Abstract: The present invention relates to a method in which a first station receives position information using a second station positioned in the vicinity of the first station. The method includes the steps of: receiving a station identifier (STID) and at least one fake identifier (ID) from a base station; obtaining a fake ID of the second station; requesting position information on the second station from the base station using the fake ID of the obtained second station; and receiving the position information on the second station of the base station, wherein the fake ID is an identifier used for position measurement and is mapped to the STID.

Abstract: The present invention relates to a wireless communication system. More specifically, the present invention relates to a method for scheduling a terminal in a wireless communication system permitting overlapping between base station clusters, and an apparatus therefor, the method comprising the steps of: grouping a plurality of terminals into a plurality of groups satisfying predetermined conditions; and selecting one more terminals for scheduling by means of a group-based greedy algorithm for each of the plurality of groups, wherein, in the group-based greedy algorithm, a check is skipped for whether the total number of base station antennas corresponding to each group is equal to or greater than the number of terminals selected from each group.

Abstract: An apparatus and method for selecting a processor clock speed and a wireless network are disclosed. The method for selecting a processing speed of a processor and/or a wireless network to be connected in a User Equipment (UE) in a wireless communication system includes detecting states of a processor-related queue and a network module-related queue, and selecting a processing speed of the processor-related queue and/or a wireless network to be connected, based on the detected states of the processor-related queue and the network module-related queue and power consumptions of a processor and a network module. The processing speed of the processor-related queue and/or the wireless network to be connected are selected to keep a difference between a length of the processor-related queue and a length of the network module-related queue at a predetermined value and minimize the power consumptions of the processor and the network module.

Abstract: Specifically, according to one embodiment of the present invention, a method for operating a base station that assigns frequency resources to terminals in a wireless communication system is provided. The method comprises the steps of calculating a first metric using information relating to the transmission rate of each terminal; calculating a second metric using information relating to a proportion of a group to which each of the terminals belongs; determining a terminal to which a frequency resource is assigned on the basis of the calculated first and second metrics; assigning the resource to the determined terminal; and updating the information relating to the transmission rate for each terminal and the information relating to proportion of a group.

Abstract: A method for controlling inter-cell interference in a wireless communication system includes receiving information about an interference control period from a central controller, performing carrier sensing based activation competition in the interference control period, and scheduling user equipments served by the BS if the BS wins the carrier sensing based activation competition. The carrier sensing based activation competition may be based on a BS-specific back-off value related to a BS-specific weight. The BS-specific weight may be determined as the sum of products of an instantaneous throughput and a differential value of an average throughput based utility function, for all UEs served by the BS.

Abstract: Specifically, according to one embodiment of the present invention, a method for searching for an access point is provided. The method for searching may comprises the steps of: a terminal measuring the position thereof; checking an access point located near the measured position of the terminal; determining whether or not the distance between the terminal and the access point is greater than the radius range searchable by the terminal; and searching for the access point when the distance between the terminal and the access point is less than the radius range.

Abstract: The present application relates to a method for central node (CN) to remove inter-cell interference of an access point (AP) in a wireless access system according to the present invention, including: receiving feedback information at each time slot from a plurality of APs, the feedback information including channel measurement information between terminals in each AP and the coverage of each AP, or position information of each AP; obtaining a preference for each pattern, the pattern representing an ON or OFF operation of each AP at each time slot; determining a target time rate of each pattern on the basis of the obtained preference for each pattern; receiving an instantaneous transfer rate of terminals in the coverage of each AP for each pattern from the plurality of APs; and determining a pattern in order to minimize reference between each AP according to the received instantaneous transfer rate.

Abstract: An apparatus and a method for reserved transmission of non-real-time content in a heterogeneous network environment are disclosed. According to the present disclosure, a method for performing reserved transmission of non-real-time content in a heterogeneous network environment comprises receiving a transmission reservation option from either a mobile terminal user or a server, collecting information on networks accessible by the mobile terminal and data transmission rate on a regular basis, performing scheduling of whether to transmit data over a currently accessible network, based on the received transmission reservation option and the collected information on the accessible networks and the data transmission rate, and repeating data transmission according to the scheduling until transmission of the content is completed.

Abstract: The present invention relates to a method in which an upper layer entity allocates resources to a plurality of access points (APs) in a wireless access system, including the plurality of APs and the upper layer entity for managing the plurality of APs, the method comprising the step of: sensing a change in minimum guaranteed resource amount allocated to each of the APs; acquiring, from each of the APs, AP-level topology information according to a degree of interference with adjacent APs and AP weight information given to each AP by a service provider; determining a minimum guaranteed resource amount for each of the APs based on the acquired AP-level topology information and AP weight information; and transmitting the determined minimum guaranteed resource amount to each of the APs.

Abstract: The present invention relates to a method in which a first station receives position information using a second station positioned in the vicinity of the first station. The method includes the steps of: receiving a station identifier (STID) and at least one fake identifier (ID) from a base station; obtaining a fake ID of the second station; requesting position information on the second station from the base station using the fake ID of the obtained second station; and receiving the position information on the second station of the base station, wherein the fake ID is an identifier used for position measurement and is mapped to the STID.

