Class / Patent application number | Description | Number of patent applications / Date published |
455428000 | Switching or routing | 19 |
20080220771 | SATELLITE REFERENCE TERMINAL SYSTEMS AND METHODS - Satellite communications systems, methods, and related devices are described. A satellite communications system may include routing and switching functionality onboard the satellite. Such a system may include a satellite in communication with terminals (e.g., subscriber terminals or gateways) either directly, or via one or more other satellites through an inter-satellite link. The satellite may be configured with different beams which each provide service to a coverage area. A ground-based network control center (NCC) may dynamically allocate bandwidth and process data measured on the satellite. A novel partition of functionality between the satellite and the NCC is described. Routing paths on the satellite, and the distribution of routing tables within the system, are described as well. | 09-11-2008 |
20080268837 | Method and apparatus for selectively operating satellites in tundra orbits - A satellite system provides geosynchronous satellites in elliptical orbits in respective elliptical orbital planes separated by 120 degrees. The satellites traverse a common figure-eight ground track comprising northern and southern loops. The satellites are controllably switched to operate the satellite currently traversing the northern loop to deliver a selected signal (e.g., a selected frequency signal) to satellite receivers. | 10-30-2008 |
20080305788 | PSEUDO-RANDOM SEQUENCE MAPPING IN WIRELESS COMMUNICATIONS - Systems and methodologies are described that facilitate scrambling of downlink reference signals utilizing a pseudo-random sequence (PRS) corresponding to a primary synchronization code (PSC) and secondary synchronization code (SSC) combination. Utilization of the combination allows for orthogonal sequencing to be removed from the scrambling. This can be beneficial, for example, where resources required for orthogonalizing the reference signal outweigh the benefit of utilizing the orthogonal sequences. In such scenarios, selective scrambling can be utilized such that the orthogonal sequence or instead the PSC/SSC combination can be provided to leverage advantages of both mechanisms in the given scenarios. | 12-11-2008 |
20090029696 | SYSTEMS AND METHODS FOR MONITORING SELECTED TERRESTRIALLY USED SATELLITE FREQUENCY SIGNALS TO REDUCE POTENTIAL INTERFERENCE - A satellite radiotelephone frequency band can be reused terrestrially by an ancillary terrestrial network even within the same satellite cell, using interference reduction/cancellation techniques. An interference reducer is responsive to a space-based component and to an ancillary terrestrial network. The interference reducer is configured to reduce interference in wireless communications that are received by the space-based component from first radiotelephones in the satellite footprint over a satellite radiotelephone frequency band using wireless communications that are received by the ancillary terrestrial network from selected ones of second radiotelephones in the satellite footprint over the satellite radiotelephone frequency band and/or wireless communications that are transmitted by the ancillary terrestrial network to the second radiotelephones in the satellite footprint over the satellite radiotelephone frequency band. The interference reducer may include a prefilter that is configured to determine the selected ones of the second radiotelephones. | 01-29-2009 |
20090042562 | Virtual Gateway Redundancy - A method and system are presented for providing satellite communications coverage for a geographical area involving operating a plurality of gateways including a first gateway and a second gateway, wherein the first gateway is configured to utilize at least one first spot beam associated with at least one first coverage area within the geographic area to provide relayed satellite communications to a plurality of first subscriber terminals located in the at least one first coverage area, wherein the second gateway is configured to utilize at least one second spot beam associated with at least one second coverage area within the geographic area to provide relayed satellite communications to a plurality of second subscriber terminals located in the at least one second coverage area, and upon a failure condition associated with the at least one first spot beam, expanding the at least one second coverage area to include a portion of the at least one first coverage area, to provide relayed satellite communications to at least some of the first subscriber terminals without utilizing the at least one first spot beam. | 02-12-2009 |
