公开(公告)号：US20180227942A1

公开(公告)日：2018-08-09

申请号：US15888243

申请日：2018-02-05

Applicant: Mediatek Inc.

Inventor： Chien Hwa Hwang ,  Wei-De Wu ,  Pei-Kai Liao ,  Weidong Yang ,  Chia-Wei Tai ,  Shou-Tung Tsai

IPC: H04W72/12 ,  H04L1/00

CPC classification number: H04W72/042 ,  H04L1/0045 ,  H04L1/0061 ,  H04L1/0072 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0048 ,  H04L5/0055 ,  H04W72/1289 ,  H04W88/08

Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a base station. The base station generates a plurality of sets of bits representing downlink control information directed to a plurality of UEs. The each set of bits of the plurality of sets of bits includes a number of information bits and a number of protection bits. The base station also combines the plurality of sets of bits to generate combined bits. The base station further encodes the combined bits to generate encoded bits. The base station subsequently transmits the encoded bits.

公开(公告)号：US20180198585A1

公开(公告)日：2018-07-12

申请号：US15864838

申请日：2018-01-08

Applicant: MEDIATEK INC.

Inventor： Hsuan-Li LIN ,  Pei-Kai Liao ,  Chien-Chang Li

IPC: H04L5/00 ,  H04W24/10

Abstract: Aspects of the disclosure provide a method for transmission of downlink mobile reference signals (MRSs). The method can include transmitting an MRS that includes a first part MRS and an additional part MRS, wherein the first part MRS includes first MRS bursts each multiplexed with a synchronization signal block (SS block), and the additional part MRS includes second MRS bursts and is configurable to be transmitted or not transmitted.

公开(公告)号：US09979522B2

公开(公告)日：2018-05-22

申请号：US15281030

申请日：2016-09-29

Applicant: MEDIATEK INC.

Inventor： Chien-Chang Li ,  Weidong Yang ,  Pei-Kai Liao ,  Bo-Si Chen

IPC: H04W48/16 ,  H04W72/04 ,  H04W28/26 ,  H04L5/00 ,  H04W88/02

CPC classification number: H04L5/0048 ,  H04W48/16 ,  H04W72/042 ,  H04W72/0446 ,  H04W88/02

Abstract: Methods and apparatus are provided for multiplexing DRS within a transmission burst for opportunistic spectrum access. In one novel aspect, DRS is not transmitted in a fractional subframe within a TXOP. In one embodiment, if the starting fractional subframe, which contains initial signal, occurs in a configured DMTC, DRS is transmitted in the first subframe next to the starting fractional subframe. In another embodiment, if DMTC starts from a complete subframe within a TXOP, DRS is transmitted in the first candidate position within a DMTC. In another novel aspect, in the DRS subframe, PDSCH is allocated in the PRBs outside the central PRBs (six or twenty-five PRBs). In one embodiment, the reservation signal can be used to satisfy the requirement of occupied bandwidth and continuity transmission. In another embodiment, the free REs in central PRBs carry the system information when required on the unlicensed band.

公开(公告)号：US20170289971A1

公开(公告)日：2017-10-05

申请号：US15475950

申请日：2017-03-31

Applicant: MEDIATEK INC.

Inventor： Wei-De WU ,  Pei-Kai Liao ,  Chien-Hwa Hwang

IPC: H04W72/04

CPC classification number: H04L1/1671 ,  H04L1/0045 ,  H04L1/1614 ,  H04L1/1621 ,  H04L1/1845 ,  H04L5/0053 ,  H04L5/0055 ,  H04L5/0094 ,  H04L27/2647 ,  H04L27/2649 ,  H04W72/042 ,  H04W72/0453

Abstract: Aspects of the disclosure provide an apparatus that includes a receiving circuit and a baseband processing circuit. The receiving circuit is configured to receive signals transmitted from another apparatus to the apparatus and generate digital samples in response to the received signals. The received signals have a plurality of frequency sub-bands allocated as transmission resources. A specific frequency sub-band is allocated to the apparatus to carry data and control information to the apparatus. The baseband processing circuit is configured to receive the digital samples, process the digital samples to generate symbols in the respective frequency sub-bands, and decode the symbols in the respective frequency sub-bands to determine the specific frequency sub-band that is allocated to the apparatus.

公开(公告)号：US20170118055A1

公开(公告)日：2017-04-27

申请号：US15299116

申请日：2016-10-20

Applicant: MEDIATEK INC.

