专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

61. 发明申请

US20020187748A1 Method of controlling initial power ramp-up in a CDMA system by using short codes 有权
公开(公告)号：US20020187748A1
公开(公告)日：2002-12-12
申请号：US10210961
申请日：2002-08-02
申请人： InterDigital Technology Corporation
发明人： Fatih M. Ozluturk , Gary R. Lomp
IPC分类号： H04B007/185 , H04Q007/20
CPC分类号： H04W52/36 , H04B1/707 , H04B1/7075 , H04B1/70753 , H04B1/70755 , H04B1/70758 , H04B1/7077 , H04B1/708 , H04B7/2628 , H04B2201/70701 , H04B2201/70702 , H04B2201/70703 , H04B2201/7071 , H04W52/367 , H04W52/50 , H04W52/60
摘要： A method of controlling transmission power during the establishment of a channel in a CDMA communication system utilizes the transmission of a short code from a subscriber unit to a base station during initial power ramp-up. The short code is a sequence for detection by the base station which has a much shorter period than a conventional spreading code. The ramp-up starts from a power level that is lower than the required power level for detection by the base station. The subscriber unit quickly increases transmission power while repeatedly transmitting the short code until the signal is detected by the base station. Once the base station detects the short code, it sends an indication to the subscriber unit to cease increasing transmission power. The use of short codes limits power overshoot and interference to other subscriber units and permits the base station to quickly synchronize to the spreading code used by the subscriber unit.

62. 发明申请

US20020183057A1 Satellite communication system with gateway switch networks 有权
标题翻译：具有网关交换机网络的卫星通信系统
公开(公告)号：US20020183057A1
公开(公告)日：2002-12-05
申请号：US09871075
申请日：2001-05-31
发明人： Michael Thorburn , Craig Ziegler , Stephen C. Holme
IPC分类号： H04B007/185 , H04Q007/20
CPC分类号： H04B7/2045
摘要： A communication system having gateway filter and switching networks in forward and return channels of a frequency reuse communication satellite. The system couples subscriber terminals to the Internet or other terrestrial network by way of one or more gateways. The system cross-straps gateway-to-user beam connectivity provided by the communication satellite to allow full coverage of all user beams with a subset of the gateways having reduced frequency reuse. An exemplary system comprises a communication satellite having a return channel and a forward channel. One or more gateways are coupled to the Internet or other terrestrial network and communicate with subscriber terminals by way of the return and forward channels provided by the satellite. The return and forward channels each comprise a filter and switching network that selectively couple signals between the one or more gateways and the subscriber terminals. The filter and switching networks selectively couples signals between selected gateways and selected subscriber terminals using predetermined beams.
摘要翻译：一种在频率复用通信卫星的前向和后向信道中具有网关过滤器和交换网络的通信系统。系统通过一个或多个网关将用户终端与互联网或其他地面网络相连接。系统交叉绑定由通信卫星提供的网关到用户的波束连接，以允许所有用户波束的全覆盖，网子的子集具有减少的频率重用。示例性系统包括具有返回信道和前向信道的通信卫星。一个或多个网关被耦合到因特网或其他地面网络，并且通过卫星提供的返回和前向信道与用户终端进行通信。返回和前向信道各自包括滤波器和交换网络，其选择性地耦合一个或多个网关与用户终端之间的信号。滤波器和交换网络使用预定的波束选择性地在所选择的网关和选定的用户终端之间耦合信号。

63. 发明申请

US20020173270A1 System and method for uplink power control 有权
标题翻译：用于上行链路功率控制的系统和方法
公开(公告)号：US20020173270A1
公开(公告)日：2002-11-21
申请号：US09867008
申请日：2001-05-29
发明人： Kenneth V. Buer
IPC分类号： H04B007/185
CPC分类号： H04B7/18513
摘要： An uplink power control system and method of the present invention includes a current sensing technique for predicting the P1 dB power compression point. A DC current sensor detects the level of DC current transmitted from a control unit to an antenna unit of the system. The current measurements are analyzed to generate a theoretical prediction of amplifier linearity as the power levels are increased. The change in DC current indicates an inflection point where the amplifier no longer behaves linearly to an increase in RF power. The inflection point is found by determining the various derivatives of the DC current curve. Analyzing the derivatives not only provides an accurate and consistent assessment of the P1 dB compression point, but also provides a prediction of the output power, and thus future performance of the system.
摘要翻译：本发明的上行链路功率控制系统和方法包括用于预测P1dB功率压缩点的电流检测技术。直流电流传感器检测从控制单元发送到系统的天线单元的直流电流的电平。分析电流测量值以产生功率电平增加时放大器线性度的理论预测。直流电流的变化指示放大器不再像RF功率的增加线性地变化的拐点。通过确定直流电流曲线的各种导数来找到拐点。分析衍生物不仅可以提供对P1 dB压缩点的准确和一致的评估，而且可以提供输出功率的预测，从而提供系统未来的性能。

