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7623487 |
OFDM system and method for supporting a wide range of mobility speeds
A method and apparatus for wireless communication in which groups of expected mobile device mobility speed ranges are established. A first sub-carrier block arrangement for the group having the...
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7620031 |
Method and apparatus for code division switching
Time division multiplexed input signals (i.e., separated into time slots) are spread in each time slot with a destination code. This spreading is applied for destination identification as opposed...
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7606175 |
Extended service set mesh path selection
A system and methods for wireless computing devices to become mesh member nodes within a self-configuring mesh network includes mechanisms for neighbor discovery and sharing of a common topology...
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7605934 |
Method and system for facsimile delivery using dial-up modem pools
A method and system for communicating a facsimile (fax) message over a computer network. A user initiates the sending of the fax to a recipient fax transceiver located outside the user's local-toll...
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7596350 |
Method and system for determining delays between a primary site and diverse site in a satellite communication system
A method and system for determining delays between a primary site and a diverse site in a satellite communication system includes uplinking signal from the primary site and the diverse site. A...
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7587176 |
Mode switching in transceiver of a mobile terminal
A mode switching method in a mobile communication system is provided. The method comprises providing a mode switching start point between an uplink signal and a downlink signal of a transceiver;...
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7536472 |
Systems for distributing data over a computer network and methods for arranging nodes for distribution of data over a computer network
A system and method for propagating a network topology model of a binary tree topology network through the network. The network includes a plurality of nodes, including a root node and at least one...
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7499422 |
Uplink/downlink synchronizing apparatus of mobile communication terminal
An apparatus and method for synchronizing the transmission of uplink signals and reception of downlink signals by a terminal in a mobile communication system is disclosed, the apparatus and method...
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7469152 |
Method and apparatus for an adaptive multiple-input multiple-output (MIMO) wireless communications systems
An adaptive MIMO communications system includes a multifunctional reconfigurable antenna with a selectively alterable effective physical antenna array configuration and radiation/polarization...
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7417965 |
Multiple access spread spectrum switching methodology
A low-cost, low-power, low-complexity, small, high-reliability, robust, seamless satellite communication network is described. The network performs encoding of a user signal at the customer...
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7308230 |
Device and method to locally fill gaps in spotbeam satellite systems with frequency re-use
Systems and methods for transmitting and receiving diverse signals across regions using a minimum of frequency capacity and maintaining compatibility with the heritage system. A system of the...
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7266097 |
Communication method and apparatus
A set of formats and protocols is proposed for a satellite communications system. In these formats, a pilot signal (PS) is inserted after every 25 or 29 data symbols. The formats consist of SCPC...
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7181163 |
Multi-beam satellite communications payload with flexible power allocation
A communications payload configuration comprising a multi-port amplifier that incorporates remotely controllable travelling wave tube amplifiers (TWTAs) for allowing their output power to be...
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7170908 |
System and method of selecting sources for a network element having redundant sources
A source selection system for a communication switch for selecting a primary datasource from a plurality of datasources is provided. The system includes a validation module associated with the...
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7164661 |
System and method for providing a two-way satellite system
A two-way satellite communication system is disclosed. A transceiver transmit signals over a return channel to a satellite and receives signals over a downlink channel from the satellite. A hub...
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7103280 |
Architecture for an optical satellite communication network
A satellite constellation has a plurality of satellites. Each of the satellites has an RF ground link for communicating with a ground station and an optical link for communication with at least one...
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7035933 |
System of distributing content data over a computer network and method of arranging nodes for distribution of data over a computer network
The invention is a system for distributing content data over a computer network and a method of arranging receiver nodes in a computer network such that the capacity of the server is effectively...
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7013137 |
Smaller aperture antenna for multiple spot beam satellites
This disclosure describes a method to generate large numbers of spot beams for multiple-beam satellite systems using smaller apertures. This is done by dividing the basic spot beam that has 3 to 4...
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6975600 |
Multimode transmission system using TDMA
A multimode transmission system using TDMA provides a plurality of satellite services to a ground station terminal. These services include timing beacon synchronization, multi-cast/broadcast data...
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6954440 |
Method and apparatus for code division switching
Time division multiplexed input signals (i.e., separated into time slots) are spread in each time slot with a destination code. This spreading is applied for destination identification as opposed...
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6836658 |
High data rate satellite communications system and method
A spot beam satellite communications system and method for delivering information to user terminals at a high data rate. In a hub, a high data rate serial data stream is separated into parallel...
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6804492 |
High volume uplink in a broadband satellite communications system
In a communication system with a bandwidth-on-demand processor, which may be power limited and connected to a myriad of terminals via relatively long delay paths, and another processor, which is...
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6795408 |
Networking system for mobile data communications
An improved technique for networking multiple users for retrieving data information from various data sources provides a less costly method for retrieving information while aboard a transportation...
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6757264 |
Satellite communication system for broadcasting audio-visual programs and multimedia data
The system comprises transmitters transmitting programs or multimedia data to a satellite, each program being transmitted on an uplink frequency channel, and program multiplexing means onboard the...
