公开(公告)号：US08468396B2

公开(公告)日：2013-06-18

申请号：US12655522

申请日：2009-12-30

申请人： Ciou-Ping Wu ,  Pei-Kai Liao ,  Yu-Hao Chang ,  Yih-Shen Chen

发明人： Ciou-Ping Wu ,  Pei-Kai Liao ,  Yu-Hao Chang ,  Yih-Shen Chen

IPC分类号： G06F11/00

CPC分类号： H04L1/0066 ,  H04L1/0042 ,  H04L1/0071 ,  H04L27/34

摘要： A channel interleaver comprises a novel constellation-based permutation module. The channel interleaver first receives a plurality of sets of encoded bits generated from an FEC encoder. The encoded bits are distributed into multiple subblocks and each subblock comprises a plurality of adjacent bits. A subblock interleaver interleaves each subblock and outputs a plurality of interleaved bits. The constellation-based permutation module rearranges the interleaved bits and outputs a plurality of rearranged bits. The rearranged bits are supplied to a symbol mapper such that a plurality of consecutively encoded bits in the same set of the encoded bits generated from the FEC encoder is prevented to be mapped onto the same level of bit reliability of a modulation symbol. In addition, the plurality of adjacent bits of each subblock is also prevented to be mapped onto the same level of bit reliability to achieve constellation diversity and to improve decoding performance.

摘要翻译： 信道交织器包括新颖的基于星座的置换模块。 信道交织器首先接收从FEC编码器生成的多组编码比特。 编码的比特被分配到多个子块中，并且每个子块包括多个相邻的比特。 子块交织器交织每个子块并输出多个交织比特。 基于星座的置换模块重新排列交织的比特并输出多个重新排列的比特。 重新排列的比特被提供给符号映射器，使得从FEC编码器生成的同一组编码比特中的多个连续编码比特被阻止被映射到调制符号的相同级别的比特可靠性。 此外，还防止了每个子块的多个相邻位被映射到相同级别的比特可靠性以实现星座分集并提高解码性能。

公开(公告)号：US20100169738A1

公开(公告)日：2010-07-01

申请号：US12655522

申请日：2009-12-30

申请人： Ciou-Ping Wu ,  Pei-Kai Liao ,  Yu-Hao Chang ,  Yih-Shen Chen

发明人： Ciou-Ping Wu ,  Pei-Kai Liao ,  Yu-Hao Chang ,  Yih-Shen Chen

IPC分类号： H03M13/05

CPC分类号： H04L1/0066 ,  H04L1/0042 ,  H04L1/0071 ,  H04L27/34

摘要： A channel interleaver comprises a novel constellation-based permutation module. The channel interleaver first receives a plurality of sets of encoded bits generated from an FEC encoder. The encoded bits are distributed into multiple subblocks and each subblock comprises a plurality of adjacent bits. A subblock interleaver interleaves each subblock and outputs a plurality of interleaved bits. The constellation-based permutation module rearranges the interleaved bits and outputs a plurality of rearranged bits. The rearranged bits are supplied to a symbol mapper such that a plurality of consecutively encoded bits in the same set of the encoded bits generated from the FEC encoder is prevented to be mapped onto the same level of bit reliability of a modulation symbol. In addition, the plurality of adjacent bits of each subblock is also prevented to be mapped onto the same level of bit reliability to achieve constellation diversity and to improve decoding performance.

摘要翻译： 信道交织器包括新颖的基于星座的置换模块。 信道交织器首先接收从FEC编码器生成的多组编码比特。 编码的比特被分配到多个子块中，并且每个子块包括多个相邻的比特。 子块交织器交织每个子块并输出多个交织比特。 基于星座的置换模块重新排列交织的比特并输出多个重新排列的比特。 重新排列的比特被提供给符号映射器，使得从FEC编码器生成的同一组编码比特中的多个连续编码比特被阻止被映射到调制符号的相同级别的比特可靠性。 此外，还防止了每个子块的多个相邻位被映射到相同级别的比特可靠性以实现星座分集并提高解码性能。

公开(公告)号：US08799735B2

公开(公告)日：2014-08-05

申请号：US12655521

申请日：2009-12-30

申请人： Ciou-Ping Wu ,  Pei-Kai Liao ,  Yu-Hao Chang ,  Yih-Shen Chen

发明人： Ciou-Ping Wu ,  Pei-Kai Liao ,  Yu-Hao Chang ,  Yih-Shen Chen

IPC分类号： G06F11/00

CPC分类号： H04L1/0066 ,  H04L1/0042 ,  H04L1/0071 ,  H04L27/34

摘要： A channel interleaver comprises a novel constellation-based permutation module. The channel interleaver first receives a plurality of sets of encoded bits generated from an FEC encoder. The encoded bits are distributed into multiple subblocks and each subblock comprises a plurality of adjacent bits. A subblock interleaver interleaves each subblock and outputs a plurality of interleaved bits. The constellation-based permutation module rearranges the interleaved bits and outputs a plurality of rearranged bits. The rearranged bits are supplied to a symbol mapper such that a plurality of consecutively encoded bits in the same set of the encoded bits generated from the FEC encoder is prevented to be mapped onto the same level of bit reliability of a modulation symbol. In addition, the plurality of adjacent bits of each subblock is also prevented to be mapped onto the same level of bit reliability to achieve constellation diversity and to improve decoding performance.

