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公开(公告)号：US20240048203A1
公开(公告)日：2024-02-08
申请号：US18348266
申请日：2023-07-06
Applicant: Samsung Electronics Co., Ltd.
Inventor： Tiexing Wang , Umut Demirhan , Yang Li
IPC: H04B7/06
CPC classification number: H04B7/0626 , H04B7/0639 , H04B7/0632 , H04B7/0634
Abstract: Methods and apparatuses for mobility classification and channel state information (CSI) prediction. A method for operating a base station includes receiving, from a user equipment (UE), a channel status state information (CSI) report comprising a precoding matrix indicator (PMI), a channel quality information (CQI), and a rank indicator (RI). The method further includes identifying a CSI configuration of the UE and performing a metric smoothing operation on the PMI. The metric smoothing operation results in a smoothed PMI. The metric smoothing operation comprises a scaling function based on the RI and a discrete Fourier transform (DFT) vector length. The method further includes determining a mobility range classification of the UE based on the smoothed PMI, other metrics in the CSI feedback report, and the CSI configuration.
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公开(公告)号：US20230082795A1
公开(公告)日：2023-03-16
申请号：US17932274
申请日：2022-09-14
Applicant: Samsung Electronics Co., Ltd.
Inventor： Tiexing Wang , Yeqing Hu , Yang Li , Rui Wang , Junmo Sung , Jianzhong Zhang
Abstract: A method includes storing multiple signals received from a user equipment (UE) in a queue. The method also includes estimating a sounding reference signal (SRS) signal-to-noise-ratio (SNR) and determining a filtered SNR based on the received signals. The method also includes computing one or more features based on the filtered SNR and at least some of the received signals in the queue. The method also includes determining (i) a channel condition of the UE and (ii) a speed range of the UE based on the one or more computed features, wherein the channel condition of the UE comprises line-of-sight (LoS) or non-line-of-sight (NLoS). The method also includes determining a transmission configuration based on the channel condition of the UE and the speed range of the UE.
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公开(公告)号：US11516689B2
公开(公告)日：2022-11-29
申请号：US17129797
申请日：2020-12-21
Applicant: Samsung Electronics Co., Ltd.
Inventor： Yeqing Hu , Yang Li , Tiexing Wang , Junmo Sung , Rui Wang , Jianzhong Zhang
Abstract: A method for operating a base station comprises receiving channel information from a plurality of UEs; determining, based on the channel information, one or more UEs on which to base a channel prediction; computing a first set of metrics and a second set of metrics corresponding to the plurality of UEs, wherein computing the first set of metrics has a lower complexity than computing the second set of metrics; performing a selection process on the plurality of UEs based on the first and second set of metrics associated with the plurality of UEs; selecting a first subset of UEs from the plurality of UEs based on a first set of metrics; selecting, from the first subset, a second subset of UEs based on a second set of metrics; and performing the channel prediction based on the second subset of UEs.
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公开(公告)号：US20220271852A1
公开(公告)日：2022-08-25
申请号：US17481048
申请日：2021-09-21
Applicant: Samsung Electronics Co., Ltd.
Inventor： Yeqing Hu , Yang Li , Rui Wang , Junmo Sung , Tiexing Wang , Jianzhong Zhang
IPC: H04B17/391
Abstract: Methods and apparatuses for a BS in a communication system. The method comprises: identifying antenna groups; identifying channel coefficients for each of the antenna groups to perform a channel tracking and prediction operation; receiving, from a user equipment (UE), an uplink signal to perform the channel tracking and prediction operation; and performing, based at least in part on the received uplink signal, a channel coefficient tracking operation for the channel coefficients of the antenna groups, respectively, the channel coefficient tracking operation including a channel subspace parameter tracking operation and a subspace coefficient tracking operation.
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