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1.发明授权Multiple satellite repeater capacity loading with multiple spread spectrum gateway antennas 失效多个卫星中继器容量加载多个扩频网关天线
公开(公告)号：US5592481A
公开(公告)日：1997-01-07
申请号：US465972
申请日：1995-06-06
CPC分类号： H04B7/18541 , H04B7/18534 , H04B7/18539
摘要： A communication system (10), and a method executed by same, for allocating communications traffic through a plurality of satellites (12) of a constellation of low earth orbit satellites. Each of the plurality of satellites is oriented, at any given time when in view of a ground station (18), at a particular elevation angle. The method comprises the steps of: (a) providing each of the plurality of satellites with a receiver for receiving communication links from the ground station and a transmitter for transmitting communication links to user terminals; (b) in response to a request for service, determining if a highest elevation angle satellite can be assigned a new communications link; (c) if yes, assigning a new communication link to the highest elevation angle satellite; (d) if no, determining if a second highest elevation angle satellite can be assigned a new communications link; and (e) if yes, assigning a new communication link to the second highest elevation angle satellite. A number of different criteria can be employed in determining if a satellite can be assigned a new communication link, including: determining if the associated satellite has already been assigned a predetermined maximum number of communication links; and determining if the associated satellite, or a particular beam, is transmitting at or near to a power level that corresponds to a maximum peak flux density at the surface of the earth. Each of the steps of assigning is preferably accomplished such that the communication link is simultaneously established through at least two of the satellites to provide for diversity reception at a user's terminal (13).
摘要翻译： 一种通信系统（10）及其执行方法，用于通过低地球轨道卫星星座的多个卫星（12）分配通信业务。 在地面站（18）的任何给定时间，多个卫星中的每一个在特定仰角处被定向。 该方法包括以下步骤：（a）向多个卫星中的每一个提供接收机，用于从地面站接收通信链路;以及发射机，用于向用户终端发送通信链路; （b）响应于服务请求，确定是否可以为最高仰角卫星分配新的通信链路; （c）如果是，分配新的通信链路到最高仰角卫星; （d）如果否，则确定是否可以为第二高仰角卫星分配新的通信链路; 和（e）如果是，则向第二高仰角卫星分配新的通信链路。 可以在确定卫星是否可以被分配新的通信链路时使用多种不同的标准，包括：确定相关联的卫星是否已经被分配了预定的最大数量的通信链路; 以及确定相关联的卫星或特定波束是否在与地球表面处的最大峰值通量密度相对应的功率水平处或附近发射。 分配的每个步骤优选地实现为使得通过至少两个卫星同时建立通信链路，以在用户终端（13）处提供分集接收。
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2.发明授权Multiple satellite repeater capacity loading with multiple spread spectrum gateway antennas 失效多个卫星中继器容量加载多个扩频网关天线
公开(公告)号：US5812538A
公开(公告)日：1998-09-22
申请号：US778882
申请日：1997-01-03
CPC分类号： H04B7/18541 , H04B7/18534 , H04B7/18539
摘要： A communication system (10), and a method executed by same, for allocating communications traffic through a plurality of satellites (12) of a constellation of low earth orbit satellites. Each of the plurality of satellites is oriented, at any given time when in view of a ground station (18), at a particular elevation angle. The method comprises the steps of: (a) providing each of the plurality of satellites with a receiver for receiving communication links from the ground station and a transmitter for transmitting communication links to user terminals; (b) in response to a request for service, determining if a highest elevation angle satellite can be assigned a new communications link; (c) if yes, assigning a new communication link to the highest elevation angle satellite; (d) if no, determining if a second highest elevation angle satellite can be assigned a new communications link; and (e) if yes, assigning a new communication link to the second highest elevation angle satellite. A number of different criteria can be employed in determining if a satellite can be assigned a new communication link, including: determining if the associated satellite has already been assigned a predetermined maximum number of communication links; and determining if the associated satellite, or a particular beam, is transmitting at or near to a power level that corresponds to a maximum peak flux density at the surface of the earth. Each of the steps of assigning is preferably accomplished such that the communication link is simultaneously established through at least two of the satellites to provide for diversity reception at a user's terminal (13).
