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| 20120327804 | METHOD AND APPARATUS FOR CONTROLLING UPLINK TRANSMISSION POWER - The present description relates to a method for controlling uplink power in a distributed multi-node system, comprising the following steps: receiving reference signals from a plurality of antenna nodes containing at least one antenna; estimating average propagation loss on the basis of the receiving power of the reference signals received from the plurality of antenna nodes; receiving, via a downlink control channel, noise and interference (NI) information from a base station which contains the plurality of antenna nodes; and determining uplink transmission power using the estimated average propagation loss and the received noise and interference information. | 12-27-2012 |
| 20130029591 | METHOD FOR COOPERATIVE DATA TRANSMISSION AMONG TERMINALS, AND METHOD FOR LUSTERING COOPERATIVE TERMINALS FOR SAME - The present description relates to a method in which a base station clusters cooperative terminals so as to enable cooperative data transmission among terminals. The clustering method comprises the following steps: identifying terminals which can transmit data of an opponent terminal; generating a cooperative cluster containing the identified terminals; transmitting information on the cooperative cluster to the terminals which belongs to the cooperative cluster; and receiving data of a second terminal from a first terminal, which are terminals belonging to the cooperative cluster. | 01-31-2013 |
| 20130034136 | METHOD OF COOPERATIVE DATA TRANSMISSION BETWEEN TERMINALS AND A METHOD OF RECEIVING DATA - The present invention relates to a method for reducing power consumption when performing the cooperative transmission in a cooperative transmission system, the method comprising: defining a cooperative transmission participation rate or a cooperative transmission non-participation rate to adjust the participation rate of at least one terminal capable of cooperative transmission within at least one cooperative cluster, the participation rate adjustment being carried out in the at least one terminal capable of cooperative transmission by generating a random value having a preset range; comparing the generated random value with a threshold as a reference indicating whether a corresponding terminal is participating in cooperative transmission; and determining whether the corresponding terminal has participated in cooperative transmission, on the basis of the comparison result. | 02-07-2013 |
| 20130115966 | METHOD AND DEVICE FOR TRANSMITTING A FEEDBACK SIGNAL IN A MULTI-NODE SYSTEM - The present invention relates to wireless communication, and particularly, to a method and device for transmitting a feedback signal of a terminal in a multi-node system. The method for a terminal to transmit feedback information in a multi-node system including a plurality of nodes and a base station for controlling same includes: transmitting first information upon the request of resource allocation so as to give notice that there is information to be transmitted to the base station; receiving information from the base station at the request for the transmission of second information necessary for the resource allocation; and transmitting the requested second information to the base station. The feedback information may be transmitted to the base station together with the first information or the second information. | 05-09-2013 |
| 20130128761 | METHOD AND DEVICE WHEREBY BASE STATION ALLOCATES NODES TO TERMINAL IN A SEMI-STATIC FASHION IN MULTI-NODE SYSTEM - The present invention relates to wireless communication, and more specifically, to a method and device whereby a base station allocates nodes to a terminal in a semi-static fashion in a multi-node system. The method, according to one aspect of the present invention, whereby a base station allocates at least a portion of a plurality of nodes to a terminal in a multi-node system comprising the plurality of nodes and the base station for controlling the plurality of nodes, comprises the steps of: receiving, from the terminal, data showing at least one first node that is preferred among the plurality of nodes by the terminal; and transmitting, to the terminal, first data for allocating the first node(s) to the terminal. The first data may comprise pilot data which is required by the terminal in order to transmit, to the base station, feedback data concerning the first node. | 05-23-2013 |