64. 发明申请

US20020173269A1 Doppler correction for a high-speed mobile station in a satellite mobile telephone system 审中-公开
标题翻译：用于卫星移动电话系统中的高速移动站的多普勒校正
公开(公告)号：US20020173269A1
公开(公告)日：2002-11-21
申请号：US09937660
申请日：2001-12-31
发明人： Mark Grayson , Tania Le Goff , Sze-Ching Lu
IPC分类号： H04B007/185
CPC分类号： H04B7/18502 , H04B7/18508 , H04B7/1853
摘要： Doppler-shift correction information broadcast in a satellite mobile telephone system is produced on the assumption that mobile stations (4a, 4b) are stationary or moving slowly. Consequently, a mobile station (4a, 4b) moving at high-speed cannot correct properly for Doppler shift. In order to solve this problem, provision is made for the mobile station (4a, 4b) to know its own position and velocity, as well as that of a satellite (3a, 3b), so that it can tune its transmitter to mimic, from the perspective of the satellite (3a, 3b), a stationary or slowly moving mobile station (4a, 4b).
摘要翻译：在卫星移动电话系统中广播的多普勒频移校正信息是以移动台（4a，4b）静止或缓慢移动为前提的。因此，高速移动的移动站（4a，4b）无法正确地校正多普勒频移。为了解决这个问题，为移动台（4a，4b）提供了自己的位置和速度以及卫星（3a，3b）的位置和速度，使得它可以调谐其发射机以模拟，从卫星（3a，3b）的角度来看，是静止或缓慢移动的移动台（4a，4b）。

65. 发明申请

US20020172166A1 Communications system and method for measuring short-term and long-term channel characteristics 审中-公开
标题翻译：用于测量短期和长期通道特性的通信系统和方法
公开(公告)号：US20020172166A1
公开(公告)日：2002-11-21
申请号：US09814889
申请日：2001-03-22
发明人： Huseyin Arslan , Karl J. Molnar , Gregory E. Bottomley , Ali S. Khayrallah
IPC分类号： H04B007/185
CPC分类号： H04L1/20
摘要： A communications system and method for compensating for an interferer signal in a received signal comprising a radio processor for filtering the received signal, and a demodulator coupled to the radio processor for demodulating the filtered received signal. A channel quality estimator coupled to the demodulator determines a channel characteristic based on instantaneous noise values of the received signal, for controlling the demodulation of the received signal to compensate for the interferer signal responsive to the channel characteristic. Further, where the channel characteristic is a first channel characteristic, the channel quality estimator determines a second channel characteristic based on instantaneous noise values of the received signal and controls demodulation of the received signal to compensate for the interferer signal responsive to the first and the second channel characteristics.
摘要翻译：一种用于补偿接收信号中的干扰信号的通信系统和方法，包括用于对接收到的信号进行滤波的无线电处理器，以及耦合到无线电处理器的解调器，用于解调滤波的接收信号。耦合到解调器的信道质量估计器基于接收信号的瞬时噪声值来确定信道特性，用于响应于信道特性来控制接收信号的解调以补偿干扰信号。此外，在信道特性是第一信道特性的情况下，信道质量估计器基于接收信号的瞬时噪声值来确定第二信道特性，并且控制接收信号的解调以补偿响应于第一和第二信号的干扰信号通道特性。