摘要翻译： 一种通信系统（10）及其执行方法，用于通过低地球轨道卫星星座的多个卫星（12）分配通信业务。 在地面站（18）的任何给定时间，多个卫星中的每一个在特定仰角处被定向。 该方法包括以下步骤：（a）向多个卫星中的每一个提供接收机，用于从地面站接收通信链路;以及发射机，用于向用户终端发送通信链路; （b）响应于服务请求，确定是否可以为最高仰角卫星分配新的通信链路; （c）如果是，分配新的通信链路到最高仰角卫星; （d）如果否，则确定是否可以为第二高仰角卫星分配新的通信链路; 和（e）如果是，则向第二高仰角卫星分配新的通信链路。 可以在确定卫星是否可以被分配新的通信链路时使用多种不同的标准，包括：确定相关联的卫星是否已经被分配了预定的最大数量的通信链路; 以及确定相关联的卫星或特定波束是否在与地球表面处的最大峰值通量密度相对应的功率水平处或附近发射。 分配的每个步骤优选地实现为使得通过至少两个卫星同时建立通信链路，以在用户终端（13）处提供分集接收。
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3.发明授权Methods and apparatus for providing user RF exposure monitoring and control in a satellite communications system 失效用于在卫星通信系统中提供用户RF暴露监测和控制的方法和装置
公开(公告)号：US5802445A
公开(公告)日：1998-09-01
申请号：US502151
申请日：1995-07-13
CPC分类号： H04B7/18543 , H04B7/216
摘要： A method and system wherein a system gateway (18) determines, from closed loop power control information, a power density at an antenna (13a) of a user terminal 13. The gateway also maintains a record of a duration of time that the power density exceeds a specified threshold. The gateway determines if an averaged transmitted power density associated with the antenna of the user terminal will equal or exceed at least one of a predetermined threshold level, within a specified period of time, or an absolute threshold level. If the gateway determines that a threshold will probably be exceeded if the call connection is maintained, the gateway terminates the connection prior to a time that the user terminal averaged transmitted power density level equals or exceeds the predetermined or absolute threshold level. A tone or a visual indicator may be employed to warn the user that a current connection or call will be terminated. Provisions are made for allowing predetermined types of calls (e.g., emergency calls) to be made during a cutoff period wherein the user terminal is prohibited from placing further calls. It within the scope of the invention to perform the power density monitoring function also within the user terminal. In this case information may be transferred to the GW over a return link, and majority voting or some other technique can be employed by the GW before terminating the connection. In this case the power density determination made at the GW has priority over that made in the user terminal to prevent a user terminal from intentionally or inadvertently defeating the power density monitoring function.
摘要翻译： 一种方法和系统，其中系统网关（18）从闭环功率控制信息确定用户终端13的天线（13a）处的功率密度。网关还保持持续时间的记录，功率密度 超过规定的阈值。 网关确定与用户终端的天线相关联的平均发射功率密度是否等于或超过预定阈值水平，在指定时间段内或绝对阈值水平中的至少一个。 如果网关确定如果保持呼叫连接可能会超过阈值，则网关在用户终端平均发送功率密度级别等于或超过预定阈值或绝对阈值水平的时间之前终止连接。 可以使用音调或视觉指示器来警告用户当前的连接或呼叫将被终止。 在允许用户终端被禁止进一步呼叫的截止期间进行允许预定类型的呼叫（例如，紧急呼叫）的规定。 在本发明的范围内也可以在用户终端内执行功率密度监测功能。 在这种情况下，信息可以通过返回链路传送到GW，并且在终止连接之前GW可以采用多数表决或其他一些技术。 在这种情况下，在GW处的功率密度确定优先于在用户终端中进行的功率密度确定，以防止用户终端有意或无意地击败功率密度监视功能。
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4.发明授权Method and apparatus providing suppression of system access by use of confidence polygons, volumes and surfaces in a mobile satellite system 有权通过使用移动卫星系统中的置信多边形，体积和表面来提供对系统访问的抑制的方法和装置公开(公告)号：US07995989B2
公开(公告)日：2011-08-09
申请号：US09751765
申请日：2000-12-29
IPC分类号： H04W36/00
CPC分类号： H04W48/04 , H04B7/18513 , H04W84/06 , H04W88/16
摘要： Disclosed are methods and apparatus to control the actions of a user terminal (UT) located at a remote location, possibly far from a gateway (GW), which has an interface to the Public Switched Telephone Network (PSTN) and/or to the Internet. The methods and apparatus provide for operation of a mobile satellite communication system having at least one gateway (GW), at least one user terminal (UT), and a constellation of satellites. The methods and apparatus allow access to the communication satellites by specifying an exclusion zone having a confidence limit (CL) associated therewith. The methods and apparatus selectively provide service to a UT depending on a determined location of the UT relative to the exclusion zone and on an estimated error (E) of the determined UT location, wherein location of the UT is determined by the UT, and transmitted to the GW, or location of the UT is determined by the GW.
