公开(公告)号：US20190081671A1

公开(公告)日：2019-03-14

申请号：US16129771

申请日：2018-09-12

Applicant: MediaTek Inc.

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

IPC: H04B7/0456

Abstract: Various solutions with respect to codebook-based uplink transmission in wireless communications are described. A user equipment (UE) receives a first signal from a network node of a wireless network, with the first signal selecting one or more codewords or a codebook from a plurality of different codebooks within a master codebook as allowed precoders at transmission ranks. The UE also receives a second signal from the network node, with the second signal selecting a precoder among the allowed precoders for uplink (UL) transmission. The UE then processes data using the selected precoder and performs an UL transmission of the processed data to the network node.

公开(公告)号：US20180367202A1

公开(公告)日：2018-12-20

申请号：US16010458

申请日：2018-06-16

Applicant: MediaTek Inc.

Inventor： Weidong Yang ,  Tzu-Han Chou ,  Ju-Ya Chen ,  Lung-Sheng Tsai

IPC: H04B7/06 ,  H04L1/18 ,  H04L1/00

Abstract: Techniques and examples pertaining to codeword mapping in New Radio (NR) and interleaver design for NR are described. A processor of an apparatus receives, via a transceiver of the apparatus, a Physical Downlink Shared Channel (PDSCH) transmission from a network node of a wireless network. The processor maps one or more codeblocks of a codeword in the PDSCH transmission to a spatial layer group which is a subset of a plurality of spatial layers. The processor also performs receive processing for one or more codeblocks in the PDSCH transmission including by performing de-interleaving on a result from a channel interleaver or from an intra-codeblock interleaver that performs pseudo-random interleaving on systematic bits and parity bits of the one or more codeblocks and channel decoding. The processor transmits, via the transceiver, to the network node a feedback concerning the one or more codeblock and reporting a result of the channel estimation.

公开(公告)号：US20240283493A1

公开(公告)日：2024-08-22

申请号：US18440998

申请日：2024-02-14

Applicant: MediaTek Inc.

Inventor： Chia-Hao Yu ,  Tzu-Han Chou ,  Jiann-Ching Guey ,  Chin-Kuo Jao ,  Parisa Cheraghi ,  Chun-Chia Tsai

IPC: H04B7/0417 ,  H04B7/0452

CPC classification number: H04B7/0417 ,  H04B7/0452

Abstract: Various solutions for tiered channel information feedback with respect to user equipment and network apparatus in mobile communications are described. An apparatus may determine a first tier channel state information (CSI) based on a first reference signal resource measurement. The apparatus may report the first tier CSI to a network node. The apparatus may determine a second tier CSI based on the first tier CSI and based on a second reference signal resource measurement. The apparatus may report the second tier CSI to the network node. The second tier CSI may be different from the first tier CSI.

公开(公告)号：US20220060233A1

公开(公告)日：2022-02-24

申请号：US17391252

申请日：2021-08-02

Applicant: MediaTek Inc.

Inventor： Lung-Sheng Tsai ,  Jiann-Ching Guey ,  Tzu-Han Chou

IPC: H04B7/06 ,  H04L5/00 ,  H04L27/26

Abstract: Examples pertaining to reference signal sharing in mobile communications are described. An apparatus (e.g., UE) receives a plurality of reference signals comprising a first set of reference signals and a second set of reference signals. The apparatus performs time or frequency tracking based on the plurality of reference signals. Alternatively, the apparatus generates a channel state information (CSI) report associated with the plurality of reference signals and transmits the CSI report to a network.

公开(公告)号：US20200228299A1

公开(公告)日：2020-07-16

申请号：US16738120

申请日：2020-01-09

Applicant: Mediatek Inc.

Inventor： Tzu-Han Chou ,  Weidong Yang ,  Chao-Cheng Su ,  Jiann-Ching Guey

IPC: H04L5/10 ,  H04L5/00 ,  H04L27/26 ,  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 receives an indication for transmitting a particular DMRS sequence in an uplink transmission. The particular DMRS sequence is time domain based. The UE determines an adjustment to a base DMRS sequence for generating the particular DMRS sequence. The UE generates the particular DMRS sequence based on the adjustment and the base DMRS sequence. The UE modulates the particular DMRS sequence to obtain a set of symbols. The UE maps a plurality of symbols of the set of symbols to a plurality of subcarriers. The UE transmits the plurality of symbols on the plurality of subcarriers.

公开(公告)号：US10594374B2

公开(公告)日：2020-03-17

申请号：US16136215

申请日：2018-09-19

Applicant: MediaTek Inc.

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

IPC: H04B7/02 ,  H04B7/0456 ,  H04B7/0404 ,  H04B7/06 ,  H04L5/00 ,  H04L25/02

Abstract: Various solutions with respect to codebook-based uplink transmission in wireless communications are described. A user equipment (UE) generates a codebook comprising a plurality of precoders. The UE processes information using the codebook and transmits the processed information to a network node of a wireless network. In generating the codebook, the UE selects a candidate precoder from a single-stage codebook or a dual-stage codebook and performs a permutation on the candidate precoder.

公开(公告)号：US20190394733A1

公开(公告)日：2019-12-26

申请号：US16445592

申请日：2019-06-19

Applicant: Mediatek Inc.

Inventor： Weidong Yang ,  Tzu-Han Chou ,  Chao-Cheng Su

IPC: H04W52/42 ,  H04W52/14 ,  H04B1/04 ,  H04B7/0404 ,  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 reports, to a base station, a transmit capability of the UE. The UE receives, from the base station, a first signaling indicating a subset of codewords in a codebook and a second signaling selecting one of the codewords in the subset for precoding an uplink channel for transmission through a plurality of antenna ports over one or more spatial layers.

公开(公告)号：US20190103907A1

公开(公告)日：2019-04-04

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 ,  H04W72/04 ,  H04L5/00 ,  H04W76/27

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：US20190089432A1

公开(公告)日：2019-03-21

申请号：US16136215

申请日：2018-09-19

Applicant: MediaTek Inc.

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

IPC: H04B7/0456 ,  H04B7/0404 ,  H04B7/06 ,  H04L25/02 ,  H04L5/00

CPC classification number: H04B7/0456 ,  H04B7/0404 ,  H04B7/0473 ,  H04B7/0486 ,  H04B7/0639 ,  H04B7/0695 ,  H04L5/0048 ,  H04L5/0051 ,  H04L5/0091 ,  H04L25/0224 ,  H04L25/03343 ,  H04L25/03891

Abstract: Various solutions with respect to codebook-based uplink transmission in wireless communications are described. A user equipment (UE) generates a codebook comprising a plurality of precoders. The UE processes information using the codebook and transmits the processed information to a network node of a wireless network. In generating the codebook, the UE selects a candidate precoder from a single-stage codebook or a dual-stage codebook and performs a permutation on the candidate precoder.