公开(公告)号：US06590875B1

公开(公告)日：2003-07-08

申请号：US09473014

申请日：1999-12-28

申请人： Yushi Niwa

发明人： Yushi Niwa

IPC分类号： H04B160

CPC分类号： H04B1/745

摘要： In data communication utilizing a radio transmission channel, even in a case where the radio channel is disconnected and a data communication blackout occurs, the center side continues data communication processing, by obtaining information on a period where the data communication is interrupted in advance. The system comprises an application server provided in the center, a radio data communication terminal that performs data communication while moving, a mobile gateway provided in the center as a relay device between the application server and the radio data communication terminal, and a period notification device that transmits period information T at predetermined periods. The radio communication channel is disconnected by the period information transmitted from the period notification device, and the mobile gateway performs communication processing during the radio communication disconnection.

摘要翻译： 在利用无线电传输信道的数据通信中，即使在无线电信道被断开并且发生数据通信中断的情况下，通过事先获得关于数据通信中断的周期的信息，中心侧继续进行数据通信处理。 该系统包括设置在中心的应用服务器，移动时执行数据通信的无线电数据通信终端，作为应用服务器和无线电数据通信终端之间的中继设备的中心的移动网关和周期通知设备 其以预定周期发送周期信息T. 无线通信信道由周期通知装置发送的周期信息断开，移动网关在无线通信断开期间进行通信处理。

公开(公告)号：US06411797B1

公开(公告)日：2002-06-25

申请号：US08716905

申请日：1996-09-20

申请人： Eugene Estinto

发明人： Eugene Estinto

IPC分类号： H04B160

CPC分类号： H04B1/60

摘要： Method and apparatus for performance characterization of Ka band transponders wherein measurements are made. A wideband modulated data signal is used to test the response of the Ka band transponder. A periodic test pattern, preferably a pseudo-noise (PN) sequence, modulated on a carrier, is transmitted to an onboard satellite transponder which then retransmits the signal to a receiver where a down converter is used to output inphase and quadrature phase baseband signals which are digitized and used for measuring one or more of the following: Magnitude and phase response AM/AM and AM/PM Phase noise Bit error rate Data asymmetry I/Q channel imbalance.

摘要翻译： 用于进行测量的Ka波段转发器的性能表征的方法和装置。 宽带调制数据信号用于测试Ka频带转发器的响应。 在载波上调制的周期性测试模式，优选伪噪声（PN）序列被发送到机载卫星转发器，该机载卫星转发器然后将信号重新发送到接收机，其中下变换器用于输出同相和正交相位基带信号， 数字化并用于测量以下的一个或多个：幅度和相位响应AM / AM和AM / PMPhase噪声误差率数据不对称I / Q通道不平衡。

公开(公告)号：US06185407B2

公开(公告)日：2001-02-06

申请号：US09385660

申请日：1999-08-27

申请人： Jeffrey Lee Watson

发明人： Jeffrey Lee Watson

IPC分类号： H04B160

CPC分类号： H04B7/18513 ,  H04B7/195

摘要： A method for evaluating the performance of a LEOS system. The evaluation may determine the minimum and maximum number of hops or delay time required to service a particular source and destination pair or may evaluate the LEOS system as a whole. The evaluation may be used in the design of LEOS systems or to evaluate the performance of an existing LEOS system. This evaluation may then be employed to determine how and when the LEOS system should be employed in servicing communications. A LEOS system constellation is received that is to be considered. Then, a mathematical model for the LEOS system is determined. A source/destination location pair is then selected for consideration. Shortest, longest and intermediate path lengths are then determined for the source/destination location pair for the LEOS system. For each of these path lengths, the probability of occurrence of each of these path lengths as well as a corresponding delay is then determined. Further source/destination location pairs may then be selected for additional consideration. Once a sufficient number of source/destination location pairs have been considered, the performance of the LEOS system may then be evaluated.

摘要翻译： 评估LEOS系统性能的方法。 评估可以确定服务特定源和目的地对所需的跳数或延迟时间的最小和最大数目，或者可以评估整个LEOS系统。 该评估可用于LEOS系统的设计或评估现有LEOS系统的性能。 然后可以采用此评估来确定如何以及何时应用LEOS系统来维护通信。 接收到要考虑的LEOS系统星座。 然后，确定LEOS系统的数学模型。 然后选择源/目的地位置对来考虑。 然后，为LEOS系统的源/目的地位置对确定最短，最长和中间路径长度。 对于这些路径长度中的每一个，然后确定这些路径长度中的每一个的出现概率以及相应的延迟。 然后可以选择进一步的源/目的地位置对以用于另外的考虑。 一旦考虑了足够数量的源/目的地位置对，则可以评估LEOS系统的性能。

公开(公告)号：US06622005B1

公开(公告)日：2003-09-16

申请号：US09517966

申请日：2000-03-03

申请人： Ossi Ilari Grohn

发明人： Ossi Ilari Grohn

IPC分类号： H04B160

CPC分类号： H04Q3/0087 ,  H04W4/12 ,  H04W8/26 ,  H04W24/00 ,  H04W48/08

摘要： A Performance Report Message or other message is received from a first device at a second device. The received message is revised such that a value of a Terminal Endpoint Identifier field in the message is revised according to a predetermined transformation, e.g., by incrementing the value in the Terminal Endpoint Identifier field. The revised message is then transmitted from the second device to a third device. The first, second and third devices may comprise devices of a wireless communications network, such as radio heads and/or a control part (COP). The message is preferably received over a first T1 link connecting the first and second devices, and the revised message is preferably transmitted over a second T1 link connecting the second and third devices. The revised message may be received at the third device, the revised value of the Terminal Endpoint Identifier field of the received revised message recovered, and a communications link and/or device to which the revised message pertains identified based on the recovered revised value of the Terminal Endpoint Identifier field, preferably in conjunction with a value in a Command/Response field in the received revised message.

