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1. 发明授权

US07929984B2 Multiple basestation communication system having adaptive antennas 有权
标题翻译：具有自适应天线的多个基站通信系统
公开(公告)号：US07929984B2
公开(公告)日：2011-04-19
申请号：US11652946
申请日：2007-01-12
申请人： Donald C. D. Chang , Wah L. Lim , Ming U. Chang
发明人： Donald C. D. Chang , Wah L. Lim , Ming U. Chang
IPC分类号： H04B7/00 , H04M1/00
CPC分类号： H04W16/28 , H01Q1/246 , H01Q3/2605 , H01Q25/00 , H04B7/0408 , H04W16/26 , H04W84/14 , H04W88/085
摘要： A communication system has a first plurality of wireless basestations having adaptive antennas with a plurality of main array antenna elements for generating a plurality of communication beams. The system further includes a gateway station coupled to the first plurality of wireless basestations. The gateway station forms a plurality of beams commands by communicating plurality of a control signals to the first plurality of wireless basestations to form the communication beams. A second plurality of wireless base stations having a second plurality of adaptive antennas with a second plurality of main array antenna elements for generating a plurality of communication beams to communicate with said mobile user. A gateway station coupled to said first plurality of wireless base stations and said second plurality of wireless base stations through a plurality of multiple dynamic links, said gateway station forming a plurality of beams with a plurality of data packets by communicating plurality of a control signals to the base station to form the communication beams using at least one link from a first base station and a second link through a second of the base station.
摘要翻译：通信系统具有第一多个无线基站，其具有多个主阵列天线元件的自适应天线，用于产生多个通信波束。系统还包括耦合到第一多个无线基站的网关站。网关站通过将多个控制信号传送到第一多个无线基站来形成多个波束命令，以形成通信波束。具有第二多个主阵列天线元件的第二多个自适应天线的第二多个无线基站，用于产生多个通信波束以与所述移动用户通信。通过多个多个动态链路耦合到所述第一多个无线基站和所述第二多个无线基站的网关站，所述网关站通过将多个控制信号传送到多个数据分组来形成具有多个数据分组的多个波束该基站使用来自第一基站的至少一个链路和通过第二基站的第二链路来形成通信波束。

2. 发明申请

US20090011789A1 Multiple basestation communication system having adaptive antennas 有权
公开(公告)号：US20090011789A1
公开(公告)日：2009-01-08
申请号：US11652946
申请日：2007-01-12
申请人： Donald C. D. Chang , Wah L. Lim , Ming U. Chang
发明人： Donald C. D. Chang , Wah L. Lim , Ming U. Chang
IPC分类号： H04Q7/20
CPC分类号： H04W16/28 , H01Q1/246 , H01Q3/2605 , H01Q25/00 , H04B7/0408 , H04W16/26 , H04W84/14 , H04W88/085
摘要： A communication system has a first plurality of wireless basestations having adaptive antennas with a plurality of main array antenna elements for generating a plurality of communication beams. The system further includes a gateway station coupled to the first plurality of wireless basestations. The gateway station forms a plurality of beams commands by communicating plurality of a control signals to the first plurality of wireless basestations to form the communication beams. A second plurality of wireless base stations having a second plurality of adaptive antennas with a second plurality of main array antenna elements for generating a plurality of communication beams to communicate with said mobile user. A gateway station coupled to said first plurality of wireless base stations and said second plurality of wireless base stations through a plurality of multiple dynamic links, said gateway station forming a plurality of beams with a plurality of data packets by communicating plurality of a control signals to the base station to form the communication beams using at least one link from a first base station and a second link through a second of the base station.

3. 发明授权

US07400857B2 Communication system using multiple link terminals 有权
标题翻译：通信系统使用多个链路终端
公开(公告)号：US07400857B2
公开(公告)日：2008-07-15
申请号：US09968352
申请日：2001-09-28
申请人： Donald C. D. Chang , Grant J. Beatson , Wah L. Lim , Ming U. Chang
发明人： Donald C. D. Chang , Grant J. Beatson , Wah L. Lim , Ming U. Chang
IPC分类号： H04B7/185
CPC分类号： H01Q1/007 , H01Q3/26 , H04B7/0408 , H04B7/18506 , H04B7/18508
摘要： A communication system has a communication infrastructure including at least two devices from the group including a cell tower, a first satellite constellation and a second satellite constellation, a stratospheric platform, that are coupled to user terminals through a plurality of dynamic links. The terminal monitors and changes the multiple and dynamic links as the position of the user terminal relative to the said at least two devices.
摘要翻译：通信系统具有通信基础设施，其包括来自组的至少两个设备，所述设备包括通过多个动态链路耦合到用户终端的小区塔，第一卫星星座和第二卫星星座，平流层平台。终端监视和改变多个和动态链路作为用户终端相对于所述至少两个设备的位置。

