Abstract: An apparatus and a method for automatically managing a satellite broadcasting service are disclosed. The apparatus may include a rain attenuation information collection unit to measure weather information and a satellite broadcast signal and to collect and provide satellite broadcast signal quality information corresponding to rain attenuation, a rain attenuation analysis unit to analyze rain attenuation information collected by region and to verify a rain attenuation level, a satellite broadcast transmission signal plan unit to generate a satellite broadcast signal change plan to change a satellite broadcast transmission signal by region based on the verified rain attenuation level, and a satellite broadcast transmission signal controller to transmit a signal change instruction to a satellite ground station for the satellite broadcast transmission signal to be changed based on the generated satellite broadcast signal change plan.

Abstract: 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 carried by the portable housing for receiving timing signals, when available, from a wireless network, and a satellite positioning clock circuit carried by the portable housing. A clock correction circuit may be carried by the portable housing for correcting the temperature-compensated clock circuit based upon timing signals from the wireless network when available, and storing historical correction values for corresponding temperatures. The clock correction circuit may also correct the temperature-compensated clock circuit based upon the stored historical correction values when timing signals are unavailable from the wireless network, and correct the satellite positioning clock based upon the temperature-compensated clock circuit.

Abstract: A wireless base station that performs wireless communication with a mobile terminal is connected to a plurality of time information notification servers. The wireless base station selects any of a plurality of pieces of time information notified from a plurality of time information notification servers, respectively, and corrects an internal clock based on the selected piece of time information. This can keep the internal clock of the wireless base station highly accurate.

Abstract: The invention relates to a mobile telecommunication device (100) for establishing a telecommunication connection in the radio frequency range with a base station (102; 104; 1100), the mobile telecommunication device comprising; at least a first (106) and a second antenna (108), an electromagnetic shield (110) located between the first and the second antenna, a logic component (1000), wherein the first and the second antenna are adapted to transmit and receive telecommunication signals of the same frequency band, and wherein the logic component selects whether the first or the second antenna is used for the telecommunication connection with the base station.

Abstract: A repeater installed in a moving object is provided, in which a link antenna module has a plurality of link antennas steered to predetermined directions, for wirelessly communicating with a Base Transceiver Station (BTS), a link antenna path setting module selects at least one of the plurality of link antennas of the link antenna module and connects a path between the selected link antenna and a rear end, a service antenna module has at least one service antenna installed within the moving object, for wirelessly communicating with Mobile Stations (MSs) within the moving object, a relay signal processing module is connected to the link antenna module through the link antenna path setting module and processes transmission and reception relay signals between the link antenna module and the service antenna module, a movement information module measures current movement information about the moving object and provides the current movement information, a received signal measuring module measures a received signal o

Abstract: An outdoor broadband unit receives a current time and maintenance mode parameters from a network device. The outdoor broadband unit also determines a mode associated with selection of an antenna beam, provided on an antenna of the outdoor broadband unit, based on at least one of the current time and the maintenance mode parameters. The outdoor broadband unit further selects an antenna beam or a serving cell to use based on the determined mode.

Abstract: A GSM or UMTS mobile telecommunications network is disclosed. In addition to the conventional radio access network comprising the base stations, one or more additional access points are provided. An access point is connected to the network core by an IP transport broadband connection. The access point is configured to appear to the mobile terminal as a conventional base station—that is, it communicates with the mobile terminal using GSM or UMTS transport protocols and does not require any modification to a standard GSM or UMTS mobile terminal. Access Points are typically not under the direct control of the network provider. Arrangements are disclosed which allow the network provider to verify that the access point a mobile terminal is about to commence communicating through is at a particular location. Differential charging may be performed in dependence upon a subscriber's location.

Abstract: Subject matter disclosed herein relates to aircraft communication, and more particularly to a non line-of-sight communication path to augment a line-of-sight communication path.

Abstract: Techniques for monitoring transmission performance of a satellite communications systems are provided, including techniques for measuring the primary contributors to the end-to-end SNR, including the uplink SNR, the downlink SNR, and the C/I for each link in the network. These individual measurements are used to estimate satellite effective isotropic radiated power (EIRP), satellite antenna gain-to-noise-temperature (G/T), and loss due to an Earth Terminal pointing error. The EIRP, satellite antenna G/T and loss due to Earth terminal pointing error may then be used to determine operating parameters for the satellite communications network that enable the network to operate more efficiently.

