| Patent application number | Description | Published |
|---|
| 20080285535 | Multi-Fa Processing System and Its Digital Band-Pass Filtering Method - A multi-channel processing system for selectively generating and transmitting/receiving a desired channel (FA: Frequency Assignment) signal and a band-pass filtering method thereof are provided. The multi-channel processing system includes a controller for receiving a channel selection signal including ON/OFF information of the respective channels and generating a filter coefficient corresponding to the channel selection signal; an input signal generator for generating an input signal; and a band-pass filter for changing a predetermined filter coefficient according to the filter coefficient generated by the controller and filtering the input signal from the input signal generator. Accordingly, since the controller can change the filter coefficient of the band-pass filter and selectively generate a channel, an efficient and simple multi-channel processing system using one band-pass filter regardless of the number of generated channels may be provided. | 11-20-2008 |
| 20080307026 | Memory Address Generating Method and Twiddle Factor Generator Using the Same - The present invention relates to a memory address generating method and a twiddle factor generator using the memory address generating method in a fast Fourier transform (FFT) system. In the memory address generating method for generating a memory address of a twiddle factor in a fast Fourier transform (FFT) system according to an embodiment of the present invention: a) a temporary address value of a second twiddle factor is induced and generated based on a first twiddle factor; b) a control signal for controlling the system is generated based on the generated temporary address value; and c) a memory address value of the second twiddle factor is generated from the temporary address value. | 12-11-2008 |
| 20090147747 | APPARATUS FOR SCHEDULING TRANSMISSION OF DATA UNIT IN BASE STATION - The present invention relates to a scheduling apparatus of a base station supporting Automatic Repeat reQuest (ARQ) method. In particular, the present invention discloses scheduling a data unit transmitted to a mobile station from a base station providing ARQ method for correcting an error in wireless data communication and generating a high rate frame. | 06-11-2009 |
| 20090154619 | FREQUENCY ERROR ESTIMATOR USING SECOND-ORDER LOOP FILTER AND OPERATING METHOD OF THE FREQUENCY ERROR ESTIMATOR - A frequency error estimator and an operating method of the frequency error estimator are provided. In the frequency error estimator and the operating method of the frequency error estimator, a frequency error between a transmitter and a receiver of a mobile communication system using a reference code is calculated, thereby improving the precision of estimation while reflecting variations in frequency over time. | 06-18-2009 |
| 20090158291 | METHOD FOR ASSIGNING RESOURCE OF UNITED SYSTEM - A method of assigning a resource of a united system in which a plurality of single systems are complexly operated includes: determining a multi-user diversity order based on the quantity of users existing within the system; determining a cost function using the determined multi-user diversity order; and assigning a resource based on the determined cost function. Therefore, a state of each system and user requirements can be fully reflected and a resource can be efficiently managed within a united system in which several systems are complexly operated. | 06-18-2009 |
| 20090168705 | Method for Controlling Signal Power Level to Control Contention Beween Mobile Terminals, and Signal Power Level Controller in Orthogonal Frequency Division Multiplexing System - The present invention relates to a device for controlling a power level to control contention between mobile terminals in an uplink contention period in an orthogonal frequency division multiplexing access (OFDMA) system, and a method thereof. In the method, cell broadcasting information broadcasted from the base station is received by the mobile terminal, the transmission power information of the base station is obtained from the cell broadcasting information by the mobile terminal, a received power level of the received cell broadcasting information is obtained by the mobile terminal, transmission power of a signal transmitted to the base station is determined based on the transmission power information and the received power level, and the signal is transmitted to a contention period based on the determined transmission power. | 07-02-2009 |
| 20100023622 | METHOD FOR ASSIGNING RESOURCE OF UNITED SYSTEM - A method of assigning a resource of a united system in which a plurality of single systems are complexly operated includes: determining a cost function using standard network state information commonly used within the united system; and assigning a resource based on the cost function. Therefore, a state of each system and user requirements can be fully reflected and a resource can be efficiently managed within a united system in which several systems are complexly operated. | 01-28-2010 |
| 20100035552 | METHOD FOR PROVIDING SERVICE, AND METHOD AND APPARATUS FOR ALLOCATING RESOURCE IN WIRELESS COMMUNICATION SYSTEM - Provided is a method for providing a service, and a method and an apparatus for allocating a resource in a wireless communication system. Services to be provided to users are divided into one of primary and secondary services based on priority in terms of frequency utilization. A service is provided using frequency channel remaining after being used in the primary service in a time zone when frequency utilization rate of the primary service is a threshold value or less. Accordingly, when service data corresponding to the secondary service are received, a user terminal stores the service data in a storage unit. Then, when the user requests provision of the corresponding service, the user terminal provides the stored service data to the user. | 02-11-2010 |
