Abstract: A communication apparatus of an earth station to avoid frequency interference with a terrestrial communication system is provided. The communication apparatus may include a signal extractor configured to acquire a signal of a terrestrial radio station by cancelling a signal transmitted by the earth station from received signals, a detector configured to detect an interference state between a satellite communication network and a terrestrial communication network by comparing a signal strength of the signal of the terrestrial radio station to a predetermined interference signal threshold, and a frequency allocator configured to allocate a new frequency slot to be used by the earth station to transmit a signal, when the detector detects the interference state.

Abstract: An apparatus and method of dynamically managing resources for interference control of a satellite and terrestrial integrated communication system is disclosed, the apparatus including a frequency band determiner to determine a frequency band of a satellite beam and a frequency band of a wireless signal based on information on interference between the satellite beam and the wireless signal to which a frequency band identical to the satellite beam is allocated, and a remote controller to remotely control a space-based station to output a satellite beam at an intensity corresponding to a frequency band of a satellite beam, and an earth-based station to output a wireless signal at an intensity corresponding to a frequency band of a wireless signal.

Abstract: A satellite in a multi-beam satellite communication system selects at least some active beams based on a traffic demand of each beam and channel status information of each beam, and allocates a bandwidth and a communication capacity to each active beam such that power flux density (PFD) level of each beam has the same predetermined value.

Abstract: Disclosed is an apparatus and method of selecting spot beams to be actually used based on a traffic demand and a signal attenuation of each spot beam, and activating the selected spot beams in a satellite communication system having multiple spot beams. A control apparatus of a multi-spot beam satellite may include a beam selector to select, from among a plurality of spot beams, at least one spot beam to be assigned with a transmission resource, and an assignment resource determining unit to determine a transmission resource to be assigned to the selected at least one spot beam.

Abstract: A satellite in a multi-beam satellite communication system selects at least some active beams based on a traffic demand of each beam and channel status information of each beam, and allocates a bandwidth and a communication capacity to each active beam such that power flux density (PFD) level of each beam has the same predetermined value.

Abstract: Disclosed is an apparatus and method of selecting spot beams to be actually used based on a traffic demand and a signal attenuation of each spot beam, and activating the selected spot beams in a satellite communication system having multiple spot beams. A control apparatus of a multi-spot beam satellite may include a beam selector to select, from among a plurality of spot beams, at least one spot beam to be assigned with a transmission resource, and an assignment resource determining unit to determine a transmission resource to be assigned to the selected at least one spot beam.

Abstract: An apparatus and method for generating brain waves for dieting of a user are disclosed. The brain wave generating apparatus may include a brain wave detection unit to detect whether brain waves related to an increase in appetite are generated from a user; and a brain wave generation unit to generate brain waves related to suppression of appetite when the brain waves related to the increase in appetite are generated from the user.

Abstract: A beam bandwidth allocation method, which is performed by a satellite earth station in a multi-spot beam satellite system, is provided. The beam bandwidth allocation method includes collecting information on a plurality of spot beams and allocating the same power to each of the spot beams and determining bandwidth to be allocated to each of the spot beams based on the collected information.