公开(公告)号：US07720472B1

公开(公告)日：2010-05-18

申请号：US09661967

申请日：2000-09-14

申请人： Ying Feria ,  Ming Chang ,  Donald C. D. Chang

发明人： Ying Feria ,  Ming Chang ,  Donald C. D. Chang

IPC分类号： H04W4/00

CPC分类号： H04B7/18504

摘要： A system has a stratospheric platform with a payload controller and a phased array antenna having a plurality of elements. A gateway station communicates with the stratospheric platform. The gateway station scales the plurality of elements to form a reconfigurable plurality of beams. The gateway station communicates a control signal to the stratospheric platform to communicate a scaling of the elements. The stratospheric platform configures the elements of the phased array antenna according to the scaling using adaptive interference rejections.

摘要翻译： 系统具有带有有效载荷控制器的平流层平台和具有多个元件的相控阵天线。 网关站与平流层平台通信。 网关站缩放多个元素以形成可重构的多个波束。 网关站将控制信号传送到平流层平台以传送元素的缩放。 平流层平台根据使用自适应干扰抑制的缩放来配置相控阵天线的元件。

公开(公告)号：US06763242B1

公开(公告)日：2004-07-13

申请号：US09661726

申请日：2000-09-14

申请人： Ying Feria ,  Ming Chang ,  Donald C. D. Chang ,  Frank A. Hagen ,  Alan Cha

发明人： Ying Feria ,  Ming Chang ,  Donald C. D. Chang ,  Frank A. Hagen ,  Alan Cha

IPC分类号： H04B700

CPC分类号： H04B7/18506

摘要： A communications system and method of operating the communications system includes a high altitude communication device that communicates with a plurality of user terminals and a gateway station. The gateway station couples the users to terrestrial networks and other users. The high altitude communication device has gateway station that assigns a first code to a beam of a first plurality of users. The gateway station continually determines whether an interference occurs between the first beam and the second beam by determining whether the first interference contour intersects the second interference contour when the first interference contour intersects the second interference contour. The gateway station declares an interference when the contours intersect and reassigns a second resource to the first beam.

摘要翻译： 通信系统和操作通信系统的方法包括与多个用户终端和网关站通信的高空通信设备。 网关站将用户耦合到地面网络和其他用户。 高空通信设备具有将第一代码分配给第一多个用户的波束的网关站。 当第一干涉轮廓与第二干涉轮廓相交时，通过确定第一干涉轮廓是否与第二干涉轮廓相交，连续地确定在第一光束和第二光束之间是否发生干涉。 当轮廓相交并将第二个资源重新分配给第一个波束时，网关站会声明干扰。

公开(公告)号：US06388615B1

公开(公告)日：2002-05-14

申请号：US09587758

申请日：2000-06-06

申请人： Donald C. D. Chang ,  Ying Feria ,  Weizheng Wang ,  Alan Cha ,  Ming Chang ,  Frank A. Hagen ,  Kar W. Yung

发明人： Donald C. D. Chang ,  Ying Feria ,  Weizheng Wang ,  Alan Cha ,  Ming Chang ,  Frank A. Hagen ,  Kar W. Yung

IPC分类号： H01Q322

CPC分类号： H04B7/18504 ,  H04B7/0617 ,  H04B7/086

摘要： A system and method for tracking a user. The system is adapted for use in a wireless communication system and creates a plurality of beams within a coverage area. A first beam is directed at a user in a first microcell and a number of additional beams illuminate microcells immediately adjacent the first microcell. The system is equipped with a mechanism for detecting movement of the user from the first microcell to one of the immediately adjacent microcells. On the detection of movement of the user, the system redirects the first beam from the first microcell to a second microcell, the second microcell being one of the adjacent microcells. In the illustrative embodiment, the system is implemented in a stratospheric platform based communication system including a hub adapted to communicate with a stratospheric platform. A transceiver and a phased array antenna are disposed on the platform to communicate with the hub and with the user. A second antenna is provided on the platform to communicate with the hub. Beamforming and direction are implemented on the hub and communicated to the platform. The user's position is detected with a global positioning system receiver, by measuring the strength of a signal received from the user, or by other suitable means. On detection of user movement from the first microcell, the beamforming system redirects the beam to follow the user into a second microcell. Additional beams around the user's microcell are illuminated to facilitate detection of the users movement.

