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公开(公告)号：US08254977B2
公开(公告)日：2012-08-28
申请号：US11441651
申请日：2006-05-25
CPC分类号： H04W52/343 , H04W52/367
摘要： A novel MAC algorithm is disclosed having various features for a modern CDMA interference-shared reverse link, including (a) link quality assurance, (b) individual congestion control, (c) variable data rate transition policy, and/or (d) reverse link partitioning. Link quality assurance is provided by monitoring transmission feedback information (ACK/NACK) to indirectly determine the quality of a communication link. Wireless devices are individually targeted to perform congestion control of the reverse link. Variable data transmission rates and discontinuous transmissions are achieved by individual wireless devices that autonomously adjust their transmission rate and transmit power. The reverse link can also be partitioned among the different wireless devices by individually controlling the transmit power of the wireless devices operating on the reverse link.
摘要翻译： 公开了一种新颖的MAC算法，其具有用于现代CDMA干扰共享反向链路的各种特征，包括（a）链路质量保证，（b）个体拥塞控制，（c）可变数据速率转换策略和/或（d）反向 链接分区。 通过监视传输反馈信息（ACK / NACK）来间接地确定通信链路的质量来提供链路质量保证。 无线设备被单独定向以执行反向链路的拥塞控制。 可变数据传输速率和不连续传输通过自主调整其传输速率和传输功率的各个无线设备实现。 也可以通过单独控制在反向链路上操作的无线设备的发射功率，在不同的无线设备之间对反向链路进行分区。
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公开(公告)号：US07929646B2
公开(公告)日：2011-04-19
申请号：US11441653
申请日：2006-05-25
IPC分类号： H04L27/06
CPC分类号： H03M13/3905 , H03M13/3723 , H03M13/3972 , H03M13/6561
摘要： A MAP decoder, or a turbo decoder having constituted MAP decoders, is configured with bi-directional sliding windows. A sliding window architecture is applied to the forward state metric (FSM) calculation of an encoded data block having a trellis with N time-steps. The data block is divided into smaller sub-blocks and a forward recursion of two or more of the sub-blocks are performed in parallel to obtain FSMs. Each sub-block overlaps with a previous sub-block by k time-steps, where k is an integer value greater than zero. This provides a good approximation of the FSMs at time-step k+t of the sub-block. The FSMs associated with the first k time steps of each sub-block, other than the first sub-block, are discarded. A reverse recursion of each sub-block is also performed to obtain reverse state metrics (RSM) for the sub-block. Likelihood ratios are then calculated based on the FSMs and RSMs.
摘要翻译： 具有MAP解码器的MAP解码器或turbo解码器配置有双向滑动窗口。 将滑动窗口架构应用于具有N个时间步长的网格的编码数据块的前向状态度量（FSM）计算。 将数据块划分为更小的子块，并行执行两个或更多个子块的正向递归，以获得FSM。 每个子块与先前的子块重叠k个时间步长，其中k是大于零的整数值。 这提供了子块的时间步长k + t处的FSM的良好近似。 与除第一子块之外的每个子块的第一k个时间步长相关联的FSM被丢弃。 还执行每个子块的反向递归以获得子块的反向状态度量（RSM）。 然后根据FSM和RSM计算似然比。
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公开(公告)号：US20100008453A1
公开(公告)日：2010-01-14
申请号：US12567181
申请日：2009-09-25
申请人： Ivan Jesus Fernandez-Corbaton , Ahmad Jalali , Ernest T. Ozaki , Harris Smith Simon , Sherman A. Gregory
发明人： Ivan Jesus Fernandez-Corbaton , Ahmad Jalali , Ernest T. Ozaki , Harris Smith Simon , Sherman A. Gregory
CPC分类号： H01Q25/00
摘要： At least one feature provides a way to perform point-to-multipoint transmissions using adaptive or directional antennas while reducing antenna pattern distortion. Generally, rather than transmitting the same waveform to two or more receivers, an information-bearing signal is transformed into different decorrelated waveforms and each decorrelated waveform is transmitted to a different receiver. In one implementation, an information-bearing signal is transformed into two decorrelated signals such that their crosscorrelation, or autocorrelation of the information-bearing signal, is zero or very small. Such decorrelation may be achieved by sending a first signal to a first receiver while sending a second signal, having a radio frequency spectrum that is the spectrally inverted version of the first signal, to a second receiver. In another implementation, a first signal is transmitted to a first receiver and is also transmitted to a second receiver with a time delay.
