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111. 发明专利

AU4052900A Method and apparatus for determining the location of a remote station in a cdma communication network 未知
公开(公告)号：AU4052900A
公开(公告)日：2000-10-16
申请号：AU4052900
申请日：2000-03-28
申请人： QUALCOMM INC
发明人： SOLIMAN SAMIR S , VAYANOS ALKINOOS HECTOR
IPC分类号： G01S5/02 , G01S5/10 , G01S19/25 , G01S19/38 , H04W64/00 , H04Q7/38
摘要： An apparatus and method for locating a remote station in a synchronous communications network using the time of arrival of a reference pilot signal at the remote station as a time reference. The time difference of arrival (TDOA) of GPS signals received by the remote station and other signals received from a base station, are measured relative to this reference time. From these measurements, the location of the remote station is determined. The invention treats the location issue as a TDOA problem.

112. 发明专利

CA2362517A1 METHOD AND APPARATUS FOR GPS ASSISTANCE IN A COMMUNICATION SYSTEM 未知
公开(公告)号：CA2362517A1
公开(公告)日：2000-08-17
申请号：CA2362517
申请日：2000-02-14
申请人： QUALCOMM INC
发明人： AGASHE PARAG A , SOLIMAN SAMIR S , VAYANOS ALKINOOS HECTOR
IPC分类号： G01S19/27 , G01S1/00 , G01S5/00 , G01S19/05 , G01S19/48 , H04Q7/34 , G01S5/14
摘要： A method and apparatus for efficiently transmitting location assistance information to a mobile communication device over a control channel with a minimal impact on the capacity of the control channel. A position location server provides a difference between satellite locations which have been computed using Almanac data and then Ephemeris data. Sending only the difference between the locations and clock corrections computed using the tw o different data types, the total amount of information to be transmitted to a mobile communication device is significantly reduced. Furthermore, by providing rate of change information, the method and apparatus allows the location assistance information to remain valid for a relatively long time after it has been received by the mobile communication device.

113. 发明专利

CZ20000216A3 Process and apparatus for selection of base station for communication with user's station 未知
公开(公告)号：CZ20000216A3
公开(公告)日：2000-07-12
申请号：CZ20000216
申请日：1998-07-21
申请人： QUALCOMM INC
发明人： SOLIMAN SAMIR S
IPC分类号： H04B7/26 , H04W40/08 , H04Q7/38

114. 发明专利

CA2352775A1 FORWARD AND REVERSE LINK POWER CONTROL USING POSITION AND MOBILITY INFORMATION 未知
公开(公告)号：CA2352775A1
公开(公告)日：2000-06-08
申请号：CA2352775
申请日：1999-11-30
申请人： QUALCOMM INC
发明人： SOLIMAN SAMIR S
IPC分类号： H04B1/04 , H04B7/005 , H04B7/26 , H04W52/12 , H04W52/22 , H04W52/24 , H04W52/28 , H04W52/36
摘要： A method and apparatus for dynamically adjusting a power control loop that attempts to maintain either the transmit power of a signal sent from a base station to a mobile station or the signal to noise ratio of a signal sent fr om the mobile station (300) to the base station (400) above a minimum threshold and below a maximum threshold. Location information that is representative o f the distance and morphology between the mobile station (300) and the base station (400) and the velocity of the mobile station (300) are determined. T he minimum and the maximum thresholds of the power control loop are then adjust ed in accordance with the location and the mobility information such that the minimum and the maximum threshold vary as the distance and the morphology between the mobile station (300) and the base station (400) and the velocity of the mobile station (300) change. In addition, the step size used to increase or decrease the transmit signal power, is adjusted in accordance wi th the velocity of the mobile station (300). A transmitter sends the signal at a power level that is controlled by the power control loop with the adjusted minimum threshold.

115. 发明专利

AU6027299A Method and apparatus for increasing the sensitivity of a global positioning satellite receiver 未知
公开(公告)号：AU6027299A
公开(公告)日：2000-03-27
申请号：AU6027299
申请日：1999-09-02
申请人： QUALCOMM INC
发明人： SOLIMAN SAMIR S , GLAZKO SERGUEI A , AGASHE PARAG A
IPC分类号： G01S1/00 , G01S19/25 , G01S19/27 , G01S19/30 , G01S1/04
摘要： Method and apparatus providing enhanced sensitivity for GPS receivers (400, 500, 600, 700) by allowing coherent integration of a correlation over several code periods of a GPS signal in one embodiment, and by performing a time to frequency domain conversion to the output from a correlation processor (507) in a second embodiment. In the case in which coherent integration is performed over several code periods, advantage is taken of the fact that CDMA cellular telephone base stations transmit information that allows the receiver to determine GPS time before beginning a GPS signal acquisition process. The integration can be expanded to include code periods from more than one bit period, if the GPS receiver (400, 500, 600, 700) takes advantage of the fact that known bit patterns are transmitted at particular times within the transmission from a GPS satellite. If no base station is within range, then the output from a correlator (507) that integrates a correlation over one code period is used to generate values that are input to a discrete time domain to frequency domain transform processor (511). The output from the transform processor (511) will indicate the presence of a signal from a particular satellite and the offset between locally generated signal and the received GPS signal.