Abstract: 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 terminal. A received control signal from the gateway may then be used to set a start of transmit frame time for the user terminal. The distance between the satellite and the gateway may change. Ephemeris data, various collections of terminal measurements, or terminal sync bursts may be used to modify start of transmit frame or start of receive frame settings for the terminal or gateway.

Abstract: A system for enabling communication utilizing a satellite communications network includes a mobile communication device and a satellite modem apparatus. A text message is generated at the mobile communication device and transmitted to the satellite modem apparatus using a short range wireless protocol. The satellite modem transmits the text message as a short burst data message to a satellite within the satellite communications system where it is routed to a receiver unit. The satellite modem apparatus does not include a processor. Instead, the mobile communication device includes a processor and program code for generating, transmitting, and receiving text messages, and for encrypting a text message, and/or compressing a text message to a size suitable for transmission via an L-band communications protocol from the satellite modem apparatus.

Abstract: A method and arrangement for providing location information of a called mobile communication device to a calling party is implemented through a mobile device locator platform disposed in the communication network. A mobile device subscriber to the location service initiates a process where the location of his mobile device is updated on a regular basis and the location information stored in a database on the platform. When a call is placed to his subscribed device, the location information is transmitted to the calling party prior to setting up the call to the called device, allowing the calling party to determine whether or not to proceed with the call, as well as eliminating the need to ask the common question “where are you?” when placing a call to a mobile device.

Abstract: First radio signals are received by a first satellite, the received first radio signals including a desired satellite uplink signal transmitted from a first source using a frequency assigned to the first source and an interfering signal transmitted from a second source using the frequency assigned to the first source. The first radio signals are combined based on a first performance criterion to generate a first output signal. Second radio signals are received by a second satellite, the received second radio signals including a measure of the desired signal. The second radio signals are combined based on a second performance criterion to produce a second output signal. The first and second output signals are combined to generate an estimate of the desired satellite uplink signal.

Abstract: A system and method for optimizing satellite network utilization is disclosed. The method includes delivering a message to a communication device in the satellite network where a confirmation is received from a satellite network gateway that a message is intended for the communication device, scheduling a notification for the communication device at a scheduled time, and at the scheduled time, instructing the satellite network gateway to send the notification to the communication device. The notification causes the communication device to request the message from the network gateway upon receipt of the notification by the communication device. Scheduling may be coordinated within an alert window time period of the communication device when it is listening for notifications. The start time of the alert window time period may be provided by an application gateway, that along with the communication device, receive network time data to remain synchronized.

Abstract: A communication system is provided that allows the use of low-cost, low-power remote terminal units that communicate substantially asynchronously and independently to a base station. To minimize cost and complexity, the remote terminal units are configured similarly, including the use of substantially identical transmission schemes, such as a common Direct Sequence Spread Spectrum (DSSS) code. To minimize collisions among transmissions, the communication system is designed to use a high-gain antenna with a limited field of view, to limit the number of cotemporaneous, or overlapping transmissions that are received at the base station. To cover a wide area, the limited field of view is swept across the area of coverage. To overcome potential losses caused by collisions, the remote terminal units are configured to repeat transmissions; to minimize repeated collisions, the repeat interval and/or duration is randomized.

Abstract: Systems and methods are described for paired-beam satellite communications in a flexible satellite architecture. Embodiments include one or more “bent pipe” satellites having multiple transponders for servicing a number of spot beams. Implementations include novel types of paired-beam transponders that communicatively couple gateway terminals and user terminals in different spot beams. Some implementations also include loopback transponders that communicatively couple gateway terminals and user terminals in the same spot beam. The transponders can use similar components, can provide for flexible forward-link and return-link spectrum allocation, and/or can provide other features. Certain embodiments further include support for utility gateway terminal service and/or redundancy (e.g., active spares) for one or more active components.

Abstract: A satellite signal reception device has a reception unit that receives a satellite signal transmitted from a positioning information satellite, a reception state display device for displaying the satellite signal reception state, a reception state evaluation unit that determines the reception condition of the satellite signal received by the reception unit, and a display controller that controls the reception state display device to display the reception condition determined by the reception state evaluation unit. The reception state evaluation unit determines the level of the reception condition based on the number of positioning information satellites from which satellite signals are received and the signal level of each received signal, and the display controller controls the mechanical drive unit based on the reception level determining by the reception state evaluation unit to display the reception level using the time display device that displays the time.

