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    13.
    发明专利
    未知

    公开(公告)号：MX9307373A

    公开(公告)日：1994-05-31

    申请号：MX9307373

    申请日：1993-11-24

    Applicant: QUALCOMM INC

    Inventor： WEAVER LINDSAY A

    IPC: G06F17/10 ,  H04L27/22 ,  G06F17/15 ,  G06F17/16 ,  H04B1/66 ,  H04L1/06 ,  G06F11/00

    Abstract: An method and apparatus for computing a scalar projection of a vector onto another vector. The apparatus comprises a multiplying circuit and a summing circuit. The multiplying circuit is for multiplying a value representative of a first component of a first vector with a value representative of a first component of a second vector to provide a first intermediate value, and for multiplying a value representative of a second component of a first vector with a value representative of a second component of a second vector to provide a second intermediate value. The summing circuit sums the first and second intermediate values to provide a resultant value representative of the scalar projection of the first vector onto the second vector. The apparatus may further comprise a storing circuit and a selection circuit. The storing circuit is for storing the values representative of the first and second components of the first vector, and the values representative of the first and second components of the second vector. The selection circuit provides an ordered supply of these values to the multiplying circuit.

    14.
    发明专利
    未知

    公开(公告)号：DE69435004T2

    公开(公告)日：2008-04-03

    申请号：DE69435004

    申请日：1994-10-28

    Applicant: QUALCOMM INC

    Inventor： GILHOUSEN KLEIN S ,  PADOVANI ROBERTO ,  WEAVER LINDSAY A

    IPC: H04B7/005 ,  H04B7/04 ,  H04B7/216 ,  H04B7/26 ,  H04W16/24 ,  H04W36/06 ,  H04W36/18 ,  H04W52/00 ,  H04W52/14 ,  H04W52/40

    Abstract: A method and apparatus providing softer handoff of a mobile unit (90) between sectors (50, 70, and 80) of a common base station (60). A sectorized base station (60) comprises a set of demodulation elements (240A - 204N). Each demodulation element (240A - 204N) may be assigned to a signal from one of a plurality of sectors. The output of the demodulators (240A - 204N) are combined before the decoding process independent of the sector from which the data originated. This configuration provides improved output data reliability, more stable power control, and more efficient use of resources at the base station.

    Method and apparatus for measurement directed hard handoff in a CDMA system
    16.
    发明专利
    Method and apparatus for measurement directed hard handoff in a CDMA system 未知

    公开(公告)号：NZ332656A

    公开(公告)日：2000-09-29

    申请号：NZ33265697

    申请日：1997-05-22

    Applicant: QUALCOMM INC

    Inventor： WEAVER LINDSAY A ,  HOLCMAN TONI L ,  MUNSINGER DAVID B ,  ZIV NOAM A ,  BAKER KENNETH R

    IPC: H04W24/02 ,  H04W36/12 ,  H04W36/14 ,  H04Q7/20

    Abstract: In a communications network, a network user communicates using a remote unit (125) with another user (30) via at least one base station (B1A). The network includes first (MSC-I) and second (MSC-II) mobile switching control stations respectively controlling communications through a first set of base stations (B1A-B1E) including a first base station (B1A) and through a second set of base stations (B2A-B2E) including a second base station (B2A). To direct communications between the remote unit (125) and the first (B1A) and second base stations (B2A) the first base station (B1A) measures a round trip delay of an active communication signal between the first base station (B1A) and the remote unit (125). The remote unit (125) measures a first phase offset of a pilot signal received from a first candidate base station (B1A) and reports it to the first mobile switching center (MSC-I) via the first base station (B1A). The first mobile switching center (MSC-I) calculates a candidate round trip delay between the remote unit (125) and the first candidate base station (B1A) based on the first phase offset and the round trip delay of the active communication signal. An active communication control unit accesses a measurement directed hard handoff table to determine a location of the remote unit based on the round trip delay corresponding to the first active communication signal and the candidate round trip delay.

    Alternating sequential half duplex communication system
    17.
    发明专利
    Alternating sequential half duplex communication system 未知

    公开(公告)号：HK1008130A1

    公开(公告)日：1999-04-30

    申请号：HK98107081

    申请日：1998-06-26

    Applicant: QUALCOMM INC

    Inventor： GILHOUSEN KLEIN S ,  ANTONIO FRANKLIN P ,  JACOBS IRWIN M ,  WEAVER LINDSAY A

    IPC: G02B6/293 ,  G02B6/34 ,  G02B6/42 ,  H01S3/08 ,  H01S5/14 ,  H01S5/40 ,  H04B1/7136 ,  H04B7/212 ,  H04B10/155 ,  H04L5/16 ,  H04B ,  H04J

    Abstract: A message communication system employing one or more centralized communication stations transferring messages through Earth orbit repeater satellites to or from mobile terminals with at least one central communication station having a first transceiver for transmitting a first communication signal to one or more mobile terminals and at least one mobile terminal having a second transceiver for receiving the first communication signal and demodulating it, and for transmitting at a predetermined duty cycle of the second transceiver, a second communication signal to at least one of the central communication stations. The preferred duty cycle over which the second communication signal is transmitted is about fifty percent of the second transceiver duty cycle. The communication system uses Time Division Multiplexed (TDM) communication signals using a number of channels as designated address channels with the remainder being used for data transfer. Information transmitted on the address channels is used by terminals to determine both the presence of a message and its corresponding data transmission or reception channel. In addition the terminals use the reception of the first communication signal to adjust return link transmission frequency to compensate for transmission path errors. The alternating duty cycle allows mobile terminals to use a single set of local oscillators for both transmission and reception modes of operation. To decrease interference with other systems the present system employs a power dispersal modulation function to achieve the footprint of a video signal for high transfer rate digital communication signals.

    METHOD AND APPARATUS FOR INTEGRATION OF A WIRELESS COMMUNICATION SYSTEM WITH A CABLE T.V. SYSTEM
    18.
    发明专利
    METHOD AND APPARATUS FOR INTEGRATION OF A WIRELESS COMMUNICATION SYSTEM WITH A CABLE T.V. SYSTEM 未知

    公开(公告)号：NZ331304A

    公开(公告)日：1998-12-23

    申请号：NZ33130497

    申请日：1997-02-06

    Applicant: QUALCOMM INC

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

    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.

    20.
    发明专利
    未知

    公开(公告)号：AT130946T

    公开(公告)日：1995-12-15

    申请号：AT89901402

    申请日：1988-12-08

    Applicant: QUALCOMM INC

    Inventor： KERR RICHARD J ,  WEAVER LINDSAY A

    IPC: H03M1/04 ,  G06F1/03 ,  G06F3/05 ,  G06J1/00 ,  H03B28/00 ,  H03M1/08 ,  H03M1/10 ,  H03M1/66 ,  G06F7/38

    Abstract: A method and apparatus for reducing spurious output noise in digital frequency synthesizers employing sine amplitude converters connected to Digital-to-Analog converters to generate analog waveforms from sine amplitude data. Random or pseudorandom numbers having a value equal to or less than plus or minus one-half of a minimum quantization step or value change for the sine amplitude data are generated and added to the sine amplitude data with the resulting sum being transferred to the Digital-to-Analog converter. In one embodiment, a summation circuit is connected between an output of the sine function converter and an input of the Digital-to-Analog converter and also has a second input connected to a pseudorandom number generator which provides Pseudorandom numbers varying in value over a range of +/-1/2n+1 times a least significant step value, or bit for base 2, of a corresponding Digital-to-Analog input data value where n is greater than or equal to 1.

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