公开(公告)号：US06519478B1

公开(公告)日：2003-02-11

申请号：US09502287

申请日：2000-02-11

申请人： Shimon B. Scherzer ,  Piu Bill Wong

发明人： Shimon B. Scherzer ,  Piu Bill Wong

IPC分类号： H04B138

CPC分类号： H04B7/0408 ,  H01Q1/246 ,  H01Q3/2605 ,  H04B7/0491 ,  H04B7/0615 ,  H04B7/0897

摘要： A wireless communication system base station uses a dual-polarized antenna array to receive two signal groups having orthogonal polarizations. In a preferred embodiment, a first signal group is received using a first sub-array of odd-numbered antenna elements, while a second signal group is received using a second sub-array of even-numbered antenna elements. Dipoles within the odd-numbered elements are selected so that they have a common polarization orthogonal to the dipoles selected in the even-numbered elements. The two signal groups thus have orthogonal polarizations. Base station signal processing hardware performs separate spatial channel estimation for these two groups, and uses the polarization diversity to improve performance in both the uplink and downlink. The use of polarization diversity allows the physical dimensions of the antenna array to be kept to a minimum.

摘要翻译： 无线通信系统基站使用双极化天线阵列来接收具有正交偏振的两个信号组。 在优选实施例中，使用奇数天线元件的第一子阵列接收第一信号组，而使用偶数天线元件的第二子阵列接收第二信号组。 选择奇数元件内的偶极子，使得它们具有与偶数元件中选择的偶极子正交的共同极化。 因此，两个信号组具有正交偏振。 基站信号处理硬件对这两个组进行单独的空间信道估计，并利用极化分集来提高上行链路和下行链路的性能。 使用极化分集可以使天线阵列的物理尺寸保持最小。

公开(公告)号：US06453177B1

公开(公告)日：2002-09-17

申请号：US09511665

申请日：2000-02-23

申请人： Piu Bill Wong ,  Shimon B. Scherzer

发明人： Piu Bill Wong ,  Shimon B. Scherzer

IPC分类号： H04B138

CPC分类号： H01Q1/246 ,  H01Q3/2605 ,  H04B7/0408 ,  H04B7/0617 ,  H04B7/0619 ,  H04W52/42

摘要： Traffic channel signals and pilot channel signals are transmitted from a base station to a mobile station using different beams. The beam carrying the pilot channel signal is a sector-wide beam, while the beam carrying the traffic channel signal has been minimized based on the number of frame errors associated with the traffic channel signal. The pilot and traffic channel signals are also phase matched. All traffic channel antenna beams in the same direction are maintained at approximately the same effective radiated power.

摘要翻译： 业务信道信道和导频信道信号使用不同的波束从基站发送到移动台。 携带导频信道信号的波束是扇区宽的波束，而携带业务信道信号的波束已经基于与业务信道信号相关联的帧错误的数量被最小化。 导频和业务信道信号也是相位匹配的。 所有相同方向的通信天线波束都保持大致相同的有效辐射功率。

公开(公告)号：US06847832B2

公开(公告)日：2005-01-25

申请号：US09803356

申请日：2001-03-09

申请人： Piu Bill Wong ,  Alexander V. Tesler ,  Shimon B. Scherzer

发明人： Piu Bill Wong ,  Alexander V. Tesler ,  Shimon B. Scherzer

IPC分类号： H04B7/04 ,  H04W16/28 ,  H04Q7/00

CPC分类号： H04W16/28 ,  H04B7/0408 ,  H04B7/0491

摘要： Systems and methods providing analysis of channel characteristics for determining a optimum beam configuration for use therein are shown. Preferably, the direction and angle spread for subscriber units are determined in order to provide a beam for use therewith. According to a preferred embodiment, forward link characteristics are emulated in the reverse link in order to identify an optimum beam configuration. This optimum beam configuration is then preferably adapted for use in the forward link. Preferably, the present invention operates to recognize subscriber units which are spatially separated such that the optimized beams may be utilized in providing simultaneous communications therewith.