摘要翻译： 信道交织器包括新颖的基于星座的置换模块。 信道交织器首先接收从FEC编码器生成的多组编码比特。 编码的比特被分配到多个子块中，并且每个子块包括多个相邻的比特。 子块交织器交织每个子块并输出多个交织比特。 基于星座的置换模块重新排列交织的比特并输出多个重新排列的比特。 重新排列的比特被提供给符号映射器，使得从FEC编码器生成的同一组编码比特中的多个连续编码比特被阻止被映射到调制符号的相同级别的比特可靠性。 此外，还防止了每个子块的多个相邻位被映射到相同级别的比特可靠性以实现星座分集并提高解码性能。

公开(公告)号：US20100169722A1

公开(公告)日：2010-07-01

申请号：US12655521

申请日：2009-12-30

申请人： Ciou-Ping Wu ,  Pei-Kai Liao ,  Yu-Hao Chang ,  Yih-Shen Chen

发明人： Ciou-Ping Wu ,  Pei-Kai Liao ,  Yu-Hao Chang ,  Yih-Shen Chen

IPC分类号： G06F11/00

CPC分类号： H04L1/0066 ,  H04L1/0042 ,  H04L1/0071 ,  H04L27/34

摘要： A channel interleaver comprises a novel constellation-based permutation module. The channel interleaver first receives a plurality of sets of encoded bits generated from an FEC encoder. The encoded bits are distributed into multiple subblocks and each subblock comprises a plurality of adjacent bits. A subblock interleaver interleaves each subblock and outputs a plurality of interleaved bits. The constellation-based permutation module rearranges the interleaved bits and outputs a plurality of rearranged bits. The rearranged bits are supplied to a symbol mapper such that a plurality of consecutively encoded bits in the same set of the encoded bits generated from the FEC encoder is prevented to be mapped onto the same level of bit reliability of a modulation symbol. In addition, the plurality of adjacent bits of each subblock is also prevented to be mapped onto the same level of bit reliability to achieve constellation diversity and to improve decoding performance.

摘要翻译： 信道交织器包括新颖的基于星座的置换模块。 信道交织器首先接收从FEC编码器生成的多组编码比特。 编码的比特被分配到多个子块中，并且每个子块包括多个相邻的比特。 子块交织器交织每个子块并输出多个交织比特。 基于星座的置换模块重新排列交织的比特并输出多个重新排列的比特。 重新排列的比特被提供给符号映射器，使得从FEC编码器生成的同一组编码比特中的多个连续编码比特被阻止被映射到调制符号的相同级别的比特可靠性。 此外，还防止了每个子块的多个相邻位被映射到相同级别的比特可靠性以实现星座分集并提高解码性能。

公开(公告)号：US08619673B2

公开(公告)日：2013-12-31

申请号：US12803832

申请日：2010-07-06

申请人： Yu-Hao Chang ,  Yih-Shen Chen ,  Pei-Kai Liao

发明人： Yu-Hao Chang ,  Yih-Shen Chen ,  Pei-Kai Liao

IPC分类号： H04W4/00 ,  H04W36/00

CPC分类号： H04W48/20

摘要： Two preamble partition schemes are provided for flexible network deployment and efficient utilization of limited cell identification resources in a wireless network. In a soft partition scheme, the entire preamble sequences are partitioned into several configurable non-overlapping subsets, and each subset is associated with a corresponding cell type. In a hybrid partition scheme, a combination of fixed and configurable subsets is used for preamble partition. The partitioning information is carried in a broadcasting channel broadcasted from base stations to mobile stations. In one embodiment, after a mobile station performs scanning and synchronization with a first base station, it derives the cell type of the first base station from cell identification and partitioning information. The mobile station completes ranging and network entry with the first base station if the cell type is preferred, and starts to perform scanning and synchronization with a second base station if the cell type is non-preferred.

