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1.发明授权Method and apparatus for controlling a transmission power threshold of a satellite communication system 有权用于控制卫星通信系统的发射功率阈值的方法和装置公开(公告)号：US06760566B1
公开(公告)日：2004-07-06
申请号：US09596811
申请日：2000-06-19
IPC分类号： H04B7185
CPC分类号： H04B7/18543 , H04B7/18513
摘要： A method and apparatus for closed-loop power threshold leveling for a satellite communication system. An aspect of the present invention includes a plurality of user earth terminals (UET), a satellite and a network control center (NCC). The NCC polls the UETs to obtain power profile information. When polled, the UELTs form power profile responses and send the responses back to the NCC. The NCC forms a power profile database and statistically analyzes the power profile information to determine an uplink power threshold adjustment. The NCC transmits the uplink power threshold adjustment to the satellite, which adjusts an on-board uplink power level threshold in response to the uplink power threshold adjustment. In systems using mutltiple coding levels, the NCC determines uplink power offset values corresponding to the individual coding levels. The NCC delivers the uplink power offset values to the UETs which update their local power offset values.
摘要翻译： 一种用于卫星通信系统的闭环功率阈值调平的方法和装置。 本发明的一个方面包括多个用户接地终端（UET），卫星和网络控制中心（NCC）。 NCC轮询UET以获得电源配置文件信息。 当轮询时，UELT形成权力配置文件响应并将响应发送回NCC。 NCC形成功率配置文件数据库并统计分析功率配置文件信息以确定上行链路功率阈值调整。 NCC向卫星发送上行功率阈值调整，其响应于上行链路功率阈值调整来调整板载上行链路功率电平阈值。 在使用多个编码电平的系统中，NCC确定与各个编码电平对应的上行链路功率偏移值。 NCC将上行链路功率偏移值提供给更新其本地功率偏移值的UET。
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2.发明授权公开(公告)号：US06653975B2
公开(公告)日：2003-11-25
申请号：US09990941
申请日：2001-11-21
IPC分类号： H04B7185
CPC分类号： H04B7/2041
摘要： A method and computer program to configure feeds on a satellite (300, 310, 320) to provide for redundant coverage when a satellite (300, 310, 320) fails. Further, this method and computer program can enable the switching of feeds from commands from a ground station (30) to activate certain feeds and deactivate other feeds when demand for service changes. In addition, this method and computer program allow for repositioning of satellites so that when one satellite fails another satellite may take over its area of coverage by switching active feeds without the need for placing another satellite in orbit.
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3.发明授权Satellite communication apparatus with multiple hub stations providing increased bandwidth to meet service requirements 有权具有多个中心站的卫星通信设备提供增加的带宽以满足业务需求公开(公告)号：US06847817B2
公开(公告)日：2005-01-25
申请号：US10022017
申请日：2001-12-12
CPC分类号： H04B7/18584
摘要： A satellite communication system (10) includes apparatus for exchanging communication data between ground-based user sites (21-24, 41-44 and 51-54) and a ground-based wideband network (60). A communication satellite (30) exchanges user communication data with the user sites. Ground-based hub terminals (27, 35, 47 and 57) exchange the user communication data with the satellite (30) and also exchange the data with the network (60). A communication manager (70) determines the communication requirements between the satellite and the network and identifies more than one hub terminal to exchange user communication data with the satellite in the event that one hub terminal is insufficient to meet the communication requirements.
摘要翻译： 卫星通信系统（10）包括用于在地面用户站点（21-24,41-44和51-54）和基于地面的宽带网络（60）之间交换通信数据的装置。 通信卫星（30）与用户站点交换用户通信数据。 地面集线器终端（27,35,47和57）与卫星（30）交换用户通信数据，并且还与网络（60）交换数据。 通信管理器（70）确定卫星和网络之间的通信要求，并且在一个集线器终端不足以满足通信要求的情况下，识别多个集线器终端与卫星交换用户通信数据。
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公开(公告)号：US07194049B2
公开(公告)日：2007-03-20
申请号：US10271100
申请日：2002-10-15
申请人： Cyrus A. Dhalla , Michael S. Munoz
发明人： Cyrus A. Dhalla , Michael S. Munoz
IPC分类号： H04L27/08
CPC分类号： H03G3/3089
摘要： A digital automatic level control system employs delay elements, which enable information about a signal parameter from the past, present and future to be processed to provide an optimal gain that can be used to level rapidly varying signals, such as bursty signals. As digital time samples of a signal are passed through first and second buffers, first and second accumulators maintain running sums that are related to the sum of the samples presently in the first and second buffers, respectively. The sums in the first and second accumulators represent information about the signal parameter for the future and the past, respectively. By choosing the maximum of these two values, the system can anticipate the beginning of a signal burst, and still have enough delay to compensate the end of a signal burst. In one embodiment of the invention, multiple channel signals can be leveled, either individually or in groups.
