公开(公告)号：US20180278316A1

公开(公告)日：2018-09-27

申请号：US15933610

申请日：2018-03-23

Applicant: MediaTek Inc.

Inventor： Weidong Yang ,  Lung-Sheng Tsai

IPC: H04B7/06

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.

公开(公告)号：US20180270835A1

公开(公告)日：2018-09-20

申请号：US15923326

申请日：2018-03-16

Applicant: Mediatek Inc.

Inventor： Bo-Si Chen ,  Weidong Yang ,  Chien-Chang Li

IPC: H04W72/08 ,  H04W72/04

CPC classification number: H04W72/082 ,  H04W72/0446 ,  H04W72/10

Abstract: A first base station on a first cell determines to communicate in a first direction with one or more UEs on the first cell in a first time slot and a second time slot, the first time slot and the second time slot being consecutive, the one or more UEs including a first UE. The first base station further determines that communication with the first UE on the first cell in the first direction interferes with communication between a second base station and a second UE on a second cell in a second direction. Communication in the second direction having a priority higher that a priority of communication in the first direction. The first base station determines, in the first time slot, to communicate with the one or more UEs on the first cell in the second direction in the second time slot.

公开(公告)号：US09985700B2

公开(公告)日：2018-05-29

申请号：US15150001

申请日：2016-05-09

Applicant: MEDIATEK INC.

Inventor： Chien-Hwa Hwang ,  Lung-Sheng Tsai ,  Yi-Ju Liao ,  Pei-Kai Liao ,  Weidong Yang

IPC: H04B7/0452 ,  H04B17/336 ,  H04W72/12 ,  H04L5/00 ,  H04L27/00

CPC classification number: H04B7/0452 ,  H04B7/063 ,  H04B7/0632 ,  H04B17/336 ,  H04J11/004 ,  H04L5/0023 ,  H04L5/0026 ,  H04L5/0028 ,  H04L5/0037 ,  H04L5/0048 ,  H04L5/006 ,  H04L5/0069 ,  H04L27/0008 ,  H04L27/183 ,  H04L27/3488 ,  H04W72/1231

Abstract: A method of performing downlink multiuser superposition transmission (MUST) with enhanced channel state information (CSI) feedback is proposed. When a user equipment (UE) reports CQI/SINR feedback for RI=RANK-2, the UE also reports a single beam CQI/SINR feedback for RI=RANK1. As a result, the scheduling base station can calculate the actual SINRs based on different MUST scenarios and thereby determining appropriate modulation and coding scheme (MCS) for the UE. Furthermore, if the granularity of the CQI table cannot reflect the high values of the single beam SINR, then a predefined scaling factor (0

公开(公告)号：US20170331606A1

公开(公告)日：2017-11-16

申请号：US15593091

申请日：2017-05-11

Applicant: MEDIATEK INC.

Inventor： Bo-Si Chen ,  Chien-Chang Li ,  Weidong Yang ,  Yih-Shen Chen

IPC: H04L5/00 ,  H04W72/04 ,  H04W76/04

CPC classification number: H04L5/0048 ,  H04L5/0007 ,  H04L5/0091 ,  H04L27/0006 ,  H04W76/27

Abstract: A method of supporting uplink aperiodic sounding reference signal (SRS) transmission in licensed assisted access (LAA) wireless communication networks is provided. In one novel aspect, a base station can configure each UE with a group ID by RRC signaling, and then use DCI to signal the group to transmit SRS in the corresponding SC-FDMA symbol. A new cell specific RNTI is introduced for the group DCI. In a first embodiment, the DCI comprises a list of group IDs, each indicating a group ID for SRS transmission in the corresponding SC-FDMA symbol in the UpPTS. In a second embodiment, the DCI comprises a number of SC-FDMA symbols in the UpPTS and an offset value of the group ID for SRS transmission. The proposed method can trigger different groups of UEs in multiple SC-FDMA symbols in a flexible way.

公开(公告)号：US20170302493A1

公开(公告)日：2017-10-19

申请号：US15474125

申请日：2017-03-30

Applicant: MEDIATEK INC.

Inventor： Weidong Yang ,  Chien-Chang Li ,  Bo-Si Chen ,  Yih-Shen Chen

IPC: H04L27/26 ,  H04W72/04 ,  H04W48/16 ,  H04L5/00 ,  H04L1/00

CPC classification number: H04L27/2666 ,  H04L1/0029 ,  H04L1/0031 ,  H04L1/0038 ,  H04L1/1819 ,  H04L1/1822 ,  H04L1/1896 ,  H04L5/0007 ,  H04W48/16 ,  H04W72/0413 ,  H04W72/0473

Abstract: A flexible and efficient physical downlink control channel (PDCCH) signaling scheme that schedules physical uplink shared channel (PUSCH) transmission over multiple subframes with Hybrid Automatic Retransmission (HARQ) support is proposed. The PDCCH has a downlink control information (DCI) format that schedules PUSCH transmission over multiple subframes. The PUSCH transmission is associated with multiple HARQ processes with non-consecutive HARQ process IDs. Furthermore, the DCI format uses joint signaling to combine HARQ process indexes, new data indication (NDI), and redundancy version (RV) to reduce signaling overhead.

