公开(公告)号：US09831958B2

公开(公告)日：2017-11-28

申请号：US14981154

申请日：2015-12-28

Applicant: MEDIATEK INC.

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

IPC: H04W4/00 ,  H04B15/00 ,  H04L5/00 ,  H04L1/18 ,  H04W72/04

CPC classification number: H04B15/00 ,  H04L1/0041 ,  H04L1/0048 ,  H04L1/1812 ,  H04L1/1822 ,  H04L5/00 ,  H04L5/0037 ,  H04L5/0044 ,  H04W72/044

Abstract: When the codeword level interference cancellation (CW-IC) is used at the receiver in conjunction with the superposition coding scheme at the transmitter, in order to guarantee the success of signal reception, restrictions of scheduling decisions in resource allocation of superposed transport blocks may occur. A method to mitigate the scheduling restrictions is proposed. For a low-geometry UE in NOMA operation, one sub-band is used as the basic scheduling unit. As a result, data in resource blocks scheduled for NOMA operation and data in resource blocks scheduled for other non-NOMA operation correspond to different transport blocks. Therefore, a high-geometric UE only needs to decode the data scheduled for NOMA. The base station does not need to impose additional scheduling restrictions and signaling overhead.

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：US20170134109A1

公开(公告)日：2017-05-11

申请号：US15342275

申请日：2016-11-03

Applicant: MEDIATEK INC.

Inventor： Chien-Hwa Hwang ,  I-Kang Fu

IPC: H04J11/00 ,  H04L1/00 ,  H04B7/04

CPC classification number: H04J11/0033 ,  H04B7/0452 ,  H04L1/009 ,  H04L1/1874 ,  H04L1/1896 ,  H04L5/0007 ,  H04L5/0058

Abstract: A new air interface that is interference cancellation friendly is proposed. In one novel aspect, a base station uses one subband as the basic scheduling unit for each transport block if CWIC is configured, e.g., by static or semi-static signaling. By the use of proper bit selection and resource element mapping, the coded bits of a same code block are transmitted in the same subband. The transmission of a subband includes an integer multiple number of code blocks. As a result, only interfering code blocks at subbands co-scheduled with desired transport blocks are decoded and cancelled.

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：US20160192383A1

公开(公告)日：2016-06-30

申请号：US14980867

申请日：2015-12-28

Applicant: MEDIATEK INC.

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

IPC: H04W72/12 ,  H04W72/04 ,  H04L1/18

CPC classification number: H04L1/1812 ,  H04L1/0067 ,  H04L1/1822 ,  H04L1/1845 ,  H04L1/1896 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0053 ,  H04L5/0069 ,  H04L5/14 ,  H04W28/065 ,  H04W28/22 ,  H04W52/243 ,  H04W52/262 ,  H04W52/267 ,  H04W72/12 ,  H04W72/1252

Abstract: When the codeword level interference cancellation (CW-IC) is used at the receiver in conjunction with the superposition coding scheme at the transmitter, it is helpful if the soft buffer at the receiver is reserved not only for the desired transport blocks (TBs) but also for the interfering TBs handled by the CW-IC. In so doing, the soft channel bits of interfering TBs at multiple (re)transmissions can be combined to enhance the success rate of data decoding. A soft buffer partition method for the soft channel bits of the desired and interfering TBs in the superposition coding scheme is proposed. The proposed method has a full flexibility in adjusting the soft buffer sizes for the desired and interfering TBs.

Abstract translation: 当在发射机处结合重叠编码方案在接收机处使用码字电平干扰消除（CW-IC）时，如果在接收机处的软缓冲器不仅被保留在期望的传输块（TB），而且 也用于CW-IC处理的干扰性TB。 在这样做时，可以组合多个（重新）传输的干扰TB的软信道比特以提高数据解码的成功率。 提出了一种用于叠加编码方案中期望和干扰TB的软信道比特的软缓冲区分割方法。 所提出的方法在调整所需和干扰TB的软缓冲区大小方面具有完全的灵活性。

公开(公告)号：US09369245B2

公开(公告)日：2016-06-14

申请号：US14514715

申请日：2014-10-15

Applicant: MediaTek Inc.

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

IPC: H04W80/04 ,  H04W88/06 ,  H04W28/04 ,  H04W72/04 ,  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 obtains information regarding a Hybrid Automatic Repeat Request (HARQ) round trip time (RTT) in an HARQ process, arranging one or more almost blank sub-frame(s) in one or more frame(s) according to the HARQ RTT information and generating a sub-frame pattern describing the arrangement of the almost blank sub-frame(s), wherein the HARQ RTT is defined by the communications system. A transceiver module transmits at least a signal carrying information regarding the sub-frame pattern to a peer communications apparatus in the communications system. In addition, at least one almost blank sub-frame in the sub-frame pattern is arranged in a sub-frame for the peer communications apparatus to transmit an uplink grant message for granting an user equipment to transmit uplink data to the peer communications apparatus.

Abstract translation: 提供一种通信装置。 控制器模块在HARQ过程中获得关于混合自动重传请求（HARQ）往返时间（RTT）的信息，根据HARQ RTT在一个或多个帧中排列一个或多个几乎空白的子帧 信息，并生成描述几乎空白子帧的配置的子帧模式，其中HARQ RTT由通信系统定义。 收发器模块至少将携带关于子帧模式的信息的信号发送到通信系统中的对等通信装置。 此外，子帧模式中的至少一个几乎空白的子帧被布置在用于对等通信装置的子帧中，以发送用于授权用户设备向对等通信装置发送上行链路数据的上行链路许可消息。

公开(公告)号：US09060343B2

公开(公告)日：2015-06-16

申请号：US13629986

申请日：2012-09-28

Applicant: MEDIATEK, INC.

