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    • 47. 发明授权
    • Method and apparatus for transmitting and receiving data multiplexed onto multiple code channels, frequencies and base stations
    • 用于发送和接收复用到多个码信道,频率和基站上的数据的方法和装置
    • US06215777B1
    • 2001-04-10
    • US08929380
    • 1997-09-15
    • Tao ChenEdward G. Tiedemann, Jr.
    • Tao ChenEdward G. Tiedemann, Jr.
    • H04J100
    • H04J13/00H04J1/00H04J13/0077
    • In the present invention, high speed data is provided by transmitting data on multiple carrier frequencies, multiple code channels and/or from multiple base stations. In a first embodiment of the present invention, multiplexed code symbols are transmitted on a plurality of carrier frequencies from the same base station. In second embodiment, code symbols are transmitted on multiple carrier frequencies with at least one corner frequency providing the code symbols is a multiple code channels. In a third embodiment, a subset of the multiplexed code symbols are redundantly provided on a different carrier from at least one additional base station. In a fourth embodiment, multiplexed symbols as transmitted on different carriers from the same base station and are redundantly transmitted on another set of carriers from a different base station. In a fifth embodiment, code symbols are multiplexed onto carriers from a plurality of base stations for increased throughput. In a sixth embodiment, code symbols are transmitted on carriers from a first base station and redundantly provided on at least one additional base station on the same carriers as used by the first base station.
    • 在本发明中,通过在多个载波频率,多个码信道和/或多个基站发送数据来提供高速数据。 在本发明的第一实施例中,多路复用码符号在同一基站的多个载频上发送。 在第二实施例中,代码符号在多个载波频率上发送,其中至少一个转角频率提供码符号是多个码信道。 在第三实施例中,多路复用代码符号的子集被冗余地提供在与至少一个附加基站不同的载波上。 在第四实施例中,在来自相同基站的不同载波上发送的多路复用符号,并且在另一组载波上从不同的基站冗余地发送。 在第五实施例中,代码符号从多个基站复用到载波上以增加吞吐量。 在第六实施例中,代码符号在载波上从第一基站发送,并且冗余地提供在与第一基站所使用的相同载波上的至少一个附加基站上。
    • 49. 发明授权
    • Method and apparatus for performing mobile assisted hard handoff between
communication systems
    • 用于在通信系统之间执行移动辅助硬切换的方法和装置
    • US5999816A
    • 1999-12-07
    • US816746
    • 1997-02-18
    • Edward G. Tiedemann, Jr.Tao Chen
    • Edward G. Tiedemann, Jr.Tao Chen
    • H04W36/14H04Q7/00
    • H04W36/14H04W36/0066H04W36/245H04W24/00H04W28/18H04W36/0083H04W48/16H04W76/028
    • 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.
    • 公开了一种用于在CDMA通信系统内进行通信系统之间的系统间硬切换或频间硬切换的方法和装置。 本发明的目的是降低在系统间硬切换期间掉话的可能性。 在硬切换尝试不成功的情况下,移动台将利用本发明的通信系统用于协助未来切换尝试的执行的信息返回到原始系统。 或者,在没有进行切换尝试的情况下,移动台监视目的地系统,然后利用用于辅助随后的切换尝试的信息返回到原始系统。 从监视CDMA系统返回的信息包括搜索由基站提供给移动台的特定列表中的偏移处给出的一个或多个导频的结果或基于预定搜索算法的一组偏移量的结果。