公开(公告)号：US07366515B2

公开(公告)日：2008-04-29

申请号：US10836245

申请日：2004-05-03

申请人： Wen Zhao ,  Xin Jin ,  Munammad Khalecul Islam ,  Haining Zhang

发明人： Wen Zhao ,  Xin Jin ,  Munammad Khalecul Islam ,  Haining Zhang

IPC分类号： H04Q7/20

CPC分类号： H04L67/26 ,  H04L67/04 ,  H04L69/22 ,  H04W4/20 ,  H04W8/22

摘要： A method and system of reachability indication between a wireless device and at least one push server, the method comprising the steps of: sending device status information from the wireless device to the at least one push server; and receiving the status information at the at least one push server; wherein the at least one push server is enabled to selectively start and stop serving the wireless device on the basis of the status information. The method further comprises sending status information to a packet data serving node that stores a list of push servers associated with a wireless device, and having the packet data serving node forward the status information to the push server. The system and method further includes selectively starting and stopping the serving of the wireless device by the push server during a voice call.

摘要翻译： 一种在无线设备与至少一个推送服务器之间的可达性指示的方法和系统，所述方法包括以下步骤：将设备状态信息从所述无线设备发送到所述至少一个推送服务器; 以及在所述至少一个推送服务器处接收所述状态信息; 其中所述至少一个推送服务器能够基于所述状态信息选择性地启动和停止服务所述无线设备。 该方法还包括向存储与无线设备相关联的推送服务器的列表的分组数据服务节点发送状态信息，并且使分组数据服务节点将状态信息转发到推送服务器。 该系统和方法还包括在语音呼叫期间选择性地启动和停止推送服务器对无线设备的服务。

公开(公告)号：US07356102B2

公开(公告)日：2008-04-08

申请号：US10725689

申请日：2003-12-02

申请人： Steven P. Morton ,  Qing Zhong Jiao ,  Xin Jin

发明人： Steven P. Morton ,  Qing Zhong Jiao ,  Xin Jin

IPC分类号： H04L27/08

CPC分类号： H03G3/3036 ,  H03G1/04 ,  H03G3/30

摘要： Systems and methods are provided for controlling gain compensation over temperature and frequency variations. A variable amplifier may be used to receive a control signal and an input signal. The variable amplifier may be operable to apply a gain to the input signal to generate an output signal, wherein the gain is a function of the control signal. A summation module may be used to combine a gain reference signal and a gain variation signal to generate the control signal. The gain reference signal may be calibrated at a reference temperature and a reference frequency. A gain calibration module may be used to output the gain variation signal as a function of both a current operating temperature and a current operating frequency.

摘要翻译： 提供了用于控制温度和频率变化的增益补偿的系统和方法。 可以使用可变放大器来接收控制信号和输入信号。 可变放大器可以可操作地对输入信号施加增益以产生输出信号，其中增益是控制信号的函数。 可以使用求和模块来组合增益参考信号和增益变化信号以产生控制信号。 增益参考信号可以在参考温度和参考频率下校准。 可以使用增益校准模块来输出作为当前工作温度和当前工作频率的函数的增益变化信号。

公开(公告)号：US20070274421A1

公开(公告)日：2007-11-29

申请号：US11776884

申请日：2007-07-12

申请人： Xin Jin ,  Runbo Fu ,  Jorgen Nielsen

发明人： Xin Jin ,  Runbo Fu ,  Jorgen Nielsen

IPC分类号： H04L1/02

CPC分类号： H04L1/0618

摘要： A system and method for obtaining a frequency error estimate representing the difference between a reference frequency and the frequency of a space-time transmit diversity signal is disclosed herein. The method includes taking the correlation of total sums, comprised of partial sums taken in defined first and second intervals, to represent the frequency error as the imaginary component of the correlation function.

摘要翻译： 本文公开了一种用于获得表示基准频率与时空发射分集信号的频率之间的差的频率误差估计的系统和方法。 该方法包括采用由定义的第一和第二间隔中采取的部分和组成的总和的相关，以表示作为相关函数的虚分量的频率误差。

公开(公告)号：US20070049354A1

公开(公告)日：2007-03-01

申请号：US11553862

申请日：2006-10-27

申请人： Xin Jin ,  Muhammad Islam ,  Wen Zhao

发明人： Xin Jin ,  Muhammad Islam ,  Wen Zhao

IPC分类号： H04B1/38

CPC分类号： H04W52/0277 ,  H04W52/0229 ,  Y02D70/122 ,  Y02D70/144

摘要： Methods and apparatus for expeditiously releasing network resources for a mobile station based on low battery and lost signal conditions are disclosed. The wireless network (104) receives a power down warning message from the mobile station (102) indicative of a low battery condition. The wireless network (104) then identifies whether a lost signal condition exists with the mobile station (102). In response to receiving the power down warning message and subsequently identifying the lost signal condition, the wireless network (104) causes network resources for the mobile station to be released. The wireless network (104) infers that the mobile station (102) has powered down due to low battery without enough time to send a power down registration to the wireless network (104).