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

IPC: H04W64/00 ,  H04W72/12 ,  H04W72/04 ,  H04L5/00 ,  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.

Abstract translation: 提出了一种使用探空参考信号（SRS）进行网络定位的方法。 eNodeB为用户设备（UE）配置周期性SRS传输的多个参数。 eNodeB然后发送用于由位置测量单元（LMU）执行的SRS测量的SRS配置数据。 SRS配置数据包括小区特定的SRS带宽配置和UE特定的SRS带宽配置。 SRS配置数据还可以包括用于SRS传输的多个天线端口，SRS跳频带宽配置，是否启用SRS序列组跳变的信息，以及当启用SRS序列跳频时的“Dgr”; SS。 在接收到SRS配置数据之后，LMU能够对来自UE的接收的SRS信号执行定时测量。 在一个实施例中，LMU检测到SRS丢弃，以避免基于网络的定位的性能下降。

公开(公告)号：US20140146696A1

公开(公告)日：2014-05-29

申请号：US14089334

申请日：2013-11-25

Applicant: MEDIATEK, INC.

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

IPC: H04W24/08 ,  H04L5/14

CPC classification number: H04L5/14 ,  H04L5/005 ,  H04L5/0053 ,  H04L5/0094 ,  H04L5/1469 ,  H04L47/762 ,  H04W72/04 ,  H04W72/044 ,  H04W72/0446 ,  H04W72/12 ,  H04W72/1205 ,  H04W72/1252

Abstract: Methods for UE measurement enhancement in an adaptive TDD configuration network are proposed. In a first solution, the network provides an adaptive TDD indicator to the UE. In a second solution, the network provides an instantaneous TDD configuration to the UE. In a third solution, multiple TDD configurations are grouped as one TDD group, and the network adapts TDD configurations within the same TDD group. In a fourth solution, the network broadcasts a TDD reference configuration in SIB1, and adapts to another TDD configuration with DL super set constraint, i.e., the DL subframes of the other TDD configuration form a super set of the DL subframes of the broadcasted TDD reference configuration.

Abstract translation: 提出了自适应TDD配置网络中UE测量增强的方法。 在第一种解决方案中，网络向UE提供自适应TDD指示符。 在第二种解决方案中，网络向UE提供瞬时TDD配置。 在第三种解决方案中，多个TDD配置被分组为一个TDD组，并且网络适应同一TDD组内的TDD配置。 在第四种解决方案中，网络在SIB1中广播TDD参考配置，并且适应具有DL超级约束的另一TDD配置，即，另一TDD配置的DL子帧形成广播的TDD参考的DL子帧的超集 组态。

公开(公告)号：US20130114454A1

公开(公告)日：2013-05-09

申请号：US13670394

申请日：2012-11-06

Applicant: Mediatek, Inc.

Inventor： Chien-Hwa Hwang ,  Meng-Ying Tsai ,  Per Johan Mikael Johansson

IPC: H04W24/02

CPC classification number: B65G51/00 ,  B05C11/1042 ,  B05C11/1047 ,  H04W24/02 ,  H04W24/08 ,  H04W24/10

Abstract: A method of using additional uplink measurements for MDT UL coverage is provided. A base station (eNodeB) establishes a radio resource control (RRC) connection with a user equipment (UE) in a mobile communication network. The eNodeB and the UE are configured for Minimization of Drive Test (MDT). The eNodeB receives a Power Headroom Report (PRH) corresponds to a Physical Uplink Shared Channel (PUSCH) from the UE, and forwards the PHR to an MDT server. The eNodeB performs uplink measurement of a Demodulation Reference Signal (DM-RS) allocated in the PUSCH. The uplink measurement also involves measuring an uplink Received Interference Power (RIP) associated with the PUSCH. The eNodeB then reports uplink measurement results to the MDT server. The MDT server is able to determine uplink coverage based on the PHR and the uplink measurement results.

Abstract translation: 提供了一种使用额外的上行链路测量用于MDT UL覆盖的方法。 基站（eNodeB）在移动通信网络中建立与用户设备（UE）的无线电资源控制（RRC）连接。 eNodeB和UE配置为最小化驱动测试（MDT）。 eNodeB从UE接收对应于物理上行链路共享信道（PUSCH）的功率余量报告（PRH），并将PHR转发到MDT服务器。 eNodeB执行在PUSCH中分配的解调参考信号（DM-RS）的上行链路测量。 上行链路测量还涉及测量与PUSCH相关联的上行接收干扰功率（RIP）。 eNodeB然后将上行链路测量结果报告给MDT服务器。 MDT服务器能够基于PHR和上行链路测量结果确定上行链路覆盖。

公开(公告)号：US20230170959A1

公开(公告)日：2023-06-01

申请号：US17978921

申请日：2022-11-01

Applicant: MEDIATEK INC.

Inventor： Chien-Hwa Hwang

IPC: H04B7/06 ,  H04B7/01 ,  H04L5/00

CPC classification number: H04B7/0617 ,  H04B7/01 ,  H04L5/0051

Abstract: Method and apparatus are provided for hybrid beamforming with autonomous beamformers in mobile communications. An apparatus can receive a plurality of input signals from a network node by a plurality of antennas. The apparatus can perform autonomous beamforming by adjusting phases of the plurality of input signals to generate autonomous beamformed signals. The apparatus can perform at least one of digital beamforming and analog beamforming on the autonomous beamformed signals based on a reference signal from the network node to generate a beamformed signal.