公开(公告)号：US07418263B2

公开(公告)日：2008-08-26

申请号：US11095007

申请日：2005-03-31

Applicant: Santanu Dutta ,  Peter D. Karabinis

Inventor： Santanu Dutta ,  Peter D. Karabinis

IPC: H04Q7/20

CPC classification number: H04B7/18541 ,  H04W24/00 ,  H04W36/14 ,  H04W36/30 ,  H04W84/06

Abstract: A satellite communications system includes a satellite that is configured to wirelessly communicate with radioterminals in a satellite coverage area over a satellite frequency band, and an ancillary terrestrial component that is configured to wirelessly communicate with radioterminals in the satellite coverage area over at least some of the satellite frequency band, to thereby terrestrially reuse at least some of the satellite frequency band. Wireless communications with a radioterminal are handed over from the ancillary terrestrial component to the satellite if the radioterminal transmit power exceeds a threshold, and a received satellite signal quality exceeds a threshold, even though the radioterminal is able to wirelessly communicate with the ancillary terrestrial component. Downlink wireless radiation that is received at the radioterminal from a satellite may be monitored to determine potential interference created by the uplink radiation of the radioterminal due to the terrestrial reuse of at least some of the satellite frequency band.

Abstract translation: 一种卫星通信系统包括配置成通过卫星频带与卫星覆盖区域中的无线电终端进行无线通信的卫星，以及被配置为与卫星覆盖区域中的至少一些无线电通信无线通信的辅助地面组件 卫星频带，从而陆上重用至少一些卫星频带。 如果无线电终端发射功率超过阈值，并且接收的卫星信号质量超过阈值，即使无线电终端能够与辅助地面组件进行无线通信，则具有无线电终端的无线通信将从辅助地面组件切换到卫星。 可以监测从卫星的无线电终端接收的下行链路无线辐射，以确定由于卫星频带的至少一部分的陆地再利用而由无线电终端的上行辐射产生的潜在干扰。

公开(公告)号：US20080182572A1

公开(公告)日：2008-07-31

申请号：US11770063

申请日：2007-06-28

Applicant: Michael Tseytlin ,  Santanu Dutta

Inventor： Michael Tseytlin ,  Santanu Dutta

IPC: H04Q7/20

CPC classification number: H04B7/18591

Abstract: Communications between a terminal and a terrestrial base station are established. The terrestrial base station receives a request to monitor a satellite base station from the terminal. The terrestrial base station grants the request and receives monitoring information for the satellite base station corresponding to the request. Granting of the request may include suspending transmission from the terrestrial base station to the terminal for a period of time sufficient to allow the terminal to request the monitoring information from the satellite base station and receiving monitoring information may include receiving the requested monitoring information at the terrestrial base station via a communications path not including the terminal. Suspending transmission from the terrestrial base station to the terminal may be followed by resuming transmission to the terminal before receiving the monitoring information at the terrestrial base station. The communications path not including the terminal may include a terrestrial Access Service Network Gateway serving the terrestrial base station and a satellite Access Service Network Gateway serving the satellite base station. Handover techniques are also described.

Abstract translation: 建立终端与地面基站之间的通信。 地面基站从终端接收到监视卫星基站的请求。 地面基站授予该请求，并接收对应于该请求的卫星基站的监视信息。 授予请求可以包括暂停从地面基站向终端的传输一段时间，以足以允许终端从卫星基站请求监视信息，并且接收监视信息可以包括在陆地接收请求的监视信息 基站通过不包括终端的通信路径。 在地面基站接收到监视信息之前，可以暂停从地面基站到终端的传输。 不包括终端的通信路径可以包括为地面基站服务的地面接入服务网络网关和为卫星基站服务的卫星接入服务网络网关。 还描述了切换技术。

公开(公告)号：US20070099562A1

公开(公告)日：2007-05-03

申请号：US11562094

申请日：2006-11-21

Applicant: Peter Karabinis ,  Boris Bogatin ,  Brian Deobald ,  Santanu Dutta

Inventor： Peter Karabinis ,  Boris Bogatin ,  Brian Deobald ,  Santanu Dutta

IPC: H04B7/185

CPC classification number: H04W52/42 ,  H04B7/026 ,  H04B7/0491 ,  H04B7/0837 ,  H04B7/0854 ,  H04B7/10 ,  H04B7/18584 ,  H04W52/38

Abstract: Information is transmitted from a radioterminal to a first base station via a first wireless link. A satellite is used to route the information from the first base station to a second base station via second wireless links between the satellite and the first base station and between the satellite and the second base station. At least one of the second wireless links is more spectrally efficient than the first wireless link. Related methods, systems and devices are disclosed.

