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    • 1. 发明授权
    • Wireless system plan using in band-translators with diversity backhaul
to enable efficient depolyment of high capacity base transceiver systems
    • 无线系统计划使用具有分集回程的带宽翻译器,以实现高容量基站收发器系统的高效解散
    • US6088592A
    • 2000-07-11
    • US622550
    • 1996-03-25
    • John R. DonerRonald R. CarneyMichael A. Komara
    • John R. DonerRonald R. CarneyMichael A. Komara
    • H04W16/02H04W16/12H04W16/24H04W16/26H04Q7/36
    • H04W16/26H04B7/2606H04W16/12
    • A wireless system architecture whereby high efficiency broadband transceiver systems can be deployed at an initial build out stage of the system in a cost-efficient manner. A home base station location is identified within each cluster of cells and rather than deploy a complete suite of base station equipment at each of the cells in the cluster, inexpensive translator units are located in the outlying cells serviced by the home base station in which low traffic density is expected. The translators are connected to directional antennas arranged to point back to the home base station site. The translators are deployed in such a way which meshes with the eventually intended frequency reuse for the entire cluster of cells. The translator to base station radio links operate in-band that is, within the frequencies assigned to the service provider. The available frequency bands are divided into at least two sub-bands, with frequency translations ocurring entirely within a given sub-band.
    • 一种无线系统架构,其中可以以成本有效的方式在系统的初始建立阶段部署高效率宽带收发器系统。 在每个小区集群内识别家庭基站位置,而不是在集群中的每个小区部署一套完整的基站设备,廉价的转换器单元位于由家庭基站服务的外围小区中,其中低 预计交通密集。 翻译器连接到布置成指向家庭基站站点的定向天线。 翻译器的部署方式与整个单元格集群的最终预期频率重用相结合。 转换器到基站无线电链路在分配给服务提供商的频率内在带内工作。 可用的频带被划分成至少两个子带,其频率转换完全在给定子带内。
    • 2. 发明授权
    • Method and apparatus for dynamically optimizing the forward-link
transmit power of a broadband multi-carrier radio signal
    • 用于动态优化宽带多载波无线电信号的前向链路发射功率的方法和装置
    • US5926747A
    • 1999-07-20
    • US708690
    • 1996-09-05
    • Michael A. KomaraJohn R. Doner
    • Michael A. KomaraJohn R. Doner
    • H04B7/005H04B1/00H04B7/00H04B7/216
    • H04W52/143H04W52/146
    • In a cellular-communications base station (10), an attenuation circuit 22 sets different power levels for different ones of the forward communications channels by which the base station transmits to the mobile units (12) that it services. From the reverse-channel transmit power that a reverse-channel-power circuit 52 derives from the associated reverse-channel power that the base station receives, a forward power circuit (58) infers the level of forward-channel transmit power that will result in the mobile unit's receipt of the requisite forward-channel power. In this way, the base station (10) avoids the need to transmit full power into all of the forward channels even if it is operating in accordance with a protocol that does not explicitly inform it of the forward-channel power that the mobile unit (12) is receiving.
