Patent SG-11201809124S-A (SG)
Title: Rach design for beamformed communications
Inventor: AKKARAKARAN SONY
IPC: H04W74/08
Filed: 2017-05-12
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 14 December 2017 (14.12.2017) W I PO I PCT 0111111010 0111 inn Hol mo Imo lII oiml (10) International Publication Number WO 2017/213797 Al (51) International Patent Classification: H04W 74/08 (2009.01) HO4B 7/00 (2006.01) (21) International Application Number: PCT/US2017/032469 (22) International Filing Date: 12 May 2017 (12.05.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/348,797 10 June 2016 (10.06.2016) US 15/433,738 15 February 2017 (15.02.2017) US (71) Applicant: QUALCOMM INCORPORATED [US/US]; ATTEN: International IP Administration, 5775 Morehouse Drive, San Diego, California, US 92121-1714 (US). (72) Inventors: AKKARAKARAN, Sony; 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). ISLAM, Muhammad Naz- mul; c/o QUALCOMM INCORPORATED, 5775 More- house Drive, San Diego, California 92121-1714 (US). SADIQ, Bilal; c/o QUALCOMM INCORPORATED, 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, (54) Title: RACH DESIGN FOR BEAMFORMED COMMUNICATIONS 700 702 N N receive a beam-formed message from a base station during a RACH procedure 704 determine beam information based on the received beam-formed message during the RACH procedure 706 multiplex the determined beam information as' UCI with a payload of the message for I transmission during the RACH procedure I I _1••• • ' 712 transmit a message to the base station during the RACH procedure that includes the determined beam information 708 I determine an offset value for multiplexing the I determined beam information with the I payload —the offset value indicating a ratio of I UCI modulation symbols to payload I modulation symbols 710 I multiplex the determined beam information based on the determined offset value J FIG. 7 M (57) : In a mmW network, a UE and a base station may establish a link using a RACH procedure. Because mmW and other band communications may rely on accurate beamforming to overcome link attention, the UE may need to provide beam information feedback - to the base station. In particular, the UE may receive a beam-formed message from the base station during the RACH procedure. The 1-1 UE may determine beam information based on the received beam-formed message during the RACH procedure. The UE may transmit © a message to the base station during the RACH procedure, and the message may include the determined beam information. C [Continued on next page] WO 2017/213797 Al MIDEDIMOMOIDEIRMEM00110100ERDERVOIMIE 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). Declarations under Rule 4.17: as to applicant's entitlement to apply for and be granted a patent (Rule 4.17(H)) as to the applicant's entitlement to claim the priority of the earlier application (Rule 4.17(iii)) Published: — with international search report (Art. 21(3))