Abstract translation: 信息通过第一无线链路从无线电终端发送到第一基站。 卫星用于经由卫星与第一基站之间以及卫星与第二基站之间的第二无线链路将信息从第一基站路由到第二基站。 第二无线链路中的至少一个比第一无线链路更具有频谱效率。 公开了相关方法，系统和装置。

公开(公告)号：US20060111056A1

公开(公告)日：2006-05-25

申请号：US11281078

申请日：2005-11-17

Applicant: Santanu Dutta

Inventor： Santanu Dutta

IPC: H04B1/04 ,  H04B7/08 ,  H04B1/06

CPC classification number: H04B7/0695 ,  H01Q3/24 ,  H01Q21/205 ,  H04B7/0608 ,  H04B7/0805 ,  H04B7/082 ,  H04B7/0874 ,  H04B7/088

Abstract: Communications device may include a plurality of antenna elements, an ancillary control receiver, and a primary receiver. The plurality of antenna elements may provide respective fixed beams. The ancillary control receiver may be coupled to each of the antenna elements, and the ancillary control receiver may be configured to measure a signal strength from each of the antenna elements and to select one of the antenna elements responsive to the measured signal strengths. The primary receiver may be configured to receive communications using the selected antenna element. Related methods are also discussed.

Abstract translation: 通信设备可以包括多个天线元件，辅助控制接收器和主接收器。 多个天线元件可以提供相应的固定光束。 辅助控制接收器可以耦合到每个天线元件，并且辅助控制接收器可以被配置为测量来自每个天线元件的信号强度，并且响应于测量的信号强度来选择天线元件之一。 主接收机可以被配置为使用所选择的天线元件接收通信。 还讨论了相关方法。

公开(公告)号：US20050288011A1

公开(公告)日：2005-12-29

申请号：US11167010

申请日：2005-06-24

Applicant: Santanu Dutta

Inventor： Santanu Dutta

IPC: H04B7/185 ,  H04B7/204

CPC classification number: H04B7/18539 ,  H04B7/2041

Abstract: Methods are provided to operate a communications system including a satellite and a satellite gateway. In particular, a feeder link may be provided between the satellite and the satellite gateway over a feeder link frequency band for communication of information between the satellite gateway and the satellite. A service link may be provided between the satellite and at least one radioterminal in a coverage area of the satellite over a service link frequency band. Moreover, the feeder link and service link frequency bands may be different. In addition, a frequency segment of the feeder link may be linearly translated from the feeder link frequency band to the service link frequency band to provide a frequency segment of the service link. Related satellites are also discussed.

Abstract translation: 提供了用于操作包括卫星和卫星网关的通信系统的方法。 具体地，可以通过馈线链路频带在卫星和卫星网关之间提供馈线链路，用于卫星网关和卫星之间的信息通信。 可以在卫星与服务链路频带上的卫星的覆盖区域中的至少一个无线电终端之间提供服务链路。 此外，馈线链路和业务链路频带可能不同。 此外，馈线链路的频段可以从馈线链路频带线性地转换到服务链路频带，以提供服务链路的频率段。 还讨论了相关卫星。

公开(公告)号：US20050170834A1

公开(公告)日：2005-08-04

申请号：US11095007

申请日：2005-03-31

Applicant: Santanu Dutta ,  Peter Karabinis

Inventor： Santanu Dutta ,  Peter Karabinis

IPC: H04B20060101 ,  H04B7/185 ,  H04W24/00 ,  H04W28/04 ,  H04W36/14 ,  H04W36/30 ,  H04W84/06

CPC classification number: H04B7/18541 ,  H04W24/00 ,  H04W36/14 ,  H04W36/30 ,  H04W84/06

Abstract: A satellite communications system includes a satellite that is configured to wirelessly communicate with radioterminals in a satellite coverage area over a satellite frequency band, and an ancillary terrestrial component that is configured to wirelessly communicate with radioterminals in the satellite coverage area over at least some of the satellite frequency band, to thereby terrestrially reuse at least some of the satellite frequency band. Wireless communications with a radioterminal are handed over from the ancillary terrestrial component to the satellite if the radioterminal transmit power exceeds a threshold, and a received satellite signal quality exceeds a threshold, even though the radioterminal is able to wirelessly communicate with the ancillary terrestrial component. Downlink wireless radiation that is received at the radioterminal from a satellite may be monitored to determine potential interference created by the uplink radiation of the radioterminal due to the terrestrial reuse of at least some of the satellite frequency band.

Abstract translation: 一种卫星通信系统包括配置成通过卫星频带与卫星覆盖区域中的无线电终端进行无线通信的卫星，以及被配置为与卫星覆盖区域中的至少一些无线电通信无线通信的辅助地面组件 卫星频带，从而陆上重用至少一些卫星频带。 如果无线电终端发射功率超过阈值，并且接收的卫星信号质量超过阈值，即使无线电终端能够与辅助地面组件进行无线通信，则具有无线电终端的无线通信从辅助地面组件切换到卫星。 可以监测从卫星的无线电终端接收的下行链路无线辐射，以确定由于卫星频带的至少一部分的陆地再利用而由无线电终端的上行辐射产生的潜在干扰。

公开(公告)号：US20050136836A1

公开(公告)日：2005-06-23

申请号：US11036637

申请日：2005-01-14

Applicant: Peter Karabinis ,  Santanu Dutta ,  Gary Churan ,  Dunmin Zheng

Inventor： Peter Karabinis ,  Santanu Dutta ,  Gary Churan ,  Dunmin Zheng

IPC: H04B7/185 ,  H04Q7/20

CPC classification number: H04B7/1851

Abstract: First radio signals are received by a first satellite, the received first radio signals including a desired satellite uplink signal transmitted from a first source using a frequency assigned to the first source and an interfering signal transmitted from a second source using the frequency assigned to the first source. The first radio signals are combined based on a first performance criterion to generate a first output signal. Second radio signals are received by a second satellite, the received second radio signals including a measure of the desired signal. The second radio signals are combined based on a second performance criterion to produce a second output signal. The first and second output signals are combined to generate an estimate of the desired satellite uplink signal.

