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1. 发明授权

US09621204B2 Apparatus and method for burst signal detection 有权
公开(公告)号：US09621204B2
公开(公告)日：2017-04-11
申请号：US15081505
申请日：2016-03-25
申请人： VT IDIRECT, INC.
发明人： Ronggang Qi , Sahana Raghunandan
IPC分类号： H04B1/10 , H04B1/7075 , H04B1/7077 , H04B1/709 , H04B7/00 , H04B7/204 , H04B7/26 , H04L25/02 , H04L27/00 , H04L27/227 , H04L7/00
CPC分类号： H04B1/10 , H04B1/70752 , H04B1/7077 , H04B1/709 , H04B7/2048 , H04B7/2125 , H04B7/2656 , H04L5/0053 , H04L7/0041 , H04L25/021 , H04L25/0228 , H04L27/0014 , H04L27/2278 , H04W56/0035
摘要： An apparatus and method for detecting a burst signal. The apparatus includes circuitry that concatenates a predetermined number of samples and transmits the samples to a first programmable memory tap of a predetermined number of programmable memory taps. For each memory tap, a corresponding partial correlation is computed. A normalized sum of all the partial correlations is multiplexed and transmitted to a predetermined number of multipliers. A peak of the burst signal is determined by computing a summation of the complex multiplications of each multiplier, wherein the determined peak corresponds to a start of the burst signal.

2. 发明授权

US09131438B2 Precise time synchronization of network subscribers 有权
标题翻译：网络用户的精确时间同步
公开(公告)号：US09131438B2
公开(公告)日：2015-09-08
申请号：US13877091
申请日：2011-09-28
申请人： Steffen Dittrich , Harald Karl
发明人： Steffen Dittrich , Harald Karl
IPC分类号： H04W56/00 , H04J3/06 , G04R20/02 , H04B7/212
CPC分类号： H04W56/0015 , G04R20/02 , H04B7/2125 , H04J3/0644 , H04J3/0667
摘要： Simple and robust precise time synchronization of network subscribers is provided by a system having at least one head station with a satellite antenna and a receiving station receiving a satellite signal containing time information. Also included is a station clock having a network connection for the synchronization of the network subscribers using a real time network protocol. An electronic system, arranged in the head station or the station clock, receives the time information from the satellite signal. A bidirectional communication infrastructure connects the head station and the station clock.
摘要翻译：具有至少一个具有卫星天线的头站和接收包含时间信息的卫星信号的接收站的系统提供了网络用户的简单且鲁棒的精确时间同步。还包括具有用于使用实时网络协议的网络用户的同步的网络连接的站时钟。布置在头站或站时钟中的电子系统从卫星信号接收时间信息。双向通信基础设施连接头站和站时钟。

3. 发明授权

US09059780B1 Device and method for nodal multiple access into communications channels 有权
标题翻译：节点多次访问通信信道的设备和方法
公开(公告)号：US09059780B1
公开(公告)日：2015-06-16
申请号：US14257864
申请日：2014-04-21
申请人： The DIRECTV Group, Inc.
发明人： John P. Godwin , Ernest C. Chen
IPC分类号： H04B7/212 , H04J3/06 , H04B1/40
CPC分类号： H04B1/40 , H04B7/2125
摘要： A nodal division multiple access technique for multiple access to a communications channel such as a satellite transponder. The present invention provides multiple access into a communications channel where each accessing site utilizes one signal from a composite amplitude/phase digital signal constellation, such that demodulators receive the composite signal without changes in the system design related to the multiple access operation.
摘要翻译：用于多路访问诸如卫星转发器之类的通信信道的节点多址技术。本发明提供对通信信道的多址访问，其中每个访问站点利用来自复合幅度/相位数字信号星座的一个信号，使得解调器接收复合信号而不改变与多址操作有关的系统设计。

