Patent SG-11202000149V-A (SG)
Title: Methods and apparatus for srs antenna switching in carrier aggregation
Inventor: AKULA PRASHANTH
IPC: H04L5/00
Filed: 2018-08-09
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) vitivio oviolo 111111111m In mo itio oimIE (19) World Intellectual Property Organization International Bureau (10) International Publication Number WO 2019/032888 Al (43) International Publication Date 14 February 2019 (14.02.2019) WIP0 I PCT California 92121-1714 (US). KHANDEKAR, Aamod Dinkar; 5775 Morehouse Drive, San Diego, California 92121-1714 (US). O'SHEA, Helena Deirdre; 5775 More- house Drive, San Diego, California 92121-1714 (US). BHATTACHARJEE, Supratik; 5775 Morehouse Drive, San Diego, California 92121-1714 (US). (74) Agent: BELL, Orson J. 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, (51) International Patent Classification: HO4L 5/00 (2006.01) (21) International Application Number: PCT/US2018/046097 (22) International Filing Date: 09 August 2018 (09.08.2018) English English (25) Filing Language: (26) Publication Language: (30) Priority Data: 62/544,648 11 August 2017 (11.08.2017) US 16/058,879 08 August 2018 (08.08.2018) US (71) Applicant: QUALCOMM INCORPORATED [US/US]; ATTN: International IP Administration, 5775 Morehouse Drive, San Diego, California 92121-1714 (US). (72) Inventors: AKULA, Prashanth; 5575 Morehouse Dri- ve, San Diego, California 92121-1714 (US). RICO AL- VARINO, Alberto; 5775 Morehouse Drive, San Diego, (54) Title: METHODS AND APPARATUS FOR SRS ANTENNA SWITCHING IN CARRIER AGGREGATION 1100 r 1102 DETERMINE ONE OR MORE BAND COMBINATIONS THAT SHARE AN ANTENNA SWITCH r 1104 SEND A LIST OF ONE OR MORE BANDS IN THE ONE OR MORE BAND COMBINATIONS TO A BASE STATION (BS) FIG. 11 (57) : Certain aspects of the present disclosure relate to communication systems, and more particularly, to improving perfor- mance for sounding reference signal (SRS) antenna switching in carrier aggregation (CA). A method is provided, that may be performed by a user equipment (UE) for wireless communications. The method includes determining one or more band combinations that share an antenna switch and sending a list of one or more bands in the one or more band combinations to a base station (BS). The BS receives the list and schedules the UE based on the received list. [Continued on next page] WO 2019/032888 Al MIDEDIMOMOIDEIROMOIONIMOIHMEHMEMOIMIE 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, 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))