摘要翻译： 在第二设备处从第一设备接收到性能报告消息或其他消息。 修改接收到的消息，使得消息中的终端终端标识符字段的值根据预定变换被修改，例如通过递增终端端点标识符字段中的值。 修改的消息然后从第二设备发送到第三设备。 第一，第二和第三设备可以包括无线通信网络的设备，诸如无线电头和/或控制部分（COP）。 该消息优选地通过连接第一和第二设备的第一T1链路接收，并且经修改的消息优选地通过连接第二和第三设备的第二T1链路传输。 可以在第三设备处接收修改的消息，恢复接收到的修改消息的终端端点标识符字段的修改值，以及修改的消息所基于的通信链路和/或设备基于恢复的修订值 终端终端标识符字段，优选地与接收到的修改消息中的命令/响应字段中的值相结合。

公开(公告)号：US06226328B1

公开(公告)日：2001-05-01

申请号：US09071712

申请日：1998-05-01

申请人： Pedro A. Assuncao

发明人： Pedro A. Assuncao

IPC分类号： H04B160

CPC分类号： H04N19/40 ,  H04N19/51

摘要： An apparatus for transcoding an input elementary stream is provided. The apparatus includes a variety of components performing functions such as receiving the input elementary stream. A component for separating an input elementary stream into transform coefficients and their associated motion vectors is included. The apparatus also includes components for dequantizing the transform coefficients to form block transform coefficients, and determining a compensation stream using a feedback path. The apparatus combines the compensation stream from the feedback path with the block transform coefficients to form a corrected stream. The correlated stream is reduced to form an output stream having a characteristic data rate different from the characteristic data rate of the input stream. The combination of these components can provide a resultant digital video signal from the input stream.

摘要翻译： 提供了一种用于对输入基本流进行代码转换的装置。 该装置包括执行诸如接收输入基本流之类的功能的各种组件。 包括用于将输入基本流分离成变换系数及其相关运动矢量的分量。 该装置还包括用于对变换系数进行去量化以形成块变换系数的组件，以及使用反馈路径确定补偿流。 该装置将来自反馈路径的补偿流与块变换系数组合以形成校正流。 相关流被减少以形成具有与输入流的特征数据速率不同的特征数据速率的输出流。 这些组件的组合可以从输入流提供合成的数字视频信号。

公开(公告)号：US06490322B2

公开(公告)日：2002-12-03

申请号：US09124179

申请日：1998-07-28

申请人： Bradford H. Needham ,  Daniel A. Teibel

发明人： Bradford H. Needham ,  Daniel A. Teibel

IPC分类号： H04B160

CPC分类号： G06F3/0425 ,  G06F3/1454 ,  G09G2320/103

摘要： A method for managing a frame of data includes capturing the frame of data from an image at a location. It is determined whether the image is a new image. The frame of data is displayed if the image is the new image.

摘要翻译： 用于管理数据帧的方法包括从位置处的图像捕获数据帧。 确定图像是否是新图像。 如果图像是新图像，则显示数据帧。

公开(公告)号：US06321065B1

公开(公告)日：2001-11-20

申请号：US09183406

申请日：1998-10-30

申请人： Donald C. Wilcoxson ,  Eldad Perahia

发明人： Donald C. Wilcoxson ,  Eldad Perahia

IPC分类号： H04B160

CPC分类号： H04B7/18543

摘要： The present invention provides an open-loop method for determining uplink transmission power in a satellite communication system 200 that compensates for antenna pointing error attenuation and for rain attenuation. Satellite downlink signal 208 attenuation is measured. Antenna pointing information is then used in conjunction with antenna gain pattern information 400 to determine antenna pointing error attenuation. The measured downlink attenuation and antenna pointing error attenuation are then used to determine the amount of rain attenuation on the downlink 208. The downlink attenuation information is then used to determine the amount of uplink 216 attenuation to be expected. Uplink transmission power levels are then adjusted accordingly to overcome the expected uplink 216 attenuation.

摘要翻译： 本发明提供一种用于确定卫星通信系统200中的上行链路发射功率的开环方法，其补偿天线指向误差衰减和雨衰。 测量卫星下行链路信号208的衰减。 然后天线指向信息与天线增益模式信息400结合使用，以确定天线指向误差衰减。 然后，测量的下行链路衰减和天线指向误差衰减用于确定下行链路208上的雨衰的量。然后使用下行链路衰减信息来确定预期的上行链路216衰减的量。 然后相应地调整上行链路传输功率电平以克服预期的上行链路216衰减。