公开(公告)号：US08437295B2

公开(公告)日：2013-05-07

申请号：US12740080

申请日：2008-10-30

申请人： Dirk Gerstenberger ,  Johan Bergman ,  Christer Edholm ,  Jose Luis Pradas ,  Stefan Wager ,  Yi-Pin Eric Wang

发明人： Dirk Gerstenberger ,  Johan Bergman ,  Christer Edholm ,  Jose Luis Pradas ,  Stefan Wager ,  Yi-Pin Eric Wang

IPC分类号： H04W72/04

CPC分类号： H04W74/006 ,  H04W74/0833 ,  H04W74/0866

摘要： The present invention relates to fast random access methods and arrangements for the enhanced uplink dedicated channel of E-UTRAN (Evolved Universal terrestrial radio access network). A user equipment (UE) being in a low activity state sends a random access request comprising a preamble on a physical random access channel (PRACH) to a NodeB. The NodeB receives the request and sends in response to the received random access request a response comprising information associated with detection of the preamble on an acquisition indicator channel (AICH). The response comprises further in an extension of the AICH an indication of an action to be taken by the UE. In an embodiment of the present invention the action is to access the E-DCH and the response comprises configuration parameters to the E-DCH.

摘要翻译： 本发明涉及用于E-UTRAN（演进通用陆地无线电接入网络）的增强型上行链路专用信道的快速随机接入方法和装置。 处于低活动状态的用户设备（UE）将物理随机接入信道（PRACH）上的前导码的随机接入请求发送到节点B。 节点B接收请求并响应于接收到的随机接入请求发送包括与获取指示符信道（AICH）上的前导码的检测相关联的信息的响应。 该响应在AICH的扩展中进一步包括UE要采取的动作的指示。 在本发明的一个实施例中，动作是访问E-DCH，响应包括对E-DCH的配置参数。

公开(公告)号：US20130028309A1

公开(公告)日：2013-01-31

申请号：US13194772

申请日：2011-07-29

申请人： Chester Park ,  Yi-Pin Eric Wang

发明人： Chester Park ,  Yi-Pin Eric Wang

IPC分类号： H04B17/00

CPC分类号： H04L1/0015 ,  H04B7/0473 ,  H04B17/336 ,  H04L1/20 ,  H04L25/03923 ,  H04L25/03929

摘要： Conventional mode adaptation does not account for the gain imbalance between channels for measurement and for data reception. Therefore, the precoder, which is selected based on the measurement channel, may not be the optimal precoder for the data reception channel. By maintaining relative SINR ordering between transmission modes, a receiver may select the transmission mode for a transmitter that maximizes the actual throughput even in the presence of inter-antenna gain increase or decrease.

摘要翻译： 常规模式适配不考虑用于测量和数据接收的通道之间的增益不平衡。 因此，基于测量信道选择的预编码器可能不是数据接收信道的最佳预编码器。 通过维持传输模式之间的相对SINR排序，接收机可以选择发射机的传输模式，即使在存在天线间增益增加或减小的情况下也能使实际吞吐量最大化。

公开(公告)号：US08271858B2

公开(公告)日：2012-09-18

申请号：US12553324

申请日：2009-09-03

申请人： Yi-Pin Eric Wang ,  Jung-Fu Cheng

发明人： Yi-Pin Eric Wang ,  Jung-Fu Cheng

IPC分类号： H03M13/00

CPC分类号： H04L1/005

摘要： Techniques for generating soft values for parity bits in a convolutional decoding process are disclosed. An exemplary method comprises, for each of at least one iteration in at least one soft-input soft-output decoder, calculating intermediate probability values for each possible transition between a first plurality of candidate decoder states at a first time and a second plurality of candidate decoder states at a second time. Two or more partial sums are then computed from the intermediate probability values, wherein the partial sums correspond to possible combinations of two or more systematic bits, two or more parity bits, or at least one systematic bit and at least one parity bit. Soft values, such as log-likelihood values, are then estimated for each of at least one systematic bit and at least one parity bit of the received communications data corresponding to the interval between the first and second times, based on the partial sums.

