公开(公告)号：US11296823B2

公开(公告)日：2022-04-05

申请号：US15963474

申请日：2018-04-26

Applicant: QUALCOMM Incorporated

Inventor： Hobin Kim ,  Hari Sankar ,  Alexei Yurievitch Gorokhov ,  Michael Lee McCloud ,  Joseph Binamira Soriaga

IPC: H04L1/00 ,  H03M13/11 ,  H04W28/04

Abstract: A new radio (NR) bit prioritization procedure that may be executed by a UE and a base station is disclosed, resulting in transmission and reception of modulation symbols having prioritized bits. For example, a transmitter may encode a code block using low-density parity-check code to generate a stream of encoded bits. The transmitter may arrange the encoded bits in one or more modulation symbols according to a relative priority of the encoded bits. The highest priority bits may be located in the most significant bits of the modulation symbol, and therefore be less likely to experience errors. A receiver may receive the modulation symbols and reorder the encoded bits according to the coding scheme based on the relative priority prior to decoding the encoded bits. The prioritization of the bits within the modulation symbols may provide improved block error rates over sequential mapping of encoded bits to symbols.

公开(公告)号：US20220078710A1

公开(公告)日：2022-03-10

申请号：US17400547

申请日：2021-08-12

Applicant: QUALCOMM Incorporated

Inventor： Huilin Xu ,  Peter Gaal ,  Peter Pui Lok Ang ,  Alexei Yurievitch Gorokhov ,  Le Liu ,  Wooseok Nam ,  Heechoon Lee ,  Hari Sankar ,  Changhwan Park ,  Yuchul Kim

IPC: H04W52/02 ,  H04W68/00 ,  H04L5/00 ,  H04W72/14

Abstract: Aspects of the present disclosure relate to wireless communications, and more particularly, to reference signal (RS) designs that allow for tracking loop updates and paging of UEs using various RSs. One example method includes identifying reference signal (RS) monitoring occasions for a user equipment (UE) in an idle or inactive mode; and transmitting, to the UE, reference signals in the identified RS monitoring occasions, the RS monitoring occasions being associated with RS for tracking purposes and RS for an indication the UE is to wake up to process additional signaling.

公开(公告)号：US11246107B2

公开(公告)日：2022-02-08

申请号：US16671007

申请日：2019-10-31

Applicant: QUALCOMM Incorporated

Inventor： Valentin Alexandru Gheorghiu ,  Hari Sankar ,  Gaurav Nigam ,  Peter Gaal

IPC: H04W56/00 ,  H04W24/10 ,  H04L12/26 ,  H04B7/06 ,  H04W72/04 ,  H04W72/08 ,  H04L1/00 ,  H04L5/00 ,  H04W76/27 ,  H04B17/336

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a set of carriers configured for communications between the UE and one or more transmission reception points (e.g., a set of transmission points). The UE may receive multiple communications over different carriers and determine a time difference or delay between two of the carriers (e.g., a first carrier and a second carrier). Based on the time difference and a time difference threshold, the UE may perform a throughput degradation procedure such as transmitting a report indicating the time difference, transmitting a feedback report with channel quality information determined based on the time difference, etc.

公开(公告)号：US11196512B2

公开(公告)日：2021-12-07

申请号：US16454979

申请日：2019-06-27

Applicant: QUALCOMM Incorporated

Inventor： Gabi Sarkis ,  Joseph Binamira Soriaga ,  Peter Gaal ,  Hari Sankar ,  Alexei Yurievitch Gorokhov

IPC: H04L5/00 ,  H04L1/00 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may determine to decode or refrain from decoding a transport block (TB) transmitted from a base station based on a decodability condition. The decodability condition may include whether an effective UE throughput for decoding the TB is greater than a predetermined decoding throughput threshold or not. If the effective UE throughput is greater than the predetermined decoding throughput threshold, the UE may refrain from decoding the TB. In some cases, the TB may be a subsequent transmission from the base station based on an initial transmission not being correctly decoded, and the UE may refrain from decoding the subsequent transmission.

公开(公告)号：US11018804B2

公开(公告)日：2021-05-25

申请号：US16467463

申请日：2017-12-07

Applicant: Qualcomm Incorporated

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

IPC: H04L27/00 ,  H04L1/00

Abstract: Methods, systems, and devices for encoding and decoding are described. To encode a vector, an encoder allocates information bits of the vector to channel instances of a channel that are separated into groups. The groups may vary in size and allocation of the information bits is based on a base sequence of a given length. During decoding, a decoder assigns different bit types to channels instances by dividing a codeword into a plurality of groups and assigning bit types to channel instances of the plurality of groups using the base sequence.

