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公开(公告)号：US10772125B2
公开(公告)日：2020-09-08
申请号：US16112444
申请日：2018-08-24
Applicant: QUALCOMM Incorporated
Inventor： Yisheng Xue , Qingsi Wang , Siddhartha Mallik , Weiliang Zeng , Ahmed Sadek
IPC: H04W74/08 , H04B7/0456 , H04W74/00 , H04B7/06 , H04W72/04
Abstract: A method, apparatus, and computer-readable medium at a transmitting network device or a target network device in a listen-before-talk (LBT) session that employ a spatial LBT procedure is disclosed. The spatial LBT procedure takes into account multiple-input multiple-output (MIMO) configuration information in measuring an effective interference. Accordingly, the spatial LBT procedure enables the transmitting network device or the target network device to more accurately measure an interference and make a more accurate decision on whether a channel is clear, and thus improves the system-wide performance. Also, the spatial LBT procedure allows the transmitting network device or the target/receiving network device to adaptively adjust the LBT power detection threshold when the MIMO configuration is not available. This also enables the network devices to more accurately measure interference and make a more accurate decision on whether the channel is clear, especially when advanced MIMO technologies are deployed in 5G or beyond.
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公开(公告)号：US20220352955A1
公开(公告)日：2022-11-03
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
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.
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公开(公告)号：US11387880B2
公开(公告)日：2022-07-12
申请号：US16804828
申请日：2020-02-28
Applicant: QUALCOMM Incorporated
Inventor： Weiliang Zeng , Taesang Yoo , Sanaz Barghi , Naga Bhushan , Pavan Kumar Vitthaladevuni , Krishna Kiran Mukkavilli , Xiaoxia Zhang , Tingfang Ji , Yongbin Wei
IPC: H04B7/06 , H04B7/0417 , H04B7/0456 , H04L1/00 , H04L5/00
Abstract: Systems and methods facilitating feedback of robust channel state information (CSI), such as to provide full CSI feedback or otherwise providing CSI feedback, are described. CSI encoders and/or decoders used by network nodes may implement channel compression/reconstruction based upon neural-network (NN) training of collected channels. A structured payload having an interpretable payload portion and an uninterpretable payload portion may utilized with respect to CSI feedback. The channel compression provided according to some aspects of the disclosure supports feedback of robust CSI, in some instances including full CSI, as determined by a particular network node. Other aspects and features are also claimed and described.
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公开(公告)号：US11317438B2
公开(公告)日：2022-04-26
申请号：US16894584
申请日：2020-06-05
Applicant: QUALCOMM Incorporated
Inventor： Yisheng Xue , Aleksandar Damnjanovic , Xiaoxia Zhang , Jing Sun , Yongbin Wei , Weiliang Zeng
Abstract: Two-phase floating-instant coordinated multipoint (CoMP) operation is disclosed. The CoMP operation may be initiated by the network via a CoMP cluster of network nodes or by user equipments (UEs) configured for uplink CoMP transmissions. The first phase is initiated after a first node to conduct a successful full listen before talk (LBT) procedure signals the other participating nodes to perform an abbreviated LBT procedure and identifies the beginning of the second phase. After success of the full and abbreviated LBT procedures, each associated node will initiate a first transmission in the first phase. The leading node determines how many of the other nodes are available for transmission and decides, based on that amount and the rules of the network, whether to continue with the CoMP operations. If enough of the other nodes are available, the participating nodes will conduct the CoMP transmissions at the identified beginning of the second phase.
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公开(公告)号：US11153179B2
公开(公告)日：2021-10-19
申请号：US16565364
申请日：2019-09-09
Applicant: QUALCOMM incorporated
Inventor： Weiliang Zeng , Sanaz Barghi , Siddhartha Mallik , Taesang Yoo , Yisheng Xue , Xiaoxia Zhang
IPC: H04L12/24 , G06N3/04 , H04L1/00 , H04L5/00 , H04L25/02 , H04L27/26 , H04L12/26 , H04W72/08 , H04L1/20
Abstract: Methods, systems, and devices for wireless communications are described, and relate to a base station to communicating with a user equipment (UE) over a channel. A first device (for example, the base station or the UE) may use a trained neural network to estimate one or more link performance metrics associated with the channel. Predicting the link level performance may include determining one or more neural network weights associated with one or more input parameters associated with the channel to estimate the one or more link performance metrics. The first device may report feedback to the second device based on the estimated link performance metrics. Based on the feedback, the second device may adapt the link by adjusting channel parameters to improve the reliability or efficacy of later transmissions.
