公开(公告)号：US20170135114A1

公开(公告)日：2017-05-11

申请号：US15341846

申请日：2016-11-02

Applicant: MEDIATEK INC.

Inventor： Chien-Hwa Hwang ,  Lung-Sheng Tsai ,  Yi-Ju Liao ,  Tsang-Wei Yu ,  Pei-Kai Liao

IPC: H04W72/08 ,  H04L25/02 ,  H04B7/04

CPC classification number: H04W72/082 ,  H04B7/0452 ,  H04J11/00 ,  H04L1/00 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0041 ,  H04L1/0048 ,  H04L1/0066 ,  H04L25/0202 ,  H04L2001/0093 ,  H04W88/08 ,  H04W92/10

Abstract: A new air interface that is interference cancellation friendly is proposed. In one novel aspect, a novel code rate assignment with rate splitting is proposed. In one embodiment, a base station decomposes a codeword {x1} into two codewords {x1a} and {x1b}. The two codewords are applied with different code rates and/or modulation orders. More specifically, the code rate or modulation order of codeword {x1a} is set appropriately so that a victim UE can decode and cancel {1a} under the channel quality of the victim UE. Typically, the channel quality of a victim UE is poorer than the channel quality of the intended UE. As a result, the MCS for {1a} can be lower than the MCS for {1b} such that the victim UE is able to apply CWIC to decode and cancel {1a}.

公开(公告)号：US20170094668A1

公开(公告)日：2017-03-30

申请号：US15277709

申请日：2016-09-27

Applicant: MEDIATEK INC.

Inventor： Lung-Sheng Tsai ,  Chien-Hwa Hwang ,  Tsang-Wei Yu ,  Yi-Ju Liao ,  Pei-Kai Liao

IPC: H04W72/04 ,  H04B7/06

Abstract: Methods of enabling multiuser superposition transmission (MUST) in LTE systems are proposed. MUST operation allows simultaneous transmission for multiple co-channel users on the same time-frequency resources. A higher-layer signaling is used for configuring a UE to enable MUST. When a UE is configured by higher layer to enable MUST, the UE will monitor physical-layer control signaling carrying scheduling information and MUST-related information. Depending on whether MUST exists in each subframe, the UE derives the power allocation between the UE and its co-channel UE on allocated resource blocks. The UE also derives the power allocation based on whether it is configured for CRS-based transmission mode or DMRS-based transmission mode.

公开(公告)号：US20160337879A1

公开(公告)日：2016-11-17

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: H04W24/02 ,  H04B7/04 ,  H04W72/08 ,  H04B17/336 ,  H04W72/04 ,  H04L5/00

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

Abstract translation: 提出了一种利用增强信道状态信息（CSI）反馈执行下行链路多用户叠加传输（MUST）的方法。 当用户设备（UE）报告RI = RANK-2的CQI / SINR反馈时，UE还报告用于RI = RANK1的单个波束CQI / SINR反馈。 结果，调度基站可以基于不同的MUST场景计算实际SINR，从而为UE确定适当的调制和编码方案（MCS）。 此外，如果CQI表的粒度不能反映单光束SINR的高值，则可以应用基站和UE都已知的预定义缩放因子（0 <β<1）。

公开(公告)号：US09252934B2

公开(公告)日：2016-02-02

申请号：US14713158

申请日：2015-05-15

Applicant: MEDIATEK INC.

Inventor： Chien-Hwa Hwang ,  Shiang-Jiun Lin ,  Yih-Shen Chen

IPC: H04L5/00 ,  H04W72/12 ,  H04W72/04 ,  H04W64/00 ,  H04L12/26 ,  H04W48/10

CPC classification number: H04L5/0048 ,  H04L5/0053 ,  H04L5/0082 ,  H04L5/0094 ,  H04L5/0096 ,  H04L43/08 ,  H04W48/10 ,  H04W64/00 ,  H04W72/0406 ,  H04W72/1278

Abstract: A method of network-based positioning using sounding reference signal (SRS) is proposed. An eNodeB configures a number of parameters of a periodic SRS transmission for a user equipment (UE). The eNodeB then transmits SRS configuration data for SRS measurements performed by a location measurement unit (LMU). The SRS configuration data includes cell-specific SRS bandwidth configuration and UE-specific SRS bandwidth configuration. The SRS configuration data may further include a number of antenna ports for SRS transmission, SRS frequency hopping bandwidth configuration, information on whether SRS sequence-group hopping is enabled, and ΔSS when SRS sequence hopping is enabled. Upon receiving the SRS configuration data, the LMU is able to perform timing measurements over the received SRS signals from the UE. In one embodiment, the LMU detects SRS dropping to avoid performance degradation of the network-based positioning.