Inventor： Jiann-Ching Guey ,  Chun-Hsuan Kuo ,  Pei-Kai Liao

IPC: H04L27/26 ,  H04L1/00 ,  H04W72/04 ,  H04L5/00

CPC classification number: H04L27/2607 ,  H04J11/0046 ,  H04L1/0003 ,  H04L1/0005 ,  H04L1/0006 ,  H04L1/0009 ,  H04L1/0042 ,  H04L1/0084 ,  H04L5/0044 ,  H04L5/0073 ,  H04L5/0094 ,  H04L25/03821 ,  H04L27/2602 ,  H04W72/042

Abstract: A flexible time-frequency grid is proposed. A baseline OFDM format consisting of CP and a following symbol interval is scaled in time to generate a set of extended OFDM frame formats. The set of extended OFDM frame formats is further extended by scaling in bandwidth. The OFDM frame formats and the extended OFDM frame format set are used dynamically in the wireless communication system in accordance to the changes of the communication environment. Furthermore, various methods are proposed to avoid and/or combat performance degradation of the resource elements (REs) interfered by non-orthogonal REs in the neighborhood due to different OFDM symbol configurations in the flexible time-frequency grid.

公开(公告)号：US20170055293A1

公开(公告)日：2017-02-23

申请号：US15238610

申请日：2016-08-16

Applicant: MEDIATEK INC.

Inventor： Weidong Yang ,  Chien-Chang Li ,  Pei-Kai Liao ,  Bo-Si Chen

IPC: H04W74/08 ,  H04L12/851

CPC classification number: H04L47/24 ,  H04L5/0035 ,  H04W74/002

Abstract: A method of distributed control achieving fair radio resource access is proposed. The parameters used in a listen-before-talk (LBT) channel access procedure that are used to control how aggressively a node contends for channel access can be called as “Channel Access Transmission Parameters” or CAT parameters. The proposed method uses randomized CAT parameters for each traffic type, and then obtains prioritized access for some nodes at any given time and fair access averaged over a period of time. More specifically, a transmitting node can use more than one set of CAT parameters even for the same traffic type instead of conventional only use one set of CAT parameters for one traffic type. The transmitting node can use a set of CAT parameters according to a fixed schedule, a random rule, or a pseudo-random rule.

Abstract translation: 提出了一种实现公平无线电资源访问的分布式控制方法。 在用于控制节点竞争通道接入的积极性的用于听即演（LBT）通道访问过程中使用的参数可被称为“通道访问传输参数”或CAT参数。 所提出的方法针对每个流量类型使用随机CAT参数，然后在任何给定时间获得一些节点的优先级访问，并在一段时间内平均访问。 更具体地，即使对于相同的业务类型，发送节点也可以使用多于一组的CAT参数集，而不是传统的仅为一种业务类型使用一组CAT参数。 发送节点可以根据固定的时间表，随机规则或伪随机规则使用一组CAT参数。

公开(公告)号：US20160353421A1

公开(公告)日：2016-12-01

申请号：US15233099

申请日：2016-08-10

Applicant: MEDIATEK INC.

Inventor： Pei-Kai Liao ,  Xiangyang Zhuang

IPC: H04W72/04 ,  H04L5/00

CPC classification number: H04W72/042 ,  H04L5/0007 ,  H04L5/0053 ,  H04L5/0092 ,  H04W48/12

Abstract: A method to allocate physical radio resources for both distributed and localized transmission schemes of ePDCCH and configure common and UE-specific search space for UE is provided. In one embodiment, a UE receives a first high-layer information to determine a first set of PRBs. The UE determines a first set of candidate ePDCCHs within the first set of PRBs, wherein one or more candidate ePDCCHs potentially carries DCI intended for the UE. The UE then decodes the first set of candidate ePDCCHs to obtain the DCI intended for the UE. Similar steps are performed for a second set of candidate ePDCCHs potentially carrying DCI intended for the UE. The allocated radio resources of the candidate ePDCCHs may be distributed or localized and constitute either common or UE-specific search space. Blind decoding complexity is reduced.

