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：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：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：US09467959B2

公开(公告)日：2016-10-11

申请号：US13435504

申请日：2012-03-30

申请人： Yih-Shen Chen ,  Per Johan Mikael Johansson ,  Chia-Chun Hsu ,  Pei-Kai Liao ,  Shiang-Jiun Lin

发明人： Yih-Shen Chen ,  Per Johan Mikael Johansson ,  Chia-Chun Hsu ,  Pei-Kai Liao ,  Shiang-Jiun Lin

IPC分类号： H04W56/00 ,  H04L5/00 ,  H04W28/06

CPC分类号： H04W56/0045 ,  H04L5/001 ,  H04W28/06

摘要： A method of managing multiple timing advance (TA) groups, maintaining multiple TA timers, and performing UL synchronization in a multi-carrier wireless system is provided. When a new component carrier (CC) is configured, it is assigned to a TA group having a TA group identifier. The TA groups are managed statically or dynamically. The TA group identifier is used to uniquely identify the TA group in the operations of uplink (UL) timing synchronization. Multiple TA timers are assigned to multiple TA groups. The TA timers may have different values for different TA group. Different embodiments of UL timing adjustments for multiple TA groups are provided.

摘要翻译： 提供了一种在多载波无线系统中管理多个定时提前（TA）组，维护多个TA定时器以及执行UL同步的方法。 当配置新的分量载波（CC）时，将其分配给具有TA组标识符的TA组。 TA组是静态或动态管理的。 TA组标识符用于在上行链路（UL）定时同步的操作中唯一地标识TA组。 多个TA定时器分配给多个TA组。 TA定时器对于不同的TA组可能具有不同的值。 提供了用于多个TA组的UL定时调整的不同实施例。

公开(公告)号：US08548082B2

公开(公告)日：2013-10-01

申请号：US12589449

申请日：2009-10-23

申请人： Pei-Kai Liao ,  Chih-Yuan Lin ,  Yih-Shen Chen

发明人： Pei-Kai Liao ,  Chih-Yuan Lin ,  Yih-Shen Chen

IPC分类号： H04B7/02

CPC分类号： H04L5/0023 ,  H04L1/0072 ,  H04L1/0631 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0094 ,  H04L25/0228

摘要： A contention-based multi-antenna access request transmission/receiving procedure in MIMO OFDM/OFDMA systems is provided to reduce access latency. A mobile station encodes and transmits an access request over a shared access channel using multiple transmitting antennas, while a base station receives and decodes a number of access requests using multiple receiving antennas. Each access request comprises an access indictor and an access message. In a first MIMO scheme, the mobile station transmits the access indicator as preambles, while the access message is encoded by SFBC/STBC to obtain spatial diversity. At the receive side, the access indicator is exploited as pilots for channel estimation. The access message is decoded using SFBC/STBC decoding algorithm. In a second MIMO scheme, the mobile station performs precoding/beamforming for each of the transmitting antenna to obtain beamforming gain, while the base station performs virtual beam matching based on the detection results of the access indicators.

摘要翻译： 提供MIMO OFDM / OFDMA系统中的基于竞争的多天线接入请求发送/接收过程以减少接入等待时间。 移动台通过使用多个发射天线的共享接入信道来编码和发送接入请求，而基站使用多个接收天线接收并解码多个接入请求。 每个访问请求包括访问指示符和访问消息。 在第一MIMO方案中，移动站将接入指示符作为前导码发送，而接入消息由SFBC / STBC编码以获得空间分集。 在接收端，接入指示器被用作信道估计的导频。 访问消息使用SFBC / STBC解码算法进行解码。 在第二MIMO方案中，移动台对于发射天线中的每一个执行预编码/波束成形，以获得波束成形增益，而基站基于访问指示符的检测结果执行虚拟波束匹配。

公开(公告)号：US08345623B2

公开(公告)日：2013-01-01

申请号：US12653360

申请日：2009-12-11

申请人： Yih-Shen Chen ,  Pei-Kai Liao

发明人： Yih-Shen Chen ,  Pei-Kai Liao

IPC分类号： H04Q7/00

CPC分类号： H04L27/2607 ,  H04L5/0007 ,  H04L5/0053 ,  H04L5/0073 ,  H04L27/2655 ,  H04W56/0005

摘要： A unified synchronous ranging channel is provided. The unified synchronous ranging channel has a ranging cyclic prefix length that is the same as a cyclic prefix length of a data channel. The unified synchronous ranging channel is used for one of initial ranging, handover ranging, and periodic ranging between a mobile station and a femto base station. In one embodiment, the synchronous ranging channel spans over a two-dimensional radio resource region having a first number of subcarriers along frequency domain, a second number of OFDM symbols along time domain, and a third number of time-domain repetition. At the transmit side, a ranging code sequence is generated by applying a fixed time-domain cyclic shift per OFDM symbol to a root sequence. At the receive side, the ranging code sequence is decoded by using a summation module, a likelihood-combining module, and a modified peak test module that normalizes a peak value.

摘要翻译： 提供统一的同步测距通道。 统一同步测距信道具有与数据信道的循环前缀长度相同的测距循环前缀长度。 统一的同步测距信道用于移动台和毫微微基站之间的初始测距，切换测距和周期性测距之一。 在一个实施例中，同步测距信道跨越具有沿频域的第一数量子载波的二维无线电资源区域，沿时域的第二数量的OFDM符号和第三数量的时域重复。 在发送侧，通过对根序列应用每OFDM符号的固定时域循环移位来生成测距码序列。 在接收侧，通过使用求和模块，似然合成模块和归一化峰值的修改峰值测试模块对测距代码序列进行解码。

公开(公告)号：US20120250520A1

公开(公告)日：2012-10-04

申请号：US13435504

申请日：2012-03-30

申请人： Yih-Shen Chen ,  Per Johan Mikael Johansson ,  Chia Chun Hsu ,  Pei-Kai Liao ,  Shiang-Jiun Lin

发明人： Yih-Shen Chen ,  Per Johan Mikael Johansson ,  Chia Chun Hsu ,  Pei-Kai Liao ,  Shiang-Jiun Lin

IPC分类号： H04W72/04 ,  H04W24/00

CPC分类号： H04W56/0045 ,  H04L5/001 ,  H04W28/06

摘要： A method of managing multiple timing advance (TA) groups, maintaining multiple TA timers, and performing UL synchronization in a multi-carrier wireless system is provided. When a new component carrier (CC) is configured, it is assigned to a TA group having a TA group identifier. The TA groups are managed statically or dynamically. The TA group identifier is used to uniquely identify the TA group in the operations of uplink (UL) timing synchronization. Multiple TA timers are assigned to multiple TA groups. The TA timers may have different values for different TA group. Different embodiments of UL timing adjustments for multiple TA groups are provided.

摘要翻译： 提供了一种在多载波无线系统中管理多个定时提前（TA）组，维护多个TA定时器以及执行UL同步的方法。 当配置新的分量载波（CC）时，将其分配给具有TA组标识符的TA组。 TA组是静态或动态管理的。 TA组标识符用于在上行链路（UL）定时同步的操作中唯一地标识TA组。 多个TA定时器分配给多个TA组。 TA定时器对于不同的TA组可能具有不同的值。 提供了用于多个TA组的UL定时调整的不同实施例。