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公开(公告)号：US09363002B2
公开(公告)日：2016-06-07
申请号：US13414932
申请日：2012-03-08
CPC分类号： H04B7/0626 , H04B7/022 , H04B7/0434 , H04B7/0452 , H04B7/0663 , H04B17/373 , H04L1/0019 , H04L25/03898 , H04L25/03949
摘要： A system and method in which a base station treats the Channel State Information (CSI) from wireless terminals as only partially-stale, and exploits this partially-stale CSI to predict the current channel from old estimates of the channel. The predicted channel is then used to design a precoder. The base station shapes the transmitted signal with the precoder so as to match it as closely as possible to the current channel. Particular embodiments thus combine the benefits of the stale feedback scheme with precoding to match the channel. Consequently, the signal received at a terminal is better conditioned, thereby providing a greater overall boost in performance of the communication arrangement between the base station and the terminal. The usage of partially-stale CSI can be important for dense networks with a large number of simple terminals.
摘要翻译： 一种基站将无线终端的信道状态信息（CSI）仅处于部分状态的系统和方法，并利用该部分陈旧的CSI来预测来自信道的旧估计的当前信道。 然后预测的通道用于设计预编码器。 基站用预编码器对发射信号进行整形，使其尽可能接近当前信道。 因此，特定的实施例将陈旧反馈方案的优点与预编码相结合以匹配信道。 因此，在终端处接收的信号被更好地调节，从而对基站和终端之间的通信装置的性能提供更大的整体提升。 部分陈旧的CSI的使用对于具有大量简单终端的密集网络来说可能是重要的。
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72.发明授权公开(公告)号：US08934581B2
公开(公告)日：2015-01-13
申请号：US13454919
申请日：2012-04-24
IPC分类号： H04L27/06
CPC分类号： H04L25/03012 , H04L1/005 , H04L25/03171 , H04L25/0328 , H04L27/38
摘要： In one aspect, the present invention improves Turbo equalization and/or soft interference cancellation processing in communication receivers by providing an efficient and accurate technique to compute the second moment of a received symbol, e.g., an interfering symbol, as a function of the expected bit values of only those bits in the symbol that are magnitude-controlling bits according to a defined modulation constellation. Advantageously, the expected bit values in at least one embodiment are computed using a LUT that maps bit LLRs to corresponding hyperbolic tangent function values. Further, the expected symbol value is computed as a linear function of terms comprising the expected bit values and the soft symbol variance is efficiently computed from the second moment and the expected symbol value squared. This simplified processing reduces receiver complexity, particularly in the context of modulation constellations having non-constant magnitudes, and thus saves power and/or improves design economics.
摘要翻译： 在一个方面，本发明通过提供有效和准确的技术来计算接收符号的第二时刻（例如干扰符号）来改善通信接收机中的Turbo均衡和/或软干扰消除处理，作为预期位的函数 根据定义的调制星座，只有符号中那些位是幅度控制位的值。 有利地，使用将位LLR映射到对应的双曲正切函数值的LUT来计算至少一个实施例中的预期位值。 此外，预期符号值被计算为包括预期位值的项的线性函数，并且从第二时刻有效地计算软符号方差，并且预期符号值平方。 这种简化的处理降低了接收机的复杂度，特别是在具有非恒定幅度的调制星座的上下文中，从而节省功率和/或提高了设计经济性。
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73.发明授权Method and arrangement for pilot pattern based control signaling in MIMO systems 有权MIMO系统中基于导频模式的控制信令的方法和装置公开(公告)号：US08923423B2
公开(公告)日：2014-12-30
申请号：US12514762
申请日：2006-11-13
CPC分类号： H04L5/005 , H04B7/0417 , H04B7/0632 , H04B7/0684 , H04B2201/70701 , H04J13/0003 , H04L1/0003 , H04L1/0009 , H04L1/0015 , H04L1/0026 , H04L1/0618 , H04L2001/0093
摘要： The present invention relates to control signaling in wireless communication systems. In particular, the present invention relates to control signaling in MIMO based communication systems. In the method according to the invention control information is transferred from a base station to at least one user equipment, via a plurality of common pilot channels. A set of unique pilot sequences has been pre-defined, and the base station assigns specific pilot sequences from the set of pilot sequences to specific common pilot channels, forming a pilot sequence assignment pattern representing a specific control information. The user equipment, having knowledge of the relations between pilot sequence assignment patterns and control information, interprets the received pilot sequence assignment pattern as specific control information. The method is particularly well suited for broadcast type control information.
