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公开(公告)号：US10757581B2
公开(公告)日：2020-08-25
申请号：US15927226
申请日：2018-03-21
Applicant: MEDIATEK INC.
Inventor： Chien-Hwa Hwang , Chien-Chang Li , Yi-Ju Liao , Pei-Kai Liao , Weidong Yang
Abstract: A new design for physical downlink control channel (PDCCH) is proposed for the next generation 5G new radio systems. A UE receives the configuration of a default control resource set (CORESET) in MIB/SIB from its serving base station. The default CORESET contains both common search space and UE-specific search space for candidate PDCCH transmission. A PDCCH in a default CORESET is mapped to physical resource in a distributed or localized manner. Specifically, various REG-to-CCE mapping rules are proposed to improve frequency diversity gain, or frequency selectivity gain, or to reduce latency of PDCCH processing. Further, to facilitate analog beamforming in mmWave systems, the default CORESET is transmitted in a synchronization signal (SS) block associated with a corresponding analog beam direction.
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公开(公告)号：US10666397B2
公开(公告)日：2020-05-26
申请号：US15475950
申请日：2017-03-31
Applicant: MEDIATEK INC.
Inventor： Wei-De Wu , Pei-Kai Liao , Chien-Hwa Hwang
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.
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公开(公告)号：US10440703B2
公开(公告)日：2019-10-08
申请号：US15865229
申请日：2018-01-08
Applicant: MEDIATEK INC.
Inventor： Chien-Hwa Hwang , Weidong Yang , Pei-Kai Liao , Wei-De Wu
Abstract: A method to improve the design of new radio physical downlink control channel (NR-PDCCH) transmission and to reduce the false alarm rate of NR-PDCCH blind decoding is proposed. The downlink control information (DCI) bits are carried by NR-PDCCH to be transmitted to UEs after CRC attachment, channel encoding, interleaving, and modulation. The proposed NR-PDCCH design is separated into two parts. In a first part, a UE-ID or RNTI is used to derive a CRC mask or a scrambling sequence for CRC attachment of the DCI bits. In a second part, a UE-specific ID is used to derive an interleaver before or after channel encoding of the DCI bits. If the interleaver is placed before channel encoding, it takes the form of a bit interleaver. If the interleaver is placed after channel encoding, it takes the form of a bit interleaver or a channel interleaver.
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公开(公告)号：US20190230590A1
公开(公告)日：2019-07-25
申请号：US16248763
申请日：2019-01-15
Applicant: MediaTek Inc.
Inventor： Wei-De Wu , Pei-Kai Liao , Chien-Hwa Hwang
IPC: H04W52/02
Abstract: Techniques and examples of user equipment (UE) power saving enhancements in mobile communications are described. A UE establishes a wireless connection with a network node of a wireless network. The UE executes one or more procedures of a plurality of procedures related to bandwidth part (BWP) enhancement to improve power saving by the UE. The plurality of procedures include a time domain processing reduction procedure, a frequency domain processing reduction procedure, and a spatial domain processing reduction procedure.
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55.发明申请公开(公告)号：US20190082335A1
公开(公告)日：2019-03-14
申请号：US16127481
申请日：2018-09-11
Applicant: MEDIATEK INC.
Inventor： Chia-Hao Yu , Ming-Po Chang , Chiou-Wei Tsai , Chien-Hwa Hwang , Jiann-Ching Guey
Abstract: A method of beam failure recovery request (BFRQ) transmission is proposed. UE can search for UE-specific control channel in a search space that is signaled specifically for monitoring network response of the BFRQ. Furthermore, configurations indicated specifically for BFRQ can be carried by dedicated signaling such as high-layer radio resource control (RRC) signaling. After successfully rebuilding connection, UE assumes the demodulation reference signal (DMRS) ports of UE-specific control channel to be spatially quasi-co-located (QCL-ed) with the reference signals identified during the beam failure recovery procedure.
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Patent Agency Ranking
公开(公告)号：US20190058554A1
公开(公告)日：2019-02-21
申请号：US16105109
申请日：2018-08-20
Applicant: MEDIATEK INC.
Inventor： Pei-Kai Liao , Ming-Che Lu , Yen-Shuo Chang , Chien-Hwa Hwang
Abstract: An efficient Hybrid Automatic Repeat Request (HARQ) operation for low-latency and high-performance services in one radio access technology (RAT) in a wireless communication network is proposed. Under the proposed single HARQ operation scheme, an adaptive HARQ-ACK feedback timing is applied based on UE conditions and UE capability to support the tradeoff between low-latency and high-performance applications. In one embodiment, UE signals the network its HARQ-ACK timing capability. Furthermore, an adaptive number of HARQ processes is applied with a fixed HARQ soft buffer size because the hardware cost for HARQ soft buffer does not linearly increase with the number of HARQ processes. In one embodiment, UE determines a nominal HARQ soft buffer size and HARQ soft buffer size for each HARQ process based on a network-configured HARQ process number.
