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81.发明授权Method and apparatus for forward link gain control in a power controlled repeater 有权功率控制中继器中前向链路增益控制的方法和装置公开(公告)号：US08032172B2
公开(公告)日：2011-10-04
申请号：US12062351
申请日：2008-04-03
CPC分类号： H04W52/24 , H04B7/0604 , H04B7/15507 , H04B7/15535 , H04L1/0071 , H04L1/06 , H04L1/08 , H04L5/0023 , H04L5/0042 , H04L5/0044 , H04L5/0083 , H04L27/2602 , H04W52/143 , H04W52/225 , H04W52/241 , H04W52/242 , H04W52/245 , H04W52/46
摘要： A power controlled repeater is disclosed for use in a wireless communication system to control the forward link gain. The power controlled repeater includes a forward link for communications from a base station to a mobile station. In addition, the power controlled repeater includes a reverse link for communications from the mobile station to the base station. An embedded subscriber unit is used at the power controlled repeater and is inserted into the forward link. A microprocessor is in electronic communications with the subscriber unit and implements a method for controlling the forward link gain. The method for controlling the forward link gain includes using the embedded subscriber unit in the power controlled repeater to control the forward link gain.
摘要翻译： 公开了功率控制中继器用于无线通信系统中以控制前向链路增益。 功率控制中继器包括用于从基站到移动站的通信的前向链路。 此外，功率控制中继器包括用于从移动台到基站的通信的反向链路。 在功率控制中继器上使用嵌入式用户单元，并插入到前向链路中。 微处理器与用户单元进行电子通信，并实现用于控制前向链路增益的方法。 用于控制前向链路增益的方法包括使用功率控制中继器中的嵌入式用户单元来控制前向链路增益。
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82.发明申请METHOD AND APPARATUS FOR TIME-ALIGNING TRANSMISSIONS FROM MULTIPLE BASE STATIONS IN A CDMA COMMUNICATION SYSTEM 有权CDMA通信系统中多个基站的时间调度传输方法与装置公开(公告)号：US20080310321A1
公开(公告)日：2008-12-18
申请号：US12196489
申请日：2008-08-22
CPC分类号： H04W56/002 , H04B7/2668 , H04B2201/70702 , H04W56/001 , H04W56/0015 , H04W56/0045 , H04W92/20
摘要： Schemes to time-align transmissions from multiple base stations to a terminal. To achieve time-alignment, differences between the arrival times of transmissions from the base stations, as observed at the terminal, are determined and provided to the system and used to adjust the timing at the base stations such that terminal-specific radio frames arrive at the terminal within a particular time window. In one scheme, a time difference between two base stations is partitioned into a frame-level time difference and a chip-level time difference. Whenever requested to perform and report time difference measurements, the terminal measures the chip-level timing for each candidate base station relative to a reference base station. Additionally, the terminal also measures the frame-level timing and includes this information in the time difference measurement only if required. Otherwise, the terminal sets the frame-level part to a predetermined value (e.g., zero).
摘要翻译： 将来自多个基站的传输时间对齐到终端的方案。 为了实现时间对准，确定在终端观察到的来自基站的传输的到达时间之间的差异，并将其提供给系统，并用于调整基站处的定时，使得终端专用无线帧到达 终端在特定的时间窗口内。 在一个方案中，两个基站之间的时差被划分为帧级时间差和码片级时间差。 无论何时请求执行和报告时差测量，终端测量每个候选基站相对于参考基站的芯片级定时。 此外，终端还测量帧级定时，并且仅在需要时在时差测量中包括该信息。 否则，终端将帧级部分设置为预定值（例如，零）。
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公开(公告)号：US06760366B1
公开(公告)日：2004-07-06
申请号：US09450265
申请日：1999-11-29
IPC分类号： H04B169
CPC分类号： H04B1/7075 , H04B1/7093 , H04B2201/70701
摘要： The present invention includes a cellular pilot signal detector or searcher for use in a cellular mobile communications unit. The signal detector uses a matched filter to detect a pilot signal transmitted from a cellular base station. The matched filter includes a plurality of taps and a plurality of delays located between adjacent taps. The signal components of a received digital signal are held on the taps of the matched filter by the delays. The matched filter compares the signal components of the received signal to an expected or searched for digital pattern. The matched filter puts out a relatively large signal if the received digital signal matches the expected digital pattern. The matched filter can also be used in parallel with a correlator.
