IP Library › Granted Patent US 12,262,253
Granted Patent B2
US 12,262,253 · App. 17/904,643 · Granted Mar 25, 2025

Support of service continuity between SNPN and PLMN

Inventors: Seokjung Kim (Seoul, KR); Myungjune Youn (Seoul, KR); Jian Xu (Seoul, KR); Daewook Byun (Seoul, KR)
Assignee: LG ELECTRONICS INC.
H04W36/0022H04W36/00698H04W36/12H04W36/1443H04W84/042
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Quick Facts
Patent No.
US 12,262,253
App. No.
17/904,643
Granted
Mar 25, 2025
Kind
B2
Abstract

A method and apparatus for support of service continuity between stand-alone non-public network (SNPN) and public land mobile network (PLMN) is provided. A wireless device transmits, to an access and mobility management function (AMF) of a source network, a protocol data unit (PDU) session establishment request to establish a PDU session with the source network via a non-3GPP interworking function (N3IWF) of the source network. The PDU session establishment request includes information informing that data delivery is not available via the PDU session. The wireless device determines to move from the source network to a target network, and transmits, to a user plane function (UPF) of the source network, mobility information informing that the wireless device moves from the source network to the target network.

Claims (51)

1. A method performed by a wireless device configured to operate in a wireless communication system, the method comprising:

performing a first registration with a source network via a radio access network (RAN) node of the source network;

performing a first protocol data unit (PDU) session establishment with the source network via the RAN node of the source network for establishing a multi-access PDU (MA PDU) session;

performing a second registration with the source network via a non-3GPP interworking function (N3IWF) of the source network;

performing a second PDU session establishment with the source network via the N3IWF of the source network for establishing the MA PDU session;

wherein the second PDU session establishment comprises: transmitting a PDU session establishment request message which includes i) a MA PDU request indication for the MA PDU session, and ii) information informing that data delivery is not available via the N3IWF of the source network;

receiving downlink (DL) data from the source network via the RAN node of the source network based on the MA PDU session;

determining to move from the source network to a target network;

transmitting, to a user plane function (UPF) of the source network, mobility information informing that the wireless device moves from the source network to the target network; and

receiving DL data from the target network via the N3IWF of the source network.

2. The method of claim 1 , wherein the source network is a public land mobile network (PLMN), and

wherein the target network is a stand-alone non-public network (SNPN).

3. The method of claim 1 , wherein the source network is an SNPN, and

wherein the target network is a PLMN.

4. The method of claim 1 , wherein the mobility information indicates that data delivery is not available via the RAN node of the source network.

5. The method of claim 1 , wherein the mobility information indicates that data delivery is available via the N3IWF of the source network.

6. The method of claim 1 , wherein the mobility information is forwarded to the N3IWF of the source network.

7. The method of claim 1 , wherein the wireless device is in communication with at least one of a mobile device, a network, and/or autonomous vehicles other than the wireless device.

8. The method of claim 1 , wherein the mobility information indicates that data delivery is available via the N3IWF of the source network.

9. A wireless device configured to operate in a wireless communication system, the wireless device comprising:

at least one transceiver;

at least one processor; and

at least one computer memory operably connectable to the at least one processor and storing instructions that, based on being executed by the at least one processor, perform operations comprising:

performing a first registration with a source network via a radio access network (RAN) node of the source network;

performing a first protocol data unit (PDU) session establishment with the source network via the RAN node of the source network for establishing a multi-access PDU (MA PDU) session;

performing a second registration with the source network via a non-3GPP interworking function (N3IWF) of the source network;

performing a second PDU session establishment with the source network via the N3IWF of the source network for establishing the MA PDU session;

wherein the second PDU session establishment comprises: transmitting a PDU session establishment request message which includes i) a MA PDU request indication for the MA PDU session, and ii) information informing that data delivery is not available via the N3IWF of the source network;

receiving downlink (DL) data from the source network via the RAN node of the source network based on the MA PDU session;

determining to move from the source network to a target network;

transmitting, to a user plane function (UPF) of the source network, mobility information informing that the wireless device moves from the source network to the target network; and

receiving DL data from the target network via the N3IWF of the source network.

10. The wireless device of claim 9 , wherein the source network is a public land mobile network (PLMN), and

wherein the target network is a stand-alone non-public network (SNPN).

11. The wireless device of claim 9 , wherein the source network is an SNPN, and

wherein the target network is a PLMN.

12. The wireless device of claim 9 , wherein the mobility information indicates that data delivery is not available via the RAN node of the source network.

