公开(公告)号：AT292339T

公开(公告)日：2005-04-15

申请号：AT01948677

申请日：2001-06-22

Applicant: MOTOROLA INC

Inventor： GROSS JONATHAN H ,  EMMONS THOMAS PETER JR ,  TESSLER MICHAEL A

IPC: H04B7/185

公开(公告)号：BR0112184A

公开(公告)日：2003-05-20

申请号：BR0112184

申请日：2001-06-22

Applicant: MOTOROLA INC

Inventor： EMMONS THOMAS PETER JR ,  GROSS JONATHAN H ,  AMEDURI SCOTT A ,  HAVERTY MICHAEL B

IPC: H04B1/708 ,  H04B7/185

Abstract: A CDMA cellular communications network (400, FIG. 4) includes one or more aircraft (410), which relay pilot channel and control channel signals between base transceiver stations (BTS's 406, 413) and subscriber units (401). Over the control channel, the BTS transmits a handoff candidate list to the subscriber units. The handoff candidate list identifies candidate BTS's to which the subscriber unit, theoretically, could hand off. In addition, the list indicates at which offsets the subscriber units should search for short codes transmitted by the candidate BTS's over the pilot channel. Based on the path length between the BTS, aircraft, and subscriber unit, the candidate BTS's actually generate their short codes at an offset that is equal to or earlier than the offset reported to the subscriber unit by some delta. In addition, the BTS's can impose a variable delay on the generated short code bits to compensate for variations in the path delay as the aircraft flies in its flight pattern.

公开(公告)号：BR0111836A

公开(公告)日：2003-03-25

申请号：BR0111836

申请日：2001-06-22

Applicant: MOTOROLA INC

Inventor： GROSS JONATHAN H ,  EMMONS THOMAS PETER JR ,  WHITE SCOTT C ,  HANSON DUKE E

IPC: H04B7/185

Abstract: The present invention corrects for Doppler shift in both forward and reverse links in a cellular communications system including an airborne repeater. A reverse link pilot reference signal in a band similar to a communications signal band is received at a reverse link processor, and the Doppler shift in the reverse feeder link is corrected based on the reverse link pilot reference signal. The Doppler shift in the forward feeder link is also corrected based on the reverse link pilot reference signal prior to the forward feeder link being affected by the Doppler shift. The present invention also compensates for signal strength variations due to changing flight pattern positions of the repeater. Pre-compensation for forward feeder link path losses due to movement of the airplane is performed to cause communications signals transmitted to and from the cellular communications system repeater to have identical strength before the signals are transmitted to the system user cell phones within the area of coverage.

公开(公告)号：AU7139001A

公开(公告)日：2002-01-08

申请号：AU7139001

申请日：2001-06-22

Applicant: MOTOROLA INC

Inventor： GROSS JONATHAN H ,  EMMONS THOMAS PETER JR ,  WHITE SCOTT C ,  HANSON DUKE E

IPC: H04B7/185 ,  H04B7/00

Abstract: The present invention corrects for Doppler shift in both forward and reverse links in a cellular communications system including an airborne repeater. A reverse link pilot reference signal in a band similar to a communications signal band is received at a reverse link processor, and the Doppler shift in the reverse feeder link is corrected based on the reverse link pilot reference signal. The Doppler shift in the forward feeder link is also corrected based on the reverse link pilot reference signal prior to the forward feeder link being affected by the Doppler shift. The present invention also compensates for signal strength variations due to changing flight pattern positions of the repeater. Pre-compensation for forward feeder link path losses due to movement of the airplane is performed to cause communications signals transmitted to and from the cellular communications system repeater to have identical strength before the signals are transmitted to the system user cell phones within the area of coverage.

公开(公告)号：CA2412918C

公开(公告)日：2010-11-02

申请号：CA2412918

申请日：2001-06-22

Applicant: MOTOROLA INC

Inventor： GROSS JONATHAN H ,  EMMONS THOMAS PETER JR ,  TESSLER MICHAEL A

IPC: H04B7/185

Abstract: A cellular communications network (200, FIG. 2) includes one or more aircraft (210), which provide communication channels to cellular communications units, and also communicate with one or more base transceiver stations (206) and a control center (214). The control center receives (502, 602) telemetry and flight parameter information from the aircraft, and calculates (510, 606) network parameters based on the information. The control center transmits (512, 608) messages to the cellular network, including the aircraft, based on the calculated network parameters, and the aircraft and cellular network controls (612) its operations according to information within these messages.