4. 发明授权

US07167704B2 Communication system using multiple link terminals for aircraft 有权
标题翻译：用于航空器的多个连接终端的通信系统
公开(公告)号：US07167704B2
公开(公告)日：2007-01-23
申请号：US11389269
申请日：2006-03-24
申请人： Donald C. D. Chang , Wah L. Lim , Ming U. Chang
发明人： Donald C. D. Chang , Wah L. Lim , Ming U. Chang
IPC分类号： H04Q7/20
CPC分类号： H04B7/18508 , H01Q1/007 , H01Q3/26 , H04B7/0408 , H04B7/18506 , H04W84/06
摘要： A communication system has a communication infrastructure and a gateway station communicating a communication signal to the communication infrastructure. An airplane having an antenna coupled to a processing circuit for establishing a plurality of multiple communication links corresponding to the communication infrastructure is used. The gateway station generates multiple datagrams from the television signal and transmits the multiple datagrams through the multiple dynamic links. The antenna receives the datagrams from the infrastructure and the processing circuit and reassembles the datagrams into the communication signal.
摘要翻译：通信系统具有通信基础设施和将通信信号传送到通信基础设施的网关站。使用具有耦合到处理电路的天线的飞机，用于建立对应于通信基础设施的多个多个通信链路。网关站从电视信号生成多个数据报，并通过多个动态链路传输多个数据报。天线从基础设施和处理电路接收数据报，并将数据报重新组合成通信信号。

5. 发明授权

US07027769B1 GEO stationary communications system with minimal delay 失效
标题翻译： GEO固定通信系统延迟最小
公开(公告)号：US07027769B1
公开(公告)日：2006-04-11
申请号：US09721854
申请日：2000-11-22
申请人： Harold A. Rosen , Donald C. D. Chang , Ming U. Chang , Weizheng Wang , John I. Novak, III , Wah L. Lim
发明人： Harold A. Rosen , Donald C. D. Chang , Ming U. Chang , Weizheng Wang , John I. Novak, III , Wah L. Lim
IPC分类号： H04B7/15
CPC分类号： H04B7/18504
摘要： A method for communicating and a communications system apparatus are disclosed. The apparatus comprises a communications platform and a gateway communicatively coupleable with a terrestrially-based network. The communications platform is disposed in a stratospheric location and transponds information between at least one of a plurality of user terminals and the gateway in essentially a bent pipe fashion. The method comprises the steps of receiving a first signal from the user terminal having an antenna in a stratospherically-based communication platform that maintains an apparent position relative to the user terminal within a beamwidth of a user terminal antenna and transponding the first signal from the stratospherically based communications platform to a gateway ground station.
摘要翻译：公开了一种通信方法和通信系统装置。该装置包括通信平台和可与基于地面的网络通信地耦合的网关。通信平台被布置在平流层位置，并且以基本上弯曲的管道方式在多个用户终端和网关中的至少一个之间传送信息。该方法包括以下步骤：在基于平流层的通信平台中接收来自具有天线的用户终端的第一信号，该通信平台在用户终端天线的波束宽度内保持相对于用户终端的明显位置，并从平流层传送第一信号基于通信平台的网关地面站。

6. 发明授权

US06963548B1 Coherent synchronization of code division multiple access signals 失效
标题翻译：码分多址信号的相干同步
公开(公告)号：US06963548B1
公开(公告)日：2005-11-08
申请号：US09550505
申请日：2000-04-17
申请人： Donald C. D. Chang , Kar W. Yung , David C. Cheng , Frank A. Hagen , Ming U. Chang , John I. Novak, III
发明人： Donald C. D. Chang , Kar W. Yung , David C. Cheng , Frank A. Hagen , Ming U. Chang , John I. Novak, III
IPC分类号： H04B1/7097 , H04B7/185 , H04B7/26 , H04B1/707
CPC分类号： H04B7/18534 , H04B1/7097 , H04B2201/709709
摘要： A novel method and apparatus is described for reducing the number of CDMA codes for a constellation of multiple trasponder platforms serving a number of subscribers in the same service area. A coherent processing technique synchronizes the phase of CDMA signals arriving at a subscriber from multiple trasponder platforms to increase the code capacity and thus the number of possible subscribers for most of the multiple transponder platform systems in current use.
摘要翻译：描述了一种新颖的方法和装置，用于减少为同一服务区域中的多个订户服务的多个应答器平台的星座的CDMA码的数量。相干处理技术使来自多个应答器平台的到达用户的CDMA信号的相位同步，以增加当前使用中的多个应答器平台系统中的大多数应答器平台系统的代码容量和可能的订户数量。