公开(公告)号：US06567052B1

公开(公告)日：2003-05-20

申请号：US09718973

申请日：2000-11-21

申请人： Weizheng Wang ,  Donald C. D. Chang ,  Ming Chang ,  Ying Feria

发明人： Weizheng Wang ,  Donald C. D. Chang ,  Ming Chang ,  Ying Feria

IPC分类号： H01Q300

CPC分类号： H01Q1/28 ,  H01Q3/02

摘要： A stratospheric platform communication system (10) having antenna boresight angles (EL, AZ) that can be adjusted by an adjustable payload antenna (40) according to the requirements of a specific application. The present invention provides an efficient use of available resources by allowing platform systems (10) and GEO satellite systems to share the radio frequency spectrum without interference, and improves the coverage area provided by a stratospheric platform system by allocating stratospheric platforms (12) to specific coverage areas in combination thereby increasing coverage capacity in high traffic areas.

摘要翻译： 具有可根据特定应用的要求由可调节有效载荷天线（40）调节的具有天线视轴角（EL，AZ）的平流层平台通信系统（10）。 本发明通过允许平台系统（10）和GEO卫星系统在没有干扰的情况下共享无线电频谱来提供可用资源的有效使用，并且通过将平流层平台（12）分配给特定的平流层平台系统来提高由平流层平台系统提供的覆盖区域 覆盖区域相结合，从而提高高交通区域的覆盖能力。

公开(公告)号：US07257418B1

公开(公告)日：2007-08-14

申请号：US09652862

申请日：2000-08-31

申请人： Donald C. D. Chang ,  Alan Cha ,  Ying Feria

发明人： Donald C. D. Chang ,  Alan Cha ,  Ying Feria

IPC分类号： H04Q7/20

CPC分类号： H04B7/18545 ,  H04B7/18504 ,  H04W84/06

摘要： A method for rapid acquisition of a specific subscriber by a ground-based beamformer includes the steps of defining a coverage area as an arrangement of a plurality of cells wherein one of the plurality of cells includes a specific subscriber; defining a partition of cell clusters wherein one of the cell clusters includes the one of the plurality of cells that includes the specific subscriber; forming a beam that corresponds to an area of one of the cell clusters; and scanning the beam to the cell cluster that includes the specific subscriber.

摘要翻译： 一种用于通过地面波束形成器快速获取特定用户的方法包括以下步骤：将覆盖区域定义为多个小区的布置，其中多个小区中的一个小区包括特定订户; 定义小区簇的分区，其中小区簇中的一个包括包括特定用户的多个小区中的一个小区; 形成对应于一个所述细胞簇的区域的束; 并将光束扫描到包括特定订户的小区集群。

公开(公告)号：US07046718B1

公开(公告)日：2006-05-16

申请号：US09669095

申请日：2000-09-25

申请人： Kar Yung ,  Frank A. Hagen ,  Ying Feria ,  Donald C. D. Chang

发明人： Kar Yung ,  Frank A. Hagen ,  Ying Feria ,  Donald C. D. Chang

IPC分类号： H04B1/69 ,  H03D3/24

CPC分类号： H04B7/18589 ,  H03J1/00 ,  H04B1/7097

摘要： A method for coherent phase synchronous CDMA communications between a gateway and multiple subscribers via multiple transponder platforms that includes the step of synchronizing a local reference clock for each subscriber in a service area to a single master reference clock for multiple transponder platforms wherein the distance separating the transponder platforms is constrained to a range wherein the local reference clocks for all subscribers have substantially the same phase with respect to the master reference clock.

