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公开(公告)号：US20200052783A1
公开(公告)日：2020-02-13
申请号：US16518524
申请日：2019-07-22
摘要： A method of operating a satellite communication network is disclosed. The network includes a plurality of satellites interconnected by a plurality of satellite-to-satellite communication links. Each of the plurality of satellites is configured to communicate with at least one ground station using respective ground-satellite communication links. The method includes transmitting a routing table to each of the satellites. Each routing table has a list of destination satellites, and defines at least two possible routes leading to it. An alert message identifying a problem communication link is transmitted to a subset of the plurality of satellites. In response to receiving the alert message, subsequent data packets are routed through the communication network by the satellites using their respective routing table to avoid the problem communication link.
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公开(公告)号：US10244407B2
公开(公告)日：2019-03-26
申请号：US15616012
申请日：2017-06-07
发明人： Patrick Tatum
摘要： In one implementation, load balancing within a constellation of communications satellites is performed. Anticipated positions of satellites are determined. Each satellite is configured to provide multiple beams that define a coverage footprint for the satellite. Based on the anticipated positions of the satellites, it is determined that a first coverage footprint for a first satellite provides primary coverage of a high traffic region and portions of the first coverage footprint for the first satellite also will be covered by coverage footprints for other satellites, Based on these determinations, a beam assignments are defined in which a first subset of beams of the first satellite configured to provide coverage of a first portion of the first coverage footprint are inactive and a second subset of beams of the second satellite are active. The second subset of beams of the second satellite provide coverage within the first portion of the first coverage footprint.
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公开(公告)号：US20190075485A1
公开(公告)日：2019-03-07
申请号：US15698011
申请日：2017-09-07
发明人： George Xenakis , Jayesh Patel , Hermon Pon
摘要： In one implementation, congestion in a satellite communications network is managed based on current resource usage information received for a primary satellite servicing a terminal that is requesting to initiate a communications session. The current resource usage information is received within a communications session setup procedure that identifies a type of the communications session being requested by the terminal. Resources for serving the communications session are determined based on the type of the communications session being requested by the terminal. Thereafter, a determination is made as to whether sufficient resources are available at the primary satellite for servicing the communications session. In response to determining that sufficient resources are not available at the primary satellite for servicing the communications session, a congestion mitigation strategy is determined for servicing the communications session and sent to the primary satellite for implementation.
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公开(公告)号：US20180317057A1
公开(公告)日：2018-11-01
申请号：US16028923
申请日：2018-07-06
发明人： Daniel TILLET , Garrett CHANDLER
CPC分类号： H04W4/10 , H04B7/18513 , H04W4/08 , H04W76/45
摘要： In one implementation, a communication device comprising one or more processors is configured to participate in a plurality of talkgroups. The one or more processors are configured to receive a communication transmitted from a satellite constellation indicating that a first priority talkgroup has been assigned for the communication device and to receive one or more signal transmitted from the satellite constellation via a control channel indicating that the first priority talkgroup is active, in response to which the one or more processors may determine that the first priority talkgroup has been assigned for the communication device and that the first priority talkgroup is active. Consequently, the one or more processors may set the communication device to the first priority talkgroup such that the communication device starts receiving communications via the first priority talkgroup.
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公开(公告)号：US10021539B2
公开(公告)日：2018-07-10
申请号：US15407700
申请日：2017-01-17
发明人： Daniel Tillet , Garrett Chandler
CPC分类号： H04W4/10 , H04B7/18513 , H04W4/08 , H04W76/45
摘要： In one implementation, a communication device comprising one or more processors is configured to participate in a plurality of talkgroups. The one or more processors are configured to receive a communication transmitted from a satellite constellation indicating that a first priority talkgroup has been assigned for the communication device and to receive one or more signal transmitted from the satellite constellation via a control channel indicating that the first priority talkgroup is active, in response to which the one or more processors may determine that the first priority talkgroup has been assigned for the communication device and that the first priority talkgroup is active. Consequently, the one or more processors may set the communication device to the first priority talkgroup such that the communication device starts receiving communications via the first priority talkgroup.
