| Patent application number | Description | Published |
|---|
| 20100322174 | METHOD AND APPARATUS FOR A MOBILE SELECTION BASED INITIAL ACCESS SCHEME IN A MULTICARRIER SYSTEM - A method and apparatus for initial access of a mobile device in multi-carrier system. A base station transmits initial access resource information about the entire system band to the mobile device through a specific carrier to which the mobile device tries initial access. The mobile device determines an uplink initial access band by using received initial access resource information. The base station enables initial access through a predefined downlink response band. | 12-23-2010 |
| 20100322343 | COMMUNICATION METHOD AND APPARATUS USING CODEBOOK IN MIMO SYSTEM - A method and apparatus for transmitting and receiving signals using a codebook which maps each codeword to at least two different antennas is provided for a MIMO system. A transmission method includes mapping multiple codewords to multiple layers; mapping the multiple layers to multiple antennas using a precoding matrix selected from a rank-3 codebook which is designed to map the codewords to different antennas; and transmitting the codewords through paths formed by mapping the layers and the antennas. The precoding matrix of the rank-3 codebook is designed to equalize transmit power ratios between the antennas. The communication method and apparatus is advantageous to solve the problem of transmit power imbalance among the layers and the problem of performance degradation at the high SNR region in the conventional system using the rank-3 precoding matrices. | 12-23-2010 |
| 20110081935 | LTE-A SYSTEM AND UPLINK POWER CONTROL METHOD THEREOF - An LTE-A system and power control method for controlling cell interference based on codeword-specific transmission power adjustment with a transmission power control offset parameter. The method includes transmitting a parameter K | 04-07-2011 |
| 20110085483 | METHODS FOR POWER HEADROOM REPORTING, RESOURCE ALLOCATION, AND POWER CONTROL - A method and apparatus for power headroom reporting are provided. The power headroom reporting method for a mobile terminal may include determining whether a Physical Uplink Shared Channel (PUSCH) transmission and a Physical Uplink Control Channel (PUCCH) transmission are allowed to occur in a same subframe; determining whether an event for requesting power headroom reporting is generated; and reporting a first power headroom and a second power headroom to a base station. | 04-14-2011 |
| 20110170435 | METHOD FOR PROCESSING CSI-RS IN WIRELESS COMMUNICATION SYSTEM - A method for processing a Channel State Information Reference Signal (CSI-RS) in a wireless communication system based on a multiple access scheme is provided. The CSI-RS transmission method defines a plurality of CSI-RS patterns, assigns the CSI-RS patterns to individual cells, uses the CSI-RSs alternately per Physical Resource Block (PRB) so as to utilize the transmission powers of all antenna ports for transmitting CSI-RSs, transmits Coordinated Multi Point (CoMP) CSI-RSs and non-CoMP CSI-RSs separately, and mutes specific resources in association with the CSI-RS pattern of adjacent cells. | 07-14-2011 |
| 20110194536 | METHOD FOR INDICATING A DM-RS ANTENNA PORT IN A WIRELESS COMMUNICATION SYSTEM - A control information interpretation method for use in a mobile communication system including a terminal and a base station, wherein the terminal receives, from the base station, control information including transport block information and DeModulation Reference Signal (DM-RS) antenna port allocation indication information, checks a number of the transport blocks allocated to the terminal based on the transport block information, and interpreting the DM-RS antenna port allocation indication information according to the number of transport blocks. | 08-11-2011 |
| 20110235586 | METHOD AND APPARATUS FOR CONTROLLING RETRANSMISSION ON UPLINK IN A WIRELESS COMMUNICATION SYSTEM SUPPORTING MIMO - A method is provided for controlling retransmission by a User Equipment (UE) in a wireless communication system supporting Multiple Input Multiple Output (MIMO) technology. A plurality of transport blocks is initially transmitted to a Node B. A retransmission request for at least one transport block among the plurality of transport blocks is received from the Node B. A precoding matrix for retransmission of the at least one transport block is determined based on the retransmission request for the at least one transport block. The at least one transport block is retransmitted using the determined precoding matrix. | 09-29-2011 |
| 20110235626 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING CONTROL INFORMATION IN MULTI-ANTENNA SYSTEM - A method and apparatus for transmitting control information by an enhanced Node B (eNB) in a wireless communication system supporting Multiple-Input Multiple-Output (MIMO) technology is provided, in which at least one parameter required for initial transmission of User Equipment (UE) is transmitted through a Packet Data Control Channel (PDCCH), at least two codewords are received from the UE and then decoded, one of a plurality of indicators, related to an operation of the UE, is determined based on decoding results of at least two codewords, the determined indicator is transmitted through a Physical Hybrid ARQ indicator channel (PHICH), and at least one codeword is received that the UE generates and transmits based on the parameter required for initial transmission of the UE and the indicator related to the operation of the UE. | 09-29-2011 |