摘要翻译： 一种用于经由多个应答器平台的网关和多个用户之间的相干相位同步CDMA通信的方法，其包括将服务区域中的每个用户的本地参考时钟同步到多个应答器平台的单个主参考时钟的步骤，其中， 应答器平台被限制到一个范围，其中所有用户的本地参考时钟相对于主参考时钟具有基本上相同的相位。

公开(公告)号：US06914557B2

公开(公告)日：2005-07-05

申请号：US09947422

申请日：2001-09-05

申请人： Donald C. D. Chang ,  Ying Feria ,  Weizheng Wang ,  Alan G. Cha ,  Ming U. Chang ,  Frank A. Hagen ,  Kar W. Yung

发明人： Donald C. D. Chang ,  Ying Feria ,  Weizheng Wang ,  Alan G. Cha ,  Ming U. Chang ,  Frank A. Hagen ,  Kar W. Yung

IPC分类号： H04B7/06 ,  H04B7/08 ,  H04B7/185

CPC分类号： H04B7/18504 ,  H04B7/0617 ,  H04B7/086

摘要： A system and method for tracking a user. The system is adapted for use in a wireless communication system and creates a plurality of beams within a coverage area. A first beam is directed at a user in a first microcell and a number of additional beams illuminate microcells immediately adjacent the first microcell. The system is equipped with a mechanism for detecting movement of the user from the first microcell to one of the immediately adjacent microcells. On the detection of movement of the user, the system redirects the first beam from the first microcell to a second microcell, the second microcell being one of the adjacent microcells. In the illustrative embodiment, the system is implemented in a stratospheric platform based communication system including a hub adapted to communicate with a stratospheric platform. A transceiver and a phased array antenna are disposed on the platform to communicate with the hub and with the user. A second antenna is provided on the platform to communicate with the hub. Beamforming and direction are implemented on the hub and communicated to the platform. The user's position is detected with a global positioning system receiver, by measuring the strength of a signal received from the user, or by other suitable means. On detection of user movement from the first microcell, the beamforming system redirects the beam to follow the user into a second microcell. Additional beams around the user's microcell are illuminated to facilitate detection of the users movement.

摘要翻译： 用于跟踪用户的系统和方法。 该系统适用于无线通信系统，并在覆盖区域内创建多个波束。 第一光束被引导到第一微小区中的用户，并且多个附加光束照亮紧邻第一微小区的微小区。 该系统配备有用于检测用户从第一微小区到紧邻的微小区之一的移动的机制。 在检测用户的移动时，系统将第一光束从第一微小区重定向到第二微小区，第二微小区是相邻微小区之一。 在说明性实施例中，该系统在基于平流层平台的通信系统中实现，其包括适于与平流层平台通信的集线器。 收发器和相控阵天线设置在平台上以与集线器和用户通信。 在平台上提供第二天线以与集线器通信。 波束形成和方向在集线器上实现并传达到平台。 通过测量从用户接收的信号的强度，或通过其他合适的方式，用全球定位系统接收机检测用户的位置。 在检测到来自第一微小区的用户移动时，波束成形系统重定向波束以跟随用户进入第二微小区。 用户微单元周围的附加光束被照亮以便于检测用户的移动。

