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1. 发明授权

US06487187B1 Random access control channel gain control and time slot recovery for remote in-band translator in time division multiple access wireless system 有权
标题翻译：用于时分多址无线系统的远程带内转换器的随机存取控制信道增益控制和时隙恢复
公开(公告)号：US06487187B1
公开(公告)日：2002-11-26
申请号：US09198808
申请日：1998-11-24
申请人： Thomas R. Schmutz , Michael A. Komara , Roger L. Overton , Jeffrey W. Smith , David D. Coons , Jeffrey R. Nuckols
发明人： Thomas R. Schmutz , Michael A. Komara , Roger L. Overton , Jeffrey W. Smith , David D. Coons , Jeffrey R. Nuckols
IPC分类号： H04B7212
CPC分类号： H04B7/2656 , H04W16/26 , H04W52/325
摘要： 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, the varying distances between mobile units and the BTS create timing differences in the random access control channel (RACCH) bursts in the initial uplink signal from the mobile stations. 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. The in-band translators include a loop back circuit that permits a host BTS to measure the backhaul propagation time delay by sending test access signals between the host BTS and the distant in-band translators. After backhaul timing delay is compensated in the BTS, then the in-band translator uses downlink time slot recovery to synchronize slot-by-slot uplink diversity selection and automatic level control. Recovery of timing bursts on downlink from the BTS allows for determination of burst, frame, and multiframe timing for downlink and uplink in the in-band translator. Processing allows for pre-determination of which uplink time slots that the RAACH signal can appear from the mobile unit. This method allows for automatic level control during RAACH bursts in addition to normal uplink bursts.
摘要翻译：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，移动单元和BTS之间的变化的距离在来自移动台的初始上行链路信号中在随机接入控制信道（RACCH）突发中产生定时差。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的远程小区的中心。带内转换器包括回送电路，其允许主机BTS通过在主机BTS和远端带内转换器之间发送测试接入信号来测量回程传播时间延迟。在BTS中补偿回程定时延迟后，带内转换器使用下行链路时隙恢复来同步逐个时隙上行链路分集选择和自动电平控制。来自BTS的下行链路上的定时突发的恢复允许确定下行链路和上行链路的突发，帧和多帧定时带内翻译器。处理允许预先确定RAACH信号可以从移动单元出现哪些上行链路时隙。该方法允许除了正常的上行链路突发之外的RAACH突发期间的自动电平控制。

2. 发明授权

US06253060B1 Method and apparatus employing wireless remote loopback capability for a wireless system repeater to provide end-to-end testing without a wireline connection 有权
标题翻译：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
公开(公告)号：US06253060B1
公开(公告)日：2001-06-26
申请号：US09280543
申请日：1999-03-30
申请人： Michael A. Komara , Thomas R. Schmutz , Jeffrey R. Nuckols , Roger L. Overton , Thomasz Strzelec
发明人： Michael A. Komara , Thomas R. Schmutz , Jeffrey R. Nuckols , Roger L. Overton , Thomasz Strzelec
IPC分类号： H04B7155
CPC分类号： H04W88/08 , H04B7/155 , H04B17/40 , H04B17/408 , H04W16/26
摘要： 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.
摘要翻译：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。

3. 发明授权

US06339694B1 Method and apparatus employing automatic RF muting and wireless remote control of RF downlink transmission for a wireless repeater 有权
标题翻译：对无线中继器采用RF下行链路传输的自动RF静噪和无线遥控的方法和装置
公开(公告)号：US06339694B1
公开(公告)日：2002-01-15
申请号：US09280542
申请日：1999-03-30
申请人： Michael A. Komara , Thomas R. Schmutz , Jeffrey R. Nuckols , Roger L. Overton
发明人： Michael A. Komara , Thomas R. Schmutz , Jeffrey R. Nuckols , Roger L. Overton
IPC分类号： H04B715
CPC分类号： H04B7/15535 , H03G3/348 , H04W52/52
摘要： A method and apparatus employing automatic radio frequency (RF) muting and wireless remote control of RF downlink transmission is disclosed for the protection of a downlink amplifier of a wireless repeater system. The present invention has broad application in systems where a RF controller controls the function of a remote RF re-transmitter. A control module in the remote RF re-transmitter disables a downlink amplifier when a initial power-up, power reset, or transmission lull occurs. A control signal from the RF controller enables the downlink amplifier when the RF controller is ready to transmit. In another embodiment of the present invention, a control module disables a downlink amplifier and automatic level control (ALC) of the remote RF re-transmitter during a initial power-up, power reset or transmission lull. When an enable signal is sent by the RF controller the control module enables the downlink amplifier and initializes the ALC with an initial attenuation values. In another embodiment of the present invention adapted to be used in a system with a base transceiver station and a remote RF cell controller. The system conforms with the GSM-900, GSM-1800, and GSM-1900 standards.
摘要翻译：公开了一种采用自动射频（RF）静音和RF下行链路传输的无线远程控制的方法和装置，用于保护无线中继器系统的下行链路放大器。本发明在RF控制器控制远程RF重新发射机的功能的系统中具有广泛的应用。当发生初始上电，电源复位或传输暂停时，远程RF重新发送器中的控制模块禁用下行链路放大器。来自RF控制器的控制信号使得当RF控制器准备好发送时的下行放大器。在本发明的另一实施例中，控制模块在初始上电，电源复位或传输期间暂停时禁用远程RF重新发射机的下行链路放大器和自动电平控制（ALC）。当RF控制器发送使能信号时，控制模块使能下行放大器，并以初始衰减值初始化ALC。在本发明的另一个实施例中，适用于具有基站收发台和远程RF小区控制器的系统。该系统符合GSM-900，GSM-1800和GSM-1900标准。

