Abstract: The device for controlling a wireless access point comprises: a grouping unit which groups wireless access points which use the same channel, by using channel use information received from the wireless access points; a map generator which computes each received signal strength value of the grouped wireless access points and each output strength value of the grouped wireless access points; an extractor which extracts a wireless access point having the highest received signal strength value among the grouped wireless access points, if interference occurs between said grouped wireless access points; and an optimal output strength value-calculator which computes a corrected output strength value by using the received signal strength value of the extracted wireless access point, a threshold value of predetermined received signal strength, and a currently used output strength value between said grouped wireless access points.

Abstract: Described embodiments provide an apparatus and method for selectively providing system information in a heterogeneous network environment including a first network overlaid on a second network. The apparatus may include a location determination unit, a mapping table, and a signal processor. The location determination unit may be configured to determine a first network base station in the first network. The mapping table may be configured to store information on at least one second network cell in a second network, which is spatially in a comparatively close distance to each first network base station in the first network. The signal processor may be configured to determine at least one second network cell spatially close to the determined first network base station based on the mapping table and to transmit system information of the at least one second network cell to the user equipment.

Abstract: Described embodiments provide a method for processing an uplink signal in a radio unit. A first uplink signal may be received directly from user equipment. The received uplink signal may be delayed using uplink delay information. A second uplink signal may be received indirectly from user equipment through at least one repeater connected to the radio unit. The delayed first uplink signal and the second uplink signal may be combined and transmitted to a digital unit.

Abstract: Described embodiments provide a method of a circuit switched (CS) fallback procedure at a first network providing only a packet switched (PS) service. A CS fallback procedure may be initiated upon a receipt of a call associated with a CS service. One of carriers assigned to a second network that provides a circuit switched (CS) service may be selected. Then, a second network cell mapped to a serving cell of the first network and using the selected carrier may be selected as a target cell. The user equipment may be handed over o to the selected second network cell in order to provide a requested CS service.

Abstract: A method and an apparatus for testing a throughout of a wireless access point apparatus are provided. The apparatus includes a receiver which is configured to receive a test start request signal and a test packet transmission condition change request signal, a test signal generator which is configured to generate a test packet signal; a transmission condition adjuster configured to adjust the transmission condition of the test packet signal; a transmitter configured to transmit the test packet signal to the neighboring access point apparatus under the transmission condition, which is adjusted by the transmission condition adjuster; and a test executor configured to execute a test having a predetermined sequence so as to execute a throughput test for the neighboring access point apparatus with regards to receiving the test packet signal.

Abstract: An apparatus for wireless relaying comprises: a transmission unit for generating a wireless signal; an amplification unit for amplifying and outputting the wireless signal; a conversion unit for converting the wireless signal into a digital signal; and an adjustment unit for adjusting the amplification ratio of the amplifying unit so that the difference between an output level value of the digital signal and a predetermined target power is lower than a predetermined numerical value.

Abstract: The disclosure is related to measuring macrocell quality of a macrocell using femtocells. A method may be provided for measuring macrocell quality of at least one macrocell using a femtocell base station. The method may include measuring, by the femtocell base station, macrocell quality of at least one macrocell based on event information, generating macrocell quality report information based on a result of the measuring, and transmitting the generated macrocell quality report information to a server through a femtocell gateway. The measuring macrocell quality may include determining whether a macrocell identifier is present in the event information, measuring the macrocell quality of a target macrocell corresponding to the mermen identifier of the event when the macrocell identifier is present in the event information, and measuring the macrocell quality of substantially all neighbor macrocells when the macrocell identifier is absent from the event information.

Abstract: A method and apparatus for testing signal reception sensitivity of a wireless access point are provided. The apparatus includes a receiver which is configured to receive a test start request signal, a transmission power level change request signal and a test packet retransmission request signal from a neighboring access point apparatus; a test signal generator which is configured to generate a test packet signal to be transmitted to the neighboring access point apparatus; a transmission power level adjuster which is configured to adjust a transmission power level of the test packet signal; a transmitter which is configured to transmit the test packet signal to the neighboring access point apparatus with a power having a level adjusted by the transmission power level adjuster; and a test executor which is configured to execute a test program having a predetermined sequence for testing a signal reception sensitivity of the neighboring access point apparatus.

Abstract: The disclosure is related to handover for user equipment between femtocell base stations having different closed subscriber group (CSG) identifiers. A method may be provided for allowing handover of user equipment between base stations belonging to different organizations. The method may include collecting, by a first base station, information corresponding to identifiers of neighbor base stations, selecting handover-allowable base stations from the neighbor base stations having an organization identifier different from that of the first base station, and enabling handover for the user equipment from the first base station to a second base station based on the selected handover-allowable base stations for a handover request of the user equipment from the first base station to the second base station.