公开(公告)号：US20160029392A1

公开(公告)日：2016-01-28

申请号：US14873302

申请日：2015-10-02

Applicant: MEDIATEK INC.

Inventor： Chien-Hwa Hwang ,  Shiang-Jiun Lin ,  Min Wu ,  Xiangyang Zhuang

IPC: H04W72/04 ,  H04W52/10 ,  H04L5/14 ,  H04W52/08

CPC classification number: H04W52/365 ,  H04L1/1861 ,  H04L5/001 ,  H04L5/1469 ,  H04W52/08 ,  H04W52/10 ,  H04W52/146 ,  H04W52/221 ,  H04W52/325 ,  H04W52/34 ,  H04W52/48 ,  H04W52/58 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/0473

Abstract: A method of separate accumulation in closed-loop power control in adaptive TDD systems is proposed. A UE obtains configuration information from a base station in an adaptive TDD system. Each radio frame comprises a plurality of subframes, which are configured into two or more subframe sets. The UE receives a transmit power control (TPC) command in a downlink subframe. The UE determines a power control adjustment state for an uplink subframe i based on the TPC command. The power control adjustment state of subframe i is accumulated from a power control adjustment state of a previous uplink subframe j, where subframe i and subframe j belong to the same subframe set. In one embodiment, subframe j is the closest previous uplink subframe with respect to uplink subframe i.

Abstract translation: 提出了一种在自适应TDD系统中闭环功率控制中单独累积的方法。 UE在自适应TDD系统中从基站获取配置信息。 每个无线电帧包括被配置成两个或多个子帧集合的多个子帧。 UE在下行链路子帧中接收发送功率控制（TPC）命令。 UE根据TPC命令确定上行链路子帧i的功率控制调整状态。 从前一个上行链路子帧j的功率控制调整状态累加子帧i的功率控制调整状态，其中子帧i和子帧j属于同一子帧组。 在一个实施例中，子帧j相对于上行链路子帧i是最近的上一个上行链路子帧。

公开(公告)号：US09019931B2

公开(公告)日：2015-04-28

申请号：US14514671

申请日：2014-10-15

Applicant: MediaTek Inc.

Inventor： Ciou-Ping Wu ,  Chien-Hwa Hwang ,  Yu-Hao Chang

IPC: H04W4/00 ,  H04L5/00 ,  H04W72/12 ,  H04L1/18 ,  H04B15/00 ,  H04L27/26 ,  H04W24/02

CPC classification number: H04L5/0032 ,  H04B15/00 ,  H04L1/1861 ,  H04L5/0053 ,  H04L27/2601 ,  H04W24/02 ,  H04W72/1289

Abstract: A communications apparatus is provided. A controller module generates a suggested sub-frame pattern describing suggested arrangement of one or more almost blank sub-frame(s) in one or more frame(s) and schedules control signal and/or data transmissions according to the suggested sub-frame pattern. A transceiver module transmits at least a first signal carrying information regarding the suggested sub-frame pattern to a peer communications apparatus. The peer communications apparatus does not schedule data transmissions in the almost blank sub-frame(s).

Abstract translation: 提供一种通信装置。 控制器模块产生描述在一个或多个帧中的一个或多个几乎空白子帧的建议排列的建议子帧模式，并且根据建议的子帧模式调度控制信号和/或数据传输 。 收发器模块至少将携带关于所建议的子帧模式的信息的第一信号发送到对等通信装置。 对等通信装置不调度几乎空白的子帧中的数据传输。

公开(公告)号：US11659430B2

公开(公告)日：2023-05-23

申请号：US17739047

申请日：2022-05-06

Applicant: MEDIATEK INC.

