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Precoding Matrix

Precoding Matrix-related patent applications - as published by the U.S. Patent and Trademark Office (USPTO).


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Data transmission method, apparatus, and device
Huawei Technologies Co., Ltd.
January 11, 2018 - N°20180013472

Embodiments of the present invention provide a data transmission method, apparatus, and device, so as to improve efficiency in utilizing a time-frequency resource. The method includes: determining, by a transmit end device, a signature matrix s according to a quantity l of layers of a data stream and a quantity r of receive antennas used by a receive end device; ...
Method and apparatus for transmitting channel state information
Lg Electronics Inc.
January 04, 2018 - N°20180006701

A method for transmitting channel status information of a user equipment (ue) in a wireless communication system. The ue reports first channel information to a base station periodically; and reports second channel information to the base station periodically. The first channel information and the second channel information are pieces of information combined to indicate one precoding matrix. The second channel ...
Method and apparatus for transmitting uplink signals using multi-antenna
Lg Electronics Inc.
January 04, 2018 - N°20180006692

A method and apparatus for allowing a ue to transmit uplink signals using a mimo scheme are disclosed. In order to maintain good peak power to average power ratio (papr) or cubic metric (cm) properties when the ue transmits uplink signals using the mimo scheme, the ue uses a precoding scheme based on a precoding matrix established in a manner ...
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Cell measurement method and terminal
China Academy Of Telecommunications Technology
December 28, 2017 - N°20170373772

The present disclosure provides a cell measurement method and a terminal. The cell measurement method includes steps of: measuring a pilot signal from a to-be-measured cell, so as to acquire an channel estimation of n pilot signal transmission ports of the to-be-measured cell, n≧1; determining an equivalent received power corresponding to each precoding matrix in accordance with each precoding ...
Method for performing pre-coding using codebook in wireless communication system and apparatus therefor
Sogang University Research Foundation
December 28, 2017 - N°20170373745

A method for performing, by a ue, precoding using a codebook in a wireless communication system includes: receiving a reference signal for channel estimation from an enb; estimating a channel through the received reference signal; determining a precoding matrix related to the estimated channel in a codebook; and feeding back, to the enb, a precoding matrix index (pmi) corresponding to ...
4tx codebook enhancement in lte
Texas Instruments Incorporated
December 28, 2017 - N°20170373733

Channel state information (csi) feedback in a wireless communication system is disclosed. A precoding matrix is generated for multi-antenna transmission based on precoding matrix indicator (pmi) feedback, wherein the pmi indicates a choice of precoding matrix derived from a matrix multiplication of two matrices from a first codebook and a second codebook. In one embodiment, the first codebook comprises at ...
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Method and apparatus for estimating channel in wireless communication system
Lg Electronics Inc.
December 21, 2017 - N°20170366316

The present invention relates to a wireless communication system. A method for estimating a channel by a user equipment (ue) in a wireless communication system includes receiving information about at least one channel station information (csi) configuration for reporting csi of one of a plurality of serving cells, determining that the same precoding matrix is applied to a plurality of ...
Signal transmission method and apparatus using codebook in wireless communication system supporting multiple antennas
Lg Electronics Inc.
December 21, 2017 - N°20170366241

The present invention relates to a method for transmitting, by a base station, a downlink signal using a plurality of transmission antennas comprises the steps of: applying a precoding matrix indicated by the pmi, received from a terminal, in a codebook to a plurality of layers, and transmitting the precoded signal to the terminal through a plurality of transmission antennas. ...
Channel feedback for coordinated multi-point transmission
Texas Instruments Incorporated
December 21, 2017 - N°20170366234

A method of coordinated multipoint (comp) communication between a base station having a plurality of points with at least one user equipment (ue). At least one ue receives at least one transmission from the base station having the plurality of points. This ue measures downlink channel state information for each of the plurality of points including rank indicator (ri), a ...
Method and terminal for handling channel state information
Huawei Technologies Co., Ltd.
December 07, 2017 - N°20170353882

Provided in embodiments of the present application are a method and terminal for handling channel state information (csi). The embodiments use the terminal to measure and report to a base station first csi, where the first csi comprises a first rank indicator (ri), a first precoding matrix indicator (pmi), and a first channel quality indicator (cqi), to acquire a second ...
Pmi reporting for a set of ports
Telefonaktiebolaget Lm Ericsson (publ)
November 23, 2017 - N°20170338879

