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1. 发明授权

US07983230B1 Adaptive power and data rate control for ad-hoc mobile wireless systems 有权
标题翻译：自组织移动无线系统的自适应功率和数据速率控制
公开(公告)号：US07983230B1
公开(公告)日：2011-07-19
申请号：US11775988
申请日：2007-07-11
申请人： Don Li , Kristina Carlin
发明人： Don Li , Kristina Carlin
IPC分类号： H04W4/00 , H04L12/40 , H04L12/413
CPC分类号： H04W52/262 , H04W24/00 , H04W48/08 , H04W52/267 , H04W74/004 , H04W74/006 , H04W84/18
摘要： A method for controlling transmit power of a node in wireless network, such as, e.g., an ad-hoc wireless network operating in accordance with a carrier sense multiple access (CSMA) protocol and where asymmetrical radio links may exist. During a request to send (RTS) and clear to send (CTS) exchange between a first node and a second node, both a request to send (RTS) packet and a probing request to send (PrRTS) packet are transmitted from the first node to the second node. The transmit power and data rate of the PrRTS packet may be different from the transmit power and data rate of the RTS packet. In response, the second node returns a CTS packet that includes a signal to noise ratio (SNR) for both the RTS packet and the PrRTS packet. A correction factor for data transmit power is then computed based in part on both the SNR for the RTS and the SNR for the PrRTS, and a data packet is thereafter transmitted at a power level that has been modified in accordance with the correction factor. The correction factor may further aid the estimation of the signal-to-noise-and-interference ratio (S/(N+I)) at a receiving node, which enables a sending node either to overcome the interference by adjusting the transmit power or avoid the interference by not accessing the channel until it hears the node again.
摘要翻译：一种用于控制无线网络中的节点的发射功率的方法，例如根据载波侦听多路访问（CSMA）协议操作的自组织无线网络，以及其中可能存在不对称的无线电链路。在第一节点和第二节点之间发送（RTS）和清除发送（CTS）交换的请求期间，发送请求（RTS）分组和发送请求（PrRTS）分组都从第一节点到第二个节点。 PrRTS分组的发射功率和数据速率可能与RTS分组的发射功率和数据速率不同。作为响应，第二节点返回包括RTS分组和PrRTS分组的信噪比（SNR）的CTS分组。然后部分地基于RTS的SNR和PrRTS的SNR来计算数据发射功率的校正因子，然后以已经根据校正因子修改的功率电平发送数据分组。校正因子可以进一步有助于估计接收节点处的信噪比干扰比（S /（N + I）），这使得发送节点能够通过调整发射功率来克服干扰，避免在不再访问频道的情况下再次听到节点的干扰。

2. 发明授权

US06993065B2 Multi-channel spread spectrum system 失效
标题翻译：多通道扩频系统
公开(公告)号：US06993065B2
公开(公告)日：2006-01-31
申请号：US09970888
申请日：2001-10-05
申请人： Don Li , Gang Yang
发明人： Don Li , Gang Yang
IPC分类号： H04B1/707
CPC分类号： H04B7/2628 , H04B1/7105 , H04J13/004
摘要： A multi-channel spread-spectrum system separates a data stream, for example from a convolutional encoder and an interleaver, into sub-channel data-sequence signals. For each sub-channel data-sequence signal, m bits are translated to one code of a unique set of orthogonal chip-sequence signals. The other k bits of the same sub-channel data-sequence signal are translated to a distinct phasor. Each phasor is used to modulate the respective chip-sequence signal. A complex-signal combiner combines the real and imaginary components of all the phase-modulated chip-sequence signals into in-phase (I) and quadrature (Q) spread-spectrum multi-channel signals, which are spread by a cell-site specific signature-sequence. The receiver decorrelates the received spread-spectrum signal, preferably with a bank of matched filter (MF) joint-detectors, to recover the bits from all the spread-spectrum sub-channel signals for remultiplexing into the transmitted data stream. The multi-channel spread-spectrum system supports constant data rate throughout the cell by maintaining a large processing gain, at the demultiplexed sub-channel data sequence level, thus a code-reuse-one type spread-spectrum system can be deployed with the aid of power control.
摘要翻译：多通道扩频系统将例如从卷积编码器和交织器的数据流分离成子信道数据序列信号。对于每个子信道数据序列信号，将m位转换为唯一的一组正交码片序列信号的一个码。相同子信道数据序列信号的其他k位被转换为独立的相量。每个相量用于调制相应的码片序列信号。复信号组合器将所有相位调制芯片序列信号的实部和虚部组合到同相（I）和正交（Q）扩频多通道信号中，这些信号由小区站点特定签名序列。接收机将所接收的扩频信号优选地与一组匹配滤波器（MF）联合检测器去相关，以从所有扩频子信道信号中恢复比特，以便再次复用到所发送的数据流中。多通道扩频系统通过在解复用的子信道数据序列级别保持大的处理增益来支持整个小区的恒定数据速率，从而可以借助于部署代码重用一类型扩频系统的电源控制。