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6724761 |
Method and apparatus for serial cell replication for multicast in a cell switch
A method and apparatus for implementing multicast in a space-based communication system is disclosed. The present invention allows for the use of a buffer in which to store data packets prior to...
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6711407 |
Array of processors architecture for a space-based network router
A space-based network router architecture ( 20 ) is disclosed. The router includes an array-of-processors architecture ( 20 ) for routing uplink and downlink traffic of a communications system ( 10...
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6704297 |
Downlink orderwire integrator and separator for use in a satellite based communications system
A downlink orderwire integrator ( 63 ) and separator ( 81 ) for use in a processing satellite ( 12 ) and a user terminal ( 14 ) in a satellite based communications system ( 10 ) is provided having...
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6625129 |
Demand assigned spatial multiplexing in satellite communication systems
The methods ( 300, 900 , and 1200 ), and apparatus ( 140 and 800 ) of the present invention employ demand assigned spatial multiplexing in a satellite communication system ( 100 ) to efficiently...
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6570859 |
Satellite communication system and satellite for such a system
A satellite communication system having a spatial segment comprising at least one satellite, preferably in a geostationary orbit, carrying a multi-beam telecommunication payload and a terrestrial...
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6496696 |
Real-time CSMA method having the capability to adaptively vary cell sizes and a wireless network for implementing the same
A method in which incoming RF signals to a given node of a wireless network are detected in real-time by using a comparison circuit for comparing a signal which is indicative of the strength of an...
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6459725 |
Wireless repeater with improved diversity
The invention includes methods and systems for use in a wireless communications system, such as a CDMA mobile communications system. A communications device transmits a wireless signal. A repeater...
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6381228 |
Onboard control of demand assigned multiple access protocol for satellite ATM networks
An onboard DAMA protocol for use in connection with a processing satellite communications network, where multiple users are assigned to a common transmission resource as part of a sharing set. A...
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6341213 |
Dynamic repeater configuration for multilink satellite systems with robust subchannel interconnect capability
A dynamic repeater configuration for satellite systems is disclosed that allows for multiple broadcast of channel information and multiple subchannel allocations on uplink and downlink beam...
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6301225 |
Configurable communication apparatus that permits use of unused multiplexer channels when operating in high power mode
Redundancy ring communication apparatus having a plurality of communication channels, that comprises normally used and redundant amplifier channels that are interconnected using selectively...
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6295282 |
Calibrated low loss radio frequency switch matrix
A system for switching radio frequency signals from an input side (5, FIG. 1 ) to an output side (6) can be used to combine multiple input signals to form a single output and to distribute a single...
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6240102 |
System for routing a UBR connection
An exchange constituting an ATM network administers the number of UBR connections for every line port included in the exchange. Upon receiving a request for setting a UBR connection, the exchange...
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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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6178163 |
Optimal packet routing method and system for low earth orbit satellite communication system
In a LEO satellite system with the implementation of a virtual network, a method and a system are proposed for arranging an optimal route for data packets to travel. The method and system will...
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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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6144654 |
Method of combining and separating groups of multiple CDMA-encoded data signals and apparatus therefor
A method and apparatus for combining and separating groups of signals starts by a transmitter (500) receiving a number of CDMA-encoded signals from data sources (510). The CDMA-encoded signals are...
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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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5982756 |
Satellite communications systems using a cross-connect switch
Each of the communications satellites going around the earth is equipped with a plurality of transmitters and receivers including receiving antennas in order to be able to transmit and receive...
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5924014 |
Method and apparatus for adaptive routing in a satellite-based communication system
In satellite based communication systems (30), real time monitoring of communication links (23-25) and the subsequent adaptations to overcome problems with certain links (23,25) provides the...
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5822312 |
Repeaters for multibeam satellites
A repeater for a multibeam communications satellite combines the features of coaxial channel interbeam switching and subchannelization of some of the channels. In one embodiment described, the...
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5815527 |
Method and apparatus for switching spread spectrum/code division multiple access modulated beams
Switching of traffic channels within spread spectrum beams is performed in a satellite without buffering of the individual signals. Individual satellite beams carrying spread spectrum user RF...
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5796715 |
Non-blocking dynamic fast packet switch for satellite communication system
The present invention overcomes the limitations encountered by conventional packet switching using virtual circuits. The present invention utilizes a "datagram" approach that routes every packet...
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5790529 |
Communications network node with switched channelizer architecture
A communications network (10) includes nodes (18) in which switched channelizers (32) decompose wideband signals into narrowband signals and route the narrowband signals to specified demodulators...
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5642358 |
Multiple beamwidth phased array
A system for wireless communication between at least one first station and a plurality of second stations using a relay station is disclosed. The relay station contains, among other features, an...
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5566168 |
TDMA/FDMA/CDMA hybrid radio access methods
A radio access method for facilitating communication between at least one first station and a plurality of second stations is disclosed. First, each signal intended for transmission is buffered at...
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5499237 |
Waste canceling packet routing system and method
In a system that includes a constellation of satellite communication nodes, information packets are routed through the constellation using routing tables stored in each communication node. The...
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