Abstract: The present invention provides a satellite broadcast receiving and distribution system that will permit for the transmission of vertical and horizontal or left-hand circular and right-hand circular polarization signals simultaneously via a single coaxial cable. The system of the present invention will accommodate two different polarity commands from two or more different sources at the same time. This satellite broadcast receiving and distribution system of the present invention will provide for the signals received from the satellite to be converted to standard frequencies so as to permit for signals to travel via existing wiring which the present day amplifiers can transport in buildings, high-rises, hospitals, and the like so that satellite broadcasting can be viewed by numerous individuals by way of a single satellite antenna.

Abstract: In one embodiment there are provided systems and methods for detecting radio frequency interference (RFI) on a satellite that implements on-board processing. The system leverages an on-board programmable modem complex, and in some cases reprograms portions thereof, to function as an RF spectrum analyzer sensor element that captures and relays received RF information as meta-data to a ground-based system where that information can then be used, on the ground, to generate a spectral display of a received signal at the satellite.

Abstract: A satellite reception assembly may comprise a memory collocated with a receive module and a basestation module. The receive module may receive a satellite signal and recover data carried in the satellite signal. The data may be stored in the memory. The stored data may be transmitted to mobile devices via the basestation module. Which portion of the recovered data is store in the memory may be based on demand for particular data in the coverage area served by the basestation module. Which portion of the recovered data is stored in the memory may be based on information provided by a satellite subscriber, such as the subscriber's anticipated location at one or more future time intervals.

Abstract: Techniques for providing broadcast services on spot beam satellite are provided. These techniques enable the mission of a spot beam satellite system to be changed from providing spot beam transmission to broadcast transmissions, and vice versa, without requiring that the satellite be reconfigured. Broadcast data may be encoded and transmitted concurrently on a plurality of spot beams. According to some embodiments, the broadcast data may be encoded using a space-time code and/or forward error corrected (FEC) encoded to enable a receiver to correct errors in the signal received from the spot beam satellite.

Abstract: A broadband satellite having a payload subsystem configured to provide dual frequency conversion and bandwidth aggregation is communicatively coupled (i) to at least one gateway by a feeder link operating at a first frequency band; and (ii) to a plurality of user terminals by user links operating at a second frequency band. The payload subsystem has a first and a second frequency converter a satellite feeder link antenna feed, and a satellite user link antenna feed. The first frequency converter down converts, to a third frequency band, as an aggregated block, signals received at the satellite feeder link antenna feed from the gateway via the feeder link. The third frequency band is substantially lower than both the first and second frequency band. The down converted signals are routed to the second frequency converter for up converting to the second frequency band for transmission over the user link to the user terminals.

Abstract: Methods, systems, and apparatuses are presented for improved satellite communications. The satellite system may comprises at least one gateway, a satellite in orbit configured to communicate with the at least one gateway and provide a plurality of spot beams, and a plurality of subscriber terminals. The spot beams may include a first spot beam to illuminate a first region and a second spot beam to illuminate a second region adjacent to and overlapping with the first region. The first spot beam as sent to at least one subscriber terminal may be affected by (1) interference from other signal sources including the second spot beam at a signal-to-interference ratio C/I and (2) noise at a signal-to-noise ratio C/N. Reception of signals from the first spot beam by the at least one of the first plurality of subscriber terminals may be interference-dominated such that C/I is less than C/N.

Abstract: Methods for providing high-speed connectivity to an aircraft in flight from a satellite. Example methods include transmitting first radio frequency signals from a wide-beam antenna at the satellite at a beamwidth of at least 6 degrees orbital arc to provide a wide coverage area. The first radio frequency signals are transmitted at a first frequency of at least 10 gigahertz and at a low equivalent isotropic radiated power. The method also includes receiving second radio frequency signals from a mobile antenna located on the aircraft, wherein the second radio frequency signals are received at a second frequency of at least 13.75 gigahertz, and the second frequency is different than the first frequency.

Abstract: A high throughput satellite including a transponder configured to receive radio wave signal from a market area, transmit the signal to a hub, receive a response signal from the hub, and transmit both the original signal and the response signal back to the market area. The satellite may also provide increased throughput by re-using spectrum in the Ka band. The satellite may also include a payload architecture which may be reconfigured such that, in response to control signals received from the ground, the payload architecture provides satellite communications to a first market area, a second market area, or both the first market area and the second market area.