摘要翻译： 公开了一种基于低电池和丢失信号条件快速释放移动台网络资源的方法和装置。 无线网络（104）从移动台（102）接收指示电池电量不足状况的断电警告消息。 然后，无线网络（104）识别移动台（102）是否存在丢失信号条件。 响应于接收到掉电警告消息并随后识别丢失信号条件，无线网络（104）使得移动站的网络资源被释放。 无线网络（104）推测移动站（102）由于电池电量不足而没有足够的时间向无线网络（104）发送掉电注册。

公开(公告)号：US07162242B2

公开(公告)日：2007-01-09

申请号：US10498025

申请日：2002-12-06

申请人： Wen Zhao ,  Xin Jin

发明人： Wen Zhao ,  Xin Jin

IPC分类号： H04Q7/20 ,  H04B7/00 ,  H04B7/216 ,  H04B17/00

CPC分类号： H04W48/20 ,  H04W4/24 ,  H04W24/02 ,  H04W48/16

摘要： A method of system access from a wireless device to a wireless network, the network having a plurality of base stations includes the steps of: selecting at least one reverse link cost metric from a list of predetermined reverse link cost metrics; determining a reverse link cost according to the selected at least one reverse link cost metric; selecting a candidate base station from the plurality of base stations; sending a probe signal at the reverse link cost to the candidate base station; waiting for a response from the candidate base station within a timeout period; and repeating steps until timeout, or until the condition that a response is received from at least one candidate base station so that at least one candidate base station can be used to provide system access from the wireless device to the wireless network.

公开(公告)号：US20050197137A1

公开(公告)日：2005-09-08

申请号：US10789571

申请日：2004-02-27

申请人： Slaven Radic ,  Xin Jin

发明人： Slaven Radic ,  Xin Jin

IPC分类号： G01S19/03 ,  H04W76/00 ,  H04Q7/20

CPC分类号： G01S19/09 ,  G01S19/17 ,  H04W76/50

摘要： Methods and apparatus for facilitating the determination of Global Positioning System (GPS) location information for a mobile station without disrupting communications of a voice call (e.g. a 911 emergency call). In one illustrative example, the mobile station causes GPS navigational-type data to be regularly or periodically received and stored in memory prior to the voice call. At some point in time, the mobile station receives a voice call request to initiate the voice call. In response, the mobile station derives GPS assistance data based on the GPS navigational-type data. The mobile station then causes a GPS fix to be performed using the GPS assistance data, to thereby obtain GPS measurement data. Thereafter, the mobile station causes the voice call to be established and maintained through the wireless network. The GPS measurement data is transmitted to a location server for calculating the location of the mobile station.

摘要翻译： 便于确定移动台的全球定位系统（GPS）位置信息而不中断话音通信（例如911紧急呼叫）的方法和装置。 在一个说明性示例中，移动台使得GPS导航类型数据在语音呼叫之前被定期地或周期性地接收并存储在存储器中。 在某个时间点，移动台接收语音呼叫请求以发起语音呼叫。 作为响应，移动台基于GPS导航型数据导出GPS辅助数据。 移动台然后使用GPS辅助数据进行GPS定位，从而获得GPS测量数据。 此后，移动台通过无线网络建立和维护语音呼叫。 GPS测量数据被发送到位置服务器以计算移动站的位置。

公开(公告)号：US20050075123A1

公开(公告)日：2005-04-07

申请号：US10679575

申请日：2003-10-06

申请人： Xin Jin ,  Jorgen Nielsen

发明人： Xin Jin ,  Jorgen Nielsen

IPC分类号： H04B7/005 ,  H04B7/00

CPC分类号： H04W52/288 ,  H04W52/283

摘要： A system and method of controlling transmit power for mobile wireless devices with multi-mode operation of antenna are disclosed. A radio control system in a communication device is disclosed, the radio control system comprising: (a) a sensor capable of detecting a change in use mode of said device; (b) a power controller connected to said sensor to determine a power configuration based on the use mode; and (c) a power regulator connected to said power controller to apply the power configuration to a transmitted signal. A method of controlling a power configuration in a communication device is disclosed, comprising the steps of: (a) detecting a use mode; (b) changing the power configuration as a function of the use mode; and (c) communicating at the changed power configuration. A radio control system in a communication device is disclosed, comprising: (a) a sensor capable of detecting a change in use mode of said device; (b) a radio controller connected to said sensor to determine a radio configuration based on the use mode; and (c) a radio configuration module connected to said radio controller to apply the radio configuration to the transmitted signal.

