Patent SG-11201905290S-A (SG)
Title: Techniques and apparatuses for channel interference reduction
Inventor: RICO ALVARINO ALBERTO
IPC: H04L1/08
Filed: 2018-01-05
Abstract: First Block Second Block FIG. 5 So Si 215111EIREEPIE First repetition Second Apply a first processing Repetition stage and a second processing stage to a first physical broadcast channel based at least in part on a first cell BS identifier 110-1 First repetition Second Repetition Desired Transmission Ij UE 120 1 Interefering Transmission ) Reverse the first processing stage and the second processing stage based at least in part on the first cell identifier 11.O (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 02 August 2018 (02.08.2018) WIP0 I PCT onion °nolo DID HO 1101 OH 010 11011111° oimIE (10) International Publication Number WO 2018/140210 Al (51) International Patent Classification: H04L 1/08 (2006.01) HO4J 11/00 (2006.01) (21) International Application Number: PCT/US2018/012616 (72) (22) International Filing Date: 05 January 2018 (05.01.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 201741003102 27 January 2017 (27.01.2017) IN 62/458,353 13 February 2017 (13.02.2017) US 62/459,409 15 February 2017 (15.02.2017) US 15/661,860 27 July 2017 (27.07.2017) US (71) Applicant: QUALCOMM INCORPORATED [US/US]; ATTN: International IP Administration, 5775 Morehouse Drive, San Diego, California 92121-1714 (US). Inventors: RICO ALVARINO, Alberto; 5775 More- house Drive, San Diego, California 92121 (US). BHAT- TAD, Kapil; 5775 Morehouse Drive, San Diego, Califor- nia 92121 (US). WANG, Xiao feng; 5775 Morehouse Dri- ve, San Diego, California 92121 (US). MONTOJO, Juan; 5775 Morehouse Drive, San Deigo, California 92121 (US). CHEN, Wanshi; 5775 Morehouse Drive, San Diego, Cali- fornia 92121 (US). GAAL, Peter; 5775 Morehouse Drive, San Diego, California 92121 (US). (74) Agent: HARRITY, John E. et al.; 11350 Random Hills Road, Suite 600, Fairfax, Virginia 22030 (US). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, (54) Title: TECHNIQUES AND APPARATUSES FOR CHANNEL INTERFERENCE REDUCTION Apply a first processing stage and a second processing stage to a second physical broadcast channel based at least in part on a second cell BS identifier 110-2 Desired Transmission L1 AAA UE 120-2 Reverse the first processing stage and the second processing stage based at least in part on the second cell identifier 1-1 O 1-1 N O 1-1 00 1-1 O N C 510 520 and 530 540 (57) : A base station (BS) may transmit, and a user equipment (UE) may receive, a physical broadcast channel, such as a narrowband physical broadcast channel (NB-PBCH). In an interference-limited scenario with synchronous cells in a network, repetitions of a symbol being transmitted for a first physical broadcast channel of a first cell may collide with repetitions of a symbol being transmitted for a second physical broadcast channel of a second cell. This may result in the UE being unable to recover symbols of a physical broadcast channel. In some aspects, the BS may transmit, and the UE may receive, a physical broadcast channel including bits processed using a first processing stage, such as using first scrambling sequences, and a second processing stage, such as using second scrambling sequences, to compensate for the interference, thereby ensuring that the UE can recover the symbols of the physical broadcast channel. [Continued on next page] WO 2018/140210 Al I IIIII IIIIIIII II11101IIIII IIIII VIII VIII 3010H01101 IIIII 010 110 MEM 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, 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). 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))