13. The wireless device of claim 9 , wherein the mobility information is forwarded to the N3IWF of the source network.

14. A processing apparatus configured to control a wireless device in a wireless communication system, the processing apparatus comprising:

at least one processor; and

at least one computer memory operably connectable to the at least one processor,

wherein the at least one processor is configured to perform operations comprising:

performing a first registration with a source network via a radio access network (RAN) node of the source network;

performing a first protocol data unit (PDU) session establishment with the source network via the RAN node of the source network for establishing a multi-access PDU (MA PDU) session;

performing a second registration with the source network via a non-3GPP interworking function (N3IWF) of the source network;

performing a second PDU session establishment with the source network via the N3IWF of the source network for establishing the MA PDU session;

wherein the second PDU session establishment comprises: generating a PDU session establishment request message which includes i) a MA PDU request indication for the MA PDU session, and ii) information informing that data delivery is not available via the N3IWF of the source network;

obtaining downlink (DL) data from the source network via the RAN node of the source network based on the MA PDU session;

determining to move from the source network to a target network;

generating mobility information informing that the wireless device moves from the source network to the target network; and

obtaining DL data from the target network via the N3IWF of the source network.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 19, 2022
From: KIM, SEOKJUNG; YOUN, MYUNGJUNE; XU, JIAN; BYUN, DAEWOOK
To: LG ELECTRONICS INC.
Reel/Frame 061266/0939 →
Priority Claims (1)
KR 10-2020-0034043 · Mar 19, 2020 · national
Continuity (1)
Related Publication 20230094211A1 · Mar 30, 2023
References Cited (30)
US 9801067B1 · Hsieh · 2017 [cited by examiner]
US 20140082697A1 · Watfa · 2014 [cited by examiner]
US 20160057680A1 · Koskinen · 2016 [cited by examiner]
US 20170289873A1 · Kim · 2017 [cited by examiner]
US 20170318458A1 · Laselva · 2017 [cited by examiner]
US 20190349849A1 · Kavuri · 2019 [cited by examiner]
US 20190394711A1 · Kim · 2019 [cited by examiner]
US 20200275511A1 · Liu · 2020 [cited by examiner]
CN 110249667A · 2019 [cited by examiner]
CN 110771223A · 2020 [cited by examiner]
CN 113574962B · 2024 [cited by examiner]
EP 3840469A1 · 2021 [cited by examiner]
KR 20180109714 · 2018 [cited by applicant]
WO WO2013120274A1 · 2013 [cited by examiner]
WO WO2015024164A1 · 2015 [cited by examiner]
WO WO2015172580A1 · 2015 [cited by examiner]
WO WO2019033967A1 · 2019 [cited by examiner]
WO WO2019076275A1 · 2019 [cited by examiner]
WO 2020092173 · 2020 [cited by applicant]
WO 2020102512 · 2020 [cited by applicant]
WO 2020151696 · 2020 [cited by applicant]
WO WO2020151696A1 · 2020 [cited by examiner]
WO WO2020166881A1 · 2020 [cited by examiner]
WO WO2021134601A1 · 2021 [cited by examiner]
PCT International Application No. PCT/KR2021/002793, International Search Report dated Jun. 21, 2021, 2 page. [cited by applicant]
Ericsson, “Solution to support service continuity between two networks and paging from both networks,” S2-2000193, SA WG2 Meeting #S2-136AH, Jan. 2020, 9 pages. [cited by applicant]
3rd Generation Partnership Project, “Technical Specification Group Services and System Aspects; Procedures for the 5G System (5GS); Stage 2 (Release 16),” pp. 44-358 and figure 4.12.5-1, Sections 4.2.2.2, 4.3.2 and 4.22… [cited by applicant]
Nokia et al., “Target Access type in N1N2MessageTransfer Request for a MA PDU session,” C4-194360, 3GPP TSG-CT WG4 Meeting #94, Oct. 2019, 13 pages. [cited by applicant]
InterDigital, Inc., “Support for Multi-Access PDU Session in URSP and PDU session selection,” S2-1900373, 3GPP TSG-SA WG2 Meeting #130, Jan. 2019, 9 pages. [cited by applicant]
3rd Generation Partnership Project, “Technical Specification Group Services and System Aspects; System architecture for the 5G System (5GS): Stage 2 (Release 16),” Sections 5.32, 4.2.8.1, and 5.30.2 of 3GPP TS 23.501 V1… [cited by applicant]
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