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1.发明专利
公开(公告)号：IN760CHN2014A
公开(公告)日：2015-04-03
申请号：IN760CHN2014
申请日：2014-01-30
Applicant: QUALCOMM INC
Inventor： JALALI AHMAD , SCHIFF LEONARD N , AMES WILLIAM G
IPC: H04B7/185
Abstract: An air to ground communication system provides internet access to aircraft from ground based stations. The air to ground system shares spectrum with uplink portions of a satellite communication spectrum. Interference mitigation techniques are employed to avoid interference between the ground based communications and satellite communications. Fade mitigation techniques are employed to provide communication to aircraft at low angles of elevation in the presence of rain.
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2.发明专利
公开(公告)号：ES2281202T3
公开(公告)日：2007-09-16
申请号：ES99963873
申请日：1999-11-09
Applicant: QUALCOMM INC
Inventor： ANTONIO FRANKLIN P , SCHIFF LEONARD N , AMES WILLIAM G
Abstract: Un procedimiento para el aislamiento de transmisiones de canales múltiples sobre señales de comunicaciones de múltiples fuentes (102, 104, 106) de señal, comprendiendo dicho procedimiento: dividir dichos canales en N grupos de canales; y transmitir primera información sobre uno primero de dichos N grupos de canales desde una primera fuente (102, 104, 106) de señal utilizando un primer modo de polarización mientras que se transmite simultáneamente de forma sustancial segunda información sobre un segundo de dichos N grupos de canales desde una segunda fuente (102, 104, 106) de señal utilizando un segundo modo de polarización que es sustancialmente ortogonal al primer modo de polarización, caracterizado por después: transmitir la primera información sobre el primero de dichos N grupos de canales desde dicha segunda fuente (102, 104, 106) de señal utilizando dicho segundo modo de polarización mientras que se transmite simultáneamente de forma sustancial la segunda información sobre el segundo de dichos N grupos de canales desde dicha primera fuente (102, 104, 106) de señal utilizando dicho primer modo de polarización.
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公开(公告)号：CA2337992C
公开(公告)日：2006-01-24
申请号：CA2337992
申请日：1999-07-21
Applicant: QUALCOMM INC
Inventor： MARSH GENE W , STEWART RICHARD A , GROB MATTHEW S , SCHIFF LEONARD N , BJEREDE MARIE M , ANTONIO FRANKLIN P , AMES WILLIAM G , CHOCKALINGAM ANANTHANARAYANAN , BUTLER BRIAN , DETERMAN JAMES T , GROVER DOUGLAS , KERNS ARTHUR S
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, the 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 beams to be used are the beams that will decrease the call dropping rates and provide a desired level of beam source diversity.
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公开(公告)号：BR9915144A
公开(公告)日：2002-01-02
申请号：BR9915144
申请日：1999-11-09
Applicant: QUALCOMM INC
Inventor： ANTONIO FRANKLIN P , SCHIFF LEONARD N , AMES WILLIAM G
Abstract: The information signals are transferred to end users, customers, or service subscribers using at least two signal sources, generally satellites, and polarized radiation. Two polarization modes are employed, with the preferred modes being left-hand and right-hand circularly polarized radiation, although other polarization modes may be employed. The total number of channels can be divided among the polarization modes and transferred to end users either through the use of polarization switching in the receivers to selectively switch between the satellites, or by switching elements in the satellites (sources) to switch between polarization modes used for transmission.
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公开(公告)号：AU2022400A
公开(公告)日：2000-05-29
申请号：AU2022400
申请日：1999-11-09
Applicant: QUALCOMM INC
Inventor： ANTONIO FRANKLIN P , SCHIFF LEONARD N , AMES WILLIAM G
Abstract: The information signals are transferred to end users, customers, or service subscribers using at least two signal sources, generally satellites, and polarized radiation. Two polarization modes are employed, with the preferred modes being left-hand and right-hand circularly polarized radiation, although other polarization modes may be employed. The total number of channels can be divided among the polarization modes and transferred to end users either through the use of polarization switching in the receivers to selectively switch between the satellites, or by switching elements in the satellites (sources) to switch between polarization modes used for transmission.
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Patent Agency Ranking
公开(公告)号：DK0504281T3
公开(公告)日：1999-06-14
申请号：DK91901367
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 , G01S1/02 , G01S5/00 , 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.
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公开(公告)号：CA2073053A1
公开(公告)日：1991-06-06
申请号：CA2073053
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.
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公开(公告)号：DE69940514D1
公开(公告)日：2009-04-16
申请号：DE69940514
申请日：1999-07-21
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
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.
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公开(公告)号：AU763381B2
公开(公告)日：2003-07-24
申请号：AU5219799
申请日：1999-07-21
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
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.
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公开(公告)号：AU760132B2
公开(公告)日：2003-05-08
申请号：AU2022400
申请日：1999-11-09
Applicant: QUALCOMM INC
Inventor： ANTONIO FRANKLIN P , SCHIFF LEONARD N , AMES WILLIAM G
Abstract: The information signals are transferred to end users, customers, or service subscribers using at least two signal sources, generally satellites, and polarized radiation. Two polarization modes are employed, with the preferred modes being left-hand and right-hand circularly polarized radiation, although other polarization modes may be employed. The total number of channels can be divided among the polarization modes and transferred to end users either through the use of polarization switching in the receivers to selectively switch between the satellites, or by switching elements in the satellites (sources) to switch between polarization modes used for transmission.
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