公开(公告)号：US20180323918A1

公开(公告)日：2018-11-08

申请号：US15969510

申请日：2018-05-02

Applicant: MediaTek Inc.

Inventor： Chiao-Yao Chuang ,  Song-Jheng Lin ,  Jianxuan Du ,  Yen-Hui Yeh

IPC: H04L5/00 ,  H04W72/04 ,  H04L25/02 ,  H04L27/26

CPC classification number: H04L5/005 ,  H04L25/0232 ,  H04L27/2657 ,  H04W72/042 ,  H04W72/044

Abstract: Techniques and examples of tracking reference signal and framework thereof in mobile communications are described. A user equipment (UE) receives, from a base station of a network, a reference signal via a communication link between the UE and the base station. The reference signal contains resource configuration with respect to tracking reference signal (TRS) configuration. The UE also receives, from the base station, a TRS burst containing a plurality of TRS symbols with one or more components of the UE configured according to the TRS configuration. The UE processes the TRS burst to perform channel estimation, synchronization, time tracking, frequency tracking, or a combination thereof.

公开(公告)号：US11652595B2

公开(公告)日：2023-05-16

申请号：US16833533

申请日：2020-03-28

Applicant: MediaTek Inc.

Inventor： Chiao-Yao Chuang ,  Song-Jheng Lin ,  Jianxuan Du ,  Yen-Hui Yeh

IPC: H04L25/02 ,  H04L5/00 ,  H04W72/044 ,  H04L27/26 ,  H04W72/04 ,  H04B7/024

CPC classification number: H04L5/005 ,  H04B7/024 ,  H04L5/0048 ,  H04L25/0232 ,  H04L27/261 ,  H04L27/2657 ,  H04W72/042 ,  H04W72/044

Abstract: Techniques and examples of tracking reference signal and framework thereof in mobile communications are described. A user equipment (UE) receives, from a base station of a network, a reference signal via a communication link between the UE and the base station. The reference signal contains resource configuration with respect to tracking reference signal (TRS) configuration. The UE also receives, from the base station, a TRS burst containing a plurality of TRS symbols with one or more components of the UE configured according to the TRS configuration. The UE processes the TRS burst to perform channel estimation, synchronization, time tracking, frequency tracking, or a combination thereof.

公开(公告)号：US11082107B2

公开(公告)日：2021-08-03

申请号：US16295905

申请日：2019-03-07

Applicant: MediaTek Inc.

Inventor： Lung-Sheng Tsai ,  Chiao-Yao Chuang

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

Abstract: Various examples with respect to frequency-selective precoding for uplink (UL) transmissions in mobile communications are described. A processor of a user equipment (UE) receives signaling from a network node of a wireless network. The processor then performs a codebook-based UL transmission to the network node with frequency-selective precoding in a subband of a plurality of subbands according to the signaling received from the network. For non-codebook-based UL transmissions, the processor performs a non-codebook-based UL transmission of a beamformed sounding reference signal (SRS) to the network node by determining a precoder and performing frequency-selective precoding on the SRS using the precoder with a size of precoder bundling for the frequency-selective precoding in a frequency domain known by the network node.

公开(公告)号：US20190222287A1

公开(公告)日：2019-07-18

申请号：US16367661

申请日：2019-03-28

Applicant: MediaTek Inc.

Inventor： Weidong Yang ,  Lung-Sheng Tsai ,  Chien-Yi Wang ,  Chiao-Yao Chuang ,  Kuhn-Chang Lin

IPC: H04B7/06 ,  H04B7/0417 ,  H04L25/02 ,  H04B7/0452

CPC classification number: H04B7/0658 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0626 ,  H04L25/0204 ,  H04L25/021 ,  H04L25/0226 ,  H04L25/0242

Abstract: Techniques and examples of overhead reduction for linear combination codebook and feedback mechanism in mobile communications are described. A user equipment (UE) receives from a base station of a network one or more reference signals via a communication link between the UE and the base station. The UE constructs a channel state information (CSI) feedback by utilizing a correlation of channel responses in a frequency domain to reduce feedback overhead. The UE then transmits the CSI feedback to the base station.

公开(公告)号：US20180323854A1

公开(公告)日：2018-11-08

申请号：US15969747

申请日：2018-05-02

Applicant: MediaTek Inc.

Inventor： Weidong Yang ,  Lung-Sheng Tsai ,  Chien-Yi Wang ,  Chiao-Yao Chuang ,  Kuhn-Chang Lin

IPC: H04B7/06 ,  H04B7/0452 ,  H04B7/0417 ,  H04L25/02

CPC classification number: H04B7/0658 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0626 ,  H04L25/021 ,  H04L25/0242

Abstract: Techniques and examples of overhead reduction for linear combination codebook and feedback mechanism in mobile communications are described. A user equipment (UE) receives from a base station of a network one or more reference signals via a communication link between the UE and the base station. The UE constructs a channel state information (CSI) feedback by utilizing a correlation of channel responses in a frequency domain to reduce feedback overhead. The UE then transmits the CSI feedback to the base station.