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    Method and apparatus for performing mobile assisted hard handoff between communication systems
    46.
    发明授权
    Method and apparatus for performing mobile assisted hard handoff between communication systems 失效
    的方法和装置的通信系统之间的移动辅助硬通

    公开(公告)号：EP0956679B1

    公开(公告)日：2007-04-11

    申请号：EP97954204.0

    申请日：1997-12-19

    申请人： QUALCOMM INCORPORATED

    发明人： TIEDEMANN, Edward, G., Jr. ,  CHEN, Tao ,  WHEATLEY, Charles, E., III

    IPC分类号： H04L12/00

    CPC分类号： H04W36/0094 ,  H04W36/0061 ,  H04W36/0066 ,  H04W36/14 ,  H04W36/30 ,  Y02D70/00

    摘要： A method and apparatus for performing inter-system hard handoff between communication systems or inter-frequency hard handoff within a CDMA communication system is disclosed. The purpose of this invention is to reduce the probability of dropped calls during inter-system hard handoff. In the event that a hard handoff attempt is unsuccessful, the mobile station will return to the original system with information which the communication system of the present invention uses to assist in the performance of future handoff attempts. Alternatively, with no handoff attempt made, the mobile station monitors the destination system then returns to the original system with information used to assist in subsequent handoff attempts. The information returned from monitoring a CDMA system consists of results of a search for one or more pilots given at offsets in a specific list provided to the mobile station by the base station or a set of offsets based upon a predetermined search algorithm.

    摘要翻译： 一种用于CDMA通信系统内进行通信的系统或频率间硬越区切换之间的系统间硬越区切换的方法和装置游离缺失盘。 本发明的目的是为了减少系统间硬切换期间掉话的概率。 在事件做了硬切换尝试不成功，移动台将返回到与信息的原始系统，本发明的通信系统使用，以帮助未来的切换尝试的性能。 可替代地，与由没有切换尝试时，移动站监视目标系统然后返回到与信息的原始系统用于辅助越区切换的后续尝试。 的信息从监视在由基站或一组基于预定搜索算法的偏移提供给移动台的特定列表在偏移给定的一个或更多个导频的搜索的结果的CDMA系统besteht返回。

    ADAPTIVE INTERFERENCE FILTERING
    47.
    发明公开
    ADAPTIVE INTERFERENCE FILTERING 审中-公开
    自适应干扰器

    公开(公告)号：EP1730845A1

    公开(公告)日：2006-12-13

    申请号：EP05724661.3

    申请日：2005-03-02

    申请人： Qualcomm, Incorporated

    发明人： WALLACE, Raymond, C. ,  WHEATLEY, Charles, E., III ,  TONCICH, Stanley, Slavko

    IPC分类号： H04B1/52

    CPC分类号： H04B1/1036 ,  H04B1/525 ,  H04B1/7097

    摘要： Systems and techniques for adaptive interference filtering in a communications device are disclosed. The communications device may include a transmitter, a receiver, a duplexer coupled to the transmitter and the receiver, and an adaptive filter disposed between the duplexer and the receiver. A processor may be configured to monitor cross modulation in the receiver between transmitter leakage through the duplexer and a jammer, and adapt the filter to vary its transmit signal rejection as a function of the cross modulation.

    METHODS AND APPARATUS FOR CONTROLLING TRANSMISSION POWER IN A CDMA CELLULAR MOBILE TELEPHONE SYSTEM
    48.
    发明授权
    METHODS AND APPARATUS FOR CONTROLLING TRANSMISSION POWER IN A CDMA CELLULAR MOBILE TELEPHONE SYSTEM 失效
    的方法和设备，用于控制发送功率随单元格码分多址移动电话系统

    公开(公告)号：EP0584241B1

    公开(公告)日：2005-09-28

    申请号：EP92912546.6

    申请日：1992-05-17

    申请人： QUALCOMM INCORPORATED

    发明人： GILHOUSEN, Klein, S. ,  PADOVANI, Roberto ,  WHEATLEY, Charles, E., III ,  WEAVER, Lindsay, A., Jr. ,  BLAKENEY, Robert, D., II

    IPC分类号： H04L27/30 ,  H04B7/005

    CPC分类号： H04W52/40 ,  H04B7/0671 ,  H04B7/2628 ,  H04W52/0245 ,  H04W52/06 ,  H04W52/08 ,  H04W52/10 ,  Y02D70/21 ,  Y02D70/444 ,  Y02D70/449

    摘要： 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.