| 20100151877 | SMART RADIO COMMUNICATION SYSTEM AND METHOD OF OPERATING THE SAME - Provided is a method of operating a smart radio communication system, the method including: collecting information associated with each of a plurality of radio access technologies (RATs) through an access to the plurality of RATs; receiving a type of a service, requested by a terminal, via a first RAT accessing the terminal among the plurality of RATs; selecting an optimal channel based on the collected information and the received type of the service; and transmitting a content corresponding to the service via the selected optimal channel. | 06-17-2010 |
| 20100266056 | METHOD AND APPARATUS FOR SCHEDULING MULTIPLE USERS IN A MULTIPLE-INPUT MULTIPLE-OUTPUT SYSTEM - A multi-user scheduling method and apparatus in a Multiple-Input Multiple-Output (MIMO) system are disclosed. The multi-user scheduling method includes calculating a valid channel norm based on statistical characteristics of a channel for every user terminal, selecting a user set that maximizes the sum of valid channel norms and that includes as many user terminals as data are transmittable to simultaneously, and precoding transmission signals for the user terminals included in the user set according to a predetermined scheme. According to the present invention, the volume of computation required for multi-user selection is reduced greatly, thus making real-time implementation possible. | 10-21-2010 |
| 20100273467 | METHOD FOR PROVIDING OF CALL TRANSFERRING SERVICE AND MOBILE TERMINAL USING THE SAME - A method of providing a call transfer service and a mobile terminal using the same are provided. When a call connection request signal transmitted to a mobile communication server through a PSTN is received, any one of previously stored phone numbers is selected and a service of transferring a call to the selected phone number according to the received call connection request signal is requested. Therefore, when call connection is requested, it is selected whether a call is to be transferred, when a call is transferred, a phone number to transfer a call can be dynamically selected according to a user situation, and thus user convenience according to call transfer can be improved. | 10-28-2010 |
| 20100293211 | APPARATUS AND METHOD FOR GENERATING MEAN VALUE - There is provided an apparatus for generating a mean value of N-bit input data in M-bit operations (M and N are integers, and M is greater than N) by dividing a total sum of the input data by number of times the data are input, including a ROM (Read Only Memory) storing therein, as denominators, quotients of dividing 2 | 11-18-2010 |
| 20100316147 | NON-CONTINUOUS ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM AND CONTROL METHOD OF NON-CONTINUOUS ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM - A Non-Continuous Orthogonal Frequency Division Multiplexing (NC-OFDM) system may be provided. The NC-OFDM system, including: a sensing unit to determine whether to use at least one frequency band; a band control unit to disable a subcarrier with respect to a frequency band in use as a result of the determination; a pruning determination unit to determine whether a number of points where the subcarrier is disabled is greater than a threshold value; a pruning retrieval unit to retrieve a pruning path generated by the disabling of the subcarrier, when the number of points is greater than the threshold value; and a Fourier transform unit to perform a Fast Fourier transform (FFT) or Inverse FFT (IFFT) by applying the pruning path to the subcarrier. | 12-16-2010 |
| 20110016168 | METHOD AND APPARATUS FOR MODULO N CALCULATION - A modulo N calculating method for an M1*M2-bit binary integer, wherein N, M1 and M2 are integers, includes the steps of dividing the M1*M2-bit binary integer into M1 bits and performing AND operation on each M1 bits and a specific binary integer; and changing a value of an output register depending on the AND operation result and storing the value thereto. A modulo N calculating apparatus includes an input unit for receiving an M1*M2-bit binary integer, wherein N, M1 and M2 are integers; and an AND operation unit for performing AND operation on the M1*M2-bit binary integer and a specific binary integer. Furthermore, when the M1 and the N may be 4 and 3, respectively, the specific binary value may be 1010 or 0101. | 01-20-2011 |
| 20110092174 | APPARATUS AND METHOD FOR TRANSMITTING/RECEIVING SIGNAL - A signal transmitting apparatus includes a signal distributor, a frequency converter, and a frequency synthesizer. The signal distributor is configured to baseband signals corresponding respectively to a plurality of frequency band. The frequency converter is configured to convert each of the distributed baseband signals into one of a positive frequency signal and a negative frequency signal according to the frequency band. The frequency synthesizer is configured to synthesize the positive frequency signal and the negative frequency signal to generate a transmission signal. Herein, the positive frequency signal and the negative frequency signal are signals included in one predetermined intermediate frequency band. | 04-21-2011 |
| 20110151857 | SYSTEM AND METHOD FOR RADIO ACCESS IN RECONFIGURABLE WIRELESS COMMUNICATION SYSTEM - A system for radio access in a wireless communication system, in which a number of RATs exist, includes: a RAS configured to share radio environment information and the RATs with an adjacent RAS using a macroband SPC, the RAS being reconfigurable in conformity with the RATs; and a RMS configured to transmit/receive the radio environment information and the RATs to/from the RAS using a microband SPC and access the RAS using the microband SPC, the RMS being reconfigurable in conformity with RAT of the accessed RAS. | 06-23-2011 |
