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6324381 |
Method and system for communicating high rate data in a satellite-based communications network
A satellite-based communications system operating at high data rates includes a plurality of communications satellites each having an uplink and a downlink antenna for receiving and transmitting a...
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6320850 |
Satellite communication adaptive control coding
A method for maximizing satellite downlink information rate is disclosed. A ground transmitter (102) applies an outer block code to a data channel, modulates it, and transmits an uplink data stream...
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6310893 |
Method and system for connectionless communication in a cell relay satellite network
A method and system for communicating a packet over a cell relay satellite network, without establishing a connection in the cell relay satellite network, comprises the steps of segmenting the...
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6308044 |
System and method of providing OOOI times of an aircraft
A method for determining the "Out," "Off,". "On," and "In" (OOOI) times for an aircraft, based on parametric data sampled in the aircraft. "Out" means out of the gate, "Off" means off the ground,...
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6301231 |
Satellite communication system with variable rate satellite link diversity
A satellite communication system includes Earth-based terminal and a satellite constellation in non-geosynchronous Earth orbits. When two or more satellites are within range of a first Earth-based...
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6292473 |
Mobile communications terminal for satellite communications system
A mobile communications system transporting messages between mobile terminals and a central control center using a satellite communications system. The central control center and the mobile...
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6282178 |
Paging reception assurance in a multiply registered wireless transceiver
An approach for selecting an asynchronous paging interval involves selecting a set of possible paging schemes for one wireless system; selecting a paging interval for another wireless system that...
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6272315 |
Mobile satellite system/terrestrial wireless system interworking techniques
Methods for switching a mobile between operation in an mobile satellite system mode and a terrestrial wireless mode. When operating in the terrestrial wireless mode, the mobile terminal will...
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6252691 |
Intrasatellite wireless communication
A wireless intrasatellite communication system is disclosed. Satellite telemetry signals are multiplexed, converted into a digital data stream, and processed by an ASIC to form a multiplexed...
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6249677 |
Apparatus and method for delivering key information of a channel request message from a user terminal to a network
An apparatus and method, for use with the satellite-based communications network, for improving the reliability and speed at which communication between a user terminal and the network is...
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6249513 |
Managing inter-satellite connections in a constellation with overlapping orbital planes
A system and method for managing inter-satellite connectivity in the overlapped regions of a satellite constellation having a plurality of overlapping orbital planes. The overlapped regions are...
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6240072 |
Piecewise coherent beamforming for satellite communications
The satellite communication system uses defocused feed arrays to generate a large number of beams that cover a number of regions. The ground gateways are assigned the same frequency spectrum. The...
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6229986 |
Reconfigurable analog channel processor for multibeam satellites
An analog transponder processor for use in a multibeam satellite receiving input beam signals and transmitting output beam signals has an input switch matrix, channel processors, and an output...
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6226491 |
Access control for multi-access satellite communication system
A system and method for restricting access to a satellite repeater transponder (100) utilizes a pseudo-random noise generator (102) to automatically modulate a local oscillator (18) about a nominal...
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6219528 |
Dynamic power control with adaptive reference level
The disclosure describes a method of adjusting a reference level for uplink signal power for use in a dynamic power control system with satellite-based measurements in a satellite communications...
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6208625 |
Method and apparatus for increasing call-handling capacity using a multi-tier satellite network
A system for increasing call-handling capacity employs a multi-tier satellite network which includes one or more geosynchronous (GEO) satellites (12) and non-geosynchronous satellites (14). The GEO...
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6201797 |
High bandwidth delivery and internet access for airborne passengers
A method and a communications system in which a request for data transmitted by an airborne transmitter over a low-bandwidth air-to-ground communication system uplink and received by a ground-based...
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6201961 |
Use of reference phone in point-to-point satellite communication system
A local broadcast mode operation is implemented in a point-to-point satellite communications system (10) by utilizing a terrestrial reference terminal or phone (20) that is located within a desired...
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6201949 |
Multiplexer/demultiplexer structures and methods
A multiplexer/demultiplexer structure is provided which multiplexes multiple channel signals through a common tee of a tee/manifold mulitplexer arrangement. This multiplexing significantly reduces...
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6167263 |
Aerial communications network including a plurality of aerial platforms
A global communications network comprises a plurality of aerial platforms or vehicles deployed at an altitude in or near the stratosphere and permitted to drift in a controlled manner such that...
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6163678 |
Satellite packet terminal and method for transmitting packet data from the same
To carry out smooth data communication even when a radio communication channel with a satellite is in a fault state, it is judged whether the radio communication channel is in a fault state or not,...
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6160797 |
Satellite receiver/router, system, and method of use
This specification discloses a satellite transmission system for transmission of TCP/IP compatible packets from a head end computer through a satellite uplink, an extraterrestrial satellite, a...
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6157624 |
Method and apparatus for linking terminals using private secondary service paths (PSSP) in a satellite communication system
Private Secondary Service Paths (PSSPs) between compatible or non-compatible communication terminals (110, 120) are established using terrestrial stations (130) within a satellite communication...
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6157812 |
System and method for enhanced satellite payload power utilization
Systems and methods for improved use of idle power of each satellite repeater/transponder during low-traffic periods improve the overall link performance in multi-carrier, demand-assigned satellite...
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6157642 |
Coding system and method for low-earth orbit satellite data communication
A data communication system for a constellation of low-Earth orbit (LEO) satellites (13a, 13b, . . . ) that employ Earth-fixed cellular beam management technology is disclosed. The data to be...
