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公开(公告)号：DE69936671T2
公开(公告)日：2008-04-30
申请号：DE69936671
申请日：1999-04-30
Applicant: QUALCOMM INC
Inventor： CHEN TAO , TIEDEMANN EDWARD G JR , SAINTS KEITH W , GLAUSER OLIVIER
Abstract: A method and apparatus for coordinating the time at which a mobile station (5) performs searches for alternative systems to which a hard handoff will occur. In one system which includes the present invention, the mobile station (5) receives a command which instructs the mobile station (5) as to when to tune to alternative frequencies in order to search for indications of the presence of an alternative system. In another system which includes the present invention, predetermined times are defined with respect to a reference point in time that is common to both an origination base station (10) and a mobile station (5). The mobile station (5) tunes to alternative frequencies to perform searches only during these predetermined times. In addition, the mobile station (5) coordinates the transmission of reports which indicate the results of searches for alternative systems such that these reports are only transmitted from the mobile station (5) when the mobile station (5) is tuned to the origination frequency.
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公开(公告)号：NO20064804L
公开(公告)日：2008-04-25
申请号：NO20064804
申请日：2006-10-23
Applicant: QUALCOMM INC
Inventor： TIEDEMANN JR EDWARD G , SAINTS KEITH W
IPC: H04B7/005
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公开(公告)号：DE69936802T2
公开(公告)日：2008-04-24
申请号：DE69936802
申请日：1999-04-30
Applicant: QUALCOMM INC
Inventor： CHEN TAO , TIEDEMANN EDWARD G JR , SAINTS KEITH W , GLAUSER OLIVIER
Abstract: A method and apparatus for coordinating the time at which a mobile station (5) performs searches for alternative systems to which a hard handoff will occur. In one system which includes the present invention, the mobile station (5) receives a command which instructs the mobile station (5) as to when to tune to alternative frequencies in order to search for indications of the presence of an alternative system. In another system which includes the present invention, predetermined times are defined with respect to a reference point in time that is common to both an origination base station (10) and a mobile station (5). The mobile station (5) tunes to alternative frequencies to perform searches only during these predetermined times. In addition, the mobile station (5) coordinates the transmission of reports which indicate the results of searches for alternative systems such that these reports are only transmitted from the mobile station (5) when the mobile station (5) is tuned to the origination frequency.
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公开(公告)号：DE69837325T2
公开(公告)日：2007-12-20
申请号：DE69837325
申请日：1998-04-16
Applicant: QUALCOMM INC
Inventor： TIEDEMANN EDWARD G , SAINTS KEITH W
IPC: H04B7/005 , C08L23/04 , C08L23/06 , C08L23/08 , C08L23/10 , C08L23/12 , C08L23/16 , H04B1/04 , H04B7/26 , H04W52/08 , H04W52/24 , H04W52/40
Abstract: A forward link power control mechanism in a remote station (6) measures reverse link power control bits which are transmitted by one or more base stations (4a, 4b, 4n) on a forward traffic channel (10a). At the remote station (6) the reverse link power control bits from multiple base stations (4a, 4b, 4n) or multiple signal paths are measured, combined, and filtered to yield an improved measurement of the forward link signal quality. The reverse link (12a, 12b) power control bits which are deemed unreliable are omitted from use in the power control loop. The remote station (6) generates a set of forward link power control bits in accordance with the measurements and transmits these bits to all base stations (4a, 4b, 4n) in communication with the remote station (6). Each base station (4a, 4b, 4n) adjusts its gain of the forward traffic channel (10a) in accordance to its measurement of the forward link power control bit. The gains of the forward traffic channels (10a) of the base stations (4a, 4b, 4n) are corrected periodically so that erroneous reception of the forward link power control bits by the base stations do not accumulate.
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公开(公告)号：ES2280092T3
公开(公告)日：2007-09-01
申请号：ES98917971
申请日：1998-04-16
Applicant: QUALCOMM INC
Inventor： TIEDEMANN EDWARD G JR , SAINTS KEITH W
IPC: H04B7/005 , C08L23/04 , C08L23/06 , C08L23/08 , C08L23/10 , C08L23/12 , C08L23/16 , H04B1/04 , H04B7/26 , H04W52/08 , H04W52/24 , H04W52/40
Abstract: Un mecanismo de control de potencia de enlace en sentido directo en una estación remota (6) mide los bits de control de potencia inversos que se transmiten por medio de una o más estaciones base (4a, 4b, 4n) en un canal de tráfico directo (10a). En la estación remota (6) se miden los bits de control de potencia del enlace inverso de las múltiples estaciones base (4a, 4b, 4n) o los múltiples caminos de la señal, combinados, y filtrados para conseguir una medida mejorada de la calidad de la señal del enlace directo. Los bits de control de potencia del enlace inverso (12a, 12b) que se juzgan inestables se omiten del uso en el bucle de control de potencia. La estación remota (6) genera un conjunto de bits de control de potencia de enlace directo de acuerdo con las medidas y transmite estos bits a todas las estaciones base (4a, 4b, 4n) en comunicación con la estación remota (6). Cada estación base (4a, 4b, 4n) ajusta su ganancia del canal de tráfico directo (10a) en el acuerdo a su medida del bit de control de potencia del enlace directo. Las ganancias de los canales de tráfico directo (10a) de las estaciones base (4a, 4b, 4n) se corrigen periódicamente para que la recepción errónea de los bits de control de potencia del enlace directo por las estaciones base se acumule.