Abstract: The present invention relates to a method for a base station to manage resources in order to perform beamforming in a wireless access system, the method being characterized by comprising the steps of: receiving cluster information from a cluster head; and determining, on the basis of the received cluster information, terminals to be scheduled in a cluster including the cluster head, wherein the cluster information comprises location and channel gain information for the terminals belonging to the cluster including the cluster head.

Abstract: A method for controlling inter-cell interference in a wireless communication system is disclosed. The method is performed by a base station (BS) and includes receiving information about an interference control period from a central controller; performing carrier sensing based activation competition in the interference control period, and scheduling user equipments served by the BS if the BS wins the carrier sensing based activation competition, wherein the carrier sensing based activation competition is based on a BS-specific back-off value related to a BS-specific weight.

Abstract: An apparatus and method for selecting a processor clock speed and a wireless network are disclosed. The method for selecting a processing speed of a processor and/or a wireless network to be connected in a User Equipment (UE) in a wireless communication system includes detecting states of a processor-related queue and a network module-related queue, and selecting a processing speed of the processor-related queue and/or a wireless network to be connected, based on the detected states of the processor-related queue and the network module-related queue and power consumptions of a processor and a network module. The processing speed of the processor-related queue and/or the wireless network to be connected are selected to keep a difference between a length of the processor-related queue and a length of the network module-related queue at a predetermined value and minimize the power consumptions of the processor and the network module.

Abstract: The present application relates to a method for central node (CN) to remove inter-cell interference of an access point (AP) in a wireless access system according to the present invention, including: receiving feedback information at each time slot from a plurality of APs, the feedback information including channel measurement information between terminals in each AP and the coverage of each AP, or position information of each AP; obtaining a preference for each pattern, the pattern representing an ON or OFF operation of each AP at each time slot; determining a target time rate of each pattern on the basis of the obtained preference for each pattern; receiving an instantaneous transfer rate of terminals in the coverage of each AP for each pattern from the plurality of APs; and determining a pattern in order to minimize reference between each AP according to the received instantaneous transfer rate.

Abstract: Specifically, according to one embodiment of the present invention, a method for searching for an access point is provided. The method for searching may comprises the steps of: a terminal measuring the position thereof; checking an access point located near the measured position of the terminal; determining whether or not the distance between the terminal and the access point is greater than the radius range searchable by the terminal; and searching for the access point when the distance between the terminal and the access point is less than the radius range.

Abstract: Specifically, according to one embodiment of the present invention, a method for operating a base station that assigns frequency resources to terminals in a wireless communication system is provided. The method comprises the steps of calculating a first metric using information relating to the transmission rate of each terminal; calculating a second metric using information relating to a proportion of a group to which each of the terminals belongs; determining a terminal to which a frequency resource is assigned on the basis of the calculated first and second metrics; assigning the resource to the determined terminal; and updating the information relating to the transmission rate for each terminal and the information relating to proportion of a group.

Abstract: An apparatus and method for supporting Peer to Peer (P2P) communication in a broadband wireless communication system are provided. A P2P zone within a frame used for the P2P communication includes at least one channel, each channel includes a broadcasting zone and a contention zone, and a P2P-mode transmit Mobile Station (MS) transmits a reference signal through a broadcasting zone of a channel to which itself belongs. The method MS includes determining an interference sum for each channel within the P2P zone, comparing the determined interference sums with each other, selecting a channel having the least interference sum, and transmitting information regarding the selected channel to a Base Station (BS).

Abstract: A screwdriver sleeve finder comprises a sleeve, a fastener stop, purge channels, and ports. The sleeve is mountable on a screwdriver around a bit for driving a threaded fastener. The fastener stop is disposed within the sleeve between a forward bore and a rearward bore, and defines, between the rearward bore and the forward bore, an axial path for the bit to engage the threaded fastener and an evacuation path. The purge channels are defined within sidewalls of the sleeve, and the ports are disposed in the sidewalls of the sleeve to fluidly couple respective ones of the purge channels to the forward bore. The sleeve may be coupled to a compressed gas source for supplying compressed gas into the forward bore via the purge channels and ports, and to a vacuum source for evacuating particles within the forward bore via the evacuation path and the rearward bore.

Abstract: Each base station performs virtual scheduling that does not take cell association into account for each slot and actual scheduling that takes cell association into account to calculate difference in average transmission rates for each user terminal and stores them in a table. The difference in the average transmission rates for each user terminal is compared with a difference in average transmission rates for each user terminal received from a neighboring base station to determine a handoff decision for each user terminal.

Abstract: A method of performing scheduling and a method of controlling call admission in a communication system are disclosed. A method of controlling call admission a new user equipment which enters a network in a communication system includes performing scheduling by giving priority lower than that of a user equipment which is previously receiving a service to the new user equipment, and determining whether to admit call of the new user equipment depending a result of scheduling for a certain time period.