There is provided mechanisms for precoding matrix indicator (pmi) reporting for a set of ports. A method is performed by a wireless device. The method comprises receiving reference signals, the reference signals having been transmitted from a set of ports of a network node. The method comprises determining pmi information for the received reference signals. The method comprises transmitting the ...
Data transmission method, transmit end device, and receive end device
Huawei Technologies Co., Ltd.
November 23, 2017 - N°20170338869

The present disclosure discloses a data transmission method, a transmit end device, and a receive end device. The method includes performing bit mapping processing on a first part of bits of a first data bit group, to generate a first modulation symbol and determining a first precoding matrix from multiple preset precoding matrices according to a second part of bits ...
Method for transmitting 4-antenna precoding matrix, user equipment and base station
Huawei Technologies Co., Ltd.
November 23, 2017 - N°20170338868

Embodiments disclose a method for transmitting a 4-antenna precoding matrix, a user equipment, and a base station. The method includes determining a rank used for indicating the number of transmission layers, determining a first precoding matrix in a codebook set corresponding to the rank, determining a first pmi and a second pmi used for indicating the first precoding matrix, and ...
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Beamforming signaling in a wireless network
Comcast Cable Communications, Llc
November 16, 2017 - N°20170332289

Methods, apparatus, and systems for wireless communications are described. Example methods, devices, and systems are described that utilize a precoding matrix indicator (pmi) computed based at least in part on first signals received via a first cell and on second signals received via a second cell. Information in a measurement information message may be used as part of computing a ...
Method for feeding backchannel state information, user equipment, and base station
Huawei Technologies Co., Ltd.
November 16, 2017 - N°20170331542

Embodiments of the present invention provide a method for feeding back channel state information, a user equipment, and abase station, to improve feedback precision of channel state information. The method includes: receiving a reference signal sent by a base station; selecting a precoding matrix w from a codebook according to the reference signal, where a column vector of the precoding ...
Enhanced csi feedback for fd-mimo
Qualcomm Incorporated
November 16, 2017 - N°20170331535

Enhanced channel state information (csi) feedback is disclosed for full dimensional multiple input, multiple output (fd-mimo) operations. In one aspect, a single csi process is defined that is configured with an azimuth and elevation csi-reference signal (rs) ports. A user equipment (ue) will send a precoding matrix indictor (pmi) report including a precoding matrix indicator (pmi) for the azimuth ports ...
Codebook construction
Nec Corporation
November 09, 2017 - N°20170324456

A method implemented in a base station used in a wireless communications system is disclosed. The method comprises having 1-layer, 2-layer, 3-layer, and 4-layer codebooks for 4 transmit antenna (4tx) transmission, each codebook including a plurality of precoding matrices, precoding data with one of the plurality of precoding matrices, and transmitting, to a user equipment, the precoded data, wherein each of ...
Method and apparatus for enabling uplink mimo
Samsung Electronics Co., Ltd
October 26, 2017 - N°20170311296

Methods and apparatuses enabling uplink multiple-input multiple-output (mimo) are provided. A user equipment (ue) includes a transceiver and a processor operably connected to the transceiver. The transceiver is configured to receive an uplink (ul) grant for an ul transmission. The processor is configured to decode a precoding information field in downlink control information (dci) associated with the ul grant. The ...
Method for reporting channel state and apparatus therefor
Lg Electronics Inc.
October 26, 2017 - N°20170310378

A method for reporting a channel state for a downlink channel according to an embodiment of the present invention, which is performed by a terminal, may comprise the steps of: receiving, from a base station, restriction information on a precoding matrix in a code book, wherein the restriction information on the precoding matrix is represented by one or more bit ...
Precoding matrix indicator pmi feedback method
Huawei Technologies Co., Ltd.
October 26, 2017 - N°20170310372

In a 3d mimo scenario with 16 antenna ports, antenna ports can be extended in different directions because of different configuration manners of the antenna ports. An apparatus and method where different antenna port counting manners are determined in different configurations are provided, so that in different configurations, a matrix whose dimension is 8 and a matrix whose dimension is 2 are determined ...
Communication system and channel estimating method thereof
Huawei Technologies Co., Ltd.
October 19, 2017 - N°20170302344

A communication system includes at least one transmitting unit and at least one receiving unit. The at least one transmitting unit is configured to transmit at least one input signal after precoding it with at least one precoding matrix. The at least one receiving unit wirelessly coupled with the at least one transmitting unit is configured to receive the at ...
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