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公开(公告)号：US20180279135A1
公开(公告)日：2018-09-27
申请号：US15927226
申请日：2018-03-21
Applicant: MEDIATEK INC.
Inventor： Chien-Hwa Hwang , Chien-Chang Li , Yi-Ju Liao , Pei-Kai Liao , Weidong Yang
Abstract: A new design for physical downlink control channel (PDCCH) is proposed for the next generation 5G new radio systems. A UE receives the configuration of a default control resource set (CORESET) in MIB/SIB from its serving base station. The default CORESET contains both common search space and UE-specific search space for candidate PDCCH transmission. A PDCCH in a default CORESET is mapped to physical resource in a distributed or localized manner. Specifically, various REG-to-CCE mapping rules are proposed to improve frequency diversity gain, or frequency selectivity gain, or to reduce latency of PDCCH processing. Further, to facilitate analog beamforming in mmWave systems, the default CORESET is transmitted in a synchronization signal (SS) block associated with a corresponding analog beam direction.
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公开(公告)号：US10057018B2
公开(公告)日：2018-08-21
申请号：US14870207
申请日：2015-09-30
Applicant: MEDIATEK INC.
Inventor： Shiang-Jiun Lin , Min Wu , Chien-Hwa Hwang , Xiangyang Zhuang
CPC classification number: H04L1/1861 , H04L1/1812 , H04L1/1822 , H04L1/1848 , H04L1/1854 , H04L5/1469 , H04W72/1289 , H04W76/28
Abstract: A method of DRX operation enhancement in adaptive TDD systems is proposed. A UE configures and enters DRX operation in an LTE/LTE-A mobile communication network. The UE obtains adaptive TDD configuration information from a base station. The adaptive TDD configuration information comprises an actual TDD configuration and a reference TDD configuration. The UE performs DRX timer counting and HARQ timer counting based on the reference TDD configuration. The UE also synchronizes DRX status with the base station. With the reference TDD configuration, it can avoid the potential misunderstanding between eNB and UE regarding DRX and HARQ RTT timing when TDD configuration changes.
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公开(公告)号：US20180199317A1
公开(公告)日：2018-07-12
申请号：US15865229
申请日：2018-01-08
Applicant: MEDIATEK INC.
Inventor： Chien-Hwa Hwang , Weidong Yang , Pei-Kai Liao , Wei-De Wu
CPC classification number: H04W72/042 , H04L1/0009 , H04L1/0041 , H04L1/0061 , H04L1/0072 , H04L1/1812 , H04W88/02
Abstract: A method to improve the design of new radio physical downlink control channel (NR-PDCCH) transmission and to reduce the false alarm rate of NR-PDCCH blind decoding is proposed. The downlink control information (DCI) bits are carried by NR-PDCCH to be transmitted to UEs after CRC attachment, channel encoding, interleaving, and modulation. The proposed NR-PDCCH design is separated into two parts. In a first part, a UE-ID or RNTI is used to derive a CRC mask or a scrambling sequence for CRC attachment of the DCI bits. In a second part, a UE-specific ID is used to derive an interleaver before or after channel encoding of the DCI bits. If the interleaver is placed before channel encoding, it takes the form of a bit interleaver. If the interleaver is placed after channel encoding, it takes the form of a bit interleaver or a channel interleaver.
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公开(公告)号：US20180069685A1
公开(公告)日：2018-03-08
申请号：US15698594
申请日：2017-09-07
Applicant: MediaTek Inc.
Inventor： Weidong Yang , Yu-Chuan Lin , Chien-Hwa Hwang , Bo-Si Chen , Pei-Kai Liao , Yih-Shen Chen
CPC classification number: H04L5/14 , H04L5/1469 , H04W52/146 , H04W52/242 , H04W52/34 , H04W52/346 , H04W52/38 , H04W52/383 , H04W52/40 , H04W52/46 , H04W72/0406 , H04W72/0446
Abstract: Concepts and examples pertaining to dynamic time division duplex (TDD) in wireless communication systems are described. A first node of a wireless network of a plurality of nodes exchanges coordination information, which is related to transmissions of the nodes of the wireless network using TDD, with at least a second node of the wireless network. The first node performs wireless communications with at least the second node based on the exchanged coordination information.
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