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Patent Agency Ranking
公开(公告)号：US11483042B2
公开(公告)日：2022-10-25
申请号：US16888593
申请日：2020-05-29
Applicant: QUALCOMM Incorporated
Inventor： Yisheng Xue , Weiliang Zeng , Xiaoxia Zhang , Yongbin Wei
Abstract: Certain aspects of the present disclosure provide techniques for qualifying machine learning model-based channel state information (CSI) predictions. An example method generally includes receiving, from a network entity, a channel state information (CSI) prediction model for quantized CSI, calculating CSI based on downlink reference signal measurements, generating a quantized CSI difference value based a quantization of a difference between the calculated CSI and CSI predicted based on a CSI prediction model, and reporting, to the network entity, the calculated CSI and the quantized CSI difference value.
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公开(公告)号：US11228415B2
公开(公告)日：2022-01-18
申请号：US16478822
申请日：2017-02-16
Applicant: QUALCOMM Incorporated
Inventor： Taesang Yoo , Weiliang Zeng , June Namgoong , Xiaoxia Zhang , Alexandros Manolakos , Yu Zhang , Siddhartha Mallik , Joseph Binamira Soriaga
Abstract: A method for wireless communications, comprising: signaling, to a user equipment (UE), an indication of one of at least two rules regarding how quasi co-location (QCL) configured for the UE should be applied for one or more DMRS ports; and sending downlink transmission to the UE with the one or more DMRS ports; receiving signaling from a base station and processing signals received on one or more DMRS ports based on the indicated rule. Said method improves communications between access points and stations in a wireless network.
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公开(公告)号：US20210273706A1
公开(公告)日：2021-09-02
申请号：US16804828
申请日：2020-02-28
Applicant: QUALCOMM Incorporated
Inventor： Weiliang Zeng , Taesang Yoo , Sanaz Barghi , Naga Bhushan , Pavan Kumar Vitthaladevuni , Krishna Kiran Mukkavilli , Xiaoxia Zhang , Tingfang Ji , Yongbin Wei
IPC: H04B7/06 , H04B7/0417 , H04L5/00 , H04L1/00 , H04B7/0456
Abstract: Systems and methods facilitating feedback of robust channel state information (CSI), such as to provide full CSI feedback or otherwise providing CSI feedback, are described. CSI encoders and/or decoders used by network nodes may implement channel compression/reconstruction based upon neural-network (NN) training of collected channels. A structured payload having an interpretable payload portion and an uninterpretable payload portion may utilized with respect to CSI feedback. The channel compression provided according to some aspects of the disclosure supports feedback of robust CSI, in some instances including full CSI, as determined by a particular network node. Other aspects and features are also claimed and described.
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公开(公告)号：US20210075691A1
公开(公告)日：2021-03-11
申请号：US16565364
申请日：2019-09-09
Applicant: QUALCOMM Incorporated
Inventor： Weiliang Zeng , Sanaz Barghi , Siddhartha Mallik , Taesang Yoo , Yisheng Xue , Xiaoxia Zhang
Abstract: Methods, systems, and devices for wireless communications are described, and relate to a base station to communicating with a user equipment (UE) over a channel. A first device (for example, the base station or the UE) may use a trained neural network to estimate one or more link performance metrics associated with the channel. Predicting the link level performance may include determining one or more neural network weights associated with one or more input parameters associated with the channel to estimate the one or more link performance metrics. The first device may report feedback to the second device based on the estimated link performance metrics. Based on the feedback, the second device may adapt the link by adjusting channel parameters to improve the reliability or efficacy of later transmissions.
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公开(公告)号：US10892864B2
公开(公告)日：2021-01-12
申请号：US15460079
申请日：2017-03-15
Applicant: QUALCOMM Incorporated
Inventor： Taesang Yoo , Zhifei Fan , Weiliang Zeng , Jing Sun , Juan Montojo
IPC: H04L5/00 , H04L27/26 , H04L5/02 , H04J13/00 , H04B17/336
Abstract: Methods, systems, and devices for wireless communication are described. A base station may multiplex reference signal (RS) transmissions for different antenna ports over a set of resource elements using a code division multiplexing (CDM) group spreading in a time dimension and a frequency dimension. The base station may transmit the RS transmissions over the set of resource elements based at least in part on the multiplexing to a user equipment (UE). The UE may demultiplex the RS transmissions based at least in part on a CDM group and may select at least one of the time dimension or the frequency dimension over which to demultiplex the RS transmissions based on a determination or other information.
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