Patent SG-11201807613U-A (SG)
Title: High doppler channel performance enhancement
Inventor: SUN JING
IPC: H04L27/26
Filed: 2017-03-17
Abstract: 1, 505 L1L Transmission 10-a Select RS Density Configuration 520-a RS Configured UL Transmission FIG. 5A 105-1, W O 20 17 / 18 427 8 Al (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 26 October 2017 (26.10.2017) WIPO I PCT omits o iflo VII IE (10) International Publication Number WO 2017/184278 Al (51) International Patent Classification: H04B 7/0413 (2017.01) HO4L 27/26 (2006.01) H04L 5/00 (2006.01) (21) International Application Number: PCT/US2017/023044 (22) International Filing Date: 17 March 2017 (17.03.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/325,946 21 April 2016 (21.04.2016) US 15/461,368 16 March 2017 (16.03.2017) US (71) Applicant: QUALCOMM INCORPORATED [US/US]; Attn: International IP Administration, 5775 Morehouse Dri- ve, San Diego, California 92121-1714 (US). (72) Inventors: SUN, Jing; 5775 Morehouse Drive, San Diego, California 92121-1714 (US). YOO, Taesang; 5775 More- house Drive, San Diego, California 92121-1714 (US). LUO, Tao; 5775 Morehouse Drive, San Diego, California 92121-1714 (US). (74) Agent: ANDERSON, Thomas D.; Holland & Hart LLP, P.O. Box 11583, Salt Lake City, Utah 84147 (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, 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, 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)) (54) Title: HIGH DOPPLER CHANNEL PERFORMANCE ENHANCEMENT (57) : A base station may determine a Doppler metric associated with a wireless channel and a user equipment (UE). The Doppler metric may be de- termined from received information related to Doppler effects measured by the UE or from directly measured Doppler effects associated with uplink data re- ceived from the UE. Based on the determined Doppler metric, the base station may select one or both of a reference signal (RS) density and a channel esti- mation technique for the wireless channel and associated UE. The base station may transmit an indication of the RS density to the UE. Downlink data bursts and uplink data bursts may include RSs and data according to the indicated RS density. Further, the base station may transmit to the UE, an indication to com- municate using the selected wireless channel estimation technique.