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| 20110019635 | METHOD FOR TRANSMITTING AND RECEIVING DATA USING PILOT STRUCTURE - A method for efficiently transmitting and receiving data in a wireless access system and a pilot allocation structure for the same are provided. In one aspect of the present invention, a method for transmitting and receiving data in a wireless access system, the method including transmitting data using a resource block constructed taking into consideration channel estimation capabilities and data transfer rate, and receiving data using the resource block. Here, the resource block may have a 6×6 structure constructed with 6 OFDM symbols and 6 subcarriers, and one or more first pilot symbols may be allocated to prescribed OFDM symbols of a first subcarrier and a fifth subcarrier of the resource block. Moreover, the first pilot symbols may be allocated to the resource block at a predetermined allocation rate taking into consideration a number of transmit antennas. | 01-27-2011 |
| 20110149897 | BANDWIDTH REQUEST METHOD AND BANDWIDTH ALLOCATION METHOD IN BROADBAND WIRELESS ACCESS SYSTEM - The present invention deals with a method for requesting and allocating an uplink resource efficiently in a broadband wireless access system. The method of the present invention wherein a terminal requests bandwidth in a broadband wireless access system may include a step in which a bandwidth request header (BR header), including a bandwidth request message and a high-speed access message, is transmitted to a base station; a step in which uplink grant (UL grant) information corresponding to the information included in said bandwidth request message and said high-speed access message is received from said base station; and a step in which the uplink resource indicated by said uplink grant information is used to transmit data to said base station. | 06-23-2011 |
| 20120087273 | METHOD AND APPARATUS FOR SIGNAL TRANSMISSION IN COMP SCHEME - The present system relates to a method for signal transmission in a CoMP scheme. Each cell that performs a CoMP operation in capable of setting and allocating a particular carrier and a particular CoMP zone in order to execute a particular CoMP scheme. Using the particular CoMP zone and the allocated carrier, a terminal can transmit and receive a CoMP signal corresponding to the particular CoMP zone and the allocated carrier. The terminal can perform measurement of a carrier or a particular zone within the carrier and select a carrier or a particular zone, on the basis of the measurement value. On the other hand, a serving base station can select a carrier or a particular zone, on the basis of the measurement value that is received from the terminal. | 04-12-2012 |
| 20120170679 | METHOD FOR TRANSCEIVING REFERENCE SIGNAL IN COMP OPERATION IN WIRELESS COMMUNICATION SYSTEM THAT SUPPORTS AN MU-MIMO SCHEME - Disclosed is a method for efficiently transceiving information required for implementing a multi-cell-based CoMP MU-MIMO scheme. For this purpose, a base station which performs CoMP operation generates: (A) a reference signal sequence on the basis of a specific base station; or generates (B) the same reference signal sequence on the basis of a CoMP ID, and transmits the generated sequence to user equipment. To support an MU-MIMO scheme and to perform a joint processing method, the base station must additionally transmit CoMP reference signal sequence information, frequency shift information, etc. to the user equipment in said (A) case, and generates a CoMP reference signal on the basis of a preset CoMP set ID and transmits the generated signal to the user equipment in said (B) case. | 07-05-2012 |
| 20120188904 | METHOD FOR TRANSMITTING COMP FEEDBACK INFORMATION IN WIRELESS COMMUNICATION SYSTEM AND TERMINAL APPARATUS - Disclosed are a method for transmitting CoMP feedback information in a wireless communication system and a terminal apparatus using the same. Measured values of adjacent cells for performing a CoMP operation can be generated by using measured values defined in an existing LTE system. Consequently, the present invention doesn't need to define new measured values in a LTE-Advanced system. | 07-26-2012 |
| 20120282966 | CHANNEL QUALITY INFORMATION TRANSMISSION METHOD IN WIRELESS COMMUNICATION SYSTEM ADOPTING COORDINATED MULTI-POINT SCHEME AND AN APPARATUS THEREFOR - The present invention relates to a channel quality information transmission method in a communication system adopting a coordinated multi-point scheme. A terminal receives signals, through the same band, from a serving base station and at least one neighbor base station, respectively, which are included in a CoMP set operating in a joint processing mode. Next, the terminal generates combined channel quality information on a single signal obtained by combining the signals received through the same band, and then transmits the information to the serving base station. The combined channel quality information is generated using information on a combined channel obtained by combining channels between the terminal and the serving base station and between the terminal and each one of the at least one neighbor base station, which are included in the CoMP set. | 11-08-2012 |
