Abstract:
A discovery signal transmission/reception method and an apparatus for improving energy efficiency of the system are provided. The discovery signal transmission method of a base station in a mobile communication system according to the present disclosure includes acquiring a discovery signal configuration of a neighbor cell, transmitting the discovery signal configuration to a terminal, receiving a measurement report including a result of measurement on a discovery signal of the neighbor from the terminal, the measurement being performed based on the discovery signal configuration, and determining whether to make a handover decision for the terminal based on the measurement report. The discovery signal transmission/reception method of the present disclosure is advantageous in improving energy efficiency of a mobile communication system.
Abstract:
The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method for decoding by a terminal in a mobile communication system is provided. The method includes receiving data from a base station, receiving setting information on whether a second channel code which is an outer code for a first channel code is set from the base station, determining whether to decode the data by using the second channel code depending on the setting information, and performing the decoding based on a result of the determined.
Abstract:
A method and an apparatus for transmitting/receiving channel state information for use in multi-antenna system are provided. A signal communication method of a base station having a plurality of antennas in a wireless communication system includes determining antenna ports of first and second directions based on directions of the plurality of antennas, allocating channel measurement resources for the respective antenna ports to a terminal, transmitting a feedback configuration to the terminal according to the channel measurement resources, and receiving feedback information from the terminal based on the channel measurement resource and the feedback configuration. The signal transmission/reception method and apparatus are advantageous in transmitting/receiving channel state information efficiently in the system using a plurality of antennas.
Abstract:
A control channel transmission/reception method and apparatus are provided. The control channel transmission method of a base station includes acquiring a criterion for sorting control channels, sorting the controls channels into at least two control channel sets based on the criterion, configuring the control channels by allocating at least one antenna port to each control channel set, and transmitting the control channels as configured.
Abstract:
The present invention relates to a method and an apparatus for transmitting interference related control information in order to improve reception performance of a UE which receives a downlink signal, in a cellular mobile communication system based on an Long Term Evolution-Advanced (LTE-A) system. A communication method of a UE according to an embodiment of the present invention includes receiving information on a resource allocation unit of an interference signal from an eNB; performing blind detection using information on the resource allocation unit of the interference signal; performing error-correcting coding using a transmission parameter for interference and a result obtained by the blind detection; and decoding reception data. According to an embodiment of the present invention, a reception performance of the UE can be improved through interference cancellation and suppression.
Abstract:
A method for transmitting control information by a base station in a wireless communication system is provided. The method includes determining a precoder to be applied to a resource and a Demodulation Reference Signal (DMRS) port, the resource being used to transmit the control information, and the DMRS port corresponding to the resource and being used to transmit a DMRS, precoding the resource and the DMRS port by using the determined precoder, and transmitting the control information and the DMRS to a user equipment.
Abstract:
A control channel transmission/reception method and an apparatus for transmitting/receiving control channels using a resource allocation scheme applicable regardless of reference signal transmission or whether the reference signal is transmitted in distributed transmission mode or localized transmission mode are provided. The control channel transmission method includes mapping a Demodulation Reference Signal (DMRS) to Resource Elements (REs) of a Resource Block (RB) for transmitting a control channel, mapping the control channel to the REs numbered with numbers of predetermined number of Resource Element Groups (REGs) in a frequency-first ascending order cyclically, with the exception of the REs to which the DMRS is mapped, and transmitting the DMRS and the control channel.
Abstract:
A method and an apparatus are provided for a data transmission/reception in a terminal in a CoMP system is provided. One or more valid subframes are determined for updating feedback information. The feedback information is updated at each of the valid subframes. A feedback information scheduling signal is received at a predetermined subframe. Feedback information updated at a most recent valid subframe, from among previous subframes, is transmitted according to the feedback information scheduling signal.
Abstract:
A Channel State Information (CSI) transmission/reception method and an apparatus for transmitting/receiving CSI efficiently in a Coordinated Multi-Point (CoMP) communication system are provided. The CSI transmission method of a terminal for receiving Joint Transmission (JT) from a first Transmission Point (TP) and a second TP includes receiving a first CSI Reference Signal (CSI-RS) corresponding to the first TP, receiving a second CSI-RS corresponding to the second TP, generating an aggregated CSI corresponding to the first and second CSI-RSs, and transmitting the aggregated CSI, wherein generating an aggregated CSI comprising creating the aggregated CSI with a transmission timing of the aggregated CSI. The CSI transmission/reception method and apparatus is capable of transmission CSI efficiently in the CoMP system.
Abstract:
A Channel State Information (CSI) feedback method and apparatus is provided for transmitting, at a base station, the CSIs for plural transmit antennas with a limited amount resource and receiving, at a mobile station, the CSIs efficiently in a massive Multiple Input Multiple Output (MIMO) system operating in the Frequency Division Duplex (FDD) mode.