3. 发明授权

US06714586B2 Sliding matched filter with flexible hardware complexity 有权
标题翻译：滑动匹配滤波器具有灵活的硬件复杂性
公开(公告)号：US06714586B2
公开(公告)日：2004-03-30
申请号：US09852085
申请日：2001-05-10
申请人： Gang Yang , Don Li
发明人： Gang Yang , Don Li
IPC分类号： H04B1707
CPC分类号： H04B1/70751 , H04B1/70752 , H04B1/70775 , H04B1/7093 , H04B1/7095
摘要： Multi-path effects are common in mobile communications. When coupled with spread-spectrum signals utilizing spreading code sequences, detection of more than one multi-path signal becomes a necessity in order to output a clean signal with little loss. In accord with the invention, a spread-spectrum sliding matched-filter searcher system comprises a partial matched-filter that receives the input spread-spectrum signal. The searcher matches samples of the input signal with a tap length m of the reference code and produces a first correlation value. The first correlation value is compared to a first threshold. When it equals or exceeds the first threshold, the first correlation value is integrated to produce a second correlation value. This second value is compared with a second threshold, which if met signifies the detection of the multi-path signal. The process is repeated until all significant multi-path signals are detected. This design of the present invention is flexible in nature because the searcher can be programmed to act like a matched-filter, a correlator, or a combination of both while significantly improving the search time and reducing the amount of hardware and complexity characteristic of a matched-filter.
摘要翻译：多路径效应在移动通信中很常见。当与利用扩展码序列的扩展频谱信号相结合时，为了输出几乎没有损失的干净信号，检测多于一个多路径信号是必要的。根据本发明，扩频滑动匹配滤波器搜索器系统包括接收输入扩频信号的部分匹配滤波器。搜索者使用参考码的抽头长度m匹配输入信号的样本，并产生第一相关值。将第一相关值与第一阈值进行比较。当其等于或超过第一阈值时，第一相关值被积分以产生第二相关值。将该第二值与第二阈值进行比较，如果满足表示多路径信号的检测。重复该过程，直到检测到所有有效的多路径信号。本发明的这种设计本质上是灵活的，因为搜索器可被编程为像匹配滤波器，相关器或两者的组合一样起作用，同时显着地改善搜索时间并减少硬件的数量和匹配的复杂度特性 -过滤。

4. 发明授权

US08310939B2 Method, system, and device for configuring operation, administration and maintenance properties 有权
标题翻译：用于配置操作，管理和维护属性的方法，系统和设备
公开(公告)号：US08310939B2
公开(公告)日：2012-11-13
申请号：US12690212
申请日：2010-01-20
申请人： Hao Long , Jianhua Gao , Don Li , Jixiong Dong
发明人： Hao Long , Jianhua Gao , Don Li , Jixiong Dong
IPC分类号： G01R31/08 , G06F11/00 , G08C15/00
CPC分类号： H04L41/0803 , H04L41/0889 , H04L41/26
摘要： A method for configuring operation, administration and maintenance (OAM) properties, a system for configuring OAM properties, and a node device are provided. The method includes: delivering a message carrying OAM property configuration indicating information; and flowing through a plurality of nodes to be configured in the process of delivering the message, and configuring, by each of the nodes to be configured, an OAM property of the present node according to the OAM property configuration indicating information in the message flowing through the present node.
摘要翻译：提供了一种用于配置操作，管理和维护（OAM）属性的方法，用于配置OAM属性的系统和节点设备。该方法包括：传送携带指示信息的OAM属性配置的消息; 并且流经多个节点以在传递消息的过程中被配置，并且由每个要配置的节点配置根据OAM属性配置的本节点的OAM属性，该属性配置指示消息中流传的消息中的信息本节点。