摘要翻译： 数字自动电平控制系统采用延迟元件，其使得能够处理关于来自过去，现在和将来的信号参数的信息，以提供可用于对快速变化的信号（例如突发信号）进行等级的最佳增益。 当信号的数字时间采样通过第一和第二缓冲器时，第一和第二累加器分别保持与当前在第一和第二缓冲器中的采样的总和相关的运行和。 第一和第二累加器中的和分别表示关于未来和过去的信号参数的信息。 通过选择这两个值的最大值，系统可以预测信号突发的开始，并且仍然具有足够的延迟来补偿信号突发的结束。 在本发明的一个实施例中，可以单独地或分组地对多个信道信号进行调平。
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5.发明授权Reducing co-channel interference in satellite communications systems by antenna re-pointing 有权通过天线重新指向，减少卫星通信系统中的同频干扰公开(公告)号：US06940452B2
公开(公告)日：2005-09-06
申请号：US10673533
申请日：2003-09-29
摘要： A system and method for increasing the performance of a satellite communication system by using a multivariate analysis approach to optimize the pointing of the boresight of a satellite-mounted antenna. Optimizing the pointing of the boresight of the antenna minimizes sidelobe generation, and thus Co-Channel Interference (CCI) in geographic areas served by the system. By minimizing CCI, the overall system performance of the communication system is optimized. To optimize the pointing of the boresight of the antenna, the overall performance of the satellite communication system is determined, and the boresight of the antenna is iteratively repointed in the direction of increasing system performance until the optimized boresight pointing is determined. Alternatively, the frequency re-use plan of the satellite communication system may be analyzed to determine a high density cell region and the boresight may be pointed to the high density cell region.
摘要翻译： 一种用于通过使用多变量分析方法来提高卫星通信系统的性能以优化卫星天线的视轴的指向的系统和方法。 优化天线视轴的指向可以最大限度地减少旁瓣产生，从而减少系统服务的地理区域中的同频信道干扰（CCI）。 通过最小化CCI，优化了通信系统的整体系统性能。 为了优化天线视轴的指向，确定卫星通信系统的整体性能，并且在增加系统性能的方向上重复地对天线的视轴进行重新定向，直到确定了优化的视轴指向。 或者，可以分析卫星通信系统的频率重用计划以确定高密度小区区域，并且视轴可以指向高密度小区区域。
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6.发明授权Method and system for controlling uplink power in a satellite communication system using error leveling 有权用于使用误差调整在卫星通信系统中控制上行链路功率的方法和系统公开(公告)号：US06430418B1
公开(公告)日：2002-08-06
申请号：US09596344
申请日：2000-06-19
IPC分类号： H04B700
CPC分类号： H04B7/18543 , H04B7/18513
摘要： A method and system for controlling uplink power in a satellite communication system using error leveling is provided. The uplink power control system for a satellite communication system of a preferred embodiment of the present invention comprises a communication satellite (101) and at least one UET (105). The communication satellite (101) includes an error detector (211) and a comparator (215). The UET (105) includes a receiver (206) for receiving an error indicator signal from the comparator (215), and a power profile processor (216) for controlling the transmit power level of the particular chanslot being used by the UET in response to the error indicator. A preferred method for controlling the transmit power level of a particular chanslot assigned to a UET in a satellite communication system in accordance with the present invention includes determining an error count for an uplink data signal received from the UET in the chanslot (403), and comparing the error count to a predetermined error threshold (404). The method further includes generating an error indicator signal for the chanslot in response to the comparison (405), and controlling the transmit power level of the particular chanslot in response to the error indicator (409, 410).
摘要翻译： 提供了一种使用误差校正在卫星通信系统中控制上行链路功率的方法和系统。 本发明优选实施例的用于卫星通信系统的上行链路功率控制系统包括通信卫星（101）和至少一个UET（105）。 通信卫星（101）包括误差检测器（211）和比较器（215）。 UET（105）包括用于从比较器（215）接收错误指示符信号的接收器（206）和用于响应于UET而被UET使用的特定车厢的发射功率电平的功率配置文件处理器（216） 错误指示器。 根据本发明的用于控制分配给卫星通信系统中的UET的特定信道的发射功率电平的优选方法包括确定从信道（403）中的UET接收的上行链路数据信号的误差计数，以及 将误差计数与预定误差阈值进行比较（404）。 所述方法还包括响应于所述比较（405）生成所述信道的错误指示符信号，以及响应于所述错误指示符（409,410）来控制所述特定信道的发射功率电平。
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