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| Number | Title | Issue Date |
| 7489647 | Method for performing cell broadcasting and communication system using the same A method for performing cell broadcasting and a communication system using the same are provided. The method includes steps of receiving in a mobile station at least one data unit of a short message service cell broadcasting (SMSCB) message broadcast from at least o... | 02/10/2009 |
| 7415160 | Terminal and method for transporting still picture Terminal and method for transporting a still picture uses a moving picture terminal after extraction of a frame unit of still pictures, for example, from a moving picture. The extracted still picture frames can be encoded in a fixed quantizing value and stored befor... | 08/19/2008 |
| 7308104 | Forward multiple scrambling code generating method and apparatus Disclosed are a forward multiple scrambling code generating method and apparatus in a communication system. Each base station uses primary scrambling codes and an associated one of secondary scrambling code sets, each consisting of a plurality of secondary scramblin... | 12/11/2007 |
| 7089480 | Rate matching method in mobile communication system A rate matching method is provided for a mobile communication system that performs an adjustment to a code rate based on an optimal level by puncturing or repetition to respective bit streams of transport channels. The rate matching method is preferably applicable t... | 08/08/2006 |
| 7076726 | Method for matching rate in mobile communication system A method for matching a rate in a mobile communication system causes puncturing or repetition in a fixed pattern, in which puncturing or repetition is applied to each bitstream on transport channels supporting different services in a next generation mobile communica... | 07/11/2006 |
| 7012962 | System and method for coding and decoding picture signals based on a partition table including length information Method for encoding and decoding a picture signal for detecting and correcting errors in a new structured GOB according to a data partition technique, method for encoding a picture signal, including the steps of (1) grouping picture information of one block group in... | 03/14/2006 |
| 7012906 | Pilot signals for synchronization and/or channel estimation The frame words of the preferred embodiment are especially suitable for frame synchronization and/or channel estimation. By adding the autocorrelation and cross-correlation functions of frame words, double maximum values equal in magnitude and opposite polarity at z... | 03/14/2006 |
| 6999784 | Method for controlling power of base station A method for controlling power of a mobile station by a base station in a multilayered communication system is disclosed. In the present invention, a base station serving a picocell does not lower a transmission signal power of a mobile station within a soft handoff... | 02/14/2006 |
| 6987746 | Pilot signals for synchronization and/or channel estimation The frame words of the preferred embodiment are especially suitable for frame synchronization and/or channel estimation. By adding the autocorrelation and cross-correlation functions of frame words, double maximum values equal in magnitude and opposite polarity at z... | 01/17/2006 |
| 6980739 | Method for gain control of fiberoptic repeating system A method of gain control in a fiberoptic repeating system is disclosed. By the present invention, the signal levels of an optical cable can be frequently monitored without affecting the control operations of the base station. Thus, damped signal levels can effective... | 12/27/2005 |
| 6981266 | Network management system and method A network management system and method is disclosed that can add or modify, for example, a managed object, without recompiling or stopping operations of an executing network management system. Thus, preferred embodiments of the present invention allow a dynamic mana... | 12/27/2005 |
| 6977920 | CDMA mobile data communication system and a method of wireless data communication using the system A CDMA mobile data communication system and method of wireless data communication is provided for mobile-to-mobile data communication. The system may include a plurality of mobile stations, a plurality of base stations and base station controllers, a plurality of sw... | 12/20/2005 |
| 6975854 | Backup method for user data in mobile terminal A backup method for user data in a mobile terminal is disclosed, in which user data stored in a previous mobile terminal can be used in a new mobile terminal when exchanging a mobile terminal with a new one. The backup method for user data in a mobile terminal inclu... | 12/13/2005 |
| 6973062 | Method for controlling call access of terminal in mobile communication system In a method for controlling call access of a terminal in a mobile communication system based on cellular communication system, call access of mobile terminals can efficiently be controlled depending on the state of individual resources of Walsh code classes assigned... | 12/06/2005 |
| 6970458 | Method of increasing switch capacity Disclosed a method of increasing the whole switch capacity by utilizing the presently used switch network as it is. The present invention, the method of increasing a switch capacity in a switch network system in which three or more switch stages including a pluralit... | 11/29/2005 |
| 6965598 | Signal traffic routing method for a signaling network A signal traffic routing method for a signaling network, for example, a No. 7 signaling network, includes analyzing a signal message when a message transfer unit receives a signal message and determining a route of a final destination of the received signal message,... | 11/15/2005 |
| 6965579 | Communication system and method for operating multicast service in communication system In multicast service channels capable of efficiently transmitting multicast data and a method for efficiently managing multicast services using new multicast channels, a communication system includes: a higher layer; a first layer as a physical layer; and a second l... | 11/15/2005 |
| 6947387 | Video data resending method A video data resending apparatus and method is disclosed. The present invention is capable of performing a selective resending process with respect to a local bit error of a previously sent video data packet, using a CONTRAXPAND™ buffer. The present invention has ... | 09/20/2005 |
| 6920123 | Cell search method in wireless communication network Cell search method in an asynchronous mobile communication network suitable for reducing a hardware complexity and a power consumption of a mobile terminal by improving a cell search method suggested to ETSI(European Telecommunications Standards Institute) presently... | 07/19/2005 |
| 6920157 | Apparatus for multiplexing line and data transmission method using the same An apparatus for multiplexing a line and a data transmission method therefor are provided to improve data transmission efficiency. The apparatus for multiplexing a line according to the present invention includes: a plurality of conversion processors for modulating ... | 07/19/2005 |
