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公开(公告)号：US20220094634A1
公开(公告)日：2022-03-24
申请号：US17541703
申请日：2021-12-03
发明人： Tj T. Kwon , Eric J. Loren , William B. Sorsby
摘要： A system may include a mobile ad-hoc network (MANET) including nodes. The nodes may include beacon-based clusterhead (BB-CH) nodes and members. Each of the nodes may be configured to transmit communication data packets and transmit beacons. Each of the nodes may have passive spatial awareness. For each of at least some of the BB-CH nodes having members, a BB-CH node may be configured to compile spatial awareness information of all members of the BB-CH node. The compiled spatial awareness information may include a BB-CH node identification for the BB-CH node, position-location information (PLI) of the BB-CH node, a quantity of the members of the BB-CH node, and a member list including member identifications. For each of the at least some of the BB-CH nodes, the BB-CH node may be configured to broadcast, via efficient flooding, some or all of the compiled spatial awareness information to every connected node.
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公开(公告)号：US12032081B2
公开(公告)日：2024-07-09
申请号：US18134950
申请日：2023-04-14
发明人： William B. Sorsby , Eric J. Loren , Tj T. Kwon
CPC分类号： G01S5/0027 , G01S13/583 , G01S13/62 , H04W56/0015 , H04W56/0035 , H04W56/005
摘要： A system may include a transmitter node and a receiver node. Each node may include a communications interface including at least one antenna element and a controller operatively coupled to the communications interface, the controller including one or more processors. Each node may be time synchronized to apply Doppler corrections to said node's own motions relative to a stationary common inertial reference frame. The stationary common inertial reference frame may be known to the transmitter node and the receiver node prior to the transmitter node transmitting signals to the receiver node and prior to the receiver node receiving the signals from the transmitter node.
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公开(公告)号：US20230305093A1
公开(公告)日：2023-09-28
申请号：US18199562
申请日：2023-05-19
发明人： William B. Sorsby , Eric J. Loren , Tj T. Kwon , James A. Stevens
CPC分类号： G01S5/0027 , H04W56/005 , G01S13/62 , H04W56/0015 , G01S13/583 , H04W56/0035
摘要： A system includes a transmitter node and a receiver node. Each node of the transmitter node and the receiver node are time synchronized to apply Doppler corrections associated with said node's own motions relative to a stationary common inertial reference frame. The stationary common inertial reference frame is known to the transmitter node and the receiver node prior to the transmitter node transmitting a plurality of signals to the receiver node and prior to the receiver node receiving the plurality of signals from the transmitter node. The receiver node performs adaptive digitization of the signals to account for a speed of the platform.
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公开(公告)号：US20230288519A1
公开(公告)日：2023-09-14
申请号：US18196944
申请日：2023-05-12
CPC分类号： G01S5/0027 , G01S13/62 , G01S13/583 , H04W56/0015 , H04W56/0035 , H04W56/005
摘要： A system is disclosed. The system may include a receiver or transmitter node. The receiver or transmitter node may include a communications interface with an antenna element and a controller. The controller may include one or more processors and have information of own node velocity and own node orientation relative to a common reference frame. The receiver or transmitter node may be time synchronized to apply Doppler corrections to signals, the Doppler corrections associated with the receiver or transmitter node's own motions relative to the common reference frame, the Doppler corrections applied using Doppler null steering along Null directions. The receiver node is configured to determine a bearing angle based on the signals based on Doppler null steering; and to determine a range based on two-way time-of-flight based ranging signals.
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5.发明公开公开(公告)号：US20230254791A1
公开(公告)日：2023-08-10
申请号：US18134950
申请日：2023-04-14
发明人： William B. Sorsby , Eric J. Loren , Tj T. Kwon
IPC分类号： H04W56/00
CPC分类号： H04W56/0035 , H04W56/0015 , H04W56/005
摘要： A system may include a transmitter node and a receiver node. Each node may include a communications interface including at least one antenna element and a controller operatively coupled to the communications interface, the controller including one or more processors. Each node may be time synchronized to apply Doppler corrections to said node's own motions relative to a stationary common inertial reference frame. The stationary common inertial reference frame may be known to the transmitter node and the receiver node prior to the transmitter node transmitting signals to the receiver node and prior to the receiver node receiving the signals from the transmitter node.
