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    • 1. 发明公开
    • 자율적 위성 자동 이득 제어
    • 自主卫星自动增益控制
    • KR1020170129144A
    • 2017-11-24
    • KR1020177026123
    • 2016-03-02
    • 퀄컴 인코포레이티드
    • 휘틀리찰스에드워드
    • H04B7/185G01S19/02
    • G01S19/02H04B7/18543
    • 사용자단말기들과연관된업링크경로이득에서의감소들을어드레싱하기위한방법및 장치가개시된다. 위성의역방향경로는단일주파수채널상에서다수의데이터신호들을수신할수도있고, 여기서다수의데이터신호들의각각은단일주파수채널의고유한시간-주파수서브-채널을점유하고, 다수의사용자단말기들 (UT들) 의대응하는하나로부터발신되고, 그리고대응하는 UT 와연관된사용자장비 (UE) 디바이스들의그룹에동적으로할당된복수의시간슬롯들을포함한다. 역방향경로는단일주파수채널의모든시간-주파수서브-채널들을점유하는모든다수의수신된데이터신호들의결합된전력레벨을결정하고, 그후 결합된전력레벨에적어도부분적으로기초하여역방향경로에서다수의수신된데이터신호들에적용된증폭기이득을조정할수도있다.
    • 公开了一种用于解决与用户终端相关联的上行链路路径增益中的减少的方法和设备。 卫星的反向路径包括多个,并且可以接收数据信号,其中所述多个数据信号中的是在单个频率信道,频率子占用的信道,所述多个用户终端的单个频率信道的唯一的时间(UT 并且多个时隙被动态地分配给与相应的UT相关联的一组用户设备(UE)设备。 反向路径每次在通过确定所接收的数据信号的组合功率电平的反向路径的单一频率信道数为任何数量的占用信道的,至少部分地基于所述功率水平部分合并后的频率子 并可以调整应用于接收到的数据信号的放大器增益。
    • 3. 发明公开
    • 순방향 링크 송신 전력 제어
    • 关于我们
    • KR1020040047979A
    • 2004-06-05
    • KR1020047006230
    • 2002-10-25
    • 퀄컴 인코포레이티드
    • 맬라디더가
    • H04B7/26
    • H04B7/2041H04B7/18543H04W52/283
    • Forward link transmission power to a user terminal in a wireless communications system having a plurality of beams is controlled by identifying the location of a user terminal within one of the plurality of beams, and setting the forward link transmission power in response to the identified user terminal location. Identifying user terminal location may include receiving from the user terminal multiple signal power measurements, such as pilot signal measurements. From these measurements, a difference is calculated between a first of the signal power measurements that corresponds to a home beam and each of the other signal power measurements. If the largest of the calculated differences is greater than a predetermined threshold, it is concluded that the user terminal is within a beam central region. However, if the largest of the calculated differences is less than or equal to the predetermined threshold, then it is concluded that the user terminal is within a beam crossover region.
    • 通过识别多个波束中的一个波束内的用户终端的位置来控制具有多个波束的无线通信系统中的向用户终端的前向链路传输功率,并且响应于所识别的用户终端来设置前向链路传输功率 位置。 识别用户终端位置可以包括从用户终端接收多个信号功率测量,诸如导频信号测量。 根据这些测量结果,计算对应于归属波束的第一信号功率测量结果与其他信号功率测量结果中的每一个之间的差值。 如果所计算的差值中的最大值大于预定阈值,则得出用户终端位于波束中心区域内的结论。 然而,如果计算出的差值中的最大值小于或等于预定阈值,则可以断定用户终端位于波束交叉区域内。
    • 4. 发明公开
    • 위성 이동 통신 시스템의 빔선택 다이버시티 전송 전력제어 방법
    • 用于控制卫星移动通信系统的波束选择多样性传输功率的方法
    • KR1020030033977A
    • 2003-05-01
    • KR1020020064673
    • 2002-10-22
    • 한국전자통신연구원
    • 임채헌임광재김수영이호진
    • H04B7/02
    • H04B7/18534H04W52/40H04B7/18543H04W52/146
    • PURPOSE: A method for controlling beam selection diversity transmission power of a satellite mobile communication system is provided to reduce interference due to multi-beam transmission upon inter-beam soft hand-over, so as to increase the capacity of a downward link and reduce the probability in beam selection failure due to propagation delay and a fast state change of a channel upon beam selection. CONSTITUTION: A satellite network allocates temporary recognition numbers to each active beam included in an active set(S301), and receives a recognition number of main beam using feedback information from a user terminal(S303). The temporary recognition numbers of each active beam are periodically compared with the recognition number of the main beam(S305). Uplink receiving signal quality values of each active beam are compared with a preset threshold(S307). If the recognitions numbers are different each other in the step S305 and the uplink receiving signal quality value of the corresponding active beam is larger than the threshold in the step S307, the corresponding active beam is decided as sub beam at a corresponding cycle(S309). The satellite network cuts off data transmission power of the corresponding beam(S313). If the recognitions numbers are equal each other in the step S305 and the uplink receiving signal quality value of the corresponding active beam is not larger than the threshold in the step S307, the corresponding active beam is decided as main beam at a corresponding cycle(S311). The satellite network maintains data transmission power of the corresponding beam(S315). The satellite network decides whether an ending signal is received from an upper layer(S317). If so, the steps are ended, and if not, the step S303 is returned.
