公开(公告)号：HK1037811A1

公开(公告)日：2002-02-15

申请号：HK01108352

申请日：2001-11-28

Applicant: QUALCOMM INC

Inventor： ANTONIO FRANKLIN P ,  MARSH GENE W ,  STEWART RICHARD A ,  BJEREDE MARIE M ,  CHOCKALINGAM ANANTHANARAYANAN ,  KERNS ARTHUR S ,  BUTLER BRIAN ,  GROB MATTHEW S ,  DETERMAN JAMES T ,  GROVER DOUGLAS ,  SCHIFF LEONARD N ,  AMES WILLIAM G

IPC: H04B20060101 ,  H04B7/26 ,  H04B7/02 ,  H04B7/185 ,  H04Q7/36

Abstract: A method for reducing call dropping rates in a multi-beam communication system. The multi-beam communication system includes a user terminal, a gateway, and a plurality of beam sources, where each beam source projects a plurality of beams, and where a communication link between the user terminal and the gateway is established on one or more beams. The method according to the present invention relies on a messaging protocol between the gateway and the user terminal. Based on messages sent from the user terminal to the gateway, preferably on a preselected periodic basis, the gateway can determine the more desirable beam(s) for transmitting data or information to the user terminal. The messages sent from the user terminal to the gateway contain values representing beam strengths as measured at the user terminal. The gateway uses the user terminal measured beam strengths to select the beams that should be used for transmitting data or information to the user terminal. The beams that should be used are the beams that if used will decrease the call dropping rates and provide a desired level of beam source diversity.

公开(公告)号：AT171278T

公开(公告)日：1998-10-15

申请号：AT91901367

申请日：1990-11-30

Applicant: QUALCOMM INC

Inventor： AMES WILLIAM G ,  JACOBS IRWIN M ,  WEAVER LINDSAY A JR ,  GILHOUSEN KLEIN S

IPC: G01S5/12 ,  G01S5/14 ,  G01S13/87 ,  G01S19/00 ,  G01S19/01 ,  G01S19/38 ,  G01S19/48 ,  H04B7/185 ,  G01S5/00 ,  G01S1/02

Abstract: A method and system for determining the position of an object using a fixed station and a plurality of earth orbit satellites whose positions are known. Separate periodic signals are transmitted from the fixed station via first and second satellites to the object whose postion is to be determined. The phase offset in periodic characteristics of the periodic signals as received from the first and second satellites is measured at the object. The phase offset corresponds to a relative time difference in propagation of the signals traveling two different paths to the object. The object transmits via the first satellite a return signal indicative of the measured relative time difference. This return signal is activated some time in the future according to the object local time, which is slaved to receipt of the periodic signal sent through the first satellite. This future time is the start of the particular time period as decided by the fixed station's schedule. At the fixed station, an instantaneous round trip delay, determined by the time offset of the current transmission clock time relative to the receive clock time of reception of the return signal, along with the measured relative time difference sent back on the return signal, is used to calculate the distances between the first and second satellites to the object. From these distances the position of the object is calculated.

公开(公告)号：NO300248B1

公开(公告)日：1997-04-28

申请号：NO922212

申请日：1992-06-04

Applicant: QUALCOMM INC

Inventor： AMES WILLIAM G ,  JACOBS IRWIN M ,  WEAVER LINDSAY A JR ,  GILHOUSEN KLEIN S

IPC: G01S5/12 ,  G01S5/14 ,  G01S13/87 ,  G01S19/00 ,  G01S19/01 ,  G01S19/38 ,  G01S19/48 ,  H04B7/185 ,  G01S5/10

Abstract: A method and system for determining the position of an object using a fixed station and a plurality of earth orbit satellites whose positions are known. Separate periodic signals are transmitted from the fixed station via first and second satellites to the object whose postion is to be determined. The phase offset in periodic characteristics of the periodic signals as received from the first and second satellites is measured at the object. The phase offset corresponds to a relative time difference in propagation of the signals traveling two different paths to the object. The object transmits via the first satellite a return signal indicative of the measured relative time difference. This return signal is activated some time in the future according to the object local time, which is slaved to receipt of the periodic signal sent through the first satellite. This future time is the start of the particular time period as decided by the fixed station's schedule. At the fixed station, an instantaneous round trip delay, determined by the time offset of the current transmission clock time relative to the receive clock time of reception of the return signal, along with the measured relative time difference sent back on the return signal, is used to calculate the distances between the first and second satellites to the object. From these distances the position of the object is calculated.