公开(公告)号：US06757546B1

公开(公告)日：2004-06-29

申请号：US09644225

申请日：2000-08-21

申请人： Frank A. Hagen ,  Kar W. Yung ,  Ying Feria ,  Donald C. D. Chang

发明人： Frank A. Hagen ,  Kar W. Yung ,  Ying Feria ,  Donald C. D. Chang

IPC分类号： H04B1500

CPC分类号： H04B7/18504 ,  H04B7/18506 ,  H04B7/18532 ,  H04B7/18534 ,  H04B7/212

摘要： A mobile wireless communications system including a plurality of individual transponding nodes of various types, all in communication with a central processing hub. A local user signal is processed by the central processing hub and radiated through multiple paths to a plurality of the plurality of individual transponding platforms simultaneously. The signal is then re-radiated by each of the plurality of the plurality of individual transponding platforms to a mobile terminal that receives the re-radiated signal from the plurality of the plurality of individual transponding platforms coherently and in phase. The central hub synchronizes both the signals received and transmitted from each user through one or more of the transponding nodes. This synchronization is such that the relative arrival time of the PN encoded data in the user signals is synchronized to within a fraction of a chip in both the forward and return links. The central hub also synchronizes the carrier phase of the user signals to within a fraction of a wavelength in both the forward and return links.

摘要翻译： 一种移动无线通信系统，包括多个各种类型的单个转发节点，全部与中央处理集线器通信。 本地用户信号由中央处理集线器处理，并通过多个路径同时辐射到多个单独的转发平台。 然后，信号被多个多个单独的转发平台中的每一个重新辐射到移动终端，该移动终端相干地并且相位地从多个多个单独的转发平台接收再发射的信号。 中心枢纽同时通过一个或多个转发节点从每个用户接收和发送的信号。 这种同步使得PN编码数据在用户信号中的相对到达时间在前向链路和返回链路中同步到芯片的一小部分内。 中央集线器还将用户信号的载波相位同步到前向链路和返回链路中的波长的一小部分内。

公开(公告)号：US06751458B1

公开(公告)日：2004-06-15

申请号：US09612465

申请日：2000-07-07

申请人： Weizheng Wang ,  Donald C. D. Chang ,  Ming U. Chang ,  Ying Feria ,  Alan Cha

发明人： Weizheng Wang ,  Donald C. D. Chang ,  Ming U. Chang ,  Ying Feria ,  Alan Cha

IPC分类号： H04Q720

CPC分类号： H04B7/2041 ,  H04B7/18539

摘要： A communication system has a high altitude communication device generating a plurality of user link beams having a first communication characteristic and a feeder link having a first communication characteristic. A gateway terminal receives the user link beam. A user terminal receives at least one of the user link beams. The plurality of user link beams comprises a first user link beam within a first cell and a first isolation zone outside the first cell. The plurality of user link beams comprises a second user link beam having the first communication characteristic and positioned within a second cell and a second isolation zone outside said second cell. The second isolation zone overlaps the first isolation zone. The feeder link is positioned within the first isolation zone and the second isolation zone. The feeder link has the first communication characteristic.

摘要翻译： 通信系统具有生成具有第一通信特性的多个用户链路波束和具有第一通信特性的馈线链路的高空通信设备。 网关终端接收用户链路波束。 用户终端接收至少一个用户链路波束。 多个用户链路波束包括第一小区内的第一用户链路波束和第一小区外的第一隔离区域。 多个用户链路波束包括具有第一通信特性并位于第二小区内的第二用户链路波束和位于所述第二小区之外的第二隔离区域。 第二隔离区与第一隔离区重叠。 馈送链路位于第一隔离区和第二隔离区内。 馈线链路具有第一通信特性。

公开(公告)号：US07200360B1

公开(公告)日：2007-04-03

申请号：US09594374

申请日：2000-06-15

申请人： Donald C. D. Chang ,  Weizheng Wang ,  Wah Lim ,  Ying Feria ,  Ming U. Chang

发明人： Donald C. D. Chang ,  Weizheng Wang ,  Wah Lim ,  Ying Feria ,  Ming U. Chang

IPC分类号： H04B7/185

CPC分类号： H04B7/18504 ,  H04B7/19

摘要： A communications system (10) and method of operating the communications system includes a first stratospheric platform generating a second beam having a frequency the same as a satellite beam to the same service area. User terminals are configured to receive the first beam or the second beam.

摘要翻译： 通信系统（10）和操作通信系统的方法包括：第一平流层平台，产生具有与卫星波束相同频率的第二波束到同一服务区域。 用户终端被配置为接收第一光束或第二光束。