Matches 1 - 24 out of 24


Match Document Document Title
US20130065514 Advanced Timing and Time Transfer for Satellite Constellations Using Crosslink Ranging and an Accurate Time Source  
A system, method, and apparatus for advanced timing and time transfer for satellite constellations using crosslink ranging and an accurate time source are disclosed herein. In particular, the...
US20120276842 WIRELESS COMMUNICATIONS DEVICE PROVIDING TEMPERATURE-COMPENSATED CLOCK CORRECTION FEATURES AND RELATED METHODS  
A wireless communications device may include a portable housing and a temperature-compensated clock circuit carried by the portable housing. The device may further include a wireless receiver...
US20120309294 METHOD AND SYSTEM FOR PROVIDING TIMING AND FREQUENCY SYNCHRONIZATION FOR SATELLITE DIVERSITY  
An approach facilitates synchronization by providing: (i) a method to analyze the two-satellite synchronization problem in time-frequency domain; and (ii) a two-stage estimation method to...
US20130189922 TIME SYNCHRONIZATON OF NETWORK SUBSCRIBERS  
A more simple and robust time synchronization of network subscribers compared to solutions known in the state of the art is provided by a device for time synchronization of network subscribers of...
US20080057863 SATELLITE OPTIMIZED AIR INTERFACE  
A method is disclosed for establishing communication links in a satellite based wireless communication system. The method includes: establishing a forward link from the satellite to at least one...
US20140187144 BASE STATION AND CLOCK SYNCHRONIZATION METHOD THEREOF  
An enhanced base station and clock synchronization method are provided. The method includes scanning to discover a satellite transmitting a satellite signal and a master base station providing...
US20140273815 POWER BOOSTER IN AN MEO SETTING  
A customer satellite terminal provides seamless hand-off from a descending satellite to an ascending satellite in an equatorial MEO constellation at RF. The hand-off from the descending satellite...
US20050042984 Apparatus and techniques for maximizing satellite link availability in the presence of satellite system induced random disconnections  
Reliability of a connection between two stations over a satellite link is improved by having a station periodically send a heartbeat message. Failure to receive a heartbeat message within a...
US20120040608 NEAR-FIELD COMMUNICATION (NFC) SYSTEM PROVIDING LOW POWER PEER-TO-PEER RECOGNITION MODE AND RELATED METHODS  
A near-field communication (NFC) system may include a plurality of NFC devices each including an NFC circuit configured to wirelessly communicate using an NFC communications protocol, and a...
US20060292982 Method for accomodating timing drift between base stations in a wireless communications system  
A method is provided for controlling communications between a base station and a mobile device. The method comprises enlarging a search window in which a transmission is expected to be received in...
US20100062706 ANTENNA AND SATELLITE ALIGNMENT USING BEAM PROJECTIONS  
Disclosed is a satellite beam pointing system that uses color encoded signals from subscribers to align antennas on a satellite and to align the satellite. Subscribers detect the signal strength...
US20090156117 HIGH RELIABILITY SATELLITE NETWORK DELIVERY  
A communication satellite comprises at least one antenna configured to communicate with at least one ground terminal over a first communication link in a first frequency band and a second...
US20100085909 TERMINAL SELF-SYNCHRONIZATION FOR MESH SATELLITE COMMUNICATIONS  
Methods, systems, and devices are described for synchronization in mesh satellite communications. The arrival time of the gateway signal may be used to set a start of receive frame time for a...
US20120264371 APPARATUS AND METHOD FOR CONTROLLING TIME SYNCHRONIZATION BETWEEN BASE STATIONS  
Provided are an apparatus and a method for controlling time synchronization between base stations when a receiving state of a satellite signal is poor. The present invention provide an apparatus...
US20150215030 INTER-SATELLITE CROSSLINK COMMUNICATIONS SYSTEM, APPARATUS, METHOD AND COMPUTER PROGRAM PRODUCT  
A communications system, apparatus, method, and computer program product for inter-satellite and inter-spacecraft crosslinks (ISL) with non-ISL optimized antennas where at least one component of...
US20120178363 INTER-SATELLITE CROSSLINK COMMUNICATIONS SYSTEM, APPARATUS, METHOD AND COMPUTER PROGRAM PRODUCT  
A communications system, apparatus, method, and computer program product for inter-satellite and inter-spacecraft crosslinks (ISL) with non-ISL optimized antennas where at least one component of...
US20120156987 WIRELESS COMMUNICATION SYSTEM, WIRELESS BASE STATION, CONTROL METHOD, AND CONTROL DEVICE  
Each of the plurality of wireless base stations determines whether the accuracy of a synchronizing signal generated at a corresponding synchronizing signal generation unit is below a predetermined...
US20110028088 SYSTEM AND METHOD FOR ENABLING ULTRA SMALL APERTURE COMMUNICATION ANTENNA USING SPECTRAL REPLICATION AND COHERENT FREQUENCY AND PHASE COMBINING  
A system for enabling use of ultra-small aperture terminals in satellite communications is provided. The system comprises a transmitter configured to receive an input signal having information, a...
US20070281611 System and method for providing an improved terrestrial subsystem for use in mobile satellite systems  
A system or method is disclosed which employs filters on a satellite whose bandwidth is varied by ground command to restrict interference experienced by a satellite as an auxiliary terrestrial...
US20050288012 Timing compensation method and means for a terrestrial wireless communication system having satelite backhaul link  
A technique for timing compensation is used in a terrestrial wireless communication system (300) that has a satellite backhaul link (352, 358, 360) to at least one base transceiver station (306,...
US20110183606 SYNCHRONIZING A RADIO NETWORK WITH END USER RADIO TERMINALS  
A wireless communications device comprises a communication receiver and a positioning system receiver in the wireless mobile communication device. An absolute time signal is received at the...
US20070087691 Apparatus and method for supporting multi-link in multi-hop relay cellular network  
A framing method of fixing a training signal and a control channel for multi-link (direct link and relay link) synchronization in a multi-hop relay cellular network, and a transmitting/receiving...
US20170127220 ATMOSPHERIC SENSOR NETWORK AND ANALYTICAL INFORMATION SYSTEM RELATED THERETO  
Disclosed is an atmospheric information network comprised of a group of low earth orbit satellite-based sensors providing global coverage of the earth, together with one or more ground-based...
US20150341109 SATELLITE COMMUNICATION SYSTEM WITH TIME-MULTIPLEXED COMMUNICATION FROM SPOT BEAM DEFINED SUB-REGIONS  
A communication system includes a satellite and a ground station. The satellite is configured to preferentially receive signals from each of a plurality of sub-regions within a region of...

Matches 1 - 24 out of 24