公开(公告)号：US20110170497A1

公开(公告)日：2011-07-14

申请号：US12930454

申请日：2011-01-07

申请人： Chih-Yuan Lin ,  Pei-Kai Liao

发明人： Chih-Yuan Lin ,  Pei-Kai Liao

IPC分类号： H04W72/04

CPC分类号： H04L5/0023 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0091 ,  H04W72/042

摘要： A method of multi-antenna resource allocation for uplink channel sounding in a wireless communication system is provided. A base station (eNB) first selects a number of sounding reference signal (SRS) parameters. The eNB then determines each selected SRS parameter for a first antenna of a user equipment (UE) having multiple antennas. The determined parameters are jointly encoded to a first set of parameter combination using a number of signaling bits. The eNB transmits the signaling bits for the first antenna to the UE without transmits additional signaling bits for other antennas. The UE receives the signaling bits for SRS resource allocation for the first antenna and derives a second set of parameter combination for a second antenna based on a predetermined rule. By implicitly signaling SRS resource allocation for multiple antennas, it is easy for the eNB to allocate SRS resource for different antennas of different UEs with reduced overhead.

摘要翻译： 提供了一种用于无线通信系统中的上行链路信道探测的多天线资源分配方法。 基站（eNB）首先选择多个探测参考信号（SRS）参数。 然后，eNB确定用于具有多个天线的用户设备（UE）的第一天线的每个所选择的SRS参数。 所确定的参数使用多个信令位联合编码为第一组参数组合。 eNB向第一天线发送用于第一天线的信令比特，而不发送用于其他天线的附加信令比特。 UE接收用于第一天线的SRS资源分配的信令比特，并且基于预定规则导出第二天线的第二组参数组合。 通过隐含地发送用于多个天线的SRS资源分配，eNB可以容易地以减少的开销为不同UE的不同天线分配SRS资源。

公开(公告)号：US09750046B2

公开(公告)日：2017-08-29

申请号：US14779176

申请日：2014-04-03

申请人： Hua-Min Chen ,  Pei-Kai Liao ,  Xiangyang Zhuang

发明人： Hua-Min Chen ,  Pei-Kai Liao ,  Xiangyang Zhuang

IPC分类号： H04W4/00 ,  H04W72/12 ,  H04L5/00 ,  H04W88/02

CPC分类号： H04W72/1289 ,  H04L5/0044 ,  H04L5/0091 ,  H04W88/02

摘要： A method includes: determining a first set of radio resources by decoding a dynamic indicator channel, wherein the dynamic indicator channel indicates a location of the first set of radio resources detecting a physical control channel in the determined first set of radio resources; and obtaining scheduling information of a data channel that carries a message from the decoded physical control channel.

公开(公告)号：US08737299B2

公开(公告)日：2014-05-27

申请号：US13134857

申请日：2011-06-20

申请人： Pei-Kai Liao

发明人： Pei-Kai Liao

IPC分类号： H04W4/00 ,  H04L5/00

CPC分类号： H04L5/0055 ,  H04L1/1614 ,  H04L1/1861 ,  H04L1/1896 ,  H04L5/0007 ,  H04L5/001 ,  H04L5/0082 ,  H04L5/0094

摘要： An efficient uplink HARQ feedback channel resource allocation scheme is adopted for carrier aggregation in a multi-carrier LTE/LTE-A system. Two resource allocation schemes (e.g., explicit and hybrid) for HARQ ACK/NACK (A/N) are applied. Part of the resources is allocated based on explicit method via RRC configuration. Another part of the resources is allocated based on hybrid method via both RRC and implicit information carried by downlink schedulers. In an explicit method, the physical resource for A/N feedback information is determined based on a resource index in a DL scheduling grant. The DL grant corresponds to transport blocks over a configured CC. The resource index points to a physical resource from a set of candidate uplink A/N physical resources reserved for the CC. In an implicit method, the A/N physical resources are determined based on a logical address of the DL scheduling grant.

