Method and system for long-range adaptive mobile beam-forming ad-hoc communication system with integrated positioning
First Claim
1. A method of setting up a wireless long range communication network between several communication units each having a Long-range Adaptive Mobile Beam-forming Ad-hoc Communication (LAMBACOM) unit (11) including an array Radio Frequency (RF) transceiver section (15), a spatial phase front analysis section (16), a delay section (18), a beam-former section (17), a RF switching section (13), an antenna element section (12), a positioning system (32), a communication controller (22) and a data link (23), comprising the following steps:
- a. performing a frame-by-frame spatial scan for a phase modulated, coherent code-word from other communication units using spatial analysis of signals from the RF-transceiver section (15) through signal processing based on signals received and without requiring prior location of a source of said signals received;
b. provide beam forming according to a selection of optimum signal to interference ratio via utilizing a digital antenna beam-former (17) with an appropriate coefficient set to optimize signal energy before first received (RX) data are passed through a plurality of delay elements (18a-n) of the delay section (18) for achieving an optimum antenna shape and demodulation of the first received RX data from any direction;
c. calculating spatial angular direction of each received communication message from another communication unit in the wireless long range communication network;
d. measuring time-of-arrival between the communication units based on correlation of a code-word that is included in each communication message in the wireless long range communication network;
e. transmitting a response message to other communication units containing information about time-of-arrival for a decoded message and delay time from the time-of-arrival to the transmission of the response message; and
f. mutually exchanging position information between all communication units in the wireless long range communication network through the same RF transceiver section (15) that is used for positioning.
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Accused Products
Abstract
Method and system for provided a long range, high capacity ad-hoc mobile communication network where a narrow antenna beam formed by a plurality of antenna elements, radio transceivers and digital spatial signal processing is used to provide a high accuracy positioning system integrated into the communication system. The relative positions and directive orientation of all the units in the network is done by mutual exchange of positioning data as an element in the communication protocol in the network.
41 Citations
29 Claims
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1. A method of setting up a wireless long range communication network between several communication units each having a Long-range Adaptive Mobile Beam-forming Ad-hoc Communication (LAMBACOM) unit (11) including an array Radio Frequency (RF) transceiver section (15), a spatial phase front analysis section (16), a delay section (18), a beam-former section (17), a RF switching section (13), an antenna element section (12), a positioning system (32), a communication controller (22) and a data link (23), comprising the following steps:
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a. performing a frame-by-frame spatial scan for a phase modulated, coherent code-word from other communication units using spatial analysis of signals from the RF-transceiver section (15) through signal processing based on signals received and without requiring prior location of a source of said signals received; b. provide beam forming according to a selection of optimum signal to interference ratio via utilizing a digital antenna beam-former (17) with an appropriate coefficient set to optimize signal energy before first received (RX) data are passed through a plurality of delay elements (18a-n) of the delay section (18) for achieving an optimum antenna shape and demodulation of the first received RX data from any direction; c. calculating spatial angular direction of each received communication message from another communication unit in the wireless long range communication network; d. measuring time-of-arrival between the communication units based on correlation of a code-word that is included in each communication message in the wireless long range communication network; e. transmitting a response message to other communication units containing information about time-of-arrival for a decoded message and delay time from the time-of-arrival to the transmission of the response message; and f. mutually exchanging position information between all communication units in the wireless long range communication network through the same RF transceiver section (15) that is used for positioning. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A system for setting up a wireless long range communication network between several communication units, comprising:
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a Long-range Adaptive Mobile Beam-forming Ad-hoc Communication (LAMBACOM) unit (11) including an array Radio Frequency (RF) transceiver section (15), a spatial phase front analysis section (16), a delay section (18), a beam-former section (17), a RF switch section (13), an antenna element section (12) including a plurality of antenna elements (12a-n), a positioning system (32), a communication controller (22) and a data link (23), arranged to the communication units, characterized in that; the communication controller (22) is configured for frame-by-frame spatial analysis of signals from the RF-transceiver section (15) for determining time-of-flight between respective communication units and the direction of a communication unit relative to other communication units through signal processing based on signals received and without requiring prior location of a source of said signals received, providing beam-forming according to a selection of optimum signal-to-interference ratio by providing a digital antenna beam-former (17) with an appropriate coefficient set to optimize signal energy before first RX data are passed through a plurality of delay elements (18a-n) of the delay section (18) for achieving an optimum antenna shape and demodulation of the first received RX data from any direction, and using angular beam-forming information to provide a low latency positioning information for navigation purposes. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A method of setting up a wireless long range communication network between several communication units each having a Long-range Adaptive Mobile Beam-forming Ad-hoc Communication (LAMBACOM) unit (11) including an array Radio Frequency (RF) transceiver section (15), a spatial phase front analysis section (16), a delay section (18), a beam-former section (17), a RF switching section (13), an antenna element section (12), a positioning system (32), a communication controller (22) and a data link (23), comprising the following steps:
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a. performing a frame-by-frame spatial scan for a phase modulated, coherent code-word from other communication units using spatial analysis of signals from the RF-transceiver section (15) through signal processing based on signals received and without requiring prior location of a source of said signals received; b. determining an optimum direction from the code-word before settings are applied to a complete decoding of a frame and updating beam forming for each received code-word; c. calculating spatial angular direction of each received communication message from another communication unit in the wireless long range communication network; d. measuring time-of-arrival between the communication units based on correlation of a code-word that is included in each communication message in the wireless long range communication network; e. transmitting a response message to other communication units containing information about time-of-arrival for a decoded message and delay time from the time-of-arrival to the transmission of the response message; and f. mutually exchanging position information between all communication units in the wireless long range communication network through the same RF transceiver section (15) that is used for positioning.
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Specification