摘要翻译： 公开了一种利用天线的多模式操作来控制移动无线设备的发射功率的系统和方法。 公开了一种通信设备中的无线电控制系统，所述无线电控制系统包括：（a）能够检测所述设备的使用模式变化的传感器; （b）连接到所述传感器的功率控制器，以基于使用模式确定功率配置; 和（c）连接到所述功率控制器的功率调节器以将功率配置应用于所发射的信号。 公开了一种控制通信设备中的功率配置的方法，包括以下步骤：（a）检测使用模式; （b）根据使用模式改变功率配置; 和（c）以改变的电力配置进行通信。 公开了一种通信设备中的无线电控制系统，包括：（a）能够检测所述设备的使用模式变化的传感器; （b）连接到所述传感器的无线电控制器，以基于使用模式确定无线电配置; 以及（c）连接到所述无线电控制器的无线电配置模块，以将无线电配置应用于所发送的信号。

公开(公告)号：US06687511B2

公开(公告)日：2004-02-03

申请号：US09849338

申请日：2001-05-07

申请人： Neil McGowan ,  Xin Jin

发明人： Neil McGowan ,  Xin Jin

IPC分类号： H04B700

CPC分类号： H04B1/707 ,  H04B2201/70706

摘要： A peak power regulator is disclosed that functions within a Code Division Multiple Access (CDMA) transmitter to reduce peak power spikes within baseband signals while maintaining the average output power consistent with the average input power, controlling the out-of-band emissions, and maintaining the in-band signal quality within an acceptable degradation. In-phase and quadrature baseband signals are input to a delay block and an envelope magnitude predictor within the peak power regulator. The envelope magnitude predictor outputs an estimate for the magnitude of the envelope that will be generated when the inputted baseband signals are modulated. This estimate is input to a multiplier that generates a ratio by dividing the estimate by a maximum acceptable envelope magnitude. The ratio is subsequently input to a mapping table that outputs a scaling factor sufficient for reducing peak power spikes. The scaling factor is subsequently input to an optional mean power regulator that generates an instantaneous gain value sufficient to maintain the average output power level at the average input power level. This gain value is applied to two multipliers that are also input with delayed versions of the in-phase and quadrature baseband input signals. The outputs from these two multipliers, after being filtered within lowpass filters to remove out-of-band emissions caused by the scaling, are output from the peak power regulator. These peak power reduced outputs have any peak power spikes scale reduced while maintaining the average power constant.

摘要翻译： 公开了一种峰值功率调节器，其功能在码分多址（CDMA）发射机内，以降低基带信号内的峰值功率尖峰，同时保持与平均输入功率一致的平均输出功率，控制带外发射，并维持 带内信号质量可以降低。 同相和正交基带信号被输入到峰值功率调节器内的延迟块和包络幅度预测器。 包络幅度预测器输出当输入的基带信号被调制时将产生的包络幅度的估计。 该估计被输入到通过将估计除以最大可接受的包络幅度而产生比率的乘法器。 该比率随后被输入到映射表，其输出足以减少峰值功率尖峰的比例因子。 缩放因子随后被输入到可选的平均功率调节器，其产生足以将平均输出功率电平维持在平均输入功率电平的瞬时增益值。 该增益值被应用于同时和正交基带输入信号的延迟版本的两个乘法器。 从峰值功率调节器输出来自这两个乘法器的输出，在经过低通滤波器滤波以消除由缩放引起的带外发射之后。 这些峰值功率降低的输出在保持平均功率恒定的情况下具有任何峰值功率尖峰尺度减小。

公开(公告)号：US20220011438A1

公开(公告)日：2022-01-13

申请号：US17194389

申请日：2021-03-08

申请人： Xin Jin

发明人： Xin Jin

IPC分类号： G01S17/931 ,  G01S17/26 ,  G01S7/481 ,  G01S17/89

摘要： In many applications such as autonomous vehicle and ADAS (advanced driver assistance system), both LIDAR sensor and camera sensor play important and complementary roles in sensing surroundings. The scanless LIDAR sensor on chip architecture disclosed in this application is suitable to build a LIDAR and a camera sensor on a single chip and share one set of optics, enabling a combined FMCW Doppler LIDAR and camera sensor inherently to work together and jointly sense directions simultaneously in parallel without mechanical, electronic or phonic scanning, no extra efforts needed to align them either. Lower costs, higher reliability, and faster detection as well as higher direction sensing accuracy and multi-domain sensing are objectives of this invention. The combined optical sensor provides object sensing information in multiple domains: angles of view (direction vector), distance, relative velocity, colors (in Red-Green-Blue victor) and light strength.

公开(公告)号：US20220011430A1

公开(公告)日：2022-01-13

申请号：US17126623

申请日：2020-12-18

申请人： Zhongyong Guo ,  Xin Jin

发明人： Zhongyong Guo ,  Xin Jin

IPC分类号： G01S17/58 ,  G01S7/481 ,  G01S17/931 ,  G01S7/4913

摘要： Doppler LIDARs, such as those used in ADAS (advanced driver assistance system) and autonomous vehicles, may need to sense objects at many directions. Some of the Doppler LIDAR devices use mechanically moving parts to scan over a range of directions and the various directions are not sensed simultaneously but sensed in turns over time. Mechanical moving parts generally have higher costs, lower reliability and shorter Mean Time To Failure (MTTF). The LIDAR sensor on chip with Doppler-sensing pixels disclosed herein uses a Doppler sensing-chip that enables Doppler LIDAR devices to sense many directions simultaneously in parallel without having to use mechanical scan and mechanical moving parts, even without having to use electronic scan. Lower costs, higher reliability, and faster detection time as well as higher direction sensing accuracy are objectives of this invention.