Patent SG-11201807610X-A (SG)
Title: Beam reference signal based narrowband channel measurement and cqi reporting
Inventor: ISLAM MUHAMMAD NAZMUL
IPC: H04B7/06
Filed: 2017-03-27
Abstract: Symbol 0 Symbol 1 Symbol 13 1126 (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 omit IIl Hot o oimIE (10) International Publication Number WO 2017/184302 Al (51) International Patent Classification: HO4B 7/0417 (2017.01) H04B 7/06 (2006.01) (21) International Application Number: PCT/US2017/024335 (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 15/468,594 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 Qualcomm Incorporated, 5775 Morehouse Drive, San Diego, California 92121-1714 (US). LUO, Tao; c/o Qualcomm Incorporated, 5775 Morehouse Drive, San Diego, California 92121-1714 (US). SADIQ, Bilal; c/o Qualcomm Incorporated, 5775 Morehouse Drive, 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 Incorporated, 5775 Morehouse Drive, San Diego, California 92121-1714 (US). LI, Junyi; c/o Qualcomm Incorporated, 5775 More- house 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, 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, (54) Title: BEAM REFERENCE SIGNAL BASED NARROWBAND CHANNEL MEASUREMENT AND CQI REPORTING (57) : When beamforming (e.g., via a millimeter wave system 1100 (mmW)) is used for wireless communication, a base station may trans- mit 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 provides a desirable gain is studied. The apparatus may be a user equipment (UE). The apparatus receives, from a base station, a plurality of signals 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 antenna ports of the base station, where the plurality of signals include a plurality of beam reference signals, a plurality of beam refinement reference signals, a plurality of channel state information reference signals (CSI-RSs), or a combination thereof. The apparatus performs channel estimation for each beam of the plurality of beams whose information is to be fed back Number of beame from the plurality of antenna ports based on the plurality of signals. 1102 1112 Signals (BRSs/BRASs'(S1.113s) 1114 Signals (BRSVBRASs/C211.16SM 1118 Signals (BRSO3RRSa/CSIASs) 1120 W O 20 17 / 18 430 2 Al 1122., Date mine M ba ds for N b ams 1124 Feedback Information 1128 DL communi6atio FIG. 11 Select beam fo Di. sea doling [Continued on next page] WO 2017/184302 Al MIDEDIMOHIMIRMEMOMMEINIMiliEVOIMIE 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))