Abstract: Provided is an intelligent disaster management method and an apparatus using a satellite image. The disaster management method includes receiving a satellite image to monitor a disaster, setting a location of an area for disaster monitoring and a type of disaster to be monitored and selecting at least one satellite image associated with the location of the area and the type of disaster among the received satellite images through a satellite image selection model, synthesizing the selected satellite images through a satellite image synthesis model and generating disaster image data which enables to monitor a disaster, and monitoring a disaster of the area for disaster monitoring by using the disaster image data.

Abstract: Disclosed are a method and an apparatus for determining displacement information of a target area by using information that is present in an image frame. The method of determining displacement information according to an embodiment of the present disclosure may include: setting a target area in which an object that displacement information determination thereof is required is positioned within a target frame; determining a tracking area in a tracking frame based on displacement information of at least one neighboring target area that is positioned around the target area; and determining a matching area that matches with the target area in the tracking area and determining the displacement information of the target area.

Abstract: Disclosed are a method of upsampling based on a maximum-resolution image and red, green and blue (RGB) composition and an apparatus performing the same. An image generating method may include acquiring visible-channel images included in multi-spectrum images, upsampling a remaining image excluding a maximum-resolution image from the visible-channel images, based on the maximum-resolution image among the visible-channel images, and generating an RGB composite image by composing the upsampled remaining image and the maximum-resolution image.

Abstract: A method of restoring an image is disclosed. The method may include obtaining multispectral images of an identical object using a plurality of different channels, identifying a noise image including a noise among the multispectral images, determining reference images to be used to restore the noise image among the multispectral images, detecting a noise area of the noise image based on a relationship between the noise image and the reference images, and restoring the detected noise area using pixels of the reference images.

Abstract: A method of randomizing a size of a packet is provided. A randomization method may include recognizing a maximum segment size (MSS) defined for transmission and reception of a packet with a reception terminal, and randomizing a size of the packet to be less than the MSS.

Abstract: Disclosed are a method and an apparatus for determining displacement information of a target area by using information that is present in an image frame. The method of determining displacement information according to an embodiment of the present disclosure may include: setting a target area in which an object that displacement information determination thereof is required is positioned within a target frame; determining a tracking area in a tracking frame based on displacement information of at least one neighboring target area that is positioned around the target area; and determining a matching area that matches with the target area in the tracking area and determining the displacement information of the target area.

Abstract: Provided is a communication method for downlink transmission with a low peak to average power ratio (PAPR) and compatibility with long-term evolution (LTE)-based downlink transmission in an LTE-based mobile communication system in which the performance degradation may occur due to a high PAPR in multi-carrier transmission caused by non-linearity of a power amplifier in a base station including a satellite, to have the effects of supporting a terminal that reuses an existing terrestrial LTE chipset and a terminal that enables downlink reception with a low PAPR with no collision between the terminals, and of implementing an integrated satellite/terrestrial mobile communication system with a minimum change of an existing mobile communication system to ensure economic efficiency.

Abstract: A random access method in a mobile communication system, the random access method for supporting random access with a cell size of about 100 kilometers (km) or more and a power limited terminal, and a preamble structure thereof are provided. While a conventional long term evolution (LTE) random access preamble sequence is reused, a difference in a round-trip delay time between terminals in a large cell area may be compensated. Additionally, since higher power transmission is achieved per bandwidth, a higher link margin may be secured. Also, compatibility with resource scheduling of the conventional LTE may be maintained. Random access may be supported in a large cell, and a preamble structure of a satellite mobile communication may be implemented based on terrestrial LTE.

Abstract: Provided is a power control and link adaptation method for compensating for a long round trip delay time and slow channel fading in a long term evolution (LTE)-based mobile communication system having a long round trip delay time, similar to a satellite mobile system, the method that may compensate for the long round trip delay time of the satellite mobile system in which a distance between a base station and a terminal is relatively long, when compared to a terrestrial LTE system, support a modulation and coding scheme (MCS) level requested by a terminal, by predicting a channel after the round trip delay time elapses, maintain compatibility within an existing LTE frame, by generating a transmit power control (TPC) instruction for an uplink closed-loop power control, on a frame by frame basis, and compensate for slow channel fading of the satellite mobile system.

Abstract: A wireless power charging apparatus and method are provided, which recognizes location information of at least one wireless power receiving apparatus; selects at least one of at least one wireless power transmitter that supplies power to the at least one wireless power receiving apparatus based on the location information; and supplies power to the at least one wireless power receiving apparatus through the at least one selected wireless power transmitter.

Abstract: A transmission apparatus and method for implementing frequency selectivity in a multi-beam satellite system that transmits a signal to user equipment through one or more antenna feed groups. The transmission apparatus includes: an antenna feed group selecting unit configured to select one or more antenna feed groups from the one or more antenna feed groups; a cyclic delay offset determining unit configured to determine a cyclic delay offset according to a determination result of the antenna feed group selecting unit; and a transmitting unit configured to apply the cyclic delay offset determined by the cyclic delay offset determining unit to a signal to be transmitted through the one or more antenna feed groups selected by the antenna feed group selecting unit, and to transmit a resultant signal.

