US Patent No: 5,835,857

Number of patents in Portfolio can not be more than 2000

Position determination for reducing unauthorized use of a communication system

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Abstract

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Methods for operating a wireless communications system provided for reducing the use of the system by unauthorized users by establishing the geographical location of selected user, comparing this location with the known locations of authorized users and denying service to the selected user if the selected user's location does not correspond to the known location of authorized users. Seamless hand-over of a user between nodes of the communication system is effected by periodically recomputing a algorithm which determines a preferred node for communication with the user. When the algorithm indicates that another node is preferred, a call initiation handshake is established between the user and the preferred node, while still maintaining communication with the original node. Communication between the user and the first node is not interrupted until the user establishes a communication 'lock' with the second node. Passive intermodulation interference of signals transmitted and received by nodes of a multi-satellite node system is eliminated by using certain of the satellite nodes for transmit-only and other of the satellite nodes for receive-only operation. In another embodiment PIM interference is eliminated by time duplexing the signals transmitted and received by a satellite's antenna. PIM interference is also reduced by assigning unique portions of each transmitter subband and each receiver subband to each of the satellite nodes.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
ATC TECHNOLOGIES, LLCRESTON, VA179

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Otten, David D Redondo Beach, CA 6 802

Cited Art Landscape

Patent Info (Count) # Cites Year
 
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* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (5)
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MOBILE SATELLITE VENTURES, LLP (3)
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UNWIRED PLANET, LLC (2)
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EASTERN IX GROUP LLC (17)
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7,216,109 System and method for reallocating and/or upgrading and/or selling tickets, other event admittance means, goods and/or services 141 2003
7,280,975 System and method for determining and/or transmitting and/or establishing communication with a mobile device user for providing, for example, concessions, tournaments, competitions, matching, reallocating, upgrading, selling tickets, other event admittance means, goods and/or services 105 2005
7,203,665 System and method for interactive messaging and/or allocating and/or upgrading and/or rewarding tickets, other event admittance means, goods and/or services 25 2006
7,343,350 System and method for interactive messaging and/or allocating and/or upgrading and/or rewarding tickets, other event admittance means, goods and/or services 10 2006
7,379,891 System and method for reallocating and/or upgrading and/or selling tickets, other event admittance means, goods and/or services 12 2006
7,415,424 System and method for reallocating and/or upgrading and/or selling tickets, other event admittance means, goods and/or services 34 2006
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7,617,159 System and method for interactive messaging and/or allocating and/or upgrading and/or rewarding tickets, other event admittance means, goods and/or services 6 2007
7,577,619 System method reallocating and/or upgrading and/or selling tickets, other event admittance means, goods and/or services 6 2007
7,577,620 System and method for reallocating and/or upgrading and/or selling tickets, other event admittance means, goods and/or services 23 2007
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7,529,713 System and method for interactive messaging and/or allocating and/or upgrading and/or rewarding tickets, other event admittance means, goods and/or services 9 2008
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ATC Technologies (1)
8,193,975 Iterative antenna beam forming systems/methods 2 2009
 
