Patent application number | Description | Published |
20100103897 | APPARATUS AND METHOD FOR ALLOCATING RESOURCE IN A WIRELESS COMMUNICATION SYSTEM USING OFDMA - An apparatus for allocating a resource in a wireless communication system using an orthogonal frequency division multiple access (OFDMA) scheme includes an analysis unit to analyze a signal received from a terminal over a channel to determine characteristics of the channel; an allocation unit to allocate a first frequency band to the terminal based on the characteristics of the channel; and a frequency hopping unit to perform frequency hopping from the first frequency band to a second frequency band after a first time period. A method for allocating the resource in an OFDMA wireless communication system includes analyzing a signal received from a terminal over a channel to determine characteristics of the channel, allocating a first frequency band to the terminal based on the characteristics of the channel, and performing frequency hopping from the first frequency band to a second frequency band after the first time period. | 04-29-2010 |
20100135493 | METHOD AND APPARATUS FOR GENERATING PSEUDO RANDOM SEQUENCE IN BROADBAND WIRELESS COMMUNICATION SYSTEM - Provided are a method and an apparatus for generating pseudo random sequence to generate pseudo random sequences which have larger sizes and are different from each other in a wireless communication system; a method for generating pseudo random sequence in a wireless communication system, comprising generating a first output sequence, generating a second output sequence, and generating a third output sequence; and an apparatus to generate pseudo random sequence in a wireless communication system, comprising a first linear feedback shift register (LFSR), a second LSFR, and a third LFSR, a first initial value mapper, a second initial value mapper, a third initial value mapper, and an N delay operator. | 06-03-2010 |
20100232536 | PRECODING APPARATUS FOR MULTI-USER, MULTI-ANTENNA, WIRELESS TRANSMISSION SYSTEM - A multi-antenna wireless transmission apparatus for multiple receiving terminals includes a channel characteristic acquiring unit to acquire characteristic parameters of a wireless transmission channel between a transmitting party antenna and a receiving party antenna, a coefficient calculator to use the characteristic parameters of the wireless transmission channel to calculate coefficients configured such that the transmitting party sets a ratio of received power for a transmission signal at the receiving party to intensity of interference and noise of the transmission signal, and a precoder to multiply an input signal by a matrix whose elements are the coefficients calculated by the coefficient calculator and to output an output signal. The output signal is to be transmitted from the transmitting party antenna to the receiving party antenna. | 09-16-2010 |
20100232537 | APPARATUS FOR TRANSMISSION THROUGH MULTIPLE ANTENNAS - A space-time coding apparatus receives two groups of inputs and outputs two groups of outputs. A configuration of each output group is based on spatial diversity and a configuration between the groups of outputs is based on spatial multiplexing. The space-time coding apparatus may include two spatial diversity coders whose outputs are each connected two spatial multiplexing coders. A plurality of antennas may be respectively connected to outputs of each spatial multiplexing coder. Coding coefficients are configured so that a first wireless receiving terminal corresponding to a first group of outputs receives only input signal components of a first group of inputs, and a second wireless receiving terminal corresponding to a second group of outputs receives only input signal components of a second group of inputs. | 09-16-2010 |
20110274193 | APPARATUS AND METHOD FOR GENERATING SCRAMBLING CODES IN A RADIO COMMUNICATION SYSTEM - An apparatus and method for generating a scrambling code in a radio communication system is disclosed. In particular, an apparatus and method for generating a scrambling code using a Gold-like sequence even when m is a multiple of 4 for a length 2 | 11-10-2011 |
20120009913 | FEMTOCELL ACCESS NODE, FEMTOCELL SYSTEM, AND DATA TRANSMISSION METHOD FOR THE SYSTEM - A femto cell connection node, a femto cell system, and a data transmission method of the system are disclosed. | 01-12-2012 |
