- Patent Title: Access and mobility management function (AMF), user equipment (UE), session management function (SMF), communication control method for AMF, communication control method for UE, and communication control method for SMF
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Application No.: US16765410Application Date: 2018-11-20
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Publication No.: US11405842B2Publication Date: 2022-08-02
- Inventor: Yudai Kawasaki , Yasuo Sugawara , Shuichiro Chiba , Masafumi Aramoto
- Applicant: SHARP KABUSHIKI KAISHA , FG Innovation Company Limited
- Applicant Address: JP Sakai; HK Tuen Mun
- Assignee: SHARP KABUSHIKI KAISHA,FG Innovation Company Limited
- Current Assignee: SHARP KABUSHIKI KAISHA,FG Innovation Company Limited
- Current Assignee Address: JP Sakai; HK Tuen Mun
- Agency: Imperium Patent Works
- Priority: JPJP2017-222795 20171120
- International Application: PCT/JP2018/042862 WO 20181120
- International Announcement: WO2019/098389 WO 20190523
- Main IPC: H04W36/32
- IPC: H04W36/32 ; H04W76/18 ; H04W76/27 ; H04W8/08 ; H04W36/14 ; H04W48/16 ; H04W48/18 ; H04W60/00 ; H04W88/06 ; H04W92/24
Abstract:
A communication measure is provided that causes a PDU session established in a 5GS to return to the PDU session in an original state after the PDU session established in the 5GS is moved (handed over) to an EPS and then moved (handed over) to the 5GS again. In addition, according to the present invention, a communication measure is provided that causes a PDN connection established in the EPS to return to the PDN connection in an original state after the PDN connection established in the EPS is moved (handed over) to the 5GS and then again moved (handed over) to the EP. In addition, according to the present invention, a communication measure is provided that allows smooth mobility of the UE in an idle mode between the 5GS and the EPS. Further, a communication measure is provided that performs a handover between the 5GS and the EPS smoothly.
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