公开(公告)号：WO02058186A3

公开(公告)日：2003-10-16

申请号：PCT/US0200842

申请日：2002-01-11

Applicant: HUGHES ELECTRONICS CORP

Inventor： CHANG DONALD C D ,  LIM WAH L ,  CHANG MING U

IPC: H01Q1/24 ,  H01Q3/26 ,  H01Q25/00 ,  H04B7/04 ,  H04W16/26 ,  H04W16/28 ,  H04W88/08 ,  H04Q7/36 ,  H04Q7/30

CPC classification number: H04W84/042 ,  H01Q1/246 ,  H01Q3/2605 ,  H01Q25/00 ,  H04B7/0408 ,  H04W16/26 ,  H04W16/28 ,  H04W88/085

Abstract: A communication system (10) has a base station having an adaptive antenna 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 base station. The gateway station forms a plurality of beams commands by communicating plurality of a control signals to the base station to form the communication beams.

Abstract translation: 通信系统（10）具有具有多个主阵列天线元件的自适应天线的基站，用于产生多个通信波束。 该系统还包括耦合到基站的网关站。 网关站通过将多个控制信号传送到基站来形成多个波束命令以形成通信波束。

公开(公告)号：WO0193458A3

公开(公告)日：2002-06-06

申请号：PCT/US0115388

申请日：2001-05-11

Applicant: HUGHES ELECTRONICS CORP

Inventor： CHANG MING U ,  YUNG KAR W ,  HAGEN FRANK A ,  CHANG DONALD C D

IPC: H04B7/185 ,  H04B7/06

CPC classification number: H04B7/18532 ,  H04B7/18504

Abstract: A mobile wireless communications system (100) including a plurality of individual transponding platforms (16, 104, 106, 108) all in communication with a central processing hub (102). A signal processed by the central processing hub (102) is radiated simultaneously through multiple paths to a plurality of the individual transponding platforms (16, 104, 106, 108). The signal transmitted to each transponding platform (16, 104, 106, 108) by the hub (102) is appropriately delayed by the hub (102) so as to equalize the differential delay of all such signals from a given receiver location. The radiated signal is then re-radiated by each of the plurality of individual transponding platforms (16, 104, 106, 108) to a mobile satellite terminal (112) that receives the re-radiated signal from the plurality of individual transponding platforms (16, 104, 106, 108). The signals from the plurality of transponding platforms (16, 104, 106, 108) are all received coherently by the intended user (112), and incoherently by all other users.

Abstract translation: 移动无线通信系统（100）包括与中央处理集线器（102）通信的多个单独的转发平台（16,104,106,108）。 由中央处理集线器（102）处理的信号同时通过多个路径被辐射到多个单独的转发平台（16,104,106,108）。 由集线器（102）发送到每个转发平台（16,104,106,108）的信号被集线器（102）适当地延迟，以便均衡来自给定接收机位置的所有这些信号的差分延迟。 然后，辐射信号被多个单独的转发平台（16,104,106,108）中的每一个重新辐射到移动卫星终端（112），移动卫星终端接收来自多个单独的转发平台（16）的重新发射的信号 ，104,106,108）。 来自多个转发平台（16,104,106,108）的信号都被预期用户（112）相干接收，并且被所有其他用户不连贯地接收。

公开(公告)号：WO02058273A2

公开(公告)日：2002-07-25

申请号：PCT/US0200598

申请日：2002-01-11

Applicant: HUGHES ELECTRONICS CORP

Inventor： CHANG DONALD C D ,  LIM WAH L ,  CHANG MING U

IPC: H01Q1/24 ,  H01Q3/26 ,  H01Q25/00 ,  H04B7/04 ,  H04B7/185 ,  H04B7/204 ,  H04W16/26 ,  H04W16/28 ,  H04W88/08 ,  H04B7/00

CPC classification number: H04W16/28 ,  H01Q1/246 ,  H01Q3/2605 ,  H01Q25/00 ,  H04B7/0408 ,  H04B7/18504 ,  H04B7/2041 ,  H04W16/26 ,  H04W88/085

Abstract: A communication system (10) has a high altitude device (19) having an adaptive antenna (31) with a plurality of main array antenna elements for generating a plurality of communication beams. The system (10) further includes a gateway station (20) coupled to the high altitute device. The gateway station (20) forms a plurality of beams commands by communicating plurality of a control signals to the high altitude device station to form the communication beams.

Abstract translation: 通信系统（10）具有具有多个主阵列天线元件的自适应天线（31）的高空设备（19），用于产生多个通信波束。 系统（10）还包括耦合到高级设备的网关站（20）。 网关站（20）通过将多个控制信号传送到高空设备站来形成多个波束命令以形成通信波束。

公开(公告)号：WO0195520A3

公开(公告)日：2002-06-13

申请号：PCT/US0117923

申请日：2001-06-01

Applicant: HUGHES ELECTRONICS CORP

Inventor： CHANG DONALD C D ,  FERIA YING ,  WANG WEIZHENG ,  CHA ALAN ,  CHANG MING ,  HAGEN FRANK A ,  YUNG KAR W

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

CPC classification number: H04B7/18504 ,  H04B7/0617 ,  H04B7/086

Abstract: 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.

