公开(公告)号：US10958290B2

公开(公告)日：2021-03-23

申请号：US16543783

申请日：2019-08-19

Applicant: MediaTek Inc.

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

IPC: H03M13/00 ,  H03M13/27 ,  H03M13/29 ,  H03M13/11

Abstract: Concepts and schemes pertaining to location of interleaver with low-density parity-check (LDPC) code are described. A processor of an apparatus encodes data to provide a stream of encoded data. The processor also rate matches the encoded data to provide a rate-matched stream of encoded data. The processor further interleaving the rate-matched stream of encoded data. In rate matching the encoded data, the processor buffers the stream of encoded data in a circular buffer, with the circular buffer functioning as a rate matching block that rate matches the stream of encoded data. In interleaving the rate-matched stream of encoded data, the processor performs bit-level interleaving on the rate-matched stream of encoded data to provide a stream of interleaved data.

公开(公告)号：US10727897B2

公开(公告)日：2020-07-28

申请号：US15674498

申请日：2017-08-10

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：US20180331698A1

公开(公告)日：2018-11-15

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

CPC classification number: H03M13/1168 ,  H03M13/033 ,  H03M13/036 ,  H03M13/116 ,  H03M13/616 ,  H03M13/6306 ,  H03M13/6362 ,  H03M13/6508 ,  H03M13/6516 ,  H04L1/0041 ,  H04L1/0057 ,  H04L1/0068 ,  H04L1/1819

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：US20180212626A1

公开(公告)日：2018-07-26

申请号：US15878350

申请日：2018-01-23

Applicant: MediaTek Inc.

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

IPC: H03M13/27 ,  H03M13/11 ,  H03M13/29 ,  H03M13/00

Abstract: Concepts and schemes pertaining to location of interleaver with low-density parity-check (LDPC) code are described. A processor of an apparatus encodes data to provide a stream of encoded data. The processor also rate matches the encoded data to provide a rate-matched stream of encoded data. The processor further interleaving the rate-matched stream of encoded data. In rate matching the encoded data, the processor buffers the stream of encoded data in a circular buffer, with the circular buffer functioning as a rate matching block that rate matches the stream of encoded data. In interleaving the rate-matched stream of encoded data, the processor performs bit-level interleaving on the rate-matched stream of encoded data to provide a stream of interleaved data.

公开(公告)号：US20180167171A1

公开(公告)日：2018-06-14

申请号：US15834325

申请日：2017-12-07

Applicant: MEDIATEK INC.

Inventor： Kuo-Ming Wu ,  Wei-Jen Chen ,  Abdelkader Medles ,  Tao Chen ,  Ho-Chi Huang ,  Ju-Ya Chen

IPC: H04L1/18 ,  H04W74/02 ,  H04W72/12

Abstract: A Hybrid Automatic Repeat Request (HARQ) feedback scheme that employs a multi-state NACK feedback processing is proposed. A transport block (TB) contains a plurality of code blocks (CBs). When all CBs of the TB are successfully decoded, a one-bit TB ACK is feedback. When at least one CB of the TB is not correctly decoded, a one-bit TB NACK is feedback. In addition, a multi-bit HARQ CB NACK feedback is provided. The multi-bit HARQ CB NACK can point more precisely to the erroneous parts of the TB and trigger efficient retransmission by skipping retransmission of successfully decoded CBs. The network can disable the multi-bit CB NACK for certain UEs, e.g., to reduce overhead. The UE can disable the multi-bit CB NACK, e.g., to save power.

公开(公告)号：US20180070302A1

公开(公告)日：2018-03-08

申请号：US15697423

申请日：2017-09-06

Applicant: MediaTek Inc.

Inventor： Wei-De Wu ,  Pei-Kai Liao ,  Hsuan-Li Lin ,  Shiang-Jiun Lin ,  Wei-Jen Chen ,  Li-Chuan Tseng

IPC: H04W52/02 ,  H04L5/00

CPC classification number: H04W52/028 ,  H04L5/001 ,  H04L5/0039 ,  H04L5/005 ,  H04L5/0051 ,  H04L5/0055 ,  H04W52/0216 ,  H04W52/0219 ,  H04W52/0229 ,  Y02D70/00 ,  Y02D70/10 ,  Y02D70/12 ,  Y02D70/126 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/166 ,  Y02D70/23 ,  Y02D70/24 ,  Y02D70/26

Abstract: Concepts and examples pertaining to efficient coding switching and modem resource utilization in wireless communication systems are described. A processor of a modem of a user equipment (UE), configured with at least a first-capacity decoder and at least a second-capacity decoder, receives a common virtual carrier (CVC), a dedicated virtual carrier (DVC), or both. The CVC contains common information shared by multiple UEs, control information for the UE, and/or data information related to first data destined for the UE. The DVC contains control information for the UE, the first data, or a combination thereof. The first-capacity decoder decodes data of a small size up to a low data rate. The second-capacity decoder decodes data of a large size up to a high data rate. The processor determines whether to decode the first data using the first-capacity decoder or the second-capacity decoder based on the data information in the CVC.

