SG11201911638SA - Communication techniques applying low-density parity-check code base graph selection - Google Patents

Abstract

1502 W O 20 19/0 18120 Al RECEIVE, BY A 'TRANSCEIVER CIRCUIT USING ONL OR MORE ANTLNNAELLMLIVIS LN 1,LECIRICAL COIUMUMCAIION Wrill THU TRA_NSCEIVER CIRCUIT, CONTROL INFORMATION INDICATING A MODULATION AND CODING SCIILML (MC S1 AND A RESOURCE ALLOCATION (RA) FOR TRANSMISSION OF A CODEWORD 1504 SELECT, BY THE PROCESSOR AND BASED ON THE \ ICS AND THE RA, A BASE GRAPH (BG), FROM WH CH TO DERIVE A TOW DENSITY PARITY CHECK (TITC) CODE FOR USE TN DECODING THE. CODEWORD 1506 RECEIVE, BY THE TRANSCEIVER C IRCUIT USING THE ONE OR MORE ANTENNA ELEMENTS, THE CODEWORD VIA RESOURCES OF THE RA ( -1508 DECODE, BY A DECODER CIRCUIT, THE CODEWORD USING THE LDPC CODE DERIVED FROM THE SELECTED BG FIG. 15 (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 24 January 2019 (24.01.2019) WIP0 I PCT omit III m m1111E11 oimIE (10) International Publication Number WO 2019/018120 Al (51) International Patent Classification: HO4L 1/00 (2006.01) (21) International Application Number: PCT/US2018/040507 (22) International Filing Date: 30 June 2018 (30.06.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/529,765 17 July 2017 (17.07.2017) US 16/023,807 29 June 2018 (29.06.2018) US (71) Applicant: QUALCOMM INCORPORATED [US/US]; International IP Administration, 5775 Morehouse Drive, San Diego, CA 92121-1714 (US). (72) Inventors: PATEL, Shimman, Arvind; 5775 Morehouse Drive, San Diego, CA 92121-1714 (US). SORIAGA, Joseph, Binamira; 5775 Morehouse Drive, San Diego, CA 92121-1714 (US). SARKIS, Gabi; 5775 Morehouse Drive, San Diego, CA 92121-1714 (US). NAMGOONG, June; 5775 Morehouse Drive, San Diego, CA 92121-1714 (US). (74) Agent: KENT, Preston, E. et al.; Patterson & Sheri- dan, L.L.P., 24 Greenway Plaza, Suite 1600, Houston, TX 77046-2472 (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: COMMUNICATION TECHNIQUES APPLYING LOW-DENSITY PARITY-CHECK CODE BASE GRAPH SELEC- TION (57) : Certain aspects of the present disclosure generally relate to tech- niques for selecting a base graph to be used for wireless communications. Selec- tion can be based on a variety of factors. Abase graph can be used to derive a low-density parity-check (LDPC) code used for encoding a retransmission of an original transmission. An exemplary method generally includes selecting, based on a modulation and coding scheme (MCS) and a resource allocation (RA) for transmitting a codeword, a base graph (BG), from which to derive a low density parity check (LDPC) code for use in encoding data bits in the codeword (e.g., encoding data bits of a bitstream such that some redundant bits are included in the codeword), encoding the data bits to generate the codeword using the LDPC code derived from the selected BG, and transmitting the code- word using the MCS via resources of the RA. [Continued on next page] WO 2019/018120 Al MIDEDIMOMMIONIZEMOTHEIMIDEIHMOVOIS Published: — with international search report (Art. 21(3))