公开(公告)号：US11895510B2

公开(公告)日：2024-02-06

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: H04L5/00 ,  H04W16/28 ,  H04W72/044 ,  H04W72/23 ,  H04L1/1829 ,  H04W74/08 ,  H04B7/06

CPC classification number: H04W16/28 ,  H04L1/1861 ,  H04L5/0053 ,  H04W72/046 ,  H04W72/23 ,  H04W74/08 ,  H04B7/0617 ,  H04L5/0037 ,  H04L5/0048

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：US11689267B2

公开(公告)日：2023-06-27

申请号：US16861675

申请日：2020-04-29

Applicant: Mediatek Inc.

Inventor： Lung-Sheng Tsai ,  Weidong Yang

IPC: H04B7/06 ,  H04W24/10 ,  H04L5/00 ,  H04L1/00 ,  H04W72/23

CPC classification number: H04B7/0626 ,  H04L1/0026 ,  H04L5/0057 ,  H04W24/10 ,  H04W72/23

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 monitors a respective down link control channel (DCCH) from each of a plurality of transmission and reception points (TRPs). The UE receives, from a first TRP of the plurality of TRPs, a first trigger for reporting N1 channel state information (CSI) reports within a time duration, N1 being an integer greater than 0. The UE commits to update the N1 CSI reports. The UE determines that P processing units are remaining available for calculation of CSI reports while the UE is calculating the N1 CSI reports. P is a number greater than or equal to zero. Each of the P processing units indicates a predetermined amount of computing power of the UE.

公开(公告)号：US11405929B2

公开(公告)日：2022-08-02

申请号：US16585413

申请日：2019-09-27

Applicant: MEDIATEK INC.

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

IPC: H04L5/00 ,  H04B7/06 ,  H04B7/08 ,  H04W72/08 ,  H04W72/04 ,  H04W76/19

Abstract: Aspects of the disclosure provide an electronic device including a transceiver and processing circuitry. The transceiver can be configured to wirelessly receive at least one signal from a network including a first cell. The at least one signal can indicate a link quality of a wireless link formed between the electronic device and the base station in a first cell. The processing circuitry can be configured to determine whether beam failure occurs on the first cell based on at least one signal quality of the at least one signal. When the beam failure is determined to occur on the first cell, the processing circuitry can be configured to report information of the first cell to the network indicating the beam failure on the first cell.

公开(公告)号：US11201711B2

公开(公告)日：2021-12-14

申请号：US16683089

申请日：2019-11-13

Applicant: MEDIATEK INC.

Inventor： Lung-Sheng Tsai ,  Weidong Yang ,  Cheng-Rung Tsai ,  Jiann-Ching Guey ,  Chia-Hao Yu

IPC: H04L5/00 ,  H04L27/26 ,  H04W72/04 ,  H04B17/336 ,  H04B7/06 ,  H04W24/10

Abstract: In one novel aspect, configurations for PDCCH transmission and reception with multiple transmission points are provided. The UE configures a PDCCH associated with a CORSET comprising multiple CCEs, partitions the CORSET into multiple TCI-state sets, wherein each TCI state set includes multiple CCE groups associated with corresponding TCI-state, which corresponds to a source TRP, activates one TCI state set, and receives DCI via the PDCCH, wherein the PDCCH is transmitted from at least the first source TRP and the second source TRP, and wherein each source TRP transmits corresponding portion of DCI data mapping to the corresponding first and second CCE group. The CORSET is partitioned in FDM or TDM way. In another novel aspect, a first and a second PDCCH associated with a first and a second TRP are configured for repetition transmission. The second PDCCH configuration is dependent upon the first PDCCH configuration.

公开(公告)号：US20210091839A1

公开(公告)日：2021-03-25

申请号：US17114851

申请日：2020-12-08

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 determines that the UE possesses T processing units for calculation of channel state information (CSI) reports. The UE transmits, to a base station, an indication indicating the T processing units. The UE receives, from the base station, a trigger for updating or providing M CSI reports. The UE determines that P processing units of the T processing units are available for calculation of CSI reports. The UE updates or provides N CSI reports. N is an integer smaller than or equal to M and allows processing units assigned for calculation of the N CSI reports to be smaller than or equal to the P processing units.