KTFREETEL CO., LTD. Patent applications |
Patent application number | Title | Published |
20110305218 | METHOD FOR REQUESTING AND REPORTING CHANNEL QUALITY INFORMATION IN WIRELESS PORTABLE INTERNET SYSTEM - A method for requesting and reporting channel quality information (CQI) in a wireless portable Internet system is disclosed. Timing of a channel quality information request by a base station is determined, existence of an automatic repeat request acknowledgment (ARQ_ACK) message of downlink data is determined on requesting the channel quality information from the subscriber station, the automatic repeat request acknowledgment message and the radio resource for the channel quality report to the subscriber station is allocated, the automatic repeat request acknowledgment message and the channel quality report information is received, and a modulating and coding level of downlink data is determined by extracting the channel quality report information form the automatic repeat request acknowledgment message. | 12-15-2011 |
20110191493 | INTERWORKING SYSTEM BETWEEN IP NETWORKS USING DIFFERENT IP ADDRESS FORMAT, APPLICATION LAYER GATEWAY (ALG) SERVER, STUN SERVER, NETWORK ADDRESS TRANSLATOR, INTERWORKING METHOD THEREOF, AND SIP MESSAGE ROUTING METHOD THEREOF - Disclosed are an interworking system between IP networks using different IP address format, an application layer gateway (ALG) server, a network address translator, an interworking method, and a SIP message routing method. The interworking system between a local network using a private IP and a public network using a public IP includes a STUN server and an application layer gateway (ALG) server. The STUN server provides binding information of header information of a public IP binding request. The application layer gateway (ALG) server performs a public IP binding request with header information changed by IP masquerading, and performs routing by applying the received binding information to media receiving address information of a SIP message. | 08-04-2011 |
20100238923 | TUNNELING METHOD OF MOBILE TERMINAL FOR SUPPORTING IP MOBILITY - A tunneling method for a mobile terminal is provided. In the tunneling method, a first device driver connected to a visit network senses a packet tunneled to an interface connected to the visit network, and the first device driver decapsulates a packet without transmitting the packet to a first IP end that is an upper layer of the first device driver and transmits the decapsulated packet to a second driver. Then, the second driver transmits a packet to a second IP end that is an upper layer of the second driver. | 09-23-2010 |
20100056138 | METHOD FOR TRANSMITTING MULTIMEDIA MESSAGE TO ROAMED MULTIMEDIA MESSAGE RECEIVER AND SYSTEM THEREOF - The present invention relates to a system for transmitting a multimedia message to a roamed multimedia message receiver, and a method thereof. In the method, when the multimedia message is transmitted from a first mobile communication network to a multimedia message receiver that has roamed from the first mobile communication network to a second mobile communication network, location information of the multimedia message receiver is determined according to a request for transmission of the multimedia message. A roaming state of the multimedia message is determined based on the location information of the multimedia message receiver When it is determined that the multimedia message receiver has roamed, a notification message of a pull method is transmitted to the multimedia message receiver to determine whether the multimedia message receiver accepts receipt of the multimedia message. In addition, when a response of acceptance is received from the multimedia message receiver, the multimedia message is transmitted to the multimedia message receiver | 03-04-2010 |
20100046662 | DIGITAL CLIPPING METHOD FOR A TRANSMITTER OF AN ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS SYSTEM - The present invention relates to a digital clipping method for reducing a high peak-to-average power ratio (PAPR) of a transmission signal in a transmitter of an orthogonal frequency division multiplexing access (OFDMA) system. In the method, a) the transmission signal to be digitally clipped is divided into real and imaginary parts, b) magnitudes of the real and imaginary part signals are divided into a plurality clipping levels, and c) the transmission signal is respectively clipped by comparing the real and imaginary part signals with the plurality of clipping levels while allowing phase errors. In c), a plurality of comparators is used to respectively compare the real and imaginary parts of the complex number transmission signal with the plurality of clipping levels. | 02-25-2010 |
20100029303 | Method and apparatus for displaying messages in an idle state of mobile terminal, driving an application for an idle state in a mobile terminal and providing idle state contents for a mobile terminal - The present invention relates to a method and apparatus of an idle state of a mobile terminal. One embodiment relates to a method and apparatus that display message in an idle state of a mobile terminal. Another embodiment relates to a method and apparatus for driving an application for an idle state in a mobile terminal. A further embodiment relates to a method and apparatus for providing idle state contents to a mobile terminal. | 02-04-2010 |
