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公开(公告)号：AT537612T
公开(公告)日：2011-12-15
申请号：AT02717318
申请日：2002-01-11
Applicant: QUALCOMM INC
Inventor： RICK ROLAND , SUBRAHMANYA PARVATHANATHAN , BUTLER BRIAN , PATEL SHIMMAN , EKVETCHAVIT THUNACHATE
Abstract: In an antenna diversity environment, the timing offset of the receiver's fingers are based on the timing offset of the received peaks of the base station transmit signals. In a system with non-negligible multipath spacing, the timing offset of the received peaks of the base station transmit signals are not necessarily at the same location. In one embodiment, the demodulating elements for the signal from each base station antenna use the same offset for demodulating and determining an error signal based on pilot signal sampling prior to the timing offset and subsequent to the timing offset. The error signals are averaged and used by a time tracking loop to track the incoming signal. In another embodiment, the demodulating elements for the signal from each base station antenna independently time track the signals with different timing offsets for each finger. The preferred embodiment depends on the method used by the base station to multiplex the data onto multiple transmit antennas.
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公开(公告)号：AT484123T
公开(公告)日：2010-10-15
申请号：AT03705685
申请日：2003-01-07
Applicant: QUALCOMM INC
Inventor： BAKER KENNETH , BUTLER BRIAN , WHEATLEY CHARLES
Abstract: An apparatus and method for identifying remote communications transmitted via a repeater from remote communications not transmitted via the repeater. The method comprises the steps of receiving a plurality of signal transmissions originating from a plurality of remote stations, wherein each of the signal transmissions is associated with a call originating from one of the plurality of remote stations; processing the plurality of received signal transmissions to identify received transmissions that include a discriminant applied by a repeater; and designating each of the plurality of received signal transmissions as being transmitted via the repeater if the received signal transmission includes the discriminant.
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公开(公告)号：CA2306375C
公开(公告)日：2008-12-09
申请号：CA2306375
申请日：1998-10-14
Applicant: QUALCOMM INC
Inventor： SCHIFF LEONARD , BUTLER BRIAN , SILBERGER AMNON
Abstract: A method and appararatus for accurately determining the operating characteristics or im-pact of nonlinear effects on de-vices or communication systems transferring orthogonally coded spread-spectrum communication signals. A Walsh Power Ratio, is used to more accurately deter-mine system response. This in-formation can be used by power control loops in controlling or adjusting the operation of non--linear elements or stages such as high power amplifiers in orthog-onal CDMA communication sys-tems to provide improved system response. The information can also be employed in assigning channels to systems users, and to proceed with physical changes to system hardware. The mea-surements used to formulate the WPR can be made to individual components or to entire systems by injecting communication sig-nals in multiple channels containing data, and leaving at least one empt y channel. The received power per channel on the output side of the system or device is then measured. A ratio of power density for the empt y to the active channels is then formed. The determination of WPR for a system or components can be realized during periods of operatio n through periodic transfer of test signals either at allocated times or by interleaving among existing traffic signals in the system.
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公开(公告)号：AT394891T
公开(公告)日：2008-05-15
申请号：AT04778166
申请日：2004-07-12
Applicant: QUALCOMM INC
Inventor： CHEN TAO , ACHOUR BAAZIZ , BUTLER BRIAN , TIEDEMANN EDWARD , ZHANG HAITAO , SAINTS KEITH , BLESSENT LUCA , WEI YONGBIN
Abstract: A dynamic shared forward link channel (or “data” channel) is used to send multicast data to a group of wireless devices, e.g., using a common long code mask for the data channel. Reference power control (PC) bits are also sent on the data channel and used for signal quality estimation. A shared forward link control channel is used to send user-specific signaling to individual wireless devices, e.g., using time division multiplexing (TDM) and a unique long code mask for each wireless device. A shared forward link indicator channel is used to send reverse link (RL) PC bits to the wireless devices, e.g., using TDM. The data channel is jointly power controlled by all wireless devices receiving the data channel. The control and indicator channels are individually power controlled by each wireless device such that the signaling and RL PC bits sent on these channels for the wireless device are reliably received.
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公开(公告)号：AU2002248333A1
公开(公告)日：2002-08-12
申请号：AU2002248333
申请日：2002-01-11
Applicant: QUALCOMM INC
Inventor： RICK ROLAND , SUBRAHMANYA PARVATHANATHAN , BUTLER BRIAN , PATEL SHIMMAN , EKVETCHAVAT THUNACHATE
Abstract: In an antenna diversity environment, the timing offset of the receiver's fingers are based on the timing offset of the received peaks of the base station transmit signals. In a system with non-negligible multipath spacing, the timing offset of the received peaks of the base station transmit signals are not necessarily at the same location. In one embodiment, the demodulating elements for the signal from each base station antenna use the same offset for demodulating and determining an error signal based on pilot signal sampling prior to the timing offset and subsequent to the timing offset. The error signals are averaged and used by a time tracking loop to track the incoming signal. In another embodiment, the demodulating elements for the signal from each base station antenna independently time track the signals with different timing offsets for each finger. The preferred embodiment depends on the method used by the base station to multiplex the data onto multiple transmit antennas.
