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    11.
    发明专利
    未知

    公开(公告)号：DE69231769T2

    公开(公告)日：2001-11-22

    申请号：DE69231769

    申请日：1992-10-08

    Applicant: QUALCOMM INC

    Inventor： WHEATLEY 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.

    12.
    发明专利
    未知

    公开(公告)号：DE69231769D1

    公开(公告)日：2001-05-10

    申请号：DE69231769

    申请日：1992-10-08

    Applicant: QUALCOMM INC

    Inventor： WHEATLEY 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.

    15.
    发明专利
    未知

    公开(公告)号：DE69731186D1

    公开(公告)日：2004-11-18

    申请号：DE69731186

    申请日：1997-02-06

    Applicant: QUALCOMM INC

    Inventor： DEAN F ,  WEAVER A ,  WHEATLEY E

    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.

    17.
    发明专利
    未知

    公开(公告)号：DE69530696D1

    公开(公告)日：2003-06-12

    申请号：DE69530696

    申请日：1995-09-27

    Applicant: QUALCOMM INC

    Inventor： KORNFELD K ,  WHEATLEY E

    IPC: H04B1/38 ,  H04B1/40 ,  H04B7/005 ,  H04B7/12 ,  H04B7/208 ,  H04B7/26 ,  H04J1/04 ,  H04L1/04 ,  H04L5/06 ,  H04Q11/02 ,  H04W36/14 ,  H04W36/18

    Abstract: The dual band code division multiple access radio of the present invention operates on multiple frequencies simultaneously on either transmit or receive. The transmit path operates by splitting the transmit intermediate frequency (IF) path (103) and mixing the IF to two different transmit frequencies using two frequency synthesizers (140 and 145). The receive path (104) has two RF channels (116 and 117) that are mixed with the frequencies generated by the synthesizers (140 and 145) and summed into one IF strip. Thus the radio of the present invention can perform a soft hand-off between frequencies while communicating with both base stations simultaneously. Additional mixing paths and synthesizers can be added if it is desired to communicate with more than two base stations simultaneously.\!

    19.
    发明专利
    未知

    公开(公告)号：DE69934496T2

    公开(公告)日：2007-09-27

    申请号：DE69934496

    申请日：1999-07-27

    Applicant: QUALCOMM INC

    Inventor： WHEATLEY E ,  TIEDEMANN G ,  ODENWALDER P ,  KRISHNAMURTHI RAJEEV

    IPC: H04L12/28 ,  H04B7/26 ,  H04W16/16

    Abstract: A method and system for operation of a personal base station where the forward link of a personal base station is on the same frequency assignment as a first forward link data signal transmitted by a macro base station belonging to a cellular communication system. A first subscriber station communicates with the macro base station. The personal base station generates a second forward link data signal and communicates with a second subscriber station. The personal base station receives the first forward link data signal and combines it with its own second forward link data signal to form a combined forward link data signal. The personal base station then transmits the combined forward link data signal. The first subscriber station is able to receive and diversity combine the combined forward link data signal, improving the signal to noise ratio that would otherwise occur in the vicinity of the personal base station.

    20.
    发明专利
    未知

    公开(公告)号：DE69836097D1

    公开(公告)日：2006-11-16

    申请号：DE69836097

    申请日：1998-11-30

    Applicant: QUALCOMM INC

    Inventor： ODENWALDER P ,  LUNDBY A ,  WHEATLEY E ,  TIEDEMANN G

    IPC: H04B7/06 ,  H04L1/00 ,  H04L1/06

    Abstract: A method and apparatus for providing diversity transmissions to a mobile unit from a transmitting station having at least first and second antennas by repeatedly switching between the two antennas during the transmission of information to the receiving unit. Message information is transmitted from the first antenna in the transmitting station to the receiving unit. After the start of the transmission of the message information from the first antenna, transmission of the message information from the first antenna to the receiving unit terminates and transmission of the message information from the second antenna in the transmitting station to the receiving unit is initiated. Some time after transmission of the message information from second antenna is initiated, the transmission of the message information from the second antenna to the receiving unit terminates and transmission of the message information from the first antenna in the transmitting station to the receiving unit is initiated. Repeated switching between the first and second antennas is achieved by repeating the process. The switching results in diversity transmissions that improve the ability of a receiving unit to receive the coded and interleaved transmitted message information from the transmitting station. The interleaver disperses the encoded symbols in each antenna dwell period such that the decoder decisions are based on a mix of symbols form each antenna. Therefore the decoder decisions are unreliable only when the mix of symbols from the different antennas, with different fading characteristics, are unreliable over the span of symbols the decoder uses in its decision process.

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