公开(公告)号：BRPI0414675A

公开(公告)日：2006-11-28

申请号：BRPI0414675

申请日：2004-09-21

Applicant: QUALCOMM INC

Inventor： AMES WILLIAM G ,  SCHIFF LEONARD N

IPC: H04B7/185 ,  H04Q7/20

Abstract: An apparatus and method for a wireless communication system in which a forward/uplink portion and a return/uplink portion are assigned within an available frequency bandwidth is disclosed. More particularly, a service area is divided into multiple regions. The assignment of the forward/uplink portion of the return/uplink portion is shuffled in the multiple regions. The apparatus and method may be implemented in a multi-beam wireless communication system.

公开(公告)号：MXPA06003334A

公开(公告)日：2006-06-08

申请号：MXPA06003334

申请日：2004-09-21

Applicant: QUALCOMM INC

Inventor： AMES WILLIAM G

IPC: H04B7/185 ,  H04Q7/20

Abstract: Se describen un aparato y metodo para un sistema de comunicaciones inalambricas en el cual se asignan una porcion de avance/enlace ascendente y una porcion de retorno/enlace ascendente dentro de un ancho de banda de frecuencia disponible. Mas particularmente, un area de servicio se divide en multiples regiones. La asignacion de la porcion de avance/enlace ascendente de la porcion de retorno/enlace ascendente se distribuye en multiples regiones. El aparato y metodo pueden implementarse en un sistema de comunicaciones inalambricas de haz multiple.

公开(公告)号：CA2539901A1

公开(公告)日：2005-03-31

申请号：CA2539901

申请日：2004-09-21

Applicant: QUALCOMM INC

Inventor： SCHIFF LEONARD N ,  AMES WILLIAM G

IPC: H04B7/185 ,  H04Q7/20

Abstract: An apparatus and method for a wireless communication system in which a forward/uplink portion and a return/uplink portion are assigned within an available frequency bandwidth is disclosed. More particularly, a service area is divided into multiple regions. The assignment of the forward/uplink portion of the return/uplink portion is shuffled in the multiple regions. The apparatus and method may be implemented in a multi-beam wireless communication system.

公开(公告)号：CA2337992A1

公开(公告)日：2000-02-03

申请号：CA2337992

申请日：1999-07-21

Applicant: QUALCOMM INC

Inventor： BUTLER BRIAN ,  KERNS ARTHUR S ,  CHOCKALINGAM ANANTHANARAYANAN ,  MARSH GENE W ,  GROVER DOUGLAS ,  GROB MATTHEW S ,  DETERMAN JAMES T ,  STEWART RICHARD A ,  ANTONIO FRANKLIN P ,  BJEREDE MARIE M ,  SCHIFF LEONARD N ,  AMES WILLIAM G

IPC: H04B7/26 ,  H04B7/02 ,  H04B7/185 ,  H04Q7/36

Abstract: Method for reducing call dropping rates in a multi-beam communication system that includes a user terminal, a gateway, and a plurality of beam sources projecting a plurality of beams, and where a link between the user terminal and the gateway is established on one or more beams. The method relies on a messaging protocol between the gateway and the user. Based on messages sent from the user to the gateway, preferably on a preselected periodic basis, th e gateway determines the more desirable beam(s) for transmitting to the user. The messages sent from the user to the gateway contain values representing beam strengths as measured at the user. The gateway uses the user measured beam strengths to select the beams that should be used for the user. The bea ms to be used are the beams that will decrease the call dropping rates and provide a desired level of beam source diversity.