| 6885691 | Scrambling codes and channelization codes for multiple chip rate signals in CDMA cellular mobile radio communication system A system and method for allocating channelization code and scrambling code in multiple code rates is disclosed. In the present invention, many user signals that have various chip rates in overlaid frequency band can be transmitted with minimum interference between u... | 04/26/2005 |
| 6879628 | Apparatus and method for measuring the bit error ratio of a transmission system An apparatus and method for measuring the bit error ratio of a transmission system is provided, which can accurately report the degradation of the service quality of a line to an operator by accurate BER calculation under an exceptional situation where an excessive ... | 04/12/2005 |
| 6876630 | Reframer and loss of frame (LOF) check apparatus for digital hierarchy signal A reframer and Loss Of Frame (LOF) checking apparatus excludes an input frame data having an improper start point, carries out a reframing process, checks whether the reframed data is normal, and outputs a LOF state to a checking board or operator, in accordance wit... | 04/05/2005 |
| 6876634 | Architecture of mobile communication systems network and method for transmitting packet data using the same Architecture of a mobile communication system network and method for transmitting a packet data using the same, which can minimize required signal links and interlocking lines, the architecture including a plurality of radio network controllers each connected to a p... | 04/05/2005 |
| 6862266 | Loop test apparatus of packet routing bus in communication system and loop test method A loop test apparatus of a packet routing bus in a communication system and a loop test method thereof capable of testing entire functions of the packet routing bus of a full-duplex transmission mode and transmitting and receiving nodes by adding a loop test functio... | 03/01/2005 |
| 6862464 | Power supply device for radio telephone system The present invention relates to a power supply device for a radio telephone system which can normally perform radio communication during power failure, by providing power of a battery disposed at a main body of the system or a wireless handset to the inside circuit... | 03/01/2005 |
| 6853691 | Vector modulator using amplitude invariant phase shifter A vector modulator is disclosed which includes a first amplitude invariant phase shifter for shifting a phase of a received signal at fixed intervals within a preset first shifting range and a quadrature hybrid coupler for separating an output of the first amplitude... | 02/08/2005 |
| 6847608 | Path management and test method for switching system The present invention relates to a switching system, and in particular to a path management method for a switching system which is capable of periodically checking a path state of each hardware board in a switching system of a dual active structure, managing the che... | 01/25/2005 |
| 6844939 | Device for transmission/reception of facsimile data in wireless local loop (WLL) system A device for transmission/reception of a facsimile data in a separate type WLL system is provided, in which an analog G3 facsimile signal is converted into a CDMA signal format for transmission/reception of the signal. The device includes an interface unit for trans... | 01/18/2005 |
| 6839553 | Method of managing mobile station operational parameters A method of managing mobile station operational parameters is disclosed in which a mutual authentication between a mobile station and a network is performed. The present method allows a mutual authentication while maintaining the updating procedure of the mobile sta... | 01/04/2005 |
| 6829723 | Duplicating processors and method for controlling anomalous dual state thereof A method for controlling anomalous dual state of duplicated processors for a fault-tolerant system having a first and a second processors that are connected to each other through network, comprising: a first step of transmitting its own state information of either t... | 12/07/2004 |
| 6826408 | Method for transmitting and receiving message of short message broadcasting services in telecommunication system A method for transmitting and receiving short message broadcast services in a communication system is disclosed. The present invention reduces a battery consumption of a mobile station by additionally using an inserted message field of a broadcast indicator for noti... | 11/30/2004 |
| 6822949 | Register control apparatus for W-CDMA WLL separation type terminal A register control apparatus is provided between a master unit and a slave unit for a W-CDMA WLL separation type terminal which includes a mirror register of a master unit, a register of a slave unit, a framing logic unit for periodically transmitting data to and ex... | 11/23/2004 |
| 6804264 | Pilot signals for synchronization and/or channel estimation Disclosed is a method of generating pilot sequences having double lengths of slots used for frame synchronization in an up or down link of a next generation mobile communication system which adopts W-CDMA mode. Disclosed is a method of generating pilot sequences hav... | 10/12/2004 |
| 6801508 | Asynchronous transfer mode packet network and method for transferring packet data in the same A cellular asynchronous transfer mode packet network and a method for transferring packet data in the same is disclosed. A virtual circuit is established between a serving radio network controller and a target radio network controller, or between the serving radio n... | 10/05/2004 |
| 6795432 | Method for searching composite path for virtual container signals in CLOS switching network Methods for searching a composite path for virtual container signals in a similar CLOS switching network is provided that is capable of switching various signal tributaries. The method can include managing a link use state between each state with a linked list and a... | 09/21/2004 |
| 6795449 | Method of staining target interphase chromosomal DNA Disclosed is a channel allocation method on performing a data communication in a wide band wireless multi-media communication system, which allocates selectively reserved time slots or contention time slots, according to the quantity of data to be sent. In the metho... | 09/21/2004 |
| 6788617 | Device for generating memory address and mobile station using the address for writing/reading data A device for generating memory addresses is provided that is suitable for generating memory addresses transposed in row/column directions with reference to a data successively stored therein along with a mobile station by using the same, and a method for writing/rea... | 09/07/2004 |
| 6788679 | Apparatus and method for configuring multicasting network in asynchronous transfer mode switching system The present invention relates to a multicasting network apparatus and method for an ATM switching system having a banyan network and a route network which includes a header encoder part for generating a header, a boolean splitter network for copying a cell routed fr... | 09/07/2004 |
| 6788652 | Radio protocol for mobile communication system and method Radio protocol for a next generation mobile communication system is disclosed including a radio link control layer for connecting to an upper layer through a service access point provided in advance and for connecting to a lower layer through a plurality of logic ch... | 09/07/2004 |
