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公开(公告)号：DE69333883T2
公开(公告)日：2006-07-27
申请号：DE69333883
申请日：1993-03-04
Applicant: QUALCOMM INC
Inventor： TIEDEMANN G , WEAVER A , PADOVANI ROBERTO
IPC: H04L27/30 , H04B1/707 , H04B1/7103 , H04B7/26 , H04J13/00 , H04J13/10 , H04J13/16 , H04L1/16 , H04L12/28 , H04L12/403 , H04L12/413 , H04W28/04 , H04W52/48 , H04W52/50 , H04W74/00 , H04W74/08
Abstract: Collisions between messages simultaneously transmitted by multiple spread spectrum transmitters are reduced by distributing the transmissions over the available resources of the receiver. Each mobile station uses one or more randomization methods to distribute its transmissions. Each mobile station includes a microprocessor (100); an encoder (140); a timing generator (136); a PN long code sequence generator (146); and XOR gate (152). The system is used in a CDMA mobile telephone system.
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公开(公告)号：DE69531853D1
公开(公告)日：2003-11-06
申请号：DE69531853
申请日：1995-07-21
Applicant: QUALCOMM INC
Inventor： PADOVANI ROBERTO , WEAVER A , BENDER E
IPC: H04W24/02 , H04B7/005 , H04B7/26 , H04W36/06 , H04W52/04 , H04W52/14 , H04W52/24 , H04W52/40 , H04Q7/38
Abstract: A method and apparatus for matching the location of the forward link handoff boundary to the reverse link handoff boundary. A system constant is chosen which defines the product of the received power and the transmitted pilot power at every base station. The reverse link power level is measured at the base station and the forward link power level is compensated for the reverse link loading to maintain the constant product. Thereby the forward link handoff boundary to the reverse link handoff boundary are aligned to the same location.
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公开(公告)号：DE69627353D1
公开(公告)日：2003-05-15
申请号：DE69627353
申请日：1996-08-29
Applicant: QUALCOMM INC
Abstract: A method and apparatus for time division duplex (TDD) repeating a spread spectrum signal, where spread spectrum signal is comprised of a series of code symbol modulated with a pseudonoise (PN) sequence. The TDD repeater receives intermittently the spread spectrum signal at a location remote from a source supplying the spread spectrum signal. The TDD repeater amplifies and delays the received spread spectrum signal by a predetermined amount. The TDD repeater transmits intermittently the delayed amplified received spread spectrum signal such that the TDD is not receiving the spread spectrum signal when it is transmitting the signal energy.
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公开(公告)号：DE69633672T2
公开(公告)日：2005-10-20
申请号：DE69633672
申请日：1996-08-07
Applicant: QUALCOMM INC
Inventor： WEAVER A , BAYLEY GWAIN , TIEDEMANN G , GILHOUSEN S
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公开(公告)号：DE69633672D1
公开(公告)日：2004-11-25
申请号：DE69633672
申请日：1996-08-07
Applicant: QUALCOMM INC
Inventor： WEAVER A , BAYLEY GWAIN , TIEDEMANN G , GILHOUSEN S
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Patent Agency Ranking
公开(公告)号：DE69133017D1
公开(公告)日：2002-06-27
申请号：DE69133017
申请日：1991-06-21
Applicant: QUALCOMM INC
Inventor： GILHOUSEN S , JACOBS M , PADOVANI ROBERTO , WEAVER A , WHEATLEY E , VITERBI J
IPC: H04B1/707 , H04B1/7075 , H04B1/709 , H04B1/7115 , H04B7/005 , H04B7/26 , H04J3/02 , H04J3/16 , H04J3/22 , H04J11/00 , H04J13/00 , H04J13/10 , H04J13/18 , H04L20060101 , H04L1/00 , H04L1/06 , H04L1/08 , H04L5/02 , H04L5/12 , H04L23/02 , H04L27/30 , H04W52/26
Abstract: A cell site, comprising: means for modulating configured to format digital data for transmission on a communications channel and to insert at least one timing command into the digital data, the digital data comprising a plurality of bits; means for transmitting coupled to the means for modulating and configured to receive the digital data from the means for modulating, convert the digital data to analog data, and transmit the analog data on the communications channel; and means for receiving configured to receive a signal from at least one remote unit and to determine a timing error of the received signal to be used to generate the timing command in accordance with the timing error, the means for receiving being coupled to the means for modulating and configured to provide the timing command to the means for modulating.