摘要翻译： 示出了提供用于确定用于其中的最佳波束配置的通道特性分析的系统和方法。 优选地，确定用户单元的方向和角度扩展，以提供与其一起使用的波束。 根据优选实施例，在反向链路中仿真前向链路特性，以便识别最佳波束配置。 然后，该最佳波束配置优选适于在前向链路中使用。 优选地，本发明用于识别在空间上分离的用户单元，使得优化的波束可以用于提供与其同时的通信。

公开(公告)号：US06760603B1

公开(公告)日：2004-07-06

申请号：US10361787

申请日：2003-02-10

申请人： Shimon B. Scherzer ,  Piu Bill Wong

发明人： Shimon B. Scherzer ,  Piu Bill Wong

IPC分类号： H04B138

CPC分类号： H04B7/0491 ,  H01Q1/246 ,  H01Q3/2605 ,  H04B7/0408 ,  H04B7/0615 ,  H04B7/0897

摘要： A wireless communication system base station uses a dual-polarized antenna array to receive two signal groups having orthogonal polarizations. In a preferred embodiment a first signal group is received using a first sub-array of odd-numbered antenna elements, while a second signal group is received using a second sub-array of even-numbered antenna elements. Dipoles within the odd-numbered elements are selected so that they have a common polarization orthogonal to the dipoles selected in the even-numbered elements. The two signal groups thus have orthogonal polarizations. Base station signal processing hardware performs separate spatial channel estimation for these two groups, and uses the polarization diversity to improve performance in both the uplink and downlink. The use of polarization diversity allows the physical dimensions of the antenna array to be kept to a minimum.

摘要翻译： 无线通信系统基站使用双极化天线阵列来接收具有正交偏振的两个信号组。 在优选实施例中，使用奇数天线元件的第一子阵列接收第一信号组，而使用偶数天线元件的第二子阵列接收第二信号组。 选择奇数元件内的偶极子，使得它们具有与偶数元件中选择的偶极子正交的共同极化。 因此，两个信号组具有正交偏振。 基站信号处理硬件对这两个组进行单独的空间信道估计，并利用极化分集来提高上行链路和下行链路的性能。 使用极化分集可以使天线阵列的物理尺寸保持最小。

公开(公告)号：US07085240B2

公开(公告)日：2006-08-01

申请号：US09874930

申请日：2001-06-05

申请人： Jiangfeng Wu ,  Piu Bill Wong ,  Shimon B. Scherzer

发明人： Jiangfeng Wu ,  Piu Bill Wong ,  Shimon B. Scherzer

IPC分类号： H04Q7/00 ,  H04B17/00

CPC分类号： H04W72/121 ,  H04B1/7103 ,  H04B2201/709709 ,  H04W16/28 ,  H04W52/26

摘要： Disclosed are systems and methods which proactively determine particular access terminals which are compatible for simultaneous communication at a high data rate and preferred embodiments provide scheduling of simultaneous communications such that data communication is optimized. Preferred embodiments of the present invention utilize a multiple element antenna array, and associated array response vectors associated with narrow antenna beam forming techniques, (adaptive array antennas) to identify compatible access terminals, such as by calculating a correlation between particular access terminals and, preferably utilizing a predetermined correlation threshold, identifying suitably uncorrelated access terminals. Using such information embodiments of the present invention may determine which particular access terminals may be controlled to transmit at a high data rate at a same time. Embodiments of the present invention are operable with respect to the forward and/or reverse links.

公开(公告)号：US06799026B1

公开(公告)日：2004-09-28

申请号：US09695459

申请日：2000-10-24

申请人： Shimon B. Scherzer ,  Piu Bill Wong

发明人： Shimon B. Scherzer ,  Piu Bill Wong

IPC分类号： H04B700

CPC分类号： H04B7/0805

摘要： A diversity reception handset includes a receiver for receiving pilot and plural increments of traffic sent from a base station within a service area of a wireless communications network. The handset includes at least two antennas, a switch for switching a receiver between the two antennas, a time-of-arrival searcher circuit connected to the receiver and responsive to the pilot for determining time of arrival of the received signals and expected time of arrival of each increment, and a controller for controlling the switch based upon determined expected time of arrival of each increment.