摘要翻译： 至少一个特征提供了使用自适应或定向天线执行点对多点传输的方式，同时减少天线模式失真。 通常，不是将相同的波形发送到两个或更多个接收机，而是将信息承载信号变换成不同的去相关波形，并将每个去相关的波形发送到不同的接收机。 在一个实现中，信息承载信号被变换成两个去相关信号，使得其信息载运信号的互相关或自相关为零或非常小。 这种去相关可以通过向第一接收机发送第一信号来实现，同时向第二接收机发送具有作为第一信号的频谱反转版本的射频频谱的第二信号。 在另一实现中，第一信号被发送到第一接收机，并且还以时间延迟被发送到第二接收机。
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公开(公告)号：US08559895B2
公开(公告)日：2013-10-15
申请号：US12567181
申请日：2009-09-25
申请人： Ivan Jesus Fernandez-Corbaton , Ahmad Jalali , Ernest T. Ozaki , Harris Smith Simon , Sherman A. Gregory
发明人： Ivan Jesus Fernandez-Corbaton , Ahmad Jalali , Ernest T. Ozaki , Harris Smith Simon , Sherman A. Gregory
IPC分类号： H04B1/04
CPC分类号： H01Q25/00
摘要： At least one feature provides a way to perform point-to-multipoint transmissions using adaptive or directional antennas while reducing antenna pattern distortion. Generally, rather than transmitting the same waveform to two or more receivers, an information-bearing signal is transformed into different decorrelated waveforms and each decorrelated waveform is transmitted to a different receiver. In one implementation, an information-bearing signal is transformed into two decorrelated signals such that their crosscorrelation, or autocorrelation of the information-bearing signal, is zero or very small. Such decorrelation may be achieved by sending a first signal to a first receiver while sending a second signal, having a radio frequency spectrum that is the spectrally inverted version of the first signal, to a second receiver. In another implementation, a first signal is transmitted to a first receiver and is also transmitted to a second receiver with a time delay.
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公开(公告)号：US07610025B2
公开(公告)日：2009-10-27
申请号：US11182236
申请日：2005-07-15
申请人： Ivan Jesus Fernandez-Corbaton , Ahmad Jalali , Ernest T. Ozaki , Harris Smith Simon , Sherman A. Gregory
发明人： Ivan Jesus Fernandez-Corbaton , Ahmad Jalali , Ernest T. Ozaki , Harris Smith Simon , Sherman A. Gregory
IPC分类号： H04B1/04
CPC分类号： H01Q25/00
摘要： At least one feature provides a way to perform point-to-multipoint transmissions using adaptive or directional antennas while reducing antenna pattern distortion. Generally, rather than transmitting the same waveform to two or more receivers, an information-bearing signal is transformed into different decorrelated waveforms and each decorrelated waveform is transmitted to a different receiver. In one implementation, an information-bearing signal is transformed into two decorrelated signals such that their crosscorrelation, or autocorrelation of the information-bearing signal, is zero or very small. Such decorrelation may be achieved by sending a first signal to a first receiver while sending a second signal, having a radio frequency spectrum that is the spectrally inverted version of the first signal, to a second receiver. In another implementation, a first signal is transmitted to a first receiver and is also transmitted to a second receiver with a time delay.