4. 发明申请

US20150162977A1 METHOD AND APPARATUS FOR CONTROLLING SATELLITE COMMUNICATION NETWORK, AND METHOD OF COMMUNICATION BY VSAT CENTRAL STATION 审中-公开
标题翻译：用于控制卫星通信网络的方法和装置以及VSAT中央站的通信方法
公开(公告)号：US20150162977A1
公开(公告)日：2015-06-11
申请号：US14315555
申请日：2014-06-26
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
发明人： Mankyu PARK , Hyun Ha HONG , Deock Gil OH
IPC分类号： H04B7/185 , H04B7/212
CPC分类号： H04B7/18528 , H04B7/18563 , H04B7/2125 , H04L12/4641
摘要： A control method of a satellite communication network controller is provided. The satellite communication network controller registers terminals included in a plurality of satellite communication networks. The satellite communication network controller receives first data transmitted by a first terminal from a first central station included in a first satellite communication network. The satellite communication network controller searches from the terminals, a second terminal which is a destination of the first data. The satellite communication network controller determines a second central station to receive the first data by using registered information of the second terminal. The satellite communication network controller transmits the first data to the second central station. The second central station is included in the second satellite communication network.
摘要翻译：提供了一种卫星通信网络控制器的控制方法。卫星通信网络控制器注册包括在多个卫星通信网络中的终端。卫星通信网络控制器从包括在第一卫星通信网络中的第一中心站接收由第一终端发送的第一数据。卫星通信网络控制器从终端搜索作为第一数据的目的地的第二终端。卫星通信网络控制器通过使用第二终端的注册信息来确定第二中心站来接收第一数据。卫星通信网络控制器将第一数据发送到第二中心站。第二个中心站包含在第二个卫星通信网络中。

5. 发明授权

US09014238B2 Method of and apparatus for synchronization 有权
标题翻译：同步方法和装置
公开(公告)号：US09014238B2
公开(公告)日：2015-04-21
申请号：US12739846
申请日：2008-10-22
申请人： Joni Jantunen , Jarmo Arponen , Iiro Jantunen , Michaël Pelissier , Bertrand Gomez , Jaakko Varteva
发明人： Joni Jantunen , Jarmo Arponen , Iiro Jantunen , Michaël Pelissier , Bertrand Gomez , Jaakko Varteva
IPC分类号： H04B1/38 , H04B1/7183 , H04L1/00 , H04B7/212
CPC分类号： H04B1/7183 , H04B7/2125 , H04L1/0041 , H04L1/0045
摘要： A method and apparatus of synchronizing pulsed wireless communication between a first transceiver and a second transceiver. It includes the steps of transmitting a pulse signal from a first transceiver to a second transceiver; transmitting a reflection signal from the second transceiver to the first transceiver if the transmitted pulse signal is received at the second transceiver within an active reception period of the second transceiver; and detecting the reflection pulse to determine synchronization between the first transceiver and the second transceiver. Embodiments of the invention also relate to an apparatus for carrying out the method. In one embodiment, the reflection signal is generated by a super-regenerative oscillator.
摘要翻译：一种在第一收发器和第二收发器之间同步脉冲无线通信的方法和装置。它包括将脉冲信号从第一收发器发射到第二收发器的步骤; 如果在所述第二收发器的有效接收周期内在所述第二收发器处接收到所发送的脉冲信号，则将反射信号从所述第二收发器发射到所述第一收发器; 以及检测所述反射脉冲以确定所述第一收发器和所述第二收发器之间的同步。本发明的实施例还涉及一种用于执行该方法的装置。在一个实施例中，反射信号由超再生振荡器产生。

6. 发明授权

US08897206B2 Frame timing synchronization in a geostationary satellite system 有权
公开(公告)号：US08897206B2
公开(公告)日：2014-11-25
申请号：US13479094
申请日：2012-05-23
申请人： Udaya R. Bhaskar , Yezdi Antia , Satyajit Roy
发明人： Udaya R. Bhaskar , Yezdi Antia , Satyajit Roy
IPC分类号： H04B7/185
CPC分类号： H04B7/2048 , H04B7/18513 , H04B7/2125 , H04W56/001
摘要： Aspects of the invention provide a system and method to allow inroute frame timing synchronization without the aid of hub signal loopback or satellite ephemeris data. Furthermore, it allows tracking and compensating of the satellite motion to allow multiple remotes to use TDMA on the inroute frequencies, while minimizing the aperture. Two main techniques proposed are CLT and polling based approaches, which are used in combination for an optimum solution. In CLT based approach, hub transmits remote specific timing correction feedback messages on the outroute on as needed basis. In polling based approach, the remotes derive their timing based on a per-beam average delay estimate broadcast by the hub and a measured local delay specific to each outroute stream from a remote. An aspect of the invention uses triangulation method to determine satellite position. Furthermore, an aspect of the invention uses hub burst arrival method instead of polling approach.

