Lenovo (singapore) Pte. Ltd.

Motorola Mobility LLC

Motorola Corporation

Google Inc.

Zenith Electronics Corporation

Lenovo (beijing) Limited

Google Technology Holdings LLC

Lenovo Limited

Tyler A Brown

Udar Mittal

Ahmed Hindy

Colin D Frank

Vijay Nangia

Robert T Love

Michael Mao Wang

Sandeep H Krishnamurthy

Xiangyang Zhuang

Krishna Kamal Sayana

Khalid Zeineddine

Jiho Song

Hyejung Jung

Hossein Bagheri

Chenxi Zhu

Kenneth Anderson Stewart

Bruno Amizic

Ravi Kuchibhotla

Ajit Nimbalker

Haipeng Lei

Fuyun Ling

John McFarland Harris

Jialing Liu

Louay A Jalloul

Mark J Fimoff

Hao Bi

Bingchao Liu

Lee Michael Proctor

Wei Ling

Ivan Vukovic

Rajeev Agrawal

William K Morgan

Sreenivasa M Nerayanuru

Ajoy Kumar Singh

Robert Davis Battin

Dennis J Thompson

Gregory Tomezak

Pallav Sudarshan

Ravi Nory

Xiangyang Chen

Vagan Shakhgildian

Terry Michael Shaffner

Ahmed Monier Ibrahim Saleh Hindy

Frank D Colin

Stewart A Kenneth

Various aspects of the present disclosure relate to Type-II port-selection codebook generation. The method and apparatuses described herein may include a means for receiving a set of CSI reference signals and identifying a set of ports based on the set of reference signals. The method and apparatuses described herein may include a means for selecting a subset of ports from the identified set of ports and for generating a set of amplitude coefficient indicators and a set of phase coefficient indicators corresponding to the subset of ports. The method and apparatuses described herein may include a means for generating a CSI report comprising an indication of the subset of ports, the set of amplitude coefficient indicators, and the set of phase coefficient indicators, where the indication of the subset of ports comprises a combinatoric value.

Type-II port-selection codebook generation

Apparatuses, methods, and systems are disclosed for channel state information report coefficients. One method () includes receiving (), at a user equipment, a set of reference signals. The method () includes identifying () a set of ports based on the set of reference signals. The method () includes selecting () a subset of ports from the set of ports. The method () includes computing () a subset of coefficients corresponding to a set of indices for each reference signal in the set of reference signals. The method () includes generating () a channel state information report comprising the subset of coefficients corresponding to the set of indices for each port in the subset of ports.

Channel state information report coefficients

Apparatuses, methods, and systems are disclosed for Type-II port-selection codebook generation. One apparatus includes a processor and a transceiver that receives a set of CSI-RS. The processor identifies a set of CSI-RS ports based on the set of CSI-RS. The processor selects a subset of CSI-RS ports from the identified set of CSI-RS ports based on a free selection of the respective CSI-RS ports from the identified CSI-RS ports. The processor generates, based on the set of CSI-RSs, at least one amplitude coefficient indicator and at least one phase coefficient indicator for each selected CSI-RS port generates a CSI report comprising a Type-II port-selection codebook corresponding to the generated coefficients and the subset of CSI-RS ports.

Apparatuses, methods, and systems are disclosed for preparing CSI. One apparatus includes a processor and a memory with instructions executable by the processor to cause the apparatus to determine a total number of non-zero coefficients associated with a CSI codebook over a set of transmission layers and encode an indication of the total number of non-zero coefficients by selecting a codeword from a plurality of candidate codewords in which the selected codeword identifies the total number of non-zero coefficients. The instructions are executable by the processor to prepare CSI based on the CSI codebook and to transmit the CSI to a base station unit, where the CSI codebook includes a plurality of precoding matrices, and where the CSI includes the selected codeword.

Preparing CSI using a set of zero amplitude parameters

Generating a channel state information (CSI) feedback report is provided. A set of reference signals is received. A plurality of entries that are included in the CSI feedback report are computed, where the entries of the CSI feedback report include at least a set of coefficients. Each coefficient is associated with a set of indices including at least one or more of a spatial domain basis index, a frequency domain basis index, and a layer index. The plurality of entries of the CSI feedback report are arranged in an order known to both the user equipment and the network entity. The plurality of entries of the CSI feedback report are prioritized using indices corresponding to the set of indices, where a subset of the set of indices are permuted based on predefined permutations of the subset of the set of indices.

Method and apparatus for generating a channel state information report adapted to support a partial omission

One apparatus for providing high-resolution CSI feedback includes a processor and a radio transceiver. The processor computes sets of amplitude and phase parameters for one or more matrices corresponding to a CSI codebook. Here, each matrix corresponds to one transmission layer of a multiple-layer transmission, where each matrix is comprised of one or more column vectors. The radio transceiver sends indications of the sets of amplitude and phase parameters to one or more network entities is a mobile communication network.

Channel compression matrix parameters

According to a possible embodiment, a control channel can be received in a first downlink slot. The control channel can contain DCI with a downlink DCI format. The DCI can contain a CSI report trigger that triggers a CSI report. The DCI can schedule PDSCH transmissions repeated a number of times in a set of downlink slots. Each PDSCH transmission of the repeated PDSCH transmissions can be in a separate downlink slot. A CSI report can be generated in response to receiving the CSI report trigger. At least one uplink resource to transmit the generated CSI report can be determined. The at least one uplink resource can be determined based on the number of repeated PDSCH transmissions. The generated CSI report can be transmitted in the determined at least one uplink resource.

