公开(公告)号：US06754254B2

公开(公告)日：2004-06-22

申请号：US10007870

申请日：2001-11-09

申请人： Andrew Sendonaris

发明人： Andrew Sendonaris

IPC分类号： H04B169

CPC分类号： H04W52/24 ,  H04B1/7115

摘要： When all of the fingers of a wireless rake receiver are “out-of-lock,” the transmit power is initially maintained at a constant level. When the “out-of-lock” condition persists for an extended period of time, transmit power is increased in an effort to reacquire a lock with a subscriber unit or base station, as the case may be. An increase in transmit power may be effective in reacquiring lock when the cause of the out-of-lock condition is slow fading, rather than fast fading. Slow fading may be evidenced by persistence of the out-of-lock condition for an extended period of time. The length of the out-of-lock condition is used to selectively control transmit power and thereby promote quality of service. Transmit power is only increased when the fingers remain out-of-lock for an extended period of time, thereby avoiding undue increases in transmit power that could produce interference among different subscriber units.

摘要翻译： 当无线耙式接收机的所有指状物都“锁定不足”时，发射功率最初保持在恒定水平。 当“失锁”状态持续较长时间时，增加发射功率，努力重新获取用户单元或基站（视具体情况而定）的锁定。 当失锁状态的原因缓慢衰落而不是快速衰落时，发送功率的增加可能有效地重新获取锁定。 缓慢的衰落可以通过长时间的失锁状态的持续来证明。 锁定状态的长度用于选择性地控制发射功率，从而提高服务质量。 只有当手指长时间保持锁定时，才能增加发射功率，从而避免可能在不同用户单元之间产生干扰的发射功率的过度增加。

公开(公告)号：US6141552A

公开(公告)日：2000-10-31

申请号：US971441

申请日：1997-11-17

申请人： Andrew Sendonaris ,  Hongyi Chen ,  Nikhil Jain ,  Seshagri Madhavapeddy ,  Sairam Subramanian

发明人： Andrew Sendonaris ,  Hongyi Chen ,  Nikhil Jain ,  Seshagri Madhavapeddy ,  Sairam Subramanian

IPC分类号： H04W16/18 ,  H04Q7/00

CPC分类号： H04W16/18

摘要： The mobility of mobile subscribers within a wireless digital communications system is estimated based on highway maps and traffic data. Cells within the network are modelled as nodes connected by edges where neighboring cells are connected by roads. Each edge has two edge weight components representing traffic flow from one cell to the other and vice versa. The edge weight components are calculated from terrain factors based on the size or capacity of the roads connecting the two cells and the total traffic within the subject cell, which information may be obtained from commercial geographic databases and/or government agencies. The resulting edge weight represents an expected number of handoffs between the two cells. The problem of partitioning cells among available switches within the network is thus reduced to the purely mathematical problem of minimizing the total edge weights of edges intersected by the partition boundaries. Existing mathematical optimization techniques for optimizing node-edge systems may therefore be applied to reduce the total number of expected inter-switch handoffs as mobile subscribers pass from cell to cell within the network.

摘要翻译： 基于高速公路地图和交通数据估计无线数字通信系统内移动用户的移动性。 网络内的小区被建模为通过边缘连接的节点，其中相邻小区通过道路连接。 每个边缘具有两个边缘权重分量，表示从一个小区到另一个小区的业务流量，反之亦然。 基于连接两个小区的道路的大小或容量以及主体小区内的总流量，从地形因子计算边缘权重分量，该信息可以从商业地理数据库和/或政府机构获得。 所得到的边缘权重表示两个单元之间的预期切换次数。 因此，将网络内的可用交换机之间的小区划分成一个问题，从而减少了将分区边界相交的边缘的总边缘权重最小化的纯数学问题。 因此，用于优化节点边缘系统的现有数学优化技术可以被应用于当移动用户从网络中的小区传送到小区时，减少预期的交换机间切换的总数。

公开(公告)号：US6085106A

公开(公告)日：2000-07-04

申请号：US901979

申请日：1997-07-29

申请人： Andrew Sendonaris ,  Venugopal Veeravalli ,  Mohamed Landolsi ,  Abdel-Ghani Daraiseh

发明人： Andrew Sendonaris ,  Venugopal Veeravalli ,  Mohamed Landolsi ,  Abdel-Ghani Daraiseh

IPC分类号： H04B7/005 ,  H04W52/00 ,  H04W52/20 ,  H04W52/24 ,  H04W52/34 ,  H04W52/40 ,  H04Q7/20 ,  H04Q7/00

CPC分类号： H04W52/343 ,  H04W52/346 ,  H04W52/40 ,  H04W52/20 ,  H04W52/24

摘要： The optimal power allocation process of the present invention allocates power between two base stations, serving a given mobile radiotelephone, during soft hand-off. A minimum total transmit power is chosen initially. The minimum total transmit power level, the path losses for each base station, the maximum transmit power for each base station, and the minimum allowed received power are all used to generate a range of values for a transmit power level multiplier, .alpha.. The multiplier is used to allocate the total transmit power among the base stations. This process is performed until the probability of bit error is less than a maximum threshold.