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公开(公告)号：US20180184382A1
公开(公告)日：2018-06-28
申请号：US15932187
申请日：2018-02-16
发明人： Jeffrey Francis Bull
CPC分类号： H04W52/243 , H01Q3/2605 , H01Q3/267 , H04B1/123 , H04B1/126 , H04B1/44 , H04B7/086 , H04B7/18517 , H04B7/18519 , H04B17/21 , H04B17/345 , H04W16/28 , H04W52/52
摘要： In one implementation, a wireless communication terminal includes a primary antenna array and a first controller configured to steer a main beam of the primary antenna array in a desired direction. The wireless communication terminal also includes an auxiliary antenna array and a second controller configured to control complex weights to be applied by at least some antenna elements of the auxiliary antenna array to corresponding variants of a second signal received by the at least some auxiliary antenna elements. Furthermore, the wireless communication terminal includes at least one signal combiner configured to combine variants of the second signal received from auxiliary antenna elements into an interfering signal that models interference from a co-located wireless communication terminal and subtract the interfering signal from variants of the first signal received from antenna elements of the principal antenna array to produce an interference mitigated signal.
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公开(公告)号：US20180145408A1
公开(公告)日：2018-05-24
申请号：US15863478
申请日：2018-01-05
摘要： In one implementation, an antenna array has a plurality of antenna element, each of which is configured to apply a phase shift to a signal. A beam steering controller is configured to steer a main beam of the antenna by controlling the phase shifts applied by the antenna elements. In addition, the beam steering controller also is configured to detect a failure of an antenna element and, in response to detecting the failure, disable the failed antenna element and modify the phase shifts applied by remaining ones of the antenna elements.
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公开(公告)号：US09882279B2
公开(公告)日：2018-01-30
申请号：US14494797
申请日：2014-09-24
摘要： In one implementation, an antenna array has a plurality of antenna element, each of which is configured to apply a phase shift to a signal. A beam steering controller is configured to steer a main beam of the antenna by controlling the phase shifts applied by the antenna elements. In addition, the beam steering controller also is configured to detect a failure of an antenna element and, in response to detecting the failure, disable the failed antenna element and modify the phase shifts applied by remaining ones of the antenna elements.
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公开(公告)号：US09807805B2
公开(公告)日：2017-10-31
申请号：US15349184
申请日：2016-11-11
发明人： Garrett Chandler , Daniel Tillet , Josh Miner , Luis Jordan
CPC分类号： H04W76/45 , H04M1/72522 , H04W4/10 , H04W48/16 , H04W76/14
摘要： An instruction to enter a scanning mode may be received at a communication device. The communication device may participate in several talkgroups. A determination may be made that at least one of the talkgroups is active. In response, the communication device may be set to a first active talkgroup. A determination may be made that a predetermined time has passed since the communication device was set to the first active talkgroup. In response, a determination also may be made that at least a second one of the talkgroups, other than the first active talkgroup, is active. In response, the communication device may be set to the second active talkgroup.
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公开(公告)号：US09667335B2
公开(公告)日：2017-05-30
申请号：US14984553
申请日：2015-12-30
发明人： Jeffrey Francis Bull
CPC分类号： H04W52/243 , H01Q3/2605 , H01Q3/267 , H04B1/123 , H04B1/126 , H04B1/44 , H04B7/086 , H04B7/18517 , H04B7/18519 , H04B17/21 , H04B17/345 , H04W16/28 , H04W52/52
摘要： In one implementation, a wireless communication terminal includes a primary antenna array and a first controller configured to steer a main beam of the primary antenna array in a desired direction. The wireless communication terminal also includes an auxiliary antenna array and a second controller configured to control complex weights to be applied by at least some antenna elements of the auxiliary antenna array to corresponding variants of a second signal received by the at least some auxiliary antenna elements. Furthermore, the wireless communication terminal includes at least one signal combiner configured to combine variants of the second signal received from auxiliary antenna elements into an interfering signal that models interference from a co-located wireless communication terminal and subtract the interfering signal from variants of the first signal received from antenna elements of the principal antenna array to produce an interference mitigated signal.
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