    • 在蜂窝通信基站(10)中,衰减电路22为基站向其服务的移动单元(12)发送的不同的前向通信信道设置不同的功率电平。 从反向信道功率电路52从基站接收到的相关联的反向信道功率中导出的反向信道发射功率,正向功率电路(58)推断正向信道发射功率的电平,这将导致 移动单元收到所需的前向通道功率。 以这种方式,基站(10)避免了将全部功率发送到所有前向信道的需要,即使其根据未明确地向其通知正向信道功率的协议进行操作,移动单元 12)正在接收。
    • 3. 发明授权
    • Multi-carrier high power amplifier using digital pre-distortion
    • 多载波大功率放大器采用数字预失真
    • US5937011A
    • 1999-08-10
    • US622060
    • 1996-03-26
    • Ronald R. CarneyMichael A. Komara
    • Ronald R. CarneyMichael A. Komara
    • H03F1/32H04L5/06H04L25/49
    • H04L5/06H03F1/3247
    • A distortion correction technique for use with a high power amplifier (HPA) in a multi-carrier radio signaling system such as a cellular base station. Distortion correction is implemented by making use of a broadband digital composite signal input to the high power amplifier as a reference signal in a form of intermediate frequency (IF) distortion correction circuit. A multichannel synthesizer provides the broadband composite signal to a broadband digital radio which in turn provides an input to the (HPA). A portion of the output signal from the HPA is fed back through a radio frequency (RF) and intermediate frequency (IF) down-conversion stage that uses the same IF and RF local oscillators that were used to generate the input signal to the HPA. This feedback signal is fed to a predistortion processor together with a version of the composite digital signal. The predistortion processor may perform a first crude amplitude correction procedure by finding a difference between the HPA feedback signal and the composite signal, to provide an offset to be loaded into a look-up table which is disposed between the broadband digital synthesizer and the broadband digital radio,. Subsequent precise correction and distortion correction procedures are performed using the offset value.
    • 一种与诸如蜂窝基站的多载波无线电信令系统中的高功率放大器(HPA)一起使用的失真校正技术。 通过利用输入到高功率放大器的宽带数字复合信号作为中频(IF)失真校正电路形式的参考信号来实现失真校正。 多通道合成器将宽带复合信号提供给宽带数字无线电,这又提供了对(HPA)的输入。 来自HPA的输出信号的一部分通过射频(RF)和中频(IF)下变频级反馈,其中使用相同的IF和RF本地振荡器来产生到HPA的输入信号。 该反馈信号与复合数字信号的版本一起馈送到预失真处理器。 预失真处理器可以通过发现HPA反馈信号和复合信号之间的差异来执行第一粗幅度校正过程,以提供要被加载到放置在宽带数字合成器和宽带数字合成器之间的查找表中的偏移 无线电,。 使用偏移值执行随后的精确校正和失真校正程序。
    • 4. 发明授权
    • Backhaul power control system in a wireless repeater
    • 无线中继器回程功率控制系统
    • US06687509B2
    • 2004-02-03
    • US09726874
    • 2000-11-30
    • Thomas R. SchmutzMichael A. Komara
    • Thomas R. SchmutzMichael A. Komara
    • H04B700
    • H04W52/24H04B7/15535H04B7/2606H04W52/46H04W52/60
    • A method and apparatus for dynamically controlling signal power levels in a bi-directional backhaul communication link between a base station and a repeater station is provided. The signal power level of a signal transmitted between a base station and a repeater station is measured at the receiver of the signal. Once the received signal power level has been measured, the power level data based on the received signal power level is automatically transmitted from the receiving station back to the source of the measured signal over the backhaul link. Upon receipt at the source, the power level data is extracted and analyzed to determine if the source needs to alter its transmitted power. Once the power level data is analyzed to determine if a change in the transmitted power is required, the source can automatically respond by increasing, decreasing, or maintaining the transmitted power.
