Abstract:
Disclosed is a glasses apparatus using an eyesight-based virtual image, including: an image photographing unit configured to adjust a focus for photographing an image based on user eyesight information; an image converter configured to convert the image photographed by the image photographing unit into a 3D image; and a display unit to which the 3D image converted by the image converter is projected.
Abstract:
An operation method of an unmanned aerial vehicle terminal. The unmanned aerial vehicle terminal generates a beam table by using first information on a plurality of beams transmitted by a first transmission point. The unmanned aerial vehicle terminal monitors whether conditions for beam switching are satisfied. The unmanned aerial vehicle terminal determines a target location based on the beam table when the conditions for the beam switching are satisfied. The unmanned aerial vehicle terminal moves to the target location. In addition, the unmanned aerial vehicle terminal updates the beam table depending on whether beam table update conditions are satisfied.
Abstract:
A method and an apparatus for selective discovery using a customer category in a device-to-device (D2D) communication service is disclosed. A method of selectively discovering service providing devices that provide services via D2D communication using a mobile communication network includes receiving, by a server for managing information about the service providing devices, information about a user equipment from the user equipment, verifying whether the user equipment corresponds to a preset customer category using the received information about the user equipment based on a service customer category table including information about a customer category that is the information about the user equipment provided with the services of the service providing devices, and selectively transmitting information about the services provided by the service providing devices to the user equipment based on a verification result.
Abstract:
A method of selecting a plurality of cells and a method of distributed-transmitting data to enhance mobile data transmission rate in a wireless overlay network are disclosed. A cell selection method which selects a cell for distributed-transmission of data in a wireless overlay network of a plurality of cells may include receiving, by a base station, a request for distributed data transmission from a mobile terminal, and selecting a plurality of wireless communication devices for distributed-transmission of data to the mobile terminal among adjacent wireless communication devices to the mobile terminal based on received signal strength (RSS) information on the mobile terminal with respect to the adjacent wireless communication devices, available resource information on the adjacent wireless communication devices and a service profile of the mobile terminal.
Abstract:
Disclosed is a method and apparatus for scheduling in a cellular-based device-to-device (D2D) communication. The method of scheduling a cellular resource used in a base station for a D2D communication between terminals may include grouping, by a proximity coordinator, a cellular resource of an adjacent base station based on cell information of a base station, managing a resource to be allocated to the terminal and a resource allocated previously to the terminal based on the grouped resource, and allocating the grouped resource to the terminal based on information associated with the resource to be allocated and the previously allocated resource when a request for D2D communication between terminals located in different cells is received.
Abstract:
Disclosed is a method and apparatus for resource allocation based on a buffer status in a neighboring cell. A method of allocating a resource between base stations may include receiving, by a first base station, information associated with a buffer status of a second base station, comparing information associated with a buffer status of the first base station to the information associated with the buffer status of the second base station, and relatively allocating a resource based on a result of the comparison.
Abstract:
Disclosed is a method and an apparatus for device-to-device (D2D) multicast communication in a cellular mobile communication system. The method for D2D communication may include transmitting a server designation request message requesting registration as a server terminal to a base station, and transmitting service information using a D2D multicast or broadcast communication scheme based on a radio resource allocated by the base station.
Abstract:
Disclosed is a proximity measurement method and apparatus for device-to-device (D2D) communication in a mobile communication system. The proximity measurement method may include determining whether a cell identification (ID) is included in a packet received from a gateway, verifying whether the cell ID matches a pre-stored cell ID when the cell ID is included, extracting, from the packet, Internet Protocol addresses of mobile terminals transmitting and receiving the packet when the cell ID matches the pre-stored cell ID, searching for IP addresses matched to the extracted IP addresses based on a proximity list including IP addresses of mobile terminals performing D2D communication, and registering, when the extracted IP addresses are absent in the proximity list, the extracted IP addresses in the proximity list and measuring proximity between the mobile terminals.
Abstract:
There is provided a method for synchronization between one or more base stations to provide broadcast multicast service, including: receiving a session start request message, and extracting a service start setting time set to start broadcast service from the session start request message; comparing the service start setting time to a modification check time being a check time which is later than and closest to the service start setting time, among check times at which it is determined whether or not broadcast service has changed, the check times having a predetermined time interval; deciding, when the modification check time is later than the service start setting time by a predetermined internal slack time period or more, the modification check time as a service start time at which broadcast service starts; and transmitting information indicating the service start time to the base stations.