66. 发明申请

US20020168936A1 Set top box enabled satellite receiver 审中-公开
标题翻译：机顶盒启用卫星接收机
公开(公告)号：US20020168936A1
公开(公告)日：2002-11-14
申请号：US10143859
申请日：2002-05-14
申请人： Gilat Satellite Networks, Ltd.
发明人： Binyamin Zilberstein , Tod Munro Adamson
IPC分类号： H04B007/185
CPC分类号： H04B7/18528
摘要： VSAT networks may support one or more transaction terminals without modification to the transaction terminals. The VSAT indoor unit may include a reverse modem which emulates the local loop of a PSTN. Thus, the VSAT network may be connected directly to the transaction terminal without modification or recertification of the transaction terminal. Alternatively, the VSAT indoor unit may include a wireless LAN. This provides a cost effective interface to support credit, ATM, or other applications in accordance with aspects of the present invention. In this manner, the VSAT local retailer may retrofit existing terminals and/or ATM machines which may render obsolete the retailer's need to have any services from the local phone company. The VSAT indoor unit may also provide the local retailer with telephone access, Internet access, and broadband mass media services such as music and streaming video. This is particularly important in rural areas and in developing countries where a local telephone network is not always as reliable as desired by the retailer.
摘要翻译： VSAT网络可以支持一个或多个交易终端而不修改交易终端。 VSAT室内机可以包括仿真PSTN的本地环路的反向调制解调器。因此，VSAT网络可以直接连接到交易终端，而无需修改或重新认证交易终端。或者，VSAT室内单元可以包括无线LAN。这提供了根据本发明的方面支持信用，ATM或其他应用的成本有效的接口。以这种方式，VSAT本地零售商可以改造现有终端和/或ATM机，这可能使得零售商需要从本地电话公司获得任何服务。 VSAT室内机还可以向本地零售商提供电话接入，因特网接入以及诸如音乐和流视频的宽带大众媒体服务。这在农村地区和发展中国家尤为重要，因为当地电话网络并不总是零售商所希望的那样可靠。

67. 发明申请

US20020118638A1 High bandwidth broadcast system having localized multicast access to broadcast content 审中-公开
标题翻译：具有对广播内容的本地化多播接入的高带宽广播系统
公开(公告)号：US20020118638A1
公开(公告)日：2002-08-29
申请号：US09772958
申请日：2001-01-31
申请人： Starguide Digital Networks, Inc.
发明人： Paul W. Donahue , Jeffrey A. Dankworth , Larry W. Hinderks , Laurence A. Fish , Ian A. Lerner , Thomas C. Ballister , Roswell R. Roberts III
IPC分类号： G01R031/08 , H04B007/185
CPC分类号： H04L61/2038 , H04B7/18595 , H04L12/18 , H04L12/1836 , H04L12/185 , H04L12/1854 , H04L12/1859 , H04L12/189 , H04L29/06 , H04L29/12216 , H04L29/12254 , H04L29/12264 , H04L29/12283 , H04L29/12292 , H04L29/12801 , H04L49/201 , H04L49/351 , H04L49/602 , H04L61/2007 , H04L61/2046 , H04L61/2061 , H04L61/2069 , H04L61/6004 , H04L69/329 , H04Q11/0478
摘要： A method of multicasting digital data to a user accessing an Internet connection is disclosed. The method includes placing digital data that is to be multicast in IP protocol to generate IP digital data. The IP digital data is transmitted from a transmission site to a remote Internet point of presence through a dedicated transmission channel substantially separate from Internet backbone. The dedicated transmission channel may be, for example, a satellite channel. At the remote Internet point of presence, the IP digital data is multicast for delivery to at least one receiving Internet user's apparatus connected to but distal from the remote Internet point of presence.
摘要翻译：公开了一种向接入因特网连接的用户组播数字数据的方法。该方法包括在IP协议中放置要组播的数字数据，以生成IP数字数据。 IP数字数据通过与互联网骨干基本分离的专用传输信道从传输站点传输到远程互联网存在点。专用传输信道可以是例如卫星信道。在远程互联网存在点处，IP数字数据被多播以传送到至少一个接收因特网用户的设备，该设备连接到但远离远程互联网的存在点。

