Patent application number | Description | Published |
20090122901 | METHOD FOR CONFIGURATING BASIC SIGNAL ALLOCATION UNIT AND METHOD FOR TRANSMITTING SIGNALS USING THE SAME - A method for configurating a basic signal allocation unit and a method of transmitting signals using the configurated basic signal allocation unit are disclosed. In particular, a basic frequency domain signal allocation unit is configurated by considering at least one selected from the group consisting of a signaling overhead, a size of a coherent bandwidth and a number of divisors among specific numbers and an OFDM symbol number corresponding to a multiple of a subframe unit, each of the specific numbers multiplied to a predetermined subcarrier spacing to enable a result value of the multiplication to have a difference smaller than a prescribed threshold from a divisor of a system bandwidth. And, a time domain unit is configurated by 1-subframe unit. Accordingly, signaling overhead can be efficiently reduced. | 05-14-2009 |
20100002644 | METHOD OF RETRANSMITTING DATA IN A WIRELESS COMMUNICATION SYSTEM AND APPARATUS FOR IMPLEMENTING THE SAME - A method of transmitting data in a wireless communication system is disclosed. More specifically, the method includes receiving a first group index and a second group index, wherein the first group index represents indices of a group having channel power below a specified threshold value and the second index group index represents indices of a group having channel power greater than or equal to the specified threshold value, and transmitting the data after swapping mapping locations of the first group index and the second group index. | 01-07-2010 |
20100061473 | METHOD AND APPARATUS FOR SELECTING MODULATION AND CODING SCHEME (MCS) INDEX BASED ON FREQUENCY SELECTIVITY - A method of selecting a modulation and coding scheme (MCS) index in a wireless communication system is disclosed. More specifically, the method includes measuring a frequency selectivity of a receiving channel, selecting a MCS index having a coding rate below a prescribed coding rate threshold value if the measured frequency selectivity is greater than or equal to a specified frequency selectivity threshold, and selecting the MCS index having the coding rate above or equal to the prescribed coding rate threshold value if the measured frequency selectivity is less than the specified frequency selectivity threshold. | 03-11-2010 |
20100067367 | METHOD OF SELECTING MODULATION AND CODING SCHEME (MCS) INDEX IN A WIRELESS COMMUNICATION SYSTEM AND APPARATUS FOR IMPLEMENTING THE SAME - A method of selecting a modulation and coding scheme (MCS) in a wireless communication system is disclosed. More specifically, the method includes selecting a MCS index having a coding rate that is greater than a specified coding rate threshold if a resource allocation scheme of a transmitting end employs a localized resource allocation scheme, and selecting the MCS index having the coding rate that is less than the specified coding rate threshold if the resource allocation scheme of the transmitting end employs the distributed resource allocation scheme. | 03-18-2010 |
20100177717 | GROUPING BASED RESOURCE ALLOCATION METHOD, METHOD FOR TRANSMITTING SIGNAL USING THE SAME, AND GROUPING BASED RESOURCE ALLOCATION CONTROLLER - A grouping based resource allocation method, a method for transmitting a signal using the same, and a grouping based resource allocation controller are disclosed. That is, the method including grouping a plurality of user equipments (UEs) to a predetermined number of groups using feedback information received from the plurality of UEs and dynamically allocating communication resources to the UEs included in the groups according to the group based feedback information and the method for transmitting the signal using the same are disclosed. In addition, a grouping based resource allocation controller including a grouping module and control module for performing the above-described method in a base station is disclosed. | 07-15-2010 |
20100177843 | METHOD FOR TRANSMITTING SIGNALS FOR ACHIEVING DIVERSITY GAIN - A method for transmitting signals for achieving diversity gain is provided. In a communication system having multiple independent transmission paths, a signal is transmitted by mapping it to different independent transmission paths at initial transmission and at retransmission, thereby obtaining diversity gain. Especially, real and ideal components of a transmission signal are mapped to different transmission paths, thereby obtaining additional gain. | 07-15-2010 |
