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 |
20110081933 | APPARATUS AND METHOD FOR TRANSMITTING/RECEIVING SIGNAL IN WIRELESS COMMUNICATION SYSTEM - Disclosed are apparatuses and methods for signal transmission/reception between a user equipment (UE) and a base station (BS) or cell in a wireless communication system in which a position of a US may be determined by identifying according to a positioning reference signal (PRS) pattern. By a method of transmitting PRSs using a more effective and efficient muting method, it is possible to reduce interference between multiple base stations that simultaneously transmit a same PRS pattern. | 04-07-2011 |
20110170623 | APPARATUS AND METHOD FOR CHANNEL INFORMATION FEEDBACK, BASE STATION RECEIVING THE CHANNEL INFORMATION, AND COMMUNICATION METHOD OF THE BASE STATION - Disclosed is a wireless communication system including an apparatus and a method for feeding back channel information of a User Equipment (UE); a Base Station (BS) for receiving channel information of a UE and for communicating with the UE; and a communication method of the BS which can dynamically switch between Single-User Multiple-Input Multiple-Output (SU-MIMO) and Multiple-User Multiple-Input Multiple-Output (MU-MIMO) access schemes. | 07-14-2011 |
20110206008 | PACKET SWITCHED RADIO TELECOMMUNICATION SYSTEM SUPPORTING HARD HANDOVER AND METHOD FOR HARD HANDOVER - A packet switched radio telecommunication system supporting hard handover adapts Always_on technology to a link between a target packet data serving node (PDSN) and a support PDSN. The support PDSN assigns a temporary IP address to a mobile terminal in its service area, and transmits handover data and the mobile terminal's temporary IP address to the target PDSN via a direct link when the mobile terminal leaves the service area. The target PDSN, upon receiving a registration request for the temporary IP address from the mobile terminal moved to its service area, temporarily registers the temporary IP address in an IP pool. The target PDSN receives down-link frame data for the mobile terminal at the temporarily registered IP address from the support PDSN via the direct link. A new temporary IP address is assigned by the target PDSN when data transmission/reception is complete to the mobile terminal. | 08-25-2011 |
20110255491 | METHOD AND APPRATATUS FOR RESOURCE ALLOCATION IN WIRELESS COMMUNICATION SYSTEM - In a wireless communication system, a base station, a resource allocation device and method, a user equipment, a resource allocation reception device and method that utilize encoding and decoding techniques for transmitting through communication systems with uplinks and downlinks, the resource allocation information used to share transmission resources in a wireless communication system. | 10-20-2011 |
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 |
20120093253 | POWER ALLOCATION METHOD FOR WIRELESS COMMUNICATION SYSTEM, APPARATUS FOR SAME, AND TRANSCEIVER DEVICE USING THIS FORM OF SIGNAL TRANSMISSION - Disclosed is a wireless communication system and a power allocation in the wireless communication system. | 04-19-2012 |
20120149297 | METHOD AND SYSTEM FOR TRANSCEIVING GROUP-SPECIFIC INFORMATION IN A COORDINATED MULTI-ANTENNA TRANSCEIVER SYSTEM - The present description relates to a method for transceiving dedicated group-specific information for a coordinated multi-antenna transceiver service in a coordinated multi-antenna transceiver system. The present description relates to a scheme for transmitting an uplink reference signal using group-specific information of user equipment for the thus-configured coordinated multi-antenna transceiver system. Here, the group-specific information is UE-specific in the event the information varies in accordance with a portion of user equipment in a cell or in accordance with the characteristics of user equipment. | 06-14-2012 |
20120155355 | METHOD AND SYSTEM FOR TRANSMITTING/RECEIVING DATA IN A WIRELESS COMMUNICATION SYSTEM - The present specification relates to a wireless communication system, and more particularly, discloses a method and system for discontinuous reception for data transmission/reception in a wireless communication system. The present specification discloses a scheme in which a terminal checks a parameter for controlling the discontinuous reception (DRX) of a second component carrier, said parameter being different from the parameter for controlling the discontinuous reception (DRX) of a first component carrier used by a base station, and receives data through the discontinuous reception of the first component carrier and of the second component carrier. | 06-21-2012 |
20130044713 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING RESOURCE ALLOCATION INFORMATION FOR APERIODIC TRANSMISSION OF SOUNDING REFERENCE SIGNAL - A method for transmitting resource allocation information for an aperiodic transmission of a sounding reference signal (SRS) includes: determining, by a base station (BS), resource to be allocated for a transmission of an aperiodic SRS to a user equipment (UE) to which an aperiodic SRS is to be transmitted; transmitting indication information regarding the determined resource by using extra information of a physical control channel; and receiving an aperiodic SRS transmitted by the UE in the determined resource after the transmission of the physical control channel. | 02-21-2013 |
20130090146 | APPARATUS AND METHOD FOR TRANSMITTING INFORMATION REGARDING POWER COORDINATION IN MULTI-COMPONENT CARRIER SYSTEM - A method and apparatus for transmitting information regarding power coordination (PC) by a mobile station (MS) in a multi-component carrier system are provided. The method includes: setting information regarding power coordination (PC) indicating an amount or a range of power which is used to adjust uplink maximum transmission power of the MS, and transmitting the information regarding PC to a base station (BS). The information regarding PC is varied according to the number of component carriers configured in the MS. A scheduling error in the BS due to ambiguity of PC can be reduced and scheduling can be performed adaptively to maximum transmission power of a provided mobile station (MS) or a component carrier. | 04-11-2013 |
20130142098 | APPARATUS AND METHOD FOR TRANSMITTING INFORMATION REGARDING POWER COORDINATION IN MULTI-COMPONENT CARRIER SYSTEM - A method and apparatus for transmitting information regarding power coordination by a mobile station (MS) in a multi-component carrier system are provided. The method includes: generating information regarding power coordination (PC) indicating an amount or a range by which uplink maximum transmission power of the MS is to be adjusted; and transmitting the information regarding PC to a base station (BS). Accordingly, a scheduling error in the BS due to ambiguity of power coordination can be reduced and scheduling can be performed adaptively to maximum transmission power of a provided mobile station (MS) or a component carrier. | 06-06-2013 |
20130148619 | APPARATUS AND METHOD FOR TRANSMITTING INFORMATION ON POWER HEADROOM IN MULTIPLE COMPONENT CARRIER SYSTEM - There are provided an apparatus and method for transmitting power headroom information in a multiple component carrier system. The method includes finding Combination Power Headroom (CPH), that is a power headroom, calculated in an User Equipment (UE)-specific way with consideration taken of uplink transmission through a plurality of component carriers configured in the UE, generating CPH information used to inform an evolved NodeB (eNodeB:eNB) of the CPH, and sending the CPH information to the eNB. According to the present invention, power headroom for a combination component carrier is provided to an eNB in a wireless communication system in which a carrier aggregation is used. Accordingly, reliable dynamic carrier aggregation scheduling can be induced, and thus uplink transmission performance can be improved. | 06-13-2013 |