116. 发明专利

AU3087999A System and method for determining the position of a wireless cdma transceiver 未知
公开(公告)号：AU3087999A
公开(公告)日：1999-10-11
申请号：AU3087999
申请日：1999-03-16
申请人： QUALCOMM INC
发明人： SOLIMAN SAMIR S , GILHOUSEN KLEIN S
IPC分类号： G01S19/23 , G01S1/00 , G01S5/00 , G01S5/02 , G01S5/14 , G01S19/03 , G01S19/09 , G01S19/12 , G01S19/25 , G01S19/46 , G04G7/00 , G04G7/02 , H04B7/15 , H04W64/00
摘要： A system and method for determining a position of a mobile wireless transceiver. A Doppler shift of signals transmitted from first and second satellites, respectively, relative to a base station is calculated. A first set of pseudo ranges of the first and second satellites, respectively, relative to the base station is also calculated. Satellite identification information, Doppler shift information, and the pseudo range information between the base station and the wireless transceiver is sent to wireless transceiver. The wireless transceiver use the information received from the base station to identify a second set of pseudo ranges between the wireless transceiver and the first and second satellites, respectively, at a time tx. The wireless transceiver sends the second set of pseudo ranges between the wireless transceiver and the first and second satellites, respectively, along with time information tx to the base station, in response to which, the base station calculate the position of the wireless transceiver.

117. 发明专利

NO994323D0 未知
公开(公告)号：NO994323D0
公开(公告)日：1999-09-06
申请号：NO994323
申请日：1999-09-06
申请人： QUALCOMM INC
发明人： HUGHES ROBBIN D , AULT JAN C , SOLIMAN SAMIR S
IPC分类号： H04W48/18 , H04W28/12 , H04W88/06 , H04Q
摘要： A wireless communication device which automatically and seamlessly switches to an alternate, available system when it is unable to complete a call origination attempt, without requiring the user to take any affirmative actions to select the alternate system or re-initiate a call origination. The wireless communication device decreases the percentage of call failures by providing a hold-over of pending call origination attempts until service is finally acquired. In the case of either exceeding the maximum number of access sequences (reverse link limited) or failure to acquire the forward link of the preferred communication system (forward link limited), the user is not required to re-initiate the call origination, thus turning a potential call failure into a success.

118. 发明专利

AU8492098A A method of and apparatus for selecting base stations to communicate with a remote station 未知
公开(公告)号：AU8492098A
公开(公告)日：1999-02-10
申请号：AU8492098
申请日：1998-07-21
申请人： QUALCOMM INC
发明人： SOLIMAN SAMIR S
IPC分类号： H04B7/26 , H04W36/18 , H04W48/20 , H04W72/04 , H04Q7/38
摘要： At the mobile station the measured pilot energy of each pilot in the candidate set is iteratively compared against a threshold generated in accordance with the sum of the energies of the pilots in the active set. If the strongest pilot in the candidate set satisfies this threshold condition, it is added to the revised active set. A second iterative process is performed to determine whether a pilot should be deleted from the revised active set. The mobile station determines whether a change to the current active set is desirable by measuring the energies of the pilots in the active set and the candidate set, and dynamically adjusting the necessary thresholds based on its own estimation of the communication environment.

119. 发明专利

BR9506283A 未知
公开(公告)号：BR9506283A
公开(公告)日：1997-08-12
申请号：BR9506283
申请日：1995-07-13
申请人： QUALCOMM INC
发明人： SOLIMAN SAMIR S
IPC分类号： H04J13/04 , H04B7/005 , H04B7/26 , H04B17/00 , H04W16/10 , H04W52/18 , H04W52/34
摘要： A method and apparatus for simulating signal interference within a communication system, such wireless or cellular communication systems. The communication system is preferably of a type in which code division multiple access (CDMA) spread spectrum communication signals are used. The method for simulating signal interference power received by a base station receiver includes estimating a first composite signal power corresponding to the sum of signal power transmitted by a first set of simulated users located in a first cell. An estimate is also made of a first normalized date rate for transmission of the composite signal. A first interference signal is then generated at a power level determined on the basis of the first composite signal power and normalized data rate. In a preferred implementation, the first interference signal power is adjusted in accordance with an average power fluctuation arising as a consequence of closed loop power control. Further, a second composite signal power is determined by estimating the sum of signal power transmitted by a second set of simulated users located outside of the first cell. A similar estimate is made of a second normalized data rate at which this signal power is transmitted by the second set of simulated users. This allows the generation of a second interference signal based on the second composite signal power and normalized data rate. Generation of the first interference signal will typically involve synthesis of electrical noise over a predetermined frequency band. The power of the electrical noise is then adjusted in accordance with the product of the first composite signal power and the first normalized data rate.

120. 发明专利

BR0008098B1 未知
公开(公告)号：BR0008098B1
公开(公告)日：2014-10-07
申请号：BR0008098
申请日：2000-02-14
申请人： QUALCOMM INC
发明人： AGASHE PARAG A , VAYANOS ALKINOOS HECTOR , SOLIMAN SAMIR S
IPC分类号： G01S19/27 , G01S1/00 , G01S5/00 , G01S19/05 , G01S19/48 , H04Q7/34
摘要： A method and apparatus for efficiently transmitting location assistance information to a mobile communication device over a control channel with a minimal impact on the capacity of the control channel. A position location server provides a difference between satellite locations which have been computed using Almanac data and then Ephemeris data. Sending only the difference between the locations and clock corrections computed using the two different data types, the total amount of information to be transmitted to a mobile communication device is significantly reduced. Furthermore, by providing rate of change information, the method and apparatus allows the location assistance information to remain valid for a relatively long time after it is has been received by the mobile communication device.

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