ATC TECHNOLOGIES, LLC (142)
6,522,865 Hybrid satellite communications system 157 1999
6,892,068 Coordinated satellite-terrestrial frequency reuse 188 2001
6,859,652 Integrated or autonomous system and method of satellite-terrestrial frequency reuse using signal attenuation and/or blockage, dynamic assignment of frequencies and/or hysteresis 177 2001
7,039,400 Systems and methods for monitoring terrestrially reused satellite frequencies to reduce potential interference 73 2002
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6,999,720 Spatial guardbands for terrestrial reuse of satellite frequencies 148 2002
7,181,161 Multi-band/multi-mode satellite radiotelephone communications systems and methods 65 2002
7,062,267 Methods and systems for modifying satellite antenna cell patterns in response to terrestrial reuse of satellite frequencies 83 2002
7,031,702 Additional systems and methods for monitoring terrestrially reused satellite frequencies to reduce potential interference 92 2002
7,006,789 Space-based network architectures for satellite radiotelephone systems 128 2002
* 2003/0068,978 Space-based network architectures for satellite radiotelephone systems 6 2002
* 2003/0054,815 Methods and systems for modifying satellite antenna cell patterns in response to terrestrial reuse of satellite frequencies 6 2002
7,174,127 Data communications systems and methods using different wireless links for inbound and outbound data 63 2002
* 2003/0022,625 Hybrid satellite communications system 17 2002
7,092,708 Systems and methods for increasing capacity and/or quality of service of terrestrial cellular and satellite systems using terrestrial reception of satellite band frequencies 68 2002
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6,937,857 Systems and methods for reducing satellite feeder link bandwidth/carriers in cellular satellite systems 139 2002
7,218,931 Satellite radiotelephone systems providing staggered sectorization for terrestrial reuse of satellite frequencies and related methods and radiotelephone systems 70 2003
7,593,724 Systems and methods for terrestrial reuse of cellular satellite frequency spectrum in a time-division duplex mode 30 2003
7,155,340 Network-assisted global positioning systems, methods and terminals including doppler shift and code phase estimates 70 2004
7,444,170 Co-channel wireless communication methods and systems using nonsymmetrical alphabets 53 2004
7,203,490 Satellite assisted push-to-send radioterminal systems and methods 68 2004
7,113,778 Aggregate radiated power control for multi-band/multi-mode satellite radiotelephone communications systems and methods 70 2004
7,418,236 Extraterrestrial communications systems and methods including ancillary extraterrestrial components 51 2004
6,879,829 SYSTEMS AND METHODS FOR HANDOVER BETWEEN SPACE BASED AND TERRESTRIAL RADIOTERMINAL COMMUNICATIONS, AND FOR MONITORING TERRESTRIALLY REUSED SATELLITE FREQUENCIES AT A RADIOTERMINAL TO REDUCE POTENTIAL INTERFERENCE 156 2004
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7,577,400 Integrated or autonomous system and method of satellite-terrestrial frequency reuse using signal attenuation and/or blockage, dynamic assignment of frequencies and/or hysteresis 35 2004
7,639,981 Apparatus and methods for power control in satellite communications systems with satellite-linked terrestrial stations 24 2004
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8,380,186 Satellite with different size service link antennas and radioterminal communication methods using same 0 2005
7,596,111 Satellite/terrestrial wireless communications systems and methods using disparate channel separation codes 39 2005
7,933,552 Multi-band satellite and/or ancillary terrestrial component radioterminal communications systems and methods with combining operation 4 2005
7,831,251 Integrated or autonomous system and method of satellite-terrestrial frequency reuse using signal attenuation and/or blockage, dynamic assignment of frequencies and/or hysteresis 24 2005
7,636,566 Systems and method with different utilization of satellite frequency bands by a space-based network and an ancillary terrestrial network 27 2005
7,606,590 Satellite/hands-free interlock systems and/or companion devices for radioterminals and related methods 40 2005
7,418,263 Systems and methods for handover between space based and terrestrial radioterminal communications 46 2005
7,453,396 Radioterminals and associated operating methods that alternate transmission of wireless communications and processing of global positioning system signals 48 2005
8,265,549 Satellite communications systems and methods using radiotelephone 3 2005
7,447,501 Systems and methods for monitoring selected terrestrially used satellite frequency signals to reduce potential interference 43 2005
* 2005/0208,890 Systems and methods for monitoring selected terrestrially used satellite frequency signals to reduce potential interference 12 2005
7,603,081 Radiotelephones and operating methods that use a single radio frequency chain and a single baseband processor for space-based and terrestrial communications 29 2005
7,603,117 Systems and methods for terrestrial use of cellular satellite frequency spectrum 29 2005
7,574,206 Systems and methods for reducing satellite feeder link bandwidth/carriers in cellular satellite systems 40 2005
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7,706,746 Integrated or autonomous system and method of satellite-terrestrial frequency reuse using signal attenuation and/or blockage, dynamic assignment of frequencies and/or hysteresis 26 2005
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7,957,694 Satellite-band spectrum utilization for reduced or minimum interference 3 2005
7,437,123 Space-based network architectures for satellite radiotelephone systems 49 2005
7,599,656 Spatial guardbands for terrestrial reuse of satellite frequencies 27 2005
* 2006/0040,659 Spatial guardbands for terrestrial reuse of satellite frequencies 98 2005
7,747,229 Electronic antenna beam steering using ancillary receivers and related methods 23 2005
8,594,704 Location-based broadcast messaging for radioterminal users 2 2005