摘要翻译： 提供两个前导码分区方案用于无线网络中的有限小区标识资源的灵活网络部署和有效利用。 在软分区方案中，将整个前导码序列划分成若干可配置的非重叠子集，并且每个子集与相应的小区类型相关联。 在混合分区方案中，固定和可配置子集的组合用于前导码分区。 分区信息在从基站广播的广播信道中携带到移动台。 在一个实施例中，在移动台与第一基站执行扫描和同步之后，它从小区识别和分区信息中导出第一基站的小区类型。 如果小区类型是优选的，则移动台完成与第一基站的测距和网络入口，并且如果小区类型是不优选的，则开始执行与第二基站的扫描和同步。

公开(公告)号：US20110007690A1

公开(公告)日：2011-01-13

申请号：US12803832

申请日：2010-07-06

申请人： Yu-Hao Chang ,  Yih-Shen Chen ,  Pei-Kai Liao

发明人： Yu-Hao Chang ,  Yih-Shen Chen ,  Pei-Kai Liao

IPC分类号： H04W40/00

CPC分类号： H04W48/20

摘要： Two preamble partition schemes are provided for flexible network deployment and efficient utilization of limited cell identification resources in a wireless network. In a soft partition scheme, the entire preamble sequences are partitioned into several configurable non-overlapping subsets, and each subset is associated with a corresponding cell type. In a hybrid partition scheme, a combination of fixed and configurable subsets is used for preamble partition. The partitioning information is carried in a broadcasting channel broadcasted from base stations to mobile stations. In one embodiment, after a mobile station performs scanning and synchronization with a first base station, it derives the cell type of the first base station from cell identification and partitioning information. The mobile station completes ranging and network entry with the first base station if the cell type is preferred, and starts to perform scanning and synchronization with a second base station if the cell type is non-preferred.

摘要翻译： 提供两个前导码分区方案用于无线网络中的有限小区标识资源的灵活网络部署和有效利用。 在软分区方案中，将整个前导码序列划分成若干可配置的非重叠子集，并且每个子集与相应的小区类型相关联。 在混合分区方案中，固定和可配置子集的组合用于前导码分区。 分区信息在从基站广播的广播信道中携带到移动台。 在一个实施例中，在移动台与第一基站执行扫描和同步之后，它从小区识别和分区信息中导出第一基站的小区类型。 如果小区类型是优选的，则移动台完成与第一基站的测距和网络入口，并且如果小区类型是不优选的，则开始执行与第二基站的扫描和同步。

公开(公告)号：US08923126B2

公开(公告)日：2014-12-30

申请号：US13164324

申请日：2011-06-20

申请人： Ciou-Ping Wu ,  Chien-Hwa Hwang ,  Yu-Hao Chang

发明人： Ciou-Ping Wu ,  Chien-Hwa Hwang ,  Yu-Hao Chang

IPC分类号： H04B7/204

CPC分类号： H04L5/0032 ,  H04B15/00 ,  H04L1/1861 ,  H04L5/0053 ,  H04L27/2601 ,  H04W24/02 ,  H04W72/1289

摘要： A communications apparatus is provided. A controller module generates a suggested sub-frame pattern describing suggested arrangement of one or more almost blank sub-frame(s) in one or more frame(s) and schedules control signal and/or data transmissions according to the suggested sub-frame pattern. A transceiver module transmits at least a first signal carrying information regarding the suggested sub-frame pattern to a peer communications apparatus. The peer communications apparatus does not schedule data transmissions in the almost blank sub-frame(s).

摘要翻译： 提供一种通信装置。 控制器模块产生描述在一个或多个帧中的一个或多个几乎空白子帧的建议排列的建议子帧模式，并且根据建议的子帧模式调度控制信号和/或数据传输 。 收发器模块至少将携带关于所建议的子帧模式的信息的第一信号发送到对等通信装置。 对等通信装置不调度几乎空白的子帧中的数据传输。

公开(公告)号：US20110310830A1

公开(公告)日：2011-12-22

申请号：US13164324

申请日：2011-06-20

申请人： Ciou-Ping Wu ,  Chien-Hwa Hwang ,  Yu-Hao Chang

发明人： Ciou-Ping Wu ,  Chien-Hwa Hwang ,  Yu-Hao Chang

IPC分类号： H04W72/04 ,  H04B15/00

CPC分类号： H04L5/0032 ,  H04B15/00 ,  H04L1/1861 ,  H04L5/0053 ,  H04L27/2601 ,  H04W24/02 ,  H04W72/1289

摘要： A communication apparatus is provided. A controller module generates a suggested sub-frame pattern describing suggested arrangement of one or more almost blank sub-frame(s) in one or more frame(s) and schedules control signal and/or data transmissions according to the suggested sub-frame pattern. A radio frequency module transmits at least a first signal carrying information regarding the suggested sub-frame pattern to a peer communications apparatus. The peer communications apparatus does not schedule data transmissions in the almost blank sub-frame(s).

摘要翻译： 提供一种通信装置。 控制器模块产生描述在一个或多个帧中的一个或多个几乎空白子帧的建议排列的建议子帧模式，并且根据建议的子帧模式调度控制信号和/或数据传输 。 无线电频率模块至少将携带关于所建议的子帧模式的信息的第一信号发送到对等通信装置。 对等通信装置不调度几乎空白的子帧中的数据传输。

公开(公告)号：US20100246508A1

公开(公告)日：2010-09-30

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： H04W72/04

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。

公开(公告)号：US20100165942A1

公开(公告)日：2010-07-01

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： H04W88/16 ,  H04W72/04 ,  H04L27/28

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。