Patent SG-11201807611Y-A (SG)
Title: Beam reference signal based narrowband channel measurement and cqi reporting
Inventor: ISLAM MUHAMMAD NAZMUL
IPC: H04B7/08
Filed: 2017-03-27
Abstract: 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 IiiimmoimiolollmolommomolmomlluommovoimIE (10) International Publication Number WO 2017/184304 Al (51) International Patent Classification: HO4B 7/0417 (2017.01) H04B 7/08 (2006.01) HO4B 7/06 (2006.01) (21) International Application Number: PCT/US2017/024346 (22) International Filing Date: 27 March 2017 (27.03.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/324,861 19 April 2016 (19.04.2016) US 62/335,630 12 May 2016 (12.05.2016) US 15/468,825 24 March 2017 (24.03.2017) US (71) Applicant: QUALCOMM INCORPORATED [US/US]; ATTEN: International IP Administration, 5775 Morehouse Drive, San Diego, California, US 92121-1714 (US). (72) Inventors: ISLAM, Muhammad Nazmul; c/o QUAL- COMM INCORPORATED, 5775 Morehouse Drive, San Diego, California 92121-1714 (US). LUO, Tao; c/o QUAL- COMM INCORPORATED, 5775 Morehouse Drive, San Diego, California 92121-1714 (US). SADIQ, Bilal; c/o QUALCOMM INCORPORATED, 5775 Morehouse Dri- ve, San Diego, California 92121-1714 (US). CEZANNE, Juergen; c/o QUALCOMM INCORPORATED, 5775 Morehouse Drive, San Diego, California 92121-1714 (US). SUBRAMANIAN, Sundar; c/o QUALCOMM INCOR- PORATED, 5775 Morehouse Drive, San Diego, California 92121-1714 (US). LI, Junyi; c/o QUALCOMM INCOR- PORATED, 5775 Morehouse Drive, San Diego, California 92121-1714 (US). (74) Agent: HODGES, Jonas J. et al.; c/o ARENT FOX LLP, 1717 K Street NW, Washington, District of Columbia 20006-5344 (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, (54) Title: BEAM REFERENCE SIGNAL BASED NARROWBAND CHANNEL MEASUREMENT AND CQI REPORTING (57) : When beamforming (e.g., via a millimeter wave system (mmW)) is used for wireless communication, a base station may transmit beams that are directed to certain directions. Due to the directional nature of the beams in the mmW system, an approach to determine a beam that 1104 provides a desirable gain is studied. The apparatus may be a user equip- 1112 ment (UE). The apparatus receives, from a base station, a plurality of sig- Ignals(8888 , 1112128e/C81-R8s) Spnbol 0 nals through a plurality of beams of the base station, each of the plurality of beams corresponding to a respective antenna port of a plurality of an- tenna ports of the base station. The apparatus performs channel estimation for each beam of the plurality of beams from the plurality of antenna ports based on the plurality of signals. The apparatus transmits, to the base sta- tion, a feedback signal including information about one or more beams se- whose iiaformation Is to be fal back xlmbei of barns lected from the plurality of beams, the feedback signal further including one or more candidate uplink precoders. 1100 1122., 1102 1118 Signets (FIRSWBRRS•/C81-123s) 1114 Signals (BRSs/BRRSVCSIRSs) Symbol I 4 Symbol 13 Dete mine M bat ds for N b ams 1124 Feedback Information 6 W O 20 17 / 18 430 4 Al Select beam fo DL seb &Jib 1128 DL communicati n FIG. 11 [Continued on next page] WO 2017/184304 Al MIDEDIMOMOIDEIROIDEMOMMMOIMIIIIMEMOVOIS 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))