Patent SG-11201903613V-A (SG)
Title: User plane model for non-3gpp access to fifth generation core network
Inventor: ROMMER STEFAN
IPC: H04L12/46
Filed: 2017-11-09
Abstract: Systems and methods relating to establishment of a Packet Data Unit, PDU, session over a Non 3GPP Access to a 3GPP network and transmitting IP data and non-IP data are pro- vided. A method of operation of a wireless device is provided and comprises sending to an AMF over an N3IWF a PDU session re- quest to establish a PDU session to transport one of IP data or non- IP data over an established first IPsec, Security Association, SA, establishing an IPSec Child SA, for the PDU session and associ- ating the IPSec Child SA to a PDU session then encapsulating the data using ESP encapsulation or GRE encapsulation associated with the IPSec Child SA and indicating the type of data that is be- ing transmitted (e.g., non-IP data that comprises raw application data). In this manner, an loT device is able to securely transmit to the 3GPP network IP data/non-IP data/raw application data over 440 an unsecure non 3GPP access network such as Wireless Local Area Network. Methods and apparatus describing the NAS sig- nalling and the PDU session as each using their respective IPSec SA are provided. Similarly, methods and apparatus describing the NAS signalling and the PDU sessions sharing a common IPSec SA are provided. GRE encapsulation of the data within the ESP frame is described for both NAS signalling and PDU session in the case of multiple IPSec/Child SAs or common IPSec SA. Sim- ilarly, methods and apparatus are provided for the N3IWF which provides for the UE secure access to the network. 4 420 Establishing an IPSec Child SA (request initiated from N3IWF or from the UE), for the PDU session and associating the IPSec Child SA to a PDU session response obtained in response to the PDU session request. 430 o sending a PDU session request to AMF through N3IWF to establish a PDU session for 410 transporting data (IP and non-IP) over an established first IPsec SA established at registration, Encapsulating data using encapsulation associated with the IPSec Child SA and indicating the type of data to be transmitted as IP or non-IP data. Encapsulating data in GRE or the likes and transmitting in an ESP associated with the IPSec Child SA and indicating the type of data to be transmitted in the GRE header. (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 17 May 2018 (17.05.2018) W I PO I IiiimmommionotiolooluomilailiflovoimIE (10) International Publication Number WO 2018/087696 Al PCT W O 20 18/087 696 Al (51) International Patent Classification: H04L 12/46 (2006.01) H04W 12/06 (2009.01) H04L 29/06 (2006.01) (21) International Application Number: PCT/IB2017/057021 (22) International Filing Date: 09 November 2017 (09.11.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/420,843 11 November 2016 (11.11.2016) US (71) Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) [SE/SE]; 164 83 Stockholm (SE). (72) Inventors: ROMMER, Stefan; Skogsrydsgatan 7, SE-426 74 Vastra Frolunda (SE). RYDNELL, Gunnar; Sylvester- gatan 7, SE-41132 Se (SE). NILSSON, Daniel; Watsmans- vagen 34, SE-446 33 Alvangen (SE). CHEN, Qian; Eklan- da Skog 64, SE-431 49 Molndal (SE). (74) Agent: CARTIER, Francois et al.; Ericsson Canada Inc., Patent Department, 8275 Route Transcanadienne, Saint - Laurent, Quebec, H4S OB6 (CA). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, (54) Title: USER PLANE MODEL FOR NON-3GPP ACCESS TO FIFTH GENERATION CORE NETWORK Figure 4a [Continued on next page] WO 2018/087696 Al MIDEDIMOMOIDEIREIDIONHOMEDIEROMEMOIS TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Declarations under Rule 4.17: as to applicant's entitlement to apply for and be granted a patent (Rule 4.17(H)) as to the applicant's entitlement to claim the priority of the earlier application (Rule 4.17(iii)) Published: — with international search report (Art. 21(3))