公开(公告)号：HK1050448A1

公开(公告)日：2003-06-20

申请号：HK03101855

申请日：2003-03-14

Applicant: MOTOROLA INC

Inventor： OXLEY DEREK ALAN ,  EMMONS THOMAS PETER JR ,  CIMET ISRAEL ARIEH

IPC: H01Q1/28 ,  H01Q3/26 ,  H01Q21/29 ,  H04B7/185 ,  H04Q ,  H01Q ,  H04B

公开(公告)号：HK1048570A1

公开(公告)日：2003-04-04

申请号：HK03100633

申请日：2003-01-24

Applicant: MOTOROLA INC

Inventor： GROSS JONATHAN ,  ERLICK JOHN RICHARD ,  EMMONS THOMAS PETER JR

IPC: H04B20060101 ,  H04B7/185 ,  H04B7/204

Abstract: In a satellite communications system (100), system capacity is improved using a satellite (110 and 120) that includes a main mission antenna (MMA) (310 FIG. 3), antenna subsystem (320), and controller (350). Antenna subsystem (320) comprises a beamformer and associated software to optimize the beam shape and cell position with respect to the satellite's location. In one example, beam optimization is performed using a location based on latitude. Satellite (110 and 120) determines its spatial position and determines its latitudinal location based on this position information. The satellite determines the number of cells, the cell sizes, and the beam steering angles required at this latitudinal location. In other cases, beam optimization is performed using a location based on latitude and longitude, system loading, and satellite health and status.

公开(公告)号：AU3884700A

公开(公告)日：2000-11-17

申请号：AU3884700

申请日：2000-03-15

Applicant: MOTOROLA INC

Inventor： EMMONS THOMAS PETER JR ,  HOGBERG SHAWN ,  DAVIEAU GERALD JOSEPH ,  STARTUP JIM ,  CHEN SUSAN

IPC: H04B7/185

Abstract: In a communications system, an earth-based subscriber unit (40, FIG. 1) receives at least one communications beam (50, 60, FIG. 1) transmitted from one or more moving satellite communications nodes (10, 20). The earthbased subscriber unit evaluates which communications beam should be selected based on the power received (FIG. 2, 210), Doppler frequency shift (270), link quality, (290), interference level (300), and satellite and network specific parameters (310). By considering these factors, the earth-based subscriber unit selects the communications beam (50, 60) that will provide the optimum service and reduce the likelihood that an inter-satellite hand over of the call will be required while the call is in progress.

公开(公告)号：AU3874700A

公开(公告)日：2000-10-09

申请号：AU3874700

申请日：2000-03-10

Applicant: MOTOROLA INC

Inventor： EMMONS THOMAS PETER JR ,  PETERS ROBERT ANTHONY ,  STARTUP JAMES W ,  MONSEN PETER

IPC: H04B7/185 ,  H04L1/00 ,  H04L1/02 ,  H04L25/20

公开(公告)号：WO0201750A3

公开(公告)日：2002-05-02

申请号：PCT/US0119991

申请日：2001-06-22

Applicant: MOTOROLA INC

Inventor： GROSS JONATHAN H ,  EMMONS THOMAS PETER JR ,  WHITE SCOTT C ,  HANSON DUKE E

IPC: H04B7/185

CPC classification number: H04B7/18504

Abstract: The present invention corrects for Doppler shift in both forward and reverse links in a cellular communications system (10) including an airborne repeater. A reverse link pilot reference signal in a band similar to a communications signal band is received at a reverse link processor, and the Doppler shift in the reverse feeder link is corrected based on the reverse link pilot reference signal. The Doppler shift in the forward feeder link is also corrected based on the reverse link pilot reference signal prior to the forward feeder link being affected by the Doppler shift. The present invention also compensates for signal strength variations due to changing flight pattern positions of the repeater. Pre-compensation for forward feeder link path losses due to movement of the airplane (35) is performed to cause communications signals transmitted to and from the cellular communications system repeater to have identical strength before the signals are transmitted to the system user cell phones (18) within the area of coverage.

Abstract translation: 本发明在包括机载中继器的蜂窝通信系统（10）中校正前向链路和反向链路中的多普勒频移。 在反向链路处理器处接收类似于通信信号频带的反向链路导频参考信号，并且基于反向链路导频参考信号校正反向馈送链路中的多普勒频移。 在正向馈线链路受到多普勒频移影响之前，也基于反向链路导频参考信号校正前向馈线链路中的多普勒频移。 本发明还补偿由于改变中继器的飞行模式位置而导致的信号强度变化。 由于飞机（35）的移动导致的前馈馈链路径损耗的预补偿被执行以使得传输到蜂窝通信系统中继器和从蜂窝通信系统中继器传输的通信信号在信号传输到系统用户手机（18）之前具有相同的强度 ）在覆盖范围内。