摘要翻译： 分集接收手机包括用于从无线通信网络的服务区域内的基站接收导频和从基站发送的多个增量的接收机的接收机。 手机包括至少两个天线，用于在两个天线之间切换接收机的开关，连接到接收机的到达时间的搜索器电路，并且响应于导频来确定接收信号的到达时间和预期的到达时间 以及控制器，用于基于确定的每个增量的到达时间来控制开关。

公开(公告)号：US06233466B1

公开(公告)日：2001-05-15

申请号：US09289774

申请日：1999-04-08

申请人： Piu Bill Wong ,  Shimon B. Scherzer

发明人： Piu Bill Wong ,  Shimon B. Scherzer

IPC分类号： H04Q700

CPC分类号： H04W16/28 ,  H01Q1/246 ,  H01Q25/00 ,  H04B7/0408

摘要： A system and method is provided for adaptive downlink beamforming in a wireless communication system. The technique involves using an antenna array to transmit downlink control signals from the base station to the subscribers in the cell. Rather than transmitting the control signals in a given direction continuously, the control signals in the present system are transmitted for only a short time interval using one of a sequence of specified directional beams. After a predetermined sweep cycle period, the control signal beam is then retransmitted again in the same direction. Typically, during this cycle period control signal beams are also transmitted in other specified directions. In one embodiment, for example, the control signal beams sweep around the base station once during each cycle. A subscriber located in the cell will receive a repeating pattern of signal pulses corresponding to the periodic beams directed toward the subscriber. Because the sweeping beam pattern is known a priori, after a small number of sweeping cycle periods, the subscriber can easily estimate from the pattern of received signal pulses the optimal downlink beam or combination of beams. Techniques are provided that allow the optimal downlink beam to be estimated with angular resolution higher than the resolution of the sweeping beams. This optimal downlink beam information is then transmitted back to the base station, which uses it to transmit information to the subscriber using the optimal downlink beam, or combination of beams. Meanwhile, the subscriber continues to monitor the pattern of control beam pulses, and notifies the base station if the optimal downlink beam or beams changes.

摘要翻译： 提供了一种用于无线通信系统中的自适应下行链路波束成形的系统和方法。 该技术涉及使用天线阵列来从基站向小区中的用户发送下行链路控制信号。 不是连续地在给定方向上发送控制信号，而是使用指定的定向波束的序列中的一个，仅在短时间间隔内发送本系统中的控制信号。 在预定的扫描循环周期之后，再次以相同的方向重新发送控制信号光束。 通常，在该周期期间，控制信号光束也在其他指定方向上传输。 在一个实施例中，例如，控制信号光束在每个周期期间扫描基站一次。 位于小区中的用户将接收与指向用户的周期性波束对应的信号脉冲的重复模式。 因为扫描波束图案是先验已知的，所以在少量的扫描循环周期之后，用户可以容易地从接收信号脉冲的模式估计最佳下行链路波束或波束组合。 提供了允许以高于扫掠光束的分辨率的角度分辨率估计最佳下行链路波束的技术。 然后将该最佳下行链路波束信息发送回基站，基站使用它使用最佳下行链路波束或波束的组合向用户发送信息。 同时，用户继续监视控制波束脉冲的模式，并且通知基站最佳下行链路波束或波束是否改变。

公开(公告)号：US07016649B1

公开(公告)日：2006-03-21

申请号：US09803718

申请日：2001-03-09

申请人： Ravi Narasimhan ,  Piu Bill Wong ,  Shimon B. Scherzer ,  Jiangfeng Wu

发明人： Ravi Narasimhan ,  Piu Bill Wong ,  Shimon B. Scherzer ,  Jiangfeng Wu

IPC分类号： H04Q7/20

CPC分类号： H01Q25/00 ,  H01Q1/246 ,  H04B7/0695 ,  H04W52/34

摘要： The present invention utilizes adaptive antenna arrays at a base station to increase the forward link capacity of mobile data systems. One or more simultaneous forward link beams are formed and are switched (or hopped) in a time division manner among subscribers. The beam hopping sequence is randomized by varying the time slot and/or carrier frequency of each subscriber. In space-time hopping, the position within a frame of the time slot for each subscriber is varied in a pseudo random sequence. In space-frequency hopping, the carrier frequency for each frame is varied in a pseudo random sequence. The pseudo random beam hopping sequence provides a gain due to interference diversity in addition to the antenna array gain. Forward link beam forming algorithms use space-time or space-frequency hopping to increase the capacity of mobile data systems.

