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41. 发明申请

US20160227545A1 Frame Structure and Data Mapping for License Assisted Access 审中-公开
标题翻译：许可协助访问的框架结构和数据映射
公开(公告)号：US20160227545A1
公开(公告)日：2016-08-04
申请号：US15010000
申请日：2016-01-29
申请人： MEDIATEK INC.
发明人： Weidong Yang , Pei-Kai Liao , Chien-Chang Li , Bo-Si Chen
IPC分类号： H04W72/04 , H04W16/14
CPC分类号： H04W16/14 , H04L5/0007 , H04L5/0048 , H04L5/0092 , H04L5/14 , H04W72/0406
摘要： Methods and apparatus are provided for improved Licensed Assisted Access (LAA) networks. A LAA subframe is received via an unlicensed frequency band. Control information is communicated via predetermined symbol locations within the LAA subframe. An indication of a first and a second symbol locations is received. A LAA subframe is then received. It is determined if control information is present at the first or second symbol locations within the received LAA subframe. Demodulation parameters based on the control information are determined. The LAA subframe is demodulated using the demodulation parameters. An indication of a transmission duration is communicated to a UE. The transmission duration is determined based on the LAA subframe. A type of subframe is determined based on transmission duration. Automatic Gain Control (AGC) protection is provided in a LAA subframe. The AGC protection LLA subframe does not communicate control information in a symbol adjacent to a reservation signal.
摘要翻译：提供了用于改进的许可辅助接入（LAA）网络的方法和装置。经由非许可频带接收LAA子帧。通过LAA子帧内的预定符号位置传送控制信息。接收到第一和第二符号位置的指示。然后接收LAA子帧。确定控制信息是否存在于接收的LAA子帧内的第一或第二符号位置处。确定基于控制信息的解调参数。 LAA子帧使用解调参数进行解调。向UE发送传输持续时间的指示。基于LAA子帧确定传输持续时间。基于传输持续时间来确定一种类型的子帧。 LAA子帧中提供自动增益控制（AGC）保护。 AGC保护LLA子帧不在与预留信号相邻的符号中传送控制信息。

42. 发明授权

US11018910B2 On PDCCH DMRS mapping and coreset resource allocation 有权
公开(公告)号：US11018910B2
公开(公告)日：2021-05-25
申请号：US16191640
申请日：2018-11-15
申请人： Mediatek Inc.
发明人： Yiju Liao , Chien Hwa Hwang , Chien-Chang Li
IPC分类号： H04W76/27 , H04L27/14 , H04L5/00 , H04L25/02 , H04W80/02
摘要： A UE determines a first DCCH resource candidate in a first CORESET on a carrier, the first DCCH resource candidate including a first set of RBs. The UE also determines a first sequence of DMRSs that are mapped, starting at a reference point, to RBs in a predetermined range within the carrier in a frequency domain, the predetermined range containing the first DCCH resource candidate in the frequency domain. The UE further determines a first reference location of the first set of RBs. The UE determines, based on the first reference location, a first set of DMRSs from the first sequence of DMRSs, the first set of DMRSs being mapped to the first set of RBs. The UE obtains a channel estimation based on the first set of DMRSs; and The UE performs blind decoding of the first DCCH resource candidate based on the channel estimation.

43. 发明申请

US20200351881A1 Efficient Wide Bandwidth Operation and Efficient UE-Specific RF Bandwidth Adaptation 审中-公开
公开(公告)号：US20200351881A1
公开(公告)日：2020-11-05
申请号：US16932952
申请日：2020-07-20
申请人： MEDIATEK INC.
发明人： Pei-Kai Liao , Tao Chen , Chien-Chang Li
IPC分类号： H04W72/04 , H04W56/00 , H04W48/10 , H04W48/16
摘要： In one novel aspect, a plurality of synchronization signal (SS) anchors within a block of a contiguous spectrum is configured in a wireless network. Each SS anchor is a primary SS anchor or a secondary SS anchor. The UE performs an initial access by detecting a first primary SS anchor and receives one or more virtual carrier configurations with corresponding SS anchors within the block of the contiguous spectrum. In another novel aspect, the UE performs an initial access through a first RF band with a first bandwidth and a first center frequency, receives a switching signal to switch from the first RF band to a second RF band with a second bandwidth and a second center frequency, the second bandwidth is different from the first bandwidth, and performs a RF bandwidth adaptation from the first RF band to the second RF band based on the adaptation signal.

44. 发明授权

US10757581B2 Physical downlink control channel design for NR systems 有权
公开(公告)号：US10757581B2
公开(公告)日：2020-08-25
申请号：US15927226
申请日：2018-03-21
申请人： MEDIATEK INC.
发明人： Chien-Hwa Hwang , Chien-Chang Li , Yi-Ju Liao , Pei-Kai Liao , Weidong Yang
IPC分类号： H04W4/00 , H04W16/28 , H04W72/04 , H04L5/00 , H04L1/18 , H04W74/08 , H04B7/06
摘要： 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.