| 20120322477 | APPARATUS FOR TRANSMITTING AND RECEIVING SIGNAL IN DISTRIBUTED ANTENNA SYSTEM - The present invention relates to a method for receiving a signal through a terminal in a distributed antenna system (DAS) comprising the steps of: receiving composition information of a local midamble corresponding to a terminal or a terminal group including the terminal from a base station which belongs to the DAS; and receiving the local midamble from the base station, and the local midamble can be a midamble corresponding to one or more effective transmission antennas associated with the terminal or the terminal group of a plurality of antennas of the base station. | 12-20-2012 |
| 20130083743 | METHOD FOR TRANSMITTING PRECODING MATRIX INFORMATION AND USER DEVICE, AND METHOD FOR TRANSMITTING DATA TO PLURALITY OF USER DEVICES AND BASE STATION - The present invention relates to a precoding matrix information transmission method and a user device, and provides a method for transmitting precoding matrix information by a particular user device among user devices that receive a signal transmitted from one base station. The method comprises the steps of: determining, from a predetermined codebook, a first precoding matrix which is a precoding matrix for the particular user device during signal reception, and determining one or more second precoding matrices for the other user devices which are to be multiplexed in a predetermined resource region with the particular user device, wherein the one or more second precoding matrices are determined within a codebook subset of the predetermined codebook linked with the first precoding matrix; and transmitting, to the base station, first precoding matrix information indicating the first precoding matrix and second precoding matrix information indicating the one or more second precoding matrices. | 04-04-2013 |
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| 20110002309 | METHOD OF TRANSMITTING ACK/NACK SIGNAL IN WIRELESS COMMUNICATION SYSTEM - A method of transmitting an acknowledgement (ACK)/non-acknowledgement (NACK) signal in a wireless communication system is provided. The method includes: allocating a radio resource; and transmitting the ACK/NACK signal through an ACK channel in a location determined by an index for the radio resource, wherein the radio resource includes at least one resource unit which is a basic unit for resource allocation, the resource unit is at least one of a localized resource unit including subcarriers contiguous in a frequency domain and a distributed resource unit including subcarriers distributed in the frequency domain, an index of the localized resource unit is directly mapped to an index of the ACK channel, and an index of the distributed resource unit is mapped to an index of the ACK channel according to a permutation rule. | 01-06-2011 |
| 20110149942 | Method of Transmitting Data in Multiple Antenna System - A method of transmitting data in a multiple antenna system includes transmitting first data through a first pilot pattern zone in which pilots are arranged in a specific pilot pattern in a permutation zone having at least one tile comprising a plurality of orthogonal frequency division multiplexing (OFDM) symbols and a plurality of subcarriers, and transmitting second data through a second pilot pattern zone in which pilots are arranged in another pilot pattern different from the pilot pattern of the first pilot pattern zone in the permutation zone. Accordingly, a plurality of pilot patterns can be simultaneously used in one permutation zone, and thus waste of radio resources caused by the use of unnecessary pilots can be reduced by adaptively assigning pilots according to various channel environments and performances of user equipments. | 06-23-2011 |
| 20120106500 | METHOD AND APPARATUS FOR FEEDBACK TRANSMISSION IN WIRELESS COMMUNICATION SYSTEM - A method and an apparatus for feedback transmission in a wireless communication system are provided. A terminal selects at least one subband among plural subbands constituting a set of subbands and transmits information about feedback measured for the at least one subband. The feedback information contains an index of the at least one subband, and the at least one subband is selected in consideration of resource mapping of the plural subbands. | 05-03-2012 |
