公开(公告)号：FI118364B

公开(公告)日：2007-10-15

申请号：FI935105

申请日：1993-11-17

Applicant: QUALCOMM INC

Inventor： GILHOUSEN KLEIN S ,  PADOVANI ROBERTO ,  WHEATLEY CHARLES E ,  WEAVER LINDSAY A JR ,  BLAKENEY ROBERT D

IPC: H04B7/005 ,  H04J13/00 ,  H04B7/26 ,  H04L27/30 ,  H04W52/00 ,  H04W52/02 ,  H04W52/06 ,  H04W52/08 ,  H04W52/10 ,  H04W52/12 ,  H04W52/34 ,  H04W52/36 ,  H04W52/40 ,  H04W52/52

Abstract: A cellular communication system in which a system user and another user communicate with each other by way of information carrying spread spectrum modulated signals transmitted via a cell-site in which system: the system user comprises a transmitter for transmitting information carrying spread spectrum modulated signals to said cell-site, a receiver for receiving information carrying spread spectrum modulated signals from said cell-site and means for measuring signal quality in said information carrying spread spectrum modulated signals received by the system user; the cell-site comprises a transmitter for transmitting information carrying spread spectrum modulated signals to said system user, a receiver for receiving information carrying spread spectrum modulated signals from said system user and adjusting means for adjusting the power of information carrying spread spectrum modulated signals transmitted from the cell-site ; ; and power control means is provided for controlling the transmission power of the information carrying spread spectrum modulated signals by measuring the signal power in the information carrying spread spectrum modulated signals received by the system user and transmitting data representing the measured power to the cell-site by way of the information carrying spread spectrum modulated signals, the adjusting means being responsive to the data in the information carrying spread spectrum modulated signals from the system user to adjust the power in the information carrying spread spectrum modulated signals transmitted by the cell-site.

公开(公告)号：HK1092960A1

公开(公告)日：2007-02-16

申请号：HK06110335

申请日：2006-09-15

Applicant: QUALCOMM INC

Inventor： GILHOUSEN KLEIN S ,  WEAVER LINDSAY A JR ,  JACOBS IRWIN M

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.

公开(公告)号：ES2247583T3

公开(公告)日：2006-03-01

申请号：ES93907229

申请日：1993-03-04

Applicant: QUALCOMM INC

Inventor： TIEDEMANN EDWARD G JR ,  WEAVER LINDSAY A JR ,  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: INTERFERENCIAS ENTRE MENSAJES TRANSMITIDOS SIMULTANEAMENTE POR VARIOS TRANSMISORES DE ESPECTRO DE PROPAGACION SE REDUCEN DISTRIBUYENDO LA TRANSMISION SOBRE LOS RECURSOS DISPONIBLES DEL RECEPTOR. CADA ESTACION MOVIL UTILIZA UNO O MAS METODOS ALEATORIOS PARA DISTRIBUIR SUS TRANSMISIONES. CADA ESTACION MOVIL INCLUYE UN MICROPROCESADOR (100); UN CODIFICADOR (140); UN GENERADOR DE SINCRONIZACION (136); UN GENERADOR (146) DE SECUENCIA DE CODIGO LARGO PN; Y UNA PUERTA XOR (152). EL SISTEMA SE USA EN UN SISTEMA TELEFONICO MOVIL CDMA.

公开(公告)号：DK0629325T3

公开(公告)日：2006-01-23

申请号：DK93907229

申请日：1993-03-04

Applicant: QUALCOMM INC

Inventor： TIEDEMANN EDWARD G JR ,  PADOVANI ROBERTO ,  WEAVER LINDSAY A JR

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.

公开(公告)号：AU2001238005B2

公开(公告)日：2005-05-05

申请号：AU2001238005

申请日：2001-01-31

Applicant: QUALCOMM INC

Inventor： WEAVER LINDSAY A JR ,  PADOVANI ROBERTO ,  BLACK PETER J

IPC: H04B1/7073 ,  H03K3/84 ,  H04B1/707 ,  H04J13/00 ,  H04J13/10 ,  H04Q7/38 ,  H04B001/707 ,  H04B007/26

Abstract: Techniques to improve the acquisition process in a spread spectrum environment. The signals from different CDMA systems are spread with different sets of PN sequences, with the PN sequences in each set being uncorrelated to the PN sequences in the other sets. By using uncorrelated PN sequences, the likehood of detecting a pilot signal from an undesired system is reduced or minimized, and the mean time to acquisition of the pilot signal from the desired system is improved. The mobile station can attempt to acquire the pilot signal by processing the received signal with a first set of PN sequences corresponding to a first hypothesis of the particular signal being acquired. If acquisition of the pilot signal fails, a second set of PN sequences corresponding to a second hypothesis is selected and used to process the received signal. The PN sequences in the second set are uncorrelated to the PN sequences in the first set. The PN sequences for the first set can be generated based on the characteristic polynomials defined by IS-95-A, and the PN sequences for the second set can be the reverse of the PN sequences for the first set.