7. 发明申请

US20140315507A1 Apparatus and Method for Detecting Co-Channels Signals 有权
标题翻译：用于检测共通道信号的装置和方法
公开(公告)号：US20140315507A1
公开(公告)日：2014-10-23
申请号：US14366205
申请日：2012-12-18
申请人： Anite Finland Oy
发明人： Steven Thompson
IPC分类号： H04W24/08
CPC分类号： A61B19/22 , A61B17/00234 , A61B17/29 , A61B17/320016 , A61B34/70 , A61B34/71 , A61B2017/00367 , A61B2017/0042 , A61B2017/0046 , H04B7/2125 , H04M1/72519 , H04W24/08
摘要： Apparatus and method for recognizing Global System for Mobile communication (GSM) signals are provided. The solution comprises obtaining position and timing information from a satellite positioning system; tuning to a frequency channel with GSM transmission; collecting a group of I/Q samples for the length of 12 GSM frames; performing peak detection using at least two peak detectors over the group of samples wherein the found peak values are the locations of synchronization bursts (SCH). For the found peaks, the timing information, carrier-to-noise ratio, in phase and quadrature values are determined. A group of I/Q samples for the length of 12 or 51 GSM frames are collected. From the found SCH, base station identification code BSIC, frame number and Broadcast Control Channel (BCCH) training sequence are determined. BCCHs corresponding to all SCH are decoded; and transmitting base stations identified.
摘要翻译：提供了用于识别全球移动通信系统（GSM）信号的装置和方法。解决方案包括从卫星定位系统获取位置和定时信息; 调谐到具有GSM传输的频道; 收集一组长度为12个GSM帧的I / Q样本; 在采样组中使用至少两个峰值检测器执行峰值检测，其中发现的峰值是同步脉冲串（SCH）的位置。对于找到的峰值，确定相位和正交值中的定时信息，载波噪声比。收集一组长度为12或51个GSM帧的I / Q采样。从发现的SCH中，确定基站识别码BSIC，帧号和广播控制信道（BCCH）训练序列。对应于所有SCH的BCCH被解码; 并发送识别的基站。

8. 发明申请

US20140254474A1 FRAME TIMING SYNCHRONIZATION IN A GEOSTATIONARY SATELLITE SYSTEM 有权
标题翻译：在地球卫星系统中的帧时序同步
公开(公告)号：US20140254474A1
公开(公告)日：2014-09-11
申请号：US14265356
申请日：2014-04-29
申请人： Hughes Network Systems, LLC
发明人： Udaya BHASKAR , Yezdi ANTIA , Satyajit ROY
IPC分类号： H04B7/204
CPC分类号： H04B7/2048 , H04B7/18513 , H04B7/2125 , H04W56/001
摘要： Aspects of the invention provide a system and method to allow inroute frame timing synchronization without the aid of hub signal loopback or satellite ephemeris data. Furthermore, it allows tracking and compensating of the satellite motion to allow multiple remotes to use TDMA on the inroute frequencies, while minimizing the aperture. Two main techniques proposed are CLT and polling based approaches, which are used in combination for an optimum solution. In CLT based approach, hub transmits remote specific timing correction feedback messages on the outroute on as needed basis. In polling based approach, the remotes derive their timing based on a per-beam average delay estimate broadcast by the hub and a measured local delay specific to each outroute stream from a remote. An aspect of the invention uses triangulation method to determine satellite position. Furthermore, an aspect of the invention uses hub burst arrival method instead of polling approach.
摘要翻译：本发明的方面提供了一种系统和方法，其允许在无需集线器信号环回或卫星星历数据的帮助下进行帧定时同步。此外，它允许跟踪和补偿卫星运动，以允许多个遥控器在最小化孔径的同时使用TDMA在路由频率上。提出的两个主要技术是基于CLT和轮询的方法，它们被组合用于最佳解决方案。在基于CLT的方法中，集线器根据需要在远端传输远程特定定时校正反馈消息。在基于轮询的方法中，遥控器基于由集线器广播的每个波束的平均延迟估计和来自远程的每个外向流特定的测量的本地延迟导出其定时。本发明的一个方面使用三角测量方法来确定卫星位置。此外，本发明的一个方面使用集线器突发到达方法而不是轮询方法。