7. 发明授权

US06914557B2 Micro cell architecture for mobile user tracking communication system 有权
标题翻译：移动用户跟踪通信系统的微小区架构
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。

8. 发明授权

US06751458B1 Architecture utilizing frequency reuse in accommodating user-link and feeder-link transmissions 有权
标题翻译：利用频率重用在适应用户链路和馈线链路传输中的架构
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。

9. 发明授权

US06501941B1 Method for identifying growth limits of handheld services for mobile satellite communications 有权
标题翻译：识别移动卫星通信手持服务增长限制的方法
公开(公告)号：US06501941B1
公开(公告)日：2002-12-31
申请号：US09432440
申请日：1999-11-02
申请人： Donald C. D. Chang , Kar W. Yung , David C. Cheng , Urban A. Von Der Embse , John I. Novak, III , Frank A. Taormina , Ming U. Chang
发明人： Donald C. D. Chang , Kar W. Yung , David C. Cheng , Urban A. Von Der Embse , John I. Novak, III , Frank A. Taormina , Ming U. Chang
IPC分类号： H04B7185
CPC分类号： H04B7/18519 , B64G1/1007 , B64G1/242
摘要： Methods for increasing the efficiency of satellite constellation operations are disclosed. The steps of the present invention comprise calculating the maximum number of communications signals that each satellite in the satellite constellation can generate, determining an operational constraint on each satellite, the operational constraint limiting the number of communications signals that each satellite can radiate substantially simultaneously, determining an operational space for each satellite wherein the operational space is defined using the operational constraint and the calculated number of signals, and using the operational space for each satellite in the constellation to determine the operational point for the constellation.
摘要翻译：公开了提高卫星星座操作效率的方法。本发明的步骤包括计算卫星星座中每个卫星可以产生的通信信号的最大数量，确定每个卫星的操作约束，限制每个卫星可基本上同时辐射的通信信号的数量的操作约束，确定每个卫星的操作空间，其中使用操作约束和所计算的信号数定义操作空间，并且使用星座中的每个卫星的操作空间来确定星座的操作点。

10. 发明授权

US06337980B1 Multiple satellite mobile communications method and apparatus for hand-held terminals 有权
标题翻译：用于手持终端的多卫星移动通信方法和装置
公开(公告)号：US06337980B1
公开(公告)日：2002-01-08
申请号：US09271997
申请日：1999-03-18
申请人： Donald C. D. Chang , John I. Novak, III , Kar Yung , Frank A. Hagen , Ming U. Chang , William Mayfield
发明人： Donald C. D. Chang , John I. Novak, III , Kar Yung , Frank A. Hagen , Ming U. Chang , William Mayfield
IPC分类号： H04B7185
CPC分类号： H04B7/18504 , H04B7/18506 , H04B7/18532 , H04B7/18534 , H04B7/212
摘要： A novel mobile satellite communications technique for hand-held terminals includes a satellite system having a plurality of individual satellites all in communication with a ground telecommunications hub. A signal processed by the ground telecommunications hub is radiated through multiple paths to a plurality of the individual satellites in the satellite constellation simultaneously. The radiated signal is then re-radiated by the plurality of individual satellites to a mobile satellite terminal that receives the re-radiated signal from the plurality of individual satellites simultaneously such that the same frequency spectrum may be re-used by another mobile user.
摘要翻译：一种用于手持终端的新型移动卫星通信技术包括具有全部与地面电信枢纽通信的多个单独卫星的卫星系统。由地面电信枢纽处理的信号通过多个路径同时辐射到卫星星座中的多个单独的卫星。然后，辐射信号被多个单独的卫星重新辐射到移动卫星终端，该移动卫星终端同时接收来自多个单独卫星的重新发射的信号，使得相同的频谱可被另一个移动用户重新使用。

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