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    • 1. 发明授权
    • Apparatus and method of establishing and maintaining communication paths in a wireless telecommunications system
    • 在无线电信系统中建立和维护通信路径的装置和方法
    • US06175560B1
    • 2001-01-16
    • US08973581
    • 1998-03-16
    • Shashikant BhagaliaJoemanne Chi Cheung YeungIan L. CooperMartin LysejkoGuy A. CooperJonathan A. Thompson
    • Shashikant BhagaliaJoemanne Chi Cheung YeungIan L. CooperMartin LysejkoGuy A. CooperJonathan A. Thompson
    • H04B7216
    • H04J13/00H04B1/707H04B1/70735H04B1/7075H04B1/7077H04B1/70775H04B2201/70702H04L41/0226H04L41/0233H04L41/0654H04L41/0681H04L41/22H04W52/08H04W52/50H04W84/14
    • A wireless telecommunications systems (1) includes a central terminal (10) for transmitting and receiving radio frequency signals to and from a subscriber terminal (20). A downlink communication path is established from a transmitter (200) of the central terminal (10) to a receiver (202) of the subscriber terminal (20). A downlink signal (212) is transmitted from the transmitter (200) to the receiver (202) during setup and operation of the wireless telecommunications system (1). The receiver (202) of the subscriber terminal (20) compares a code and phase of a master code sequence that includes an orthogonal code in the downlink signal (212) to a code and phase of a slave code sequence of the receiver (202). The receiver (202) adjusts the phase of the slave code sequence until a match is obtained with the master code sequence. The receiver (202) monitors the downlink signal (212) to identify the frame alignment signal (232) and establishes the downlink communication path when two successive frame alignment signals (232) are identified. A channel identifier signal within the downlink signal is identified and used to identify the orthogonal code included in the master code sequence. The channel identifier signal is matched to a reference identifier code to verify that the correct downlink signal is being read.
    • 无线电信系统(1)包括用于向和从用户终端(20)发送和接收射频信号的中央终端(10)。 从中心终端(10)的发射机(200)到用户终端(20)的接收机(202)建立下行链路通信路径。 在无线电信系统(1)的建立和操作期间,从发射机(200)向接收机(202)发送下行链路信号(212)。 用户终端(20)的接收机(202)将包括下行链路信号(212)中的正交码的主码序列的码和相位与接收机(202)的从属码序列的码和相位进行比较, 。 接收器(202)调整从代码序列的相位,直到用主代码序列获得匹配。 接收器(202)监视下行链路信号(212)以识别帧对准信号(232),并且当识别出两个连续的帧对准信号(232)时建立下行链路通信路径。 识别下行链路信号内的信道标识符信号,并用于识别包含在主码序列中的正交码。 信道标识符信号与参考标识符码匹配,以验证正在读取正确的下行链路信号。
    • 4. 发明授权
    • Handling of telecommunications signals passed between elements of a telecommunications network
    • 处理电信网络元素之间通过的电信信号
    • US06181710B2
    • 2001-01-30
    • US09001023
    • 1997-12-30
    • Ian L. CooperJonathan A. ThompsonMartin LysejkoJoemanne Chi Cheung YeungAndrew M. WaldingGuy A. Cooper
    • Ian L. CooperJonathan A. ThompsonMartin LysejkoJoemanne Chi Cheung YeungAndrew M. WaldingGuy A. Cooper
    • H04J322
    • H04L29/06H04L69/08H04Q2213/13031H04Q2213/13034H04Q2213/1309H04Q2213/13098H04Q2213/13176H04Q2213/13204H04Q2213/13292H04Q2213/13294H04Q2213/13298
    • The present invention provides a system for handling telecommunications signals passed between a first and second element of a telecommunications network, the first element having an interface for transmitting and receiving signals in a first protocol, and the second element having an interface for transmitting and receiving signals in a second protocol. The system of the present invention comprises a first interface unit for receiving a first telecommunications signal transmitted in one of said first and second protocols between said first and second elements, the first interface unit being arranged to separate traffic bearing channels from non-traffic bearing channels within the first telecommunications signal. A traffic management element is then provided for performing a cross-connection function to map the traffic bearing channels to the appropriate format for the other of said protocols, whilst a protocol conversion element is provided for performing predetermined protocol conversion steps on the non-traffic bearing channels in order to regenerate those non-traffic bearing channels in the other of said protocols. Further, a second interface unit is provided for combining the channels as output by the traffic management element and the protocol conversion element in order to create a second telecommunications signal in the other of said protocols, the second interface unit being arranged to output the second telecommunications signal. Preferably, said first protocol has a concentrated format, and said second protocol has an unconcentrated format.
