公开(公告)号：US09954590B2

公开(公告)日：2018-04-24

申请号：US14938103

申请日：2015-11-11

Applicant: MediaTek Inc.

Inventor： Chia-Hao Yu ,  Ming-Po Chang ,  Jiann-Ching Guey

IPC: H04L12/26 ,  H04B7/06 ,  H04W16/28 ,  H04B7/08 ,  H04L5/00 ,  H04W72/12 ,  H04B7/0456

CPC classification number: H04B7/061 ,  H04B7/0456 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/088 ,  H04L1/0084 ,  H04L5/0023 ,  H04W16/28 ,  H04W72/1289

Abstract: A network control device includes a wireless communications module and a controller. The wireless communications module uses a preferred transmitting beam to communicate with a communications apparatus in one or more downlink opportunities corresponding to the preferred transmitting beam. The controller schedules signal or data to be transmitted in at least one downlink opportunity corresponding to the preferred transmitting beam. When scheduling signal or data to be transmitted, the controller further provides at least one training gap, in which the controller does not schedule any dedicated data to the communications apparatus, in the downlink opportunity corresponding to the preferred transmitting beam.

公开(公告)号：US20170054534A1

公开(公告)日：2017-02-23

申请号：US15345720

申请日：2016-11-08

Applicant: MEDIATEK INC.

Inventor： Aimin Justin Sang ,  Chia-Hao Yu ,  Yuanyuan Zhang ,  Jiann-Ching Guey

IPC: H04L5/00 ,  H04W72/08 ,  H04W36/00 ,  H04W72/04

CPC classification number: H04L5/0032 ,  H04B7/024 ,  H04B7/0408 ,  H04L5/005 ,  H04W36/0088 ,  H04W72/046 ,  H04W72/048 ,  H04W72/082 ,  Y02D70/00 ,  Y02D70/1262 ,  Y02D70/164 ,  Y02D70/442 ,  Y02D70/444

Abstract: Inter-cell coordination and beam-aware scanning with end-to-end UE-BS signaling enhancements for robust HO trigger in a beamforming mmWave network is proposed. From the network and the base station perspective, inter-BS control beam coordination is performed, coupled with neighbor-cell information advertisement to facilitate UE-side beam-aware scanning. Inter-BS CB coordination enables a variety of network planning, pre-determined or random, enhanced with UE-reports and dynamic re-coordination to minimize inter-cell interference. From UE perspective, by utilizing the advertised CB information, UE can learn serving cell and neighbor cell CB pattern for beam-aware scanning. Beam-aware scanning enables power saving fast scanning at the UE with beam-aware HO measurement of neighboring and target cells, which reduces HO latency and avoids unnecessary HO.

Abstract translation: 提出了在波束成形mmWave网络中用于鲁棒HO触发的端到端UE-BS信令增强的小区间协调和波束感知扫描。 从网络和基站的角度来看，执行BS间控制波束协调，并与邻居小区信息通告相结合，便于UE侧波束感知扫描。 BS间协调使得能够通过UE报告和动态重新协调来增强预定义或随机的各种网络规划，以最小化小区间干扰。 从UE的角度来看，通过利用所通告的CB信息，UE可以学习用于波束感知扫描的服务小区和相邻小区CB模式。 光束感知扫描使得能够在UE处能够快速扫描相邻和目标小区的波束感知HO测量，这降低了HO等待时间并避免了不必要的HO。

公开(公告)号：US20160087707A1

公开(公告)日：2016-03-24

申请号：US14725183

申请日：2015-05-29

Applicant: MEDIATEK INC.

Inventor： Jiann-Ching Guey ,  Chao-Cheng Su ,  Ju-Ya Chen

IPC: H04B7/06 ,  H04W72/04

CPC classification number: H04B7/0617 ,  H04J11/0079 ,  H04J2011/0096 ,  H04L5/0023 ,  H04L5/005 ,  H04L27/2607 ,  H04L27/2613 ,  H04L27/2628 ,  H04L27/2655

Abstract: A beamforming system synchronization architecture is proposed to allow a receiving device to synchronize to a transmitting device in time, frequency, and spatial domain in the most challenging situation with very high pathloss. A detector at the receiving device detects the presence of control beams, synchronizes to the transmission and estimates the channel response by receiving pilot signals. The detector has low complexity when exploiting the structure of the pilot signals. The detector consists of three stages that break down the synchronization procedure into less complicated steps. The detector accurately estimates the parameters required for identifying the transmit device and performing subsequent data communication.

Abstract translation: 提出了一种波束成形系统同步架构，以允许接收设备在具有非常高的路径损耗的最具挑战性的情况下在时间，频率和空间域中与发射设备同步。 在接收设备处的检测器检测控制波束的存在，与传输同步并且通过接收导频信号来估计信道响应。 当利用导频信号的结构时，检测器具有低复杂度。 检测器由三个阶段组成，将同步过程分解成不太复杂的步骤。 检测器精确估计识别发射设备和执行后续数据通信所需的参数。

公开(公告)号：US20160087706A1

公开(公告)日：2016-03-24

申请号：US14725159

申请日：2015-05-29

Applicant: MEDIATEK INC.

Inventor： Jiann-Ching Guey ,  Chao-Cheng Su ,  Ju-Ya Chen

IPC: H04B7/06 ,  H04W72/04

CPC classification number: H04B7/0617 ,  H04J11/0079 ,  H04J2011/0096 ,  H04L5/0023 ,  H04L5/005 ,  H04L27/2607 ,  H04L27/2613 ,  H04L27/2628 ,  H04L27/2655

Abstract: A beamforming system synchronization architecture is proposed to allow a receiving device to synchronize to a transmitting device in time, frequency, and spatial domain in the most challenging situation with very high pathloss. A periodically configured time-frequency resource blocks in which the transmitting device uses the same beamforming weights for its control beam transmission to the receiving device. A pilot signal for each of the control beams is transmitted in each of the periodically configured time-frequency resource blocks. Pilot symbols are inserted into pilot structures and repeated for L times in each pilot structure. The L repetitions can be implemented by one or more Inverse Fast Fourier Transfers (IFFTs) with corresponding one or more cyclic prefix (CP) lengths.