摘要翻译： 公开了用于控制位于远离网关（GW）的远程位置的用户终端（UT）的动作的方法和装置，该网关（GW）具有与公共交换电话网（PSTN）和/或因特网 。 所述方法和装置提供具有至少一个网关（GW），至少一个用户终端（UT）和卫星星座的移动卫星通信系统的操作。 所述方法和装置允许通过指定具有与其相关联的置信限（CL）的排除区来访问通信卫星。 所述方法和装置根据所确定的UT相对于所述排除区的位置以及所确定的UT位置的估计误差（E），选择性地向UT提供服务，其中UT的位置由UT确定并被发送 到GW，或UT的位置由GW确定。
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5.发明授权Method for accounting for user terminal connection to a satellite communications system 失效用于与用户终端连接到卫星通信系统的方法
公开(公告)号：US5664006A
公开(公告)日：1997-09-02
申请号：US474443
申请日：1995-06-07
CPC分类号： H04B7/18539
摘要： A method and system for accurately accounting for an amount of satellite communications system resources that are allotted to and utilized by a user terminal on a per call or connection basis. The method accumulates data at periodic intervals during a connection, the data indicating what portion of the overall system resources are utilized on both a forward link (gateway to satellite(s) to user terminal) and on a reverse link (user terminal to satellite(s) to gateway). The usage data can include power levels, data rates, user terminal location, and user terminal type. A Gateway (18) that is assigned to handling the call for the user terminal (13) accumulates the data and subsequently transfers the data over a terrestrial data network (39) to a Ground Operations Control Center (38). The center uses the data to determine an amount to be billed to a service provider associated with a service area that includes the gateway. The center may also uses this data to derive statistical information describing the communications traffic handled by the gateway, and to derive predicted resource allocation and resource scheduling information for the gateway.
摘要翻译： 一种用于准确地计算在每个呼叫或连接基础上分配给用户终端并由用户终端利用的卫星通信系统资源量的方法和系统。 该方法在连接期间以周期性间隔累积数据，指示在前向链路（到卫星到用户终端的网关）和反向链路（用户终端到卫星（用户终端 s）到网关）。 使用数据可以包括功率电平，数据速率，用户终端位置和用户终端类型。 被分配用于处理用户终端（13）的呼叫的网关（18）累积数据，并随后通过地面数据网络（39）将数据传送到地面操作控制中心（38）。 中心使用数据来确定与包括网关的服务区域相关联的服务提供商计费的金额。 中心还可以使用该数据来导出描述由网关处理的通信业务的统计信息，并导出网关的预测资源分配和资源调度信息。
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6.发明授权Satellite communications system having distributed user assignment and resource assignment with terrestrial gateways 失效卫星通信系统具有分布式用户分配和资源分配与地面网关
公开(公告)号：US6067442A
公开(公告)日：2000-05-23
申请号：US819309
申请日：1997-03-18
申请人： Robert A. Wiedeman , Paul A Monte
发明人： Robert A. Wiedeman , Paul A Monte
CPC分类号： H04B7/18545 , H04W48/17 , H04W74/002 , H04W84/06 , H04W88/16
摘要： A satellite communications system (10) includes at least one satellite (12); a system controller (38); a plurality of gateways (18); and at least one user terminal (13) operable for bidirectionally communicating with at least one of the gateways through the at least one satellite. Individual ones of the plurality of gateways are bidirectionally coupled to at least one terrestrial communications system (4) and act to couple the user terminal to the terrestrial communication system through at least one satellite. In accordance with an aspect of this invention, individual ones of the plurality of gateways are operable for receiving an access request from the user terminal, through at least one satellite, and are further operable for notifying the requesting user terminal, through at least one satellite, that the user terminal is one of accepted by the gateway for establishing a communication link and not accepted by the gateway for establishing the communication link. A gateway that does not accept a user terminal can indicate to the user terminal, based at least in part on a determined location of the user terminal, an identification of a gateway to which the user terminal should apply for access or log-in purposes. The system further includes a data network (39) that interconnects the system controller and the plurality of gateways. The data network may be conveyed by and embodied in one of a wired network, a wireless network, and a combination of a wired network and a wireless network.