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Patent Agency Ranking
公开(公告)号：NO20001819L
公开(公告)日：2000-06-08
申请号：NO20001819
申请日：2000-04-07
Applicant: QUALCOMM INC
Inventor： HARMS BRIAN , BUTLER BRIAN , SKINNER GORDON
IPC: H04J13/12 , H04B1/707 , H04B1/7075 , H04B1/7077 , H04B7/216 , H04J13/00
Abstract: A technique for spreading information signals in a spread spectrum communication system to provide increased signal acquisition speed. A first PN spreading code or code set is used to spread information signals along with a second PN spreading code sequence or function. The second PN code is synchronized with the first PN spreading code, but has a larger code period so that each code chip of the second PN code extends over the entire period of the first PN code. The longer period spreading code forms an outer code which helps provide unambiguous beam identification and easily acquired frame timing in the presence of dynamically changing signal path delay, improving signal acquisition.
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公开(公告)号：NO20001819D0
公开(公告)日：2000-04-07
申请号：NO20001819
申请日：2000-04-07
Applicant: QUALCOMM INC
Inventor： HARMS BRIAN , BUTLER BRIAN , SKINNER GORDON
IPC: H04J13/12 , H04B1/707 , H04B1/7075 , H04B1/7077 , H04B7/216 , H04J13/00 , H04B
Abstract: A technique for spreading information signals in a spread spectrum communication system to provide increased signal acquisition speed. A first PN spreading code or code set is used to spread information signals along with a second PN spreading code sequence or function. The second PN code is synchronized with the first PN spreading code, but has a larger code period so that each code chip of the second PN code extends over the entire period of the first PN code. The longer period spreading code forms an outer code which helps provide unambiguous beam identification and easily acquired frame timing in the presence of dynamically changing signal path delay, improving signal acquisition.
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公开(公告)号：CA2306375A1
公开(公告)日：1999-04-22
申请号：CA2306375
申请日：1998-10-14
Applicant: QUALCOMM INC
Inventor： BUTLER BRIAN , SILBERGER AMNON , SCHIFF LEONARD
Abstract: A method and appararatus for accurately determining the operating characteristics or impact of nonlinear effects on devices or communication systems transferring orthogonally coded spread-spectrum communication signals. A Walsh Power Ratio, is used to more accurately determine system response. This information can be used by power control loops in controlling or adjusting the operation of nonlinear elements or stages such as high power amplifiers in orthogonal CDMA communication systems to provide improved system response. The information can also be employed in assigning channels to systems users, and to proceed with physical changes to system hardware. The measurements used to formulate the WPR can be made to individual components or to entire systems by injecting communication signals in multiple channels containing data, and leaving at least one empty channel. The received power per channel on the output side of the system or device is then measured. A ratio of power density for the empty to the active channels is then formed. The determination of WPR for a system or components can be realized during periods of operation through periodic transfer of test signals either at allocated times or by interleaving among existing traffic signals in the system.
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公开(公告)号：ES2396182T3
公开(公告)日：2013-02-19
申请号：ES09008417
申请日：1998-05-29
Applicant: QUALCOMM INC
Inventor： BUTLER BRIAN , GILHOUSEN KLEIN
IPC: H04W68/02 , H04B7/26 , H04L1/00 , H04W4/12 , H04W48/12 , H04W52/02 , H04W68/00 , H04W68/08 , H04W76/02 , H04W84/04 , H04W84/08
Abstract: Un procedimiento para radiomensajear un terminal (10) inalámbrico en un sistema de comunicación quecomprende: transmitir un mensaje de radiomensajería rápida a través de un primer canal de radiomensajería en el quedicha transmisión de dicho mensaje de radiomensajería rápida incluye procesar dicho mensaje deradiomensajería rápida para notificar un subconjunto de terminales inalámbricos de un conjunto determinales inalámbricos (10), incluyendo dicho terminal inalámbrico (10), para empezar el procesamiento deun segundo canal de radiomensajería para un mensaje de radiomensajería completa, en el que dichomensaje de radiomensajería contiene menos información que dicho mensaje de radiomensajería completa.codificar dicho mensaje de radiomensajería completa para identificar dicho terminal inalámbrico (10) endicho subconjunto de terminales inalámbricos, en el que el procesamiento asociado al mensaje deradiomensajería rápida es inferior al asociado al mensaje de radiomensajería completa; y transmitir elmensaje codificado de radiomensajería completa mediante dicho segundo canal de radiomensajeríacompleta.
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公开(公告)号：DE69841326D1
公开(公告)日：2010-01-07
申请号：DE69841326
申请日：1998-10-09
Applicant: QUALCOMM INC
Inventor： HARMS BRIAN , BUTLER BRIAN , SKINNER GORDON DI
IPC: H04J13/12 , H04B1/707 , H04B1/7075 , H04B1/7077 , H04B7/216 , H04J13/00
Abstract: A technique for spreading information signals in a spread spectrum communication system to provide increased signal acquisition speed. A first PN spreading code or code set is used to spread information signals along with a second PN spreading code sequence or function. The second PN code is synchronized with the first PN spreading code, but has a larger code period so that each code chip of the second PN code extends over the entire period of the first PN code. The longer period spreading code forms an outer code which helps provide unambiguous beam identification and easily acquired frame timing in the presence of dynamically changing signal path delay, improving signal acquisition.
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