摘要翻译： 公开了在卷积解码过程中产生用于奇偶校验位的软值的技术。 一种示例性方法包括对于至少一个软输入软输出解码器中的至少一次迭代中的每一个，为第一时间的第一多个候选解码器状态和第二多个候选者之间的每个可能的转换计算中间概率值 解码器第二次状态。 然后从中间概率值计算两个或多个部分和，其中部分和对应于两个或多个系统位，两个或更多个奇偶校验位或至少一个系统位和至少一个奇偶校验位的可能组合。 然后，基于部分和，针对对应于第一和第二时间之间的间隔的接收到的通信数据的至少一个系统位和至少一个奇偶校验位中的每一个估计诸如对数似然值的软值。

公开(公告)号：US20110261872A1

公开(公告)日：2011-10-27

申请号：US12764247

申请日：2010-04-21

申请人： Yi-Pin Eric Wang ,  Jung-Fu Cheng

发明人： Yi-Pin Eric Wang ,  Jung-Fu Cheng

IPC分类号： H04B17/00

CPC分类号： H04L27/2647 ,  H04J11/004 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/0025 ,  H04L5/0046 ,  H04L25/0204 ,  H04L25/0224 ,  H04L27/2636

摘要： A receive signal processor jointly detects two or more symbols in a signal-of-interest in the presence of one or more other MIMO signals. The signal-to-interference-plus-noise ratio for each signal-of-interest is determined by computing per-subcarrier signal-to-interference-plus-noise ratios for a plurality of subcarriers allocated to the signals-of-interest, and computing a total signal-to-interference-plus-noise ratio for the subcarriers based on the per-subcarrier signal-to-interference-plus-noise ratios of the subcarriers. A controller determines one or more transmission formats for uplink transmissions based on the signal-to-interference-plus-noise ratios. The process of computing per-subcarrier signal-to-interference-plus-noise ratio reflects the amount of MIMO interference already cancelled or still remaining in the signal arriving at the joint detector.

摘要翻译： 接收信号处理器在存在一个或多个其它MIMO信号的情况下联合检测感兴趣的信号中的两个或多个符号。 通过对分配给感兴趣信号的多个子载波计算每副载波信号与干扰加噪声比来确定每个感兴趣信号的信号与干扰加噪声比，以及 基于子载波的每副载波信号与干扰加噪声比，计算子载波的总信噪比加噪声比。 控制器基于信号与干扰加噪声比确定用于上行链路传输的一种或多种传输格式。 计算每子载波信号与干扰加噪声比的过程反映已经消除或仍然存在于到达联合检测器的信号中的MIMO干扰量。

公开(公告)号：US20110243283A1

公开(公告)日：2011-10-06

申请号：US12752471

申请日：2010-04-01

申请人： Yi-Pin Eric Wang ,  Jung-Fu Cheng

发明人： Yi-Pin Eric Wang ,  Jung-Fu Cheng

IPC分类号： H04B1/10

CPC分类号： H04L27/2647 ,  H04B17/336 ,  H04L5/0046 ,  H04L5/0091 ,  H04L27/2636

摘要： A receive signal processor jointly detects a signal-of-interest with one or more other signals. The signal-to-interference-plus-noise ratio for the signal-of-interest is determined by computing per-subcarrier signal-to-interference-plus-noise ratios for a plurality of subcarriers carrying the signal-of-interest, computing per-subcarrier capacities for the subcarriers based on the per subcarrier signal to interference ratios, and computing a total signal-to-interference-plus-noise ratio for the subcarriers based on the per-subcarrier capacities of the subcarriers.

摘要翻译： 接收信号处理器通过一个或多个其它信号共同检测感兴趣的信号。 用于感兴趣信号的信号与干扰加噪声比通过计算携带感兴趣信号的多个子载波的每副载波信号与干扰加噪声比来确定 基于每个子载波信号与干扰比的子载波的子载波容量，以及基于子载波的每副载波容量计算副载波的总信噪比加噪声比。

公开(公告)号：US07924754B2

公开(公告)日：2011-04-12

申请号：US12502506

申请日：2009-07-14

申请人： Johan Bergman ,  Yi-Pin Eric Wang ,  Erik Larsson

发明人： Johan Bergman ,  Yi-Pin Eric Wang ,  Erik Larsson

IPC分类号： H04B7/00

CPC分类号： H04L1/0057 ,  H04L1/0073 ,  H04L1/1607 ,  H04L2001/125

摘要： Acknowledgment signaling in a multiple carrier environment is enabled with a multiple carrier codebook having code words that jointly encode acknowledgment for at least two carriers. For an example embodiment, there is a method in a remote terminal for acknowledgment uplink signaling in a multiple-carrier mode. First, a code word is determined that jointly encodes acknowledgment signaling for at least two carriers from a multiple carrier codebook that is stored in the remote terminal. The multiple carrier codebook includes eight code words that are defined to have a single carrier codebook as a sub-codebook of the multiple carrier codebook, each code word of the eight code words having a length of ten. The multiple carrier codebook achieves a minimum Hamming distance of four among the eight code words. Second, an uplink signaling message that includes the determined code word is transmitted from the remote terminal to a wireless network node.

