Abstract: Disclosed are a base station and a channel access method performing a channel access in a unlicensed band. The channel access method includes: performing channel sensing at least once on a channel of the unlicensed band in a channel sensing period of a frame; and broadcasting a reservation signal for the channel when the channel is empty.

Abstract: Disclosed is a mobile communication network system and a network configuring method. The communication network system includes: a common control access network; at least one access network slice added according to a service type requested by a device; a common control core network; and at least one core network slice added according to a service type requested by the device. The access network slice and the core network slice are determined by the service type requested by the device.

Abstract: Disclosed herein are a method and an apparatus for configuring a radio resource. In a wireless communication system, a radio resource is split into a plurality of radio resource slices corresponding to different service types and a radio source slice corresponding to a service type among a plurality of radio resource slices that a device requests is determined.

Abstract: A communication method and apparatus using a network slice. A method of performing communication on a control plane of a network system including an access network and a core network may receive an attach request from a user equipment, may perform a mutual authentication with the user equipment in response to the attach request, may retrieve a subscription profile for the user equipment in response to the attach request, when the mutual authentication is completed, and may determine a network slice for the user equipment based on the subscription profile.

Abstract: Disclosed are a base station and a channel access method performing a channel access in a unlicensed band. The channel access method includes: performing channel sensing at least once on a channel of the unlicensed band in a channel sensing period of a frame; and broadcasting a reservation signal for the channel when the channel is empty.

Abstract: According to an exemplary embodiment of the present invention, a master base station selects a target serving cell in which a state is changed, among the serving cells of at least one slave base station set in the terminal, generates a MAC control element which instructs a state change of the target serving cell, and then directly transmits the MAC control element to the terminal in the case of an uplink asynchronous state between the target slave base station managing the target serving cell and the terminal.

Abstract: Disclosed herein are a method and an apparatus for configuring a radio resource. In a wireless communication system, a radio resource is split into a plurality of radio resource slices corresponding to different service types and a radio source slice corresponding to a service type among a plurality of radio resource slices that a device requests is determined.

Abstract: A base station of a mobile communication system divides an ultra wideband into a plurality of unit bands, uses a plurality of beam component carriers corresponding to the L3 CP dedicated unit band as a coverage layer by grouping in one cell in the L3 CP dedicated unit band and uses a plurality of beam component carriers corresponding to the UP dedicated unit band in the UP dedicated unit band as a plurality of capacitor layers by grouping in a plurality of cells of a smaller size than that of the grouping.

Abstract: Disclosed is a mobile communication network system and a network configuring method. The communication network system includes: a common control access network; at least one access network slice added according to a service type requested by a device; a common control core network; and at least one core network slice added according to a service type requested by the device. The access network slice and the core network slice are determined by the service type requested by the device.

Abstract: A UE does not immediately perform handover after receiving a handover command from a serving base station, but instead backups that message and continuously compares the signal strength of a serving base station and the signal strength of a target base station and performs a handover to the target base station at the best timing when handover is required. Once the timing of handover is determined, the UE transmits a handover indication message to the serving base station, and thereafter the UE performs a handover to the target base station.

Abstract: A base station of a mobile communication system divides an ultra wideband into a plurality of unit bands, uses a plurality of beam component carriers corresponding to the L3 CP dedicated unit band as a coverage layer by grouping in one cell in the L3 CP dedicated unit band and uses a plurality of beam component carriers corresponding to the UP dedicated unit band in the UP dedicated unit band as a plurality of capacitor layers by grouping in a plurality of cells of a smaller size than that of the grouping.

Abstract: Disclosed are a method for allocating a resource to a D2D link of a base station, including determining a D2D link resource to be allocated to the D2D link among cellular resources of the base station, and transmitting uplink control information including information on the D2D link resource to at least two terminals which are connected by the D2D link among a plurality of cellular terminals connected to the base station, and a method for transmitting/receiving data to and from a terminal, including: searching for a white space of cellular resources; transmitting a search result for the white space to a base station of coverage to which the terminal belongs; receiving resource information determined depending on the search result; and transmitting/receiving data to and from the adjacent terminals through the D2D link based on the resource information.

Abstract: Provided is an apparatus for super high frequency (SHF)/extremely high frequency (EHF) band wireless transmission on a multi-level configuration. The apparatus may include a list managing unit to receive and manage a first list associated with an SHF/EHF band signal from a terminal connected to a wireless network, a path finding unit to select a path having a communication quality value greater than or equal to a first threshold value by referring to the first list, and a scheduling unit to schedule available SHF/EHF band radio resources for the selected path.

Abstract: The present invention relates to a wireless communication system that supports the mobility management in a small cell environment, the wireless communication system includes a user equipment configured to measure a signal strength of multiple small cells around and transmit the measurement result through a serving cell, and a multiple small base stations configured to store user equipment context information in determined preparation cells among the multiple small cells based on the measurement result, in case that the user equipment context information for cell A among the preparation cells is changed, wherein the multiple small base stations update the changed user equipment context information.

Abstract: An exemplary embodiment of the present invention provides a method for a communication apparatus to process a signal. A first processor of the communication apparatus performs symbol mapping on a first baseband signal transmitted via a PDSCH (physical downlink shared channel). The first processor sends the mapped first baseband signal to a second processor of the communication apparatus by interfacing with the second processor. The second processor modulates the sent first baseband signal. The second processor converts the modulated first baseband signal into an intermediate frequency signal.

Abstract: An exemplary embodiment of the present invention provides a method for managing, by a management system, an enterprise zone. The management system constructs information on a plurality of small cell base stations and at least one terminal. The management system allocates at least one closed subscriber group (CSG) ID to the enterprise zone including cells of the small cell base stations. Further, the management system transmits a message for adding the CSG ID to a whitelist of the terminal to the terminal.

Abstract: According to an exemplary embodiment of the present invention, a master base station selects a target serving cell in which a state is changed, among the serving cells of at least one slave base station set in the terminal, generates a MAC control element which instructs a state change of the target serving cell, and then directly transmits the MAC control element to the terminal in the case of an uplink asynchronous state between the target slave base station managing the target serving cell and the terminal.

Abstract: A discovery method is provided by a terminal in a terminal-to-terminal direct communication terminal-to-terminal direct communication. The terminal broadcasts a sequence, and receives an echo sequence on the sequence from other terminal. The terminal scrambles discovery information with the sequence, and transmits the scrambled discovery information.

Abstract: A method and apparatus for a mobile communication terminal to recognize a target mobile communication terminal using a location recognition system.

Abstract: Provided is a system and method for configuring a multi-hierarchical cell in which a large-scale mobile backhaul technology and a small cell technology are combined. A mobile backhaul may increase a transmission capacity of a wireless backhaul using a super high frequency (SHF)/extremely high frequency (EHF) band, rather than a cellular band having a limitation in extending frequency resources, and a small group cell to be formed at a final end of the mobile backhaul may be configured by fixed group cells or mobile group cells depending on a radio environment, using a moving relay, wireless fidelity (WiFi), femto-cells, and the like, whereby cells may be miniaturized effectively, and a relatively great capacity of a wireless system may be provided to a subscriber.