Title:
METHOD FOR SIGNAL TRANSMISSION AND RECEPTION BY SMF IN WIRELESS COMMUNICATION SYSTEM AND DEVICE THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/160376
Kind Code:
A1
Abstract:
A method for signal transmission and reception by a session management function (SMF) in a wireless communication system according to an embodiment of the present invention comprises the steps of: the SMF receiving from a user equipment (UE) a rejection message with respect to a message associated with the activation indication of a protocol data unit (PDU) session; the SMF requesting, to an access management function (AMF), information relating to a change in the non-3GPP connection state of the UE; the SMF receiving from the AMF a message notifying that the non-3GPP connection state of the UE has been changed; and the SMF transmitting to the UE a message which comprises a new proxy-call session control function (P-CSCF) list and is associated with the activation indication of the PDU session. The message notifying that the non-3GPP connection state of the UE has been changed notifies that the non-3GPP access of the UE has been changed from CM-IDLE to CM-connected.
Inventors:
KIM LAEYOUNG (KR)
YOUN MYUNGJUNE (KR)
YOUN MYUNGJUNE (KR)
Application Number:
PCT/KR2019/001879
Publication Date:
August 22, 2019
Filing Date:
February 15, 2019
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H04W76/18; H04W60/00; H04W76/16; H04W76/20; H04W80/10
Domestic Patent References:
| WO2017142362A1 | 2017-08-24 |
Other References:
3GPP: "Procedures for the 5G system; Stage 2 (Release 15)", 3GPP TS 23.502 V15.0.0, no. V15.0.0, 1 December 2017 (2017-12-01) - 22 December 2017 (2017-12-22), pages 1 - 258, XP055632069
3GPP: "5G system-phase 1 CT WG1 Aspects (Release 15)", 3GPP TR 24.890 V15.0.0, vol. CT WG1, no. V15.0.0, 28 December 2017 (2017-12-28), pages 1 - 292, XP051450288
INTERDIGITAL INC: "UE requested multi-access PDU session establishment", S 2-180449 . 3GPP T SG SA WG2 MEETING #125, vol. SA WG2, 16 January 2018 (2018-01-16), Gothenburg. Sweden, XP051389871
CATT: "Interaction between SMF and UPF during the inter-sy stem change", S 2-180653 . 3GPP TSG SA WG2 MEETING #125, vol. SA WG2, 16 January 2018 (2018-01-16), Gothenburg . Sweden, XP051390066
3GPP: "5G system-phase 1 CT WG1 Aspects (Release 15)", 3GPP TR 24.890 V15.0.0, vol. CT WG1, no. V15.0.0, 28 December 2017 (2017-12-28), pages 1 - 292, XP051450288
INTERDIGITAL INC: "UE requested multi-access PDU session establishment", S 2-180449 . 3GPP T SG SA WG2 MEETING #125, vol. SA WG2, 16 January 2018 (2018-01-16), Gothenburg. Sweden, XP051389871
CATT: "Interaction between SMF and UPF during the inter-sy stem change", S 2-180653 . 3GPP TSG SA WG2 MEETING #125, vol. SA WG2, 16 January 2018 (2018-01-16), Gothenburg . Sweden, XP051390066
Attorney, Agent or Firm:
KIM, Yong In et al. (KR)
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