公开(公告)号：US20150036629A1

公开(公告)日：2015-02-05

申请号：US14515752

申请日：2014-10-16

Applicant: MEDIATEK INC.

Inventor： I-Kang Fu ,  Po-Yuen Cheng ,  Pei-Kai Liao

IPC: H04W72/04 ,  H04W72/02 ,  H04L5/00 ,  H04J11/00

CPC classification number: H04W72/0453 ,  H04J11/00 ,  H04L5/0007 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0039 ,  H04L5/0044 ,  H04L5/0048 ,  H04L5/0053 ,  H04L25/03343 ,  H04L25/03821 ,  H04L27/2626 ,  H04L27/2646 ,  H04L27/2666 ,  H04W72/02

Abstract: A method of data transmission over guard sub-carriers is provided in a multi-carrier OFDM system. Adjacent radio frequency (RF) carriers are used to carry radio signals transmitted through adjacent frequency channels. A plurality of guard sub-carriers between adjacent frequency channels are aligned and identified for data transmission in a pre-defined physical resource unit. The identified guard sub-carriers do not overlap with normal data sub-carriers of the radio signals transmitted through the adjacent frequency channels. At least one of the identified guard sub-carriers is reserved as NULL sub-carrier. A flexible multi-carrier transceiver architecture is also provided in a multi-carrier OFDM system. Different multi-carrier and/or MIMO/SISO data transmission schemes are implemented by adaptively reconfigure same hardware modules including common MAC layer module, physical layer entities, and RF entities. Furthermore, the flexible multi-carrier transceiver architecture can be used to support data transmission over guard sub-carriers.

Abstract translation: 在多载波OFDM系统中提供了一种在保护子载波上进行数据传输的方法。 相邻射频（RF）载波用于携带通过相邻频道传输的无线电信号。 在预定义的物理资源单元中，对齐和识别相邻频道之间的多个保护子载波用于数据传输。 所识别的保护子载波不与通过相邻频道发送的无线电信号的正常数据子载波重叠。 所确定的保护子载波中的至少一个被保留为空子载波。 在多载波OFDM系统中还提供灵活的多载波收发器架构。 通过自适应地重新配置包括公共MAC层模块，物理层实体和RF实体的相同硬件模块来实现不同的多载波和/或MIMO / SISO数据传输方案。 此外，灵活的多载波收发器架构可以用于支持保护子载波上的数据传输。

公开(公告)号：US20150003405A1

公开(公告)日：2015-01-01

申请号：US14315072

申请日：2014-06-25

Applicant: MEDIATEK INC.

Inventor： Pei-Kai Liao ,  Xiangyang Zhuang

IPC: H04L5/00

CPC classification number: H04L5/0053

Abstract: New enhanced physical broadcast channel (EPBCH) based on UE-specific reference signals (DMRS) for MIB and SIB transmission is proposed. The overall design consideration for EPBCH can be summarized as follows: support different values of frequency reuse factor, support different cell coverage sizes, maximized diversity gain in open-loop operation such as transmit diversity and frequency diversity, minimized overhead, and minimized UE complexity.

Abstract translation: 提出了基于用于MIB和SIB传输的UE专用参考信号（DMRS）的新增强物理广播信道（EPBCH）。 EPBCH的总体设计考虑可以总结如下：支持频率复用因子的不同值，支持不同的小区覆盖大小，开环操作中的最大化分集增益，如发射分集和频率分集，最小化开销和最小化的UE复杂度。

公开(公告)号：US20130286980A1

公开(公告)日：2013-10-31

申请号：US13927113

申请日：2013-06-26

Applicant: Mediatek, Inc.

Inventor： Pei-Kai Liao ,  Hua-Min Chen ,  Xiangyang Zhuang

IPC: H04W72/04

CPC classification number: H04W72/1289 ,  H04L1/0045 ,  H04L1/0061 ,  H04L1/0072 ,  H04L5/0023 ,  H04L5/0025 ,  H04L5/0053 ,  H04W16/32 ,  H04W48/16 ,  H04W72/042 ,  H04W72/0453 ,  H04W72/046 ,  H04W72/0493 ,  H04W88/02 ,  H04W88/08

Abstract: A two-level physical structure is defined for better diversity for both distributed and localized transmission in enhanced physical downlink control channel (ePDCCH). First level is a physical unit of enhanced resource element groups (eREGs), where the group of REs is predefined for each eREG. Second level is a logical unit of enhanced control channel elements (eCCEs), where the group of eREGs is predefined or configurable by higher layer for each eCCE. For distributed transmission of ePDCCH, eCCE consists of several eREGs that are distributed in multiple non-contiguous PRBs spreading over the whole channel frequency. Downlink control information (DCI) is transmitted on a number of aggregated eCCEs according to the modulation and coding level required. The utilization reference signals of antenna ports for ePDCCH demodulation is based on the logical order of eCCEs and the aggregation level for DCI transmission.

