公开(公告)号：US10742360B2

公开(公告)日：2020-08-11

申请号：US15952661

申请日：2018-04-13

Applicant: MediaTek Inc.

Inventor： Weidong Yang ,  Lung-Sheng Tsai ,  Tzu-Han Chou ,  Yu-Chuan Lin ,  Bo-Si Chen

IPC: H04L1/18 ,  H04B7/04 ,  H04L1/16 ,  H04B7/06 ,  H04W72/04 ,  H04B7/0456

Abstract: Techniques and examples of layer mapping, channel state information (CSI) feedback and hybrid automatic repeat request (HARQ) feedback in mobile communications are described. A user equipment (UE) receives from a base station one or more reference signals, which may be non-zero power (NZP) or zero power (ZP), on one or more time-frequency resources indicated by a network via a communication link between the UE and the base station. The UE estimates, based on the receiving, a subspace spanned by a channel response of an interfering signal. The UE determines a precoding matrix indicator (PMI) based on the estimated subspace. The UE transmits to the base station a channel state information (CSI) feedback comprising at least the PMI. The PMI may include at least a first precoder and a second precoder.

公开(公告)号：US09642153B2

公开(公告)日：2017-05-02

申请号：US14049341

申请日：2013-10-09

Applicant: MediaTek Inc.

Inventor： Ju-Ya Chen ,  Yu-Chuan Lin ,  Da-shan Shiu ,  Yih-Shen Chen ,  Chia-Hao Yu

IPC: H04W72/12 ,  H04W72/10 ,  H04W88/06 ,  H04W52/02

CPC classification number: H04W72/1215 ,  H04W52/0216 ,  H04W52/0229 ,  H04W52/0241 ,  H04W52/42 ,  H04W52/44 ,  H04W72/10 ,  H04W88/06 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/24

Abstract: In a communications apparatus first radio module communicates with a first wireless network and provides wireless communication services in compliance with a first RAT. A second radio module communicates with a second wireless network and provides wireless communication services in compliance with a second RAT. At least two antennas are shared by the first radio module and the second radio module. When the first radio module operates in an idle mode and when the timing of the first radio module performing a first receiving activity coincides with the timing of the second radio module performing a second receiving activity, the second radio module uses the antennas to perform the second receiving activity when a DRX cycle duration of the first radio module in the idle mode is shorter than a DRX cycle duration of the second radio module.

公开(公告)号：US09432950B2

公开(公告)日：2016-08-30

申请号：US14199032

申请日：2014-03-06

Applicant: MediaTek Inc.

Inventor： Ju-Ya Chen ,  Chia-Hao Yu ,  Yu-Chuan Lin ,  Yi-Chun Wei ,  Yi-Jung Chiang

IPC: H04L27/00 ,  H04W52/24 ,  H04W52/14 ,  H04W52/32 ,  H04W52/34 ,  H04W52/58

CPC classification number: H04W52/241 ,  H04W52/146 ,  H04W52/247 ,  H04W52/325 ,  H04W52/34 ,  H04W52/58

Abstract: A communications apparatus. The RF signal processing device is capable of supporting carrier aggregation and configured to process RF signals. The baseband signal processing device is configured to process baseband signals. The processor is configured to control operations of the RF signal processing device and the baseband signal processing device. The processor further receives a power control signal from a peer communications apparatus, obtains an assigned transmission power which is assigned by the peer communications apparatus for the communications apparatus to transmit a reference signal according to information carried in the power control signal, determines a spectral efficiency estimation value of the communications apparatus and directs the RF signal processing device to transmit the reference signal with a reduced transmission power which is smaller than the assigned transmission power when the spectral efficiency estimation value is smaller than a predetermined threshold.

