公开(公告)号：US07697948B2

公开(公告)日：2010-04-13

申请号：US11577540

申请日：2004-10-29

申请人： Lei Wan ,  Magnus Almgren ,  Shiau-He Shawn Tsai

发明人： Lei Wan ,  Magnus Almgren ,  Shiau-He Shawn Tsai

IPC分类号： H04B7/00 ,  H04Q7/20

CPC分类号： H04W28/18 ,  H04L1/1812 ,  H04L1/20 ,  H04W24/10 ,  H04W72/00 ,  H04W72/085

摘要： A method of adapting resource allocation parameters to reach one or more quality targets with improved accuracy is proposed. New information measurements based on the so-called mutual information, preferably at block-level, are introduced. The MI-based information measurements of a previous transmission, the channel prediction of a subsequent transmission and one or more quality requirements, are used to determine the amount and type of resources, e.g. time, frequency and power resources, that are to be used for the subsequent transmission. The resource allocation can for example comprise power allocation and/or link adaptation and the invention enables an advantageous implementation with cooperative link-adaptation and power allocation. The proposed method is useful in connection with ARQ/HARQ retransmissions.

摘要翻译： 提出了一种使资源分配参数适应达到一个或多个质量目标的方法，其精度提高。 引入了基于所谓的互信息的新信息测量，优选在块级。 先前传输的基于MI的信息测量，后续传输的信道预测和一个或多个质量要求被用于确定资源的数量和类型，例如， 时间，频率和功率资源，用于后续传输。 资源分配可以例如包括功率分配和/或链路适配，并且本发明使得能够利用协作链路适配和功率分配实现有利的实现。 所提出的方法在ARQ / HARQ重传中是有用的。

公开(公告)号：US07869546B2

公开(公告)日：2011-01-11

申请号：US11067874

申请日：2005-02-28

申请人： Shiau-He Shawn Tsai

发明人： Shiau-He Shawn Tsai

IPC分类号： H03D1/00

CPC分类号： H04J13/0048 ,  G06F17/156

摘要： A symbol sequence contained in a received signal comprising a cyclic convolution of a Walsh code multiplexed signal and a channel impulse response of a multipath channel is detected using Walsh Hadamard domain equalization techniques. The method comprises converting the received signal and the channel impulse response of the multipath channel from the time domain to the WHT domain, and determining the symbol sequence based on equalizing the received signal in the WHT domain using WHT spectra of the channel impulse response to remove inter-symbol interference from the received signal due to cross-correlation between Walsh codes.

摘要翻译： 使用Walsh Hadamard域均衡技术来检测包含沃尔什码复用信号的循环卷积和多径信道的信道脉冲响应的接收信号中的符号序列。 该方法包括将接收的信号和多径信道的信道脉冲响应从时域转换到WHT域，并且基于使用信道脉冲响应的WHT频谱来均衡WHT域中的接收信号来确定符号序列以去除 由于沃尔什码之间的互相关，来自接收信号的符号间干扰。

公开(公告)号：US20090109907A1

公开(公告)日：2009-04-30

申请号：US12053323

申请日：2008-03-21

申请人： Shiau-He Shawn Tsai ,  Jonas L. Wiorek

发明人： Shiau-He Shawn Tsai ,  Jonas L. Wiorek

IPC分类号： H04Q7/00

CPC分类号： H04L5/0037 ,  H04J4/00 ,  H04L5/0007 ,  H04W72/1268

摘要： The technology in this application multiplexes transmission associated with multiple users onto the same unsolicited grant service (UGS) radio resource(s) in a packet-based, radio communications system. Normally, the radio resources in a packet-based communications system are dynamically scheduled in response to radio resource requests associated with specific user devices, and the scheduled communications are designed not to use the same radio resource at the same time. However, an unsolicited grant of radio resources for communication between multiple user devices and the packet-based communications system is also established. The communications between those multiple user devices and the packet-based communications system use at least some of the same radio resources associated with the unsolicited grant at the same time. Because of this at least partial radio resource overlap/collision, each of the multiple user's data to be transmitted via the UGS is associated with a user-specific radio resource pattern. A user's radio resource pattern permits a radio receiver to extract that user's data from the received UGS signal that include multiple user transmissions.

摘要翻译： 该应用中的技术将与多个用户相关联的传输复用到基于分组的无线电通信系统中的相同的主动授权服务（UGS）无线电资源。 通常，基于分组的通信系统中的无线电资源是响应于与特定用户设备相关联的无线电资源请求被动态地调度的，并且调度的通信被设计成不同时使用相同的无线电资源。 然而，还建立了用于多用户设备和基于分组的通信系统之间的通信的无线电资源的非请求授权。 这些多用户设备和基于分组的通信系统之间的通信同时使用与非请求授权相关联的至少一些相同的无线电资源。 由于至少部分无线电资源重叠/冲突，将经由UGS发送的多个用户的数据中的每一个与用户特定的无线电资源模式相关联。 用户的无线电资源模式允许无线电接收机从接收的包括多个用户传输的UGS信号中提取该用户的数据。

公开(公告)号：US20090103659A1

公开(公告)日：2009-04-23

申请号：US12140956

申请日：2008-06-17

申请人： Jason Chen ,  Shiau-He Shawn Tsai

发明人： Jason Chen ,  Shiau-He Shawn Tsai

IPC分类号： H03D1/00

CPC分类号： H03M13/3938 ,  H03M13/2996 ,  H03M13/413

摘要： A decoder is provided which is configured to operate upon an input encoded sequence using a wrap around Viterbi procedure, and a decoding method which employs the decoder. The decoder/method is configured to output a selected path as a decode sequence, and to avoid storing, for a current iteration of the wrap-around Viterbi procedure other than a first iteration, a best path up to the current iteration.