    • 本发明提供了一种用于处理在电信网络的第一和第二元件之间通过的电信信号的系统,第一元件具有用于在第一协议中发送和接收信号的接口,第二元件具有用于发送和接收信号的接口 在第二个协议。 本发明的系统包括:第一接口单元,用于接收在所述第一和第二元件之一中的所述第一和第二协议中的一个中发射的第一电信信号,所述第一接口单元被布置为将业务承载信道与非业务承载信道 在第一电讯信号之内。 然后提供交通管理元件,用于执行交叉连接功能,以将业务承载信道映射到所述协议中的另一个的适当格式,同时提供协议转换元件以在非流量承载上执行预定的协议转换步骤 信道,以便在所述协议中的另一个中重新生成那些非业务承载信道。 此外,提供第二接口单元,用于组合由业务管理元件和协议转换元件输出的信道,以便在所述协议中的另一个中创建第二电信信号,第二接口单元被布置成输出第二电信 信号。 优选地,所述第一协议具有集中格式,并且所述第二协议具有非集中格式。
    • 5. 发明授权
    • Apparatus and method of controlling transmitting power in a subscriber of a wireless telecommunications system
    • US06324208B1
    • 2001-11-27
    • US08973291
    • 1998-04-20
    • Shashikant BhagaliaJoemanne Chi Cheung YeungIan L. CooperMartin Lysejko
    • Shashikant BhagaliaJoemanne Chi Cheung YeungIan L. CooperMartin Lysejko
    • H04B1707
    • H04J13/00H04B1/7075H04W52/08H04W84/14
    • A wireless telecommunications systems (1) includes a central terminal (10) for transmitting and receiving radio frequency signals to and from a subscriber terminal (20). A downlink communication path is established from a transmitter (200) of the central terminal (10) to a receiver (202) of the subscriber terminal (20). A downlink signal (212) is transmitter from the transmitter (200) to the receiver (202) during setup and operation of the wireless telecommunications system (1). The receiver (202) of the subscriber terminal (20) compares a code and phase of a master code sequence in the downlink signal (212) to a code and phase of a slave code sequence of the receiver (202). The receiver (202) adjusts the phase of the slave code sequence until a match is obtained with the master code sequence. The downlink signal (212) includes an overhead channel (224) having a power control signal (236), a code synchronization signal (234), and a frame alignment signal (232). The power control signal (236) is capable of adjusting a transmitting power of a transmitter (204) in the subscriber terminal (20). The code synchronization signal (234) is capable of adjusting a phase of a transmitter (204) in the subscriber terminal (20). A receiver (206) in the central terminal (10) monitors an uplink signal (214) transmitted by the transmitter (204) in the subscriber terminal and provides changes to the code synchronization signal (234) such that the transmitter (204) is synchronized to the receiver (206). The receiver (202) monitors the downlink signal (212) to identify the frame alignment signal (232) and establishes the downlink communication path when two successive frame alignment signals (232) are identified. The wireless telecommunications system (1) operates in one of three operating modes. In an acquisition mode during establishment of the downlink communication path, the downlink signal (212) is transmitted at a high power level and a low transmit rate with the receiver (202) operating at the low transmit rate. In a standby mode after establishment of the downlink communication path, the downlink signal (212) is transmitted at a low power level and a low transmit rate with the receiver (202) operating at the low transmit rate. In a traffic mode upon a request for wireless communication transmission, the downlink signal (212) is transmitted at a high power level and a high transmit rate with the receiver (202) adjusting to operate at the high transmit rate. Upon completion of the wireless communication transmission, the wireless telecommunications system (1) returns to the standby mode and the receiver (202) adjusts to operate at the low transmit rate.
    • 6. 发明授权
    • Controlling interference in a cell of a wireless telecommunications system
    • 控制无线电信系统的小区中的干扰
    • US06195327B1
    • 2001-02-27
    • US08979900
    • 1997-11-26
    • Martin LysejkoJoemanne Chi Cheung YeungPaul F. Struhsaker
    • Martin LysejkoJoemanne Chi Cheung YeungPaul F. Struhsaker
    • H04J310
    • H04W72/082H04W72/0466
    • The present invention provides an interference controller and method for limiting in one cell the effect of interference generated by other cells of a wireless telecommunications system, each cell of the wireless telecommunications system having a central terminal and a plurality of subscriber terminals, communication between a central terminal and a subscriber terminal being arranged to occur over a wireless link, and a plurality of code division multiplexed channels being provided within a single frequency channel to enable data items pertaining to a plurality of wireless links to be transmitted simultaneously within different code division multiplexed channels of said single frequency channel. The interference controller comprises an analyser for comparing with predetermined criteria parameters within the cell indicative of whether the code division multiplexed channels are subject to interference from signals generated by said other cells; and a channel controller, responsive to the analyser, to selectively prevent code division multiplexed channels from being used in order to reduce the effect of the interference from said other cells. In preferred embodiments, the interference controller is provided within a central terminal of at least one cell of the wireless telecommunications system.
    • 本发明提供了一种干扰控制器和方法,用于在一个小区中限制由无线电信系统的其他小区产生的干扰的影响,无线电信系统的每个小区具有中心终端和多个用户终端,中央 终端和用户终端被布置为通过无线链路发生,并且在单个频率信道内提供多个码分复用信道,以使得与多个无线链路相关的数据项能够在不同的码分多路复用信道内同时发送 的所述单频道。 干扰控制器包括分析器,用于与小区内的预定准则参数进行比较,指示码分多路复用信道是否受到来自所述其他小区产生的信号的干扰; 以及响应于分析器的信道控制器,选择性地防止使用码分多路复用信道,以便减少来自所述其它小区的干扰的影响。 在优选实施例中,干扰控制器被提供在无线电信系统的至少一个小区的中心终端内。