5. 发明申请

US20100118708A1 METHOD, SYSTEM, AND DEVICE FOR CONFIGURING OPERATION, ADMINISTRATION AND MAINTENANCE PROPERTIES 有权
标题翻译：用于配置操作，管理和维护属性的方法，系统和设备
公开(公告)号：US20100118708A1
公开(公告)日：2010-05-13
申请号：US12690212
申请日：2010-01-20
申请人： Hao LONG , Jianhua Gao , Don Li , Jixiong Dong
发明人： Hao LONG , Jianhua Gao , Don Li , Jixiong Dong
IPC分类号： H04L12/26
CPC分类号： H04L41/0803 , H04L41/0889 , H04L41/26
摘要： A method for configuring operation, administration and maintenance (OAM) properties, a system for configuring OAM properties, and a node device are provided. The method includes: delivering a message carrying OAM property configuration indicating information; and flowing through a plurality of nodes to be configured in the process of delivering the message, and configuring, by each of the nodes to be configured, an OAM property of the present node according to the OAM property configuration indicating information in the message flowing through the present node.
摘要翻译：提供了一种用于配置操作，管理和维护（OAM）属性的方法，用于配置OAM属性的系统和节点设备。该方法包括：传送携带指示信息的OAM属性配置的消息; 并且流经多个节点以在传递消息的过程中被配置，并且由每个要配置的节点配置根据OAM属性配置的本节点的OAM属性，该属性配置指示消息中流传的消息中的信息本节点。

6. 发明授权

US06937641B2 Power-controlled random access 有权
标题翻译：功率随机接入
公开(公告)号：US06937641B2
公开(公告)日：2005-08-30
申请号：US10083687
申请日：2002-02-27
申请人： Don Li , Gang Yang
发明人： Don Li , Gang Yang
IPC分类号： H04B7/005 , H04L12/56 , H04K1/00 , H04B1/707
CPC分类号： H04W52/08 , H04W52/10 , H04W52/24 , H04W52/48 , H04W52/50 , H04W52/54 , H04W74/08
摘要： A novel power-controlled random-access method allows a mobile station to gain fast access to the base station. At the mobile station, a composite power control command is devised after an initial access attempt. The determination of the composite command uses an open-loop power-control symbol and a closed-loop power-control symbol, to decide the action of the mobile station upon transmission of its next random-access signal. In the preferred embodiment, the composite power control command can specify different levels of increase or decrease in transmission power, and the composite power control command can specify a back-off by the mobile station. This composite power-control mechanism can help resolve collision between mobile stations accessing the same random access sub-channel and therefore maintain a low-delay in the random-access process and a high-utilization on the access-channel resource.
摘要翻译：一种新颖的功率控制随机接入方法允许移动台获得对基站的快速接入。在移动站，在初始接入尝试之后设计复合功率控制命令。复合命令的确定使用开环功率控制符号和闭环功率控制符号来决定移动台在其下一个随机接入信号的传输时的动作。在优选实施例中，复合功率控制命令可以指定不同的发送功率的增加或减少的水平，并且复合功率控制命令可以指定移动台的退避。该复合功率控制机制可以帮助解决接入相同随机接入子信道的移动台之间的冲突，从而在随机接入过程中保持低延迟，并且在接入信道资源上保持高的利用率。

7. 发明授权

US06843597B1 Method and apparatus of a fast two-loop automatic gain control circuit 有权
标题翻译：快速双回路自动增益控制电路的方法和装置
公开(公告)号：US06843597B1
公开(公告)日：2005-01-18
申请号：US09854620
申请日：2001-05-15
申请人： Don Li , Gang Yang
发明人： Don Li , Gang Yang
IPC分类号： H03G3/30 , H04B1/707 , H04L27/00 , H04L27/38 , H04L27/08
CPC分类号： H04L27/3809 , H03G3/3052 , H04B1/7117 , H04L2027/0067
摘要： In a burst-mode, high-speed spread-spectrum communications system, faster convergence of a receiver's automatic gain control (AGC) circuit reduces the time required to bring a received signal within the operating range of an operation amplifier and other radio-frequency and digital sections of the receiving system. A gain control circuit includes a coarse-gain feedback loop and a fine-gain feedback loop to improve convergence speed and at the same time maintain the stability of the AGC circuit. The coarse-gain feedback loop quickly brings the received signal, using a large gain signal, to the desired operating range. The fine-gain feedback loop uses a smaller gain signal to gradually smooth the received signal to avoid saturation on the A/D converters.
摘要翻译：在突发模式下，高速扩频通信系统，接收机的自动增益控制（AGC）电路的更快的收敛减少了将接收信号带到运算放大器和其他射频的工作范围内所需的时间，接收系统的数字部分。增益控制电路包括粗增益反馈回路和精细增益反馈回路，以提高收敛速度，同时保持AGC电路的稳定性。粗增益反馈环路将接收到的信号快速地使用大增益信号传送到所需的工作范围。微增益反馈环路使用较小的增益信号来逐渐平滑接收信号，以避免A / D转换器饱和。

