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    Polarization weight calculation for punctured polar code
    82.
    发明授权
    Polarization weight calculation for punctured polar code 有权

    公开(公告)号：US10862625B2

    公开(公告)日：2020-12-08

    申请号：US16476890

    申请日：2018-02-17

    Applicant: Qualcomm Incorporated

    Inventor： Yang Yang ,  Jing Jiang ,  Changlong Xu ,  Gabi Sarkis ,  Chao Wei ,  Hari Sankar ,  Jian Li ,  Joseph Binamira Soriaga

    IPC: H04L1/00 ,  H04L1/16 ,  H04L5/00 ,  H03M13/00

    Abstract: Techniques are described for wireless communication. One method includes identifying a set of punctured bit locations in a received codeword. The received codeword is encoded using a polar code. The method also includes identifying a set of information bit locations of the polar code, with the set of information bit locations being determined based at least in part on polarization weights per polarized bit-channel of a polar code decoder that are a function of nulled repetition operations per polarization stage of the polar code identified based at least in part on the set of punctured bit locations. The method further includes processing the received codeword using the polar code decoder to obtain an information bit vector at the set of information bit locations.

    CELL-BASED TRANSMISSION PRIORITY
    83.
    发明申请
    CELL-BASED TRANSMISSION PRIORITY 审中-公开

    公开(公告)号：US20200351903A1

    公开(公告)日：2020-11-05

    申请号：US16863901

    申请日：2020-04-30

    Applicant: QUALCOMM Incorporated

    Inventor： Gabi Sarkis ,  Seyedkianoush Hosseini ,  Peter Gaal ,  Aamod Khandekar

    IPC: H04W72/10 ,  H04W72/04 ,  H04W72/12

    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a first downlink control information (DCI) at a first time, and may receive a second DCI at a second, later time. Each DCI may contain scheduling information for scheduling a number of transmissions at the UE. A transmission associated with the first DCI on a first cell may be scheduled to start before or during a transmission associated with the second DCI on a second cell. The UE may then determine priorities associated with the first and second cells. In cases where the priority of the second cell is greater than the priority of the first cell, the UE may transmit the second scheduled transmission before it transmits the first scheduled transmission. As a result, the UE may prioritize transmitting the second scheduled transmission before the first scheduled transmission.

    Distributed feedback architecture for polar decoding
    85.
    发明授权
    Distributed feedback architecture for polar decoding 有权

    公开(公告)号：US10756846B2

    公开(公告)日：2020-08-25

    申请号：US15920276

    申请日：2018-03-13

    Applicant: QUALCOMM Incorporated

    Inventor： Jamie Menjay Lin ,  Yang Yang ,  Gabi Sarkis

    IPC: H04L1/00 ,  H03M13/37 ,  H03M13/13 ,  H03M13/00

    Abstract: A wireless device may decode a polar coded codeword using a successive cancellation list (SCL) decoder. The decoder may implement a distributed feedback architecture, where the decoder stores one or more state maps and a set of bit arrays in memory for each layer of decoding. For different phases of decoding in a layer, the decoder may update the state maps and sets of bit arrays to limit the resources used. Additionally, when performing bit updating following the decoding of a bit of the codeword, the decoder may not update each layer of the decoding process. Instead, each sub-decoder may send a state map up to the calling layer for bit updating when the sub-decoder has completed its invocation, and may not return any intermediate state maps prior to completing invocation. Thus, each decoder and sub-decoder may perform bit updating just twice, reducing the complexity and latency of decoding.

    CONTROL CHANNEL MOTHER CODE DETERMINATION FOR MULTI-TRANSMISSION CONFIGURATION INDICATION COMMUNICATION
    87.
    发明申请
    CONTROL CHANNEL MOTHER CODE DETERMINATION FOR MULTI-TRANSMISSION CONFIGURATION INDICATION COMMUNICATION 审中-公开

    公开(公告)号：US20190356420A1

    公开(公告)日：2019-11-21

    申请号：US16415641

    申请日：2019-05-17

    Applicant: QUALCOMM Incorporated

    Inventor： Makesh Pravin John Wilson ,  Gabi Sarkis ,  Tao Luo ,  Kiran Venugopal ,  Tianyang Bai ,  Xiaoxia Zhang ,  Juan Montojo

    IPC: H04L1/00 ,  H03M13/29

    Abstract: Methods, systems, and devices for wireless communications are described. An encoder may utilize a common mother code for encoding control information to each set of control channel resources of a control channel, control channel associated with multiple transmission configuration indication (TCI) states. For example, the common mother code may include utilizing same parameters when constructing the polar code for each set of control channel resources, where the parameters include a block length, a number of information bits, or both. Additionally, rate matching procedures for each control channel resource may differ (e.g., puncturing, shortening, or repetition). Additionally or alternatively, the mother code and rate matching may be determined based on a sum of all available coded bits in each control channel resource and the number of information bits. A decoder may then attempt soft combination of candidates from the different sets of control channel resources to obtain decoded control information.

    Sequence-based polar code description
    89.
    发明授权
    Sequence-based polar code description 有权

    公开(公告)号：US10432357B2

    公开(公告)日：2019-10-01

    申请号：US15818393

    申请日：2017-11-20

    Applicant: QUALCOMM Incorporated

    Inventor： Yang Yang ,  Jing Jiang ,  Gabi Sarkis

    IPC: H03M13/00 ,  H04L1/00 ,  H03M13/13 ,  H03M13/39 ,  H04W72/04

    Abstract: Methods, systems, and devices that support an efficient sequence-based polar code description are described. In some cases, a wireless device (e.g., a user equipment (UE) or a base station) may transmit a codeword including a set of information bits encoded using a polar code or receive a codeword including a set of information bits encoded using a polar code. As described herein, the wireless device may determine the bit locations of the information bits in the polar code based on a partition assignment vector. Specifically, the wireless device may partition bit-channels for one or more stages of polarization and assign information bits to partitions based on the partition assignment vector. Once the bit locations of the information bits are determined, the wireless device may decode a received codeword or transmit an encoded codeword based on the determined bit locations of the information bits.

    Communication techniques involving pairwise orthogonality of adjacent rows in LPDC code
    90.
    发明授权
    Communication techniques involving pairwise orthogonality of adjacent rows in LPDC code 有权

    公开(公告)号：US10312939B2

    公开(公告)日：2019-06-04

    申请号：US16003047

    申请日：2018-06-07

    Applicant: QUALCOMM Incorporated

    Inventor： Thomas Richardson ,  Joseph Binamira Soriaga ,  Shrinivas Kudekar ,  Gabi Sarkis

    IPC: H03M13/00 ,  H03M13/11 ,  H04L1/00 ,  H04L5/00

    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.

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