公开(公告)号：US11968686B2

公开(公告)日：2024-04-23

申请号：US17535201

申请日：2021-11-24

Applicant: QUALCOMM Incorporated

Inventor： Weiliang Zeng ,  Sanaz Barghi ,  Pouriya Sadeghi ,  Navin Dunichand Anwani ,  Supratik Bhattacharjee ,  Gautham Hariharan

IPC: H04W72/23 ,  H04W24/02 ,  H04W72/04 ,  H04W72/0446

CPC classification number: H04W72/23 ,  H04W24/02 ,  H04W72/0446

Abstract: A method of wireless communications by a user equipment (UE) includes decoding information received from a base station via a physical downlink shared channel (PDSCH). The UE determines whether to update channel state feedback based on the decoded information. The channel state feedback is updated based on the determination to generate updated channel state feedback. The updated channel state feedback is transmitted to the base station. The UE is configured to update the channel state feedback without an additional measurement of a channel state information reference signal (CSI-RS).

公开(公告)号：US11936452B2

公开(公告)日：2024-03-19

申请号：US16805467

申请日：2020-02-28

Applicant: QUALCOMM Incorporated

Inventor： Taesang Yoo ,  Weiliang Zeng ,  Naga Bhushan ,  Krishna Kiran Mukkavilli ,  Tingfang Ji ,  Yongbin Wei ,  Sanaz Barghi

IPC: H04B7/06 ,  G06N20/00 ,  H04B7/0456

CPC classification number: H04B7/0626 ,  G06N20/00 ,  H04B7/0486 ,  H04B7/0639

Abstract: Various aspects of the present disclosure generally relate to neural network based channel state information (CSI) feedback. In some aspects, a device may obtain a CSI instance for a channel, determine a neural network model including a CSI encoder and a CSI decoder, and train the neural network model based at least in part on encoding the CSI instance into encoded CSI, decoding the encoded CSI into decoded CSI, and computing and minimizing a loss function by comparing the CSI instance and the decoded CSI. The device may obtain one or more encoder weights and one or more decoder weights based at least in part on training the neural network model. Numerous other aspects are provided.

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：US11246116B2

公开(公告)日：2022-02-08

申请号：US15997349

申请日：2018-06-04

Applicant: QUALCOMM Incorporated

Inventor： Weiliang Zeng ,  Taesang Yoo ,  Seyed Ali Akbar Fakoorian ,  Joseph Binamira Soriaga

IPC: H04W72/04 ,  H04L1/00

Abstract: Multiple modulation and coding scheme (MCS) tables for new radio (NR) networks is disclosed. Multiple MCS tables are defined with different sets of MCS values selected for improved performance in various transmission conditions. The multiple MCS tables may be known to base stations and user equipments (UEs) in the network. A serving base station may determine a set of transmission characteristics related to a transmission environment of a UE. The base station selects one of the MCS tables of the multiple MCS tables based on the set of transmission characteristics. The selected MCS table includes MCS values that may provide improved performance for the UE considering one or more of the characteristics of the set of transmission characteristics. The base station will then transmit an indication of the selected MCS table to the served UE.

公开(公告)号：US11239891B2

公开(公告)日：2022-02-01

申请号：US16736750

申请日：2020-01-07

Applicant: QUALCOMM Incorporated

Inventor： Yisheng Xue ,  Xiaoxia Zhang ,  Weiliang Zeng ,  Yongbin Wei

IPC: H04B7/06 ,  H04B7/0456 ,  H04W16/28 ,  H04W8/24 ,  H04B7/024 ,  H01Q3/26

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to a base station, a report indicating that a cooperative reception group including the UE and one or more other UEs connected to the UE over an out-of-band link supports one or more downlink transmit beamforming techniques. The UE may determine, based at least in part on the one or more downlink transmit beamforming techniques supported by the cooperative reception group, a downlink transmit precoder associated with relaxed beamforming nulling. The UE may decode a downlink transmission received from the base station based at least in part on the downlink transmit precoder and one or more decoded bits received from the one or more other UEs in the cooperative reception group. Numerous other aspects are provided.

公开(公告)号：US20190110208A1

公开(公告)日：2019-04-11

申请号：US16154537

申请日：2018-10-08

Applicant: QUALCOMM Incorporated

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

IPC: H04W16/10 ,  H04W48/20 ,  H04W48/16 ,  H04W48/12 ,  H04W72/12 ,  H04W48/02 ,  H04B17/309

Abstract: Methods, systems, and devices for wireless communications are described. An access point of a secondary cluster may identify a first set of access points of a primary cluster scheduled to perform downlink transmissions over a shared radio frequency spectrum band during a transmission opportunity. The access point may identify a second set of access points and may select a first set of blacklisted stations associated with the secondary cluster for the transmission opportunity. In some cases, the selecting is based on the first set of access points and the second set of access points. The access point may then selectively perform at least one downlink transmission to a second set of stations associated with the secondary cluster during the transmission opportunity. In some examples, the second set of stations is based on the first set of blacklisted stations.