摘要翻译： 本发明涉及无线通信系统中的控制信令。 具体地，本发明涉及基于MIMO的通信系统中的控制信令。 在根据本发明的方法中，控制信息经由多个公共导频信道从基站传送到至少一个用户设备。 已经预先定义了一组唯一的导频序列，并且基站将特定导频序列从该导频序列集合分配给特定的公共导频信道，形成表示特定控制信息的导频序列分配模式。 了解导频序列分配模式和控制信息之间的关系的用户设备将接收到的导频序列分配模式解释为特定的控制信息。 该方法特别适用于广播类型控制信息。
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公开(公告)号：US08804886B2
公开(公告)日：2014-08-12
申请号：US13091062
申请日：2011-04-20
申请人： Yi-Pin Eric Wang
发明人： Yi-Pin Eric Wang
IPC分类号： H04B1/10
CPC分类号： H04L25/03057 , H04B7/0413 , H04L1/005 , H04L1/0066 , H04L1/208 , H04L25/067 , H04L2025/03363 , H04L2025/03426
摘要： A receiver for processing a received signal encoded with a codeword and mapped to two layers includes a plurality of equalizers for equalizing the received signal, a plurality of demodulators for demodulating a respective equalized signal, a decoder for decoding the demodulated signal by extracting soft bits from the demodulated signal, a modulator for modulating the decoded signal by generating soft symbols based on the extracted soft bits, a demapper for demapping the modulated signal to soft symbols corresponding to each of the two layers and a plurality of inter-layer interference cancellers for cancelling interference utilizing the demapped soft symbols wherein the demapped soft symbols are utilized also by the equalizers to reduce inter-symbol interference.
摘要翻译： 用于处理用码字编码并映射到两层的接收信号的接收机包括用于均衡接收信号的多个均衡器，用于解调相应的均衡信号的多个解调器，用于通过提取软比特来解码解调信号的解码器 解调信号，用于通过基于提取的软比特生成软符号来调制解码信号的调制器，用于将调制信号解映射到对应于两个层中的每一个的软符号的解映射器和用于消除的多个层间干扰消除器 利用解映射的软符号的干扰，其中平滑器还利用去映射的软符号来减少符号间干扰。
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公开(公告)号：US08787427B2
公开(公告)日：2014-07-22
申请号：US13468680
申请日：2012-05-10
IPC分类号： H04B1/00
CPC分类号： H04B1/7105 , H04B1/7097 , H04B1/71052 , H04B1/71057 , H04L25/03331
摘要： A CDMA multi-code joint demodulation solution in which impairment suppression and channel matching operations are performed prior to despreading. Embodiments include a linear front end that performs chip-level suppression of signal components that are not included in a subsequent joint demodulation process. The pre-processing stage also carries out metric preparation and provides a vector decision statistic that is processed by a joint demodulation stage to extract per-code soft values for the symbols of interest in the received signal. Both code-specific and code-averaged versions of the linear processing are disclosed, as are several front-end configurations with equivalent performance, but different complexity trade-offs. These new approaches use a block formulation, requiring a set of input chip samples as an input, and perform all operations as matrix-vector multiplications, which is an approach amenable to efficient DSP or hardware implementation.
摘要翻译： 一种CDMA解码解码方案，其中在解扩之前执行损伤抑制和信道匹配操作。 实施例包括执行不包括在随后的联合解调处理中的信号分量的芯片级抑制的线性前端。 预处理阶段还执行度量准备，并提供由联合解调级处理以提取接收信号中感兴趣符号的每码软值的向量决策统计量。 公开了线性处理的代码特定和代码平均版本，以及具有相同性能但是不同复杂性权衡的若干前端配置。 这些新方法使用块公式，需要一组输入芯片样本作为输入，并执行所有操作作为矩阵向量乘法，这是一种适合高效DSP或硬件实现的方法。
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公开(公告)号：US08737496B2
公开(公告)日：2014-05-27
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： H04K1/10
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。
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77.发明授权Denial of service (DoS) attack prevention through random access channel resource reallocation 有权拒绝服务（DoS）攻击预防通过随机接入信道资源重新分配公开(公告)号：US08711791B2
公开(公告)日：2014-04-29
申请号：US12972688
申请日：2010-12-20
申请人： Yi-Pin Eric Wang , Dennis Hui , Havish Koorapaty
发明人： Yi-Pin Eric Wang , Dennis Hui , Havish Koorapaty
IPC分类号： H04W4/00
CPC分类号： H04L63/1458 , H04W12/12
摘要： A method of managing wireless transmissions from a mobile handset includes determining whether the mobile handset is a source of a Random Access Channel (RACH) overload in the wireless network and, upon determining that the mobile handset is a source of the RACH overload, configuring the mobile handset to replace usage of a first RACH resource causing the RACH overload with usage of a second RACH resource specified by the processor.
