公开(公告)号：US11202271B2

公开(公告)日：2021-12-14

申请号：US16872000

申请日：2020-05-11

Applicant: QUALCOMM Incorporated

Inventor： Siddhartha Mallik ,  Jing Sun ,  Xiaoxia Zhang ,  Taesang Yoo ,  Yongbin Wei ,  Onkar Jayant Dabeer

IPC: H04W16/14 ,  H04W56/00 ,  H04W74/08

Abstract: Techniques for synchronization across transmitting nodes of a same public land mobile network (PLMN) operator using a shared radio frequency spectrum band may include initiating, at a first wireless node, a listen-before-talk (LBT) procedure for access to the shared radio frequency spectrum band, and identifying that a second wireless node associated with a same PLMN operator as the first wireless node has won contention for the shared radio frequency spectrum band. The first wireless node may discontinue the LBT procedure and initiate an auxiliary transmission using the shared radio frequency spectrum band concurrently with a primary transmission of the second wireless node.

公开(公告)号：US20210352719A1

公开(公告)日：2021-11-11

申请号：US17380702

申请日：2021-07-20

Applicant: QUALCOMM Incorporated

Inventor： Yisheng Xue ,  Xiaoxia Zhang ,  Siddhartha Mallik ,  Aleksandar Damnjanovic

IPC: H04W74/08 ,  H04B7/06 ,  H04B7/0413 ,  H04W16/14 ,  H04W72/04 ,  H04L5/00

Abstract: Improvements to asynchronous spatial listen before talk (LBT) procedures are disclosed. In a shared spectrum network spatial LBT procedures are used for directionally targeting the channel reservation process. Prior to transmitting channel reservation signaling, the transmitter and receiver determine an effective interference considering available multiple input, multiple output (MIMO) configuration information. When the effective interference exceeds a predefined threshold, the node may without transmission of its channel reservation signal. Otherwise, when the effective interference remains within the threshold, each node's transmitted channel reservation signal may also identify at least a beamforming matrix either as payload or used to precode the node's channel reservation signal.

公开(公告)号：US11153898B2

公开(公告)日：2021-10-19

申请号：US16201685

申请日：2018-11-27

Applicant: QUALCOMM Incorporated

Inventor： Arumugam Chendamarai Kannan ,  Taesang Yoo ,  Siddhartha Mallik ,  Jelena Damnjanovic ,  Yongbin Wei ,  Durga Prasad Malladi

IPC: H04W72/12 ,  H04L5/14 ,  H04L12/807 ,  H04W28/20 ,  H04W72/04 ,  H04W88/02

Abstract: Methods and apparatuses for managing uplink scheduling for one or more user equipment served by a network entity in a wireless communications system are presented. For instance, an example method is presented that includes generating, by the network entity, an uplink bandwidth allocation map, the uplink bandwidth allocation map defining an uplink bandwidth allocation for at least one of the one or more user equipment for at least one of a plurality of uplink transmission window lengths. In addition, the example method includes transmitting the uplink bandwidth allocation map to at least one of the one or more user equipment.

公开(公告)号：US11095396B2

公开(公告)日：2021-08-17

申请号：US16111036

申请日：2018-08-23

Applicant: QUALCOMM Incorporated

Inventor： Jamie Menjay Lin ,  Siddhartha Mallik

IPC: H04L1/00 ,  H04W84/04

Abstract: Methods, systems, and devices for wireless communications are described. A wireless device, such as a user equipment (UE) may monitor for a decoding candidate of a codeword, wherein the codeword corresponds to a set of received bit metrics, and the decoding candidate corresponds to a plurality of information bits encoded using a polar code, determine a composite detection metric for the codeword for the decoding candidate, where the composite detection metric is derived from a subset of bit metrics for an intermediate polarization layer of the polar code, and determine a classification for performing a list decoding process on the codeword according to the decoding candidate based at least in part on the composite detection metric.

公开(公告)号：US11026097B2

公开(公告)日：2021-06-01

申请号：US16529691

申请日：2019-08-01

Applicant: QUALCOMM Incorporated

Inventor： Yisheng Xue ,  Aleksandar Damnjanovic ,  Yongbin Wei ,  Siddhartha Mallik ,  Tamer Kadous

IPC: H04W4/00 ,  H04W16/14 ,  H04W74/04 ,  H04W72/12

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a device may select a plurality of channel access intervals during which the device is associated with a priority condition relative to another device for communications by the device, wherein each of the plurality of channel access intervals includes a respective contention interval and a respective transmission opportunity; and may transmit, during a contention interval of a first channel access interval of the plurality of channel access intervals, a signal that includes: channel occupancy information for the device for a first transmission opportunity of the first channel access interval, and information that identifies at least a portion of one or more subsequent channel access intervals, of the plurality of channel access intervals, associated with the device. Numerous other aspects are provided.