Abstract: First resource blocks of a radio resource each include a first number of subcarriers and a second number of subframes having the first size. In this case, second resource blocks are formed, each second resource block including fewer subcarriers than the first number and fewer subframes than the second number based on the first resource blocks. A signal is transmitted in the first resource block or second resource block, and particularly, signals of first and second channels are transmitted by sharing the first resource block.

Abstract: Disclosed are an apparatus and a method for normally receiving data by accurately estimating and compensating for a frequency offset for a wireless frequency channel through which data are transmitted in a communication system under wireless frequency environment. In the present invention, data transmitted through the wireless frequency channel are received, the frequency offset in the wireless frequency channel from the receive data is estimated based on an interpolation scheme using the periodogram, and the frequency offset is compensated to receive the data by frequency-synchronizing with the wireless frequency channel.

Abstract: In a system that performs mobile communication using at least two beams, by determining a size of a beam based on information that is acquired for mobile terminals attempting an access, a beam of a form having an adaptive size is formed and thus communication is performed. A beam sector including a plurality of beam segments and a beam segment that forms a beam of a minimum size within entire coverage is set, and while forming one beam per beam sector, a size of a beam is adaptively determined.

Abstract: A random access method in a mobile communication system, the random access method for supporting random access with a cell size of about 100 kilometers (km) or more and a power limited terminal and a preamble structure thereof are provided. While a conventional long term evolution (LTE) random access preamble sequence is reused, a difference in a round-trip delay time between terminals in a large cell area may be compensated. Additionally, since higher power transmission is achieved per bandwidth, a higher link margin may be secured. Also, compatibility with resource scheduling of the conventional LTE may be maintained. Random access may be supported in a large cell, and a preamble structure of a satellite mobile communication may be implemented based on terrestrial LTE.

Abstract: Provided is a power control and link adaptation method for compensating for a long round trip delay time and slow channel fading in a long term evolution (LTE)-based mobile communication system having a long round trip delay time, similar to a satellite mobile system, the method that may compensate for the long round trip delay time of the satellite mobile system in which a distance between a base station and a terminal is relatively long, when compared to a terrestrial LTE system, support a modulation and coding scheme (MCS) level requested by a terminal, by predicting a channel after the round trip delay time elapses, maintain compatibility within an existing LTE frame, by generating a transmit power control (TPC) instruction for an uplink closed-loop power control, on a frame by frame basis, and compensate for slow channel fading of the satellite mobile system.

Abstract: Provided is a communication method for downlink transmission with a low peak to average power ratio (PAPR) and compatibility with long-term evolution (LTE)-based downlink transmission in an LTE-based mobile communication system in which the performance degradation may occur due to a high PAPR in multi-carrier transmission caused by non-linearity of a power amplifier in a base station including a satellite, to have the effects of supporting a terminal that reuses an existing terrestrial LTE chipset and a terminal that enables downlink reception with a low PAPR with no collision between the terminals, and of implementing an integrated satellite/terrestrial mobile communication system with a minimum change of an existing mobile communication system to ensure economic efficiency.

Abstract: A method of forming a beam and a method of allocating a resource in a long term evolution (LTE)-based mobile communication system are provided. More particularly, a method of forming an adaptive satellite multiple beam for enhancing multiple beam performance and a method of allocating a resource that can relieve interference in a beam that is formed according to the method in a multiple beam system in which satellite communication and mobile communication is coupled based on LTE are provided. When providing a communication service that supports both satellite communication and ground communication, performance degradation can be reduced with the same interface, and by providing a method of forming an adaptive beam and a method of allocating a resource by relieving interference of the formed beam in consideration of a position of the terminal by independently allocating a subcarrier to the terminal and enabling the terminal to process the subcarrier, performance of a multiple beam can be improved.

Abstract: A method of designing and communicating a beam in a communication system is provided. More particularly, a method of designing and communicating a beam in a communication system using carrier aggregation in order to increase a maximum data rate in a multiple beam mobile communication system is provided. By applying carrier aggregation, a maximum data rate can be improved.

Abstract: Provided is a system for detecting an accident location, including: a navigation apparatus to extract identification information of a preinstalled apparatus, first distance information between the apparatus and at least one base station, and second distance information between the apparatus and a geostationary satellite, when an impact is applied to the apparatus; and an apparatus control center to compute location information of the navigation apparatus based on the identification information, the first distance information, and the second distance information, wherein the at least one base station receives the first distance information from the navigation apparatus and transmits the first distance information to the apparatus control center, and the geostationary satellite receives the second distance information from the navigation apparatus and transmits the second distance information to the apparatus control center.