9. 发明申请

US20130315137A1 FRAME TIMING SYNCHRONIZATION IN A GEOSTATIONARY SATELLITE SYSTEM 有权
标题翻译：在地球卫星系统中的帧时序同步
公开(公告)号：US20130315137A1
公开(公告)日：2013-11-28
申请号：US13479094
申请日：2012-05-23
申请人： Udaya R. Bhaskar , Yezdi Antia , Satyajit Roy
发明人： Udaya R. Bhaskar , Yezdi Antia , Satyajit Roy
IPC分类号： H04B7/19 , H04W56/00 , H04B7/212
CPC分类号： H04B7/2048 , H04B7/18513 , H04B7/2125 , H04W56/001
摘要： Aspects of the invention provide a system and method to allow inroute frame timing synchronization without the aid of hub signal loopback or satellite ephemeris data. Furthermore, it allows tracking and compensating of the satellite motion to allow multiple remotes to use TDMA on the inroute frequencies, while minimizing the aperture. Two main techniques proposed are CLT and polling based approaches, which are used in combination for an optimum solution. In CLT based approach, hub transmits remote specific timing correction feedback messages on the outroute on as needed basis. In polling based approach, the remotes derive their timing based on a per-beam average delay estimate broadcast by the hub and a measured local delay specific to each outroute stream from a remote. An aspect of the invention uses triangulation method to determine satellite position. Furthermore, an aspect of the invention uses hub burst arrival method instead of polling approach.
摘要翻译：本发明的方面提供了一种系统和方法，其允许在无需集线器信号环回或卫星星历数据的帮助下进行帧定时同步。此外，它允许跟踪和补偿卫星运动，以允许多个遥控器在最小化孔径的同时使用TDMA在路由频率上。提出的两个主要技术是基于CLT和轮询的方法，它们被组合用于最佳解决方案。在基于CLT的方法中，集线器根据需要在远端传输远程特定定时校正反馈消息。在基于轮询的方法中，遥控器基于由集线器广播的每个波束的平均延迟估计和来自远程的每个外向流特定的测量的本地延迟导出其定时。本发明的一个方面使用三角测量方法来确定卫星位置。此外，本发明的一个方面使用集线器突发到达方法而不是轮询方法。

10. 发明申请

US20120147939A1 SIGNAL DEMODULATION METHOD AND APPARATUS AND SIGNAL MODULATION METHOD AND APPARATUS IN RETURN LINK OF SATELLITE SYSTEM 失效
标题翻译：卫星系统返回链路信号解调方法及装置及信号调制方法及装置
公开(公告)号：US20120147939A1
公开(公告)日：2012-06-14
申请号：US13314770
申请日：2011-12-08
申请人： Jae-Hee HAN , Pan-Soo Kim , Deock-Gil Oh , Xavier Giraud
发明人： Jae-Hee HAN , Pan-Soo Kim , Deock-Gil Oh , Xavier Giraud
IPC分类号： H04L7/00 , H04L1/00
CPC分类号： H04B7/2125 , H04B7/18589 , H04L7/04 , H04L2027/0024 , H04L2027/0067 , H04L2027/0079 , H04L2027/0095
摘要： A technology for modulating and demodulating a burst signal in a return link of a satellite system, in which the burst signal is modulated and transmitted from a transmission end of the return link and a symbol of the burst signal is identified and demodulated at a receiving end. The method includes estimating symbol timing of a burst received through the return link and synchronizing the estimated symbol timing of the burst to reference symbol timing; synchronizing a location of the timing-synchronized burst having the symbol timing synchronized to a location of a reference burst using a preamble symbol and a post-amble symbol of the timing-synchronized burst; and recovering a carrier of the location-synchronized burst whose location has been synchronized to the location of the reference burst using a pilot symbol of the location-synchronized burst.
摘要翻译：一种用于调制和解调卫星系统的返回链路中的突发信号的技术，其中突发信号从返回链路的发送端被调制和发送，并且在接收端被识别和解调。该方法包括估计通过返回链路接收的脉冲串的符号定时，并将脉冲串的估计符号定时与参考符号定时同步; 使用前导码符号和定时同步脉冲串的后导码符号来将具有与参考突发的位置同步的符号定时的定时同步突发的位置同步; 以及使用位置同步突发的导频符号来恢复其位置已被同步到参考突发的位置的位置同步突发的载波。

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