公开(公告)号：US20230081552A1

公开(公告)日：2023-03-16

申请号：US17886974

申请日：2022-08-12

Applicant: MEDIATEK INC.

Inventor： Kuan-Hung CHOU ,  Chin-Kuo JAO

IPC: H04L5/00 ,  H04W52/42 ,  H04B7/06

Abstract: A method for codebook-based uplink transmission is described. A sounding reference signal (SRS) configuration can be received from a base station at a user equipment (UE). The UE has N antenna groups. N is an integer greater than two. The SRS configuration indicates N SRS resources for the N antenna groups, respectively. An SRS transmission can be performed using the N SRS resources from the N antenna groups, respectively. A downlink control information (DCI) can be received from the base station. The DCI indicates two SRIs associated with two of the N SRS resources. The DCI indicates two transmission precoder matrix indicators (TPMIs). A PUSCH can be transmitted using two antenna groups of the N antenna groups corresponding to the two SRIs indicated in the DCI and two precoders corresponding to the two TPMIs indicated in the DCI.

公开(公告)号：US20230291454A1

公开(公告)日：2023-09-14

申请号：US18169711

申请日：2023-02-15

Applicant: MEDIATEK INC.

Inventor： Kuan-Hung CHOU ,  Chin-Kuo JAO ,  Sandeep BHAT

IPC: H04B7/06 ,  H04L5/00 ,  H04B7/10

CPC classification number: H04B7/0626 ,  H04B7/0639 ,  H04B7/10 ,  H04L5/0035 ,  H04L5/0051

Abstract: A method of channel state information (CSI) report can include receiving a CSI report configuration at a user equipment (UE) from a base station, the CSI report configuration being associated with a set of CSI reference signal (CSI-RS) resources corresponding to multiple transmission reception points (TRPs), performing a channel measurement based on the CSI-RSs resources corresponding to the multiple TRPs, determining a precoder matrix indicator (PMI) based on measurement results of the channel measurement, the PMI corresponding to a precoder matrix, denoted W, of a Type II CSI codebook, the precoder matrix having a spatial domain (SD) basis vector matrix, denoted W1, SD basis selection of the SD basis vector matrix being TRP-specific, and transmitting a CSI report to the base station, the CSI report including the PMI.

公开(公告)号：US20250071742A1

公开(公告)日：2025-02-27

申请号：US18726301

申请日：2023-03-21

Applicant: MEDIATEK INC.

Inventor： Chia-Hao YU ,  Tzu-Han CHOU ,  Chin-Kuo JAO ,  Jiann-Ching GUEY

IPC: H04W72/0453 ,  H04W72/044

Abstract: Various solutions for channel information feedback with prior information with respect to user equipment and network apparatus in mobile communications are described. An apparatus may receive a reference signal transmitted by a network side including at least one network node. The apparatus may obtain at least one selected basis. The apparatus may derive a channel response information observed by a receiving domain of the apparatus according to the reference signal. The apparatus may decompose the channel response information into a preferred domain. The apparatus may determine a simplified linear combination coefficient representation of the channel response information in the preferred domain according to the selected basis. The apparatus May report a compressed channel information to the network side based on the simplified linear combination coefficient representation and the preferred domain.

公开(公告)号：US20230088818A1

公开(公告)日：2023-03-23

申请号：US17892372

申请日：2022-08-22

Applicant: MEDIATEK INC.

Inventor： Kuan-Hung CHOU ,  Chin-Kuo JAO

IPC: H04B7/06 ,  H04B7/0456 ,  H04L5/00

Abstract: A method of channel state information (CSI) report can include receiving a CSI report configuration at a user equipment (UE) from a base station. The CSI report configuration indicates CSI reference signal (CSI-RS) resources configured for transmitting CSI-RSs from multiple transmission and reception points (TRPs). An CSI-RS measurement process can be performed at the UE based on the CSI-RSs transmitted from the multiple TRPs using the CSI-RS resources indicated by the CSI report configuration. A CSI report can be transmitted from the UE to the base station based on the CSI report configuration. The CSI report includes information of one or more phase differences or one or more amplitude differences among the CSI-RSs transmitted from the multiple TRPs.

公开(公告)号：US20230291452A1

公开(公告)日：2023-09-14

申请号：US18169613

申请日：2023-02-15

Applicant: MEDIATEK INC.

Inventor： Kuan-Hung CHOU ,  Chin-Kuo JAO ,  Sandeep BHAT

IPC: H04B7/06 ,  H04L5/00

CPC classification number: H04B7/0626 ,  H04L5/0035 ,  H04L5/0051 ,  H04B7/0639 ,  H04B7/0632

Abstract: A method of channel state information (CSI) report can include receiving a CSI report configuration at a user equipment (UE) from a base station, the CSI report configuration being associated with a set of CSI reference signal (CSI-RS) resources corresponding to multiple transmission reception points (TRPs), performing a channel measurement based on the CSI-RSs resources corresponding to the multiple TRPs, determining a precoder matrix indicator (PMI) based on measurement results of the channel measurement, the PMI corresponding to a precoder matrix, denoted W, of a Type II CSI codebook, the precoder matrix having a spatial domain (SD) basis vector matrix, denoted W1, SD basis selection of the SD basis vector matrix being TRP-specific, and transmitting a CSI report to the base station, the CSI report including the PMI.

公开(公告)号：US20250158678A1

公开(公告)日：2025-05-15

申请号：US18836040

申请日：2023-03-20

Applicant: MEDIATEK INC.

Inventor： Chia-Hao YU ,  Tzu-Han CHOU ,  Chin-Kuo JAO ,  Jiann-Ching GUEY

IPC: H04B7/06 ,  H04L5/00

Abstract: Various solutions for channel information feedback with respect to user equipment and network apparatus in mobile communications are described. An apparatus may receive a reference signal transmitted by a network side including one or more than one network nodes. The apparatus may derive a channel response information observed by a receiving domain of the apparatus according to the reference signal. The apparatus may decompose the channel response information into a two-dimensional domain to obtain a linear combination coefficient representation of the channel response information in the two-dimensional domain. The apparatus may report a compressed channel information to the network side based on the linear combination coefficient representation and the two-dimensional domain.

公开(公告)号：US20230291453A1

公开(公告)日：2023-09-14

申请号：US18169672

申请日：2023-02-15

Applicant: MEDIATEK INC.

Inventor： Kuan-Hung CHOU ,  Chin-Kuo JAO ,  Sandeep BHAT

IPC: H04B7/06 ,  H04L5/00

CPC classification number: H04B7/0626 ,  H04L5/0035 ,  H04L5/0051 ,  H04B7/0639 ,  H04B7/0623

Abstract: A method of channel state information (CSI) report can include receiving a CSI report configuration at a user equipment (UE) from a base station, the CSI report configuration being associated with a set of CSI reference signal (CSI-RS) resources corresponding to multiple transmission reception points (TRPs), performing a channel measurement based on the CSI-RSs resources corresponding to the multiple TRPs, determining a precoder matrix indicator (PMI) based on measurement results of the channel measurement, the PMI corresponding to a precoder matrix, denoted W, of a Type II CSI codebook, the precoder matrix having a spatial domain (SD) basis vector matrix, denoted W1, SD basis selection of the SD basis vector matrix being TRP-specific, and transmitting a CSI report to the base station, the CSI report including the PMI.