摘要翻译： 具有多载波码本的多载波环境中的确认信令被启用，所述多载波码本具有对至少两个载波共同编码确认的码字。 对于示例实施例，在远程终端中存在用于多载波模式中的确认上行链路信令的方法。 首先，确定从存储在远程终端中的多载波码本共同编码至少两个载波的确认信令的码字。 多载波码本包括被定义为具有单个载波码本作为多载波码本的子码本的八个码字，八个码字的长度为十的每个码字。 多载波码本在八个码字中达到最小汉明距离四。 其次，将包含所确定的码字的上行链路信令消息从远程终端发送到无线网络节点。

公开(公告)号：US07920619B2

公开(公告)日：2011-04-05

申请号：US11739924

申请日：2007-04-25

申请人： Yi-Pin Eric Wang ,  Gregory E. Bottomley ,  Douglas A. Cairns

发明人： Yi-Pin Eric Wang ,  Gregory E. Bottomley ,  Douglas A. Cairns

IPC分类号： H04B1/00

CPC分类号： H04L25/024 ,  H04B1/7105 ,  H04B2201/709727

摘要： A method and apparatus for reducing the complexity of waveform correlation computations used by a multicode receiver is described herein. One exemplary multicode receiver includes a despreading unit, channel estimator, and waveform correlation calculator. The despreading unit despreads a received multicode signal to generate despread symbols. The channel estimator estimates channel coefficients associated with the despread symbols. The waveform correlation calculator determines waveform correlations between the transmitted symbols in successive processing windows that span two or more symbol periods and that overlap in time. To reduce the computational complexity associated with computing waveform correlations, the calculator may reuse channel coefficients and/or net channel correlations for multiple symbol periods and/or processing windows. The calculator may also reduce complexity by reusing one or more waveform correlations from a previous processing window as waveform correlations for one or more subsequent processing windows and/or by exploiting the Hermitian symmetry of the waveform correlation matrix.

摘要翻译： 这里描述了一种降低多码接收机使用的波形相关计算的复杂度的方法和装置。 一个示例性多码接收机包括解扩单元，信道估计器和波形相关计算器。 解扩单元对接收到的多码信号进行解扩，以产生解扩符号。 信道估计器估计与解扩符号相关联的信道系数。 波形相关计算器确定跨越两个或多个符号周期并且在时间上重叠的连续处理窗口中的发送符号之间的波形相关性。 为了减少与计算波形相关性相关联的计算复杂度，计算器可以重用多个符号周期和/或处理窗口的信道系数和/或净信道相关性。 计算器还可以通过将来自先前处理窗口的一个或多个波形相关作为一个或多个后续处理窗口的波形相关性和/或通过利用波形相关矩阵的埃米特对称来重新降低复杂度。

公开(公告)号：US20110055667A1

公开(公告)日：2011-03-03

申请号：US12553324

申请日：2009-09-03

申请人： Yi-Pin Eric Wang ,  Jung-Fu Cheng

发明人： Yi-Pin Eric Wang ,  Jung-Fu Cheng

IPC分类号： H03M13/05 ,  G06F11/10

CPC分类号： H04L1/005

摘要： Techniques for generating soft values for parity bits in a convolutional decoding process are disclosed. An exemplary method comprises, for each of at least one iteration in at least one soft-input soft-output decoder, calculating intermediate probability values for each possible transition between a first plurality of candidate decoder states at a first time and a second plurality of candidate decoder states at a second time. Two or more partial sums are then computed from the intermediate probability values, wherein the partial sums correspond to possible combinations of two or more systematic bits, two or more parity bits, or at least one systematic bit and at least one parity bit. Soft values, such as log-likelihood values, are then estimated for each of at least one systematic bit and at least one parity bit of the received communications data corresponding to the interval between the first and second times, based on the partial sums.

