Patent SG-11201905827R-A (SG)
Title: Multiple low density parity check (ldpc) base graph design
Inventor: SORIAGA JOSEPH BINAMIRA
IPC: H03M13/00
Filed: 2018-01-19
Abstract: MaintainLDPC base graphs, each associated thk ... a different Information block length rang foon c R a e t i e o i n ve l i o o o n c f l i r tn 'a be o e n n e b oloc d ek dtsIg a length n of an rate 904 n Select LDPC base graph hat supports information -v-s 908 block length Select LDPC base graph that suppo is code rate 912 Select LDPC base graph with the highest lift size 914 Encode information block using selected LDPC H 910 base graph to produce codeword Transmit codeword to receiver over wireless air H i , interface ( End FIG. 9 W O 20 18/ 14425 1 Al (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 09 August 2018 (09.08.2018) WIP0 I PCT onion °nolo mm0E111°1 Em oimIE (10) International Publication Number WO 2018/144251 Al (51) International Patent Classification: H03M 13/03 (2006.01) H03M 13/00 (2006.01) H03M 13/11 (2006.01) (21) International Application Number: PCT/US2018/014528 (22) International Filing Date: 19 January 2018 (19.01.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/455,450 06 February 2017 (06.02.2017) US 15/709,400 19 September 2017 (19.09.2017) US (71) Applicant: QUALCOMM INCORPORATED [US/US]; ATTN: International IP Administration, 5775 Morehouse Drive, San Diego, California 92121-1714 (US). (72) Inventors: SORIAGA, Joseph Binamira; 5775 More- house Drive, San Diego, California 92121-1714 (US). SARKIS, Gabi; 5775 Morehouse Drive, San Diego, Cal- ifornia 92121-1714 (US). KUDEKAR, Shrinivas; 304 Bencer Court, Raritan, NJ 08869 (US). RICHARDSON, Thomas; 5775 Morehouse Drive, San Diego, California 92121-1714 (US). LONCKE, Vincent; 5775 Morehouse Drive, San Diego, California 92121-1714 (US). (74) Agent: BURGESS, Jeffrey; Loza & Loza, LLP, 305 North Second Avenue #127, Upland, California 91786 (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, 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). (54) Title: MULTIPLE LOW DENSITY PARITY CHECK (LDPC) BASE GRAPH DESIGN (57) : Aspects of the present disclosure relate to low density parity check (LDPC) coding utilizing LDPC base graphs. Two or more LDPC base 900 graphs may be maintained that are associated with different ranges of overlap- ping information block lengths. A particular LDPC base graph may be selected for an information block based on the information block length of the informa- tion block. Additional metrics that may be considered when selecting the LDPC base graph may include the code rate utilized to encode the information block and/or the lift size applied to each LDPC base graph to produce the information block length of the information block. [Continued on next page] WO 2018/144251 Al MIDEDIM01101 OlD IIMEN0MMHOM111111011111111111111111111111 Declarations under Rule 4.17: as to applicant's entitlement to apply for and be granted a patent (Rule 4.17(11)) 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))