| Patent application number | Description | Published |
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| 20110070884 | METHOD FOR MULTI-POINT COOPERATION CONSIDERING DELAY IN WIRELESS COMMUNICATION SYSTEM - Provided is a method of a multi-node cooperation considering a delay in a wireless communication system. A frame format may perform scheduling so that uplink cooperation terminals having a similar delay attribute may be classified into an uplink cooperation zone, to thereby prevent interference between the uplink cooperation zone and a non-cooperation zone. An extended cyclic prefix may be applied according to a delay attribute occurring due to an application of the multi-node cooperation. A cooperation base station of an uplink and a downlink may be determined based on the extended cyclic prefix. | 03-24-2011 |
| 20110086655 | TUNNELING CONTROL METHOD AND APPARATUS FOR COORDINATED MULTI-POINT TRANSMISSION, AND METHOD FOR TRANSMITTING DATA - A tunneling control method and apparatus for a coordinated multi-point transmission, and a method of transmitting data, are provided. The tunneling control method and the data transmission method may minimize a time delay that occurs because of the coordinated multi-point transmission between base stations. | 04-14-2011 |
| 20110103503 | METHOD AND APPARATUS FOR CONTROLLING DYNAMIC CHANNEL FEEDBACK IN A MIMO NETWORK - A communication method and apparatus for coordinated multi-point (CoMP) transmission, is provided. Sizes of codebooks for a plurality of base stations may be adjusted based on a status of channels between a target terminal and a plurality of base stations. The terminal feeds back, to at least one of the plurality of base stations, channel direction information (CDI) including a number of bits of feedback. | 05-05-2011 |
| 20110110285 | SYSTEM AND METHOD FOR TRANSMITTING DATA IN A MULTI-CELL NETWORK - A communication system and method that receives data from a terminal using a cooperative reception scheme, is provided. Each terminal may generate multi-cell transmission data used for overcoming transmission delay and transmit, to each base station, a data frame including the multi-cell transmission data. | 05-12-2011 |
| 20110128939 | HIERARCHICAL-CELL COMMUNICATION SYSTEM USING ASYMMETRIC FEEDBACK SCHEME BASED ON CLASS OF ACCESS NETWORK - A small cell communication system may reduce interference occurring in a macro terminal through beamforming, even when using the same frequency resources as used by a macro communication system. For example, the small cell communication system may use a larger amount of radio resources than the macro communication system for transmission of feedback information in an uplink. For example, the small cell communication system may use a codebook having a larger size than a size of a codebook used by the macro communication system. | 06-02-2011 |
| Patent application number | Description | Published |
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| 20090092182 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING SPACE BLOCK CODING SIGNAL THROUGH ITERATIVE MULTI-USER DETECTION - A method and apparatus for transmitting and receiving a space block coding signal through Iterative Multi-user Detection is provided. The apparatus includes a multi-user interference cancellation unit which cancels multi-user interference in a received signal and outputs a first signal and a second signal that are sequentially transmitted from two transmitting antennas, a linear combiner which performs linear combination for the first signal and the second signal, and an equalizer which applies different equalization coefficients to the combined first signal and the second signal, respectively, to perform frequency-domain equalization. | 04-09-2009 |
| 20090103428 | SYSTEM FOR GENERATING SPACE FREQUENCY BLOCK CODE RELAY SIGNAL AND METHOD THEREOF - A method and system for generating a space frequency block code relay signal includes a signal detection unit which detects a received signal by receiving a first and second source signals transmitted from a first and second source nodes, a relay signal generation unit which generates a relay signal cooperating with the first and second source signals using a space frequency block code (SFBC) scheme based on the received signal, and a signal transmitter which transmits the relay signal to a destination node. | 04-23-2009 |
| 20090323643 | METHOD FOR COOPERATIVE MULTI-ANTENNA COMMUNICATION - A method of cooperative multi-antenna communication between a base station and node existing in a wireless network is provided. A cooperative multi-antenna communication method includes receiving data from at least one node of a node group that receives data from a base station, performing multiple input multiple output (MIMO) signal processing with respect to the received data, the MIMO signal processing indicating signal processing performed in a receiving end of a MIMO system, and transmitting the signal processed data to at least one target node. | 12-31-2009 |
| 20100074362 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING SIGNAL IN MULTIPLE INPUT MULTIPLE OUTPUT SYSTEM - A method and apparatus for transmitting and/or receiving a signal in a multiple input multiple output (MIMO) system are provided. An apparatus for transmitting a signal in a multiple input multiple output (MIMO) system includes an input unit to receive N | 03-25-2010 |
| 20100304682 | CLUSTERING METHOD AND COMMUNICATION DEVICE FOR COORDINATED MULTIPOINT TRANSMISSION - A communication system performing a coordinated multipoint transmission is provided. A mobile station may measure expected channel quality information when an interference of a serving base station does not exist. The serving base station may determine whether a neighbor base station and the serving base station are eligible to perform the coordinated multipoint transmission. The serving base station may determine whether the neighbor base station and the serving base station are eligible to perform the coordinated multipoint transmission using a criterion associated with an evaluation of an increase in a transmission rate of the mobile station. | 12-02-2010 |
| 20100330917 | COMMUNICATION SYSTEM FOR DISTRIBUTEDLY MANAGING INTERFERENCE USING FEEDBACK MESSAGE - A method of operating a target terminal being serviced by a serving base station is provided. In a downlink case, the target terminal being served by the serving base station may provide a feedback message to a neighboring base station. The feedback message may be used by the neighboring base station to verify channel information between the serving base station and the target terminal, and channel information between the neighboring base station and the target terminal. In an uplink case, the neighboring base station may provide the feedback message to the target terminal. The target terminal may transfer, to the serving base station, channel information between the neighboring base station and a particular terminal, and channel information between the neighboring base station and the target terminal that are verified based on the feedback message. The feedback message may be transferred using a common shared channel or a random access channel. | 12-30-2010 |
| 20110009129 | DEVICE AND METHOD OF ESTIMATING LOCATION OF TERMINAL USING SEQUENCES TRANSMITTED FROM BASE STATIONS - A terminal receives a unique sequence from each of at least two base stations, and transmits a mixture of quantized unique sequences to a serving base station. The serving base station extracts components respectively corresponding to base stations from the mixture of the quantized unique sequences, and estimates a location of a terminal based on the extracted components. The serving base station may calculate a received signal strength or a delay for each of the unique sequences received by the terminal, based on the extracted components, and estimate the location of the terminal based on the received signal strength or the delay. In addition, the terminal may estimate its own location by performing an algorithm used by the serving base station. | 01-13-2011 |