Method and apparatus for generating a CSI report

A configuration of a set of transmission configuration indicator (TCI) states associated with a serving cell is received for a physical downlink shared channel (PDSCH) transmission, each TCI state of the set of TCI states corresponds to one or more parameters for configuring a quasi-co-location (QCL) relationship between one or more downlink reference signals and one or more downlink reference signal ports associated with the PDSCH transmission. A physical downlink control channel (PDCCH) including a downlink control information (DCI) scheduling a PDSCH for the PDSCH transmission is received. A medium access control-control element (MAC-CE) is received indicating at least two configured TCI states of the set of TCI states. The at least two configured TCI states are selected based on a timing offset between a reception of the PDCCH and a reception of the PDSCH satisfying a threshold.

Method and apparatus for downlink resource allocation for multi-transmission and reception point transmission

The generation of a channel state information report is provided. The generation includes transmitting reference signals to a user equipment, and receiving a reported set of quantized weighting coefficients, each of the weighting coefficients corresponding to a respective beam index and a respective tap index, where a set of beams based on the received reference signals is selected, where each of the beams corresponds to a discrete Fourier transform vector, and where each of the beams has a corresponding beam index. The tap index corresponds to a member of a Fourier basis set, where at least two subsets of the reported set of weighting coefficients are quantized according to separate quantization procedures.

Transform domain channel state information feedback

A transceiver can transmit a codebook subset restriction configuration including a set of restricted beams. A channel state information report including a plurality of sets of quantized coefficients based on the codebook subset restriction configuration can be received. A set of quantized weights can be based on a least a Fourier transform of a set of quantized coefficients of the particular restricted beam. The plurality of sets of quantized coefficients can be based on quantized weights of the particular restricted beam satisfying a constraint. The plurality of sets of quantized coefficients can be further based on a set of coefficients quantized to determine the plurality of sets of quantized coefficients. The set of coefficients can be generated by transforming a set of beam weights from a frequency domain to a time domain, where the beam weights correspond to a transmitted beam.

Method and apparatus for transmitting precoding coefficients

For Type-II codebook compression, methods, apparatus, and systems are disclosed. One apparatus includes a transceiver and a processor coupled to the transceiver, the processor being configured to cause the apparatus to: receive a reference signal, identify a set of taps over a layer based on the reference signal, where the set of taps correspond to a set of sub-band indices. The processor is configured to cause the apparatus to generate a combinatorial codeword representing the set of taps and transmit a CSI report indicating the combinatorial codeword.

CSI feedback with Type-II codebook compression

Apparatuses, methods, and systems are disclosed for generating a CSI report. One apparatus includes a transceiver that receives a set of reference signals transmitted from a base station and a processor that transforms the set of reference signals to obtain per-layer vectors of amplitude and phase coefficients of a DFT-compressed codebook. Here, each amplitude coefficient vector and phase coefficient vector corresponding to a tap in at least one identified beam. The processor calculates a subset of the taps for the at least one identified beam and controls the transceiver to transmit CSI feedback including the calculated taps to the base station, where each tap is an inverse Fourier transform of rows of time-domain coefficient vectors and where the CSI feedback includes an indication of one or more elements of the vectors of amplitude coefficient vectors and phase coefficient vectors corresponding to the at least one identified beam.

Generating a channel state information ('CSI') report

PDSCH resource allocations can be received. Different PDSCH resource allocations of the PDSCH resource allocations can be associated with different spatial filters for a user equipment. A pre-emption indication that indicates pre-empted resources can be received. A determination can be made as to whether the pre-emption indication is applicable to a first or second PDSCH resource allocation, both the first and the second PDSCH resource allocations, or no PDSCH resource allocation. A first PDSCH corresponding to the first PDSCH resource allocation can be decoded based on no transmission being present for a UE in the pre-empted resources in response to determining the pre-emption indication is applicable to the first PDSCH resource allocation. The pre-emption indication can be a first pre-emption indication with a first bit-field size and can be indicated in a DCI containing a second pre-emption indication with a second bit-field size different than the first bit-field size.

Apparatus and method for decoding a PDSCH using pre-emption

A codebook subset restriction configuration can be received () from a network entity. A set of reference signals can be received () from the network entity. A set of frequency domain coefficients can be defined (). The set of frequency domain coefficients can be an element of a discrete Fourier transform-compression codebook. The set of frequency domain coefficients can be generated () based on at least the restriction of the function of the amplitude restriction ratio of each beam in the set of restricted beams. At least one channel state information report containing the set of frequency domain coefficients can be transmitted ().

Method and apparatus for transmitting a CSI report containing coefficients

Generating a channel state information (CSI) feedback report is provided. A set of reference signals is received (). A set of entries that are included in the CSI feedback report is computed (). Each entry has a most significant bit, and one or more remaining bits, where an order of each of the entries in the CSI feedback report are arranged based upon a bit level classification of the entries (). A value of the most significant bit of each of the entries is identified, and the entries, which have a most significant bit value corresponding to a higher bit value have the remaining bits arranged in a group that is positioned in the CSI feedback report prior to a group of tire remaining bits of the entries, which have a most significant bit value corresponding to a lower bit value ().

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Mundelein, IL, United States of America

Tyler A Brown