摘要翻译： 卫星通信系统（10）包括至少一个卫星（12）; 系统控制器（38）; 多个网关（18）; 以及至少一个用户终端（13），其可操作用于通过所述至少一个卫星与所述至少一个所述网关双向通信。 多个网关中的各个网关双向耦合到至少一个地面通信系统（4），并且通过至少一个卫星将用户终端耦合到地面通信系统。 根据本发明的一个方面，多个网关中的各个网关可操作用于通过至少一个卫星从用户终端接收访问请求，并且还可操作用于通过至少一个卫星通知请求用户终端 用户终端是由网关接受建立通信链路而不被网关接受以建立通信链路之一。 不接受用户终端的网关可以至少部分地向用户终端指示用户终端应该申请访问或登录目的的网关的标识。 该系统还包括互连系统控制器和多个网关的数据网络（39）。 数据网络可以由有线网络，无线网络以及有线网络和无线网络的组合中的一个传送并实现。
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公开(公告)号：US6023463A
公开(公告)日：2000-02-08
申请号：US197859
申请日：1998-11-23
CPC分类号： H04B7/18513
摘要： A method is disclosed for operating a first satellite communications system of a type that operates co-frequency with at least one second transmission system, such as a second satellite communications system. The method includes steps, executed during the operation of the first satellite communications system, of measuring at a plurality of locations within a coverage area of the first system an amount of interference resulting at least in part from the at least one second transmission system, the amount of interference being measured over a band of frequencies allocated to the first system; (b) transmitting an indication of the measured interference from each location to a central site; and (c) in accordance with the transmitted indications, assigning at least one user terminal to a sub-band of frequencies within the band of frequencies so as to reduce an amount of interference experienced by the user terminal.
摘要翻译： 公开了一种用于操作与诸如第二卫星通信系统的至少一个第二传输系统进行同频操作的类型的第一卫星通信系统的方法。 该方法包括在第一卫星通信系统的操作期间执行的步骤，在第一系统的覆盖区域内的多个位置处测量至少部分地来自至少一个第二传输系统的干扰量， 在分配给第一系统的频带上测量的干扰量; （b）将所测量的干扰的指示从每个位置发送到中心站点; 以及（c）根据发送的指示，将至少一个用户终端分配给频带内的频率子带，以减少用户终端经历的干扰量。
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公开(公告)号：US5999623A
公开(公告)日：1999-12-07
申请号：US964539
申请日：1997-11-05
CPC分类号： H04H60/15 , H04H60/23 , H04L9/00 , H04L9/083 , H04N21/2347 , H04N21/26613 , H04N21/4405 , H04N7/1675 , H04L2209/601
摘要： Disclosed is a method and apparatus for enabling an authorized receiver station to decrypt encrypted information broadcast by a transmitter station, and for decrypting the information within the authorized receiver station. The method includes steps of storing a predetermined Subscription Key value in the authorized receiver station and, using the predetermined Subscription Key value, generating a Decryption Key value. In a next step the transmitter station broadcasts a signal which includes the encrypted information. After the broadcasted signal is received at the authorized receiver station, the authorized receiver station performs a predefined algorithm. The predefined algorithm uses the generated Decryption Key value to decrypt the encrypted information from the received signal.