摘要翻译： 提供了一种解码器，其被配置为使用包绕维特比程序的输入编码序列进行操作，以及采用解码器的解码方法。 解码器/方法被配置为输出所选择的路径作为解码序列，并且为了避免对当前迭代之外的环绕维特比过程的当前迭代存储直到当前迭代的最佳路径。

公开(公告)号：US08477697B2

公开(公告)日：2013-07-02

申请号：US12268692

申请日：2008-11-11

申请人： Shiau-He Shawn Tsai ,  Per Ernström

发明人： Shiau-He Shawn Tsai ,  Per Ernström

IPC分类号： H04W4/00 ,  H04L12/28 ,  H04L12/43 ,  H04J4/00 ,  H04J3/16 ,  H04B7/212

CPC分类号： H04W72/04 ,  H04B7/2656 ,  H04W72/048

摘要： Mechanisms to interlace multiple legacy frames to enhance radio resource utilization are described. Also described are mechanisms to modify a low-latency frame structure to appear as legacy frames. In one aspect, partially blanked-out legacy frames are interlaced with time offsets so that they complement each other to leave no idle system time. To a legacy user equipment, the interlaced frame appears as normal legacy frames used by multiple legacy cells. In another aspect, the low-latency frame is modified to appear as an interlaced frame. Again to the legacy user equipment, the low-latency frame appears as legacy frames from multiple legacy cells. To the low-latency user equipment, the modified low-latency frame still appear as normal low-latency frame. In this manner, radio resources of the legacy base stations are optimally utilized. Also, low-latency base stations are enabled to provide serves to the legacy user equipments without wasting radio resources.

公开(公告)号：US08219896B2

公开(公告)日：2012-07-10

申请号：US12140956

申请日：2008-06-17

申请人： Jason Chen ,  Shiau-He Shawn Tsai

发明人： Jason Chen ,  Shiau-He Shawn Tsai

IPC分类号： H03M13/03

CPC分类号： H03M13/3938 ,  H03M13/2996 ,  H03M13/413

摘要： A decoder is provided which is configured to operate upon an input encoded sequence using a wrap around Viterbi procedure, and a decoding method which employs the decoder. The decoder/method is configured to output a selected path as a decode sequence, and to avoid storing, for a current iteration of the wrap-around Viterbi procedure other than a first iteration, a best path up to the current iteration.

摘要翻译： 提供了一种解码器，其被配置为使用包绕维特比程序的输入编码序列进行操作，以及采用解码器的解码方法。 解码器/方法被配置为输出所选择的路径作为解码序列，并且为了避免对当前迭代之外的环绕维特比过程的当前迭代存储直到当前迭代的最佳路径。

公开(公告)号：US20100214969A1

公开(公告)日：2010-08-26

申请号：US12598676

申请日：2007-05-03

申请人： Anders Lamm ,  Stefan Lindgren ,  Shiau-He Shawn Tsai

发明人： Anders Lamm ,  Stefan Lindgren ,  Shiau-He Shawn Tsai

IPC分类号： H04W52/02

CPC分类号： H04W52/0216 ,  H04W68/00 ,  Y02D70/146

摘要： A base station for use in a WiMAX system comprise means for sending a wake-up signal to an idle terminal to indicate to the terminal that a paging signal is about to be sent to the terminal. The terminal receives and interprets the wake-up signal and prepares itself for receiving the paging signal. This saves battery power in the terminal since the wake-up signal can be detected more easily than the paging signal. The base station, in the mean time, can reduce its paging message traffic and saves overhead in downlink transmission.

摘要翻译： 用于WiMAX系统的基站包括用于向空闲终端发送唤醒信号以向终端指示寻呼信号即将被发送到终端的装置。 终端接收并解释唤醒信号，并准备好接收寻呼信号。 由于唤醒信号比寻呼信号更容易被检测，因此节省了终端中的电池电力。 同时，基站可以减少其寻呼消息流量，节省下行链路传输的开销。

公开(公告)号：US07738903B2

公开(公告)日：2010-06-15

申请号：US11372575

申请日：2006-03-10

申请人： Wanshi Chen ,  Anthony C. K. Soong ,  Shiau-He Shawn Tsai ,  Rath Vannithamby

发明人： Wanshi Chen ,  Anthony C. K. Soong ,  Shiau-He Shawn Tsai ,  Rath Vannithamby

IPC分类号： H04B7/00

CPC分类号： H04W52/16 ,  H04W52/50

摘要： A method and apparatus provide for setting the initial transmit power of secondary reverse link carriers used by mobile stations in conjunction with primary reverse link carriers. In one or more embodiments, a mobile station sets the initial transmit power of a secondary reverse link carrier relative to the transmit power of the primary reverse link carrier as a function of initialization transmit power information transmitted to the mobile station, which directly or indirectly considers reverse link loading information. Additional considerations may include differences in active sets associated with the primary and secondary reverse link carriers and/or sector switching activity of the mobile station.