Abstract: In a distributed management scheme for LEO satellite networks interactions between a satellite and the designated fixed center occur according to a time schedule and only when the designated center is in the coverage area of the payload. For exception/alarm reporting and real-time configuration updates the interaction varies with time. Interactions of this type occur between a satellite and the management center that is “nearest” to the payload or satellite at the time instant at which the network event occurs or configuration upload is needed. The nearest management center for a payload is the center that can be reached from the payload with fewest number of crosslink hops. A central network operation center determines, prior to payload launch, the association between satellites and management centers for routine information exchange, and the nearest management center for the payload for different snapshots of time.

Abstract: A signal receiver used in a satellite communication system is provided. The signal receiver comprises a first type code generator, a second type code generator, a composite code generator, a correlation module and a determining module. The first type code generator generates a first type code corresponding to a first type signal. The second type code generator generates a second type code corresponding to a second type signal and having a code length N-time longer than that of the first type code. The composite code generator generates a composite code by superimposing N successive first type codes on the second type code. The correlation module correlates the composite code with a cell of a received signal to generate correlation results. The determining module determines a type of the received signal according to correlation results of the composite code with the received signal.

Abstract: A system for bi-directional data content transfer between a plurality of mobile platforms, such as aircraft or cruise ships, and a ground-based control segment. The system includes the ground-based control segment, a space segment and a mobile system disposed on each mobile platform. The ground-based control segment includes an antenna which is used to transmit encoded RF signals representative of data content to the space segment. The space segment includes a plurality of satellite transponders, with one of the transponders being designated by the ground-based control segment to transpond the encoded RF signals to the mobile system. The mobile system includes steerable receive and transmit antennas. The receive antenna receives the encoded RF signals from the satellite transponder, which are thereafter decoded, demodulated, D/A converted by a communications subsystem and transmitted to a server. The server filters off that data content not requested by any occupants on the mobile system.

Abstract: A system for communications between a lunar or planetary surface and the Earth may include a first communications satellite adapted to be positioned in a predetermined orbit relative to a celestial body. A first antenna may be mounted on the first communications satellite. The first antenna may include a predetermined beam shape for communications between the first communications satellite and an asset on the lunar or planetary surface. A second antenna may also be mounted on the first communications satellite. The second antenna may include a selected beam shape for communications between the first communications satellite and the Earth. A communications system may be included for relaying communications between the first and second antennas.

Abstract: A simulation apparatus according to the present invention performs propagation simulation regarding the radio wave quality of a base station radio wave in a specific area. The apparatus includes: a receiving unit configured to receive, from a plurality of mobile terminals existing in the specific area, measured results of the radio wave quality of a base station radio wave from a base station around the mobile terminal, the field intensity of a GPS wave from a GPS satellite, and a position of the mobile terminal; and a simulating unit configured to identify a mobile terminal having the measured result of the field intensity at or above a predetermined value from the plurality of mobile terminals and correct a propagation equation used for the propagation simulation using the measured result of the radio wave quality at the position of the identified mobile terminal for performing the propagation simulation.

Abstract: A high capacity satellite communications system including a satellite with a beam for a forward downlink focused on a geographic area for which disproportionately higher capacity is desired, a hub located in a geographic area for which disproportionately lower capacity is desired, compared to the location of a VSAT, and the VSAT located in area where a beam for a forward downlink received by the VSAT from the satellite does not overlap with a beam for a return downlink received by the hub from a satellite.

Abstract: According to one embodiment, a method for use in managing satellite communications includes: receiving, at a first earth-based gateway antenna system, one or more microwave communication signals from a substantially geostationary satellite; monitoring for a performance change in at least one signal from the satellite; and, in response to detecting a performance change in the at least one signal, transmitting instructions to the satellite to transmit at least a portion of the one or more microwave communication signals to a second earth-based gateway antenna system.

Abstract: In accordance with one aspect of the present invention, a method selects a program from a library of programs. A user selection is determined based upon a voice command, and the program is presented at a display device in accordance with the voice command. In accordance with another aspect of the present invention, a system selects a program from a library of programs. The system includes a processor that determines a user selection based upon a voice command, and also includes a display device that presents the program in accordance with the voice command. In accordance with yet another embodiment of the present invention, a computer-readable medium contains a set of instructions that when executed by a processor cause the processor to determine a user selection based upon a voice command and to command a display device to present the program, in accordance with the voice command.

Abstract: A system for allowing ground terminals, mobile or stationary, to dynamically and electronically re-align signal polarizations to match that of incoming signal polarizations from transmitting sources. An adaptive re-orientation technique utilizes a cost minimization function to determine the difference between actual orientation values and desired orientation values. Calculations of satellite and ground terminal orientations and bearings to create weighting components allow a mobile ground terminal to electronically realign itself to the signals of a transmitting source, thereby eliminating the need for physically re-orienting the antenna array through mechanical processes.