20090318137 | INTERNETWORKING AIR-TO-AIR NETWORK AND WIRELESS NETWORK - Methods and systems of operating a communication system are provided. One method comprises establishing at least one communication link between a mobile-to-mobile communication network of mobile nodes and at least one route computing system via gateway node. The gateway node is one of the mobile nodes that is in communication with a wireless network. Moreover, the route computing system is in communication with a terrestrial network that is also in communication with the wireless network. The at least one established communication link is then used to communicate messages. | 12-24-2009 |
20100015972 | METHOD AND APPARATUS FOR HANDOVER IN MOBILE COMMUNICATION NETWORK INCLUDING SATELLITE NETWORK - Provided are a method and mobile communication terminal for handover in a mobile communication network including at least one mobile communication base station and a communication satellite. The handover method includes the steps of: (a) calculating a signal power received from a currently communicating mobile communication base station among the at least one mobile communication base station; (b) calculating a signal power received from each of the communication satellite and the at least one mobile communication base station except the base station of step (a); (c) selecting a mobile communication base station having the highest among the calculated signal powers except the signal power received from the communication satellite and the signal power received from the base station of step (a); and (d) when the signal power calculated in step (a) is below a predetermined minimum handover power, a difference between the signal power of the selected mobile communication base station and the signal power calculated in step (a) is equal to or below a first terrestrial handover sensitivity, and there is no other mobile communication base station capable of communicating with the mobile communication terminal, performing handover to the communication satellite. | 01-21-2010 |
20100029270 | MOBILITY CALL MANAGEMENT - A mobility call management service is disclosed that provides enhanced call management functionality for a wireless mobile terminal (MT). Incoming and/or outgoing calls are managed based on an assessment of the degree of motion of the MT, or other available data pertinent to the MT's physical situation, such as but not limited to it's location, movement, or rate of movement. The degree of motion or other assessment may be used to determine whether a communication can safely terminate on, originate from, or continue safely on the MT, so as to reduce or remove driver distraction. | 02-04-2010 |
20100035607 | SEAMLESS TRANSITIONING OF AIR-TO-GROUND TRAFFIC - An apparatus and a method may be provided by which a user aboard an aircraft may use a processing device to communicate with another device, which is not located aboard the aircraft, via an air-to-ground network connection. A communication satellite may provide connectivity for the air-to-ground network connection. As the aircraft approaches an end of a satellite coverage area, the air-to-ground network connection may seamlessly transition to a second communication satellite or a second communication medium. Some communication satellites may communicate via a first frequency range and other communication satellites may communicate via a second frequency range. In one mode of operation, the air-to-ground network connection may be via a communication satellite communicating via a first frequency range. A transition to a communication medium communicating via a second frequency range may occur automatically only during the one mode of operation. | 02-11-2010 |
20100210262 | RADIOTERMINAL SYSTEM SERVERS AND METHODS - A radioterminal system includes a server that contains a listing of satellite spot beams and registration information for radioterminals. The listing of satellite spot beams includes an association of base stations with each satellite spot beam of the listing of satellite spot beams. Related methods are also provided. | 08-19-2010 |
20110143752 | MOBILE COMMUNICATION SYSTEM AND CELL RESELECTION METHOD THEREOF - Provided are a mobile communication system and a cell reselection method of a mobile communication terminal. The mobile communication system includes two or more communication systems using different transmission modes and a mobile communication terminal connectable to the two or more communication systems. The mobile communication terminal measures received signal strength of a satellite communication cell when being switched to an idle mode, divides priority of a satellite communication system using the measured received signal strength and location information of the mobile communication terminal, and sets a first threshold value necessary for cell reselection of the satellite communication system. | 06-16-2011 |
