公开(公告)号：US20230209366A1

公开(公告)日：2023-06-29

申请号：US18117387

申请日：2023-03-03

Applicant: MEDIATEK INC.

Inventor： Chien-Hwa Hwang ,  Chien-Chang Li ,  Yi-Ju Liao ,  Pei-Kai Liao ,  Weidong Yang

IPC: H04W16/28 ,  H04W72/044 ,  H04L5/00 ,  H04W72/23 ,  H04L1/1829 ,  H04W74/08

CPC classification number: H04W16/28 ,  H04W72/046 ,  H04L5/0053 ,  H04W72/23 ,  H04L1/1861 ,  H04W74/08 ,  H04L5/0037 ,  H04B7/0617

Abstract: A new design for physical downlink control channel (PDCCH) is proposed for the next generation 5G new radio systems. A UE receives the configuration of a default control resource set (CORESET) in MIB/SIB from its serving base station. The default CORESET contains both common search space and UE-specific search space for candidate PDCCH transmission. A PDCCH in a default CORESET is mapped to physical resource in a distributed or localized manner. Specifically, various REG-to-CCE mapping rules are proposed to improve frequency diversity gain, or frequency selectivity gain, or to reduce latency of PDCCH processing. Further, to facilitate analog beamforming in mmWave systems, the default CORESET is transmitted in a synchronization signal (SS) block associated with a corresponding analog beam direction.

公开(公告)号：US11121814B2

公开(公告)日：2021-09-14

申请号：US16654201

申请日：2019-10-16

Applicant: Mediatek Inc.

Inventor： Lung-Sheng Tsai ,  Weidong Yang

IPC: H04L1/00 ,  H03M13/35 ,  H04B7/06 ,  H03M13/13 ,  H04L27/34 ,  H04L5/00 ,  H04B7/0417 ,  H04L1/18 ,  H04B7/0456

Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a UE. The UE determines priority levels of a plurality of messages based on at least one predetermined rule. The plurality of messages contain channel state information to be reported to a base station. The at least one predetermined rule specifies that a message including an indicator indicating at least one of a beam selection at a particular dimension and an orthogonal beam group selection has a priority level higher than a priority level of a message including an indicator indicating at least one of a beam direction from a group of beam candidates or co-phasing between two sets of antennas for two polarizations. The UE sends, to the base station, one or more messages of the plurality of messages based on the priority levels of the plurality of messages.

公开(公告)号：US20210273743A1

公开(公告)日：2021-09-02

申请号：US17325480

申请日：2021-05-20

Applicant: Mediatek Inc.

Inventor： Teemu Tapio Virtanen ,  Weidong Yang ,  Karl Marko Juhani Lampinen ,  Lung-Sheng Tsai

IPC: H04L1/00 ,  H04W72/04 ,  H04W76/28 ,  H04W24/10 ,  H04L5/00

Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a UE. The UE determines a first uplink slot on an uplink carrier for reporting channel state information. The UE determines, on a downlink carrier, a first downlink slot that is an earliest downlink slot overlaps with the first uplink slot. The UE determines a number M based on a numerology of the downlink carrier, M being an integer greater than or equal to 0. The UE measures a reference signal, received no later than a second downlink slot that is a latest valid downlink slot no later than M downlink slots prior to the first downlink slot, to generate the channel state information.

公开(公告)号：US10931354B2

公开(公告)日：2021-02-23

申请号：US16244571

申请日：2019-01-10

Applicant: Mediatek Inc.

Inventor： Lung-Sheng Tsai ,  Weidong Yang

IPC: H04B7/06 ,  H04B17/382 ,  H04W24/10 ,  H04W72/12

Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a UE. The UE receives, from a base station, a trigger for reporting M CSI reports, M being an integer greater than 0. The UE determines that P processing units are available for calculation of CSI reports, each of the P processing units indicating a predetermined amount of computing power of the UE. The UE selects N CSI reports from the M CSI reports in accordance with a predetermined rule, N being a maximum integer that allows total processing units assigned for calculation of the N CSI reports to be smaller than or equal to the P processing units. The UE updates the N CSI reports.

公开(公告)号：US10707939B2

公开(公告)日：2020-07-07

申请号：US16149339

申请日：2018-10-02

Applicant: MediaTek Inc.

Inventor： Weidong Yang ,  Tzu-Han Chou ,  Chao-Cheng Su ,  Lung-Sheng Tsai ,  Bo-Si Chen

IPC: H04B7/06 ,  H04W76/27 ,  H04L5/00 ,  H04W72/04 ,  H04B7/0456 ,  H04L25/03 ,  H04B7/0404

Abstract: Various solutions with respect to codebook-based uplink transmission in wireless communications are described. A user equipment (UE) stores information with respect to a plurality of permutations with respect to a mapping between a plurality of sounding reference signal (SRS) resources and a plurality of antenna ports at the UE. The UE receives signaling from a network node of a wireless network. The signaling contains an index identifying a permutation among the plurality of permutations. The UE performs an uplink transmission of data to the network node using one or more SRS resources of the plurality of SRS resources and one or more antenna ports of the plurality of antenna ports according to the identified permutation.