4. 发明授权

US06690662B1 Method and apparatus employing wireless in-band signaling for downlink transmission of commands and uplink transmission of status for a wireless system repeater 有权
标题翻译：用于无线系统中继器的命令的下行链路传输和状态的上行链路传输的无线带内信令的方法和装置
公开(公告)号：US06690662B1
公开(公告)日：2004-02-10
申请号：US09397921
申请日：1999-09-17
申请人： Michael A. Komara , Thomas R. Schmutz , Roger L. Overton
发明人： Michael A. Komara , Thomas R. Schmutz , Roger L. Overton
IPC分类号： H04B7216
CPC分类号： H04B7/2606 , H04W88/085
摘要： An approach to improving TDMA system operation is disclosed wherein 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 employ wireless in-band signaling for downlink transmission of commands from an operation and maintenance center (OMC) and uplink transmission of status-indicating and alarm signal data. The remotely located repeaters of the present invention have frequency shift key detection and demodulation capability incorporated in the downlink path, while also incorporating FSK modulation capability into the uplink path. This allows the repeater to extract commands from the serving BTS downlink signal and act on them. It also allows for the repeater to transmit status-indicating signals and alarms to the OMC via the uplink path to the serving BTS.
摘要翻译：公开了一种改进TDMA系统操作的方法，其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。转换器采用无线带内信令用于来自操作和维护中心（OMC）的命令的下行链路传输以及状态指示和报警信号数据的上行链路传输。本发明的远程重传器具有并入在下行链路路径中的频移键检测和解调能力，同时也将FSK调制能力并入上行链路路径。这允许中继器从服务BTS下行链路信号中提取命令并作用于它们。它还允许中继器通过到服务BTS的上行链路路径向OMC发送状态指示信号和报警。

5. 发明授权

US5894497A Reducing spurious modulation products in broadband multicarrier transmission by coherrent summation of the outputs of dissimilar digital-to analog device types 失效
标题翻译：减少宽带多载波传输中的杂散调制产品，通过不同数字到模拟设备类型的输出
公开(公告)号：US5894497A
公开(公告)日：1999-04-13
申请号：US770871
申请日：1996-12-20
申请人： Roger L. Overton
发明人： Roger L. Overton
IPC分类号： H04L27/26 , H04L27/04
CPC分类号： H04L27/2626
摘要： The Spurious-Free Dynamic Range (SFDR) in a broadband digital radio transceiver is typically limited by the required digital-to-analog converter which introduces differential nonlinearities that cause harmonic distortion in intermodulation products. The invention was a digital-to-analog conversion subsystem that coherently combines the outputs of two or more digital-to-analog converters that have different internal architectures. As a result, spurious responses are not correlated with one another while desired signal components do add coherently. The spurious responses therefore cancel in the combined output while the desired signal components add in phase. The overall result is to increase spurious-free dynamic range at the radio transmitter output.
摘要翻译：宽带数字无线电收发器中的无杂散动态范围（SFDR）通常受限于所需的数模转换器，其引入在互调产物中引起谐波失真的差分非线性。本发明是数字到模拟转换子系统，其相干地组合具有不同内部架构的两个或多个数模转换器的输出。结果，杂散响应彼此不相关，而期望的信号分量确实相加。因此，杂散响应在组合输出中消失，而期望的信号分量相加。总体结果是增加无线电发射机输出端的无杂散动态范围。

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