20100222055 | METHOD OF PERFORMING CELL RESELECTION PROCEDURE IN WIRELESS COMMUNICATION SYSTEM - A method of performing a cell reselection procedure in a wireless communication system includes evaluating priorities of a serving cell and neighbor cells, each of which use different frequency bands, performing inter-frequency measurement on a neighbor cell which has a higher priority than the serving cell, performing the inter-frequency measurement on a neighbor cell which has an equal or lower priority than the serving cell, when a signal characteristic of the serving cell is less than a threshold, and performing cell reselection according to the priorities. | 09-02-2010 |
20110126068 | SIGNAL TRANSMISSION METHOD USING MULTIPLE HARQ - A method is described for transmitting signals in a mobile communication system which splits an information block into a plurality of split-information blocks and performs a hybrid automatic repeat request (HARQ) process upon each of the split-information blocks. A method is also described for reducing control information overhead by transmitting control information only through one control channel when splitting an information block and transmitting split-information blocks through a plurality of subframes or a plurality of resource blocks. The segmentation of the information block is performed in a physical layer to reduce medium access control (MAC) overhead and to simplify implementation. | 05-26-2011 |
20110128901 | METHOD FOR SAVING POWER IN A MULTI-CARRIER WIRELESS ACCESS SYSTEM - A method for saving power in a multi-carrier wideband wireless access system is provided. A method for saving the power of a receiver in a multi-carrier wireless communication system includes acquiring multi-carrier information from a transmitter on a primary carrier, entering one or more secondary carriers satisfying a predetermined power saving mode entry condition out of one or more secondary carriers included in the multi-carrier information into a power saving mode, and receiving data during a listening interval according to the power saving mode on the one or more secondary carriers entering the power saving mode. The multi-carrier information includes at least one of information about a plurality of available carriers, information indicating the primary carrier and the one or more secondary carriers out of the plurality of available carriers, and information about the power saving mode entry condition of the one or more secondary carriers. | 06-02-2011 |
20110182229 | METHOD AND APPARATUS OF TRANSMITTING CONTROL INFORMATION FOR MULTICAST BROADCAST SERVICE - A method and an apparatus for transmitting control information for multicast broadcast service (MBS) is provided. The method includes configuring one cell specific control channel for carrying cell specific control information; configuring at least one non-cell specific control channel for carrying non-cell specific control information; and transmitting the cell specific control channel and the non-cell specific control channel to a mobile station. | 07-28-2011 |
Patent application number | Description | Published |
20100091902 | METHOD OF TRANSMITING DATA TO MITIGATE INTRERENCE - A method of transmitting data using hybrid automatic repeat request (HARQ) is provided. The method includes transmitting an initial data, receiving a retransmission request for the initial data, generating a retransmission data by shifting the phase of the initial data on signal constellation and transmitting the retransmission data. Inter-cell interference or intra-cell interference can be mitigated. | 04-15-2010 |
20100166111 | METHOD AND APPARATUS FOR PERFORMING HARQ IN WIRELESS COMMUNICATION SYSTEM - A method and an apparatus for performing hybrid automatic repeat request (HARQ) using constellation rearrangement and a circular buffer in a wireless communication system is provided. An encoded information bit is stored into a circular buffer. A transport block in selected from the circular buffer. A bit set comprising n bits of the transport block is mapped to a data symbol on a constellation for 2 | 07-01-2010 |
20100208673 | Method of Allocating Resource in Wireless Communication System - A method of allocating resources in a wireless communication system includes allocating a plurality of physical resource blocks, each of which includes a plurality of sub-parts, to a virtual resource block, and mapping the virtual resource block to the plurality of physical resource blocks, wherein the virtual resource block is mapped to the sub-parts located in different positions in the range of each physical resource block. The number of resource elements allocated for the virtual resource block is constantly maintained. | 08-19-2010 |