Abstract translation: 定义了两级物理结构，用于在增强的物理下行链路控制信道（ePDCCH）中用于分布式和局部传输的更好的分集。 第一级是增强资源元素组（eREG）的物理单位，其中RE组是为每个eREG预定义的。 第二级是增强的控制信道单元（eCCE）的逻辑单元，其中eEGE组由每个eCCE预定义或由更高层配置。 对于ePDCCH的分布式传输，eCCE由分布在整个信道频率上扩展的多个非连续PRB中的若干eREG组成。 下行链路控制信息（DCI）根据所需的调制和编码等级在多个聚合的eCCE上发送。 用于ePDCCH解调的天线端口的利用参考信号基于eCCE的逻辑顺序和DCI传输的聚合级别。

公开(公告)号：US20130250910A1

公开(公告)日：2013-09-26

申请号：US13848987

申请日：2013-03-22

Applicant: MEDIATEK, INC.

Inventor： Pei-Kai Liao ,  Yih-Shen Chen

IPC: H04W36/08

CPC classification number: H04W76/27 ,  H04L1/1812 ,  H04L5/001 ,  H04L5/0035 ,  H04L5/0053 ,  H04L5/0094 ,  H04W16/32 ,  H04W24/04 ,  H04W36/08 ,  H04W72/0406 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/0426 ,  H04W72/1289 ,  H04W74/0833 ,  H04W88/02 ,  H04W88/08

Abstract: Methods of multi-point carrier aggregation configuration and data forwarding are disclosed. In one embodiment of the invention, a primary connection is established between a UE and a primary base station in a primary cell with a first UE-ID. A second connection is configured between the UE and a second base station in a secondary cell with a second UE-ID. Component carriers from the primary and the second connections are configured and aggregated. Mobility management functions are performed on the primary connection. In another embodiment of the current invention, a first UE data is received from a primary connection with a UE connecting to a first base station, a second UE data is received from a second base station. The first UE data and the second UE data are combined. A third UE data from a network entity is distributed to the first and the second base station.

Abstract translation: 公开了多点载波聚合配置和数据转发的方法。 在本发明的一个实施例中，在具有第一UE-ID的主小区中的UE与主基站之间建立主连接。 在UE与具有第二UE-ID的辅助小区中的第二基站之间配置第二连接。 来自主要和第二个连接的组件载体被配置和聚合。 移动性管理功能在主连接上执行。 在本发明的另一个实施例中，从与第一基站连接的UE的主要连接中接收第一UE数据，从第二基站接收第二UE数据。 组合第一UE数据和第二UE数据。 来自网络实体的第三UE数据被分配到第一和第二基站。

公开(公告)号：US20250168649A1

公开(公告)日：2025-05-22

申请号：US18901046

申请日：2024-09-30

Applicant: MediaTek Inc.

Inventor： Yi-Chia Lo ,  Din-Hwa Huang ,  Cheng-Hsun Li ,  Wei-De Wu ,  Pei-Kai Liao

IPC: H04W16/14 ,  H04L5/00 ,  H04W8/22 ,  H04W72/1273 ,  H04W72/231 ,  H04W74/0833

Abstract: Various solutions for multi-radio access technology (RAT) spectrum sharing in mobile communications are described. An apparatus utilizing a first RAT may transmit user equipment (UE) capability information to a first network node of the first RAT, wherein the UE capability information indicates that the apparatus supports multi-RAT spectrum sharing (MRSS). Then, the apparatus may receive a signaling from the first network node, wherein the signaling indicates the apparatus to provide channel information for MRSS. Based on the signaling, the apparatus may perform at least one of the following: (i) transmitting a measurement report of a channel state information-reference signal (CSI-RS) of a second RAT to the first network node; and (ii) transmitting a sounding reference signal (SRS) or a physical random access channel (PRACH) to a second network node of the second RAT.

公开(公告)号：US20240057109A1

公开(公告)日：2024-02-15

申请号：US18228025

申请日：2023-07-31

Applicant: MediaTek Inc.

Inventor： Chi-Hsuan Hsieh ,  Yi-Ju Liao ,  Wei-De Wu ,  Pei-Kai Liao

IPC: H04W72/232 ,  H04W72/1263

CPC classification number: H04W72/232 ,  H04W72/1263

Abstract: Various solutions for improvement of scheduling multi-cell PUSCH/PDSCH transmission with a single DCI are described. An apparatus may receive a DCI scheduling cells from a network node. The DCI includes at least one of a first DCI, a second DCI, and a third DCI. The apparatus may determine a DCI size budget of the DCI counted in one cell. The apparatus may perform a DCI decoding according to the DCI size budget and perform a PDSCH reception or a PUSCH transmission with at least one cell based on the DCI. The first DCI includes a common bit field, a first specific bit field and a plurality of designated bit fields corresponding to the cells, the second DCI includes the common bit field, a second specific bit field and a first part of the designated bit fields, and the third DCI includes a second part of the designated bit fields.