Abstract: A portable satellite data communication device that provides data communication capabilities to cellular only smartphone and similar device globally. The portable satellite data communication device is equipped with a short range wireless transceiver such as Bluetooth for communication with the smartphone and a satellite data transceiver for communication with the satellite. The device acts as network bridge between the smartphone and the satellite network. Using that device allows smartphone users to keep sending and receiving data messages like emails anywhere in the world even if there is no cellular coverage. The portable satellite data communication device also has built-in functionalities for monitoring the satellite signal and the arrival of new messages at the satellite gateway.

Abstract: The present invention relates to satellite systems and more particularly, to the provision of a satellite system for weather and climate monitoring, communications applications, and scientific research at higher latitudes, referred to as the circumpolar region and defined here as the area with latitudes greater than 60°, in either the northern hemisphere or the southern hemisphere. Contrary to the teachings in the art it has been discovered that a satellite system and method may be provided using satellites in 24 sidereal hour orbits (geosynchronous) with inclinations (70° to 90°), orbital planes, right ascensions and eccentricities (0.275-0.45) chosen to optimize coverage of a particular service area located at high latitudes. A constellation of two satellites can provide continuous coverage of the circumpolar region. The satellites in this orbit avoid most of the Van Allen Belts.

Abstract: A method and apparatus for mitigating interference in a satellite signal receiver is described. The satellite signal receiver receives satellite signals from a plurality of satellites. In one example a control signal is transmitted to the satellite signal receiver upon occurrence of data transmission from a wireless transceiver operating in proximity to the satellite signal receiver. Signal integration within the satellite signal receiver is gated in response to the control signal In another example, one or more values of satellite signal samples are selected from a plurality of possible values. Signal integration within the satellite signal receiver is gated in response to a percentage of satellite signal samples taken over a predefined period exceeding a predefined threshold. In yet another example, a gain setting of an automatic gain control circuit within the satellite signal receiver is adjusted in response to detection of interference.

Abstract: Systems and methods provide a network's synchronization status to a terminal when the terminal receives a transmission from the network. This network synchronization status can be indicated in accordance with various methods including, but not limited to the following: with a status flag in a network message; in a network capability indication; in a network's positioning capability indication; cell/network time relation information; in a time relation information of different Radio Access Technologies; and implicitly with another parameter and/or by a request for a certain measurement. When the network's synchronization status is determined, accurate time information/time assistance data can be maintained at the terminal.

Abstract: Provided are a signal restoring apparatus that can restore a reception signal of a counterpart terminal and increase frequency band efficiency by estimating its own transmission signal from a reception signal transmitted from a counterpart terminal through a satellite communication device and removing the estimated transmission signal, and a method thereof. The signal restoring apparatus according to the exemplary embodiment of the present invention includes: a transmitter transmitting a transmission signal to a satellite communication device; a band spread signal generator transmitting a band spread signal to the satellite communication device; a signal estimator estimating the transmission signal included in a reception signal transmitted from a counterpart terminal through the satellite communication device on the basis of the transmission signal and the band spread signal; and a signal remover removing the estimated transmission signal from the reception signal.

Abstract: A signal processing circuit, which is within a satellite reception assembly, may be operable to analyze actual frequency information corresponding to a plurality of downconverted signals. Each of the downconverted signals may be downconverted using one or more corresponding local oscillators (LOs). Based on the analyzing, one or more of the following may be determined: one or more frequency offsets associated with the one or more corresponding LOs and one or more actual guard bands. The signal processing circuit may generate information on the determined frequency offsets and the determined actual guard bands. The signal processing circuit may perform, based on the generated information, one or both of a band stacking operation and a channel stacking operation so as to prevent channels/bands being stacked on each other or being overlapped. The signal processing circuit may perform, based on the generated information, frequency corrections for channel tuning in a gateway.

Abstract: An ultrawideband radio transceiver/repeater provides a low cost infrastructure solution that merges wireless and wired network devices while providing connection to the plant, flexible repeater capabilities, network security, traffic monitoring and provisioning, and traffic flow control for wired and wireless connectivity of devices or networks. The ultrawidebande radio transceiver/repeater can be implemented in discrete, integrated, distributed or embedded forms.