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Patent Agency Ranking
公开(公告)号：FI20061062A
公开(公告)日：2006-12-01
申请号：FI20061062
申请日：2006-12-01
Applicant: QUALCOMM INC
Inventor： CHEN TAO , TIEDEMANN EDWARD G JR , SAINTS KEITH W , GLAUSER OLIVER
Abstract: A method and apparatus for coordinating the time at which a mobile station (5) performs searches for alternative systems to which a hard handoff will occur. In one system which includes the present invention, the mobile station (5) receives a command which instructs the mobile station (5) as to when to tune to alternative frequencies in order to search for indications of the presence of an alternative system. In another system which includes the present invention, predetermined times are defined with respect to a reference point in time that is common to both an origination base station (10) and a mobile station (5). The mobile station (5) tunes to alternative frequencies to perform searches only during these predetermined times. In addition, the mobile station (5) coordinates the transmission of reports which indicate the results of searches for alternative systems such that these reports are only transmitted from the mobile station (5) when the mobile station (5) is tuned to the origination frequency.
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公开(公告)号：CA2286842C
公开(公告)日：2006-07-11
申请号：CA2286842
申请日：1998-04-16
Applicant: QUALCOMM INC
Inventor： TIEDEMANN EDWARD G JR , SAINTS KEITH W
IPC: H04B7/005 , C08L23/04 , C08L23/06 , C08L23/08 , C08L23/10 , C08L23/12 , C08L23/16 , H04B1/04 , H04B7/26 , H04L27/01 , H04W52/08 , H04W52/24 , H04W52/40
Abstract: A forward link power control mechanism in a remote station (6) measures reverse link power control bits which are transmitted by one or more base stations (4a, 4b, 4n) on a forward traffic channel (10a). A t the remote station (6) the reverse link power control bits from multiple base stations (4a, 4b, 4n) or multiple signal paths are measured, combined, and filtered to yield an improved measurement of the forward link signal quality. The reverse link (12a, 12b) power control bits which are deemed unreliable are omitted from use in the power control loop. The remote station (6) generates a set of forward link power control bits in accordance with the measurements and transmits these bits to all base stations (4a, 4b, 4n) in communication with the remot e station (6). Each base station (4a, 4b, 4n) adjusts its gain of the forward traffic channel (10a) in accordance to its measurement of the forward link power control bit. The gains of the forward traffic channels (10a) of the base stations (4a, 4b, 4n) are corrected periodically so that erroneous reception of the forward link power control bits by the base stations do not accumulate.
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公开(公告)号：BR9712404A
公开(公告)日：2002-05-21
申请号：BR9712404
申请日：1997-10-27
Applicant: QUALCOMM INC
Inventor： SAINTS KEITH W , TIEDEMANN EDWARD G
Abstract: A system and method for determining the transmission rate of a data signal at a receiver of a variable rate communications system. A vocoder at a transmitter encodes a frame of data into symbols according to one of a set of discrete data rates. When the data rate is lower than the maximum, each symbol is repeated a number of times as required to achieve a constant number of symbols in each frame. The data signal is transmitted at a power proportional to the data rate of the frame. A reference signal is also transmitted. The reference signal is transmitted at a constant power. Further, the data signal has the same carrier frequency as a reference signal so that they exhibit the same fading characteristics as they are transmitted through the channel. At a receiver, the power of the data signal and the power of reference signal are measured as received. The ratio of the power of the data signal to the power of the reference signal is compared with a predetermined ratio of the power of a maximum rate data signal to the power of the reference signal. The result of the comparison will indicate the encoded data rate of the received frame of data. The rate determined by the rate determination system is then used to properly decode the frame of data. A vocoder at the receiver further processes the data for interface with the user.
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公开(公告)号：ID28077A
公开(公告)日：2001-05-03
申请号：ID20002547
申请日：1999-04-30
Applicant: QUALCOMM INC
Inventor： TAO CHEN , TIEDEMANN EDWARD G JR , SAINTS KEITH W , OLIVIER GLAUSER
Abstract: A method and apparatus for coordinating the time at which a mobile station (5) performs searches for alternative systems to which a hard handoff will occur. In one system which includes the present invention, the mobile station (5) receives a command which instructs the mobile station (5) as to when to tune to alternative frequencies in order to search for indications of the presence of an alternative system. In another system which includes the present invention, predetermined times are defined with respect to a reference point in time that is common to both an origination base station (10) and a mobile station (5). The mobile station (5) tunes to alternative frequencies to perform searches only during these predetermined times. In addition, the mobile station (5) coordinates the transmission of reports which indicate the results of searches for alternative systems such that these reports are only transmitted from the mobile station (5) when the mobile station (5) is tuned to the origination frequency.
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20.发明专利
公开(公告)号：HK1021778A1
公开(公告)日：2000-06-30
申请号：HK00100374
申请日：2000-01-20
Applicant: QUALCOMM INC
Inventor： SAINTS KEITH W
Abstract: The present invention is a method and apparatus for providing a received signal quality metric which is optimally designed to control the transmission power of a transmitter in a closed loop power control system. The present invention is described in the context of a spread spectrum communication system but it is equally applicable to other types of communication systems. In the present invention, the power control system is described for controlling the power of transmissions from a base station to a mobile station, referred to as forward link transmissions.
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