公开(公告)号：US20220239331A1

公开(公告)日：2022-07-28

申请号：US17717932

申请日：2022-04-11

Applicant: MediaTek Inc.

Inventor： Guo-Hau Gau ,  Ho-Chi Huang ,  Wei-Jen Chen ,  Chiou-Wei Tsai ,  Ju-Ya Chen ,  Mau-Lin Wu

IPC: H04B1/69 ,  H04W72/04 ,  H04L5/00

Abstract: Various novel concepts and schemes pertaining to non-orthogonal multiple access for wireless communications are described. A group orthogonal coded access (GOCA) scheme is introduced to reduce multi-user interference (MUI) and improve performance. A repetition division multiple access (RDMA) scheme is introduced to differentiate user equipment (UEs) by different repetition patterns. A low-density spreading (LDS) scheme is introduced to reduce MUI and improve performance.

公开(公告)号：US10567116B2

公开(公告)日：2020-02-18

申请号：US15995093

申请日：2018-05-31

Applicant: MediaTek Inc.

Inventor： Mao-Ching Chiu ,  Chong-You Lee ,  Timothy Perrin Fisher-Jeffes ,  Cheng-Yi Hsu ,  Yen-Shuo Chang ,  Wei-Jen Chen ,  Ju-Ya Chen

IPC: H04L1/00 ,  H03M13/11 ,  H04B7/0456 ,  H03M13/00

Abstract: A processor of an apparatus selects a codebook from a plurality of codebooks embedded in a quasi-cyclic-low-density parity-check (QC-LDPC) code. The processor stores the selected codebook in a memory associated with the processor. The processor also encodes data using the selected codebook to generate a plurality of modulation symbols of the data. The processor further controls a transmitter of the apparatus to multiplex, convert, filter, amplify and radiate the modulation symbols as electromagnetic waves through one or more antennas of the apparatus. In selecting the codebook from the plurality of codebooks embedded in the QC-LDPC code, the processor selects the codebook according to one or more rules such that a small codebook requiring a shorter amount of processing latency for the encoding is selected for the encoding unless a larger codebook corresponding to a larger amount of processing latency for the encoding is necessary for the encoding.

公开(公告)号：US10484013B2

公开(公告)日：2019-11-19

申请号：US16019947

申请日：2018-06-27

Applicant: MediaTek Inc.

Inventor： Chong-You Lee ,  Timothy Perrin Fisher-Jeffes ,  Mao-Ching Chiu ,  Wei-Jen Chen ,  Ju-Ya Chen

IPC: H03M13/11 ,  H03M13/03 ,  H03M13/00 ,  H04L1/00 ,  H04L1/18

Abstract: A processor of an apparatus establishes a wireless communication link with at least one other apparatus via a transceiver of the apparatus. The processor wirelessly communicates with the other apparatus via the wireless communication link by: selecting a first shift-coefficient table from a plurality of shift-coefficient tables; generating a QC-LDPC code using a base matrix and at least a portion of the first shift-coefficient table; selecting a codebook from a plurality of codebooks embedded in the QC-LDPC code; storing the selected codebook in a memory associated with the processor; encoding data using the selected codebook to generate a plurality of modulation symbols of the data; and controlling the transceiver to multiplex, convert, filter, amplify and radiate the modulation symbols as electromagnetic waves through one or more antennas of the apparatus to transmit the modulation symbols of the data to the other apparatus via the wireless communication link.

公开(公告)号：US20180198466A1

公开(公告)日：2018-07-12

申请号：US15862661

申请日：2018-01-05

Applicant: MediaTek Inc.

Inventor： Mao-Ching Chiu ,  Timothy Perrin Fisher-Jeffes ,  Chong-You Lee ,  Cheng-Yi Hsu ,  Yen-Shuo Chang ,  Wei-Jen Chen ,  Ju-Ya Chen

IPC: H03M13/11 ,  H03M13/00

Abstract: Concepts and schemes pertaining to shift coefficient and lifting factor design for NR LDPC code are described. A processor of an apparatus may generate a quasi-cyclic-low-density parity-check (QC-LDPC) code and encode data using the selected codebook. In generating the QC-LDPC code, the processor may define a plurality of sets of lifting factors, generate a respective table of shift values for each lifting factor of the plurality of sets of lifting factors, and generate the QC-LDPC code using a base matrix and the shift coefficient table.

公开(公告)号：US09980315B2

公开(公告)日：2018-05-22

申请号：US15145614

申请日：2016-05-03

Applicant: MediaTek Inc.

Inventor： Chia-Hao Yu ,  Ju-Ya Chen ,  Kuan-Lin Chen

IPC: H04W24/08 ,  H04W76/04 ,  H04L5/00 ,  H04W76/06

CPC classification number: H04W76/28 ,  H04L5/00 ,  H04L5/001 ,  H04W76/36

Abstract: A method deactivates secondary Component Carrier (CC) measurement in a communications apparatus providing wireless communications services via a first CC in a wireless network, wherein the communications apparatus includes a first signal processing component chain comprising a plurality of signal processing components and is configured for processing the RF signals for the first CC and a second signal processing component chain comprising a plurality of signal processing components. The method includes operations of determining a switch timing for turning on at least one of the signal processing components in the second signal processing component chain for performing a deactivated secondary CC measurement; performing the deactivated secondary CC measurement via the second signal processing component chain, wherein the secondary CC is not able to perform data transmission or reception during a deactivated state, and wherein the switch timing is determined according to a Discontinuous Reception (DRX) cycle.