摘要翻译： 本发明包括在蜂窝移动通信单元中使用的蜂窝导频信号检测器或搜索器。 信号检测器使用匹配滤波器来检测从蜂窝基站发送的导频信号。 匹配滤波器包括位于相邻水龙头之间的多个抽头和多个延迟。 接收到的数字信号的信号分量由延迟保持在匹配滤波器的抽头上。 匹配滤波器将接收信号的信号分量与预期或搜索的数字模式进行比较。 如果接收到的数字信号与预期的数字模式匹配，则匹配滤波器输出相对较大的信号。 匹配滤波器也可以与相关器并联使用。
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公开(公告)号：US06741661B2
公开(公告)日：2004-05-25
申请号：US09863244
申请日：2001-05-22
IPC分类号： H04L2549
CPC分类号： H04B1/707 , H04B2201/70706 , H04L27/2624
摘要： A method and system that reduces the peak-to-average power ratio of a reverse link signal is described. A baseband structure implements a peak reduction technique using peak windowing. A non-rectangular window is used to distort the signal. One embodiment of the window is an inverted-raised cosine with the peak reduction a function of the relative difference in the squared-magnitude of the envelope relative to that of the desired peak-to-average power ratio. Multiple passes through the peak-reduction function may be performed until a desired target peak-to-average power ratio is achieved.
摘要翻译： 描述了降低反向链路信号的峰均功率比的方法和系统。 基带结构使用峰值窗口实现峰值缩减技术。 使用非矩形窗口来扭曲信号。 窗口的一个实施例是具有峰值减小的反升余弦，相对于期望的峰均功率比的平方幅度的相对差的函数。 可以执行多次通过峰值降低功能，直到达到期望的目标峰值与平均功率比。
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公开(公告)号：US5930692A
公开(公告)日：1999-07-27
申请号：US855724
申请日：1997-05-09
IPC分类号： H04B1/06 , H03G1/00 , H03G3/30 , H04B20060101 , H04B1/10 , H04B1/16 , H04B1/18 , H04B1/40 , H04B1/7075 , H04B1/7097 , H04B3/06 , H04B7/005 , H04B7/26 , H04B15/00
CPC分类号： H04W52/52 , H03F3/72 , H03G1/0088 , H03G3/3052 , H03G3/3068 , H04B1/109 , H04B1/70755 , H04B1/7097 , H03F2203/7239 , Y02B60/50
摘要： The method and apparatus of the present invention improve the immunity to interference of a radio receiver. The power level of a received signal is detected. If the power level meets or exceeds a predetermined power threshold, the low noise amplifier is by-passed, thus increasing the intercept point of the receiver components.Alternative embodiments include the use of an RF power detector to control the front-end gain as a function of jammer power. In lieu of a switchable RF gain block, several methods of continuous gain control are proposed. Continuous gain control allows the interference suppression and sensitivity of the receiver to be adjusted at lower signal levels than the switchable gain block.
摘要翻译： 本发明的方法和装置提高了无线电接收机的抗干扰能力。 检测到接收信号的功率电平。 如果功率电平满足或超过预定功率阈值，则低噪声放大器被旁路，从而增加了接收器组件的截取点。 替代实施例包括使用RF功率检测器来控制作为干扰功率的函数的前端增益。 代替可切换的RF增益块，提出了几种连续增益控制方法。 连续增益控制允许在比可切换增益块更低的信号电平下调整接收机的干扰抑制和灵敏度。
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86.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：US5758266A
公开(公告)日：1998-05-26
申请号：US316188
申请日：1994-09-30
IPC分类号： H04B1/40 , H04B1/38 , H04B7/005 , H04B7/12 , H04B7/208 , H04B7/26 , H04J1/04 , H04L1/04 , H04L5/06 , H04Q11/02 , H04W36/14 , H04W36/18
摘要： 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.
