Abstract: A communication system and a communication method using relay terminals are provided. A communication system includes a base station, a target terminal transmitting uplink data to the base station or receiving downlink data from the base station, and a plurality of relay terminals cooperatively relaying the uplink data/downlink data to the base station/target terminal, the plurality of relay terminals being grouped into at least one group.

Abstract: A system for controlling a station operation mode is provided. The system for controlling a station operation mode, including: a distance information generation unit measuring a distance between a first communication station and a second communication station and generating distance information; a distance information comparison unit comparing the distance information and a predetermined threshold distance; and an operation mode determination unit determining any one of an active mode and an idle mode as an operation mode of the second communication station, based on a comparison result of the distance information comparison unit.

Abstract: A wireless communication system with femtocells and a method for mitigating inter-cell interference in the wireless communication system are provided. The interference control method includes notifying a mobile station of entry to a home cell, when the mobile station enters a macrocell including a femto base station with which the mobile station is registered, transmitting, by the mobile station, a femtocell driving control message to the femto base station at a predetermined transmission power, when the mobile station enters a femtocell of the femto base station, and switching on, by the femto base station, a transmitter, when the femtocell driving control message is received.

Abstract: A method and apparatus allocates a Physical Cell Identifier (PCID) in a wireless communication system by considering a PCID reuse factor. An allowable PCID list is acquired from a server. A set of candidate PCIDs is determined from the allowable PCID list according to PCID allocation conditions. A received signal strength of each cell using the determined set of candidate PCID is determined. At least one PCID is selected by using a PCID reuse factor and the received signal strength of each of the cells using the determined set of candidate PCIDs.

Abstract: A mobile telecommunication and joint resource allocation of a multiple-station and joint group handover. The mobile telecommunication system comprises a utility function processing unit to process a utility function that is a load factor of each cell, a critical set determining unit to determine a critical set based on the utility function, and a resource allocation processing unit to allocate a resource in association with another at least one mobile telecommunication system corresponding to the critical set.

Abstract: An apparatus and method for configuration and optimization of an Automatic Neighbor Relation (ANR) in a wireless communication system are provided. The method of configuring the ANR by a Base Station (BS) in the wireless communication system includes receiving a measurement report message for reporting a neighbor cell's signal quality from one or more User Equipments (UEs), determining a neighbor cell, reported from a UE in an area where a serving cell's signal quality is greater than a first reference value, as an Overlay Neighbor (ON), among neighbor cells reported using the measurement report message, and determining a neighbor cell, reported from a UE in an area where the serving cell's signal quality is less than a second reference value, as a Horizontal Neighbor (HN), among the neighbor cells reported using the measurement report message, wherein the second reference value is set to a value smaller than the first reference value.

Abstract: A mobile system, a mobile system, a method for managing a path in a multi-hop cellular network, and a data frame used in the mobile system. The mobile system includes: an information receiving unit to receive information about at least one of link quality, traffic load, and frequency channel size, via a network; and a path establishment unit to establish a path to a base station based on the received information.

Abstract: Provided is a method of managing a neighbor relation table by a base station in a wireless communication system having a self-organizing network function, which includes receiving a neighbor base station report from a terminal; comparing the neighbor base station report with a stored neighbor relation table; calculating a statistic value of a new base station when the new base station is present in the comparison step; and adding the new base station to the stored neighbor relation table when the statistic value is equal to or greater than a first reference value.

Abstract: A system of controlling a cell coverage is provided. The system includes: a state information generation unit to generate state information by considering at least one of a cell coverage and a traffic load of a target cell; an adjacent state information identification unit to identify adjacent state information which is generated by considering at least one of a cell coverage and a traffic load of an adjacent node, from at least one adjacent node; and a cell coverage control unit to control the cell coverage of the target cell based on the state information and the adjacent state information.

