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41.发明授权Apparatus and method for adding and removing a base station from a cellular communications system 失效用于从蜂窝通信系统添加和移除基站的设备和方法
公开(公告)号：US5584049A
公开(公告)日：1996-12-10
申请号：US521673
申请日：1995-08-31
摘要： An apparatus and method for adding and removing a target base station from a network of base stations, which includes base stations adjacent the target base station. The apparatus is comprised of two attenuators: a first for setting an artificial receive noise power level and a second for setting a transmit level. The transmit level determines the forward link coverage area of the base station. The artificial noise level sets the reverse link coverage area of the base station when a base station is added, initially the transmit power is low and the artificial receive noise power is high such that the forward and reverse kink coverage areas are collocated in close proximity to the base station. As the base station blossoms into full operation, the artificial receive noise power is decreased and the transmit level is increased such that the two coverage areas of the base station remain balanced as the coverage areas expand. When a base station is to be removed from a system, the same attenuators are used to wilt the two coverage areas in unison as the power level transmitted from the base station decreases.
摘要翻译： 一种用于从包括与所述目标基站相邻的基站的基站网络中添加和去除目标基站的装置和方法。 该装置包括两个衰减器：第一个用于设置人造接收噪声功率电平，另一个用于设置发射电平。 发送电平确定基站的前向链路覆盖区域。 当添加基站时，人造噪声电平设置基站的反向链路覆盖区域，最初发射功率低，并且人为接收噪声功率高，使得正向和反向扭结覆盖区域被并置在紧邻 基站。 随着基站开始全面运行，人造接收噪声功率降低，发射等级增加，使得基站的两个覆盖区域随着覆盖区域的扩大而保持平衡。 当要从系统中移除基站时，由于从基站传输的功率电平减小，所以使用相同的衰减器来一致地使两个覆盖区域下降。
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42.发明授权Method and apparatus for measurement directed hard handoff in a CDMA system 失效用于在CDMA系统中进行硬切换的测量的方法和装置
公开(公告)号：US5917811A
公开(公告)日：1999-06-29
申请号：US652726
申请日：1996-05-22
申请人： Lindsay A. Weaver, Jr. , Toni Lee Holcman , David B. Munsinger , Noam A. Ziv , Kenneth R. Baker
发明人： Lindsay A. Weaver, Jr. , Toni Lee Holcman , David B. Munsinger , Noam A. Ziv , Kenneth R. Baker
CPC分类号： H04W36/32 , H04W36/0083
摘要： In a communications network, a network user communicates using a remote unit with another user via at least one base station. The network is comprised of first and second mobile switching control stations respectively controlling communications through a first set of base stations including a first base station and through a second set of base stations including a second base station. To direct communications between the remote unit and the first and second base stations the first base station measures a round trip delay of an active communication signal between the first base station and the remote unit. The remote unit measures a first phase offset of a pilot signal received from a first candidate base station and reports it to the first mobile switching center via the first base station. The first mobile switching center calculates a candidate round trip delay between the remote unit and the first candidate base station based on the first phase offset and the round trip delay of the active communication signal. A active communication control unit accesses a measurement directed hard handoff table to determine a location of the remote unit based on the round trip delay corresponding to the first active communication signal and the candidate round trip delay.
摘要翻译： 在通信网络中，网络用户经由至少一个基站使用远程单元与另一用户进行通信。 网络由第一和第二移动交换控制站组成，分别通过包括第一基站的第一组基站以及通过包括第二基站的第二组基站控制通信。 为了引导远程单元与第一和第二基站之间的通信，第一基站测量第一基站和远程单元之间的活动通信信号的往返延迟。 远程单元测量从第一候选基站接收的导频信号的第一相位偏移，并经由第一基站将其报告给第一移动交换中心。 第一移动交换中心基于主动通信信号的第一相位偏移和往返行程延迟来计算远程单元和第一候选基站之间的候选往返延迟。 主动通信控制单元基于与第一主动通信信号和候选往返延迟相对应的往返延迟来访问测量定向硬切换表以确定远程单元的位置。
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43.发明授权Method and apparatus for integration of a wireless communication system with a cable T.V. system 失效用于将无线通信系统与电缆T.V.系统集成的方法和装置
公开(公告)号：US5867763A
公开(公告)日：1999-02-02
申请号：US600104
申请日：1996-02-08
CPC分类号： H04W88/085 , H04N7/17309
摘要： 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.
