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    TRANSCEIVER, POWER CONTROL SYSTEM AND METHOD FOR CONTROLLING THE TRANSMISSION SIGNAL POWER OF THE TRANSCEIVER
    73.
    发明专利
    TRANSCEIVER, POWER CONTROL SYSTEM AND METHOD FOR CONTROLLING THE TRANSMISSION SIGNAL POWER OF THE TRANSCEIVER 未知

    公开(公告)号：RO119762B1

    公开(公告)日：2005-02-28

    申请号：RO9400586

    申请日：1992-10-08

    Applicant: QUALCOMM INC

    Inventor： WHEATLEY CHARLES E

    IPC: H04B7/005 ,  H04B7/26 ,  H04W52/00 ,  H04J13/04 ,  H04W52/02 ,  H04W52/06 ,  H04W52/08 ,  H04W52/10 ,  H04W52/12 ,  H04W52/40 ,  H04W52/52 ,  H04L27/30 ,  H04Q7/32

    Abstract: The invention relates to a transceiver, to a power control system and method for controlling the transmission signal power of the transceiver. According to the invention, the power control system is destined to a cellular mobile telephone system, wherein the users communicate information signals between one another via at least one cell-site (12 and 14), by using code division multiple access spread spectrum communication signals (CDMA). The power control system controls the transmission signal power for each mobile unit (16 and 18) in the cellular mobile telephone has an antenna (70), a transmitter (84) and a receiver (72 and 74), and each cell-site (12 and 14) also has an antenna (52), a transmitter (62) and a receiver (54, 56). The power of the signals transmitted from the cell-sites (12 and 14) is measured as received at the mobile units (16 and 18). The power of the transmitter (84) is adjusted at the mobile units (16, 18) in an opposite manner with respect to increases and decreases in the received signal power. A feedback circuit may also be used for controlling the power. At the cell-sites (12, 14) in communication with the mobile unit (16, 18), the power of signals transmitted by the mobile unit (16, 18) is measured as received at the cell-sites (12, 14). A command signal is generated at the cell-site (12, 14) and transmitted to the mobile unit (16, 18) for a further adjustment of the transmitter power (84) of the mobile unit (16, 18), corresponding to power deviations in the cell-site (12 and 14). The feedback circuit is used to further adjust the power of the transmitter (84) of the mobile unit (16 and 18) so that the signals transmitted by the mobile station (16 and 18) arrive at the cell-site (12, 14) at a desired power level.

    METHOD AND APPARATUS FOR DETERMINING REPEATER USE IN WIRELESS COMMUNICATIONS
    74.
    发明专利
    METHOD AND APPARATUS FOR DETERMINING REPEATER USE IN WIRELESS COMMUNICATIONS 未知

    公开(公告)号：CA2522646A1

    公开(公告)日：2004-11-04

    申请号：CA2522646

    申请日：2004-04-16

    Applicant: QUALCOMM INC

    Inventor： WHEATLEY CHARLES E

    IPC: H04B7/26 ,  H04W64/00 ,  H04Q7/38

    Abstract: A method and apparatus for determining whether a received signal is transmitted via a repeater is described. A source signal to be conveyed via a particular repeater may include, or be modified to include, a variety of signal characteristics having a predictable relationship that remains relatively constant, which may be taken together as a signature of the repeater. The signature may reflect a composite of distinct signals. A database of repeater signature references may be developed, and an adequate match between characteristics of an unknown received signal and such signatu re references indicates that at least part of the unknown signal is transmitted via a repeater. Useful signal characteristics for repeater signatures may include some representative of signal strength, and time of arrival information, among many other possibilities.

    78.
    发明专利
    未知

    公开(公告)号：AT200371T

    公开(公告)日：2001-04-15

    申请号：AT92924105

    申请日：1992-10-08

    Applicant: QUALCOMM INC

    Inventor： WHEATLEY CHARLES E

    IPC: H04J13/04 ,  H04B7/005 ,  H04B7/26 ,  H04W52/00 ,  H04W52/02 ,  H04W52/06 ,  H04W52/08 ,  H04W52/10 ,  H04W52/12 ,  H04W52/40 ,  H04W52/52 ,  H04L27/30

    Abstract: A power control system for a cellular mobile telephone system in which system users communicate information signals between one another via at least one cell site using code division multiple access spread spectrum communication signals. The power control system controls transmission signal power for each cellular mobile telephone in the cellular mobile telephone system wherein each cellular mobile telephone has an antenna, transmitter and receiver and each cell-site also has an antenna, transmitter and receiver. Cell-site transmitted signal power is measured as received at the mobile unit. Transmitter power is adjusted at the mobile unit in an opposite manner with respect to increases and decreases in received signal power. A power control feedback scheme may also be utilized. At the cell-site communicating with the mobile unit, the mobile unit transmitted power is measured as received at the cell-site. A command signal is generated at the cell-site and transmitted to the mobile unit for further adjusting mobile unit transmitter power corresponding to deviations in the cell site received signal power. The feedback scheme is used to further adjust the mobile unit transmitter power so that mobile unit transmitted signals arrive at the cell-site at a desired power level.

    METHOD AND APPARATUS FOR INTEGRATION OF A WIRELESS COMMUNICATION SYSTEM WITH A CABLE T.V. SYSTEM
    80.
    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.

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