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公开(公告)号：US11304084B1
公开(公告)日：2022-04-12
申请号：US17079175
申请日：2020-10-23
发明人： Tj T. Kwon , William B. Sorsby , Eric J. Loren
摘要： A communications node of a multi-node communications network is disclosed. In embodiments, the node transmits to its one-hop neighbors (e.g., via beacon signals or regular hello messages) outbound neighbor lists identifying its neighboring clusterhead and gateway nodes only. Similarly, the communications node receives inbound neighbor lists from its one-hop neighbor nodes, including identifiers and node statuses for all clusterhead and gateway nodes that are one-hop neighbors to the sending node. By comparing the received inbound neighbor lists, the communications node determines whether it is on a critical path of the network, e.g., whether the multi-node communications network would be partitioned into disconnected portions without the communications node. Based on the determination, the communications node may transition its node clustering status.
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公开(公告)号：US12050279B2
公开(公告)日：2024-07-30
申请号：US18199808
申请日：2023-05-19
CPC分类号： G01S5/0027 , G01S13/583 , G01S13/62 , H04W56/0015 , H04W56/0035 , H04W56/005
摘要： A system includes at least a transmitting (Tx) and receiving (Rx) node of a non-terrestrial network (NTN) including one or more non-terrestrial nodes (e.g., operating in earth orbit or extra-terrestrial space). Each node may include a communications interface with antenna elements and a controller, which may include one or more processors and have information of own-node velocity and own-node orientation relative to a common reference frame. Each node may be time synchronized to apply Doppler corrections associated with the node's own motions relative to the common reference frame. Based on the Doppler corrections, each node may determine a relative bearing to the other node. The non-terrestrial node is configured for operation on a non-terrestrial platform (e.g., a satellite in earth orbit), which may be an extra-terrestrial platform operating in spaceflight beyond the earth's atmosphere or in association with a non-Earth solar system object.
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公开(公告)号：US20240168120A1
公开(公告)日：2024-05-23
申请号：US18199760
申请日：2023-05-19
发明人： James A. Stevens , Eric J. Loren , William B. Sorsby , Tj T. Kwon
CPC分类号： G01S5/0027 , G01S13/583 , G01S13/62 , H04W56/0015 , H04W56/0035 , H04W56/005
摘要： A system is disclosed for Doppler nulling configured for security. The system may include a receiver or transmitter node. The receiver or transmitter node may include a communications interface with an antenna element and a controller. The controller may include one or more processors and have information of own node velocity and own node orientation relative to a common reference frame. The receiver or transmitter node may be time synchronized to apply Doppler corrections to signals, the Doppler corrections associated with the receiver or transmitter node's own motions relative to the common reference frame, the Doppler corrections applied using Doppler null steering along Null directions based on a protocol. The protocol may include a protocol modulation, such as a modulation of the signals for security purposes.
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9.发明公开公开(公告)号：US20230393229A1
公开(公告)日：2023-12-07
申请号：US18237317
申请日：2023-08-23
发明人： Eric J. Loren , William B. Sorsby , Tj T. Kwon , James A. Stevens , Joseph T. Graf , Steven V. Schatz , Matthew D. Bousselot , Philip D. Dean
CPC分类号： G01S5/0027 , G01S13/62 , G01S13/583 , H04W56/0015 , H04W56/0035 , H04W56/005
摘要： A system may include a transmitter node and a receiver node. Each node may include a communications interface including at least one antenna element and a controller operatively coupled to the communications interface, the controller including one or more processors, wherein the controller of the receiver node has information of own node velocity and own node orientation. The receiver node may be in motion and the transmitter node may be stationary. Each node may be time synchronized to apply Doppler corrections associated with said node's own motions relative to a common reference frame. The common reference frame may be known to the transmitter node and the receiver node prior to the transmitter node transmitting signals to the receiver node and prior to the receiver node receiving the signals from the transmitter node.
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10.发明公开公开(公告)号：US20230379033A1
公开(公告)日：2023-11-23
申请号：US17957881
申请日：2022-09-30
CPC分类号： H04B7/068 , H04L5/0048
摘要： A communications node of a mobile ad hoc network (MANET) or like multi-node network may receive a preamble and/or header portion associated with a resource allocation message (e.g., as opposed to the full message) transmitted by another network node in motion relative to the receiving node. The receiving node determines a receiver-side Doppler nulling direction (e.g., for offsetting Doppler shift associated with the motion of the transmitting node relative to the receiving node) by adjusting a receiving frequency of the preamble and/or header portion through one or more nulling frequencies, each nulling frequency associated with a nulling direction for offsetting Doppler shift due to relative motion in that direction. Based on the determination of a receiver-side Doppler nulling frequency, the receiving node can determine a velocity and direction of the relative motion between the receiving and transmitting nodes.
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