摘要翻译： 管理来自移动手持机的无线传输的方法包括确定移动手持机是否是无线网络中随机接入信道（RACH）过载的源，并且在确定移动手持机是RACH过载的源时，配置 移动手机来替换使用由处理器指定的第二RACH资源的导致RACH过载的第一RACH资源的使用。
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公开(公告)号：US08675785B2
公开(公告)日：2014-03-18
申请号：US13470638
申请日：2012-05-14
申请人： Andres Reial , Stephen Grant , Matthias Kamuf , Yi-Pin Eric Wang
发明人： Andres Reial , Stephen Grant , Matthias Kamuf , Yi-Pin Eric Wang
CPC分类号： H04L25/03178 , H04L1/0051 , H04L1/06 , H04L1/1845 , H04L25/03286 , H04L2025/03426
摘要： One aspect of the present invention concerns the management of processing resource allocations for a Turbo receiver, where such resources are consumed from a finite resource budget within a defined processing time interval. The contemplated Turbo receiver attempts to allocate more processing resources to those demodulation and/or Turbo decoding tasks that make more valuable contributions with respect to the ultimate goal of successfully decoding all data streams that are of interest in a received signal. The advantageous management approach allows the Turbo receiver to obtain better results for a given consumption of processing resources, and further permits the Turbo receiver to quit upon either achieving a successful outcome within a defined processing time interval or exhausting the budgeted resources.
摘要翻译： 本发明的一个方面涉及对Turbo接收机处理资源分配的管理，其中这些资源在限定的处理时间间隔内从有限的资源预算中消耗。 考虑的Turbo接收机尝试为那些解调和/或Turbo解码任务分配更多的处理资源，这对于成功地解码所接收的信号感兴趣的所有数据流的最终目标而做出更有价值的贡献。 有利的管理方法允许Turbo接收机为给定的处理资源消耗获得更好的结果，并且还允许Turbo接收机在定义的处理时间间隔内实现成功的结果或者排除预算的资源。
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公开(公告)号：US20130301758A1
公开(公告)日：2013-11-14
申请号：US13470638
申请日：2012-05-14
申请人： Andres Reial , Stephen Grant , Matthias Kamuf , Yi-Pin Eric Wang
发明人： Andres Reial , Stephen Grant , Matthias Kamuf , Yi-Pin Eric Wang
CPC分类号： H04L25/03178 , H04L1/0051 , H04L1/06 , H04L1/1845 , H04L25/03286 , H04L2025/03426
摘要： One aspect of the present invention concerns the management of processing resource allocations for a Turbo receiver, where such resources are consumed from a finite resource budget within a defined processing time interval. The contemplated Turbo receiver attempts to allocate more processing resources to those demodulation and/or Turbo decoding tasks that make more valuable contributions with respect to the ultimate goal of successfully decoding all data streams that are of interest in a received signal. The advantageous management approach allows the Turbo receiver to obtain better results for a given consumption of processing resources, and further permits the Turbo receiver to quit upon either achieving a successful outcome within a defined processing time interval or exhausting the budgeted resources.
摘要翻译： 本发明的一个方面涉及对Turbo接收机处理资源分配的管理，其中这些资源在限定的处理时间间隔内从有限的资源预算中消耗。 考虑的Turbo接收机尝试为那些解调和/或Turbo解码任务分配更多的处理资源，这对于成功地解码所接收的信号感兴趣的所有数据流的最终目标而做出更有价值的贡献。 有利的管理方法允许Turbo接收机为给定的处理资源消耗获得更好的结果，并且还允许Turbo接收机在定义的处理时间间隔内实现成功的结果或者排除预算的资源。
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公开(公告)号：US08498273B2
公开(公告)日：2013-07-30
申请号：US12537148
申请日：2009-08-06
申请人： Yi-Pin Eric Wang , Anders Wallén , Stephen Grant
发明人： Yi-Pin Eric Wang , Anders Wallén , Stephen Grant
IPC分类号： H04B1/707
CPC分类号： H04W72/0486 , H04W72/0453
摘要： The method an apparatus described herein manages uplink resources to increase spectral efficiency and system capacity. According to one embodiment of the present invention, a base station may be assigned two or more downlink carriers for downlink transmission and two or more corresponding uplink carriers. In a multi-carrier mode, the base station may transmit signals on two or more downlink carriers to the same mobile terminal, and receive signals from the mobile terminal on one of the paired uplink terminals. The uplink carriers can be operated at different interference levels and the uplink traffic can be divided between the available uplink carriers based on the type of traffic and/or data transmission parameters. The mobile terminals may also be allowed to switch between the uplink carriers to improve overall efficiency.
摘要翻译： 本文描述的方法和装置管理上行链路资源以提高频谱效率和系统容量。 根据本发明的一个实施例，可以为基站分配用于下行链路传输的两个或更多个下行链路载波和两个或更多个对应的上行链路载波。 在多载波模式中，基站可以在两个或多个下行链路载波上发送信号到同一个移动终端，并且在一个上行链路终端中的一个上接收来自移动终端的信号。 上行链路载波可以以不同的干扰级别操作，并且可以基于业务类型和/或数据传输参数在可用的上行链路载波之间划分上行链路业务。 还可以允许移动终端在上行链路载波之间切换以提高整体效率。
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