8. 发明授权

US5477735A Two-wire constant current powered transducer 失效
标题翻译：双线恒流供电传感器
公开(公告)号：US5477735A
公开(公告)日：1995-12-26
申请号：US105873
申请日：1993-08-11
申请人： Don Li
发明人： Don Li
IPC分类号： G01P7/00 , G01H1/00 , G01H11/06 , G01H11/08 , H03F3/347 , H03F3/45 , H03F3/04
CPC分类号： G01H11/06 , G01H1/003 , H03F3/347
摘要： A two-wire constant current powered transducer (10) for detecting, integrating and transmitting an acceleration signal (50) received from a piezoelectric crystal (12). The crystal is operatively coupled to rotating machinery (M) such that rotating anomalies correlative of wear or potential failure can be detected early enough for preventative maintenance. The transducer (10) includes two stages (30, 40). The first stage (30) is an integrator which integrates the acceleration to velocity. The second stage (40) is a gain stage. The gain stage operates with a PNP transistor emitter follower to control the output DC bias level and route the integrated acceleration signal back to the control system.
摘要翻译：一种用于检测，积分和传输从压电晶体（12）接收的加速度信号（50）的二线恒流供电传感器（10）。晶体可操作地耦合到旋转机械（M），使得可以及早检测到与磨损或潜在故障相关的旋转异常以进行预防性维护。换能器（10）包括两个阶段（30,40）。第一阶段（30）是将加速度与速度相结合的积分器。第二阶段（40）是增益阶段。增益级与PNP晶体管射极跟随器一起工作，以控制输出直流偏置电平，并将集成加速度信号转发回控制系统。

9. 发明授权

US07453961B1 Methods and apparatus for detection of signal timing 有权
标题翻译：用于检测信号时序的方法和装置
公开(公告)号：US07453961B1
公开(公告)日：2008-11-18
申请号：US11032025
申请日：2005-01-11
申请人： Don Li , Dennis D McCrady
发明人： Don Li , Dennis D McCrady
IPC分类号： H04L27/06
CPC分类号： H04B1/7075 , G01C21/206 , G01S5/0215 , G01S19/22 , H04B2201/70715
摘要： A technique is described for determining the timing of a received signal that includes one or more time-delayed versions of a reference signal traveling over respective different signal paths. The technique includes correlating the received signal with the reference signal to produce a correlated signal; determining whether the correlated signal includes a signal peak that corresponds to the direct path of the received signal; and iterative repeating these operations until a signal peak is determined to correspond to the direct path of the received signal. In each successive iteration, the reference signal corresponding to at least the greatest signal peak in the correlated signal is regenerated, and contributions from each regenerated reference signal are removed from the received signal prior to correlating the received signal in the next iteration.
摘要翻译：描述了一种用于确定包括在各个不同信号路径上行进的参考信号的一个或多个时间延迟版本的接收信号的定时的技术。该技术包括将接收到的信号与参考信号相关以产生相关信号; 确定相关信号是否包括对应于接收信号的直接路径的信号峰值; 并迭代重复这些操作，直到确定信号峰值以对应于接收信号的直接路径。在每次连续的迭代中，对应于相关信号中的至少最大信号峰值的参考信号被再生，并且在将下一次迭代中的接收信号相关之前，从接收信号中去除每个再生的参考信号的贡献。

10. 发明申请

US20050254467A1 Power-controlled random access 审中-公开
公开(公告)号：US20050254467A1
公开(公告)日：2005-11-17
申请号：US11186777
申请日：2005-07-22
申请人： Don Li , Gang Yang
发明人： Don Li , Gang Yang
IPC分类号： H04B7/005 , H04L12/56 , H04B7/216
CPC分类号： H04W52/08 , H04W52/10 , H04W52/24 , H04W52/48 , H04W52/50 , H04W52/54 , H04W74/08
摘要： A novel power-controlled random-access method allows a mobile station to gain fast access to the base station. At the mobile station, a composite power control command is devised after an initial access attempt. The determination of the composite command uses an open-loop power-control symbol and a closed-loop power-control symbol, to decide the action of the mobile station upon transmission of its next random-access signal. In the preferred embodiment, the composite power control command can specify different levels of increase or decrease in transmission power, and the composite power control command can specify a back-off by the mobile station. This composite power-control mechanism can help resolve collision between mobile stations accessing the same random access sub-channel and therefore maintain a low-delay in the random-access process and a high-utilization on the access-channel resource.

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