摘要翻译： 在多载波LTE / LTE-A系统中采用有效的上行HARQ反馈信道资源分配方案进行载波聚合。 应用用于HARQ ACK / NACK（A / N）的两种资源分配方案（例如，显式和混合）。 通过RRC配置，基于显式方法分配部分资源。 资源的另一部分是通过RRC和由下行链路调度器携带的隐式信息基于混合方法分配的。 在显式方法中，基于DL调度授权中的资源索引来确定用于A / N反馈信息的物理资源。 DL授权对应于配置的CC上的传输块。 资源索引从为CC保留的一组候选上行链路A / N物理资源指向物理资源。 在隐式方法中，基于DL调度授权的逻辑地址来确定A / N物理资源。

公开(公告)号：US20100002571A1

公开(公告)日：2010-01-07

申请号：US12498531

申请日：2009-07-07

申请人： Pei-Kai Liao ,  I-Kang Fu

发明人： Pei-Kai Liao ,  I-Kang Fu

IPC分类号： H04J11/00 ,  H04L27/00

CPC分类号： H04L27/2647 ,  H04L5/0007 ,  H04L5/0039 ,  H04L5/0044 ,  H04L27/261 ,  H04L27/2644

摘要： A communications apparatus is provided. A receiving module receives a signal with a predetermined signal bandwidth. A low pass filter filters the signal to obtain a filtered signal. A filter bandwidth of the low pass filter is wide enough to pass the regular sub-carrier frequency components and at least half of the guard sub-carrier frequency components of the signal. An analog to digital converter samples the filtered signal with a sampling rate exceeding a standard sampling rate defined in accordance with the predetermined signal bandwidth of the signal to obtain a plurality of digital samples. A Fast Fourier Transform module performs a fast Fourier transform on a predetermined number of points of the digital samples to obtain a plurality of transformed samples. The predetermined number exceeds a standard number defined in accordance with the predetermined carrier bandwidth. A sub-carrier collector collects the data from the transformed samples.

摘要翻译： 提供一种通信装置。 接收模块接收具有预定信号带宽的信号。 低通滤波器对信号进行滤波以获得滤波信号。 低通滤波器的滤波器带宽足够宽以使正常的子载波频率分量和信号的保护子载波频率分量的至少一半。 模数转换器以超过根据信号的预定信号带宽定义的标准采样速率的采样率对滤波后的信号进行采样，以获得多个数字采样。 快速傅立叶变换模块对数字样本的预定数量的点执行快速傅里叶变换，以获得多个变换样本。 预定数量超过根据预定载波带宽定义的标准号码。 子载波收集器从转换的样本收集数据。

公开(公告)号：US20240172258A1

公开(公告)日：2024-05-23

申请号：US18512295

申请日：2023-11-17

申请人： Lung-Sheng Tsai ,  Chun-Hao Fang ,  Wei-Kai Chang ,  Chia-Hao Yu ,  Pei-Kai Liao

发明人： Lung-Sheng Tsai ,  Chun-Hao Fang ,  Wei-Kai Chang ,  Chia-Hao Yu ,  Pei-Kai Liao

IPC分类号： H04W72/51 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/232

CPC分类号： H04W72/51 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/232

摘要： A first wireless device reports to a base station at least one of (a) a capability of the first wireless device for path selection or path combining and (b) a supported frequency range on the second time-frequency resource. The first wireless device receives, from the base station, first control information indicating whether the first wireless device should receive data on the first time-frequency resource from the base station, on the second time-frequency resource from the second device, or both the first and second time-frequency resources, wherein the data are transmitted from the base station on the first time-frequency resource. The first wireless device receives the data based on the first control information.

公开(公告)号：US09936485B2

公开(公告)日：2018-04-03

申请号：US14758425

申请日：2014-01-10

申请人： Hua-Min Chen ,  Pei-Kai Liao ,  Xiangyang Zhuang

发明人： Hua-Min Chen ,  Pei-Kai Liao ,  Xiangyang Zhuang

IPC分类号： H04W72/04 ,  H04W48/12 ,  H04W84/04 ,  H04L5/00 ,  H04J11/00

CPC分类号： H04W72/0406 ,  H04J11/0086 ,  H04L5/0053 ,  H04W48/12 ,  H04W72/042 ,  H04W84/042

摘要： A method for obtaining scheduling information of a data channel is disclosed. The method includes: receiving a set of radio resources for a set of candidate control channels, wherein a part of the set of candidate control channels constitute the enhanced common search space (ECSS) for an enhanced physical downlink control channel (EPDCCH); attempting to decode each candidate control channel to obtain a physical control channel; and obtaining scheduling information of the data channel from the decoded physical control channel.