7,706,826 Aggregate radiated power control for multi-band/multi-mode satellite radiotelephone communications systems and methods 18 2005
7,636,546 Satellite communications systems and methods using diverse polarizations 25 2005
7,738,837 Satellites using inter-satellite links to create indirect feeder link paths 17 2005
7,813,700 Adaptive beam forming with multi-user detection and interference reduction in satellite communication systems 25 2006
RE43137 Filters for combined radiotelephone/GPS terminals 2 2006
7,636,567 Coordinated satellite-terrestrial frequency reuse 27 2006
* 2006/0211,371 Coordinated satellite-terrestrial frequency reuse 49 2006
7,756,490 Methods, radioterminals, and ancillary terrestrial components for communicating using spectrum allocated to another satellite operator 20 2006
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7,620,394 Reusing frequencies of a fixed and/or mobile communications system 30 2006
7,796,986 Modification of transmission values to compensate for interference in a satellite down-link communications 18 2006
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7,627,285 Satellite communications systems and methods with distributed and/or centralized architecture including ground-based beam forming 32 2006
7,634,229 Intra-system and/or inter-system reuse of feeder link frequencies including interference suppression systems and methods 25 2006
7,609,666 Methods and systems providing adaptive feeder links for ground based beam forming and related systems and satellites 37 2006
7,890,098 Staggered sectorization for terrestrial reuse of satellite frequencies 0 2006
RE42261 Wireless communications systems and methods using satellite-linked remote terminal interface subsystems 8 2006
7,593,726 Coordinated satellite-terrestrial frequency reuse 30 2006
7,970,345 Systems and methods of waveform and/or information splitting for wireless transmission of information to one or more radioterminals over a plurality of transmission paths and/or system elements 16 2006
7,907,944 Methods, apparatus and computer program products for joint decoding of access probes in a CDMA communications system 0 2006
7,925,209 Systems and methods for inter-system sharing of satellite communications frequencies within a common footprint 3 2006
8,190,114 Frequency-dependent filtering for wireless communications transmitters 1 2006
7,623,867 Satellite communications apparatus and methods using asymmetrical forward and return link frequency reuse 24 2006
7,831,202 Satellite communications systems and methods using substantially co-located feeder link antennas 16 2006
7,907,893 Integrated or autonomous system and method of satellite-terrestrial frequency reuse using signal attenuation and/or blockage, dynamic assignment of frequencies and/or hysteresis 18 2006
7,623,859 Additional aggregate radiated power control for multi-band/multi-mode satellite radiotelephone communications systems and methods 38 2006
7,421,342 Network-assisted global positioning systems, methods and terminals including doppler shift and code phase estimates 51 2006
8,170,474 Satellite assisted radioterminal communications systems and methods 5 2006
7,979,024 Systems and methods for satellite forward link transmit diversity using orthagonal space coding 11 2007
8,705,436 Adaptive spotbeam broadcasting, systems, methods and devices for high bandwidth content distribution over satellite 1 2007
7,751,823 Systems and methods for controlling a level of interference to a wireless receiver responsive to an activity factor associated with a wireless transmitter 19 2007
8,923,850 Systems and methods for controlling base station sectors to reduce potential interference with low elevation satellites 0 2007
7,593,691 Systems and methods for controlling a level of interference to a wireless receiver responsive to a power level associated with a wireless transmitter 34 2007
9,014,619 Methods and systems for satellite communications employing ground-based beam forming with spatially distributed hybrid matrix amplifiers 0 2007
7,792,069 Systems and methods for terrestrial reuse of cellular satellite frequency spectrum using different channel separation technologies in forward and reverse links 18 2007
8,526,941 Apparatus and methods for mobility management in hybrid terrestrial-satellite mobile communications systems 0 2007
7,801,520 Methods and systems for configuring satellite antenna cell patterns in response to terrestrial use of satellite frequencies 17 2007
7,831,201 Co-channel wireless communication methods and systems using relayed wireless communications 16 2008
8,064,378 Location-based broadcast messaging for radioterminal users 1 2008
8,031,646 Systems, methods and devices for reusing spectrum of another operator 8 2008
8,064,824 Systems and methods for reducing power robbing impact of interference to a satellite 4 2008
7,593,725 Systems and methods for monitoring selected terrestrially used satellite frequency signals to reduce potential interference 29 2008
7,856,211 Broadband wireless communications systems and methods using multiple non-contiguous frequency bands/segments 15 2008
7,696,924 Radioterminals and associated operating methods that transmit position information responsive to change/rate of change of position 22 2008
8,270,898 Satellite-band spectrum utilization for reduced or minimum interference 1 2008
8,050,674 Radioterminals including satellite/hands-free interlocks and related methods 8 2008
7,783,287 Satellite radiotelephone systems, methods, components and devices including gated radiotelephone transmissions to ancillary terrestrial components 18 2008
8,238,818 Satellite communications systems and methods using radiotelephone location-based beamforming 2 2008
7,792,488 Systems and methods for transmitting electromagnetic energy over a wireless channel having sufficiently weak measured signal strength 26 2009
7,978,135 Antenna beam forming systems/methods using unconstrained phase response 4 2009
8,265,637 Systems and methods for modifying antenna radiation patterns of peripheral base stations of a terrestrial network to allow reduced interference 2 2009
7,974,575 Methods of reducing interference including applying weights to provide correction signals and related systems 4 2009