20120289225 | GATEWAY ROLLOUT - A method for providing satellite communications coverage for a geographical area includes operating a plurality of gateways including a first gateway and a second gateway. The first gateway is configured to utilize at least one first spot beam associated with at least one first coverage area, and the second gateway is configured to utilize at least one second spot beam associated with at least one second coverage area. As part of a phased deployment, the at least one second coverage area is expanded to include at least one third coverage area, and the second gateway is configured to provide relayed satellite communications to the plurality of second subscriber terminals located in the at least one second coverage area and to a plurality of third subscriber terminals located in the at least one third coverage area. | 11-15-2012 |
20130012198 | METHOD AND SYSTEM FOR IMPLEMENTING COMMUNICATIONS BETWEEN MULTIPLE SUBNETS AND MSC - The present invention discloses a method and a system for implementing communications between multiple subnets covered by one physical Mobile Switching Center and an MSC. The method maps the MSC to multiple virtual MSCs that are logical MSCs within the physical MSC, each virtual MSC corresponds to one subnet that represents one or more location areas within the physical MSC, assigns to each of the multiple virtual MSCs a virtual MSC number, identifies a virtual MSC number of one of the virtual MSCs that is currently visited by the wireless mobile terminal, according to the current location area and the set relationship between each subnet that represents one or more location areas within the physical MSC and each virtual MSC number, and transmits the identified virtual MSC number of one of the virtual MSCs that is currently visited by a terminal when the wireless mobile terminal implements communications. | 01-10-2013 |
20130095822 | DYNAMIC RADIO CAPABILITIES BASED UPON AVAILABLE TRANSPORT BANDWIDTH - A monitor and control unit is described herein which is associated with a land-based controller (e.g. base station controller) and one or more satellites, where the monitor and control unit is arranged to dynamically configure mobile-based controllers (e.g., radio base stations) located on mobile vessels (e.g., transport vessels, cruise liners) to provide bandwidth (voice and data capabilities) based at least on the number of mobile vessels being served by each of the satellites. | 04-18-2013 |
20130143552 | METHOD AND DEVICES FOR ROUTING IN A SATELLITE-BASED COMMUNICATION SYSTEM - A satellite-based communication system ( | 06-06-2013 |
20140128059 | DEVICE AND METHOD FOR OPTIMIZING THE GROUND COVERAGE OF A HYBRID SPACE SYSTEM - A telecommunications system for intermittent data transfer from and to at least one user located substantially on the surface of a celestial body. The system comprises at least one surface transmitter/receiver terminal associated with each user, one or more signal repeater means for the signals transmitted and/or received from the surface terminals. Each moving repeater means has at least one antenna oriented toward the surface of the celestial body, and adapted to allow communications from and to surface terminals. Each antenna produces a transmission/reception beam, the track of which on the surface of the celestial body forms the ground track, the progressive sweeping of the surface by this ground track forming a strip called a swath. | 05-08-2014 |
20140179306 | Method of Routing of Data Messages from Mobile Devices Through Satellite and Terrestrial Communication Networks - A telephone network provides a system which overcomes the problems with roaming charges and loss of service encountered by users by providing an alternate data message path through Low Earth Orbit (LEO) satellite networks such as Iridium Satellite or Globalstar, or through geosynchronous satellite networks such as Terrestar or Inmarsat. The system includes a cellular telephone handset enhancement to include specific satellite network communication capabilities that work in unison with a novel message routing system to handle the multiple message transport paths available for use by the cellular telephone. Each field user device includes a message exchange delivery algorithm which operates to set the delivery route of messages to select either the cellular telephone network or the satellite network. | 06-26-2014 |
20150341108 | Transparent satellite communications in a cellular centric M2M network - A wireless communication system includes one or more application servers communicating with remote terminals over connections established via cellular or satellite networks. The application servers are capable of switching between different cellular networks. A satellite gateway communicates with the remote terminals via satellite connections when cellular service is unavailable. The satellite gateway emulates a cellular network so that the application server sees the satellite gateway as another cellular network. | 11-26-2015 |
20150381264 | METHOD AND DEVICES FOR ROUTING IN A SATELLITE-BASED COMMUNICATION SYSTEM - A satellite-based communication system ( | 12-31-2015 |