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    Encoding and decoding techniques
    1.
    发明专利
    Encoding and decoding techniques 未知

    公开(公告)号：AU2017333145B2

    公开(公告)日：2022-02-17

    申请号：AU2017333145

    申请日：2017-07-11

    Applicant: QUALCOMM INC

    Inventor： XU CHANGLONG ,  KUDEKAR SHRINIVAS ,  RICHARDSON THOMAS ,  SORIAGA JOSEPH BINAMIRA

    IPC: H04L1/18

    Abstract: Various aspects of the disclosure relate to encoding information and decoding information. In some aspects, the disclosure relates to an encoder and a decoder for Polar codes with HARQ. If a first transmission of the encoder fails, information bits associated with a lower quality channel may be retransmitted. At the decoder, the resulting decoded retransmitted bits may be used to decode the first transmission by substituting the retransmitted bits for the original corresponding (low quality channel) bits. In some aspects, to decode the first transmission, soft-combining is applied to the decoded retransmitted bits and the original corresponding (low quality channel) bits. In some aspects, CRC bits for a first transmission may be split between a first subset of bits and a second subset of bits. In this case, the second subset of bits and the associated CRC bits may be used for a second transmission (e.g., a retransmission).

    CONSTRUCTING PARITY CHECK MATRICES WITH ROW-ORTHOGONALITY FOR RATE COMPATIBLE QC-LDPC CODES
    2.
    发明专利
    CONSTRUCTING PARITY CHECK MATRICES WITH ROW-ORTHOGONALITY FOR RATE COMPATIBLE QC-LDPC CODES 未知

    公开(公告)号：SG11201909120PA

    公开(公告)日：2019-11-28

    申请号：SG11201909120P

    申请日：2018-05-10

    Applicant: QUALCOMM INC

    Inventor： RICHARDSON THOMAS

    IPC: H03M13/11

    Abstract: OO O O (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 15 November 2018 (15.11.2018) ill Hu omits I io 10 0101011011011111 OM REHM 011 (10) International Publication Number WO 2018/209035 Al WIPO I PCT (51) International Patent Classification: H03M 13/11 (2006.01) (21) International Application Number: PCT/US2018/031988 (22) International Filing Date: 10 May 2018 (10.05.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/505,573 12 May 2017 (12.05.2017) US 15/975,440 09 May 2018 (09.05.2018) US (71) Applicant: QUALCOMM INCORPORATED [US/US]; ATTN: International IP Administration, 5775 Morehouse Drive, San Diego, California 92121-1714 (US). (72) Inventor: RICHARDSON, Thomas; 5775 Morehouse Drive, San Diego, California 92121-1714 (US). (74) Agent: KENT, Preston E. 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, 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. (54) Title: CONSTRUCTING PARITY CHECK MATRICES WITH ROW-ORTHOGONALITY FOR RATE COMPATIBLE QC- LDPC CODES 1400 r 1402 RECEIVE SOFT BITS ASSOCIATED TO AN LDPC CODEWORD r 1404 PERFORM LDPC DECODING OF THE SOFT BITS USING A PARITY CHECK MATRIX, WHEREIN: EACH ROW OF THE PARITY CHECK MATRIX CORRESPONDS TO A LIFTED PARITY CHECK OF A LIFTED LDPC CODE, AT LEAST TWO COLUMNS OF THE PARITY CHECK MATRIX CORRESPOND TO PUNCTURED VARIABLE NODES OF THE LIFTED LDPC CODE, AND THE PARITY CHECK MATRIX HAS ROW ORTHOGONALITY BETWEEN EACH PAIR OF CONSECUTIVE ROWS THAT ARE BELOW A ROW TO WHICH THE AT LEAST TWO PUNCTURED VARIABLE NODES ARE BOTH CONNECTED FIG. 14 (57) : Certain aspects of the present disclosure generally relate to methods and apparatus for decoding quasi-cyclic low- density parity check (QC-LDPC) rate-compatible codes, for example, using a parity check matrix comprising first layers according to a high-rate core graph and second layers for HARQ transmission, where the parity check matrix has quasi row-orthogonality or full row-orthogonality within the second layers. An exemplary method for performing low-density parity-check (LDPC) decoding includes receiving soft bits associated to an LDPC codeword and performing LDPC decoding of the soft bits using a parity check matrix, wherein each row of the parity check matrix corresponds to a lifted parity check of a lifted LDPC code, at least two columns of the parity check matrix correspond to punctured variable nodes of the lifted LDPC code, and the parity check matrix has row orthogonality between each pair of consecutive rows that are below a row to which the at least two punctured variable nodes are both connected. [Continued on next page] WO 2018/209035 Al MIDEDIMOMMIDIIMERIHNONIMOIMIOMMOVOIS (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). Published: — with international search report (Art. 21(3))

    NESTED STRUCTURE FOR POLAR CODE CONSTRUCTION USING DENSITY EVOLUTION
    3.
    发明专利
    NESTED STRUCTURE FOR POLAR CODE CONSTRUCTION USING DENSITY EVOLUTION 未知

    公开(公告)号：CA3042957A1

    公开(公告)日：2018-07-05

    申请号：CA3042957

    申请日：2017-07-06

    Applicant: QUALCOMM INC

    Inventor： XU CHANGLONG ,  WU GAOJIN ,  RICHARDSON THOMAS ,  HOU JILEI

    IPC: H04L1/00

    Abstract: Aspects of the disclosure relate to wireless communication devices configured to generate polar codewords utilizing a single master sequence constructed using density evolution with a nested structure for identifying the frozen bit locations and information bit locations. This single master sequence may be used for any codeword length N up to a maximum codeword length Nmax, and may further be utilized for any code rate R. For example, from the master sequence of length Nmax, a bit location sequence S with codeword length N (where N

