公开(公告)号：US12081301B2

公开(公告)日：2024-09-03

申请号：US17846981

申请日：2022-06-22

申请人： QUALCOMM Incorporated

发明人： Jing Jiang ,  Seyedkianoush Hosseini ,  Vinayak Suresh ,  John Edward Smee ,  Yu Zhang ,  Tingfang Ji

IPC分类号： H04L5/12 ,  H04B7/0417 ,  H04B7/0426 ,  H04B7/06

CPC分类号： H04B7/0626 ,  H04B7/0417 ,  H04B7/043 ,  H04B7/0617

摘要： Methods, systems, and devices for wireless communications are described. A user equipment (UE) and a network entity may support communication of a compressed channel state information (CSI) feedback. The UE and the network entity may use closed-loop feedback to improve beamforming tracking accuracy. For example, the UE may receive a CSI reference signal (CSI-RS) that is beamformed based on a channel estimate of a sounding reference signal (SRS) or a previous CSI feedback, or both. The UE may transmit a feedback message including compressed CSI that is generated through encoding a measurement of the CSI-RS. The compressed CSI may be generated based on a predicted channel estimate at the network entity, determined based on the channel estimate of the SRS or the previous CSI feedback.

公开(公告)号：US20240314765A1

公开(公告)日：2024-09-19

申请号：US18185256

申请日：2023-03-16

申请人： QUALCOMM Incorporated

发明人： Kianoush Hosseini ,  Jing Jiang ,  Yonghee Han ,  Jae Won Yoo ,  Vinayak Suresh

IPC分类号： H04W72/1263 ,  H04L1/00 ,  H04W72/23 ,  H04W72/51

CPC分类号： H04W72/1263 ,  H04L1/0003 ,  H04W72/23 ,  H04W72/51

摘要： Methods, systems, and devices for wireless communications are described. A scheduled entity transmits an indication of frequency resources that have different transmission requirements from those of other frequency resources in a smallest frequency domain scheduling unit that comprises the frequency resources for the scheduled entity. The scheduled entity receives, from a scheduling entity, signaling indicating at least one characteristic of how a channel is to be scheduled on the frequency resources from a scheduling entity. The scheduled entity communicates with the scheduling entity in accordance with the at least one characteristic.

公开(公告)号：US20240333561A1

公开(公告)日：2024-10-03

申请号：US18193564

申请日：2023-03-30

申请人： QUALCOMM Incorporated

发明人： Jing Jiang ,  Seyedkianoush Hosseini ,  Lei Xiao ,  Vinayak Suresh ,  Jae Won Yoo

IPC分类号： H04L25/03 ,  H04W72/0453 ,  H04W72/20

CPC分类号： H04L25/03828 ,  H04W72/0453 ,  H04W72/20

摘要： Methods, systems, and devices for wireless communications are described. A transmitting device may filter data tones (e.g., in edge subbands of an allocated frequency band) to achieve time domain windowing or shaping. Data tones of edge subbands of a configured frequency band may be filtered to shape a waveform such that it does not extend beyond symbol boundaries (e.g., does not result in emission leakage). In some examples, the transmitter may provide an indication of subband frequency domain shaping filters used to the receiver, to support demodulation on the receiver side. In some examples, the transmitter may indicate a demodulation reference signal (DMRS) comb structure (e.g., of the edge subbands) to the receiver, and the receiver may determine or estimate the filters of the subband frequency domain shaping based on the comb structure or the indication of the filters.

公开(公告)号：US20240214249A1

公开(公告)日：2024-06-27

申请号：US18145008

申请日：2022-12-21

申请人： QUALCOMM Incorporated

发明人： Vinayak Suresh ,  Seyedkianoush Hosseini ,  Jing Jiang

IPC分类号： H04L27/148 ,  H04L27/26

CPC分类号： H04L27/148 ,  H04L27/2605 ,  H04L27/2636

摘要： Methods, systems, and devices for wireless communications are described. Techniques described herein provide for formulating single carrier waveforms into an orthogonal frequency-division multiple access (OFDMA) framework. To fit into the cyclic prefix OFDM (CP-OFDM) grid, a frequency domain fast Fourier transform (FFT) may be applied to the single carrier waveform, a bandwidth expansion and spectrum shaping may be applied to the output of the FFT and inverse FFT (IFFT) processing may be applied to the output of the bandwidth expansion and spectrum shaping. The output of the IFFT may then be represented in an OFDM compatible manner.

公开(公告)号：US20230421219A1

公开(公告)日：2023-12-28

申请号：US17846981

申请日：2022-06-22

申请人： QUALCOMM Incorporated

发明人： Jing Jiang ,  Seyedkianoush Hosseini ,  Vinayak Suresh ,  John Edward Smee ,  Yu Zhang ,  Tingfang Ji

IPC分类号： H04B7/06 ,  H04B7/0417 ,  H04B7/0426

CPC分类号： H04B7/0626 ,  H04B7/0417 ,  H04B7/0617 ,  H04B7/043

摘要： Methods, systems, and devices for wireless communications are described. A user equipment (UE) and a network entity may support communication of a compressed channel state information (CSI) feedback. The UE and the network entity may use closed-loop feedback to improve beamforming tracking accuracy. For example, the UE may receive a CSI reference signal (CSI-RS) that is beamformed based on a channel estimate of a sounding reference signal (SRS) or a previous CSI feedback, or both. The UE may transmit a feedback message including compressed CSI that is generated through encoding a measurement of the CSI-RS. The compressed CSI may be generated based on a predicted channel estimate at the network entity, determined based on the channel estimate of the SRS or the previous CSI feedback.