公开(公告)号：EP0629324A4

公开(公告)日：1999-09-15

申请号：EP93907228

申请日：1993-03-04

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

CPC classification number: H04B1/1615 ,  H04B2201/70709 ,  H04W24/00 ,  H04W52/0216 ,  H04W52/0219 ,  H04W56/00 ,  H04W68/02 ,  H04W72/04 ,  H04W72/0413 ,  H04W72/12 ,  H04W74/04 ,  Y02D70/00 ,  Y02D70/1222 ,  Y02D70/164 ,  Y02D70/26 ,  Y02D70/40

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：EP0584241A4

公开(公告)日：1996-07-31

申请号：EP92912546

申请日：1992-05-17

Applicant: QUALCOMM INC

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

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

CPC classification number: H04W52/40 ,  H04B7/0671 ,  H04B7/2628 ,  H04W52/0245 ,  H04W52/06 ,  H04W52/08 ,  H04W52/10 ,  Y02D70/00 ,  Y02D70/21 ,  Y02D70/444 ,  Y02D70/449

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：WO0156172A3

公开(公告)日：2002-02-21

申请号：PCT/US0103243

申请日：2001-01-31

Applicant: QUALCOMM INC

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

IPC: H03K3/84 ,  H04B1/707 ,  H04J13/00 ,  H04J13/10 ,  H04Q7/38 ,  H04B7/26

CPC classification number: H04J13/10 ,  H03K3/84 ,  H04B1/707 ,  H04J13/0022

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.

Abstract translation: 在扩展频谱环境中改进采集过程的技术。 来自不同CDMA系统的信号用不同的PN序列集合扩展，每组中的PN序列与其他集合中的PN序列不相关。 通过使用不相关的PN序列，检测来自不需要的系统的导频信号的相似性被减少或最小化，并且提高了从所需系统获取导频信号的平均时间。 移动台可以通过用对应于所获取的特定信号的第一假设的第一组PN序列处理接收到的信号来尝试获取导频信号。 如果导频信号的获取失败，则选择对应于第二假设的第二组PN序列来处理接收到的信号。 第二组中的PN序列与第一组中的PN序列不相关。 可以基于由IS-95-A定义的特征多项式来生成第一组的PN序列，并且第二组的PN序列可以是第一组的PN序列的相反。

公开(公告)号：WO9708854A3

公开(公告)日：1997-06-19

申请号：PCT/US9613868

申请日：1996-08-29

Applicant: QUALCOMM INC

Inventor： WEAVER LINDSAY A JR ,  ANTONIO FRANKLIN P ,  DEAN RICHARD F

IPC: H04L5/16 ,  H04B7/005 ,  H04B7/15 ,  H04B7/26 ,  H04J3/08 ,  H04W16/26 ,  H04W52/40 ,  H04W52/46

CPC classification number: H04W52/46 ,  H04B7/15535 ,  H04B7/2606 ,  H04B7/2618 ,  H04W16/26 ,  H04W52/40

Abstract: A method and apparatus for time division duplex (TDD) repeating a spread spectrum signal, said spread spectrum signal comprised of a series of code symbol modulated with a pseudonoise (PN) sequecne. 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.

公开(公告)号：WO9642149A3

公开(公告)日：1997-03-06

申请号：PCT/US9609684

申请日：1996-06-07

Applicant: QUALCOMM INC

Inventor： BROCK MICHAEL P ,  KHATIBI FARROKH ,  ROBBINS BARRY R ,  WEAVER LINDSAY A JR

IPC: H04L12/66 ,  H04Q7/24 ,  H04L

CPC classification number: H04L12/66

Abstract: A fast and efficient packet transmission system and method for transmitting and routing packets through a digital communications network (101, 102, 103, 104, 105 and 106) which utilizes both variable length packets and fixed length packets, or cells, for achieving maximum efficiency and minimum delay in the digital communications network. Network efficiency is maximized by using variable length packets to transmit information across transmission lines (102) and network speed is maximized by using cells to route information to their intended destinations.

公开(公告)号：FI122087B

公开(公告)日：2011-08-15

申请号：FI20095859

申请日：2009-08-20

Applicant: QUALCOMM INC

Inventor： GILHOUSEN KLEIN S ,  JACOBS IRWIN M ,  PADOVANI ROBERTO ,  WEAVER LINDSAY A JR ,  VITERBI ANDREW J ,  WHEATLEY III CHARLES E

IPC: H04L27/30 ,  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 ,  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：FI20100206A

公开(公告)日：2010-05-12

申请号：FI20100206

申请日：2010-05-12

Applicant: QUALCOMM INC

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

IPC: H04B20100101 ,  H04J13/00 ,  H04B7/005 ,  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：DE69334205T2

公开(公告)日：2009-03-05

申请号：DE69334205

申请日：1993-03-04

Applicant: QUALCOMM INC

Inventor： TIEDEMANN EDWART G JR ,  WEAVER LINDSAY A JR ,  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.

公开(公告)号：DE69334204T2

公开(公告)日：2009-03-05

申请号：DE69334204

申请日：1993-03-04

Applicant: QUALCOMM INC

Inventor： TIEDEMANN EDWART G JR ,  WEAVER LINDSAY A JR ,  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.

公开(公告)号：ES2299185T3

公开(公告)日：2008-05-16

申请号：ES97929732

申请日：1997-05-23

Applicant: QUALCOMM INC

Inventor： WEAVER LINDSAY A JR ,  MUNSINGER DAVID B ,  PADOVANI ROBERTO ,  ZIV NOAM A ,  KARMI GADI ,  GILHOUSEN KLEIN S

IPC: H04W24/02 ,  H04W36/14

Abstract: Un procedimiento para dirigir las comunicaciones entre una unidad (18, 155) remota y una primera estación (150, 200, B1, B1A, B1C a B1E, T1 a T3) base en una red de comunicaciones en la que un usuario (30) de red se comunica a través de la unidad (18, 155) remota con otro usuario a través de al menos una estación base, incluyendo dicha red de comunicaciones un primer centro (212, MSC-I) de conmutación móvil para controlar las comunicaciones a través de un primer conjunto de estaciones base que incluye la primera estación (150, 200, B1, B1A, B1C a B1E, T1 a T3) base que presenta características similares que permiten traspaso continuo intrasistema entre las mismas, y medios para designar una estación base como una estación base de límite en una ubicación que limita con un segundo conjunto de estaciones base que tiene características diferentes a las características del primer conjunto de estaciones base para hacer más complicado el traspaso continuo intersistema entre el primer y el segundo conjunto, comprendiendo el procedimiento: almacenar en dicha unidad (18, 155) remota una lista de estaciones base activas que comprende una entrada correspondiente a cada estación base con la que se establece comunicación activa y en la que dicha primera estación (150, 200, B1, B1A, B1C a B1E, T1 a T3) base presenta una entrada en dicha lista de estaciones base activas; y medir, en dicha primera estación (150, 200, B1, B1A, B1C a B1E, T1 a T3) base, un retardo de ida y vuelta de una primera señal de comunicación activa entre dicha primera estación (150, 200, B1, B1A, B1C a B1E, T1 a T3) base y dicha unidad (18, 155) remota, caracterizado por: iniciar un traspaso de dicha primera señal de comunicación activa a una de dicho segundo conjunto de estaciones base si dicho retardo de ida y vuelta de dicha primera comunicación activa supera un umbral y si dicha primera estación (150, 200, B1, B1A, B1C a B1E, T1 a T3) base está designada como una estación base de límite.