68. 发明申请

US20020116098A1 METHOD, APPARATUS, SYSTEM, AND COMPUTER SOFTWARE PROGRAM PRODUCT FOR DETERMINING POSITION INTEGRITY IN A SYSTEM HAVING A GLOBAL NAVIGATION SATELLITE SYSTEM (GNSS) COMPONENT 有权
标题翻译：用于确定具有全球导航卫星系统（GNSS）组件的系统中的位置完整性的方法，装置，系统和计算机软件程序产品
公开(公告)号：US20020116098A1
公开(公告)日：2002-08-22
申请号：US09790251
申请日：2001-02-21
发明人： James H. Maynard
IPC分类号： H04B007/185
CPC分类号： G01S19/20 , G01S5/0009
摘要： A method is provided for determining position integrity in a system having a Global Navigation Satellite System (GNSS) component, such as, for example, a Global Positioning System (GPS) device. For successive alarm limits, with each alarm limit corresponding to a position integrity level, it is determined whether valid position integrity information is available. At the alarm limit at which valid position integrity information is first available, a corresponding position integrity level is determined. If no valid position integrity information is available for any of the alarm limits, a default position integrity level is then designated. An associated apparatus, system, and computer software program product are also provided.
摘要翻译：提供了一种用于确定具有全球导航卫星系统（GNSS）组件（例如全球定位系统（GPS））设备的系统中的位置完整性的方法。对于连续的报警限制，对于与位置完整性等级对应的每个报警极限，确定有效的位置完整性信息是否可用。在有效位置完整性信息首先可用的报警极限下，确定相应的位置完整性级别。如果没有任何有效的位置完整性信息可用于任何报警限制，则指定默认位置完整性级别。还提供了相关联的设备，系统和计算机软件程序产品。

69. 发明申请

US20020080765A1 Method for outer loop/weighted open loop power control apparatus employed by a base station 有权
标题翻译：基站采用的外环/加权开环功率控制装置的方法
公开(公告)号：US20020080765A1
公开(公告)日：2002-06-27
申请号：US10081809
申请日：2002-02-22
申请人： InterDigital Technology Corporation
发明人： Ariela Zeira , Sung-Hyuk Shin , Steven G. Dick
IPC分类号： H04B007/185
CPC分类号： H04W52/225 , H04W52/12 , H04W52/24
摘要： Outer loop/weighted open loop power control method controls transmission power levels in a spread spectrum time division duplex communication base station. The base station receives a communication including a transmitted power level and measures its received power level. Based in part on the measured power level and the transmitted power level, a path loss estimate is determined. A quality of the path loss estimate is also determined. The transmission power level for a communication from the base station is based in part on weighting the path loss estimate in response to the estimate's quality.
摘要翻译：外环/加权开环功率控制方法控制扩频时分双工通信基站中的发射功率电平。基站接收包括发射功率电平的通信并测量其接收功率电平。部分地基于测量的功率电平和发射功率电平，确定路径损耗估计。路径损耗估计的质量也被确定。来自基站的通信的发射功率电平部分地基于响应于估计的质量对路径损耗估计进行加权。

70. 发明申请

US20020065078A1 Satellite-based multimedia telecommunication method and system 审中-公开
标题翻译：基于卫星的多媒体电信方法和系统
公开(公告)号：US20020065078A1
公开(公告)日：2002-05-30
申请号：US09988636
申请日：2001-11-20
申请人： ALCATEL
发明人： Michel Cohen , Alain Delayre , Anne Henrotte , Denis Rouffet , Joseph Blineau
IPC分类号： H04B007/185
CPC分类号： H04B7/18582
摘要： A non-geosynchronous satellite telecommunication system provides interactive individual connections and each user of the system has a communication terminal including two data sender/receiver systems each of which is able to exchange data with a satellite independently of the other system and which are used alternately in time with the passage of the satellites so that between two changes of satellite one system is active and the other is held in reserve. In this system collective information is broadcast to all the satellites on at least one dedicated carrier which is received by the system held in reserve of each terminal.
摘要翻译：非地球同步卫星电信系统提供交互式单独连接，并且系统的每个用户具有包括两个数据发送器/接收器系统的通信终端，每个数据发送器/接收器系统能够独立于另一个系统与卫星交换数据，卫星通过的时间，卫星一个系统的两个变化之间是活跃的，另一个是保留的。在该系统中，集体信息被广播到至少一个专用载波上的所有卫星，该专用载波由每个终端保留的系统接收。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式