公开(公告)号：US11804887B2

公开(公告)日：2023-10-31

申请号：US17306890

申请日：2021-05-03

Applicant: QUALCOMM Incorporated

Inventor： Weiliang Zeng ,  Pouriya Sadeghi ,  Supratik Bhattacharjee ,  Sanaz Barghi ,  Navin Dunichand Anwani ,  Gautham Hariharan

IPC: H04B7/06 ,  H04L1/00 ,  G06N20/00

CPC classification number: H04B7/0641 ,  H04B7/0626 ,  H04L1/0003 ,  G06N20/00

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a set of reference signals from a base station and may determine a first set of channel state parameters. The UE may determine one or more preprocessed decoder parameters based on a downlink channel decoder of the UE and may perform one or more signal processing operations to determine one or more adjustment values for the first set of channel state parameters. The UE may transmit an indication of a the one or more adjustment values to the base station. In some implementations, the UE may transmit an indication of the one or more preprocessed decoder parameters to the base station and the base station may perform the one or more signal processing operations to determine the one or more adjustment values.

公开(公告)号：US11388728B2

公开(公告)日：2022-07-12

申请号：US16190927

申请日：2018-11-14

Applicant: QUALCOMM incorporated

Inventor： Yisheng Xue ,  Xiaoxia Zhang ,  Aleksandar Damnjanovic ,  Weiliang Zeng ,  Tamer Kadous ,  Yongbin Wei

IPC: H04W72/08 ,  H04L5/00 ,  H04W74/08 ,  H04W16/14

Abstract: Methods, systems, and devices for wireless communications are described. A transmitter may identify a contention window for a no-energy-detection protocol for determining a channel availability for a data transmission. After the contention window expires, the transmitter may send a request message to a receiver. The receiver may measure a quality of the request message against a request threshold and transmit a response message if the measured quality exceeds the request threshold. The transmitter may then measure a quality of the response message against a response threshold. If the measured quality exceeds the response threshold, the transmitter may initiate a data transmission with the receiver. If the quality falls below the response threshold or the response message is not received, the transmitter may adjust the contention window and reattempt the no-energy-detection protocol. The contention window may also be adjusted based on an acknowledgement message received after the data transmission.

公开(公告)号：US11337095B2

公开(公告)日：2022-05-17

申请号：US16734254

申请日：2020-01-03

Applicant: QUALCOMM Incorporated

Inventor： Weiliang Zeng ,  Sanaz Barghi ,  Pouriya Sadeghi ,  Supratik Bhattacharjee ,  Taesang Yoo ,  Xiaoxia Zhang ,  Yisheng Xue

IPC: H04W24/10 ,  H04W72/04 ,  H04B7/06 ,  H04W24/08

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a base station, a request that the UE report a predicted future channel state information measurement. Upon receiving the request, the UE may measure, during a first time period, a channel to obtain measured channel state information. The UE may then determine the predicted future channel state information for a second time period based on the measured channel state information. In some case, the second time period may be subsequent to the first time period. Upon determining the predicted future channel state information measurement, the UE may transmit, to the base station, a channel state information report. In some aspects, the channel state information report may be indicative of the predicted future channel state information measurement.

公开(公告)号：US20210211912A1

公开(公告)日：2021-07-08

申请号：US16734254

申请日：2020-01-03

Applicant: QUALCOMM Incorporated

Inventor： Weiliang Zeng ,  Sanaz Barghi ,  Pouriya Sadeghi ,  Supratik Bhattacharjee ,  Taesang Yoo ,  Xiaoxia Zhang ,  Yisheng Xue

IPC: H04W24/10 ,  H04W24/08 ,  H04B7/06 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a base station, a request that the UE report a predicted future channel state information measurement. Upon receiving the request, the UE may measure, during a first time period, a channel to obtain measured channel state information. The UE may then determine the predicted future channel state information for a second time period based on the measured channel state information. In some case, the second time period may be subsequent to the first time period. Upon determining the predicted future channel state information measurement, the UE may transmit, to the base station, a channel state information report. In some aspects, the channel state information report may be indicative of the predicted future channel state information measurement.