7,970,346 Methods of reducing interference including calculation of weights based on errors and related systems 6 2009
7,890,050 Methods of reducing interference including determination of feeder link signal error and related systems 8 2009
8,045,975 Systems and methods for inter-system sharing of satellite communications frequencies within a common footprint 8 2009
7,796,985 Systems and methods for packing/unpacking satellite service links to/from satellite feeder links 17 2009
8,433,241 Systems, methods and devices for overlaid operations of satellite and terrestrial wireless communications systems 0 2009
8,023,954 Systems and methods for controlling a cellular communications system responsive to a power level associated with a wireless transmitter 8 2009
7,890,097 Systems and methods for monitoring selected terrestrially used satellite frequency signals to reduce potential interference 4 2009
8,285,278 Systems and methods for terrestrial reuse of cellular satellite frequency spectrum in a time-division duplex mode 0 2009
7,899,002 Satellite/terrestrial wireless communications systems and methods using disparate channel separation codes 1 2009
8,369,775 Integrated or autonomous system and method of satellite-terrestrial frequency reuse using signal attenuation and/or blockage, dynamic assignment of frequencies and/or hysteresis 0 2009
8,068,828 Systems and methods for terrestrial reuse of cellular satellite frequency spectrum in a time-division duplex mode 1 2009
8,023,939 Reusing frequencies of a fixed and/or mobile communications system 2 2009
8,073,394 Prediction of uplink interference potential generated by an ancillary terrestrial network and/or radioterminals 1 2009
7,953,373 Prediction of uplink interference potential generated by an ancillary terrestrial network and/or radioterminals 4 2009
7,917,135 Satellite communications apparatus and methods using asymmetrical forward and return link frequency reuse 10 2009
8,369,776 Apparatus and methods for power control in satellite communications systems with satellite-linked terrestrial stations 1 2009
8,078,101 Systems and methods for terrestrial reuse of cellular satellite frequency spectrum in a time-division duplex and/or frequency-division duplex mode 4 2009
8,055,257 Systems and methods with different utilization of satellite frequency bands by a space-based network and an ancillary terrestrial network 8 2009
8,274,925 Retaining traffic channel assignments for satellite terminals to provide lower latency communication services 0 2010
8,520,561 Systems, methods and network components that provide different satellite spot beam return carrier groupings and reuse patterns 0 2010
RE45107 Filters for combined radiotelephone/GPS terminals 0 2010
7,999,735 Radioterminals and associated operating methods that transmit position information responsive to rate of change of position 0 2010
8,249,585 Systems, methods and computer program products for mobility management in hybrid satellite/terrestrial wireless communications systems 1 2010
8,108,004 Co-channel wireless communication methods and systems using relayed wireless communications 3 2010
* 2010/0159,922 SYSTEMS, METHODS AND COMPUTER PROGRAM PRODUCTS FOR MOBILITY MANAGEMENT IN HYBRID SATELLITE/TERRESTRIAL WIRELESS COMMUNICATIONS SYSTEMS 2 2010
8,339,308 Antenna beam forming systems, methods and devices using phase adjusted least squares beam forming 0 2010
8,412,126 Communications systems including adaptive antenna systems and methods for inter-system and intra-system interference reduction 3 2010
8,576,769 Systems and methods for adaptive interference cancellation beamforming 0 2010
8,014,815 Radioterminals including satellite interlocks and related methods 1 2010
8,285,225 Broadband wireless communications systems and methods using multiple non-contiguous frequency bands/segments 1 2010
7,974,619 Systems and methods for mobility management in overlaid mobile communications systems 4 2010
8,655,398 Communications systems and methods including emission detection 0 2011
8,340,592 Radioterminals and operating methods that receive multiple measures of information from multiple sources 0 2011
8,131,293 Systems and methods for mobility management in overlaid mobile communications systems 1 2011
8,145,126 Satellite-band spectrum utilization for reduced or minimum interference 1 2011
8,238,819 Systems and methods for inter-system sharing of satellite communications frequencies within a common footprint 2 2011
9,037,078 Apparatus and methods for power control in satellite communications systems with satellite-linked terrestrial stations 0 2012
 
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8,805,291 Systems, methods, and devices for electronic spectrum management 0 2013
8,780,968 Systems, methods, and devices for electronic spectrum management 0 2013
8,805,292 Systems, methods, and devices for electronic spectrum management for identifying signal-emitting devices 0 2013
8,798,548 Systems, methods, and devices having databases for electronic spectrum management 0 2013
8,750,156 Systems, methods, and devices for electronic spectrum management for identifying open space 0 2013
8,787,836 Systems, methods, and devices having databases and automated reports for electronic spectrum management 0 2013
 
MOTOROLA, INC. (1)
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7,634,234 Prediction of uplink interference potential generated by an ancillary terrestrial network and/or radioterminals 35 2005
7,587,171 Reducing interference in a wireless communications signal in the frequency domain 35 2006
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7,817,967 Communications systems including adaptive antenna systems and methods for inter-system and intra-system interference reduction 29 2006
8,090,041 Systems and methods for forward link closed loop beamforming 1 2007
 
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7,558,568 Systems and methods for modifying antenna radiation patterns of peripheral base stations of a terrestrial network to allow reduced interference 35 2004
 
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