Abstract:
A 5th Generation (5G) or pre-5G communication system for supporting higher data transmission rates beyond 4th Generation (4G) communication systems such as long term evolution (LTE) systems. A method for transmitting download control information in a communication system is provided. The method includes configuring the control information indicating at least one control channel element (CCE) including at least one resource element group (REG) unit interleaved based on the interleaving information indicated by a higher layer signaling; and transmitting, to a user equipment (UE), the configured control information.
Abstract:
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). Next generation of wireless cellular operation is expected to be deployed in higher frequency above 6 GHz (eg. 10 GHz˜100 GHz, also called mmWave and/or cmWave) due to availability of large amount of spectrum bandwidths. The physical layer of wireless cellular system in both DL and UL operating in mmWave/cmWave would be based on new air-interface different from that of LTE-A air-interface because the radio characteristics is different for mmWave/cmWave bands. The initial deployment of mmWave/cmWave system is expected to operate as non-standalone system to provide additional radio resources to the UE which would be connected to the LTE-A cell for coverage purpose. The present disclosure covers initial access aspects of a UE on such future wireless system.
Abstract:
The present invention relates to a 5G or pre-5G communication system for supporting a higher data transmission rate beyond a 4G communication system such as LTE and, more particularly, to a method and a device for controlling transmission power, the method being performed in a base station of a wireless communication system using multiple antennas. The method for controlling transmission power comprises the step of: transmitting a reference signal at a plurality of vertical angles that differ from each other by means of an antenna arrangement; receiving channel state information, which is related to beamforming of a transmission signal, from a terminal which has received the reference signal and measured a channel state; and transmitting the transmission signal to the terminal by means of transmission power which corresponds to the channel state information.
Abstract:
A method for allocating resources in a mobile communication system is provided. The resource allocation method includes determining whether a transmission time of response information indicating presence/absence of an error in received data overlaps a transmission time of channel state information; and when the transmission times overlap each other, allocating, to the response information, a resource block for the channel state information, cyclic shift values in a frequency domain, and orthogonal sequences having orthogonality in a time domain.
Abstract:
Methods and apparatuses for transmitting and receiving signaling, by a User Equipment (UE) with reduced processing capabilities, to conserve power are provided. A method for transmitting from a network a Physical Downlink Shared CHannel (PDSCH) to a first User Equipment (UE) from a first class of UEs or to a second UE from a second class of UEs, includes transmitting a PDSCH to the first UE using a first bandwidth unit; and transmitting a PDSCH to the second UE using a second bandwidth unit, wherein the second bandwidth unit is smaller than the first bandwidth unit.
Abstract:
A method and an apparatus for reporting channel status in a cellular radio communication system are disclosed. In a communication system supporting a carrier aggregation of a component carrier to which an FDD scheme is applied and a component carrier to which a TDD scheme is applied, a base station identifies a TDD uplink-downlink configuration of a TDD primary cell, and configures a CSI transmission period of an FDD secondary cell according to the TDD uplink-downlink configuration. A terminal transmits a CSI of the FDD secondary cell in a specific sub-frame of the TDD primary cell according to a CSI configuration period indicated by the base station.
Abstract:
Disclosed are a device and a method for transmitting control information in a base station the supports a high-speed data service for a primary cell (PCell) area and a secondary cell (SCell) area. To this end, control information is generated according to a format which is determined by considering a primary duplex mode supported in the PCell area and a secondary duplex mode supported in the SCell area. The generated control information is transmitted to a downlink control channel. The primary duplex mode and the secondary duplex mode correspond to either a frequency division duplex (FDD) mode or a time division duplex (TDD) mode so as to be different from each other.
Abstract:
A method for reporting channel state information by a terminal in a multiple access based communication system is provided. The method includes determining a most favored direction with a highest signal quality with respect to a reference signal received from a base station and determining, as a reported object, some channel directions including the most favored direction among channel directions formed together with the base station, identifying a channel quality information group including channel quality information corresponding to the some channel directions among channel quality information groups classified according to a distance measured with respect to the most favored direction, and transmitting the identified channel quality information group to the base station.
Abstract:
An apparatus and method for transmitting Uplink Control Information (UCI) over a Physical Uplink Control CHannel (PUCCH) in a communication system. A method includes acquiring, by a user equipment (UE), from an evolved Node B (eNB), at least one physical resource block (PRB) information; generating, by the UE, UCI to be transmitted, the UCI being arranged in an order of an index of multiple cells; encoding, by the UE, the UCI; performing, by the UE, a Fourier transform (FT) operation on the encoded UCI; performing, by the UE, an inverse Fourier transform (IFT) operation on the Fourier transformed UCI; and transmitting, by the UE, the inverse Fourier transformed UCI based on a PUCCH format associated with the multiple cells and the at least one PRB information.
Abstract:
An apparatus and method for transmitting Uplink Control Information (UCI) over a Physical Uplink Control CHannel (PUCCH) in a communication system. A method includes acquiring, by a user equipment (UE), from an evolved Node B (eNB), at least one physical resource block (PRB) information; generating, by the UE, UCI to be transmitted; encoding, by the UE, the UCI; performing, by the UE, a Fourier transform (FT) operation on the encoded UCI; performing, by the UE, an inverse Fourier transform (IFT) operation on the Fourier transformed UCI; and transmitting, by the UE, the inverse Fourier transformed UCI based on a PUCCH format associated with multiple cells and the at least one PRB information.