公开(公告)号：US20170250712A1

公开(公告)日：2017-08-31

申请号：US15594239

申请日：2017-05-12

Applicant: MediaTek Inc.

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

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

CPC classification number: H03M13/1168 ,  H03M13/033 ,  H03M13/116 ,  H03M13/616 ,  H03M13/6306 ,  H03M13/6516 ,  H04L1/0057 ,  H04L1/0068 ,  H04L1/1819

Abstract: Concepts and schemes pertaining to quasi-cyclic-low-density parity-check (QC-LDPC) coding are described. A processor of an apparatus may generate a QC-LDPC code having a plurality of codebooks embedded therein. The processor may select a codebook from the plurality of codebooks. The processor may also encode data using the selected codebook. Alternatively or additionally, the processor may generate the QC-LDPC code including at least one quasi-row orthogonal layer. Alternatively or additionally, the processor may generate the QC-LDPC code including a base matrix a portion of which forming a kernel matrix that corresponds to a code rate of at least a threshold value

公开(公告)号：US09591599B2

公开(公告)日：2017-03-07

申请号：US14546175

申请日：2014-11-18

Applicant: MediaTek Inc.

Inventor： Wei-Jen Chen ,  Jianxuan Du ,  Yen-Hui Yeh ,  Wei-Nan Sun

IPC: H04W56/00 ,  H04W52/02

CPC classification number: H04W56/004 ,  H04W52/0212 ,  H04W52/0216 ,  H04W52/0229 ,  H04W56/001 ,  H04W72/042 ,  Y02D70/00 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/164 ,  Y02D70/24

Abstract: A mobile communication device with a Radio Frequency (RF) unit and a processing unit is provided. The RF unit transmits and receives wireless signals to and from a service network. The processing unit configures the RF unit to communicate with the service network in a DRX operation, and uses a Physical Broadcast Channel (PBCH) for synchronizing with the service network during the DRX operation.

Abstract translation: 提供具有射频（RF）单元和处理单元的移动通信设备。 RF单元向服务网络发送无线信号并从服务网络接收无线信号。 处理单元将RF单元配置为在DRX操作中与服务网络通信，并且在DRX操作期间使用物理广播信道（PBCH）来与服务网络同步。

公开(公告)号：US20140226764A1

公开(公告)日：2014-08-14

申请号：US13762387

申请日：2013-02-08

Applicant: MEDIATEK INC.

Inventor： Wei-Jen Chen ,  Chia-Yu Chang ,  Po-Ying Chen

IPC: H04B1/10

CPC classification number: H04B1/1081 ,  H04J11/0063 ,  H04L25/0224 ,  H04L25/03171 ,  H04L25/03178 ,  H04L25/03292 ,  H04L25/03318

Abstract: A method for performing wireless communications and an associated apparatus are provided, where the method is applied to an electronic device. The method includes the steps of: receiving at least one data stream, wherein each data stream from the at least one data stream is transmitted from a wireless channel; in a first iteration, utilizing a Maximum Likelihood (ML) estimator to perform demapping processing on at least one portion of the at least one data stream to obtain Log-Likelihood Ratios (LLRs) of the first iteration and performing Turbo decoding according to the LLRs of the first iteration to generate resultant LLRs of the first Iteration; and in at least one following iteration, utilizing a Max A Posterior (MAP) estimator to perform demapping processing on at least one portion of the at least one data stream and performing Turbo decoding, successively, in order to cancel interference due to the wireless channel.

Abstract translation: 提供了一种用于执行无线通信的方法和相关联的设备，其中该方法被应用于电子设备。 该方法包括以下步骤：接收至少一个数据流，其中从无线信道发送来自所述至少一个数据流的每个数据流; 在第一迭代中，利用最大似然（ML）估计器对至少一个数据流的至少一部分执行解映射处理，以获得第一迭代的对数似然比（LLR），并根据LLR进行Turbo解码 的第一次迭代以产生第一迭代的合成LLR; 并且在至少一个后续迭代中，利用最大后验（MAP）估计器对所述至少一个数据流的至少一部分执行解映射处理并且连续执行Turbo解码，以便消除由于所述无线信道造成的干扰 。

公开(公告)号：US12224836B2

公开(公告)日：2025-02-11

申请号：US18083643

申请日：2022-12-19

Applicant: MEDIATEK INC.

Inventor： Chong-You Lee ,  Jiaxian Pan ,  Yabo Li ,  Wei-Jen Chen ,  Wei-Hsuan Hsieh ,  Feng Chiu ,  Da-chun Hsing ,  Sung-Chiao Li

IPC: H04B7/06

Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a device. The device applies Nso sensing beam vectors to Nso received signals at Nant antennas to obtain Nso measurements, respectively, Nso and Nant each being an integer greater than or equal to 1. The device determines a beam vector based on the Nso measurements and the Nso sensing beam vectors.