    • 目的:提供一种用于控制卫星移动通信系统的波束选择分集发射功率的方法,以减少在光束间切换时由于多波束传输引起的干扰,从而增加下行链路的容量,并减少 由于传播延迟导致波束选择失败的概率以及波束选择时信道的快速状态变化。 构成:卫星网络向包括在活动集合中的每个活动波束分配临时识别号码(S301),并且使用来自用户终端的反馈信息接收主波束的识别号码(S303)。 周期性地将每个有源波束的临时识别号与主波束的识别号进行比较(S305)。 将每个有源波束的上行链路接收信号质量值与预设阈值进行比较(S307)。 如果步骤S305中的识别号码彼此不同,并且在步骤S307中相应的有源波束的上行链路接收信号质量值大于阈值,则相应的有源波束在相应的周期被确定为子波束(S309) 。 卫星网络切断相应波束的数据传输功率(S313)。 如果步骤S305中的识别号码彼此相等,并且在步骤S307中相应的有源波束的上行链路接收信号质量值不大于阈值,则相应的有源波束被确定为相应周期的主波束(S311 )。 卫星网络保持相应波束的数据传输功率(S315)。 卫星网络决定是否从上层接收到结束信号(S317)。 如果是,则结束步骤,否则返回步骤S303。
    • 7. 发明授权
    • ATC를 포함하는 위성/이동통신 시스템에서 핸드오버를고려한 전력제어 방법
    • 电力控制方法,考虑在含辅助地面部件的陆地移动卫星通信系统中切换
    • KR100829860B1
    • 2008-05-19
    • KR1020060094398
    • 2006-09-27
    • 한국전자통신연구원
    • 김병기안도섭강군석이호진
    • H04B7/26
    • H04B7/18541H04B7/18543Y02D70/122Y02D70/164Y02D70/446
    • 1. 청구범위에 기재된 발명이 속한 기술분야
      본 발명은 ATC(Ancillary Terrestrial Components)를 포함하는 위성/이동통신 시스템에서 핸드오버를 고려한 전력제어 방법에 관한 것임.
      2. 발명이 해결하려고 하는 기술적 과제
      본 발명은 ATC를 포함하는 다중사용자 위성/이동통신 시스템에서 위치정보를 이용한 효율적인 전력제어 및 핸드오버 기법을 적용하여, 원하는 서비스품질(QoS)을 만족하면서 각 사용자의 수신신호대간섭비를 일정하게 유지할 수 있도록 하기 위한, 핸드오버를 고려한 전력제어 방법을 제공하는데 그 목적이 있음.
      3. 발명의 해결방법의 요지
      본 발명은, ATC(Ancillary Terrestrial Components)를 포함하는 위성/이동통신 시스템에서의 전력제어 방법에 있어서, 단말기의 현재 위치정보를 획득하는 단계; 상기 단말기의 현재 전송전력 정보를 획득하는 단계; 및 상기 위치정보를 바탕으로 상기 단말기의 위치를 인지하고, 셀 혹은 빔 가장자리에서 상기 단말기의 속도정보를 측정하여, 상기 속도정보에 의한 이동에 따라 수신 다이버시트를 이용해 상기 현재 전송전력 정보와 '상기 단말기가 존재하는 영역에 중첩되는 시스템들의 전송 전력 동작범위'를 바탕으로 핸드오버를 고려한 전력제어를 수행하는 제1 전력제어 단계를 포함한다.
      4. 발명의 중요한 용도
      본 발명은 ATC를 포함하는 위성 또는 이동통신 시스템 등에 이용됨.