摘要翻译： 至少一个特征提供了使用自适应或定向天线执行点对多点传输的方式，同时减少天线模式失真。 通常，不是将相同的波形发送到两个或更多个接收机，而是将信息承载信号变换成不同的去相关波形，并将每个去相关的波形发送到不同的接收机。 在一个实现中，信息承载信号被变换成两个去相关信号，使得其信息载运信号的互相关或自相关为零或非常小。 这种去相关可以通过向第一接收机发送第一信号来实现，同时向第二接收机发送具有作为第一信号的频谱反转版本的射频频谱的第二信号。 在另一实现中，第一信号被发送到第一接收机，并且还以时间延迟被发送到第二接收机。
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公开(公告)号：US07450541B2
公开(公告)日：2008-11-11
申请号：US10952970
申请日：2004-09-28
CPC分类号： H04W56/0005 , H04J13/16
摘要： Systems, methods and apparatus for configuring and accessing a random access channel in a CDMA communication system are disclosed. The number of users supported by a random access channel can be optimized by assigning a distinct time of arrival to each of a plurality of users. Each of the users can be time synchronized and can transmit data at a time that compensates for a propagation delay to allow the data to arrive at the destination receiver at the assigned time. In a CDMA system, each of the users can transmit data that is spread with the same spreading code, provided the cross correlation properties of the code are sufficient to allow identification of a source that is time offset relative to another user. The time of arrival can be determined based on the number of active users, and can be assigned as often as each transmission by each user.
摘要翻译： 公开了用于在CDMA通信系统中配置和访问随机接入信道的系统，方法和装置。 可以通过向多个用户中的每一个分配不同的到达时间来优化随机接入信道支持的用户数量。 每个用户可以是时间同步的，并且可以在补偿传播延迟的时间发送数据，以允许数据在分配的时间到达目的地接收机。 在CDMA系统中，如果代码的互相关属性足以允许识别相对于另一个用户的时间偏移的源，那么每个用户可以发送用相同的扩展码扩展的数据。 可以基于活动用户的数量来确定到达时间，并且可以分配给每个用户每次发送的频率。
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7.发明授权公开(公告)号：US08825099B2
公开(公告)日：2014-09-02
申请号：US11969060
申请日：2008-01-03
CPC分类号： H04B7/04 , H04L1/0028 , H04W52/346 , H04W52/42
摘要： Techniques for determining and reporting channel quality indicator (CQI) information are described. A user equipment (UE) may determine a transmit power per channelization code, POVSF, based on the available transmit power and a designated number of channelization codes, e.g., by uniformly distributing the available transmit power across all transport blocks and all of the designated number of channelization codes. The UE may estimate SINRs of multiple transport blocks based on POVSF, determine CQI indices for the transport blocks based on the SINRs, and send the CQI indices to a Node B. The Node B may send multiple transport blocks to the UE based on the CQI indices. The Node B may send the transport blocks (i) with the designated number of channelization codes at POVSF or (ii) with a second number of channelization codes at POVSF, with the transport block sizes being scaled based on the designated and second numbers of channelization codes.
摘要翻译： 描述用于确定和报告信道质量指示符（CQI）信息的技术。 用户设备（UE）可以基于可用发射功率和指定数量的信道化码来确定每个信道化码POVSF的发射功率，例如通过在所有传输块上均匀分布可用的发射功率和所有指定的号码 的渠道化代码。 UE可以基于POVSF估计多个传输块的SINR，基于SINR确定传输块的CQI索引，并将CQI索引发送到节点B.节点B可以基于CQI发送多个传输块到UE 指数。 节点B可以以POVSF发送具有指定数量的信道化码的传输块（i），或者（ii）以POVSF的第二数量的信道化码发送传输块，其中传输块大小基于指定和第二数量的信道化 代码。
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8.发明授权Feedback of precoding control indication (PCI) and channel quality indication (CQI) in a wireless communication system 有权无线通信系统中预编码控制指示（PCI）和信道质量指示（CQI）的反馈公开(公告)号：US08699587B2
公开(公告)日：2014-04-15
申请号：US11841549
申请日：2007-08-20
IPC分类号： H04L27/28
CPC分类号： H04B7/0639 , H04B7/0619 , H04B7/063 , H04B7/0632
摘要： Techniques for sending feedback information in a wireless communication system are described. In one design, precoding control indication (PCI), rank, and channel quality indication (CQI) for data transmission from a transmitter to a receiver may be determined by evaluating different hypotheses. A report may be formed based on the PCI, rank and CQI. The PCI may include a precoding matrix or vector to use for the data transmission. The CQI may include at least one CQI value for at least one transport block to send for the data transmission. The rank and CQI may be combined based on a mapping. For example, the CQI may include one CQI value and fall within a first range of values if one transport block is preferred by the receiver. The CQI may include two CQI values and fall within a second range of values if two transport blocks are preferred.