公开(公告)号：FI115368B

公开(公告)日：2005-04-15

申请号：FI944057

申请日：1994-09-02

Applicant: QUALCOMM INC

Inventor： TIEDEMANN EDWARD G JR ,  WEAVER LINDSAY A JR ,  KERR RICHARD J ,  GEIB KENNETH M

IPC: H04J3/16 ,  H04B1/16 ,  H04B7/26 ,  H04W24/00 ,  H04W48/08 ,  H04W52/02 ,  H04W56/00 ,  H04W72/04 ,  H04W72/12 ,  H04W74/04 ,  H04Q7/32

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.

公开(公告)号：DK0629324T3

公开(公告)日：2005-01-10

申请号：DK93907228

申请日：1993-03-04

Applicant: QUALCOMM INC

Inventor： TIEDEMANN EDWARD G JR ,  KERR RICHARD J ,  GEIB KENNETH M ,  WEAVER LINDSAY A JR

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.

公开(公告)号：AT279843T

公开(公告)日：2004-10-15

申请号：AT97906497

申请日：1997-02-06

Applicant: QUALCOMM INC

Inventor： DEAN RICHARD F ,  WEAVER LINDSAY A JR ,  WHEATLEY CHARLES E III

IPC: H04W52/04 ,  H04N7/173 ,  H04W88/08 ,  H04Q7/36 ,  H04Q7/30

Abstract: The present invention is a method and apparatus for integrating a personal communication system with a cable television plant. A set of radio antenna devices (RAD) are connected to the cable plant. The RADs provide frequency conversion and power control of signal received from the cable plant for wireless transmission to the remote units. The RADs also provide power control and frequency conversion of wireless signals received from the remote units for transmission by the RADs onto the cable plant. In addition to the functions of standard base stations and centralized controller, the CATV base station must also compensate for gain variations in the cable plant. The downstream power control is regulated by a RAD reference signal which can be hidden within the CDMA signal for maximum efficiency. The upstream power control is regulated by an upstream gain reference signal which is individually transmitted by each RAD on the upstream link. The architecture of the present invention lends itself to a great deal of flexibility. Each RAD can operate as either an element of a distributed antenna or a base station sector unto itself. The function of each RAD as distributed antenna or as sector can be remotely programmed from the headend processor. Thus the capacity density of the system can be changed to accommodate the changing traffic density. The flexibility also is important at system deployment. When the system is deploy, the entire system may feed only one sector at the base station thus reducing the start-up cost of implementing a system. As system traffic increases, more resources can simply be added at the headend to provide more capacity.

公开(公告)号：ES2208684T3

公开(公告)日：2004-06-16

申请号：ES95927333

申请日：1995-07-21

Applicant: QUALCOMM INC

Inventor： PADOVANI ROBERTO ,  WEAVER LINDSAY A JR ,  BENDER PAUL 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.

公开(公告)号：PT676107E

公开(公告)日：2004-05-31

申请号：PT94932118

申请日：1994-10-28

Applicant: QUALCOMM INC

Inventor： BLAKENEY ROBERT D II ,  WEAVER LINDSAY A JR ,  WILLIAMSON PAUL T ,  ZIV NOAM A ,  PADOVANI ROBERTO

IPC: H04B1/7087 ,  H04B1/7117 ,  H04B7/08 ,  H04B7/26 ,  H04J13/00

Abstract: In a receiver having a plurality of demodulation elements, a method of assigning the plurality of demodulation element so a set of available signals. A first method emphasizes diversity of transmitting devices so that power control is optimal. A second method emphasizes the maximum signal strength available to produce aggregate maximum signal strength. Both methods control the number of reassignments so that excessive data is not lost during the reassignment process. The apparatus comprises the plurality of demodulation elements, at least one searcher element, and a controller.