Public/Granted literature
- US20210076264A1 UE BASED FAST RETURN TO 5G Public/Granted day:2021-03-11
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