Patent application number | Description | Published |
20130163572 | COMMUNICATION METHOD USING A PREAMBLE TO SHARE CHARACTERISTIC INFORMATION, METHOD FOR GENERATING THE PREAMBLE, AND COMMUNICATION SYSTEM TO WHICH THE METHODS ARE APPLIED - A communication method of a transmitter using a preamble in a wireless communication system, includes determining at least two subcarriers from among a plurality of subcarriers, for the preamble; mapping a subcarrier sequence and a subcarrier phase value of the preamble to the at least two subcarriers; and transmitting the preamble using the at least two subcarriers. The preamble may include a real component having a first repeated pattern in a preset time interval, and an imaginary component having a second repeated pattern in the preset time interval, and a relationship between the first repeated pattern and the second repeated pattern may indicate characteristic information of the wireless communication system. | 06-27-2013 |
20130163575 | CONTENTION BASED CHANNEL OCCUPYING METHOD IN WIRELESS NETWORK USING A PLURALITY OF CHANNELS - Disclosed is a contention based channel occupying method in a wireless network using a plurality of channels, including: acquiring, by terminals that are incapable of transmitting a data frame through primary contention, occupation channel information from a terminal that transmits the data frame through the primary contention; verifying, by the terminals, an occupiable channel based on the occupation channel information; and performing, by the terminals, secondary contention in the occupiable channel. | 06-27-2013 |
20130176960 | APPARATUS AND METHOD FOR COGNITIVE RADIO MESH NETWORK BASED ON GEOLOCATION DATABASE - A cognitive radio mesh node may include at least one directional antenna, at least one transceiver to transmit and receive data using the at least one directional antenna, and a processor to determine a channel for performing communication for a cognitive radio mesh network based on a geolocation database and to control the at least one transceiver based on the determined channel. | 07-11-2013 |
20140169350 | APPARATUS AND METHOD FOR DETERMINING IDENTITY OF WIRELESS LAN SYSTEM - Disclosed are an apparatus and a method for determining an identity of a WLAN system occupying a channel, using information within a signal field or time synchronization between target channels. For this, the present invention includes a preamble detecting unit configured to detect a preamble in each channel; a channel information obtaining unit configured to obtain reference time information when the preamble is detected in each channel, or to obtain signal field information in each channel using the detected preamble; and an identity determining unit configured to determine an identity of a WLAN system occupying each channel by comparing the reference time information obtained in each channel, or by comparing the signal field information obtained in each channel. | 06-19-2014 |
20140177546 | APPARATUS AND METHOD FOR AVOIDING INTERFERENCE BETWEEN ACCESS POINTS - The present invention relates to an apparatus and a method for avoiding signal interference between access points (APs) in a non-license band, and more particularly, an interference avoidance apparatus and method between access points (APs) that avoid interference based on whether an overlapping basic service set (OBSS) is present, whether an overlapping operation channel between adjacent APs is used, whether it is possible to select a non-overlapping operation channel between adjacent APs, and the like. | 06-26-2014 |
20140341178 | COMMUNICATION METHOD AND RESOURCE ASSIGNING METHOD BETWEEN A PLURALITY OF TERMINALS IN INFRASTRUCTURE NETWORK - A communication method between a plurality of terminals and a resource allocation method in an infrastructure network are disclosed. A terminal according to an embodiment communicates with at least one other terminal using a particular frequency band in a third time section distinguished from a first time section for reception of a downlink data and a second time section for transmission of an uplink data, thereby providing a technology of generating a small-scale network partly with respect to a particular region in a network with an extensive coverage of an infrastructure network. | 11-20-2014 |
20150072700 | METHOD AND DEVICE FOR MANAGING BACKUP CHANNELS FOR COGNITIVE RADIO COMMUNICATION - Provided is an apparatus and method for managing a backup channel for cognitive radio communication that may group at least one device included in a cell served by a base station, and allocate backup channels for cognitive radio communication to the groups, based on location information and mobility of the groups. | 03-12-2015 |
20150110045 | COMMUNICATION DEVICE AND METHOD OF ALLOCATING PARTIAL BAND TO AVOID INTERFERENCE IN PARTIAL BAND - Provided is a communication device and a method of allocating a partial band to avoid interference in the partial band, wherein the method includes extracting at least one partial band in which interference occurs from a plurality of partial bands constituting an operating channel of a user terminal, determining an available partial band aside from the extracted partial band, and allocating the determined partial band to the user terminal. | 04-23-2015 |