| 20120155374 | METHOD AND APPARATUS FOR SETTING A FRAME IN A WIRELESS COMMUNICATION SYSTEM COMPRISING A RELAY STATION - Provided are a method and apparatus for setting a frame of a relay station in a wireless communication system. A base station sets an access zone frame and a relay zone frame adjacent the access zone frame. The access zone frame comprises a downlink (DL) access zone in which the base station or the relay station transmits a signal to a terminal, and an uplink (UL) access zone in which the terminal transmits a signal to the base station or to the relay station. The relay zone frame comprises a DL relay zone in which the base station transmits a signal to the terminal or to the relay station, and a UL relay zone in which the terminal or the relay station transmits a signal to the base station. | 06-21-2012 |
| 20120250560 | METHOD AND APPARATUS FOR TRANSMITTING FEEDBACK INFORMATION IN A WIRELESS COMMUNICATION SYSTEM CONTAINING A RELAY STATION - Provided are a method and apparatus for transmitting feedback information in a wireless communication system containing a relay station. A subband is divided by a plurality of partitions, and the relay station measures feedback information for each of the partitions, and transmits feedback information measured for each of the partitions cyclically at a predetermined interval. Each partition can be a physical resource unit (PRU), and one PRU contains 18 subcarriers. Feedback information for each partition can be cyclically transmitted in the order fixed in the subband. | 10-04-2012 |
| 20120320857 | METHOD AND APPARATUS FOR FEEDBACK TRANSMISSION IN A WIRELESS COMMUNICATION SYSTEM - The present invention provides a method and an apparatus for feedback transmission in a wireless communication system. A terminal receives downlink control information from a base station and transmits to the base station event-driven feedback information over a first feedback channel. The downlink control information includes information about a short-term feedback period that corresponds to a short period of time for transmitting feedback information and information about a long-term feedback period that corresponds to a long period of time for transmitting feedback information, and the event-driven feedback information is transmitted on the basis of the long-term feedback period. | 12-20-2012 |
| 20120320860 | MULTICARRIER BASED COMMUNICATION METHOD AND DEVICE - Provided are a multicarrier based communication method and device. A mobile station activates a first carrier, and activates a second carrier adjacent to the first carrier. Defined within the first carrier there is a first frame comprising a legacy UL (uplink) region and an AAI (Advanced Air Interface) UL region; defined within the second carrier there is a second frame comprising an AAI UL region in the first frame occupy frequencies that differ from each other; and guard subcarriers between the AAI UL region of the first frame and the AAI UL region of the second frame are not used for data transmission. | 12-20-2012 |
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| 20080298315 | Method of Transmitting and Receiving Information of Allocating Uplink Region in Broadband Wireless Access - A method of receiving the uplink region allocation information is disclosed. In a broadband wireless access system, in which a mobile terminal receives uplink region allocation information, the present invention includes the steps of receiving an uplink map message from which an uplink map information element (UL-MAP IE) for a ranging region or an uplink bandwidth request region is omitted from a base station and receiving information for a region for a ranging region or uplink bandwidth request using a message periodically transmitted for a control information transmission for an uplink channel. By transmitting uplink region allocation information via a periodically transmitted message, the uplink region allocation information can be efficiently transmitted. | 12-04-2008 |
| 20090257395 | CQICH ALLOCATION REQUEST HEADER FOR COMMUNICATING FEEDBACK INFORMATION - A method of communicating feedback information between a mobile station and a base station comprises determining a need to request bandwidth allocation; providing information to a base station according to the determining, wherein the information indicates bandwidth allocation for a fast feedback channel; and performing communication with the base station upon bandwidth allocation according to the provided information. | 10-15-2009 |
| 20110122848 | METHOD OF TRANSMITTING AND RECEIVING INFORMATION OF ALLOCATING UPLINK REGION IN BROADBAND WIRELESS ACCESS SYSTEM - A method of receiving the uplink region avocation information is disclosed. In a broadband wireless access system, in which a mobile terminal receives uplink region allocation information, the present invention includes the steps of receiving an uplink map message from which an uplink map information element (UL-MAP IE) for a ranging region or an uplink bandwidth request region is omitted from a base station and receiving information for a region for a ranging region or uplink bandwidth request using a message periodically transmitted for a control information transmission for an uplink channel. By transmitting uplink region allocation information via a periodically transmitted message, the uplink region allocation information can be efficiently transmitted. | 05-26-2011 |