20120320853 | METHOD FOR TRANSMITTING DATA AND CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM, A SENDING DEVICE THEREFOR AND A RECEIVING DEVICE THEREFOR - A method and device for sending and receiving control information and data between a terminal and an eNB in a wireless communication system are disclosed, and a method and device for sending and receiving control information and data in accordance with hybrid automatic repeat technology are disclosed. A multiplexer outputs a plurality of hybrid repeat (HARQ) blocks that store data blocks to be transmitted via a plurality of component carrier waves, and outputs multiplexed data obtained by the multiplexing of the data blocks. Repeat data is transmitted by using a component carrier wave that differs from the component carrier wave used during the initial transmission, thereby obtaining gain of diverse channel states for predetermined component carrier waves and frequency bands, and so improving HARQ performance. | 12-20-2012 |
20130155915 | USER EQUIPMENT, PDSCH A/N TRANSMITTING METHOD THEREOF, TRANSMISSION/RECEPTION POINT, AND PDSCH A/N RECEIVING METHOD THEREOF - The present invention relates to a system that includes a transmission/reception point and a user equipment having different configurations in inter-band and performs a TDD (Time Division Duplex) method. | 06-20-2013 |
20130301452 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method and an apparatus for transmitting and receiving a reference signal in a wireless communication system. In the method, in order to dynamically switch an uplink (UL) Demodulation-Reference Signal (DM-RS) according to the communication environment, such as CoMP and MU-MIMO, a parameter set for generation of a reference signal sequence is configured to include a Virtual Cell Identifier (VCID) parameter configured by information of a total of 9 bits and a cyclic shift hopping initial value parameter c | 11-14-2013 |
20140185573 | METHOD AND APPARATUS FOR TRANSMITTING A REFERENCE SIGNAL IN A WIRELESS COMMUNICATION SYSTEM - Provided is a method and apparatus for transmitting a reference signal by a base station in a multi-cell cooperative communication environment. The method for transmitting the reference signal according to the present invention comprises the steps of: transmitting cell ID information of a second cell to a terminal which uses a first cell as a serving cell; generating reference signal sequences in the first cell and the second cell on the basis of the same cell ID; and performing resource element mapping on each of the generated reference signals, generating signals, and transmitting the signals to the terminal, wherein the same cell ID used in generating the reference signal sequences is a cell ID of the first cell or a cell ID of the second cell. | 07-03-2014 |
20140293943 | METHOD AND APPARATUS FOR TRANSMITTING A REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM - The present invention is related to a method and an apparatus for transmitting a reference signal in a wireless communication system. The present specification comprises transmitting at least one of the user equipment (UE)-specific value which is the parameter used for generating the UE-specific reference signal sequence to the UE, selecting one value out of at least one of the UE-specific value and cell-specific value, calculating an initialization value of pseudo-noise (PN) sequence based on the value selected, generating a first reference signal sequence using the initialization value of PN sequence, mapping the first reference signal sequence to a resource element, and transmitting a reference signal to the UE using the resource element to which the first reference signal sequence is mapped. | 10-02-2014 |
20150029912 | USER EQUIPMENT, PDSCH A/N TRANSMITTING METHOD THEREOF, TRANSMISSION/RECEPTION POINT, AND PDSCH A/N RECEIVING METHOD THEREOF - The present invention relates to a system that includes a transmission/reception point and a user equipment having different configurations in inter-band and performs a TDD (Time Division Duplex) method. | 01-29-2015 |
20150043521 | METHOD FOR MAPPING HYBRID ARQ INDICATOR CHANNEL - The present invention relates to a method for mapping a hybrid ARQ indicator channel, which is transmitted to a downlink in a wireless communication system, to a frequency and a time resource. | 02-12-2015 |
20150078278 | HYBRID ARQ INFORMATION TRANSMITTING METHOD AND HYBRID ARQ INFORMATION RECEIVING METHOD - The present application relates to a method for transmitting and receiving hybrid ARQ information transmitted via a downlink in a wireless communication system. In particular, the method for a transmission point to transmit hybrid automatic repeat request (ARQ) information in a system having multiple transmission points comprises, as technical features, the steps of: transmitting virtual cell identity (ID) information to a terminal; and transmitting, using a resource which has been determined on the basis of the virtual cell ID information, hybrid ARQ information for indicating whether uplink data transmitted from the terminal has been received or not. | 03-19-2015 |