    • 提供一种用于在基站和中继站之间的双向回程通信链路中动态控制信号功率电平的方法和装置。 在信号的接收器处测量在基站和中继站之间传输的信号的信号功率电平。 一旦已经测量了接收到的信号功率电平,基于接收信号功率电平的功率电平数据将通过回程链路自动从接收站发送回测量信号的源。 在源头接收时,提取并分析功率电平数据,以确定源是否需要改变其发射功率。 一旦功率电平数据被分析以确定是否需要发射功率的变化,则源可以通过增加,减少或维持发射功率来自动响应。
    • 5. 发明授权
    • METHOD AND APPARATUS TO REDUCE SPURIOUS AND INTERMODULATION PRODUCTS IN WIRELESS BROADBAND MULTI-CARRIER DIGITAL TRANSCEIVER EQUIPMENT THROUGH STATIC NON-LINEARITY CORRECTION OF DIGITAL CONVERSION COMPONENTS
    • 通过数字转换组件的静态非线性校正,在无线宽带多载波数字收发器设备中减少无线和互连产品的方法和设备
    • US06463093B1
    • 2002-10-08
    • US09363845
    • 1999-07-30
    • Michael A. KomaraJohn R. Noll
    • Michael A. KomaraJohn R. Noll
    • H03M110
    • H03M1/1042H03M1/12H03M1/66H04L27/364
    • Apparatus and method to perform the real-time correction of differential non-linearities in a broadband wireless transceiver system using a digital look-up table. Initially, the values for the digital look-up table are determined prior to full operational use of the broadband transceiver system. The one set of values represents inverse response of the transfer function of the D/A converter. The other sets of values represents the inverse response of the transfer function for each A/D converter. The inverse response values for the D/A and A/D converters are stored in a non-volatile memory. During initialization of the broadband transceiver system, the values of the inverse response of the transfer function for the D/A converter are transferred from the non-volatile memory to a high speed memory. The values of the inverse response of the transfer function for each A/D converter is also transferred to another set of high speed memory. For a transmitting signal, the signal is used as an address into the high speed memory to output a corrected value for the D/A converter. For a received signal, each output from the A/D converters is used as an address into each high speed memory. The output from each high speed memory is a corrected value for the respective A/D converter.
    • 使用数字查找表在宽带无线收发机系统中执行差分非线性的实时校正的装置和方法。 最初,在宽带收发器系统的完全操作使用之前确定数字查找表的值。 一组值表示D / A转换器的传递函数的反向响应。 其他值表示每个A / D转换器的传递函数的反向响应。 D / A和A / D转换器的反向响应值存储在非易失性存储器中。 在宽带收发器系统的初始化期间,D / A转换器的传递函数的反向响应的值从非易失性存储器传送到高速存储器。 每个A / D转换器的传递函数的反向响应的值也被传送到另一组高速存储器。 对于发送信号,该信号用作高速存储器中的地址,以输出用于D / A转换器的校正值。 对于接收信号,来自A / D转换器的每个输出用作每个高速存储器中的地址。 每个高速存储器的输出是相应A / D转换器的校正值。
    • 6. 发明授权
    • Method and apparatus employing delay elements in multiple diversity
paths of a wireless system repeater translator to allow for selective
diversity and automatic level control in a time-division multiple
access system
    • 在无线系统中继器转换器的多个分集路径中采用延迟元件的方法和装置,以允许时分多址系统中的选择性分集和自动电平控制
    • US06088570A
    • 2000-07-11
    • US198485
    • 1998-11-24
    • Michael A. KomaraThomas R. SchmutzJeffrey W. SmithStephen J. Foley
    • Michael A. KomaraThomas R. SchmutzJeffrey W. SmithStephen J. Foley
    • H04B7/005H04B7/08H04B7/15
    • H04B7/2606H04B7/0802H04B7/15542H04W52/42H04B7/0828
    • In a conventional Time Division Multiple Access (TDMA) wireless system, the specified distance between a mobile unit and the base transceiver system (BTS) cannot exceed predetermined distances because of time slot synchronization constraints. Furthermore, varying distances between mobile units and the BTS, as well as Rayleigh fading, caused by destructive interference effects between direct and reflected signals, create extreme signal strength variations in the initial uplink signal from the mobile stations. The use of spatially-diverse antennas for receiving uplink signals provides diversity gain and mitigates deep fades. Furthermore, selecting the stronger of the spatially-diverse uplink signals mitigates deep fades and reduces frequency usage in the backhaul frequency band. In this approach to extending TDMA system coverage, in-band translator components are located in the center of remote cells which would normally contain a base transceiver system (BTS). The in-band translators include delay elements to implement slot-by-slot selective spatial diversity and automatic level control in a predictive feedforward fashion. The selective diversity mitigates deep Rayleigh fades, while the dynamic automatic level control drastically reduces the uplink backhaul dynamic range to allow for greater backhaul distances. Predictive feedforward automatic level control also eliminates overload and saturation of the backhaul high power amplifier, normally caused by wide variations in uplink power levels.