20090248475 | OPEN MOBILE BUSINESS SUPPORTING SYSTEM AND METHOD - An open mobile business supporting method and system are disclosed for effectively supporting various business models desired by a contents/service provider by providing single interface that can integrally use various resources of a mobile communication system. Low-level functions, which can be grouped as a unit function and performed in a mobile communication system, are selected among service logics of a CP/SP and defined as biz logic. The biz logic is performed according to a request of CP/SP by cooperating with a mobile communication system and various legacy systems. The result of performing the biz logic is returned to the CP/SP. | 10-01-2009 |
20090219803 | ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING WIRELESS COMMUNICATION OPERABLE ON FREQUENCY SELECTIVE CHANNEL, AND CHANNEL COMPENSATION METHOD - Disclosed is an OFDM (orthogonal frequency division multiplexing) wireless communication system operable on a frequency selective channel, and a channel compensation method. An IDFT (inverse discrete Fourier transform) unit of a transmitter includes first through third N-point IDFT units, and performs IDFT on a binary information signal twice. A DFT (discrete Fourier transform) unit of a receiver includes first through third N-point DFT units, a channel predictor and interpolator, and a channel compensator, and performs DFT on the signal received from the transmitter twice. | 09-03-2009 |
20090112453 | METHOD OF PROVIDING DIRECTION INFORMATION ACCORDING TO REAL-TIME TRAFFIC CONDITIONS - A method, device and recorded medium having recorded the method, for providing directions information applied with real-time traffic condition reports are disclosed. An aspect of the present invention features a method and device that can receive traffic condition reports in real-time and provide directions information applied with the pertinent traffic condition reports. Accordingly, with the present invention, the directions information can be generated by using first real-time traffic condition reports. Then, the path directions applied with the change of traffic condition reports according to the time flow can be acquired and provided to a user. | 04-30-2009 |
20090075633 | METHOD FOR CONTROLLING USER INTERFACE MENU, AND MOBILE TERMINAL AND DEVICE FOR PROVIDING APPLICATION SERVICE USING THE SAME - A method of controlling a user interface menu and a mobile communication terminal and a device for providing application service are disclosed. According to one embodiment of the present invention, the method of controlling the user interface menu can include receiving user interface menu forming information from the application service providing device if a call is connected between the mobile communication terminal and the application service providing device through the mobile communication system; extracting menu component data corresponding to a set user interface menu if the menu forming information; and combining the extracted menu component data and forming the user interface menu to be provided per the service attribute. | 03-19-2009 |
20090073031 | METHOD AND SYSTEM FOR MEASURING LOCATION USING ROUND TRIP TIME INFORMATION IN MOBILE COMMUNICATION NETWORK - A method and position estimating system for estimating a position of a mobile terminal is disclosed. In one embodiment, the position estimating system includes i) a base station configured to compute round trip time information of a mobile terminal, ii) a base station controller configured to receive the round trip time information of the mobile terminal, iii) a repeater configured to expand a service coverage of the mobile terminal, iv) a round trip time measuring unit, being connected to the repeater and configured to measure round trip time information of the repeater and v) a position estimating device configured to estimate the position of the mobile terminal by using the round trip time information of the mobile terminal and the round trip time information measured by the round trip time measuring unit. According to one embodiment, a position of the mobile terminal can be exactly computed by using round trip time and information, stored in a network management system. | 03-19-2009 |
20090047961 | METHOD AND APPARATUS FOR OPTIMIZING NEIGHBOR LIST FOR HANDOVER MANAGEMENT - A method and an apparatus for optimizing a neighbor list in a mobile communication system is disclosed. In one embodiment, the apparatus includes: i) a data collecting unit, collecting wireless quality measurement data and call fault data of a mobile communication terminal, wherein the call fault data is information on a call fault event generated because no sub-cell information is present in the neighbor list when the mobile communication terminal carries out a handover, ii) a data analyzing unit, analyzing the wireless quality measurement data and the call fault data and calculating a frequency of a sub-cell being included in an active set for each handover-possible target sub-cell and a frequency of call fault event occurrence, wherein the frequency of being included in the active set is a frequency of the sub-cell and target sub-cell being included simultaneously in the active set for handover and iii) a neighbor list optimizing unit using the frequency of being included in the active set and the frequency of call fault event occurrence to set an order of priority of handover-possible target sub-cells for the sub-cell and generating a neighbor list. | 02-19-2009 |