摘要翻译： 本发明的最佳功率分配过程在软切换期间在为给定的移动无线电话服务的两个基站之间分配功率。 最初选择最小总发射功率。 最小总发射功率电平，每个基站的路径损耗，每个基站的最大发射功率和最小允许接收功率都用于生成发射功率电平乘法器α的值的范围。 乘法器用于分配基站之间的总发射功率。 执行该处理直到位错误的概率小于最大阈值。

公开(公告)号：US20130271324A1

公开(公告)日：2013-10-17

申请号：US13831740

申请日：2013-03-15

申请人： Andrew Sendonaris ,  Norman F. Krasner ,  Haochen Tang

发明人： Andrew Sendonaris ,  Norman F. Krasner ,  Haochen Tang

IPC分类号： G01S5/02

CPC分类号： G01S5/02 ,  G01S5/009 ,  G01S5/0236 ,  G01S5/14 ,  G01S19/22 ,  G01S19/41

摘要： Systems, methods and computer program products for determining a position location estimate for a remote receiver based on one or more time-of-arrival measurements transmitted from one or more transmitters and first timing data associated with the one or more transmitters and further associated with one or more reference locations within a reference area of the remote receiver are described.

摘要翻译： 用于基于从一个或多个发射机发送的一个或多个到达时间测量值和与所述一个或多个发射机相关联的第一定时数据确定远程接收机的位置位置估计的系统，方法和计算机程序产品，并且还与一个 或远程接收机的参考区域内的更多参考位置。

公开(公告)号：US08412127B2

公开(公告)日：2013-04-02

申请号：US12838681

申请日：2010-07-19

申请人： Andrew Sendonaris

发明人： Andrew Sendonaris

IPC分类号： H04B7/02

CPC分类号： H04B7/0617 ,  H04B7/0682

摘要： An improved method and apparatus for Mobile Transmit Diversity (MTD), or Uplink Transmit Diversity (ULTD) is disclosed. The mobile device either selects the best antenna at any given time, or transmits from both antennas using the best beam forming phase without feedback from the base station on which antenna to transmit from or which phase to use if using two antennas. Essentially operating in Open Loop MTD, a Hybrid Phase Sweeping algorithm requires testing of a fraction of phase hypotheses resulting in improved base station performance and higher data rates for the user.

摘要翻译： 公开了一种用于移动发射分集（MTD）或上行链路发射分集（ULTD）的改进的方法和装置。 移动设备在任何给定时间选择最佳天线，或者使用最佳波束形成相位从两个天线发射，如果使用两个天线，则从哪个天线发射哪个天线或哪个相位使用来自基站的反馈。 基本上在开环MTD中运行，混合相位扫描算法需要测试一部分相位假设，从而提高用户的基站性能和更高的数据速率。

公开(公告)号：US20110237208A1

公开(公告)日：2011-09-29

申请号：US12838681

申请日：2010-07-19

申请人： Andrew Sendonaris

发明人： Andrew Sendonaris

IPC分类号： H04B7/02

CPC分类号： H04B7/0617 ,  H04B7/0682

摘要： An improved method and apparatus for Mobile Transmit Diversity (MTD), or Uplink Transmit Diversity (ULTD) is disclosed. The mobile device either selects the best antenna at any given time, or transmits from both antennas using the best beam forming phase without feedback from the base station on which antenna to transmit from or which phase to use if using two antennas. Essentially operating in Open Loop MTD, a Hybrid Phase Sweeping algorithm requires testing of a fraction of phase hypotheses resulting in improved base station performance and higher data rates for the user.

摘要翻译： 公开了一种用于移动发射分集（MTD）或上行链路发射分集（ULTD）的改进的方法和装置。 移动设备在任何给定时间选择最佳天线，或者使用最佳波束形成相位从两个天线发射，如果使用两个天线，则从哪个天线发射哪个天线或哪个相位使用来自基站的反馈。 基本上在开环MTD中运行，混合相位扫描算法需要测试一部分相位假设，从而提高用户的基站性能和更高的数据速率。

公开(公告)号：US07002946B2

公开(公告)日：2006-02-21

申请号：US09907096

申请日：2001-07-16

申请人： Andrew Sendonaris

发明人： Andrew Sendonaris

IPC分类号： H04B7/216

CPC分类号： H04L27/0014 ,  H04L2027/0024 ,  H04L2027/0055 ,  H04L2027/0065

摘要： A cross product is determined for a received signal. A dot product is also determined for the received signal. If the cross product is greater than a predetermined threshold, the cross product is decremented by the product of the dot product multiplied by a constant value. If the cross product is less than or equal to the predetermined threshold, the cross product is incremented by the product of the dot product multiplied by the constant value. The incrementing or decrementing is continued until the frequency error approaches a minimum value.