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6151308 |
Elevated communication hub and method of operation therefor
A method and apparatus for communicating between wireless communication devices (120, 131, 140) uses a high-altitude communication platform (110) to provide an interface between the devices. The...
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6147980 |
Avionics satellite based data message routing and delivery system
A data message routing and delivery system for an air traffic control system includes a communications network with one or more ground processing nodes, one or more satellite processing nodes, and...
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6141331 |
Selective call receiver with automatic re-registration capability
An SCR (Selective Call Receiver) (16) that operates in a satellite communication system automatically initiates a re-registration procedure when it roams from one message delivery area (10) to...
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6137783 |
System and method for reduced network information handovers
A system and method for reducing or eliminating the transference of mobile terminal mobility management information caused by temporary signal interferences blocking communications is disclosed....
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6115366 |
System for managing space segment usage among broadcast service providers
A system for managing a satellite and a number of broadcast stations, which generate programs for transmission to remote radio receivers on broadcast channels via the satellite, comprises a...
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6108318 |
System and method for data link synchronization
A system and method for improving communication between two user terminals in a telecommunication system is disclosed. When two user terminals, such as in a satellite-based system with a...
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6108519 |
Mobile communications system
A mobile communications system includes a service-providing base station for providing down-link communication to the mobile station to transmit broadcast service data to a mobile station. In a...
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6108538 |
Method and apparatus for dynamically controlling hand-off thresholds in a satellite cellular communication system
In cellular communication systems, hand-offs are performed to maintain links as subscriber units (110) and beams move relative to each other. The hand-off determination procedure (500) is performed...
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6084864 |
Traffic routing for satellite communication system
Methods and apparatus which route, control and manage traffic throughout a Satellite Communication System operating in low Earth orbit are disclosed. Voice, video and data traffic from terrestrial...
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6081710 |
Dynamic traffic allocation for power control in multiple satellite communication systems
A satellite communications system operative with at least one existing terrestrial communication system for carrying traffic is described. The communication system has a plurality of satellites in...
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6072786 |
Method for acquisition of spotbeam beacon frequency within a satellite communications system
A method for acquiring a spotbeam beacon frequency is disclosed. The method comprises a fast synchronization procedure wherein the beacon frequency of the spotbeam is first acquired using a carrier...
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6058135 |
Quasi-optimal receiver for tracking and acquisition of a split spectrum PN GPS C/A signal
A receiver for tracking and acquisition of the split spectrum PN GPS C/A signal constellation from an earth-orbiting satellite for radiolocation includes an RF front end for receiving and...
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6052364 |
CDMA system architecture for satcom terminals
A satellite communication system including a portable satellite terminal is provided which utilizes C/K u -band and spread spectrum technology to drastically reduce the antenna and terminal sizes....
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6044070 |
Remote connection control using a tunneling protocol
A telecommunications system and method for allowing calls to and from mobile terminals to be handled directly by a remote terminal without the need for trunk lines between the remote terminal and...
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6044084 |
Collision detection for packet-switched multiple-path communication system
A method and system for detecting collision of transmitted signals in a random-access, multiple-path communication system utilizes a packet coding arrangement where a transmitting transceiver...
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6041233 |
Method and system for providing global variable data rate connectivity in a satellite-based communications network
A method and system for providing global variable data rate connectivity in a satellite-based communications network includes a plurality of communications satellites for transmitting and receiving...
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6014372 |
Antenna beam congruency system for spacecraft cellular communications system
A spacecraft-based cellular communications system includes a spacecraft with transmit and receive antennas, each of which produces a plurality of spot beams which, together, provide coverage of the...
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5999797 |
Method and apparatus for providing private global networks in a satellite communication system
Private Global Networks (PGNs) between communication terminals (110, 114, 116, 118) are established within a satellite communication system (100). Each PGN provides to its users a network of...
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5995495 |
Method of and system for providing geographically targeted broadcast satellite service
A method of and system for providing local direct broadcast satellite service by transmitting a plurality of local programming packages. The satellite transmits the local programming packages to a...
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5975531 |
High speed teleconference system
A high speed teleconferencing apparatus and method, the apparatus including an encoding unit that encodes and compresses a first digital signal to produce a first compressed encoded signal, a...
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5974032 |
Method and apparatus for adjusting data rate in a synchronous communication system
A method and apparatus are for receiving a portion of a message by a call receiver (2). A radio signal is intercepted (910) which is modulated with a hierarchical signalling protocol having...
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5951709 |
Radio communication system using TDD scheme
The system in this invention is provided with a ground radio channel for performing the radio communication by directly connecting between base stations and mobile stations, and a satellite radio...
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5949766 |
Ground device for communicating with an elevated communication hub and method of operation thereof
A method and apparatus for communicating with a high-altitude communication platform (110) which combines multiple signals from multiple sources into one signal which is sent to a ground device...
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5926467 |
Method and apparatus for doppler based multiple access communication control
A single, simple but multi-moded protocol for implementation on different data transportation Low Earth Orbit (LEO) systems uses a Doppler-Based Multiple Access (DBMA) system to assign transmission...
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5920804 |
Method and apparatus for communications hand-off between multiple satellite systems
A method and apparatus for handing off communications between a primary satellite system (500) and an alternate satellite system (550) determines (602) when a hand-off condition for the primary...
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