20090047940 | METHOD AND APPARATUS FOR PROVIDING IDLE SCREEN SERVICE - A method and apparatus for providing an idle screen service are disclosed. A mobile communication terminal receiving contents provided from at least one content provider server in a mobile communication system environment is also disclosed. The mobile communication terminal may include a content receiver module which receives contents provided through a mobile communication system by separating into layers, a handset operating system module which operates the terminal and runs an application and which has a user interface, and a content management application module which synthesizes the contents separated into layers received from the content receiver module into one idle screen layer and which provides it to the idle screen of the mobile communication terminal. According to at least one embodiment of the invention, several contents provided in a mobile communication system environment can be provided at once on a mobile communication terminal idle screen in an idle mode, to satisfy the demands of the user for DIY services and increase the content participation rate. | 02-19-2009 |
20090029738 | DIGITAL DEVICE AND METHOD FOR PROVIDING ADDITIONAL SERVICE BY USING THE SAME - A digital processing device capable of receiving an additional service is disclosed. In one aspect, a digital processing device includes i) an input unit, inputting a signal, ii) a subscriber identity unit, storing an identity code of a communication operator and generating a communication network access request message, iii) an additional service identity unit, storing an identity code of an additional service operator and generating an additional service request message and v) a control unit, generating a control signal allowing one of the subscriber identity unit and the additional service identity unit to be selectively driven. In accordance with at least one inventive embodiment, a user of the digital processing device can receive an additional service without his or her subscription to a specific communication operator and use various additional services in addition to the additional services provided by the subscribed communication operator. | 01-29-2009 |
20080304440 | Terminal and Method for Accessing Wireless Connection - A method for establishing a wireless connection performed by a subscriber station (SS) to receive Internet services from a given terminal node through a base station (BS), the method including: a) when an initial connection with the BS is established, establishing a first MAC connection with the BS, and setting the first MAC connection as a dedicated TCP connection; b) when a given packet is generated, the SS determining whether the given packet is a control packet for a TCP connection with the SS; c) transmitting the given packet through the dedicated TCP connection when a control packet is transmitted, and establishing a TCP connection with the SS; d) after establishing the TCP connection, establishing a second MAC connection for data communication between the SS and the BS; and e) after establishing the TCP connection and the second MAC connection, receiving data from the SS through the second MAC connection. | 12-11-2008 |
20080299986 | DEVICE AND METHOD FOR CONTROLLING OVERLOAD - An overload control device and a method thereof in a radio network controller are disclosed. One embodiment of the present invention includes i) a load measuring unit, measuring a load of a radio network controller every predetermined time, ii) an overload determining unit, determining whether an overload is generated by comparing the measured load with a predetermined critical value, iii) a parameter setting unit, setting a parameter of a call admission ratio according to an overload level if the overload is generated as the result of determining, the call admission ratio indicating a ratio of a maximum transmitting output as compared with an admitted transmitting output of a base station and iv) a call connection setting control unit, transmitting to the radio network controller a call connection setting signal to limit new call connection setting of a base station having a total transmitting output value which is larger than an admitted transmitting output value set by the parameter of the call admission ratio of the base station among all base stations pertained to the radio network controller. | 12-04-2008 |
20080247363 | METHOD FOR PROVIDING MOBILE SERVICE USING CODE-PATTERN - A method and apparatus for providing a mobile service with the use of a code pattern is disclosed In one embodiment, the method comprising: taking a photograph of a code pattern image, decoding the photographed code pattern image so as to obtain code information, extracting uniform resource locator (URL) information corresponding to the code information, transmitting a content information request message to a service provider server corresponding to the URL information, and receiving content information corresponding to the URL information from the service provider server. According to embodiments of the present invention, it is possible to provide various and convenient mobile services to mobile terminal users using a mobile terminal, having a camera, and a code pattern containing the URL information. | 10-09-2008 |
20080245870 | METHOD FOR PROVIDING MOBILE SERVICE USING CODE-PATTERN - A method and apparatus for providing a mobile service with the use of a code pattern is disclosed In one embodiment, the method comprising: taking a photograph of a code pattern image, decoding the photographed code pattern image so as to obtain code information, extracting uniform resourse locator (URL) information corresponding to the code information, transmitting a content information request message to a service provider server corresponding to the URL information, and receiving content information corresponding to the URL information from the service provider server. According to embodiments of the present invention, it is possible to provide various and convenient mobile services to mobile terminal users using a mobile terminal, having a camera, and a code pattern containing the URL information. | 10-09-2008 |