摘要翻译： 公开了在卷积解码过程中产生用于奇偶校验位的软值的技术。 一种示例性方法包括对于至少一个软输入软输出解码器中的至少一次迭代中的每一个，为第一时间的第一多个候选解码器状态和第二多个候选者之间的每个可能的转换计算中间概率值 解码器第二次状态。 然后从中间概率值计算两个或多个部分和，其中部分和对应于两个或多个系统位，两个或更多个奇偶校验位或至少一个系统位和至少一个奇偶校验位的可能组合。 然后，基于部分和，针对对应于第一和第二时间之间的间隔的接收到的通信数据的至少一个系统位和至少一个奇偶校验位中的每一个估计诸如对数似然值的软值。

公开(公告)号：US20090185603A1

公开(公告)日：2009-07-23

申请号：US12016608

申请日：2008-01-18

申请人： Gregory E. Bottomley ,  Yi-Pin Eric Wang

发明人： Gregory E. Bottomley ,  Yi-Pin Eric Wang

IPC分类号： H04B1/00

CPC分类号： H04B1/712 ,  H04B2201/709727

摘要： The teachings presented herein improve the processing of individual signals of interest included in a received composite signal by computing combining weights and/or signal quality estimates for each signal of interest, e.g., for linear equalization, based on either shared or non-shared correlation estimates. As a non-limiting advantage, the use of shared correlation estimates reduces computational loading as compared to the processing load that would be needed for computing non-shared correlation estimates for all signals of interest. As a further non-limiting advantage, the conditional use of shared and non-shared correlation estimates provides for the use of non-shared correlation estimates where signal characteristic(s) of one or more of the signals of interest warrant such usage, e.g., for one or more high-rate signals of interest.

摘要翻译： 本文提出的教导通过基于共享或非共享相关估计来计算每个感兴趣信号的组合权重和/或信号质量估计，例如用于线性均衡，来改进包括在接收到的复合信号中的感兴趣的各个信号的处理 。 作为非限制性优点，与用于计算所有感兴趣的信号的非共享相关估计所需的处理负载相比，共享相关估计的使用减少了计算负载。 作为进一步的非限制性优点，共享和非共享相关估计的条件使用提供了使用非共享相关估计，其中一个或多个感兴趣信号的信号特征允许这种使用，例如， 用于一个或多个感兴趣的高速率信号。

公开(公告)号：US20080267261A1

公开(公告)日：2008-10-30

申请号：US11739924

申请日：2007-04-25

申请人： Yi-Pin Eric Wang ,  Gregory E. Bottomley ,  Douglas A. Cairns

发明人： Yi-Pin Eric Wang ,  Gregory E. Bottomley ,  Douglas A. Cairns

IPC分类号： H04B1/69

CPC分类号： H04L25/024 ,  H04B1/7105 ,  H04B2201/709727

摘要： A method and apparatus for reducing the complexity of waveform correlation computations used by a multicode receiver is described herein. One exemplary multicode receiver includes a despreading unit, channel estimator, and waveform correlation calculator. The despreading unit despreads a received multicode signal to generate despread symbols. The channel estimator estimates channel coefficients associated with the despread symbols. The waveform correlation calculator determines waveform correlations between the transmitted symbols in successive processing windows that span two or more symbol periods and that overlap in time. To reduce the computational complexity associated with computing waveform correlations, the calculator may reuse channel coefficients and/or net channel correlations for multiple symbol periods and/or processing windows. The calculator may also reduce complexity by reusing one or more waveform correlations from a previous processing window as waveform correlations for one or more subsequent processing windows and/or by exploiting the Hermitian symmetry of the waveform correlation matrix.

摘要翻译： 这里描述了一种降低多码接收机使用的波形相关计算的复杂度的方法和装置。 一个示例性多码接收机包括解扩单元，信道估计器和波形相关计算器。 解扩单元对接收到的多码信号进行解扩，以产生解扩符号。 信道估计器估计与解扩符号相关联的信道系数。 波形相关计算器确定跨越两个或多个符号周期并且在时间上重叠的连续处理窗口中的发送符号之间的波形相关性。 为了减少与计算波形相关性相关联的计算复杂度，计算器可以重用多个符号周期和/或处理窗口的信道系数和/或净信道相关性。 计算器还可以通过将来自先前处理窗口的一个或多个波形相关作为一个或多个后续处理窗口的波形相关性和/或通过利用波形相关矩阵的埃米特对称来重新降低复杂度。