Abstract translation: 通信装置。 RF信号处理设备能够支持载波聚合并被配置为处理RF信号。 基带信号处理装置被配置为处理基带信号。 处理器被配置为控制RF信号处理设备和基带信号处理设备的操作。 处理器还从对等通信装置接收功率控制信号，获得由对等通信装置为通信装置分配的分配的发送功率，以根据在功率控制信号中携带的信息发送参考信号，确定频谱效率 估计值，并且当频谱效率估计值小于预定阈值时，引导RF信号处理装置以具有小于所分配的发送功率的降低的发送功率发送参考信号。

公开(公告)号：US20180069685A1

公开(公告)日：2018-03-08

申请号：US15698594

申请日：2017-09-07

Applicant: MediaTek Inc.

Inventor： Weidong Yang ,  Yu-Chuan Lin ,  Chien-Hwa Hwang ,  Bo-Si Chen ,  Pei-Kai Liao ,  Yih-Shen Chen

IPC: H04L5/14 ,  H04W72/04 ,  H04W52/34

CPC classification number: H04L5/14 ,  H04L5/1469 ,  H04W52/146 ,  H04W52/242 ,  H04W52/34 ,  H04W52/346 ,  H04W52/38 ,  H04W52/383 ,  H04W52/40 ,  H04W52/46 ,  H04W72/0406 ,  H04W72/0446

Abstract: Concepts and examples pertaining to dynamic time division duplex (TDD) in wireless communication systems are described. A first node of a wireless network of a plurality of nodes exchanges coordination information, which is related to transmissions of the nodes of the wireless network using TDD, with at least a second node of the wireless network. The first node performs wireless communications with at least the second node based on the exchanged coordination information.

公开(公告)号：US20180302192A1

公开(公告)日：2018-10-18

申请号：US15952661

申请日：2018-04-13

Applicant: Steven Yen-Hsien Liu ,  MediaTek Inc.

Inventor： Weidong Yang ,  Lung-Sheng Tsai ,  Tzu-Han Chou ,  Yu-Chuan Lin ,  Bo-Si Chen

IPC: H04L1/18 ,  H04B7/04 ,  H04B7/06

Abstract: Techniques and examples of layer mapping, channel state information (CSI) feedback and hybrid automatic repeat request (HARQ) feedback in mobile communications are described. A user equipment (UE) receives from a base station one or more reference signals, which may be non-zero power (NZP) or zero power (ZP), on one or more time-frequency resources indicated by a network via a communication link between the UE and the base station. The UE estimates, based on the receiving, a subspace spanned by a channel response of an interfering signal. The UE determines a precoding matrix indicator (PMI) based on the estimated subspace. The UE transmits to the base station a channel state information (CSI) feedback comprising at least the PMI. The PMI may include at least a first precoder and a second precoder.

公开(公告)号：US09504085B2

公开(公告)日：2016-11-22

申请号：US14196310

申请日：2014-03-04

Applicant: MediaTek Inc.

Inventor： Ju-Ya Chen ,  Yu-Chuan Lin ,  Chia-Hao Yu ,  Da-shan Shiu ,  Yih-Shen Chen

IPC: H04M1/00 ,  H04W76/04 ,  H04W88/06

CPC classification number: H04W76/28 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0871 ,  H04W88/06

Abstract: A communications apparatus. A first radio module communicates with a first wireless network and provides wireless communications services. A second radio module communicates with a second wireless network and provides wireless communications services. At least two antennas shared by the first radio module and the second radio module. When the first radio module operates in a connected mode and when the timing of the first radio module performing the first receiving activity coincides with the timing of the second radio module performing a second receiving activity, the first radio module reports a value of 1 for a Rank Indicator to the first wireless network at least once before the second radio module is to perform the second receiving activity, and then the second radio module uses one of the antennas to perform the second receiving activity.

Abstract translation: 通信装置。 第一无线电模块与第一无线网络通信并提供无线通信服务。 第二无线电模块与第二无线网络通信并提供无线通信服务。 由第一无线电模块和第二无线电模块共享的至少两个天线。 当第一无线电模块以连接模式工作时，当执行第一接收活动的第一无线电模块的定时与执行第二接收活动的第二无线电模块的定时一致时，第一无线电模块向a报告值1 在第二无线电模块执行第二接收活动之前，至少一次第一无线网络的秩指示符，然后第二无线电模块使用其中一个天线来执行第二接收活动。