Inventor： Chien-Hwa Hwang ,  Wei-De Wu ,  Yiju Liao ,  Cheng-Hsun Li ,  Chi-Hsuan Hsieh

IPC: H04W28/02 ,  H04W52/02 ,  H04W36/00 ,  H04L5/00 ,  H04W72/51

CPC classification number: H04W28/0221 ,  H04L5/0032 ,  H04W36/0069 ,  H04W52/0216 ,  H04W72/51

Abstract: A method of UE power profile adaptation to traffic and UE power consumption characteristics based on power profile is proposed. In one preferred embodiment, hybrid of bandwidth part (BWP) and power profile is proposed. UE is configured with multiple BWPs and each BWP includes a set of power profiles. Two types of adaptation triggering can be used, a first type of trigger is based on power saving signals sent from the network, and the second type of trigger is based on timers. When the traffic characteristic for UE changes, the network can send a power saving signal to UE to trigger power profile adaptation, e.g., BWP+power profile switching. When traffic has been digested and becomes sporadic, then power profile adaptation can be triggered based on timers, e.g., a timer for BWP adaptation and another timer for power profile adaptation.

公开(公告)号：US11317379B2

公开(公告)日：2022-04-26

申请号：US16916270

申请日：2020-06-30

Applicant: Mediatek Inc.

Inventor： Lung-Sheng Tsai ,  Chien-Hwa Hwang ,  Yi-Ju Liao

IPC: H04L5/00 ,  H04W72/04 ,  H04W72/02 ,  H04W88/02 ,  H04L29/12 ,  H04W8/24 ,  H04W72/12

Abstract: A UE determines N1 component carriers on each of which the UE is configured to detect a respective one PDCCH in a slot. The UE determines N2 component carriers on each of which the UE is configured to detect respective at least two PDCCHs in the slot. The UE determines a total Q blind detections of PDCCH that the UE is capable of performing. The UE determines a first predetermined scaling factor X. The UE allocates M1 blind detections of the Q blind detections to be available on each of the N1 component carriers and M2 blind detections of the Q blind detections to be available on each of the N2 component carriers such that (N1*M1+N2*M2) is a largest integer no greater than Q. M2 equals to X*M1. The UE performs blind detections in accordance with the allocations.

公开(公告)号：US20210083704A1

公开(公告)日：2021-03-18

申请号：US17108138

申请日：2020-12-01

Applicant: MEDIATEK INC.

Inventor： Pei-Kai Liao ,  Chun-Ming Kuo ,  Chien-Hwa Hwang ,  Jiann-Ching Guey

IPC: H04B1/12 ,  H04W72/04

Abstract: A method of providing over-the-air assistance information for interference cancellation or suppression to the receiver is proposed. Under a first solution, a two-stage DCI (downlink control information) or SCI (sidelink control information) scheduling method is proposed. The set of first-stage DCI or SCI provides a part of scheduling information which is beneficial for interference cancellation or suppression and is broadcasted by a transmitter or scheduler to all receivers. The set of second-stage DCI or SCI includes the remaining scheduling information and is unicasted by a transmitter or scheduler to each receiver. Under a second solution, assistance information DCI for interference cancellation or suppression is broadcasted by a transmitter or scheduler to all receivers.

公开(公告)号：US10779171B2

公开(公告)日：2020-09-15

申请号：US16127481

申请日：2018-09-11

Applicant: MEDIATEK INC.

Inventor： Chia-Hao Yu ,  Ming-Po Chang ,  Chiou-Wei Tsai ,  Chien-Hwa Hwang ,  Jiann-Ching Guey

IPC: H04W24/04 ,  H04W74/08 ,  H04W16/28 ,  H04B7/06 ,  H04W76/19 ,  H04B7/08

Abstract: A method of beam failure recovery request (BFRQ) transmission is proposed. UE can search for UE-specific control channel in a search space that is signaled specifically for monitoring network response of the BFRQ. Furthermore, configurations indicated specifically for BFRQ can be carried by dedicated signaling such as high-layer radio resource control (RRC) signaling. After successfully rebuilding connection, UE assumes the demodulation reference signal (DMRS) ports of UE-specific control channel to be spatially quasi-co-located (QCL-ed) with the reference signals identified during the beam failure recovery procedure.