公开(公告)号：US12184377B2

公开(公告)日：2024-12-31

申请号：US18147732

申请日：2022-12-29

Applicant: MEDIATEK Inc.

Inventor： Da-Chun Hsing ,  Wei-Yao Chen ,  Nien-En Wu ,  Chih-Wei Chen ,  Yabo Li ,  Jiaxian Pan ,  Chong-You Lee ,  Wei-Jen Chen ,  Chih-Yuan Lin ,  Jianwei Zhang

IPC: H04B7/0413 ,  H04B7/06

Abstract: The invention provides a method for antenna selectin of a user equipment (UE). The UE may comprise a plurality of antennas. The method may comprise calculating one or more quality evaluations respectively associated with one or more first antenna subsets, and selecting one of the one or more first antenna subsets according to the one or more quality evaluations. Each antenna subset may include one or more of the plurality of antennas. Each quality evaluation may be calculated under a condition that the antenna(s) included in the associated antenna subset is (are) used to communicate.

公开(公告)号：US20200225913A1

公开(公告)日：2020-07-16

申请号：US16731527

申请日：2019-12-31

Applicant: MediaTek Inc.

Inventor： Yen-Yu Chen ,  Wei-Jen Chen ,  Yu Chia Chen

IPC: G06F7/556 ,  G06F7/483 ,  G06F9/30 ,  G06F7/548

Abstract: A system includes an accelerator to accelerate the computations of nonlinear math functions. The accelerator includes a set of first evaluators and a set of second evaluators. Each of the first evaluators and the second evaluators is a fixed-function hardware circuit specialized for evaluating a respective nonlinear function. The system further includes a processor which decodes a math instruction in an instruction set, sends to the accelerator a signal identifying a nonlinear function corresponding to the math instruction, and receives an output of the nonlinear function from the accelerator. According to the signal, the accelerator evaluates the nonlinear function using one of the first evaluators. When the signal identifies the nonlinear function as a composite function, the accelerator additionally uses one of second evaluators on an output of the one first evaluator.

公开(公告)号：US10581457B2

公开(公告)日：2020-03-03

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：US10164659B2

公开(公告)日：2018-12-25

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

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：US20180198555A1

公开(公告)日：2018-07-12

申请号：US15863978

申请日：2018-01-08

Applicant: MEDIATEK INC.

Inventor： Wei-De Wu ,  Chia-Wei Tai ,  Tao Chen ,  Yen-Cheng Liu ,  Xiu-Sheng Li ,  Wei-Jen Chen

IPC: H04L1/00

Abstract: A method of new radio physical broadcast channel (NR-PBCH) bit mapping is proposed to improve for NR-PBCH decoding performance under Polar codes. NR-PBCH carries 32 information bits and 24 CRC bits. Specifically, NR-PBCH uses 512-bit Polar codes to carry total 56 data bits. Different Polar code bit channels have different channel reliability. As a general rule, the most reliable Polar code bit channels are used for the 56 data bits. In accordance with a novel aspect, within the 32 NR-PBCH information bits, some of the information bits that can be known to the decoders under certain conditions and therefore are placed at the least reliable Polar code bit positions. As a result, by mapping the NR-PBCH data bits properly at the input bit positions of Polar codes, the NR-PBCH decoding performance is improved when the known bits a priori can be exploited.

公开(公告)号：US20180131392A1

公开(公告)日：2018-05-10

申请号：US15802265

申请日：2017-11-02

Applicant: MediaTek Inc.

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

IPC: H03M13/25 ,  H03M13/27 ,  H04L1/00

CPC classification number: H03M13/255 ,  H03M13/116 ,  H03M13/27 ,  H03M13/2742 ,  H03M13/6306 ,  H04L1/0041 ,  H04L1/0071

Abstract: Concepts and schemes pertaining to information coding for mobile communications are described. A processor of an apparatus encodes data to provide encoded data. The processor also transmits the encoded data to a network node of a wireless network. In encoding the data, the processor encodes the data with a low-density parity-check (LDPC) code to provide LDPC-coded data. Moreover, the processor processes the LDPC-coded data with a forward error correction (FEC) robustness enhancement function to provide the encoded data. The FEC robustness enhancement function includes an interleaving function that interleaves the LDPC-coded data to provide the encoded data, an interlacing function that interlaces the LDPC-coded data to provide the encoded data, or a bit-reordering function that reorders bits of the LDPC-coded data to provide the encoded data.

公开(公告)号：US20170332396A1

公开(公告)日：2017-11-16

申请号：US15593324

申请日：2017-05-12

Applicant: MEDIATEK INC.

Inventor： Pei-Kai Liao ,  Xiu-Sheng Li ,  Wei-Jen Chen

IPC: H04W72/12 ,  H04L27/26 ,  H04W72/04 ,  H04L5/14

Abstract: A unified frame structure is scalable to meet the 5G new radio requirements, to support flexible TDD configurations, to support multiple numerologies, and to adapt to the channel properties of different spectrums up to 100 GHz. Multiple numerologies with 15 KHz subcarrier spacing and its integer or 2m multiple are proposed, where m is a positive integer. Under the unified frame structure, each radio frame is a basic operation time unit in higher layer and comprises a plurality of slots, and each slot within a radio frame is a basic scheduling time unit in physical layer and comprises a predefined number of OFDM symbols. A semi-static configuration configures DL-only slot type via system information or higher-layer signaling, while a physical layer signaling is used to dynamically configure flexible slot types.

公开(公告)号：US20170180519A1

公开(公告)日：2017-06-22

申请号：US15450006

申请日：2017-03-05

Applicant: MEDIATEK INC.

Inventor： Chi-Feng Lin ,  Wei-Jen Chen

IPC: H04L29/08 ,  H04L12/40 ,  H04L12/863 ,  H04L12/811

CPC classification number: H04L69/324 ,  H04L12/40 ,  H04L47/38 ,  H04L47/6245

Abstract: A method used in a network device for outputting data to a bus with a data bus width at each cycle includes: using a packet generating circuit for generating idle data after an end of packet for a packet at a cycle and generating a start of packet for a next packet at a different cycle; and using an inter-packet gap (IPG) generating circuit for receiving data transmitted from the packet generating circuit, dynamically writing the received data into the buffer, and inserting a gap of idle data between the end of packet and the start of packet according to the end of packet and the idle data generated by the packet generating circuit.

公开(公告)号：US09628396B2

公开(公告)日：2017-04-18

申请号：US14258021

申请日：2014-04-22

Applicant: MEDIATEK INC.

Inventor： Chi-Feng Lin ,  Wei-Jen Chen

IPC: H04L12/701 ,  H04L12/811

CPC classification number: H04L69/324 ,  H04L12/40 ,  H04L47/38 ,  H04L47/6245

Abstract: A method used in a network device for outputting data to a bus with a data bus width at each cycle includes: using a packet generator for generating idle data after an end of packet for a packet at a cycle and generating a start of packet for a next packet at a different cycle; and using an inter-packet gap (IPG) generator for receiving data transmitted from the packet generator, dynamically writing the received data into the buffer, and inserting a gap of idle data between the end of packet and the start of packet according to the end of packet and the idle data generated by the packet generator.

公开(公告)号：US09172413B2

公开(公告)日：2015-10-27

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 。