公开(公告)号：US09866299B2

公开(公告)日：2018-01-09

申请号：US14725138

申请日：2015-05-29

Applicant: MEDIATEK INC.

Inventor： Jiann-Ching Guey ,  Chao-Cheng Su ,  Ju-Ya Chen

IPC: H04B7/06 ,  H04J11/00 ,  H04L5/00 ,  H04L27/26

CPC classification number: H04B7/0617 ,  H04J11/0079 ,  H04J2011/0096 ,  H04L5/0023 ,  H04L5/005 ,  H04L27/2607 ,  H04L27/2613 ,  H04L27/2628 ,  H04L27/2655

Abstract: A beamforming system synchronization architecture is proposed to allow a receiving device to synchronize to a transmitting device in time, frequency, and spatial domain in the most challenging situation with very high pathloss. A periodically configured time-frequency resource blocks in which the transmitting device uses the same beamforming weights for its control beam transmission to the receiving device. A pilot signal for each of the control beams is transmitted in each of the periodically configured time-frequency resource blocks. The same synchronization signal can be used for all stages of synchronization including initial coarse synchronization, device and beam identification, and channel estimation for data demodulation.

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：US09565140B2

公开(公告)日：2017-02-07

申请号：US14052619

申请日：2013-10-11

Applicant: MEDIATEK, INC.

Inventor： Chia-Hao Yu ,  Ju-Ya Chen ,  Yih-Shen Chen

IPC: H04W4/00 ,  H04L12/861 ,  H04L5/00 ,  H04L1/18

CPC classification number: H04L49/9005 ,  H04L1/1822 ,  H04L1/1874 ,  H04L5/001 ,  H04L5/0055

Abstract: A user equipment (UE) receives and decodes a first erroneous transport block (TB) from a base station in a mobile communication network. The UE allocates a first soft buffer having a first buffer size. The first soft buffer is associated with a first HARQ process for storing the first TB. The UE then receives and decodes a second erroneous TB from the base station. The UE allocates a second soft buffer having a second buffer size. The second soft buffer is associated with a second HARQ process for storing the second TB. The UE releases a portion of the first soft buffer to be allocated as part of the second soft buffer. The dynamic buffer allocation method reduces mismatch between rate matching and soft buffer storing when the total number of HARQ processes is small. In addition, more HARQ processes can be supported when the corresponding TB size is small.

Abstract translation: 用户设备（UE）从移动通信网络中的基站接收并解码第一错误传输块（TB）。 UE分配具有第一缓冲器大小的第一软缓冲器。 第一软缓冲器与用于存储第一TB的第一HARQ过程相关联。 然后，UE从基站接收并解码第二个错误TB。 UE分配具有第二缓冲器大小的第二软缓冲器。 第二软缓冲器与用于存储第二TB的第二HARQ进程相关联。 UE释放要作为第二软缓冲器的一部分分配的第一软缓冲器的一部分。 当HARQ进程的总数小时，动态缓冲器分配方法减少了速率匹配和软缓冲存储之间的不匹配。 另外，当对应的TB大小小时，可以支持更多的HARQ进程。

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：US09356744B2

公开(公告)日：2016-05-31

申请号：US14468526

申请日：2014-08-26

Applicant: MediaTek Inc.

Inventor： Chia-Hao Yu ,  Ju-Ya Chen ,  Kuan-Lin Chen

IPC: H04M3/00 ,  H04L5/00

CPC classification number: H04W76/28 ,  H04L5/00 ,  H04L5/001 ,  H04W76/36

Abstract: A method for deactivated secondary Component Carrier (CC) measurement in a communications apparatus providing wireless communications services via a first CC in a wireless network includes: determining a switch timing to perform bandwidth extension or frequency adjustment required for performing a deactivated secondary CC measurement; extending an operation bandwidth or adjusting a center frequency of at least one signal processing component included in the communications apparatus at the switch timing, wherein an operation band defined by the operation bandwidth and the center frequency of the signal processing component covers at least a bandwidth of the secondary CC; and performing the deactivated secondary CC measurement after extending the operation bandwidth or adjusting the center frequency. The secondary CC is not able to perform data transmission or reception during a deactivated state.

Abstract translation: 一种用于在无线网络中经由第一CC提供无线通信服务的通信设备中的停用的次要分量载波（CC）测量的方法包括：确定执行去激活的次级CC测量所需的带宽扩展或频率调整的切换定时; 在切换定时延长操作带宽或调整包含在通信装置中的至少一个信号处理部件的中心频率，其中由操作带宽定义的操作频带和信号处理部件的中心频率至少覆盖 次级CC; 并且在扩展操作带宽或调整中心频率之后执行停用的次级CC测量。 辅助CC不能在停用状态期间执行数据发送或接收。