摘要翻译： 确定接收信号的交叉积。 还针对接收到的信号确定点积。 如果十字积大于预定阈值，则交叉乘积乘积乘积恒定值的积乘积。 如果交叉积小于或等于预定阈值，则交叉乘积乘以点乘积乘以常数值的乘积。 继续递增或递减直到频率误差接近最小值。

公开(公告)号：US06947475B2

公开(公告)日：2005-09-20

申请号：US09826130

申请日：2001-04-04

申请人： Andrew Sendonaris ,  Rajesh Sundaresan

发明人： Andrew Sendonaris ,  Rajesh Sundaresan

IPC分类号： H04L25/02 ,  H04B1/69 ,  H04L7/06 ,  H04L13/10

CPC分类号： H04L25/0236

摘要： Techniques for incorporating non-pilot symbols along with pilot symbols to improve the estimate of the characteristics (e.g., amplitude and phase) of a communication link. A pilot filter weighs samples corresponding to pilot and non-pilot symbol by different sets of coefficients, which have values determined by and/or corresponding to the confidence in the detected sample. Samples corresponding to pilot symbols are typically associated with higher degree of confidence and are weighted more (e.g., with weights of 1.0). Samples corresponding to non-pilot symbols are typically associated with lower confidence and are weighted with values that may be variable and dependent on the degree of confidence in the samples (e.g., with weights ranging from 0.0 up to 1.0). The weights are updated based on a particular estimator such as a MAP (Maximum a Posteriori) estimator, a MLE (Maximum Likelihood Estimator), or some other estimator.

摘要翻译： 用于将非导频符号与导频符号一起并入以改进通信链路的特性（例如，幅度和相位）的估计的技术。 导频滤波器通过不同的系数集来对与导频符号和非导频符号相对应的采样值，该系数具有由检测样本中的置信度确定的值和/或对应于其的值。 对应于导频符号的样本通常与更高的置信度相关联，并且被加权更多（例如，具有1.0的权重）。 对应于非导频符号的采样通常与较低置信度相关联，并且可以是可变的并且取决于采样中的置信度（例如，权重范围从0.0到1.0）的值来加权。 基于诸如MAP（最大后验）估计器，MLE（最大似然估计器）或一些其它估计器的特定估计器来更新权重。

公开(公告)号：US06940894B2

公开(公告)日：2005-09-06

申请号：US10010586

申请日：2001-11-08

申请人： Andrew Sendonaris

发明人： Andrew Sendonaris

IPC分类号： H04B1/707 ,  H04B1/00 ,  H04B7/005 ,  H04B7/26 ,  H04B1/69 ,  H04B1/713

CPC分类号： H04W52/228 ,  H04B2201/70701 ,  H04W52/08 ,  H04W52/226

摘要： In one embodiment, the invention is directed toward methods for estimating the power of a received signal encoded with both pilot and non-pilot symbols. The method may include separately accumulating the pilot symbols and the non-pilot symbols and then estimating signal power by calculating a weighted sum of the accumulated pilot and non-pilot symbols. In this manner, a more accurate estimate of the power of the received signal can be obtained.

摘要翻译： 在一个实施例中，本发明涉及用于估计用导频符号和非导频符号两者编码的接收信号的功率的方法。 该方法可以包括分别累积导频符号和非导频符号，然后通过计算累加的导频符号和非导频符号的加权和来估计信号功率。 以这种方式，可以获得对接收信号的功率的更准确的估计。

公开(公告)号：US6167035A

公开(公告)日：2000-12-26

申请号：US987512

申请日：1997-12-09

申请人： Venugopal Veeravalli ,  Andrew Sendonaris ,  Nikhil Jain ,  Seshu Madhava Peddy

发明人： Venugopal Veeravalli ,  Andrew Sendonaris ,  Nikhil Jain ,  Seshu Madhava Peddy

IPC分类号： H04W36/18 ,  H04W36/38 ,  H04Q7/00

CPC分类号： H04W36/18 ,  H04W36/38

摘要： A method for designing a soft handoff region in a wireless communications system. An inner region having an outer edge defined by a first radius is selected, wherein a mobile station communicates only with the base station within the inner region and has a selected outage probability at the outer edge of the inner region. Next, a soft handoff region having an outer edge defined by a second radius and an inner edge defined by the first radius is selected, wherein the mobile station within the soft handoff region has the selected outage probability. Actual coverage region having an outer edge defined by a third radius, wherein the third radius is selected to match soft handoff regions of other cells adjacent to the cell.

摘要翻译： 一种在无线通信系统中设计软切换区域的方法。 选择具有由第一半径限定的外边缘的内部区域，其中移动站仅在内部区域内与基站通信，并且在内部区域的外部边缘处具有选择的中断概率。 接下来，选择具有由第二半径限定的外边缘和由第一半径限定的内边缘的软切换区域，其中，软切换区域内的移动台具有选择的中断概率。 实际覆盖区域具有由第三半径限定的外边缘，其中选择第三半径以匹配与小区相邻的其他小区的软切换区域。