公开(公告)号：US11895510B2

公开(公告)日：2024-02-06

申请号：US18117387

申请日：2023-03-03

Applicant: MEDIATEK INC.

Inventor： Chien-Hwa Hwang ,  Chien-Chang Li ,  Yi-Ju Liao ,  Pei-Kai Liao ,  Weidong Yang

IPC: H04L5/00 ,  H04W16/28 ,  H04W72/044 ,  H04W72/23 ,  H04L1/1829 ,  H04W74/08 ,  H04B7/06

CPC classification number: H04W16/28 ,  H04L1/1861 ,  H04L5/0053 ,  H04W72/046 ,  H04W72/23 ,  H04W74/08 ,  H04B7/0617 ,  H04L5/0037 ,  H04L5/0048

Abstract: A new design for physical downlink control channel (PDCCH) is proposed for the next generation 5G new radio systems. A UE receives the configuration of a default control resource set (CORESET) in MIB/SIB from its serving base station. The default CORESET contains both common search space and UE-specific search space for candidate PDCCH transmission. A PDCCH in a default CORESET is mapped to physical resource in a distributed or localized manner. Specifically, various REG-to-CCE mapping rules are proposed to improve frequency diversity gain, or frequency selectivity gain, or to reduce latency of PDCCH processing. Further, to facilitate analog beamforming in mmWave systems, the default CORESET is transmitted in a synchronization signal (SS) block associated with a corresponding analog beam direction.

公开(公告)号：US11589239B2

公开(公告)日：2023-02-21

申请号：US16733580

申请日：2020-01-03

Applicant: MEDIATEK INC.

Inventor： Pei-Kai Liao

IPC: H04W16/14 ,  H04L5/00 ,  H04W74/08 ,  H04W72/04 ,  H04W72/0453

Abstract: A method of efficient wideband operation for intra-band non-contiguous spectrum using extending bandwidth part (BWP) configuration is proposed. The BWP definition is extended to cluster BWPs to aggregate distributed spectrum blocks within a frequency range (e.g., 200 MHz) by single carrier operation and facilitate UE to filter out the transmission of unknown RAT between any two of the distributed spectrum blocks. In addition, the cluster BWP configuration enables dynamic aggregation of the number and location of the distributed spectrum blocks based on LBT results in unlicensed spectrum. Specifically, the BWP definition is extended to a group of one or multiple radio resource clusters, each of which contains a set of contiguous PRBs in frequency domain within the associated carrier.

公开(公告)号：US20200344665A1

公开(公告)日：2020-10-29

申请号：US16860265

申请日：2020-04-28

Applicant: MEDIATEK INC.

Inventor： Pei-Kai Liao

IPC: H04W40/22 ,  H04W72/04 ,  H04W76/14 ,  H04W72/02

Abstract: A method to use UE as a mobile device relay using PC5 link or sidelink to relay data traffic to/from end UEs for coverage extension is proposed. A relay UE can be the group head UE of a UE relay group including one or more remote UEs. A remote UE can be in-coverage or out-of-coverage of the serving cell served by a serving base station. In a first novel aspect, the network is aware of remote UE existence without direct Uu link. In addition, methods for resource allocation and interference management are proposed. In a second novel aspect, solutions for synchronization of remote UEs on PC5 link, and solutions for connection setup between relay UE and remote UEs on PC5 link are proposed.

公开(公告)号：US20200344616A1

公开(公告)日：2020-10-29

申请号：US16926864

申请日：2020-07-13

Applicant: MEDIATEK INC.

Inventor： Chien-Hwa Hwang ,  Chien-Chang Li ,  Yi-Ju Liao ,  Pei-Kai Liao ,  Weidong Yang

IPC: H04W16/28 ,  H04W72/04 ,  H04L5/00 ,  H04L1/18 ,  H04W74/08

Abstract: A new design for physical downlink control channel (PDCCH) is proposed for the next generation 5G new radio systems. A UE receives the configuration of a default control resource set (CORESET) in MIB/SIB from its serving base station. The default CORESET contains both common search space and UE-specific search space for candidate PDCCH transmission. A PDCCH in a default CORESET is mapped to physical resource in a distributed or localized manner. Specifically, various REG-to-CCE mapping rules are proposed to improve frequency diversity gain, or frequency selectivity gain, or to reduce latency of PDCCH processing. Further, to facilitate analog beamforming in mmWave systems, the default CORESET is transmitted in a synchronization signal (SS) block associated with a corresponding analog beam direction.