公开(公告)号：US20200153581A1

公开(公告)日：2020-05-14

申请号：US16683108

申请日：2019-11-13

Applicant: MEDIATEK INC.

Inventor： Lung-Sheng Tsai ,  Weidong Yang ,  Jiann-Ching Guey

IPC: H04L5/00 ,  H04W72/04 ,  H04L27/26

Abstract: In one novel aspect, multiple TRPs information are provided for REG bundle configuration with PDCCH transmission and reception with multiple transmission points (TRPs). The UE configures a PDCCH associated with a CORESET comprising multiple CCEs, partitions the CORESET into multiple CCE groups associated with corresponding TCI-state, which corresponds to a source TRP, configures multiple resource element group (REG) bundles each with multiple resource elements (REs), and assumes the same precoder applied on PDCCH DMRS when the REs are in the same REG bundle and are associated with the same source TRP, and wherein each source TRP transmits corresponding portion of DCI data mapping to the corresponding first and second CCE group. In one embodiment, the REG bundles are predefined with each comprises only REs associated with the same source TRP. In another embodiment, each CCE group corresponding to a source TRP is indicated for the REG bundle configurations.

公开(公告)号：US20200153497A1

公开(公告)日：2020-05-14

申请号：US16683072

申请日：2019-11-13

Applicant: MEDIATEK INC.

Inventor： Lung-Sheng Tsai ,  Cheng-Rung Tsai ,  Weidong Yang

IPC: H04B7/06 ,  H04W24/10 ,  H04B17/336

Abstract: Apparatus and methods are provided multiple transmission. In one novel aspect, TCI-state indication for non-coherent joint transmission (NCJT) channel station information (CSI) reporting is provided. The UE receives NCJT from at least a first transmission from a first transmission point (TRP) and a second transmission from a second TRP, determines a receiving (RX) spatial filter information for the NCJT and acquires channel state information (CSI) according to a report setting based on the determined RX spatial filter to simultaneously acquire at least two channel measurement resources (CMRs) and one interference measurement resource (IMR), wherein at least one CMR is from the first TRP and at least one CMR is from the second TRP. In one embodiment, the RX spatial filter information is determined based on a group-based beam reporting procedure performed by the UE. In another embodiment, the RX spatial filter information is determined based on TCI-state received from the wireless network.

公开(公告)号：US20200052844A1

公开(公告)日：2020-02-13

申请号：US16536571

申请日：2019-08-09

Applicant: MEDIATEK INC.

Inventor： Chia-Hao Yu ,  Cheng-Rung Tsai ,  Weidong Yang

IPC: H04L5/00 ,  H04W72/04

Abstract: A method of default Quasi-Co-Location (QCL) assumption for Physical Downlink Shared Channel (PDSCH) reception in NR network is proposed. When PDSCH is scheduled by a DCI over PDCCH after a Scheduling Offset, the spatial RX filter for the PDSCH reception can be determined according to a QCL indication conveyed by the DCI. When the Scheduling Offset for PDSCH reception scheduled by DCI is less than a time duration, then a default QCL assumption is applied. UE assumes that the DMRS ports of PDSCH of a serving cell are QCLed with the RS(s) with respect to QCL parameter(s) used for PDCCH QCL indication of a CORESET. The CORESET is associated with a UE-monitored search space in the latest slot with the lowest CORESET-IF on an active BWP on the serving cell.

公开(公告)号：US20200052822A1

公开(公告)日：2020-02-13

申请号：US16654201

申请日：2019-10-16

Applicant: Mediatek Inc.

Inventor： Lung-Sheng Tsai ,  Weidong Yang

IPC: H04L1/00 ,  H03M13/13 ,  H04B7/06 ,  H03M13/35 ,  H04L5/00 ,  H04L27/34

Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a UE. The UE determines priority levels of a plurality of messages based on at least one predetermined rule. The plurality of messages contain channel state information to be reported to a base station. The at least one predetermined rule specifies that a message including an indicator indicating at least one of a beam selection at a particular dimension and an orthogonal beam group selection has a priority level higher than a priority level of a message including an indicator indicating at least one of a beam direction from a group of beam candidates or co-phasing between two sets of antennas for two polarizations. The UE sends, to the base station, one or more messages of the plurality of messages based on the priority levels of the plurality of messages.

公开(公告)号：US10560169B2

公开(公告)日：2020-02-11

申请号：US15933610

申请日：2018-03-23

Applicant: MediaTek Inc.

Inventor： Weidong Yang ,  Lung-Sheng Tsai

IPC: H04B7/06 ,  H04W88/08

Abstract: A user equipment (UE) utilizes a first group of antenna ports at the UE for transmitting and receiving while utilizing a second group of antenna ports for receiving but not transmitting. The UE transmits to a base station (BS) a sounding reference signal (SRS) via the first group of antenna ports through a first channel of a communication link between the UE and the BS. The UE receives from the BS a channel state information reference signal (CSI-RS) via the first and second groups of antenna ports through the first channel and a second channel of the communication link. The UE determines an estimated channel response and a matrix such that a product of the matrix and a channel response of the first channel approximates a channel response of the second channel. The UE transmits to the BS a CSI feedback indicating at least the matrix.