摘要翻译： 本发明是用于将个人通信系统与有线电视设备集成的方法和装置。 一组无线电天线设备（RAD）连接到电缆设备。 RAD提供从电缆设备接收的信号的频率转换和功率控制，用于无线传输到远程单元。 RAD还提供从远程单元接收的无线信号的功率控制和频率转换，以将RAD传输到电缆设备上。 除了标准基站和集中控制器的功能外，CATV基站还必须补偿电缆厂的增益变化。 下行功率控制由可以隐藏在CDMA信号内的RAD参考信号来调节，以获得最大的效率。 上游功率控制由上游链路上的每个RAD单独发送的上游增益参考信号来调节。 本发明的架构具有很大的灵活性。 每个RAD可以作为分布式天线或基站扇区的元件本身进行操作。 每个RAD作为分布式天线或扇区的功能可以从头端处理器进行远程编程。 因此，可以改变系统的容量密度以适应不断变化的交通密度。 系统部署时的灵活性也很重要。 当系统部署时，整个系统可以在基站仅馈送一个扇区，从而降低了实现系统的启动成本。 随着系统流量的增加，在头端可以简单地添加更多的资源来提供更多的容量。
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公开(公告)号：US5506865A
公开(公告)日：1996-04-09
申请号：US343800
申请日：1994-11-21
IPC分类号： H04L27/22 , G06F17/10 , G06F17/15 , G06F17/16 , H04B1/66 , H04L1/06 , H04B15/00 , H04K1/00 , H04L27/30
CPC分类号： G06F17/16 , G06F17/15 , H04B1/7115
摘要： An method and apparatus for computing a scalar projection of a vector onto another vector. The apparatus comprises a multiplying circuit and a summing circuit. The multiplying circuit is for multiplying a value representative of a first component of a first vector with a value representative of a first component of a second vector to provide a first intermediate value, and for multiplying a value representative of a second component of a first vector with a value representative of a second component of a second vector to provide a second intermediate value. The summing circuit sums the first and second intermediate values to provide a resultant value representative of the scalar projection of the first vector onto the second vector. The apparatus may further comprise a storing circuit and a selection circuit. The storing circuit is for storing the values representative of the first and second components of the first vector, and the values representative of the first and second components of the second vector. The selection circuit provides an ordered supply of these values to the multiplying circuit.
摘要翻译： 一种用于计算向量到另一向量的标量投影的方法和装置。 该装置包括乘法电路和求和电路。 乘法电路用于将表示第一矢量的第一分量的值与表示第二矢量的第一分量的值相乘以提供第一中间值，并且用于将表示第一矢量的第二分量的值相乘 具有代表第二向量的第二分量的值，以提供第二中间值。 求和电路对第一和第二中间值求和，以将表示第一向量的标量投影的结果值提供给第二向量。 该装置还可以包括存储电路和选择电路。 存储电路用于存储表示第一矢量的第一和第二分量的值，以及表示第二矢量的第一和第二分量的值。 选择电路为乘法电路提供这些值的有序电源。
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公开(公告)号：US5017926A
公开(公告)日：1991-05-21
申请号：US446979
申请日：1989-12-05
CPC分类号： G01S19/00 , G01S13/46 , G01S13/876 , G01S19/38 , G01S5/14 , G01S2013/466
摘要： A method and system for determining the position of an object using a fixed station and a plurality of earth orbit satellites whose positions are known. Separate periodic signals are transmitted from the fixed station via first and second satellites to the object whose postion is to be determined. The phase offset in periodic characteristics of the periodic signals as received from the first and second satellites is measured at the object. The phase offset corresponds to a relative time difference in propagation of the signals traveling two different paths to the object. The object transmits via the first satellite a return signal indicative of the measured relative time difference. This return signal is activated some time in the future according to the object local time, which is slaved to receipt of the periodic signal sent through the first satellite. This future time is the start of the particular time period as decided by the fixed station's schedule. At the fixed station, an instantaneous round trip delay, determined by the time offset of the current transmission clock time relative to the receive clock time of reception of the return signal, along with the measured relative time difference sent back on the return signal, is used to calculate the distances between the first and second satellites to the object. From these distances the position of the object is calculated.