摘要翻译： 本发明在基站利用自适应天线阵列来增加移动数据系统的前向链路容量。 一个或多个同时的前向链路波束被形成并且在用户之间以时分方式被切换（或跳转）。 波束跳频序列通过改变每个用户的时隙和/或载波频率来随机化。 在空时跳频中，每个用户的时隙的帧内的位置以伪随机序列变化。 在空时跳频中，每个帧的载波频率以伪随机序列变化。 除了天线阵列增益之外，伪随机波束跳变序列还提供了由于干扰分集引起的增益。 前向链路波束形成算法使用时空或空跳跳频来增加移动数据系统的容量。

公开(公告)号：US06901062B2

公开(公告)日：2005-05-31

申请号：US09727226

申请日：2000-11-30

申请人： Shimon B. Scherzer ,  Piu Bill Wong

发明人： Shimon B. Scherzer ,  Piu Bill Wong

IPC分类号： H04B7/06 ,  H04B7/08 ,  H04B7/216

CPC分类号： H04B7/0684 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/086

摘要： The invention provides systems and methods for providing improved wireless data communication. Preferred embodiments of the present invention utilize multiple antenna beams in the forward link to provide increased forward link capacity and/or improved forward link signal quality. Multiple orthogonal sub-pilots are transmitted from a plurality of antenna elements for use in determining forward link channel characteristics according to a preferred embodiment. Forward link channel estimates may then be made by the preferred embodiment subscriber units and provided in a reverse link control channel to the corresponding base station. Multiple beams may also be utilized in the reverse link to provide increased reverse link capacity, such as for use in providing feedback of forward link channel estimates.

摘要翻译： 本发明提供了用于提供改进的无线数据通信的系统和方法。 本发明的优选实施例利用前向链路中的多个天线波束来提供增加的前向链路容量和/或改进的前向链路信号质量。 根据优选实施例，从多个天线元件发送多个正交子导频以用于确定前向链路信道特性。 然后可以由优选实施例的用户单元进行前向链路信道估计，并在反向链路控制信道中提供给对应的基站。 也可以在反向链路中使用多个波束以提供增加的反向链路容量，例如用于提供前向链路信道估计的反馈。

公开(公告)号：US06697644B2

公开(公告)日：2004-02-24

申请号：US09777613

申请日：2001-02-06

申请人： Shimon B. Scherzer ,  Piu Bill Wong ,  Jiangfeng Wu ,  Alexander V. Tesler

发明人： Shimon B. Scherzer ,  Piu Bill Wong ,  Jiangfeng Wu ,  Alexander V. Tesler

IPC分类号： H04B138

CPC分类号： H04W16/28 ,  H04W24/02

摘要： The invention provides optimization of communication links by using a control loop with a relatively long time constant and adjusting particular communication links based upon feedback from a virtual communication unit associated with a communication link. A preferred embodiment of the invention optimizes wireless links in a point to multipoint system, such as a cellular communication system, by dividing a service area into segments and adjusting an antenna beam associated with a segment when a mobile unit is operable therein. This preferred embodiment results in convergence upon an optimized communication link over time and is suitable for use even with highly mobile systems. Preferred embodiments of the invention provide control loops for location or segment optimization as well as for individual optimization.

摘要翻译： 本发明通过使用具有相对长的时间常数的控制回路来提供通信链路的优化，并且基于来自与通信链路相关联的虚拟通信单元的反馈来调整特定的通信链路。 本发明的优选实施例通过将服务区域划分成多个段来调整点对多点系统（诸如蜂窝通信系统）中的无线链路，并且当移动单元可操作时调整与段相关联的天线波束。 该优选实施例导致随着时间推移优化的通信链路的收敛，并且甚至适用于高度移动的系统。 本发明的优选实施例提供用于位置或段优化以及单独优化的控制回路。