Patent SG-11201808344U-A (SG)
Title: Enhanced puncturing and low-density parity-check (ldpc) code structure
Inventor: RICHARDSON THOMAS JOSEPH
IPC: H03M13/11
Filed: 2017-05-12
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property C.--.` Organization 03 11111110111101111111111111111111111 01110111110111111011110011111111101111011111 International Bureau (10) International Publication Number (43) International Publication Date .../ WO 2017/197267 Al 16 November 2017 (16.11.2017) WIPO I PCT (51) International Patent Classification: AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, H03M 13/11 (2006.01) H03M 13/03 (2006.01) CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, (21) International Application Number: DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, PCT/US2017/032413 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, (22) International Filing Date: MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, 12 May 2017 (12.05.2017) PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, (25) Filing Language: English 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. (26) Publication Language: English (84) Designated States (unless otherwise indicated, for every (30) Priority Data: kind of regional protection available): ARIPO (BW, GH, 62/335,163 12 May 2016 (12.05.2016) US GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, 15/593,035 11 May 2017 (11.05.2017) US UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, (71) Applicant: QUALCOMM INCORPORATED [US/US]; EE, ES, FL FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, ATTN: International IP Administration, 5775 Morehouse MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, Drive, San Diego, California 92121-1714 (US). TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, (72) Inventors: RICHARDSON, Thomas Joseph; 5775 More- KM, ML, MR, NE, SN, TD, TG). house Drive, San Diego, California 92121-1714 (US). _ KUDEKAR, Shrinivas; 5775 Morehouse Drive, San Published: Diego, California 92121-1714 (US). — with international search report (Art. 2 I (3)) = (74) Agent: READ, Randol W. et al.; Patterson & Sheridan, L.L.P., 24 Greenway Plaza, Suite 1600, Houston, Texas 77046-2472 (US). = (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, = = = (54) Title: ENHANCED PUNCTURING AND LOW-DENSITY PARITY-CHECK (LDPC) CODE STRUCTURE 1300 (57) : Certain aspects of the present disclosure generally relate to techniques for enhanced puncturing and low-density parity-check (LD- - = — r 1302 PC) code structure. A method for wireless communications by a transmit- = ting device is provided. The method generally includes encoding a set of - ENCODE A SET OF INFORMATION errs BASED ON A LOW DENSITY PARITY CHECK (LDPC) CODE TO PRODUCE A CODE WORD, THE LDPC information bits based on a LDPC code to produce a code word, the LD- = CODE DEFINED BY A BASE VIM RIX HAVING A FIRS!' NUIVIBER OF PC code defined by a base matrix having a first number of variable nodes = VARIABLE NODES ANI) A SF.COND NUMBER OF CHECK NODF:S, and a second number of check nodes; puncturing the code word accord- ing to a puncturing pattern designed to puncture bits corresponding to at = = r 1304 least two of the variable nodes to produce a punctured code word; adding at least one additional parity bit for the at least two punctured variable nodes; and transmitting the punctured code word. = 7 = PUNCTURE THE CODE WORD ACCORDING TO A PUNCTURING PATTERN DESIGNED TO PUNCTURE BITS CORRESPONDING TO AT LEAST = TWO OF THE VARIABLE NODES ( -1306 11 ADD AT LEAST ONE ADDITIONAL PARITY BIT FOR THE AT LEAST IN TWO PUNCTURED VARIABLE NODES N N t:T r 1308 11 ,-.... IN TRANSMIT THE PI ENCTURED CODE WORD 11 © N • C