摘要翻译： 一种用于使用固定站和位置已知的多个地球轨道卫星来确定物体的位置的方法和系统。 分离的周期信号从固定站经由第一和第二卫星发送到要确定位置的对象。 在物体处测量从第一和第二卫星接收的周期性信号的周期特性中的相位偏移。 相位偏移对应于传播到对象的两个不同路径的信号的传播的相对时间差。 物体经由第一卫星发送指示所测量的相对时间差的返回信号。 该返回信号在将来根据对象本地时间被激活一段时间，该对象本地时间被接收通过第一卫星发送的周期信号。 这个未来时间是由固定电台的时间表决定的特定时间段的开始。 在固定站，由当前传输时钟时间相对于接收返回信号的接收时钟时间的时间偏移确定的瞬时往返延迟以及在返回信号上发回的测量的相对时间差是 用于计算第一和第二卫星与物体之间的距离。 从这些距离计算物体的位置。
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公开(公告)号：US4905177A
公开(公告)日：1990-02-27
申请号：US145789
申请日：1988-01-19
CPC分类号： G06F1/0356 , G06F2101/04 , G06F2101/08
摘要： A method and apparatus for converting phase data into amplitude data. Input phase data is divided into upper and lower phase increments using an input splitter which can also fold in quadrant data. One or more storage elements, such as sine and cosine ROMs, are connected to the input splitter and generate an amplitude, which forms one of a plurality of series terms, and first and second derivatives of the amplitude in response to the upper phase increment. The first derivative and lower phase increment are multiplied together in a digital multiplier to produce a second series term. A third series term comprising a product of the amplitude and lower phase increment squared, is generated by a term generator connected to the splitter and to the storage element. The term generator can comprise elements such as a ROM addressable by the lower phase increment and the amplitude. The first, second and third series terms are subsequently added together by one or more digital adders connected to the multiplier, term generator, storage element and in series with each other to form an output amplitude. An output controller is used for transferring the output amplitude to other apparatus and for incorporating quadrant unfolding elements.
摘要翻译： 一种用于将相位数据转换成振幅数据的方法和装置。 使用输入分配器将输入相位数据分为上，下相位增量，也可以在象限数据中折叠。 一个或多个存储元件，例如正弦和余弦ROM，连接到输入分配器，并产生一个振幅，其形成多个串联项中的一个，以及响应于上相位增量的振幅的第一和第二导数。 第一导数和下相位增量在数字乘法器中相乘以产生第二串联项。 包括幅度和相位递减平方的乘积的第三系列项由连接到分路器和存储元件的术语发生器产生。 术语发生器可以包括诸如可通过较低相位增量和幅度寻址的ROM的元件。 第一，第二和第三系列术语随后通过连接到乘法器，术语发生器，存储元件并且彼此串联的一个或多个数字加法器相加在一起以形成输出幅度。 输出控制器用于将输出振幅转移到其他装置并用于结合象限展开元件。
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47.发明授权
公开(公告)号：US4901307A
公开(公告)日：1990-02-13
申请号：US921261
申请日：1986-10-17
CPC分类号： H04B7/2041 , H04B7/216 , H04B2201/70701
摘要： A multiple access, spread spectrum communication system and method for providing high capacity communications to, from, or between a plurality of system users, using code-division-spread-spectrum communication signals. The communication system uses means for providing marginal isolation between user communication signals. The marginal isolation is provided by generating simultaneous multiple steerable beams; using an omni-directional antenna with polarization enhancement; using power control devices to adjust the output power for user generated communication signals either in response to their input activity level, or in accordance with a minimum allowable power for maintaining a communication link. The communication system can also employ a means for transmitting a predetermined pilot chip sequence contiguous with the code-division-spread-spectrum communication signals.In further embodiments the communication system employs a plurality of user terminals linked to each other or to other services through one or more terrestrial or satellite repeaters. Multiple satellite repeaters are operable in a new communication mode to obtain further gains in signal isolation.
摘要翻译： 一种使用码分扩频通信信号向多个系统用户提供高容量通信的多址，扩频通信系统和方法。 通信系统使用用于在用户通信信号之间提供边缘隔离的装置。 边缘隔离通过同时产生多个可操纵梁来提供; 使用具有极化增强的全向天线; 使用功率控制装置来响应于其输入活动水平或根据用于维持通信链路的最小允许功率来调整用户生成的通信信号的输出功率。 通信系统还可以采用用于发送与码分扩展频谱通信信号相邻的预定导频码片序列的装置。 在另外的实施例中，通信系统采用通过一个或多个地面或卫星中继器彼此链接或与其他服务相连的多个用户终端。 多个卫星中继器可以在新的通信模式下操作，以获得信号隔离的进一步增益。
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公开(公告)号：US06515961B1
公开(公告)日：2003-02-04
申请号：US09265203
申请日：1999-03-10
IPC分类号： H04B7216
CPC分类号： H04B1/707 , H04B2201/70706
摘要： The invention is a CDMA decresting technology that reduces or eliminates peaks in the CDMA signal. The CDMA technology generates a correction signal in response to peaks in the CDMA signal that exceed a value. The value typically corresponds to the maximum power level of a power amplifier. The CDMA technology combines the correction signal with the CDMA signal to generate a decrested CDMA signal with reduced peaks. In some examples of the invention, the CDMA technology processes polar coordinate representations of the quadrature components of the CDMA signal to generate the correction signal. Using the invention, the power amplifier in a CDMA base station can operate at increased power levels without exceeding out-of-band signal power limitations. As a result, the base station operates more efficiently and with a greater range or capacity.