    • 在传统的时分多址(TDMA)无线系统中,由于时隙同步约束,移动单元与基站收发器系统(BTS)之间的指定距离不能超过预定距离。 此外,移动单元与BTS之间的距离变化以及由直接和反射信号之间的相互干扰影响引起的瑞利衰落造成来自移动台的初始上行链路信号的极端信号强度变化。 使用空间多样的天线来接收上行链路信号提供分集增益并减轻深度衰落。 此外,选择较强的空间多样化的上行链路信号可以减轻深度衰落,并减少回程频带中的频率使用。 在这种扩展TDMA系统覆盖的方法中,带内转换器组件位于通常包含基站收发器系统(BTS)的远程小区的中心。 带内转换器包括以预定的前馈方式实现逐时隙选择性空间分集和自动电平控制的延迟元件。 选择性分集减轻了瑞利衰落深度,而动态自动电平控制大大降低了上行链路回程动态范围,从而允许更大的回程距离。 预测前馈自动电平控制还消除了回程高功率放大器的过载和饱和,通常由上行链路功率电平的宽泛变化引起。
    • 7. 发明授权
    • Frequency re-use planning for wireless communications system using wireless translating repeaters
    • 使用无线翻译中继器的无线通信系统的频率重用规划
    • US06370384B1
    • 2002-04-09
    • US09362867
    • 1999-07-29
    • Michael A. Komara
    • Michael A. Komara
    • H04Q720
    • H04W16/12H04B7/2606H04W16/26
    • A novel improved frequency re-use planning which allows the most efficient bandwidth utilization and a larger coverage area in a wireless communications network utilizing translating repeaters is described. The wireless communications network has an available radio frequency bandwidth divided into a number of radio frequency communication channels. The channel assignments according to the frequency re-use plan described by this invention makes possible to achieve larger service coverage area using one or more base transceiver system, and efficient utilization of the limited bandwidth allocated to the network. According to the inventive frequency re-use planning, two adjacently located frequency channels are utilized while still meeting the signal isolation requirement between the adjacent channels by assigning the adjacent channels to cells that are remotely located from each other.
    • 描述了一种改进的频率再利用规划,其允许使用转换中继器的无线通信网络中最有效的带宽利用和更大的覆盖区域。 无线通信网络具有划分成多个射频通信信道的可用射频带宽。 根据本发明描述的频率重用计划的信道分配使得可以使用一个或多个基站收发器系统实现更大的业务覆盖区域,并且有效利用分配给网络的有限带宽。 根据本发明的频率重用规划,利用两个相邻定位的频道,同时通过将相邻信道分配给彼此远距离的小区,仍然满足相邻信道之间的信号隔离要求。
    • 8. 发明授权
    • Translating repeater system with improved backhaul efficiency
    • 具有改进回程效率的翻译中继器系统
    • US06370185B1
    • 2002-04-09
    • US09636344
    • 2000-08-10
    • Thomas R. SchmutzMichael A. KomaraJohn R. Noll
    • Thomas R. SchmutzMichael A. KomaraJohn R. Noll
    • H04L2560
    • H04B7/2606
    • The invention discloses a method and apparatus for supporting increased capacity on a backhaul communications link carrier frequency of a wireless communication system the uses a repeater station. Uplink RF carrier signals from a plurality of mobile units each having a first modulation scheme, are received at a serving repeater station. These uplink signals containing traffic and control information are demodulated and then re-modulated by a second modulation scheme having a higher-order modulation than the first modulation scheme. The re-modulated signal containing a plurality of uplink carrier signals within a single RF carrier signal is then transmitted over an uplink channel of a backhaul communication link. Additionally, the invention discloses a method for aggregating data on the uplink channel of a backhaul communications link. A plurality of uplink RF carrier signals from a plurality of mobile units are each received at a repeater station. Each of the uplink carrier signals containing traffic and control information are then compressed into a single RF carrier signal which is transmitted over an uplink channel of a backhaul communication link.
