公开(公告)号：US12160298B2

公开(公告)日：2024-12-03

申请号：US18321614

申请日：2023-05-22

Applicant: Samsung Electronics Co., Ltd.

Inventor： Vishnu Vardhan Ratnam ,  Hao Chen ,  Abhishek Sehgal ,  Hao-Hsuan Chang

IPC: H04B7/06 ,  H04L5/00 ,  H04L25/02 ,  H04W72/0446

Abstract: A method includes receiving CSI frames among P CSI frames transmitted from another electronic device. The method includes estimating a CSI from each of the received CSI frames as an available CSI estimate. The method includes identifying an impairment model accounting for inclusion of amplitude or phase errors of an estimated CSI corresponding to a p-th CSI frame among the P CSI frames. The method includes compensating, via the impairment model, for the errors in amplitude and phase of P CSI estimates. Compensating for the errors in amplitude and phase of the P CSI estimates can be based on: approximating a missing CSI estimate based on the available CSI estimates; determining an AGC gain value; or computing the errors in the phase based on a weighted least-squares solution. The method includes estimating a breathing rate of a subject based on different spatial dimensions of the P compensated CSI estimates.

公开(公告)号：US12132547B2

公开(公告)日：2024-10-29

申请号：US17506547

申请日：2021-10-20

Applicant: Samsung Electronics Co., Ltd.

Inventor： Shiyang Leng ,  Ahmed Atef Ibrahim Ibrahim ,  Hao Chen ,  Rebal Al Jurdi ,  Jianzhong Zhang

IPC: H04B7/06 ,  H04B7/0417 ,  H04L5/00 ,  H04W72/23

CPC classification number: H04B7/0626 ,  H04B7/0417 ,  H04L5/0048 ,  H04W72/23

Abstract: A system and method for user selection in distributed multiple-input, multiple-output (MIMO). The system performs a method that includes configuring a first channel state information-reference signal (CSI-RS) resource set for a serving transmission point (TRP) and a second CSI-RS resource for a concatenated channel, wherein the concatenated channel is between a virtual panel and the apparatus, the virtual panel comprising distributed panels from a serving TRP and a helping TRP. The method also includes computing a metric as a function of one or more quantities included in one or more measurement reports, received from a user equipment (UE), for the concatenated channel and at least one of the serving TRP channel or the helping TRP channel. The method also includes configuring, based on the metric, the UE for one of: a legacy transmission or a distributed MIMO transmission.

公开(公告)号：US20240236860A1

公开(公告)日：2024-07-11

申请号：US18493724

申请日：2023-10-24

Applicant: Samsung Electronics Co., Ltd.

Inventor： Khuong N. Nguyen ,  Abhishek Sehgal ,  Hao Chen ,  Guanbo Chen

IPC: H04W52/02

CPC classification number: H04W52/0248

Abstract: Embodiments of the present disclosure provide methods and apparatuses for predicting a quality of experience (QoE) of a user and adjusting target wake time (TWT) operations for the user based on the predicted quality of experience in a wireless local area network communications system. The apparatuses include a communication device comprising a transceiver and a processor operably connected to the transceiver. The transceiver is configured to receive traffic over a wireless network for an application in a TWT operation. The processor is configured to determine network statistics from the traffic, estimate a QoE value for the application based on the network statistics, and determine new TWT parameters for the TWT operation based on the estimated QoE value.

公开(公告)号：US20240223484A1

公开(公告)日：2024-07-04

申请号：US18486906

申请日：2023-10-13

Applicant: Samsung Electronics Co., Ltd.

Inventor： Vishnu Vardhan Ratnam ,  Bilal Sadiq ,  Hao Chen ,  Abhishek Sehgal ,  Boon Loong Ng ,  Jianzhong Zhang

IPC: H04L43/0864 ,  H04L25/02 ,  H04L27/26 ,  H04L43/0829

CPC classification number: H04L43/0864 ,  H04L25/0202 ,  H04L27/2659 ,  H04L27/266 ,  H04L43/0841

Abstract: A method includes obtaining Wi-Fi channel state information (CSI) parameters measured at an anchor and a target device from Wi-Fi frames transmitted between the anchor and the target device, the CSI parameters comprising, for each of the anchor and the target device, frame transmission and reception times, a carrier phase of the CSI, a crystal offset factor, and a packet detection time error. The method also includes determining a round trip time (RTT) estimate or a relative change in the RTT estimate as a function of the CSI parameters. The method further includes estimating a range between the anchor and the target device as a function of the RTT estimate, or estimating a change in the range between the anchor and the target device as a function of the relative change in the RTT estimate.

公开(公告)号：US11923923B2

公开(公告)日：2024-03-05

申请号：US17575559

申请日：2022-01-13

Applicant: Samsung Electronics Co., Ltd.

Inventor： Shiyang Leng ,  Hao Chen ,  Jianhua Mo ,  Namjeong Lee ,  Sooyoung Hur

IPC: H04B7/0426 ,  H04B7/06 ,  H04W16/28

CPC classification number: H04B7/043 ,  H04B7/0695 ,  H04W16/28

Abstract: Methods and apparatuses in a wireless communication system. A base station (BS) includes a transceiver and a processor. The processor is configured to transmit a common beam to at least one user equipment (UE). The processor is also configured to configure the common beam to have a null area in a direction of a satellite earth station, the null area defining a space within a coverage area of the common beam in which a signal from the common beam is suppressed.