公开(公告)号：US08891350B2

公开(公告)日：2014-11-18

申请号：US12459720

申请日：2009-07-06

申请人： I-Kang Fu ,  Po-Yuen Cheng ,  Pei-Kai Liao

发明人： I-Kang Fu ,  Po-Yuen Cheng ,  Pei-Kai Liao

IPC分类号： H04J11/00 ,  H04W4/00 ,  H04L5/00 ,  H04L27/26

CPC分类号： H04W72/0453 ,  H04J11/00 ,  H04L5/0007 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0039 ,  H04L5/0044 ,  H04L5/0048 ,  H04L5/0053 ,  H04L25/03343 ,  H04L25/03821 ,  H04L27/2626 ,  H04L27/2646 ,  H04L27/2666 ,  H04W72/02

摘要： A method of data transmission over guard sub-carriers is provided in a multi-carrier OFDM system. Adjacent radio frequency (RF) carriers are used to carry radio signals transmitted through adjacent frequency channels. A plurality of guard sub-carriers between adjacent frequency channels are aligned and identified for data transmission in a pre-defined physical resource unit. The identified guard sub-carriers do not overlap with normal data sub-carriers of the radio signals transmitted through the adjacent frequency channels. At least one of the identified guard sub-carriers is reserved as NULL sub-carrier. A flexible multi-carrier transceiver architecture is also provided in a multi-carrier OFDM system. Different multi-carrier and/or MIMO/SISO data transmission schemes are implemented by adaptively reconfigure same hardware modules including common MAC layer module, physical layer entities, and RF entities. Furthermore, the flexible multi-carrier transceiver architecture can be used to support data transmission over guard sub-carriers.

摘要翻译： 在多载波OFDM系统中提供了一种在保护子载波上进行数据传输的方法。 相邻射频（RF）载波用于携带通过相邻频道传输的无线电信号。 在预定义的物理资源单元中，对齐和识别相邻频道之间的多个保护子载波用于数据传输。 所识别的保护子载波不与通过相邻频道发送的无线电信号的正常数据子载波重叠。 所确定的保护子载波中的至少一个被保留为空子载波。 在多载波OFDM系统中还提供灵活的多载波收发器架构。 通过自适应地重新配置包括公共MAC层模块，物理层实体和RF实体的相同硬件模块来实现不同的多载波和/或MIMO / SISO数据传输方案。 此外，灵活的多载波收发器架构可以用于支持保护子载波上的数据传输。

公开(公告)号：US08665695B2

公开(公告)日：2014-03-04

申请号：US12498531

申请日：2009-07-07

申请人： Pei-Kai Liao ,  I-Kang Fu

发明人： Pei-Kai Liao ,  I-Kang Fu

IPC分类号： H04J11/00

CPC分类号： H04L27/2647 ,  H04L5/0007 ,  H04L5/0039 ,  H04L5/0044 ,  H04L27/261 ,  H04L27/2644

摘要： A communications apparatus is provided. A receiving module receives a signal with a predetermined signal bandwidth. A low pass filter filters the signal to obtain a filtered signal. A filter bandwidth of the low pass filter is wide enough to pass the regular sub-carrier frequency components and at least half of the guard sub-carrier frequency components of the signal. An analog to digital converter samples the filtered signal with a sampling rate exceeding a standard sampling rate defined in accordance with the predetermined signal bandwidth of the signal to obtain a plurality of digital samples. A Fast Fourier Transform module performs a fast Fourier transform on a predetermined number of points of the digital samples to obtain a plurality of transformed samples. The predetermined number exceeds a standard number defined in accordance with the predetermined carrier bandwidth. A sub-carrier collector collects the data from the transformed samples.