Abstract translation: 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，该通信系统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：WO0197388A3

公开(公告)日：2002-05-30

申请号：PCT/US0118588

申请日：2001-06-07

Applicant: HUGHES ELECTRONICS CORP

Inventor： CHANG DONALD C D ,  WANG WEIZHENG ,  FERIA YING ,  CHANG MING U ,  ROSEN HAROLD A ,  LIM WAH L

IPC: H04B7/185 ,  H04B7/204

CPC classification number: H04B7/18508

Abstract: A communications system (10) and method of operating the communications system includes a high altitude communication device (12) that communicates with a plurality of user terminals and a gateway station (30). The gateway station (30) couples the users to terrestrial networks (32) and other users. The high altitude communication device (16) has a controller that generates a second beam having the first frequency to a service (26). The stratospheric platform (12) does not generate the second beam within a blocking area. User terminals within the service area outside the blocking area are configured to receive the first beam and the second beam.

Abstract translation: 通信系统（10）和操作通信系统的方法包括与多个用户终端和网关站（30）通信的高空通信设备（12）。 网关站（30）将用户耦合到地面网络（32）和其他用户。 高空通信设备（16）具有控制器，该控制器产生具有第一频率的服务（26）的第二波束。 平流层平台（12）不会在阻挡区域内产生第二束。 阻挡区域外的服务区域内的用户终端被配置为接收第一光束和第二光束。

公开(公告)号：WO02058272A3

公开(公告)日：2003-02-13

申请号：PCT/US0200597

申请日：2002-01-11

Applicant: HUGHES ELECTRONICS CORP

Inventor： CHANG DONALD C D ,  LIM WAH L ,  CHANG MING U

IPC: H01Q1/24 ,  H01Q3/26 ,  H01Q25/00 ,  H04B7/04 ,  H04W16/26 ,  H04W16/28 ,  H04W84/14 ,  H04W88/08 ,  H04Q7/36 ,  H04Q7/30

CPC classification number: H04W16/28 ,  H01Q1/246 ,  H01Q3/2605 ,  H01Q25/00 ,  H04B7/0408 ,  H04W16/26 ,  H04W84/14 ,  H04W88/085

Abstract: A communication system (10) has a first plurality of wireless basestations (18) having adaptive antennas with a plurality of main array antenna elements (56) for generating a plurality of communication beams. The system (10) further includes a gateway station (20) coupled to the first plurality of wireless basestations. Tha gateway station (20) forms a plurality of beams commands by communicating plurality of a control signals to the first plurality of wireless base stations (18) 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.

Abstract translation: 通信系统（10）具有第一多个无线基站（18），其具有多个主阵列天线元件（56）的自适应天线，用于产生多个通信波束。 系统（10）还包括耦合到第一多个无线基站的网关站（20）。 网关站（20）通过将多个控制信号传送给具有第二多个主阵列天线元件的第一多个自适应天线的第一多个无线基站（18）形成多个波束命令，用于产生多个 的通信波束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 所述基站使用来自第一基站的至少一个链路和通过所述基站中的第二基站的第二链路来形成所述通信波束。

公开(公告)号：WO0197406A3

公开(公告)日：2002-05-30

申请号：PCT/US0118587

申请日：2001-06-07

Applicant: HUGHES ELECTRONICS CORP

Inventor： CHANG DONALD C D ,  WANG WEIZHENG ,  LIM WAH L ,  FERIA YING ,  CHANG MING U

IPC: H04B7/185 ,  H04B7/19

CPC classification number: H04B7/18504 ,  H04B7/19

Abstract: 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.

Abstract translation: 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。

公开(公告)号：WO0194969A3

公开(公告)日：2002-03-28

申请号：PCT/US0116988

申请日：2001-05-23

Applicant: HUGHES ELECTRONICS CORP

Inventor： YUNG KAR W ,  HAGEN FRANK A ,  CHANG DONALD C D

IPC: H01Q3/26 ,  G01S5/02 ,  G01S13/87 ,  H04B7/185 ,  H04B7/26

CPC classification number: H04B7/18534 ,  G01S5/02 ,  G01S13/878 ,  H04B7/18547

Abstract: A mobile wireless communications system including a plurality of individual transponding nodes 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 pluralitz 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 associated with a remote user that receives the re-radiated signal from the plurality of the plurality of individual transponding platforms coherently and in phase. The number of transponders and codes used to transmit each user signal can be readily adapted to user requirements. The central hub can determine the position of each of the remote users based on stored information derived from the synchronization of the various signals, and specifically relating to the timing, phase or frequency of the signals in both the forward and return link.