摘要翻译： 本发明的双频带码分多址无线电在传输或接收的同时在多个频率上工作。 发射路径通过分离发射中频（IF）路径（103）并使用两个频率合成器（140和145）将IF混合到两个不同的发射频率来操作。 接收路径（104）具有与由合成器（140和145）生成的频率混合的两个RF信道（116和117）并且相加到一个IF条带中。 因此，本发明的无线电装置可以同时在与两个基站通信的同时执行软切换。 如果需要同时与两个以上的基站通信，可以添加其他混合路径和合成器。
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公开(公告)号：US5732341A
公开(公告)日：1998-03-24
申请号：US522467
申请日：1995-08-31
IPC分类号： H04B1/06 , H03G1/00 , H03G3/30 , H04B20060101 , H04B1/10 , H04B1/16 , H04B1/18 , H04B1/40 , H04B1/7075 , H04B1/7097 , H04B3/06 , H04B7/005 , H04B7/26 , H04B15/00 , H04G3/20
CPC分类号： H04W52/52 , H03F3/72 , H03G1/0088 , H03G3/3052 , H03G3/3068 , H04B1/109 , H04B1/70755 , H04B1/7097 , H03F2203/7239 , Y02B60/50
摘要： The process of the present invention adjusts the input gain by a predetermined amount. The receiver processing measures the gain change in the IF sisal power. If the change is less than the predetermined amount, the CDMA signal and jammers are below the noise floor and, therefore, the gain is increased. If the IF signal power change is equal to the predetermined amount, the CDMA signal is above the noise floor and the interference is minimal. Therefore, in this case, gain adjustment is not necessary, but increasing gain will improve sensitivity. If the IF signal power change is greater than the predetermined amount, the interference is evident and the gain is reduced to reduce the intermodulation products. This process is used until the receiver is operating at the best compromise between interference and noise figure.
摘要翻译： 本发明的方法将输入增益调整预定量。 接收机处理测量IF信号功率的增益变化。 如果改变小于预定量，则CDMA信号和干扰器低于本底噪声，因此增益增加。 如果IF信号功率变化等于预定量，则CDMA信号高于本底噪声并且干扰最小。 因此，在这种情况下，增益调整是不必要的，但增加的增益将提高灵敏度。 如果IF信号功率变化大于预定量，则干扰是显而易见的并且减小增益以减少互调产物。 使用这个过程直到接收机以干扰和噪声系数之间的最佳折中操作。
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公开(公告)号：US5722063A
公开(公告)日：1998-02-24
申请号：US357951
申请日：1994-12-16
IPC分类号： H04B1/06 , H03G1/00 , H03G3/30 , H04B20060101 , H04B1/10 , H04B1/16 , H04B1/18 , H04B1/40 , H04B1/7075 , H04B1/7097 , H04B3/06 , H04B7/005 , H04B7/26 , H04B15/00
CPC分类号： H04W52/52 , H03F3/72 , H03G1/0088 , H03G3/3052 , H03G3/3068 , H04B1/109 , H04B1/70755 , H04B1/7097 , H03F2203/7239 , Y02B60/50
摘要： The method and apparatus of the present invention improve the immunity to interference of a radio receiver. The power level of a received signal is detected. If the power level meets or exceeds a predetermined power threshold, the low noise amplifier is by-passed, thus increasing the intercept point of the receiver components. Alternative embodiments include the use of an RF power detector to control the front-end gain as a function of jammer power. In lieu of a switchable RF gain block, several methods of continuous gain control are proposed. Continuous gain control allows the interference suppression and sensitivity of the receiver to be adjusted at lower signal levels than the switchable gain block.
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90.发明授权Reverse link, closed loop power control in a code division multiple access system 失效反向链路，闭环功率控制在码分多址系统中
公开(公告)号：US5603096A
公开(公告)日：1997-02-11
申请号：US272484
申请日：1994-07-11
IPC分类号： H04B7/005 , H04B7/26 , H04W24/00 , H04W28/22 , H04W52/00 , H04W52/08 , H04W52/12 , H04W52/26 , H04W74/00 , H04B7/00
摘要： The process of the present invention enables a mobile radiotelephone to operate at a 100% duty cycle while providing closed loop power control. The base station measures the signal to noise ratio of the signal from the mobile and compares that SNR with the SNR threshold values the base station has for each data rate the mobile is capable of transmitting. The base station then generates power control commands to instruct the mobile to change its power depending on the outcome of the comparisons.
摘要翻译： 本发明的过程使移动无线电话机能够以100％的占空比工作，同时提供闭环功率控制。 基站测量来自移动台的信号的信噪比，并将该SNR与移动台能够发送的每个数据速率的基站具有的SNR阈值进行比较。 基站然后产生功率控制命令以指示移动台根据比较的结果来改变其功率。
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