公开(公告)号：US20210152191A1

公开(公告)日：2021-05-20

申请号：US16605911

申请日：2017-05-15

Applicant: Qualcomm Incorporated

Inventor： Gabi Sarkis ,  Hari Sankar ,  Gaojin Wu ,  Changlong Xu ,  Jing Jiang ,  Huang Lou

IPC: H03M13/37 ,  H03M13/13

Abstract: Techniques are described herein to terminate a list decoding operation before its completion based on performing one or more error check processes. A transmitted codeword encoded using a polar code may include one or more error check vectors interspersed with one or more information vectors. Upon receiving the codeword, a decoder may perform a list decoding operation on the received codeword. Upon decoding one of the error check vectors, the decoder may determine whether at least one candidate path used in the successive cancellation list decoding operation passes an error check process based on the error check vector. If no candidate paths satisfy the error check process, the decoder may terminate the list decoding operation. In some examples, the decoder may recheck whether candidate paths satisfy the error check operation at intermediate positions between error check vectors. Such rechecking may occur while decoding information vectors.

公开(公告)号：US10985964B2

公开(公告)日：2021-04-20

申请号：US16126832

申请日：2018-09-10

Applicant: QUALCOMM Incorporated

Inventor： Chinmay Shankar Vaze ,  Hung Dinh Ly ,  Alexei Yurievitch Gorokhov ,  Nathan Yee ,  Hari Sankar ,  Raghu Narayan Challa

IPC: H04L27/26 ,  H04L5/00 ,  H04J11/00 ,  H04W72/04

Abstract: Techniques are described herein that allow a user equipment (UE) to configure a subcarrier spacing value while monitoring synchronization signals of neighboring cells. In some wireless communication systems, synchronization signals in given radio frequency spectrum band may be transmitted using one of a plurality of different subcarrier spacings. In some cases, a network entity, such as a base station, may transmit an indication to the UE that indicates the subcarrier spacing used by a cell to transmit a specific set of synchronization signals. In some cases, the UE may select a subcarrier spacing based on a database of subcarrier spacings stored locally by the UE. In some cases, the UE may select the subcarrier spacing based on a predetermined configuration.

公开(公告)号：US10959233B2

公开(公告)日：2021-03-23

申请号：US15808637

申请日：2017-11-09

Applicant: QUALCOMM Incorporated

Inventor： Hari Sankar ,  Alexei Yurievitch Gorokhov ,  Paolo Minero ,  Hobin Kim ,  Raghu Challa ,  Jing Jiang ,  Joseph Binamira Soriaga

IPC: H04W72/04 ,  H04L1/00 ,  H04W24/02 ,  H04W24/08 ,  H04W72/08

Abstract: Systems, methods and apparatus select a code book based on channel conditions and performance of a demodulator or demapper in a wireless receiver. The method may include determining that the receiver in a first wireless communication apparatus is configured for iteratively processing signals received from a channel, selecting a code book for use in communicating over the channel based on conditions affecting transmission of the signals through the channel and performance information associated with a demapper in the receiver, and identifying the selected code book in one or more control channels transmitted to a second wireless communication apparatus.

公开(公告)号：US10728080B2

公开(公告)日：2020-07-28

申请号：US15428879

申请日：2017-02-09

Applicant: QUALCOMM Incorporated

Inventor： Hari Sankar ,  Jing Jiang ,  Alexei Yurievitch Gorokhov ,  Joseph Binamira Soriaga ,  Brian Banister

IPC: H04L27/36 ,  H04L1/00 ,  H03M13/25 ,  H03M13/13 ,  H03M13/35 ,  H04L27/20

Abstract: Methods, systems, and devices for wireless communication are described. A transmitter, such as a user equipment and/or a base station, may perform polar coding to encode bits. The polar coding may be associated with a plurality of component channels associated with a polar code length. The transmitter may interleave the encoded bits. The transmitter may map the interleaved encoded bits to a modulation symbol. The interleaving and mapping of each encoded bit may be based on an asymmetry of a polar code construction. The transmitter may transmit the interleaved encoded bits based on the mapping.

公开(公告)号：US20200221469A1

公开(公告)日：2020-07-09

申请号：US16736640

申请日：2020-01-07

Applicant: QUALCOMM Incorporated

Inventor： Heechoon Lee ,  Peter Gaal ,  Wanshi Chen ,  Hari Sankar

IPC: H04W72/10 ,  H04W72/04 ,  H04W76/16 ,  H04L5/14 ,  H04L5/16

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a first slot format configuration for a first cell associated with a first radio access technology (RAT) and a first radio frequency spectrum band that conflicts with a second slot format configuration for a second cell associated with a second RAT and a second radio frequency spectrum band during at least a portion of a transmission time interval (TTI). The UE may determine that the first cell has a priority over the second cell, based on the configured slot formats or based on the radio frequency bands, and may drop a communication on the second cell based on the identified priority. The UE may then communicate during at least a portion of the TTI on the first cell while the UE drops a communication on the second cell.