摘要翻译： 描述在无线通信系统中发送反馈信息的技术。 在一种设计中，可以通过评估不同的假设来确定用于从发射机到接收机的数据传输的预编码控制指示（PCI），秩和信道质量指示（CQI）。 可以基于PCI，等级和CQI形成报告。 PCI可以包括用于数据传输的预编码矩阵或向量。 CQI可以包括用于为了数据传输而发送的至少一个传输块的至少一个CQI值。 可以基于映射来组合秩和CQI。 例如，如果接收机优选一个传输块，则CQI可以包括一个CQI值并且落入第一值范围内。 如果两个传输块是优选的，则CQI可以包括两个CQI值并且落在值的第二范围内。
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9.发明授权Transmission structure supporting multi-user scheduling and MIMO transmission 有权支持多用户调度和MIMO传输的传输结构公开(公告)号：US08638771B2
公开(公告)日：2014-01-28
申请号：US11502882
申请日：2006-08-10
IPC分类号： H04B7/212
CPC分类号： H04J11/003 , H04B1/7107 , H04B1/7176 , H04B7/2618 , H04B2201/70703 , H04J13/00 , H04J13/16 , H04L5/0023 , H04W72/12
摘要： Techniques for transmitting data in a manner to support multi-user scheduling, multiple-input multiple-output (MIMO) transmission, and interference cancellation are described. A base station assigns multiple time segments of a transmission time interval (TTI) to at least one terminal, maps data for each terminal to at least one time segment assigned to the terminal, and spreads the data in each time segment with at least one channelization code used in the TTI. A terminal receives an assignment of at least one time segment from among multiple time segments of the TTI, obtains input samples for the at least one time segment, and despreads the input samples with the at least one channelization code used in the TTI.
摘要翻译： 描述了以支持多用户调度，多输入多输出（MIMO）传输和干扰消除的方式发送数据的技术。 基站向至少一个终端分配传输时间间隔（TTI）的多个时间段，将每个终端的数据映射到分配给终端的至少一个时间段，并且在每个时间段中传播具有至少一个信道化的数据 TTI中使用的代码。 终端从TTI的多个时间段中接收至少一个时间段的分配，获得至少一个时间段的输入采样，并且用TTI中使用的至少一个信道化码解扩输入的采样。
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10.发明申请公开(公告)号：US20080188259A1
公开(公告)日：2008-08-07
申请号：US11969060
申请日：2008-01-03
IPC分类号： H04B7/00
CPC分类号： H04B7/04 , H04L1/0028 , H04W52/346 , H04W52/42
摘要： Techniques for determining and reporting channel quality indicator (CQI) information are described. A user equipment (UE) may determine a transmit power per channelization code, POVSF, based on the available transmit power and a designated number of channelization codes, e.g., by uniformly distributing the available transmit power across all transport blocks and all of the designated number of channelization codes. The UE may estimate SINRs of multiple transport blocks based on POVSF, determine CQI indices for the transport blocks based on the SINRs, and send the CQI indices to a Node B. The Node B may send multiple transport blocks to the UE based on the CQI indices. The Node B may send the transport blocks (i) with the designated number of channelization codes at POVSF or (ii) with a second number of channelization codes at POVSF, with the transport block sizes being scaled based on the designated and second numbers of channelization codes.
摘要翻译： 描述用于确定和报告信道质量指示符（CQI）信息的技术。 用户设备（UE）可以基于可用的发射功率和指定数量的信道化码来确定每个信道化码，即OVSF信道的发射功率，例如，通过均匀地分配所有可用的发射功率 传输块和所有指定数量的信道化码。 UE可以基于P0S0SF估计多个传输块的SINR，基于SINR确定传输块的CQI索引，并将CQI索引发送到节点B.节点B可以发送多个传输 基于CQI索引到UE的块。 节点B可以在P0S OVSF处发送具有指定数量的信道化码的传输块（i），或者（ii）具有第二数量的信道化码在P OVSF＆lt; 其中传输块大小基于指定和第二数量的信道化码进行缩放。
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