Abstract: The disclosure is related to a method of adaptive call admission control in a base station. When a call access request is received from a user equipment determination may be made as to whether an available call admission capacity of the base station reaches a first limit. When the available call admission capacity of the base station reaches the first limit determination may be made as to whether the received call access request is for a preferred call. Then, determination may be made as to whether a reserved call admission capacity reaches a second limit when the received call access request is for the preferred call. When the reserved call admission capacity has not reached a second limit, access of the user equipment associated with the received call access request may be allowed.

Abstract: Provided are femtocell base stations and a management system therefor establishing an X2 interface between femtocell base stations. The method may include obtaining, by the femtocell base station, an Internet Protocol (IP) address of one or more neighbor femtocell base stations, and establishing the X2 interface between the femtocell base station and the neighbor femtocell base station using the corresponding, obtained IP address.

Abstract: Described embodiments provide a method of a circuit switched (CS) fallback procedure at a first network providing only a packet switched (PS) service. A CS fallback procedure may be initiated upon a receipt of a call associated with a CS service. One of carriers assigned to a second network that provides a circuit switched (CS) service may be selected. Then, a second network cell mapped to a serving cell of the first network and using the selected carrier may be selected as a target cell. The user equipment may be handed over o to the selected second network cell in order to provide a requested CS service.

Abstract: Described embodiments provide a method of effectively selecting a target cell to hand over user equipment from a LTE network to a non-LTE network when the user equipment requests a CS service. A LTE cell may determine a CS fallback hysteresis parameter in advance. The LTE cell may receive signal quality measurements of at least two candidate non-LTE cells from the user equipment. The LTE cell may select one target cell among the at least two candidate non-LTE cells based on the CS fallback hysteresis parameter and the received signal quality measurements of the at least two candidate non-LTE cells.

Abstract: Described embodiments provide controlling signal transmission in a plurality of radio units. The plurality of radio units may be coupled to a digital unit. The digital unit may be spatially separated from the plurality of radio units. Signal quality measurements may be received from multiple radio units when a user equipment is located within an overlapping service area of the multiple radio units. Determination may be made as to whether to simultaneously use at least two of the multiple radio units to transmit a data signal to the user equipment based on the received signal quality measurements. At least two of the multiple radio units may be controlled to transmit a same data signal to the user equipment using a same channel based on the determination result.

Abstract: A wireless access point and a method may be provided for detecting a malicious device in a network. The wireless access point may include a controller, a search unit, a message generation unit, and a determination unit. The controller may be configured to initiate a malicious device detection mode regularly at predefined intervals. The search unit may be configured to detect candidate devices broadcasting a signal with the first SSID from neighbor devices in an associated network. The message generation unit may be configured to generate a test message in the malicious device detection mode and transmit the test message to the candidate devices. The determination unit may be configured to determine a corresponding device in the candidate device as a malicious device when a test response message is not received from the corresponding device in response to the test message.

Abstract: The disclosure is related to measuring macrocell quality of a macrocell using femtocells. A method may be provided for measuring macrocell quality of at least one macrocell using a femtocell base station. The method may include measuring, by the femtocell base station, macrocell quality of at least one macrocell based on event information, generating macrocell quality report information based on a result of the measuring, and transmitting the generated macrocell quality report information to a server through a femtocell gateway. The measuring macrocell quality may include determining whether a macrocell identifier is present in the event information, measuring the macrocell quality of a target macrocell corresponding to the mermen identifier of the event when the macrocell identifier is present in the event information, and measuring the macrocell quality of substantially all neighbor macrocells when the macrocell identifier is absent from the event information.

Abstract: The disclosure is related to handover for user equipment between femtocell base stations having different closed subscriber group (CSG) identifiers. A method may be provided for allowing handover of user equipment between base stations belonging to different organizations. The method may include collecting, by a first base station, information corresponding to identifiers of neighbor base stations, selecting handover-allowable base stations from the neighbor base stations having an organization identifier different from that of the first base station, and enabling handover for the user equipment from the first base station to a second base station based on the selected handover-allowable base stations for a handover request of the user equipment from the first base station to the second base station.

Abstract: The disclosure is related to controlling an operation bandwidth for a femtocell based on femtocell interference to a macrocell in order to minimize femtocell interference. A femtocell base station may include a measurement unit, a transmitting unit, and a control unit. The measurement unit may be configured to measure an interference amount of a macrocell adjacent to the femtocell base station. The transmitting unit may be configured to transmit the measured interference amount to a system. The control unit may be configured to i) accept an allocated operation bandwidth by the system and ii) control transmission and reception of signals with the allocated operation bandwidth. The operation bandwidth may be adjustable by the system based on the measured interference amount.

Abstract: Provided are femtocell base stations and a management system therefor establishing an X2 interface between femtocell base stations. The method may include obtaining, by the femtocell base station, an Internet Protocol (IP) address of one or more neighbor femtocell base stations, and establishing the X2 interface between the femtocell base station and the neighbor femtocell base station using the corresponding, obtained IP address.