Abstract: A method and apparatus allocates a Physical Cell Identifier (PCID) in a wireless communication system by considering a PCID reuse factor. An allowable PCID list is acquired from a server. A set of candidate PCIDs is determined from the allowable PCID list according to PCID allocation conditions. A received signal strength of each cell using the determined set of candidate PCID is determined. At least one PCID is selected by using a PCID reuse factor and the received signal strength of each of the cells using the determined set of candidate PCIDs.

Abstract: An apparatus and method for configuration and optimization of an Automatic Neighbor Relation (ANR) in a wireless communication system are provided. The method of configuring the ANR by a Base Station (BS) in the wireless communication system includes receiving a measurement report message for reporting a neighbor cell's signal quality from one or more User Equipments (UEs), determining a neighbor cell, reported from a UE in an area where a serving cell's signal quality is greater than a first reference value, as an Overlay Neighbor (ON), among neighbor cells reported using the measurement report message, and determining a neighbor cell, reported from a UE in an area where the serving cell's signal quality is less than a second reference value, as a Horizontal Neighbor (HN), among the neighbor cells reported using the measurement report message, wherein the second reference value is set to a value smaller than the first reference value.

Abstract: A wireless communication system with femtocells and a method for mitigating inter-cell interference in the wireless communication system are provided. The interference control method includes notifying a mobile station of entry to a home cell, when the mobile station enters a macrocell including a femto base station with which the mobile station is registered, transmitting, by the mobile station, a femtocell driving control message to the femto base station at a predetermined transmission power, when the mobile station enters a femtocell of the femto base station, and switching on, by the femto base station, a transmitter, when the femtocell driving control message is received.

Abstract: In a wireless communication network including several macro cells each having several femto cells, when a trigger event occurs for a measurement report, user equipment creates a measurement report message which includes a cell identifier of a target femto cell for the measurement report in response to the trigger event, measuring results for the target femto cell, and a neighbor cell identifier having a cell identifier of at least one neighbor femto cell around the target femto cell. Then the user equipment transmits the measurement report message to an evolved node B (eNB). When receiving the measurement report message, the eNB distinguishes the target femto cell from others in the femto cells based on the neighbor cell identifier in the received measurement report message.

Abstract: A communication system and a communication method using relay terminals are provided. A communication system includes a base station, a target terminal transmitting uplink data to the base station or receiving downlink data from the base station, and a plurality of relay terminals cooperatively relaying the uplink data/downlink data to the base station/target terminal, the plurality of relay terminals being grouped into at least one group.

Abstract: A mobile system, a mobile system, a method for managing a path in a multi-hop cellular network, and a data frame used in the mobile system. The mobile system includes: an information receiving unit to receive information about at least one of link quality, traffic load, and frequency channel size, via a network; and a path establishment unit to establish a path to a base station based on the received information.

Abstract: A mobile telecommunication and joint resource allocation of a multiple-station and joint group handover. The mobile telecommunication system comprises a utility function processing unit to process a utility function that is a load factor of each cell, a critical set determining unit to determine a critical set based on the utility function, and a resource allocation processing unit to allocate a resource in association with another at least one mobile telecommunication system corresponding to the critical set.

Abstract: A system of controlling a cell coverage is provided. The system includes: a state information generation unit to generate state information by considering at least one of a cell coverage and a traffic load of a target cell; an adjacent state information identification unit to identify adjacent state information which is generated by considering at least one of a cell coverage and a traffic load of an adjacent node, from at least one adjacent node; and a cell coverage control unit to control the cell coverage of the target cell based on the state information and the adjacent state information.

Abstract: A system for controlling a station operation mode is provided. The system for controlling a station operation mode, including: a distance information generation unit measuring a distance between a first communication station and a second communication station and generating distance information; a distance information comparison unit comparing the distance information and a predetermined threshold distance; and an operation mode determination unit determining any one of an active mode and an idle mode as an operation mode of the second communication station, based on a comparison result of the distance information comparison unit.