Abstract translation: 提供了一种为ePDCCH的分布式和局部化传输方案分配物理无线电资源并为UE配置公共和UE特定搜索空间的方法。 在一个实施例中，UE接收第一高层信息以确定第一组PRB。 UE确定第一组PRB内的第一组候选ePDCCH，其中一个或多个候选ePDCCH潜在地携带用于UE的DCI。 然后，UE对第一组候选ePDCCH进行解码，以获得预定用于UE的DCI。 对可能承载用于UE的DCI的第二组候选ePDCCH执行类似的步骤。 候选ePDCCH的分配的无线电资源可以被分布或本地化，并且构成公共或特定于UE的搜索空间。 盲目的解码复杂度降低。

公开(公告)号：US20160337018A1

公开(公告)日：2016-11-17

申请号：US15150991

申请日：2016-05-10

Applicant: MEDIATEK INC.

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

IPC: H04B7/04 ,  H04W72/04 ,  H04L5/00

CPC classification number: H04B7/0452 ,  H04B7/0426 ,  H04J11/004 ,  H04J15/00 ,  H04L5/003 ,  H04L5/0051 ,  H04L25/0206 ,  H04W52/143 ,  H04W52/325 ,  H04W52/346

Abstract: A method of performing downlink multiuser superposition transmission (MUST) when different precoders are applied to superposed signals is proposed. For demodulation reference signal (DM-RS) transmission mode, the near-user can estimate the far-user's channel by means of separate DM-RS symbols. For common reference signal (CRS) transmission mode, the near-user can blindly detect code far-user's precoder that is not signaled to the near-user. As a result, even the downlink control information (DCI) format is designed for the situation using the same precoder for superposed signals, the MUST scheme works and the near-user receiver can separate the superposed signal for the far-user.

Abstract translation: 提出了当对叠加的信号应用不同的预编码器时执行下行链路多用户叠加传输（MUST）的方法。 对于解调参考信号（DM-RS）传输模式，近用户可以通过单独的DM-RS符号估计远用户的信道。 对于公共参考信号（CRS）传输模式，近用户可以盲目检测未向近邻用户发送信号的远程用户预编码器。 结果，即使对于叠加信号使用相同的预编码器的情况也设计了下行链路控制信息（DCI）格式，所以MUST方案工作，并且近用户接收机可以分离用于远用户的叠加信号。

公开(公告)号：US09445409B2

公开(公告)日：2016-09-13

申请号：US13847619

申请日：2013-03-20

Applicant: MEDIATEK, INC.

Inventor： Pei-Kai Liao ,  Xiangyang Zhuang

IPC: H04W72/04 ,  H04W48/12 ,  H04L5/00

CPC classification number: H04W72/042 ,  H04L5/0007 ,  H04L5/0053 ,  H04L5/0092 ,  H04W48/12

Abstract: A method to allocate physical radio resources for both distributed and localized transmission schemes of ePDCCH and configure common and UE-specific search space for UE is provided. In one embodiment, a UE receives a first high-layer information to determine a first set of PRBs. The UE determines a first set of candidate ePDCCHs within the first set of PRBs, wherein one or more candidate ePDCCHs potentially carries DCI intended for the UE. The UE then decodes the first set of candidate ePDCCHs to obtain the DCI intended for the UE. Similar steps are performed for a second set of candidate ePDCCHs potentially carrying DCI intended for the UE. The allocated radio resources of the candidate ePDCCHs may be distributed or localized and constitute either common or UE-specific search space. Blind decoding complexity is reduced.

Abstract translation: 提供了一种为ePDCCH的分布式和局部化传输方案分配物理无线电资源并为UE配置公共和UE特定搜索空间的方法。 在一个实施例中，UE接收第一高层信息以确定第一组PRB。 UE确定第一组PRB内的第一组候选ePDCCH，其中一个或多个候选ePDCCH潜在地携带用于UE的DCI。 然后，UE对第一组候选ePDCCH进行解码，以获得预定用于UE的DCI。 对可能承载用于UE的DCI的第二组候选ePDCCH执行类似的步骤。 候选ePDCCH的分配的无线电资源可以被分布或本地化，并且构成公共或特定于UE的搜索空间。 盲目的解码复杂度降低。

公开(公告)号：US09258809B2

公开(公告)日：2016-02-09

申请号：US13848987

申请日：2013-03-22

Applicant: MEDIATEK, INC.

Inventor： Pei-Kai Liao ,  Yih-Shen Chen

IPC: H04W72/04 ,  H04W36/08 ,  H04L5/00 ,  H04W72/12

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。