45. 发明授权

US10523392B2 Downlink reference signals for radio resource management (RRM) measurement 有权
公开(公告)号：US10523392B2
公开(公告)日：2019-12-31
申请号：US15864838
申请日：2018-01-08
申请人： MEDIATEK INC.
发明人： Hsuan-Li Lin , Pei-Kai Liao , Chien-Chang Li
IPC分类号： H04L5/00 , H04L12/801 , H04B7/06 , H04W4/70 , H04W24/10
摘要： Aspects of the disclosure provide a method for transmission of downlink mobile reference signals (MRSs). The method can include transmitting an MRS that includes a first part MRS and an additional part MRS, wherein the first part MRS includes first MRS bursts each multiplexed with a synchronization signal block (SS block), and the additional part MRS includes second MRS bursts and is configurable to be transmitted or not transmitted.

46. 发明授权

US10420079B2 Efficient control and data multiplexing in communication systems 有权
公开(公告)号：US10420079B2
公开(公告)日：2019-09-17
申请号：US15473622
申请日：2017-03-30
申请人： MEDIATEK INC.
发明人： Weidong Yang , Yih-Shen Chen , Chien-Chang Li , Bo-Si Chen
IPC分类号： H04W72/04 , H04W52/14 , H04W72/10 , H04W72/08 , H04L5/00 , H04W84/04 , H04W52/16 , H04W52/28
摘要： Methods and apparatus are provided for control overhead reduction. The UE configures one or more short transmission time interval regions over a normal TTI region shared by the UE and one or more other, each UE includes a self-contained control information sPDCCH occupying a control information region. The UE detects a cover signal, which indicates one or more resource elements in the sPDCCH control-information region that can be used for data transmission. The UE obtains data transmission from the REs in the SPDCCH control information region based on the detected cover signal. In one embodiment, the cover signal is a dedicated signal. In another embodiment, the cover signal is a common signal. In yet another embodiment, the cover signal is encoded in a downlink control information (DCI) intended for the UE. In one embodiment, the cover signal indicates one or more CCE REs to be excluded for data transmission.

47. 发明授权

US10397795B2 Frame structure and data mapping for license assisted access 有权
公开(公告)号：US10397795B2
公开(公告)日：2019-08-27
申请号：US15010000
申请日：2016-01-29
申请人： MEDIATEK INC.
发明人： Weidong Yang , Pei-Kai Liao , Chien-Chang Li , Bo-Si Chen
IPC分类号： H04W4/00 , H04W16/14 , H04W72/04 , H04L5/00 , H04L5/14
摘要： Methods and apparatus are provided for improved Licensed Assisted Access (LAA) networks. A LAA subframe is received via an unlicensed frequency band. Control information is communicated via predetermined symbol locations within the LAA subframe. An indication of a first and a second symbol locations is received. A LAA subframe is then received. It is determined if control information is present at the first or second symbol locations within the received LAA subframe. Demodulation parameters based on the control information are determined. The LAA subframe is demodulated using the demodulation parameters. An indication of a transmission duration is communicated to a UE. The transmission duration is determined based on the LAA subframe. A type of subframe is determined based on transmission duration. Automatic Gain Control (AGC) protection is provided in a LAA subframe. The AGC protection LLA subframe does not communicate control information in a symbol adjacent to a reservation signal.

48. 发明申请

US20180368115A1 DESIGN OF GROUP-COMMON PDCCH 审中-公开
公开(公告)号：US20180368115A1
公开(公告)日：2018-12-20
申请号：US16006079
申请日：2018-06-12
申请人： Mediatek Inc.
发明人： Chien-Chang Li , Chien Hwa Hwang , Yiju Liao , Weidong Yang , Pei-Kai Liao
IPC分类号： H04W72/04
摘要： In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a UE. The UE receives resource elements in a time slot. The UE then locates a first control resource set (CORESET) in the resource elements. The UE performs, when the UE is configured to obtain a group common down link control channel, a first blind decoding on the first CORESET to obtain the group common down link control channel based on a group identifier.

49. 发明申请

US20180324689A1 GROUP COMMON PDCCH DESIGN IN NR 审中-公开
公开(公告)号：US20180324689A1
公开(公告)日：2018-11-08
申请号：US15971123
申请日：2018-05-04
申请人： Mediatek Inc.
发明人： Chien-Chang Li , Yiju Liao , Chien Hwa Hwang , Pei-Kai Liao
IPC分类号： H04W48/16 , H04W72/12 , H04W72/14 , H04W72/04 , H04L5/00 , H04W24/10 , H04W74/08 , H04W52/14
CPC分类号： H04W48/16 , H04L5/0053 , H04W24/10 , H04W52/14 , H04W72/042 , H04W72/0446 , H04W72/121 , H04W72/14 , H04W74/0808
摘要： In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a user equipment (UE). The UE receives symbols in a first time slot. The first time slot includes a control region and a data region. The UE attempts to detect, when the UE is configured to detect, a group common downlink control channel carried by the received symbols. The group common downlink control channel contains common information directed to a group of UEs including the UE. When the detection is successful, the UE determines, based on the common information, at least one of (a) a first slot configuration, (b) a puncture configuration, (c) a transmission burst duration, and (d) one or more sub-regions of the control region.

50. 发明申请

US20180279135A1 Physical Downlink Control Channel Design for NR Systems 审中-公开
公开(公告)号：US20180279135A1
公开(公告)日：2018-09-27
申请号：US15927226
申请日：2018-03-21
申请人： MEDIATEK INC.
发明人： Chien-Hwa Hwang , Chien-Chang Li , Yi-Ju Liao , Pei-Kai Liao , Weidong Yang
IPC分类号： H04W16/28 , H04L1/18 , H04W72/04 , H04W74/08 , H04L5/00 , H04B7/06
摘要： 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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