公开(公告)号：US10939440B2

公开(公告)日：2021-03-02

申请号：US16696766

申请日：2019-11-26

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Juan Montojo ,  Taesang Yoo ,  Siddhartha Mallik ,  Aleksandar Damnjanovic ,  Michael Mingxi Fan

IPC: H04W72/04 ,  H04W74/08 ,  H04L5/00 ,  H04W28/26 ,  H04W72/10 ,  H04W16/14 ,  H04L29/06

Abstract: Techniques are described for wireless communication at a wireless device. One method includes identifying a priority of the wireless device for a transmission interval of a radio frequency spectrum band shared by a plurality of network operating entities; identifying an absence of a predetermined transmission type in each of a number of clear channel assessment (CCA) slots of the transmission interval, in which each of the number of CCA slots is associated with a higher priority than the identified priority of the wireless device; and communicating over the radio frequency spectrum band based at least in part on the identified absence of the predetermined transmission type in each of the number of CCA slots associated with the higher priority than the priority of the wireless device.

公开(公告)号：US10856300B2

公开(公告)日：2020-12-01

申请号：US16121162

申请日：2018-09-04

Applicant: QUALCOMM Incorporated

Inventor： Yisheng Xue ,  Weiliang Zeng ,  Siddhartha Mallik ,  Aleksandar Damnjanovic ,  Tamer Kadous

IPC: H04W72/06 ,  H04W72/04 ,  H04W72/08 ,  H04W72/12 ,  H04L5/00 ,  H04L1/00 ,  H04B7/0417 ,  H04W74/08

Abstract: A per-transmit time interval (TTI) rank control within a transmission opportunity (TxOP) is described for downlink coordinated multiple point (CoMP) operations. In operation, a base station may determine rank and data rate for communication during a transmission opportunity (TxOP) at the beginning of the TxOP. Each TxOP may include a plurality of transmission time intervals (TTIs). For each TTI of the TxOP, the base station computes one or more channel quality indicator (CQI) back-offs using one or more outer loop adaptation processes per TTI, and updates rank and the data rate using the CQI back-offs. Once updated, the base station transmits the downlink data during each TTI according to the updated rank and the data rate.

公开(公告)号：US10772092B2

公开(公告)日：2020-09-08

申请号：US14532714

申请日：2014-11-04

Applicant: QUALCOMM Incorporated

Inventor： Taesang Yoo ,  Siddhartha Mallik ,  Arumugam Chendamarai Kannan ,  Jelena Damnjanovic ,  Madhavan Srinivasan Vajapeyam ,  Jun Wang ,  Yongbin Wei ,  Durga Prasad Malladi

IPC: H04L5/00 ,  H04W72/04 ,  H04L1/18 ,  H04L5/14 ,  H04L27/26 ,  H04L12/26 ,  H04W16/32 ,  H04W74/08 ,  H04J11/00

Abstract: Methods, systems, and devices are described for hierarchical communications and low latency support within a wireless communications system. An eNB and/or a UE may be configured to operate within the wireless communications system which is at least partially defined through a first layer with first layer transmissions having a first subframe type and a second layer with second layer transmissions having a second subframe type. The first subframe type may have a first round trip time (RTT) between transmission and acknowledgment of receipt of the transmission, and the second layer may have a second RTT that is less than the first RTT. Subframes of the first subframe type may be multiplexed with subframes of the second subframe type, such as through time division multiplexing. In some examples symbols of different duration may be multiplexed such that they different symbol durations coexist.

公开(公告)号：US10771273B2

公开(公告)日：2020-09-08

申请号：US15439864

申请日：2017-02-22

Applicant: QUALCOMM Incorporated

Inventor： Tao Luo ,  Yongbin Wei ,  Peter Gaal ,  Hao Xu ,  Taesang Yoo ,  Siddhartha Mallik ,  Makesh Pravin John Wilson ,  Naga Bhushan ,  Durga Prasad Malladi ,  Tingfang Ji ,  Gavin Bernard Horn ,  Alexei Y. Gorokhov ,  Avneesh Agrawal

IPC: H04L12/18 ,  H04W16/14 ,  H04B7/06 ,  H04W72/08 ,  H04L5/00 ,  H04L1/00 ,  H04B17/336 ,  H04B7/0452 ,  H04B7/0413

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus may be a UE that acquires information regarding an interfering non-serving cell and uses the information to improve decoding of serving cell signals. The method includes receiving, from a serving evolved Node B (eNB), information that includes one or more transmission characteristics of at least one non-serving cell and performing at least one of interference cancellation, demodulation, or provides an improved channel quality indicator (CQI) based on the received information.

公开(公告)号：US10742353B2

公开(公告)日：2020-08-11

申请号：US16376895

申请日：2019-04-05

Applicant: QUALCOMM Incorporated

Inventor： Jamie Menjay Lin ,  Siddhartha Mallik ,  Tamer Kadous

IPC: H04L1/18 ,  H04L1/00 ,  H04L5/00 ,  H04L5/02 ,  H04L27/26

Abstract: Methods, systems, and devices for wireless communications are described. In accordance with the described techniques, communicating devices (e.g., an encoder and decoder) may apply an orthogonal cover code to a polar codeword to reduce cross-correlation between different codewords. For example, such techniques may reduce power consumption at a decoding device by providing for earlier decoding termination (e.g., as a result of the reduced cross-correlation). Techniques for generating the cover codes (e.g., on a per-aggregation level basis) and applying the cover codes (e.g., within a search space) are described. Additionally or alternatively, the described techniques may relate to seeding of reference signals used to support decoding of the codewords. Improved orthogonality between reference signal seeds may further suppress codeword recipient ambiguity.