| 20120014340 | CQICH ALLOCATION REQUEST HEADER FOR COMMUNICATING FEEDBACK INFORMATION - A method of communicating feedback information between a mobile station and a base station comprises determining a need to request bandwidth allocation; providing information to a base station according to the determining, wherein the information indicates bandwidth allocation for a fast feedback channel; and performing communication with the base station upon bandwidth allocation according to the provided information. | 01-19-2012 |
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| 20080238764 | Method and System for Determining Position of Terminal by Using Gps Terminal and Location Detector in Gps Satellite-Invisible Area - The method for finding location of a GPS terminal in a GPS satellite-invisible area by using a mapping server including the mobile terminal, a location detector, a PDE, and a database, comprising: (a) obtaining a reference pilot signal of a base station or a repeater and a LD pilot signal from the location detector; (b) transmitting information on the reference pilot signal or the LD pilot signal to the PDE, if a strength of the reference pilot signal or the LD pilot signal is determined to be larger than a prescribed value; (c) calculating a pseudo noise code phase value per chip from the PSMM; (d) transmitting the pseudo noise code phase value to the LD mapping server, if the pseudo noise code phase value calculated at step (c) is determined to be a pseudo noise code phase value served for a location detection; and (c) obtaining a location information of the GPS terminal by using the pseudo noise code phase value transmitted at step (d). | 10-02-2008 |
| 20090023449 | METHOD AND SYSTEM FOR PERFORMING HANDOVER OF MULTIMODE-MULTIBAND TERMINAL BY USING MULTI TARGET CELL IN MOBILE COMMUNICATION ENVIRONMENT - Disclosed are a method and a system for performing handover of a multimode-multiband terminal by using multi-target cells in a mobile communication environment. The method for performing handover of a multimode-multiband terminal using multi-target cells in a mobile communication environment, which increases a probability of handover and improves communication quality by using the multi-target cells in a mobile communication system including a CDMA- | 01-22-2009 |
| 20090098891 | METHOD AND SYSTEM FOR RING BACK TONE ALTERNATIVE SERVICE BASED ON TERMINAL AND MOBILE COMMUNICATION TERMINAL THEREFOR - Disclosed is a method and a system for providing a terminal-based ringback tone substitute service, as well as a mobile communication terminal for the same. The method includes the steps of (a) receiving a request for an originating call for voice communication with a called terminal from a calling terminal; (b) transmitting a ringback tone start message to the calling terminal, the ringback tone start message being a control message informative of beginning of a ringback tone section; (c) paging the called terminal; (d) transmitting a ringback tone termination message to the calling terminal, the ringback tone termination message being a control message informative of ending of the ringback tone section, and connecting the voice communication between the calling terminal and the called terminal when a response to paging is received from the called terminal; and (e) transmitting the ringback tone termination message to the calling terminal and transmitting unanswered messages to the calling terminal when no response to the paging is received from the called terminal. The mobile communication terminal can play a high-quality ringback tone substitute without being affected by the voice channel environment. | 04-16-2009 |
| 20100062792 | METHOD AND SYSTEM FOR PROVIDING LOCATION MEASUREMENT OF NETWORK BASED TO MOBILE COMMUNICATION TERMINAL BY USING G-PCELL DATABASE - Disclosed are a method and a system for providing a mobile communication terminal with network-based location measurement by using a G-pCell database. The method and system are advantageous in that, when a mobile communication system employs a network-based location measurement scheme, the influence of repeaters is reduced to improve the positioning stability and measurement accuracy and provide more stable location-based services. | 03-11-2010 |
| 20100214975 | FAST DATA-LINK CONNECTION METHOD FOR SAVING CONNECTION TIME IN CDMA 2000 NETWORK - Disclosed herein is a fast data call connection method capable of reducing a connection time and increasing the probability of connection success in a CDMA 2000 network. | 08-26-2010 |