Abstract translation: 提出了一种波束成形系统同步架构，以允许接收设备在具有非常高的路径损耗的最具挑战性的情况下在时间，频率和空间域中与发射设备同步。 周期性配置的时间 - 频率资源块，其中发射设备使用相同的波束形成权重用于其对接收设备的控制波束传输。 在每个周期性配置的时间 - 频率资源块中传送每个控制波束的导频信号。 导频符号插入导频结构，并在每个导频结构中重复L次。 L个重复可以由一个或多个具有相应的一个或多个循环前缀（CP）长度的快速傅里叶逆变换（IFFT）来实现。

公开(公告)号：US12149475B2

公开(公告)日：2024-11-19

申请号：US17752819

申请日：2022-05-24

Applicant: MEDIATEK INC.

Inventor： Chien-Yi Wang ,  Jiann-Ching Guey

IPC: H04L5/00

Abstract: A method of downlink channel state information (DL CSI) computation and reporting is proposed to support high velocity in new radio (NR) systems. In a first novel aspect, two CSI reference slots are defined. CSI reference slot for CSI measurement is defined for determining which CSI-RS/SSB occasion(s) is used for computing CSI. CSI reference slot for CSI computation is defined for determining the slot where UE assumes the CSI computation should be based upon the channel at that time onwards. In a second novel aspect, UE can be configured with a CSI computation period consisting of one or N slots and can be divided into multiple sub-periods without overlap. UE can be configured to compute and report wideband CSI and subband CSI for the whole CSI computation period and/or for each sub-period.

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：US20240137139A1

公开(公告)日：2024-04-25

申请号：US18374139

申请日：2023-09-28

Applicant: MediaTek Inc.

Inventor： Pedram Kheirkhah Sangdeh ,  Gyu Bum Kyung ,  Yahia Ahmed Mahmoud Mahmoud Shabara ,  Jiann-Ching Guey

IPC: H04B17/391

CPC classification number: H04B17/3913

Abstract: Techniques pertaining to channeling state information (CSI) pre-processing are described. A user equipment (UE) that is in wireless communication with a base station node extracts eigenvectors (EVs) from CSI acquired by the UE. The UE generates pre-processed CSI for compression by a machine-learning (ML)-based encoder of the UE into CSI feedback for the base station node by at least performing one or more of a phase discontinuity compensation (PDC), a one-step polarization separation with re-ordering, or a two-step polarization separation that includes separation based on polarization type and separation by position on the EVs.

公开(公告)号：US11672012B2

公开(公告)日：2023-06-06

申请号：US17315333

申请日：2021-05-09

Applicant: MediaTek Inc.

Inventor： Jiann-Ching Guey ,  Chun-Hsuan Kuo ,  Chien-Hwa Hwang ,  Chiou-Wei Tsai ,  Ming-Po Chang

IPC: H04W4/00 ,  H04W74/08 ,  H04W74/00 ,  H04W24/00 ,  H04W48/16 ,  H04W72/12 ,  H04W72/23 ,  H04L5/00

CPC classification number: H04W74/0816 ,  H04W24/00 ,  H04W48/16 ,  H04W72/12 ,  H04W72/23 ,  H04W74/006 ,  H04L5/001

Abstract: Techniques and examples of efficient detection of a transmission session in New Radio unlicensed spectrum (NR-U) are described. An apparatus (e.g., user equipment (UE)) detects presence of an indication from a base station of a wireless network in an NR-U. The apparatus determines that a transmission opportunity (TXOP) follows the indication responsive to the detecting. The apparatus then receives a downlink (DL) transmission in the NR-U from the base station during the TXOP.

公开(公告)号：US20230171128A1

公开(公告)日：2023-06-01

申请号：US17978961

申请日：2022-11-01

Applicant: MEDIATEK INC.

Inventor： Chien-Hwa Hwang ,  Jiann-Ching Guey

IPC: H04L25/02 ,  H04L5/00

CPC classification number: H04L25/0224 ,  H04L5/005 ,  H04L5/0007

Abstract: Method and apparatus are provided for joint communication and sensing with same radio resource in a mobile communication system. An apparatus can receive a common signal from a network node. The apparatus can use the common signal as a pilot signal to perform a channel estimation. The apparatus can use the common signal as a sensing signal to perform a sensing. The common signal comprises the pilot signal and the sensing signal.

公开(公告)号：US20230007518A1

公开(公告)日：2023-01-05

申请号：US17752825

申请日：2022-05-24

Applicant: MEDIATEK INC.

Inventor： Chien-Yi Wang ,  Jiann-Ching Guey

IPC: H04W24/08 ,  H04L5/00 ,  H04L1/00

Abstract: A method of downlink channel state information (DL CSI) computation and reporting is proposed to support high velocity in new radio (NR) systems. In a first novel aspect, two CSI reference slots are defined. CSI reference slot for CSI measurement is defined for determining which CSI-RS/SSB occasion(s) is used for computing CSI. CSI reference slot for CSI computation is defined for determining the slot where UE assumes the CSI computation should be based upon the channel at that time onwards. In a second novel aspect, UE can be configured with a CSI computation period consisting of one or N slots and can be divided into multiple sub-periods without overlap. UE can be configured to compute and report wideband CSI and subband CSI for the whole CSI computation period and/or for each sub-period.