摘要翻译： 公开了一种使得授权的接收机台能够解密由发射机台广播的加密信息并且用于解密授权的接收机站内的信息的方法和装置。 该方法包括以下步骤：在授权接收站中存储预定订阅密钥值，并使用预定订阅密钥值生成解密密钥值。 在下一步骤中，发射台广播包括加密信息的信号。 在授权接收站接收到广播信号之后，授权接收机站执行预定义的算法。 预定义的算法使用生成的解密密钥值来从接收到的信号中解密加密信息。
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公开(公告)号：US5915217A
公开(公告)日：1999-06-22
申请号：US905550
申请日：1997-08-04
申请人： Robert A. Wiedeman , Paul A. Monte
发明人： Robert A. Wiedeman , Paul A. Monte
CPC分类号： H04B7/18556 , H04B7/18541
摘要： A wireless telephone system (10) capable of servicing a roaming wireless telephone user (30) includes a satellite (22) communications system consisting of at least one orbiting satellite (22); at least one terrestrial-based gateway (12, 14, 16, 18) having access to a database (20) of users, destination codes (telephone numbers); at least one network coordinating gateway (28) within at least one satellite service area (24); a single network control center (25); and a plurality of terrestrial communications links (e.g. 101). The system (10) operates by effecting communication between a terrestrial wireless telephone end user transceiver apparatus (e.g. 501) and a terrestrial communications link (e.g. 101) via a single relay through a single satellite (22) or a succession of single relay satellites (22) wherein the relay station may be in motion relative to the end user transceiver apparatus (501) and the terrestrial communications link (101). The ground-based gateway (28) effects the ultimate decision on linking in cooperation with the network database to effect hand-off from a first orbiting satellite (22) to a second orbiting satellite (22). The single satellite (22) or preferably a constellation of satellites (22) orbiting near the earth need only translate signals from the gateways (12, 14, 16, 18) to the users (30) and from the users (30) to the gateways (12, 14, 16, 18), without satellite-based control. The gateways (12, 14, 16, 18) are capable of decoding the calls, switching, processing call requests from the end users (30), processing call requests to the end users (30), processing call set-ups, handing off of calls to other satellites (22), and updating databases (20) of users (30) based on information provided by network control (25) and requests from end users (30).
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10.发明授权
公开(公告)号：US5594780A
公开(公告)日：1997-01-14
申请号：US459105
申请日：1995-06-02
申请人： Robert A. Wiedeman , Paul A. Monte
发明人： Robert A. Wiedeman , Paul A. Monte
CPC分类号： H04B7/18556 , H04B7/18541
摘要： A wireless telephone system (10) capable of servicing a roaming wireless telephone user (30) includes a satellite (22) communications system consisting of at least one orbiting satellite (22); at least one terrestrial-based gateway (12, 14, 16, 18) having access to a database (20) of users, destination codes (telephone numbers); at least one network coordinating gateway (28) within at least one satellite service area (24); a single network control center (25); and a plurality of terrestrial communications links (e.g. 101). The system (10) operates by effecting communication between a terrestrial wireless telephone end user transceiver apparatus (e.g. 501) and a terrestrial communications link (e.g. 101) via a single relay through a single satellite (22) or a succession of single relay satellites (22) wherein the relay station may be in motion relative to the end user transceiver apparatus (501) and the terrestrial communications link (101). The ground-based gateway (28) effects the ultimate decision on linking in cooperation with the network database to effect hand-off from a first orbiting satellite (22) to a second orbiting satellite (22). The single satellite (22) or preferably a constellation of satellites (22) orbiting near the earth need only translate signals from the gateways (12, 14, 16, 18) to the users (30) and from the users (30) to the gateways (12, 14, 16, 18), without satellite-based control. The gateways (12, 14, 16, 18) are capable of decoding the calls, switching, processing call requests from the end users (30), processing call requests to the end users (30), processing call set-ups, handing off of calls to other satellites (22), and updating databases (20) of users (30) based on information provided by network control (25) and requests from end users (30).
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