公开(公告)号：US20100157880A1

公开(公告)日：2010-06-24

申请号：US12612311

申请日：2009-11-04

申请人： Hee Wook KIM ,  Kunseok Kang ,  Do-Seob Ahn ,  Ho Jin Lee

发明人： Hee Wook KIM ,  Kunseok Kang ,  Do-Seob Ahn ,  Ho Jin Lee

IPC分类号： H04B7/185

CPC分类号： H04B7/18589 ,  H04B7/18545

摘要： Provided is a method of establishing an uplink in a mobile satellite communication system, the method including: receiving a random uplink access signal from terminals included in a coverage of a satellite beam; estimating a location of each of the terminals; calculating an uplink transmission point in time when each of the terminals transmits an uplink signal, based on the estimated location of each of the terminals; transmitting, to each of the terminals, the calculated uplink transmission point in time; and receiving the uplink signal from each of the terminals at the calculated uplink transmission point in time.

摘要翻译： 提供了一种在移动卫星通信系统中建立上行链路的方法，所述方法包括：从包括在卫星波束覆盖范围内的终端接收随机上行接入信号; 估计每个终端的位置; 基于每个终端的估计位置，计算每个终端发送上行链路信号的时间上行链路传输点; 向每个终端发送所计算的上行链路传输点; 并且在所计算的上行链路传输点处接收来自每个终端的上行链路信号。

公开(公告)号：US20100015972A1

公开(公告)日：2010-01-21

申请号：US12445559

申请日：2007-10-17

申请人： Tae Chul Hong ,  Kun Seok Kang ,  Do Seob Ahn ,  Ho Jin Lee

发明人： Tae Chul Hong ,  Kun Seok Kang ,  Do Seob Ahn ,  Ho Jin Lee

IPC分类号： H04W40/00 ,  H04W36/00

CPC分类号： H04B7/18563 ,  H04W36/30 ,  H04W84/06 ,  Y02D70/142 ,  Y02D70/446

摘要： Provided are a method and mobile communication terminal for handover in a mobile communication network including at least one mobile communication base station and a communication satellite. The handover method includes the steps of: (a) calculating a signal power received from a currently communicating mobile communication base station among the at least one mobile communication base station; (b) calculating a signal power received from each of the communication satellite and the at least one mobile communication base station except the base station of step (a); (c) selecting a mobile communication base station having the highest among the calculated signal powers except the signal power received from the communication satellite and the signal power received from the base station of step (a); and (d) when the signal power calculated in step (a) is below a predetermined minimum handover power, a difference between the signal power of the selected mobile communication base station and the signal power calculated in step (a) is equal to or below a first terrestrial handover sensitivity, and there is no other mobile communication base station capable of communicating with the mobile communication terminal, performing handover to the communication satellite.

摘要翻译： 提供了一种用于在包括至少一个移动通信基站和通信卫星的移动通信网络中切换的方法和移动通信终端。 切换方法包括以下步骤：（a）计算在所述至少一个移动通信基站中从当前通信的移动通信基站接收的信号功率; （b）计算从所述通信卫星和除所述步骤（a）的基站之外的所述至少一个移动通信基站中的每一个接收的信号功率; （c）选择除了从通信卫星接收到的信号功率和从步骤（a）的基站接收的信号功率之外的计算的信号功率中具有最高的移动通信基站; 和（d）当在步骤（a）中计算的信号功率低于预定的最小切换功率时，所选择的移动通信基站的信号功率与在步骤（a）中计算的信号功率之间的差等于或低于 第一地面切换灵敏度，并且没有能够与移动通信终端通信的其他移动通信基站，执行到通信卫星的切换。

公开(公告)号：US5721810A

公开(公告)日：1998-02-24

申请号：US586607

申请日：1996-01-16

申请人： Jeung Heon Hahn ,  Hee Sook Mo ,  Ho Jin Lee

发明人： Jeung Heon Hahn ,  Hee Sook Mo ,  Ho Jin Lee

IPC分类号： H04Q9/00 ,  B64G1/24 ,  H04B7/155 ,  G06F17/00

CPC分类号： B64G1/24 ,  B64G2001/247 ,  Y10S706/905 ,  Y10S706/913

摘要： A method of automatically controlling and verifying telecommands in a satellite control system in which a satellite status analyzing/processing unit and a telecommand producing/executing unit are closely connected with each other to share a knowledge base with information regarding the telecommands. The present method comprises the steps of transmitting the telecommands to a satellite for the control thereof, receiving the resultant telemetry from the satellite, analyzing the received telemetry, inferring telemetry values corresponding to the transmitted telecommands from the information in the knowledge base, verifying a telecommand execution status of the satellite on the basis of the analyzed result and inferred telemetry values and producing a control command upon recognizing an abnormal status of the satellite in accordance with the verified result. According to the present invention, an operator needs not check data one by one to determine whether the telecommand execution is normal or not. Therefore, the present invention has the effect of enhancing the performance and reliability of the satellite control system.

摘要翻译： 一种在卫星控制系统中自动控制和验证远程命令的方法，其中卫星状态分析/处理单元和遥控产生/执行单元彼此紧密连接，以便与知识库共享具有关于遥控命令的信息。 本方法包括以下步骤：将卫星发送到卫星进行控制，从卫星接收结果遥测，分析接收到的遥测，从知识库中的信息中推断与所发射的远程命令对应的遥测值，验证遥控 根据分析结果和推测的遥测值对卫星的执行状态，并根据验证结果识别卫星的异常状态时产生控制命令。 根据本发明，操作者不需要逐个检查数据，以确定遥控执行是否正常。 因此，本发明具有提高卫星控制系统的性能和可靠性的效果。