Patent SG-11201900969S-A (SG)
Title: Access stratum security for efficient packet processing
Inventor: LEE SOO BUM
IPC: H04W48/18
Filed: 2017-09-22
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 29 March 2018 (29.03.2018) WIP0 I ill~~~~~~~~ 011101010VIIIOH olo olmoo mo Imo En oimIE (10) International Publication Number WO 2018/057908 Al PCT W O 20 18/057 908 Al 1100 (51) International Patent Classification: H04W 12/04 (2009.01) H04W 48/18 (2009.01) H04L 29/06 (2006.01) H04W 36/00 (2009.01) (21) International Application Number: PCT/US2017/052979 (22) International Filing Date: 22 September 2017 (22.09.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/398,699 23 September 2016 (23.09.2016) US 15/710,991 21 September 2017 (21.09.2017) US (71) Applicant: QUALCOMM INCORPORATED [US/US]; ATTN: International IP Administration, 5775 Morehouse Drive, San Diego, California 92121-1714 (US). (72) Inventors: LEE, Soo Bum; 5775 Morehouse Drive, San Diego, CA 92121-1714 (US). KUBOTA, Keiichi; 5775 Morehouse Drive, San Diego, California 92121-1714 (US). ESCOTT, Adrian Edward; 5775 Morehouse Dri- ve, San Diego, California 92121-1714 (US). HORN, Gavin Bernard; 5775 Morehouse Drive, San Diego, California 92121-1714 (US). PALANIGOUNDER, Anand; 5775 Morehouse Drive, San Diego, California 92121-1714 (US). (74) Agent: READ, Randol W. et al.; Patterson & Sheridan, L.L.P., 24 Greenway Plaza, Suite 1600, Houston, Texas 77046-2472 (US). (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: ACCESS STRATUM SECURITY FOR EFFICIENT PACKET PROCESSING (57) : Certain aspects of the present disclosure provide techniques for managing security keys for enciphering and deciphering packets transmitted in a wireless communications system. According to certain aspects, a method ,102 of wireless communication by a user equipment (UE) is provided. The method generally includes obtaining an indication of a key area identifier (ID) of a first cell node, wherein the key area ID identifies a set of cell nodes that are asso- ciated with a network node that uses a first key for enciphering or deciphering messages and communicating a first set of messages with the first cell node using the first key for enciphering or deciphering the first set of messages. FIG. 11 [Continued on next page] WO 2018/057908 Al MIDEDIMOMMIDIREIHRIMEHROMODEVOIMIE TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Published: — with international search report (Art. 21(3))