摘要翻译： 一种方法和装置提供用于设置移动台与主反向链路载波一起使用的次级反向链路载波的初始发射功率。 在一个或多个实施例中，移动站相对于主反向链路载波的发射功率设置次级反向链路载波的初始发射功率，作为发送到移动台的直接或间接考虑的初始化发射功率信息的函数 反向链接加载信息。 附加考虑可以包括与主要和次要反向链路载波相关联的活动集和/或移动台的扇区切换活动的差异。

公开(公告)号：US07313167B2

公开(公告)日：2007-12-25

申请号：US10260650

申请日：2002-09-30

申请人： Young C. Yoon ,  Shiau-He Shawn Tsai

发明人： Young C. Yoon ,  Shiau-He Shawn Tsai

IPC分类号： H04B1/707 ,  H04B1/10 ,  H04Q1/20

CPC分类号： H04B1/7097 ,  H04B17/336 ,  H04L1/206 ,  H04W52/24

摘要： An improved approach to noise estimation permits, for example, tighter closed-loop power control in a wireless communication network with attendant improvements in transmit power efficiency and network capacity. In an exemplary embodiment, the received signal-to-noise ratio (SNR) of a data signal is estimated based on noise samples obtained from one or more other signals received in association with the data signal. In general, these associated signals are characterized by the receiver's ability to extract like valued samples from them, such that pairs of these like valued signal samples may be subtracted, thereby canceling their deterministic signal components and leaving only difference values representative of the non-deterministic noise components of the signal samples. Obtaining difference values from more than one associated signal increases the sample size of difference values used in noise estimation, thereby improving the statistical basis for noise estimation and, therefore, the accuracy of SNR estimation.

摘要翻译： 改进的噪声估计方法允许例如在无线通信网络中更紧密的闭环功率控制，同时提高发射功率效率和网络容量。 在示例性实施例中，基于从与数据信号相关联接收的一个或多个其它信号获得的噪声样本来估计数据信号的接收信噪比（SNR）。 通常，这些相关联的信号的特征在于接收机从其中提取类似值样本的能力，使得可以减去这些像值信号样本的对，从而消除其确定性信号分量，并且仅留下代表非确定性的差值 信号样本的噪声分量。 从多个相关联信号中获取差值增加了噪声估计中使用的差值的采样大小，从而改善了噪声估计的统计基础，从而提高了SNR估计的准确性。

公开(公告)号：US08717979B2

公开(公告)日：2014-05-06

申请号：US12053323

申请日：2008-03-21

申请人： Shiau-He Shawn Tsai ,  Jonas L. Wiorek

发明人： Shiau-He Shawn Tsai ,  Jonas L. Wiorek

IPC分类号： H04W4/00 ,  H04J3/00 ,  H04J3/16 ,  H04B7/212

CPC分类号： H04L5/0037 ,  H04J4/00 ,  H04L5/0007 ,  H04W72/1268

摘要： The technology in this application multiplexes transmission associated with multiple users onto the same unsolicited grant service (UGS) radio resource(s) in a packet-based, radio communications system. Normally, the radio resources in a packet-based communications system are dynamically scheduled in response to radio resource requests associated with specific user devices, and the scheduled communications are designed not to use the same radio resource at the same time. However, an unsolicited grant of radio resources for communication between multiple user devices and the packet-based communications system is also established. The communications between those multiple user devices and the packet-based communications system use at least some of the same radio resources associated with the unsolicited grant at the same time. Because of this at least partial radio resource overlap/collision, each of the multiple user's data to be transmitted via the UGS is associated with a user-specific radio resource pattern. A user's radio resource pattern permits a radio receiver to extract that user's data from the received UGS signal that include multiple user transmissions.

摘要翻译： 该应用中的技术将与多个用户相关联的传输复用到基于分组的无线电通信系统中的相同的主动授权服务（UGS）无线电资源。 通常，基于分组的通信系统中的无线电资源是响应于与特定用户设备相关联的无线电资源请求被动态地调度的，并且调度的通信被设计成不同时使用相同的无线电资源。 然而，还建立了用于多用户设备和基于分组的通信系统之间的通信的无线电资源的非请求授权。 这些多用户设备和基于分组的通信系统之间的通信同时使用与非请求授权相关联的至少一些相同的无线电资源。 由于至少部分无线电资源重叠/冲突，将经由UGS发送的多个用户的数据中的每一个与用户特定的无线电资源模式相关联。 用户的无线电资源模式允许无线电接收机从接收的包括多个用户传输的UGS信号中提取该用户的数据。