Abstract translation: 一种移动无线通信系统，包括与中央处理集线器通信的多个单独的转发节点。 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，信号被多个多个单个转发平台中的每一个重新辐射到与远程用户相关联的移动终端，该远程用户从多个多个单独的转发平台中相干地并且相位地接收重新发射的信号。 用于发送每个用户信号的转发器和代码的数量可以容易地适应用户需求。 中央集线器可以基于从各种信号的同步导出的存储的信息来确定每个远程用户的位置，并且具体涉及在前向链路和返回链路中的信号的定时，相位或频率。

公开(公告)号：WO0191310A3

公开(公告)日：2002-03-28

申请号：PCT/US0115393

申请日：2001-05-11

Applicant: HUGHES ELECTRONICS CORP

Inventor： HAGEN FRANK A ,  FLAMMANG RICHARD ,  YUNG KAR W ,  CHANG DONALD C D

IPC: B64G1/10 ,  B64G1/24 ,  H04B7/185

CPC classification number: H04B7/18534 ,  B64G1/1007 ,  B64G1/1085 ,  B64G1/242

Abstract: A wireless communication system (10) includes a satellite constellation consisting of a plurality of satellites (106, 108). Each of the plurality of satellites (106, 108) is in an orbit whose eccentricity and inclination are perturbed relative to the same geosynchronous orbit. Each of the satellites (106, 108) in the constellation is capable of relaying signals in either direction between a central ground hub (12) and a plurality of mobile user terminals (18). The plurality of satellites (106, 108) are configured such that the period of their geosynchronous orbit remains substantially constant at one sidereal day.

Abstract translation: 无线通信系统（10）包括由多个卫星（106,108）组成的卫星星座。 多个卫星（106,108）中的每一个都是相对于相同的地球同步轨道扰动偏心和倾斜的轨道。 星座中的每个卫星（106,108）能够在中央地面集线器（12）和多个移动用户终端（18）之间的任一方向上中继信号。 多个卫星（106,108）被配置为使得它们的地球同步轨道的周期在一个星期天保持基本恒定。

公开(公告)号：WO0195523A2

公开(公告)日：2001-12-13

申请号：PCT/US0117892

申请日：2001-06-01

Applicant: HUGHES ELECTRONICS CORP

Inventor： CHANG DONALD C D ,  CHANG MING U ,  FERIA YING ,  WANG WEIZHENG ,  CHA ALAN ,  YUNG KAR ,  HAGEN FRANK A

IPC: H04B7/185 ,  H04B7/204

CPC classification number: H04B7/18504 ,  H04B7/2041

Abstract: A communication system including a first transceiver located on a first platform at a predetermined altitude. A first antenna is located on the first platform and connected to the first transceiver. A second antenna is connected to the other end of the first transceiver. A second transceiver is located on a ground hub physically and independent of the first platform. A third antenna is located on the ground hub and connected to the second transceiver. The third antenna is adapted to communicate with the second antenna. The first platform is maintained in a stratospheric orbit. A beamforming system is connected to the second transceiver and mounted on the ground hub. The beamforming system provides a beamformed signal from the second transceiver to the first transceiver effective to drive the first array antenna to radiate multiple beams to a surface, whereby the multiple beams create time varying and dissimilar footprints thereon. A second antenna is mounted on the first platform to receive the beamformed signal from the ground hub. The beamforming system is adapted to drive the first antenna to generate plural beams on the earth's surface, each beam providing a respective footprint or cell. Each beam tracks a respective user located at a center of each cell. The system allows for narrow beams to be created which, in turn, enables frequency reuse. A code is assigned to each beam and a mechanism is provided for preventing a user from receiving more than one beam with a given code. This mechanism is adapted to anticipate a condition by which a user will move to a location at which the user would receive more than one beam with a given code. The mechanism will quickly assign a second code to at least one beam prior to the arrival of the user at that position.

Abstract translation: 一种通信系统，包括位于第一平台上的预定高度的第一收发器。 第一天线位于第一平台上并连接到第一收发器。 第二天线连接到第一收发器的另一端。 第二收发器位于物理上和独立于第一平台的地面集线器上。 第三个天线位于地面集线器上并连接到第二个收发器。 第三天线适于与第二天线通信。 第一个平台保持在平流层轨道上。 波束成形系统连接到第二收发器并且安装在地面集线器上。 波束形成系统提供来自第二收发器的波束形成的信号到第一收发器，其有效地驱动第一阵列天线以将多个波束辐射到表面，由此多个波束在其上产生时变和不同的足迹。 第二天线安装在第一平台上以从地面集线器接收波束形成的信号。 波束形成系统适于驱动第一天线以在地球表面上产生多个波束，每个波束提供相应的覆盖区或小区。 每个光束跟踪位于每个单元的中心的相应用户。 该系统允许创建窄波束，这反过来又使能频率重用。 代码被分配给每个波束，并且提供了用于防止用户使用给定代码接收多于一个波束的机制。 该机制适于预测用户将移动到用户将使用给定代码接收多于一个的一个位置的状况。 该机制将在用户到达该位置之前在至少一个波束上快速分配第二代码。