      ATC, 핸드오버, 전력제어, 폐루프 전력제어, 개방루프 전력제어, 왕복지연 보상
    • 提供了考虑在具有辅助地面分量(ATC)的通信系统中的切换的功率控制方法。 功率控制方法包括:a)获取终端的当前位置信息; b)获取终端的当前发送功率信息; 以及c)基于所述位置信息来确认所述终端的位置,测量所述终端在ATC小区或点波束的边界上的速度信息,以及基于当前发射功率信息执行考虑到切换的第一功率控制,以及 通过使用接收分集的速度信息。
    • 9. 发明公开
    • 위성통신시스템에서의 송출전력레벨 자동조절방법
    • 在卫星通信系统中自动调节功率电平的方法
    • KR1020000047177A
    • 2000-07-25
    • KR1019980063970
    • 1998-12-31
    • 주식회사 머큐리
    • 이재학
    • H04B7/15
    • H04B7/18543H04W52/242H04W84/06
    • PURPOSE: A method for adjusting outgoing power levels automatically in the satellite communication system is provided to control so that each base station can adjust outgoing power levels automatically, based on the loss power between a central control station and a communications satellite and a communications satellite and a base station. CONSTITUTION: A network control part of a central control station sets up the operation mode of channel modems as a TTSR(TDM Transmission Slotted-aloha Receive) mode, an NTTR(Not Transmission TDM Receive) mode and an STTR(Slotted-aloha Transmission TDM Receive) mode(ST1). The network control part sends a required TDM signal through a channel modem of the TTSR mode(ST2). The network control part confirms whether the TDM signal is received(ST3). If the TDM signal is received through a channel modem of the NTTR mode, the channel modem generates a receiving power level value of the TDM signal(ST4). The network control part adjusts the output level of the channel modem of the TTSR mode automatically, based on information read from a power level information storage part(ST5).
    • 目的:提供一种在卫星通信系统中自动调整输出功率电平的方法,以便控制每个基站可以基于中央控制站与通信卫星与通信卫星之间的损耗功率自动调整输出功率电平,以及 一个基站。 构成:中央控制站的网络控制部分将信道调制解调器的操作模式设置为TTSR(TDM传输时隙 - aloha接收)模式,NTTR(非传输TDM接收)模式和STTR(Slotted-aloha传输TDM 接收)模式(ST1)。 网络控制部分通过TTSR模式的信道调制解调器发送所需的TDM信号(ST2)。 网络控制部确认是否接收到TDM信号(ST3)。 如果通过NTTR模式的信道调制解调器接收到TDM信号,则信道调制解调器产生TDM信号的接收功率电平值(ST4)。 网络控制部根据从功率电平信息存储部读取的信息,自动地调整TTSR模式的信道调制解调器的输出电平(ST5)。
    • 10. 发明授权
    • 위성통신 시스템의 단말국에서의 오차 보상장치 및 그 방법
    • 卫星通信系统终端误差补偿装置及其方法
    • KR101211474B1
    • 2012-12-12
    • KR1020110064198
    • 2011-06-30
    • 에이피위성 주식회사
    • 이재필
    • H04B7/19
    • H04B7/18513H04B7/18543H04B7/212
    • PURPOSE: An error compensation apparatus in a terminal station and method thereof are provided to accurately maintain synchronization by compensating for clock errors between a control station and the terminal station. CONSTITUTION: An error compensation control unit(20) computes clock errors between a control station and a terminal station based on reference burst which is received through a reception unit. The error compensation control unit controls a transmission timing control module(30) in order to synchronize traffic burst with the reference burst in error compensation time by applying the clock errors to the transmission timing control module. The error compensation control unit controls a reception timing control module(10) in order to synchronize the traffic burst with the reference burst in the error compensation time by applying the clock errors to the reception timing control module. [Reference numerals] (10) Reception timing control module; (20) Error compensation control unit; (30) Transmission timing control module; (AA) Reception unit; (BB) Transmission unit
    • 目的:提供终端中的误差补偿装置及其方法,通过补偿控制站与终端站之间的时钟误差来精确地保持同步。 构成:误差补偿控制单元(20)基于通过接收单元接收的参考脉冲串来计算控制站与终端站之间的时钟误差。 误差补偿控制单元控制发送定时控制模块(30),以通过将时钟误差应用于发送定时控制模块,从而在误差补偿时间内将业务脉冲串与参考脉冲串同步。 误差补偿控制单元控制接收定时控制模块(10),以通过将时钟误差应用于接收定时控制模块来在误差补偿时间内同步业务脉冲串与参考脉冲串。 (附图标记)(10)接收定时控制模块; (20)误差补偿控制单元; (30)传输定时控制模块; (AA)接待单位; (BB)传输单元