摘要翻译： 提供一种通信装置。 接收模块接收具有预定信号带宽的信号。 低通滤波器对信号进行滤波以获得滤波信号。 低通滤波器的滤波器带宽足够宽以使正常的子载波频率分量和信号的保护子载波频率分量的至少一半。 模数转换器以超过根据信号的预定信号带宽定义的标准采样速率的采样率对滤波后的信号进行采样，以获得多个数字采样。 快速傅立叶变换模块对数字样本的预定数量的点执行快速傅里叶变换，以获得多个变换样本。 预定数量超过根据预定载波带宽定义的标准号码。 子载波收集器从转换的样本收集数据。

公开(公告)号：US08576786B2

公开(公告)日：2013-11-05

申请号：US12655515

申请日：2009-12-30

申请人： Pei-Kai Liao ,  Yu-Hao Chang ,  Kuo-Ming Wu

发明人： Pei-Kai Liao ,  Yu-Hao Chang ,  Kuo-Ming Wu

IPC分类号： H04W4/00

CPC分类号： H04L5/005 ,  H04L27/2601 ,  H04W56/0015 ,  H04W72/04

摘要： A hierarchical downlink (DL) synchronization channel (SCH) is provided for wireless OFDM/OFDMA systems. The SCH includes a Primary SCH (P-SCH) for carrying PA-Preambles used for coarse timing and frequency synchronization, and a Secondary SCH (S-SCH) for carrying SA-Preambles used for cell ID detection. The total time length occupied by P-SCH and S-SCH is equal to one OFDM symbol time length of a data channel, and S-SCH is located in front of P-SCH in each DL frame. A perfect multi-period time-domain structure is created and maintained in P-SCH to increase preciseness of frame boundary estimation. With overlapping deployment of macrocells and femtocells, a predefined SCH configuration scheme is provided to separate frequency subbands used for macrocells and femtocells such that interferences in S-SCH can be mitigated. In addition, a self-organized SCH configuration scheme is provided to allow more flexibility for femtocells to avoid or introduce interference in S-SCH.

摘要翻译： 为无线OFDM / OFDMA系统提供分层下行链路（DL）同步信道（SCH）。 SCH包括用于携带用于粗定时和频率同步的PA前导的主SCH（P-SCH）和用于携带用于小区ID检测的SA-前导的辅SCH（S-SCH）。 由P-SCH和S-SCH占用的总时间长度等于数据信道的一个OFDM符号时间长度，并且S-SCH位于每个DL帧中的P-SCH前面。 在P-SCH中创建并保持了完美的多周期时域结构，以增加帧边界估计的精确度。 通过宏单元和毫微微小区的重叠部署，提供预定义的SCH配置方案来分离用于宏小区和毫微微小区的频率子带，从而可以减轻S-SCH中的干扰。 另外，提供了自组织的SCH配置方案，以允许毫微微小区更灵活地避免或引入S-SCH中的干扰。

公开(公告)号：US08374139B2

公开(公告)日：2013-02-12

申请号：US12655520

申请日：2009-12-30

申请人： Yu-Hao Chang ,  Pei-Kai Liao

发明人： Yu-Hao Chang ,  Pei-Kai Liao

IPC分类号： H04W4/00

CPC分类号： H04L5/0053 ,  H04L27/2602 ,  H04L27/2656 ,  H04W56/00

摘要： In advanced wireless OFDMA communication systems, hierarchical synchronization is adopted to synchronize between a base station (BS) and a mobile station (MS). In a hierarchical synchronization architecture, primary advanced preamble (PA-Preamble) is used for coarse time domain synchronization while cell ID is detected using several accumulated secondary advanced preambles (SA-Preambles). Network entry latency can be reduced by adjusting the relative location of superframe header (SFH), PA-Preamble and SA-Preambles within a superframe. Three different synchronization channel (SCH) architectures are proposed to provide different tradeoffs between network entry latency and the robustness of SA-Preamble design and cell ID detection.

摘要翻译： 在先进的无线OFDMA通信系统中，采用分层同步来在基站（BS）和移动台（MS）之间进行同步。 在分层同步架构中，主要的高级前同步码（PA-Preamble）用于粗略的时域同步，同时使用几个累加的辅助高级前导码（SA-前导码）来检测小区ID。 可以通过调整超帧中的超帧头（SFH），PA前导码和SA-前导码的相对位置来减少网络进入延迟。 提出了三种不同的同步信道（SCH）架构，以提供网络入口延迟与SA前导码设计和小区ID检测的鲁棒性之间的不同权衡。