公开(公告)号：AU647337B2

公开(公告)日：1994-03-17

申请号：AU7037191

申请日：1990-11-30

Applicant: QUALCOMM INC

Inventor： AMES WILLIAM G ,  JACOBS IRWIN M ,  WEAVER LINDSAY A JR ,  GILHOUSEN KLEIN S

IPC: G01S5/12 ,  G01S5/14 ,  G01S13/87 ,  G01S19/00 ,  G01S19/01 ,  G01S19/38 ,  G01S19/48 ,  H04B7/185 ,  G01S5/10

Abstract: A method and system for determining the position of an object using a fixed station and a plurality of earth orbit satellites whose positions are known. Separate periodic signals are transmitted from the fixed station via first and second satellites to the object whose postion is to be determined. The phase offset in periodic characteristics of the periodic signals as received from the first and second satellites is measured at the object. The phase offset corresponds to a relative time difference in propagation of the signals traveling two different paths to the object. The object transmits via the first satellite a return signal indicative of the measured relative time difference. This return signal is activated some time in the future according to the object local time, which is slaved to receipt of the periodic signal sent through the first satellite. This future time is the start of the particular time period as decided by the fixed station's schedule. At the fixed station, an instantaneous round trip delay, determined by the time offset of the current transmission clock time relative to the receive clock time of reception of the return signal, along with the measured relative time difference sent back on the return signal, is used to calculate the distances between the first and second satellites to the object. From these distances the position of the object is calculated.

公开(公告)号：BR9007896A

公开(公告)日：1992-08-25

申请号：BR9007896

申请日：1990-11-30

Applicant: QUALCOMM INC

Inventor： AMES WILLIAM G ,  JACOBS IRWIN M ,  WEAVER LINDSAY A JR ,  GILHOUSEN KLEIN S

IPC: G01S5/12 ,  G01S5/14 ,  G01S13/87 ,  G01S19/00 ,  G01S19/01 ,  G01S19/38 ,  G01S19/48 ,  H04B7/185 ,  G01S5/10

Abstract: A method and system for determining the position of an object using a fixed station and a plurality of earth orbit satellites whose positions are known. Separate periodic signals are transmitted from the fixed station via first and second satellites to the object whose postion is to be determined. The phase offset in periodic characteristics of the periodic signals as received from the first and second satellites is measured at the object. The phase offset corresponds to a relative time difference in propagation of the signals traveling two different paths to the object. The object transmits via the first satellite a return signal indicative of the measured relative time difference. This return signal is activated some time in the future according to the object local time, which is slaved to receipt of the periodic signal sent through the first satellite. This future time is the start of the particular time period as decided by the fixed station's schedule. At the fixed station, an instantaneous round trip delay, determined by the time offset of the current transmission clock time relative to the receive clock time of reception of the return signal, along with the measured relative time difference sent back on the return signal, is used to calculate the distances between the first and second satellites to the object. From these distances the position of the object is calculated.

公开(公告)号：FI922629A0

公开(公告)日：1992-06-05

申请号：FI922629

申请日：1992-06-05

Applicant: QUALCOMM INC

Inventor： AMES WILLIAM G ,  JACOBS IRWIN M ,  WEAVER JR LINDSAY A ,  GILHOUSEN KLEIN S

IPC: G01S5/12 ,  G01S5/14 ,  G01S13/87 ,  G01S19/00 ,  G01S19/01 ,  G01S19/38 ,  G01S19/48 ,  H04B7/185 ,  G01S

Abstract: A method and system for determining the position of an object using a fixed station and a plurality of earth orbit satellites whose positions are known. Separate periodic signals are transmitted from the fixed station via first and second satellites to the object whose postion is to be determined. The phase offset in periodic characteristics of the periodic signals as received from the first and second satellites is measured at the object. The phase offset corresponds to a relative time difference in propagation of the signals traveling two different paths to the object. The object transmits via the first satellite a return signal indicative of the measured relative time difference. This return signal is activated some time in the future according to the object local time, which is slaved to receipt of the periodic signal sent through the first satellite. This future time is the start of the particular time period as decided by the fixed station's schedule. At the fixed station, an instantaneous round trip delay, determined by the time offset of the current transmission clock time relative to the receive clock time of reception of the return signal, along with the measured relative time difference sent back on the return signal, is used to calculate the distances between the first and second satellites to the object. From these distances the position of the object is calculated.