    CODING SCHEMES FOR WIRELESS COMMUNICATION TRANSMISSIONS
    7.
    发明专利
    CODING SCHEMES FOR WIRELESS COMMUNICATION TRANSMISSIONS 未知

    公开(公告)号：CA2664918C

    公开(公告)日：2014-06-03

    申请号：CA2664918

    申请日：2007-10-26

    Applicant: QUALCOMM INC

    Inventor： RICHARDSON THOMAS ,  KHANDEKAR AAMOD

    IPC: H04L1/00 ,  H04L1/18

    Abstract: Systems and methodologies are described that facilitate transmitting low-density parity-check encoded communications in a wireless communications network and incrementing such codes in response to requests from receiving devices. The LDPC codes can have associated constraints allowing the codes to be error corrected upon receipt. The requests for incremented codes can be in cases of low transmission power or high interference, for example, where the original code can be too error-ridden to properly decode. In this case, additional nodes can be added to current and/or subsequent communications to facilitate adding a more complex constraint to the LDPC code. In this regard, the large codes can require less validly transmitted nodes to predict error-ridden values as the additional constraint renders less ambiguity in possible node value choices.

    Methods and apparatus for wireless communications including direct paging in combination with hopped data signaling
    8.
    发明专利
    Methods and apparatus for wireless communications including direct paging in combination with hopped data signaling 未知

    公开(公告)号：AU2009223396B2

    公开(公告)日：2013-11-07

    申请号：AU2009223396

    申请日：2009-02-24

    Applicant: QUALCOMM INC

    Inventor： WU XINZHOU ,  PARK VINCENT D ,  LI JUNYI ,  TAVILDAR SAURABH ,  LAROIA RAJIV ,  RICHARDSON THOMAS

    IPC: H04W88/04

    Abstract: Methods and apparatus for wireless communications in regional networks, e.g., ad hoc peer to peer networks, are described. Wireless communications devices transmit and monitor for presence indicator signals broadcast from other peer communications devices in its local vicinity. A wireless communications device maintains a list of discovered devices in its vicinity. A first wireless communications device transmits a paging signal directly over an airlink to a second communications device, which is on its list and to which it desires to send data units, e.g., user data in a peer to peer traffic segment. In response to a received paging response signal from the second device, the first device transmits data units, intended for the second device, to a third device, which acts as an intermediary node. The power level for the data unit signal is controlled to be lower than the power level used for the paging signal.

    9.
    发明专利
    未知

    公开(公告)号：BRPI0717729A2

    公开(公告)日：2013-10-29

    申请号：BRPI0717729

    申请日：2007-10-26

    Applicant: QUALCOMM INC

    Inventor： RICHARDSON THOMAS ,  KHANDEKAR AAMOD

    IPC: H04L1/00 ,  H04L1/18

    Abstract: Systems and methodologies are described that facilitate transmitting low-density parity-check encoded communications in a wireless communications network and incrementing such codes in response to requests from receiving devices. The LDPC codes can have associated constraints allowing the codes to be error corrected upon receipt. The requests for incremented codes can be in cases of low transmission power or high interference, for example, where the original code can be too error-ridden to properly decode. In this case, additional nodes can be added to current and/or subsequent communications to facilitate adding a more complex constraint to the LDPC code. In this regard, the large codes can require less validly transmitted nodes to predict error-ridden values as the additional constraint renders less ambiguity in possible node value choices.

    Procedimientos y aparatos de comunicación inalámbrica utilizando señales de baliza
    10.
    发明专利
    Procedimientos y aparatos de comunicación inalámbrica utilizando señales de baliza 未知

    公开(公告)号：ES2427132T3

    公开(公告)日：2013-10-28

    申请号：ES10189182

    申请日：2007-01-11

    Applicant: QUALCOMM INC

    Inventor： LAROIA RAJIV ,  LANE FRANK A ,  LI JUNYI ,  RICHARDSON THOMAS

    IPC: H04W40/24 ,  H04W8/00 ,  H04W36/16 ,  H04W36/24 ,  H04W48/08 ,  H04W52/04 ,  H04W72/02 ,  H04W72/06 ,  H04W74/00 ,  H04W74/08 ,  H04W76/04 ,  H04W84/04 ,  H04W84/18 ,  H04W88/04 ,  H04W88/06

    Abstract: Un método para comunicaciones inalámbricas, que comprende: transmitir (1408), desde una estación base (108, 302, 704, 2500, 2700), una señal de baliza (402) en una primera banda de frecuencia, la señal de baliza (402) proporcionando información de sincronización de tiempo a una pluralidad de terminales inalámbricos (102, 104, 304, 706, 802, 804, 852, 854) usando la estación base (108, 302, 704, 2500, 2700) como nodo de acceso, en donde la posición en el tiempo de las ráfagas de señales de baliza (404, 406, 408, 1010, 1016, 1022, 1028, 1034, 1040, 1046, 1052, 3320, 3322, 3330) que están contenidas dentro de la señal de baliza (402) saltan de una ranura (3308, 3310, 3312) a la siguiente (3308, 3310, 3312) de acuerdo con una función de salto utilizada por el terminal (102, 104, 304, 706, 802, 804, 852, 854) como una función de un identificador de terminal inalámbrico, un identificador de usuario y/o un valor del nivel de prioridad ; recibir (1410) datos en la primera banda de frecuencias de la pluralidad de terminales inalámbricos (102, 104, 304, 706, 802, 804, 852, 854) para la comunicación a través de la estación base (108, 302, 704, 2500, 2700) actuando como nodo de acceso; y transmitir (1412) datos de usuario a la pluralidad de terminales inalámbricos (102, 104, 304, 706, 802, 804, 852, 854) en la primera banda de frecuencias.

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