摘要翻译： 本发明是减少或消除CDMA信号中的峰值的CDMA衰减技术。 CDMA技术响应于超过一个值的CDMA信号中的峰值产生校正信号。 该值通常对应于功率放大器的最大功率电平。 CDMA技术将校正信号与CDMA信号组合，以产生具有降低的峰值的衰减的CDMA信号。 在本发明的一些示例中，CDMA技术处理CDMA信号的正交分量的极坐标表示以产生校正信号。 使用本发明，CDMA基站中的功率放大器可以在增加的功率电平下工作，而不超出带外信号功率限制。 因此，基站更有效地运行并具有更大的范围或容量。
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49.发明授权System, method and computer program product for controlling a transmit signal using an expected power level 失效用于使用预期功率电平来控制发射信号的系统，方法和计算机程序产品公开(公告)号：US06286994B1
公开(公告)日：2001-09-11
申请号：US09069885
申请日：1998-04-29
IPC分类号： H04L2704
CPC分类号： H04W52/225 , H04W52/08 , H04W52/10
摘要： A system, method and computer program product that uses an expected output power level to compensate for slowly changing unintentional power fluctuations in a signal transmission system such that the actual transmitted power matches a calculated desired transmit power. Digital expected power data is sampled and filtered to generate an expected output power level. Actual output data is sampled and filtered to generate an actual output power level. A comparator periodically compares the expected output power level to the actual output power level. Preferably, the comparator first removes a correction value from the actual output power level that was added to the transmit signal to correct for unintentional power fluctuations. The resultant ratio or difference is sent to a correction module which generates a correction value therefrom. The correction value is converted to a dB quantity and added to existing correction values.
摘要翻译： 一种系统，方法和计算机程序产品，其使用期望的输出功率电平来补偿信号传输系统中缓慢变化的无意的功率波动，使得实际发射功率与计算出的所需发射功率匹配。 数字预期功率数据被采样和滤波以产生预期的输出功率电平。 实际输出数据被采样和滤波以产生实际的输出功率电平。 比较器周期性地将预期输出功率电平与实际输出功率电平进行比较。 优选地，比较器首先从添加到发射信号的实际输出功率电平中去除校正值，以校正无意的功率波动。 所得到的比率或差被发送到从其产生校正值的校正模块。 校正值被转换为dB数量并加到现有校正值。
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公开(公告)号：US06108364A
公开(公告)日：2000-08-22
申请号：US522469
申请日：1995-08-31
IPC分类号： H04L5/16 , H04B7/005 , H04B7/15 , H04B7/26 , H04J3/08 , H04W16/26 , H04W52/40 , H04W52/46 , H04B15/00
CPC分类号： H04W52/46 , H04B7/15535 , H04B7/2606 , H04B7/2618 , H04W16/26 , H04W52/40
摘要： A method and apparatus for time division duplex (TDD) repeating a spread spectrum signal, where spread spectrum signal is comprised of a series of code symbol modulated with a pseudonoise (PN) sequence. The TDD repeater receives intermittently the spread spectrum signal at a location remote from a source supplying the spread spectrum signal. The TDD repeater amplifies and delays the received spread spectrum signal by a predetermined amount. The TDD repeater transmits intermittently the delayed amplified received spread spectrum signal such that the TDD is not receiving the spread spectrum signal when it is transmitting the signal energy.
摘要翻译： 一种用于重复扩频信号的时分双工（TDD）的方法和装置，其中扩频信号由用伪噪声（PN）序列调制的一系列码元组成。 TDD中继器在远离提供扩频信号的源的位置处间歇地接收扩频信号。 TDD中继器将接收的扩频信号放大并延迟预定量。 TDD中继器间歇地发送延迟的放大的接收扩频信号，使得TDD在发送信号能量时没有接收扩频信号。
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