    • 本发明公开了一种用于在使用中继站的无线通信系统的回程通信链路载波频率上支持增加容量的方法和装置。 来自多个具有第一调制方案的移动单元的上行链路RF载波信号在服务中继站处被接收。 包含业务和控制信息的这些上行链路信号被解调,然后通过具有比第一调制方案更高阶调制的第二调制方案进行再调制。 然后,在单个RF载波信号中包含多个上行链路载波信号的再调制信号通过回程通信链路的上行链路信道发送。另外,本发明公开了一种在回程通信链路的上行链路信道上聚合数据的方法 。 来自多个移动单元的多个上行链路RF载波信号各自在中继站处被接收。 然后,将包含业务和控制信息的每个上行链路载波信号压缩成通过回程通信链路的上行链路信道发送的单个RF载波信号。
    • 9. 发明授权
    • Method and apparatus employing wireless remote loopback capability for a wireless system repeater to provide end-to-end testing without a wireline connection
    • 无线系统中继器采用无线远程环回能力的方法和装置,以提供无需有线连接的端到端测试
    • US06253060B1
    • 2001-06-26
    • US09280543
    • 1999-03-30
    • Michael A. KomaraThomas R. SchmutzJeffrey R. NuckolsRoger L. OvertonThomasz Strzelec
    • Michael A. KomaraThomas R. SchmutzJeffrey R. NuckolsRoger L. OvertonThomasz Strzelec
    • H04B7155
    • H04W88/08H04B7/155H04B17/40H04B17/408H04W16/26
    • A method and apparatus for using a loopback capability of a radio frequency (RF) repeater to provide for end-to-end testing without a wireline connection is disclosed. A RF source sends a signaling waveform to the RF repeater. Upon receiving the signaling waveform, the RF repeater enters the loopback mode. The RF source sends another identical signaling waveform to the RF repeater to end the loopback mode. In another embodiment, a base transceiver station (BTS) sends a signaling waveform to an intelligent RF repeater-translator upon detection of a lack of activity. The received signaling waveform places the intelligent RF repeater translator into a loopback mode. If alarms are present in the intelligent RF repeater-translator, the intelligent RF repeater-translator ceases processing and the BTS informs the OMC of the error condition. Otherwise, the loopback mode is entered and BTS initiates testing of the intelligent RF repeater-translator. The loopback mode is discontinued when the intelligent RF repeater-translator receives another identical signaling waveform or after a time-out period elapses. The intelligent RF repeater-translator has the capability to alternate the selected diversity uplink path from one loopback test to the next loop back test to ensure full testing of all RF paths.
    • 公开了一种使用射频(RF)中继器的环回能力来提供端到端测试而不需要有线连接的方法和装置。 RF源向RF中继器发送信令波形。 在接收到信令波形时,RF中继器进入环回模式。 RF源向RF中继器发送另一个相同的信令波形,以结束环回模式。 在另一个实施例中,基站收发台(BTS)在检测到活动不足时向智能RF中继器翻译器发送信令波形。 接收到的信令波形将智能RF中继器转换器置于环回模式。 如果智能RF中继器翻转器中存在报警,则智能RF中继器转换器停止处理,BTS通知OMC出现错误状况。 否则,进入环回模式,BTS启动智能RF中继器转换器的测试。 当智能RF中继器转换器接收到另一个相同的信令波形或经过超时时间后,环回模式将停止。 智能RF中继器转换器具有将选择的分集上行链路路径从一个环回测试交替到下一个环回测试的能力,以确保对所有RF路径的全面测试。