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公开(公告)号：DE69835080D1
公开(公告)日：2006-08-10
申请号：DE69835080
申请日：1998-06-16
Applicant: QUALCOMM INC
Inventor： WEAVER A
Abstract: A novel and improved method and apparatus for generating a reduced peak amplitude high data rate channel comprised of a set of lower rate channels is described. The set of lower rate channels are phase rotated before being summed and transmitted. The amount of phase rotation is dependent on the number of channels used to form the higher rate channel. In an embodiment where two lower rate channels are used, the in-phase and quadrature-phase components of the two channels are complex multiplied before upconversion with an in-phase and quadrature-phase sinusoids. For a high rate channel comprised of more than two lower rate channels, the in-phase and quadrature-phase component of each channel is upconverted with a set of sinusoids that are phase offset from one another.
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公开(公告)号：DE69333883D1
公开(公告)日：2006-02-23
申请号：DE69333883
申请日：1993-03-04
Applicant: QUALCOMM INC
Inventor： TIEDEMANN G , WEAVER A , PADOVANI ROBERTO
IPC: H04B1/707 , H04B1/7103 , H04B7/26 , H04J13/00 , H04J13/10 , H04J13/16 , H04L1/16 , H04L12/28 , H04L12/403 , H04L12/413 , H04L27/30 , H04W28/04 , H04W52/48 , H04W52/50 , H04W74/00 , H04W74/08
Abstract: Collisions between messages simultaneously transmitted by multiple spread spectrum transmitters are reduced by distributing the transmissions over the available resources of the receiver. Each mobile station uses one or more randomization methods to distribute its transmissions. Each mobile station includes a microprocessor (100); an encoder (140); a timing generator (136); a PN long code sequence generator (146); and XOR gate (152). The system is used in a CDMA mobile telephone system.
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公开(公告)号：DE69333633D1
公开(公告)日：2004-10-28
申请号：DE69333633
申请日：1993-03-04
Applicant: QUALCOMM INC
Inventor： TIEDEMANN G , WEAVER A , KERR J , GEIB M
IPC: H04J3/16 , H04B1/16 , H04B7/26 , H04W24/00 , H04W48/08 , H04W52/02 , H04W56/00 , H04W72/04 , H04W72/12 , H04W74/04
Abstract: A system for reducing receiver power consumption in communication system having a transmitter and one or more receivers schedules periodic messages in "slots." Each receiver is assigned a slot during which it monitors the transmissions. The transmitter transmits messages to the receiver only during the assigned slots. The receiver is in an "active state" during its assigned slot. It may remain in the active state after its assigned slot if the message requires the receiver to perform additional actions. During the "inactive state," which is the time period between successive occurrences of its assigned slot, the receiver may perform any action not requiring coordination with the transmitter. It may conserve power during this time by removing power from one or more components such as those used for monitoring the transmissions. At a time during the inactive state shortly before the assigned slot, the receiver applies power to these components and performs initializations. Such initializations may include reacquiring a pilot channel signal to which the receiver may synchronize itself if its timing signals have drifted out of synchronization with those of the transmitter during the preceding inactive state.
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公开(公告)号：DE69531853T2
公开(公告)日：2004-08-19
申请号：DE69531853
申请日：1995-07-21
Applicant: QUALCOMM INC
Inventor： PADOVANI ROBERTO , WEAVER A , BENDER E
IPC: H04W24/02 , H04B7/005 , H04B7/26 , H04W36/06 , H04W52/04 , H04W52/14 , H04W52/24 , H04W52/40 , H04Q7/38
Abstract: A method and apparatus for matching the location of the forward link handoff boundary to the reverse link handoff boundary. A system constant is chosen which defines the product of the received power and the transmitted pilot power at every base station. The reverse link power level is measured at the base station and the forward link power level is compensated for the reverse link loading to maintain the constant product. Thereby the forward link handoff boundary to the reverse link handoff boundary are aligned to the same location.
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