Abstract:
An apparatus and a method of measuring a reference signal for efficient downlink transmission in a mobile communication system are provided. The system includes plural base stations, each having a plurality of antennas distributed in the service area thereof based on a Distributed Antenna System (DAS). A method for a base station to notify a terminal of reference signal measurement information in a mobile communication system comprises determining whether the terminal is in a Rank Indicator/Precoding Matrix Indicator (RI/PMI) disabled mode, selecting, when the terminal is in the RI/PMI disabled mode, the reference signal to be measured by the terminal between a Cell-specific Reference Signal (CRS) and a Channel Status Information Reference Signal (CSI-RS), notifying the terminal of the reference signal measurement information with the selection result, and receiving channel information generated based on the reference signal measurement information from the terminal.
Abstract:
A method and apparatus are provided for transmitting uplink signals including feedback for use in scheduling at different evolved Node Bs (eNBs) without intermodulation interference, especially in cases where the User Equipment (UE) is connected to an inter-duplex inter-eNB system in which the cooperation between eNBs is very slow or non-existent.
Abstract:
A method and apparatus for providing a data service by using a broadcasting signal are provided. To transmit the broadcasting signal by an Access Point (AP) located within a coverage area of a base station (eNB), the AP transmits configuration information, used for transmission of the broadcasting signal on the same frequency band as that of the eNB, to the eNB, receives broadcasting signal transmission information, based on the configuration information, from the eNB, and transmits the broadcasting signal according to the broadcasting signal transmission information.
Abstract:
Methods and apparatus are provided for controlling transition of an operation state of a cell in a wireless communication system. The cell includes a transceiver configured to transmit and receive signals to and from a terminal and another cell. The cell also includes a controller configured to transition an operation state of the cell from an active state to a dormant state, transmit a discovery signal, determine whether a cell activation signal is received from a node that controls the cell, and transition the operation state of the cell from the dormant state to the active state when the cell activation signal is received.
Abstract:
A feedback method and apparatus is provided for facilitating feedback in a Cooperative Multi-Point (CoMP) system in which multiple base stations cooperate with each other for downlink transmission to a terminal. The feedback method of a terminal includes determining whether the terminal is operating in cooperative multi-point mode for receiving data from a plurality of cells; estimating, when the terminal is operating in cooperative multi-point mode, channels of the cells belonging to a measurement set based on channel status information reference signals for the cells; selecting at least one best cell based on a signal-to-interference plus noise ratio based on the estimated channels; and feeding back a cell index and channel information of the best cell.
Abstract:
A method for transmitting a physical channel in a Time Division Duplex (TDD) communication system capable of carrier aggregation is provided for supporting aggregation of carriers having different TDD configurations. The communication method of a terminal in a TDD radio communication system accomplishing broadband through carrier aggregation of primary and secondary cells, of which aggregated carriers have different TDD Uplink-Downlink (UL-DL) configurations, includes receiving Physical Downlink Shared Channel (PDSCH) through the secondary cell, and transmitting acknowledgement information corresponding to the PDSCH to a base station, where acknowledgement information is transmitted on a Physical Uplink Control CHannel (PUCCH) of the primary cell.
Abstract:
A method for transmitting interference related control information in order to improve a reception performance of a terminal that receives a downlink in a cellular mobile communication system based on the LTE-A system includes receiving a higher layer control message including probability information of a modulation scheme for an interference signal, from a base station, and performing error-correcting coding using a probability value of a modulation scheme for an interference signal, which is included in the higher layer control message. A base station in a mobile communication system, the base station includes a controller configured to generate probability information of a modulation scheme for an interference signal, and transmit, to the terminal, a higher layer control message comprising the probability information of the modulation scheme for the interference signal.
Abstract:
An apparatus and a method of measuring a reference signal for efficient downlink transmission in a mobile communication system are provided. The system includes plural base stations, each having a plurality of antennas distributed in the service area thereof based on a Distributed Antenna System (DAS). A method for a base station to notify a terminal of reference signal measurement information in a mobile communication system comprises determining whether the terminal is in a Rank Indicator/Precoding Matrix Indicator (RI/PMI) disabled mode, selecting, when the terminal is in the RI/PMI disabled mode, the reference signal to be measured by the terminal between a Cell-specific Reference Signal (CRS) and a Channel Status Information Reference Signal (CSI-RS), notifying the terminal of the reference signal measurement information with the selection result, and receiving channel information generated based on the reference signal measurement information from the terminal.
Abstract translation:提供了一种在移动通信系统中测量用于有效下行链路传输的参考信号的装置和方法。 该系统包括多个基站,每个基站具有基于分布式天线系统(DAS)分布在其服务区域中的多个天线。 一种用于基站在移动通信系统中通知终端参考信号测量信息的方法,包括:确定终端是否处于秩指示/预编码矩阵指示符(RI / PMI)禁用模式,当终端处于 RI / PMI禁用模式,由小区特定参考信号(CRS)和信道状态信息参考信号(CSI-RS)之间的终端要测量的参考信号,通过选择通知终端参考信号测量信息 结果以及基于来自终端的参考信号测量信息生成的信道信息。
Abstract:
A method and apparatus are provided for signal transmission and reception in a Time Division Duplex (TDD) system. The method includes receiving, from a base station, first configuration information including an uplink reference Uplink-Downlink (UL-DL) configuration; receiving, from the base station, second configuration information including a downlink reference UL-DL configuration; receiving, from the base station, third configuration information including an equivalent UL-DL configuration based on the first configuration information and the second configuration information; and communicating signals with the base station based on the third configuration information.
Abstract:
The disclosure relates to a fifth generation (5G) or sixth generation (6G) communication system for supporting a higher data transmission rate. A method for improving the coverage of an uplink channel for uplink transmission is provided. The method includes receiving, from a base station, configuration information including resource allocation information for transport block (TB) processing over multiple slots (TBoMS), repetitive transmission configuration information, and frequency hopping information, identifying whether repetitive transmission of the TBoMS is configured, based on the configuration information, determining a frequency hopping pattern between TBoMS repetitive transmissions based on the frequency hopping information and a number of slots for frequency hopping in case that the repetitive transmission of the TBoMS is configured, and performing the repetitive transmission of the TBoMS based on the frequency hopping pattern.