公开(公告)号：US20200053687A1

公开(公告)日：2020-02-13

申请号：US16659290

申请日：2019-10-21

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar JOVICIC ,  Thomas RICHARDSON ,  Cyril MEASSON

IPC: H04W64/00 ,  G01S13/87 ,  G01S5/00

Abstract: Mobile devices are used as temporary location anchor points, e.g., to supplement fixed location permanent location anchor points, in a wireless communications system in which mobile device locations are determined. A mobile device receives a command or request to operate as a location anchor point. In some embodiments, the command includes time information indicating the amount of time the mobile device is to operate as a location anchor point. In some embodiments, a mobile device operating as a location anchor point reports a received signal strength measurement along with information identifying the device from which the signal was received to a network element, e.g., a location server node. In some embodiments, a mobile device operating as a location anchor point broadcasts a signal providing location information. The mobile device receives compensation for operating as a location anchor point. Compensation may be monetary, services, or benefits provided by the network.

公开(公告)号：US20180367245A1

公开(公告)日：2018-12-20

申请号：US16011530

申请日：2018-06-18

Applicant: QUALCOMM Incorporated

Inventor： Joseph Binamira SORIAGA ,  Shrinivas KUDEKAR ,  Thomas RICHARDSON ,  Gabi SARKIS ,  Hari SANKAR ,  Jing JIANG

IPC: H04L1/00 ,  H04L1/18 ,  H03M13/11

Abstract: The present disclosure provides self-decodable redundancy versions for a systematic code. An apparatus for wireless communications includes at least one processor coupled with a memory and comprising encoder circuitry configured to encode a set of information bits using a systematic code to generate an encoded bit stream with information bits and parity bits, and bit ordering circuitry configured to re-order bits in the encoded bit stream to distribute the information bits and the parity bits. The apparatus includes a transmitter configured to transmit the re-ordered bits in accordance with a radio technology via one or more antenna elements situated proximate the receiver.

公开(公告)号：US20200266832A1

公开(公告)日：2020-08-20

申请号：US16867330

申请日：2020-05-05

Applicant: QUALCOMM Incorporated

Inventor： Thomas RICHARDSON

IPC: H03M13/11 ,  H04L1/00 ,  H03M13/00 ,  H04L1/18

Abstract: Certain aspects of the present disclosure generally relate to methods and apparatus for decoding low-density parity check (LDPC) codes, for example, using a parity check matrix having full row-orthogonality. 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.

公开(公告)号：US20180205498A1

公开(公告)日：2018-07-19

申请号：US15919303

申请日：2018-03-13

Applicant: QUALCOMM Incorporated

Inventor： Shrinivas KUDEKAR ,  Thomas RICHARDSON

IPC: H04L1/00 ,  H03M13/09 ,  H03M13/37 ,  H03M13/00

CPC classification number: H04L1/0063 ,  H03M13/09 ,  H03M13/098 ,  H03M13/13 ,  H03M13/3738 ,  H03M13/3977 ,  H03M13/612 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/0054 ,  H04L1/0057 ,  H04L1/0061

Abstract: Certain aspects of the present disclosure relate to techniques and apparatus for improving decoding latency and performance of Polar codes. An exemplary method generally includes generating a codeword by encoding information bits, using a multi-dimensional interpretation of a polar code of length N, determining, based on one or more criteria, a plurality of locations within the codeword to insert error correction codes generating the error correction codes based on corresponding portions of the information bits, inserting the error correction codes at the determined plurality of locations, and transmitting the codeword. Other aspects, embodiments, and features are also claimed and described.

公开(公告)号：US20240089897A1

公开(公告)日：2024-03-14

申请号：US18507921

申请日：2023-11-13

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar JOVICIC ,  Thomas RICHARDSON ,  Cyril MEASSON

IPC: H04W64/00 ,  G01S5/00 ,  G01S13/87

CPC classification number: H04W64/00 ,  G01S5/0027 ,  G01S13/878 ,  H04W88/04

Abstract: Mobile devices are used as temporary location anchor points, e.g., to supplement fixed location permanent location anchor points, in a wireless communications system in which mobile device locations are determined. A mobile device receives a command or request to operate as a location anchor point. In some embodiments, the command includes time information indicating the amount of time the mobile device is to operate as a location anchor point. In some embodiments, a mobile device operating as a location anchor point reports a received signal strength measurement along with information identifying the device from which the signal was received to a network element, e.g., a location server node. In some embodiments, a mobile device operating as a location anchor point broadcasts a signal providing location information. The mobile device receives compensation for operating as a location anchor point. Compensation may be monetary, services, or benefits provided by the network.

公开(公告)号：US20200021309A1

公开(公告)日：2020-01-16

申请号：US16336213

申请日：2017-07-11

Applicant: QUALCOMM Incorporated

Inventor： Changlong XU ,  Shrinivas KUDEKAR ,  Thomas RICHARDSON ,  Joseph Binamira SORIAGA

IPC: H03M13/09 ,  H03M13/11 ,  H03M13/29 ,  H03M13/13

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).

公开(公告)号：US20190013827A1

公开(公告)日：2019-01-10

申请号：US15975440

申请日：2018-05-09

Applicant: QUALCOMM Incorporated

Inventor： Thomas RICHARDSON

IPC: H03M13/11 ,  H03M13/00 ,  H04L1/18

Abstract: Certain aspects of the present disclosure generally relate to methods and apparatus for decoding low-density parity check (LDPC) codes, for example, using a parity check matrix having full row-orthogonality. 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.

公开(公告)号：US20230030277A1

公开(公告)日：2023-02-02

申请号：US17817717

申请日：2022-08-05

Applicant: QUALCOMM Incorporated

Inventor： Thomas RICHARDSON

IPC: H03M13/11 ,  H03M13/00 ,  H04L1/00 ,  H04L1/18

Abstract: Certain aspects of the present disclosure generally relate to methods and apparatus for decoding low-density parity check (LDPC) codes, for example, using a parity check matrix having full row-orthogonality. 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.

公开(公告)号：US20180358984A1

公开(公告)日：2018-12-13

申请号：US16003047

申请日：2018-06-07

Applicant: QUALCOMM Incorporated

Inventor： Thomas RICHARDSON ,  Joseph Binamira SORIAGA ,  Shrinivas KUDEKAR ,  Gabi SARKIS

IPC: H03M13/11 ,  H04L1/00

CPC classification number: H03M13/1168 ,  H03M13/1137 ,  H03M13/114 ,  H03M13/1145 ,  H03M13/116 ,  H03M13/1185 ,  H03M13/618 ,  H03M13/6306 ,  H03M13/6393 ,  H03M13/6561 ,  H04L1/0057 ,  H04L5/0007

Abstract: Certain aspects of the present disclosure provide low-density parity-check (LDPC) codes having pairwise orthogonality of adjacent rows, and a new decoder that exploits the pairwise row orthogonality for flexible decoder scheduling without performance loss. An apparatus includes a receiver configured to receive a codeword in accordance with a radio technology across a wireless channel via one or more antenna elements situated proximal the receiver. The apparatus includes at least one processor coupled with a memory and comprising decoder circuitry configured to decode the codeword based on a LDPC code to produce a set of information bits. The LDPC code is stored in the memory and defined by a base matrix having columns in which all adjacent rows are orthogonal in a last portion of the rows.