公开(公告)号：US11696205B2

公开(公告)日：2023-07-04

申请号：US17031622

申请日：2020-09-24

Applicant: Samsung Electronics Co., Ltd.

Inventor： Nishith D. Tripathi ,  Hao Chen ,  Jianhua Mo

IPC: H04W36/32 ,  H04W36/00 ,  H04W74/08 ,  H04W36/36

CPC classification number: H04W36/32 ,  H04W36/0033 ,  H04W36/0058 ,  H04W36/0083 ,  H04W36/00837 ,  H04W36/36 ,  H04W74/0833

Abstract: A method for managing mobility in a wireless communication system includes determining an initial mobility management configuration for a user equipment (UE) in a serving cell based on cell configuration information. The method also includes identifying a current context of the UE based on reports received from the UE. The method further includes determining an updated mobility management configuration for the UE based on the current context of the UE. Additionally, the method includes transmitting a configuration message to update the UE with the updated mobility management configuration. The method also includes determining whether to trigger a handover of the UE based on comparison of the serving cell and neighbor cell measurements with thresholds. The method further includes triggering the handover based on the updated mobility management configuration.

公开(公告)号：US20230036744A1

公开(公告)日：2023-02-02

申请号：US17813912

申请日：2022-07-20

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hao Chen ,  Lianjun Li ,  Yan Xin

IPC: H04W52/14 ,  H04W52/08 ,  H04W52/24

Abstract: Methods and apparatuses for voice over long-term evolution/voice over new radio (VoLTE/VoNR) performance for a cellular communication system. A method of operating a base station includes receiving, from a user equipment (UE), uplink (UL)signals; identifying, based on the UL signals, a first and second parameters; determining first and second UL power control parameters based on the first and second parameters, respectively; determining a first time period for the first UL power control parameter and a second time period for the second UL power control parameter, wherein the first time period is longer than the second time period; updating the first UL power control parameter based on the first time period and the second UL power control parameter based on the second time period; and transmitting, to the UE, the updated first and second UL power control parameters for an UL transmit power of the UE.

公开(公告)号：US20230019046A1

公开(公告)日：2023-01-19

申请号：US17529164

申请日：2021-11-17

Applicant: Samsung Electronics Co., Ltd.

Inventor： Ahmed Atef Ibrahim Ibrahim ,  Hao Chen ,  Namjeong Lee ,  Jianzhong Zhang

IPC: H04W52/14 ,  H04B7/06 ,  H04L5/00 ,  H04W52/12 ,  H04W52/24

Abstract: Methods and apparatuses in a wireless communication system. A base station (BS) includes a transceiver and a processor. The processor is configured to receive, via the transceiver, a channel state information (CSI) report from at least one user equipment (UE). The processor is also configured to configure CSI-reference signal (RS) resources for the at least one UE. The processor is further configured to, based on the CSI report from the at least one UE, perform one of: set a transmission power to full power for transmission in a physical downlink shared channel (PDSCH); or apply a back-off percentage to the transmission power in the PDSCH.

公开(公告)号：US20220376744A1

公开(公告)日：2022-11-24

申请号：US17585404

申请日：2022-01-26

Applicant: Samsung Electronics Co., Ltd.

Inventor： Rebal Al Jurdi ,  Ahmed Atef Ibrahim Ibrahim ,  Hao Chen ,  Shiyang Leng ,  Namjeong Lee ,  Jianzhong Zhang

IPC: H04B7/024 ,  H04B17/309 ,  H04B17/382 ,  H04L1/00

Abstract: A method includes obtaining one or more channel quality and performance indicators of a user equipment (UE) from multiple transmit-receive points (TRPs) in a coordinated multipoint (CoMP) cluster. The method also includes generating a set of performance metrics from the one or more channel quality and performance indicators. The method also includes determining a number of helping layers for multiplexing joint transmission (Mux-JT) in the CoMP cluster based on the set of performance metrics. The method also includes selecting a modulation and coding scheme (MCS) for the Mux-JT based on at least one channel quality indicator (CQI) of the UE.

公开(公告)号：US20210126684A1

公开(公告)日：2021-04-29

申请号：US17076746

申请日：2020-10-21

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hao Chen ,  Ahmed Atef Ibrahim Ibrahim ,  Rebal Jurdi ,  Zinan Lin ,  Jianhua Mo ,  Jianzhong Zhang

IPC: H04B7/0456

Abstract: A method and apparatus of a BS in a wireless communication system is provided. The method and apparatus comprises: storing a set of beam codebooks including a plurality of angular grids each of which is identified as a first type of angular grid or a second type of angular grid; identifying a set of parameters to adjust an antenna beam pattern based on the set of beam codebooks, wherein the set of parameters includes at least one of feedback information received from a UE or a set of KPIs identified by the BS; determining a type of angular grid as the first type of angular grid or the second type of angular grid, wherein the first and second type of angular grids include a first antenna gain and a second antenna gain, respectively; and select, from the set of beam codebooks, a beam codebook corresponding to the antenna beam pattern.