Patent SG-11201905916S-A (SG)
Title: Low density parity check (ldpc) circular buffer rate matching
Inventor: SORIAGA JOSEPH BINAMIRA
IPC: H03M13/11
Filed: 2018-02-13
Abstract: WO 18/ 1487 42 A (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization ill~~~~~~~~ 011101VIIIVIIIVIII olo How VIII ow International Bureau (10) International Publication Number WO 2018/148742 Al (43) International Publication Date 16 August 2018 (16.08.2018) WIPO I PCT 1100 St 1108 including systematic mid park,: u (51) International Patent Classification: H03M 13/11 (2006.01) H04L 1/18 (2006.01) H03M 13/00 (2006.01) H0311113/09 (2006.01) (21) International Application Number: PCT/US2018/018034 (22) International Filing Date: 13 February 2018 (13.02.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/458,495 13 February 2017 (13.02.2017) US 15/894,197 12 February 2018 (12.02.2018) 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). KUDEKAR, Shrinivas; 304 Bencer Court, Raritan, NJ 08869 (US). RICHARDSON, Thomas Joseph; 5775 Morehouse Drive, San Diego, California 92121-1714 (US). JIANG, Jing; 5775 Morehouse Drive, San Diego, Califor- nia 92121-1714 (US). WANG, Renqiu; 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: LOW DENSITY PARITY CHECK (LDPC) CIRCULAR BUFFER RATE MATCHING (57) : Aspects of the present disclosure relate to low density parity check (LDPC) coding utilizing a configurable circular buffer for rate matched transmissions such as IR- HARQ transmission. The circular buffer may be configured based on a selected mother code rate and a fixed circular buffer length. For example, the respective sizes of the systematic Prov ide fixed length circular buffer H1102 and parity bit sections of the circular buffer may be variable based on the selected mother code rate. Select mother code rate for circular buffer H1104 Define systematic bit and parity bit sections of the circular buffer based on selected mother code rate 1106 H Encode information block to produce codeword fins systematic and parity bits into circular 1110 buffer Select coded bits for redundancy version of 1112 codeword from circular buffer Transmit redundancy version to receiver over wireless air interface 1114 End FIG. 11 [Continued on next page] WO 2018/148742 Al MIDEDIMOMMIDEFIEOMMIUMEIfiliMEHOIMIE Published: — with international search report (Art. 21(3))