20100208678 | Method of Transmitting Data Based on Adaptive Modulation and Coding - A method of transmitting data is provided. The method includes generating a frame, the frame comprising a data burst, a submap and a map wherein the submap indicates a resource allocation state of the data burst, and the map indicates a differential adaptive modulation and coding (AMC) level for the submap, and transmitting data using the frame, wherein the differential AMC level is information on change in an AMC level applied to the submap comparing with other submap in a different frame. High-speed data transmission is realized and limited radio resources can be more efficiently used. | 08-19-2010 |
20100208779 | Transmitter for Reducing Channel Selectivity - A transmitter for reducing time selectivity and/or frequency selectivity in a wireless communication system includes a plurality of transmit antennas, a phase shifter which is disposed for each transmit antenna and is configured to shift a phase of data transmitted through the transmit antenna by a phase shift value, and a channel selectivity processor configured to obtain the phase shift value by using a channel phase value fed back from a receiver. | 08-19-2010 |
20100211842 | METHOD OF TRANSMITTING DATA USING CONSTELLATION REARRANGEMENT - A data retransmission method using hybrid automatic repeat request (HARQ) includes transmitting a data block, receiving a retransmission request signal for the data block, generating a retransmission block by performing swapping or inversion between bits constituting the data block according to the retransmission request signal, and transmitting the retransmission block. | 08-19-2010 |
20110194502 | METHOD FOR TRANSMITTING VOIP PACKET - A method for transmitting a voice over Internet protocol (VoIP) packet includes allocating a radio resource for VoIP packet transmission to a user, transitioning a VoIP service from a talk period, in which the VoIP packet is transmitted using the radio resource, to a silence period in which the VoIP packet is not transmitted, releasing the radio resource during the silence period, and transitioning the VoIP service to the talk period by reallocating the radio resource. Limited radio resources can be further effectively used. | 08-11-2011 |
20110310784 | METHOD FOR PERFORMING HARQ OPERATION IN WIRELESS COMMUNICATION SYSTEM - A method of transmitting acknowledgment/non-acknowledgment (ACK/NACK) of a receiver in a wireless communication system is provided. The method includes: sharing information on an ACK/NACK transmission time with a transmitter through aperiodic signaling; receiving a data packet from the transmitter; and transmitting ACK/NACK for the data packet to the transmitter at the ACK/NACK transmission time. | 12-22-2011 |
Patent application number | Description | Published |
20100159921 | METHOD OF REPORTING CHANNEL STATE - A method of reporting a channel state for a plurality of bands includes transmitting channel quality indicators (CQIs) for the respective bands, and transmitting CQI variation information, wherein the CQI variation information comprises CQI up/down information indicating whether the CQIs of the respective bands collectively increase or decrease and a CQI variation indicating a collective variation of the CQIs of the respective bands. Accordingly, waste of resources consumed for the CQIs can be reduced. | 06-24-2010 |
20120312585 | Soft Electrode Material and Manufacturing Method Thereof - There is provided a soft electrode material including an electrode layer containing a mixture of carbon black and at least one selected from carbon nanotube and graphene, so that the soft electrode material can facilitate various transformation thereof in response to physical transformation of an electrode, such as warpage, elongation, and the like; prevent the rapid reduction in electric conductivity of an electrode while maintaining flexibility and elasticity of the electrode at the time of the transformation; and provide excellent reliability, and thus, electrical-mechanical energy conversion efficiency of a soft electronic component such as an actuator including the soft electrode material, can be increased, and electric conductivity of the electrode layer can be improved as the electrical-mechanical conversion efficiency increases. | 12-13-2012 |
20140131728 | CIGS- OR CZTS-BASED FILM SOLAR CELLS AND METHOD FOR PREPARING THE SAME - Provided is a copper indium gallium selenium (CIGS)- or copper zinc tin sulfur (CZTS)-based solar cell including a back electrode layer and a light-absorbing layer, wherein the light-absorbing layer has a composition of Cu | 05-15-2014 |