Abstract translation: 第一无线电信号由第一卫星接收，所接收的第一无线电信号包括使用分配给第一源的频率从第一源发送的期望的卫星上行链路信号和使用分配给第一源的频率从第二源发送的干扰信号 资源。 基于第一性能标准来组合第一无线电信号以产生第一输出信号。 第二无线电信号由第二卫星接收，所接收的第二无线电信号包括所需信号的度量。 基于第二性能标准来组合第二无线电信号以产生第二输出信号。 第一和第二输出信号被组合以产生所需卫星上行链路信号的估计。

公开(公告)号：US20240137109A1

公开(公告)日：2024-04-25

申请号：US18445636

申请日：2023-12-01

Applicant: Santanu Dutta

Inventor： Santanu Dutta

IPC: H04B7/185

CPC classification number: H04B7/18515 ,  H04B7/18513

Abstract: Methods and systems for low earth orbit satellite communications, utilizing fractionated satellites and constellations with large baselines. The latter, combined with spatial multiplexing protocols, provides access to user equipment on the ground with much greater spatial resolution than hitherto possible. Methods include overcoming the problem posed by the round-trip delay of satellite links when adaptive, downlink, beamforming is attempted in Frequency Division Duplex (FDD) systems. Methods include using of uplink and downlink pilot signals which eliminate the need for controlling the physical integrity of the fractionated satellite through an electromechanical servo-control system in space.

公开(公告)号：US08705436B2

公开(公告)日：2014-04-22

申请号：US11669481

申请日：2007-01-31

Applicant: Santanu Dutta ,  Peter D. Karabinis

Inventor： Santanu Dutta ,  Peter D. Karabinis

IPC: H04J3/08 ,  H04B7/185 ,  H04W4/00 ,  H04N7/20

CPC classification number: H04H20/22 ,  H04B7/18563 ,  H04H20/74 ,  H04H40/18

Abstract: Satellite broadcasting methods include providing a cellular satellite communications system configured to transmit information separately to a plurality of different geographic locations defined by a respective plurality of cellular satellite spotbeams, and concurrently transmitting a program signal on a plurality of different spotbeams. The plurality of different spotbeams may include less than a total number of spotbeams of the cellular satellite communications system. The plurality of different spotbeams may be selected adaptively from an available pool of spotbeams based on locations of users requesting the broadcast program signal. Corresponding satellite gateways, broadcast controllers and wireless user terminals are also provided.

Abstract translation: 卫星广播方法包括提供蜂窝式卫星通信系统，其被配置为将信息分别发送到由相应的多个蜂窝卫星点波束定义的多个不同的地理位置，并且同时在多个不同的光束上传送节目信号。 多个不同的光束可以包括小于蜂窝卫星通信系统的光束的总数。 基于请求广播节目信号的用户的位置，可以从可用的光束池自适应地选择多个不同的光束。 还提供对应的卫星网关，广播控制器和无线用户终端。

公开(公告)号：US08411751B2

公开(公告)日：2013-04-02

申请号：US12637774

申请日：2009-12-15

Applicant: Elif Albuz ,  Tarik Arici ,  Robert Jan Schutten ,  Santanu Dutta

Inventor： Elif Albuz ,  Tarik Arici ,  Robert Jan Schutten ,  Santanu Dutta

IPC: H04N7/18

CPC classification number: H04N5/145 ,  H04N7/0127

Abstract: A method includes projecting motion vectors describing a transformation from a previous video frame to a future video frame onto a plane between the previous video frame and the future video frame, detecting potential artifacts at the plane based on an intersection of a cover region and an uncover region on the plane, and analyzing a dissimilarity between a trial video frame and both the previous video frame and the future video frame. The trial video frame is generated between the previous video frame and the future video frame based on a frame rate conversion ratio derived from a source frame rate and a desired frame rate. The method also includes estimating reliability of the projected motion vectors based on the potential artifact detection and the dissimilarity analysis.

Abstract translation: 一种方法包括将描述从先前视频帧到未来视频帧的变换的运动矢量投影到先前视频帧和未来视频帧之间的平面上，基于覆盖区域和发现的交集来检测平面处的潜在伪影 区域，并且分析试验视频帧与先前的视频帧和将来的视频帧之间的不相似性。 基于从源帧率和期望帧速率导出的帧速率转换比，在先前视频帧和未来视频帧之间生成试用视频帧。 该方法还包括基于潜在神经检测和不相似性分析来估计投影运动矢量的可靠性。