Abstract: Systems and methods are described for robust scheduling of beam switching patterns in satellite communications systems. Embodiments operate in context of a hub-spoke satellite communications architecture having a number of gateway terminals servicing large numbers of user terminals over a number of spot beams. The satellite includes switching subsystems that distribute capacity to the user beams from multiple of the gateway terminals in a shared manner according to a beam group switching pattern. The beam group switching pattern is robustly formulated to continue distributing capacity during gateway outages (e.g., when one or two gateway terminals are temporarily non-operational due to rain fade, equipment failure, etc.). For example, the beam group switching pattern can be formulated to minimize worst-case degradation of capacity across user beams, to prioritize certain beams or beam groups, etc.

Abstract: Methods, systems, and apparatuses are presented for improved satellite communications. The satellite system may comprises at least one gateway, a satellite in orbit configured to communicate with the at least one gateway and provide a plurality of spot beams, and a plurality of subscriber terminals. The spot beams may include a first spot beam to illuminate a first region and a second spot beam to illuminate a second region adjacent to and overlapping with the first region. The first spot beam as sent to at least one subscriber terminal may be affected by (1) interference from other signal sources including the second spot beam at a signal-to-interference ratio C/I and (2) noise at a signal-to-noise ratio C/N. Reception of signals from the first spot beam by the at least one of the first plurality of subscriber terminals may be interference-dominated such that C/I is less than C/N.

Abstract: A satellite communication system designed to communicate with wireless communication devices (WCDs) by use of a mosaic pattern of signal beams uses multiple beams to augment the communication with individual WCDs. In addition to communication with a WCD through a primary beam for that WCD, adjacent beams are used, but with signals utilizing circuit parameters assigned to the primary beam. The signals from a given WCD are relayed in a backhaul, either as an aggregate signal processed by the satellite, or as backhaul communication signals to be combined or separated on the ground.

Abstract: An ultrawideband radio transceiver/repeater provides a low cost infrastructure solution that merges wireless and wired network devices while providing connection to the plant, flexible repeater capabilities, network security, traffic monitoring and provisioning, and traffic flow control for wired and wireless connectivity of devices or networks. The ultrawideband radio transceiver/repeater can be implemented in discrete, integrated, distributed or embedded forms.

Abstract: Devices and methods are provided for providing self-timing and self-locating in an access point (AP) base station. In one embodiment, the method involves receiving Satellite Positioning System (SPS) signals from a first data source (e.g., plurality of satellites), wherein the SPS signals may include SPS time data, SPS frequency data, and SPS position data. The method may further involve obtaining from a second data source (e.g., cell site, terrestrial navigation station, server, user input interface, etc.) at least one of second time data, second frequency data and second position data, and determining relative reliability of the first and second data sources.

Abstract: A single, large-scale satellite access communication network may be configured as infrastructure for many small-scale subnets, wherein each subnet may be configured to serve a different organization (e.g. an SME) as a private network. Each subnet may be configured as a small star and/or mesh satellite data access network from the end-user perspective, yet all subnets may be configured to be part of the total large-scale network and share satellite bandwidth resources. Such configuration may yield significantly higher bandwidth efficiency, lower operation and equipment costs, minimized latency and ease of network operations for each of the small organizations sharing the large-scale network.

Abstract: There is provided a method for improving an allocation of resources, i.e., frequency and power, to terrestrial services and satellite services that use a same frequency band. The method includes determining a demand (DS) for a resource by users of a satellite system, determining a demand (DT) for the resource by users of a terrestrial system, and allocating the resource between the satellite system and the terrestrial system based on a ratio of DS to DT.

Abstract: A device and method for executing a reserved function using time information extracted from a broadcasting data that provides a correct time in asynchronous mobile communication terminal are provided. The method of executing a reserved function in a mobile communication terminal includes: when a broadcasting function is executed, performing (1) extracting a time information from received broadcasting data, (2) calculating a time difference between a time of the extracted time information and a corresponding operating time of the mobile communication terminal, and (3) storing the calculated time difference as a time difference information; and if a reservation time for executing a specific function is set and when the operating time reaches the set reservation time based on the stored time difference information, executing the specific function.

Abstract: A method for protecting communications between an aircraft and a spacecraft in outer space including flying the aircraft in the earth's atmosphere at an altitude above 40,000 feet from the earth, and preferably above 50,000 feet, and transmitting a signal from the aircraft to the spacecraft having a frequency within a range of 50-70 GHz. The method includes selecting the frequency of the signal based on the altitude of the aircraft and the elevation angle between the spacecraft the aircraft.