Abstract:
The present disclosure relates to a communication technique which combines IoT technology with a 5G communication system for supporting a higher data transfer rate than existing 4G systems, and a system thereof. The present disclosure can be applied to an intelligent service (for example, a smart home, a smart building, a smart city, a smart car or a connected car, and services related to health care, digital education, retail business, security and safety, etc.) on the basis of 5G communication technology and IoT-related technology. The present method provides a power headroom information transmission method of a terminal, the headroom information transmission method including: a step of determining whether to transmit second power headroom information, on the basis of information about each beam included in first power headroom information, in a wireless communication system supporting beamforming; and a step of transmitting the second power headroom information to a base station when the transmission of the second power headroom information is determined.
Abstract:
An electronic device and a control method for controlling a memory are provided. An electronic device according to various embodiments of the present disclosure may comprise: a housing; a communication circuit; at least one processor operatively connected to the communication circuit; a non-volatile memory operatively connected to the processor and configured to store at least one file; and a volatile memory operatively connected to the processor, wherein the non-volatile memory stores instructions configured, when executed, to cause the processor to establish a first area and a second area on the volatile memory; store only first type data associated with the at least one file in the first area; store the first type data and/or store at least one second type data that is not associated with the at least one file, in the second area; receive a request for storing one of the at least one second type data, which exceeds a selected threshold value; and when the request is received, cause the first area to be in a state for storing the one of the at least one second type data, instead of the first type data.
Abstract:
A method of operating a wireless communication apparatus is described. The method includes receiving, a repeated physical downlink control channel (PDCCH) from a base station, performing blind decoding on a plurality of candidate PDCCHs, performing a cyclic redundancy check (CRC), comparing the at least two pieces of control information with each other, and determining whether to terminate the blind decoding based on the comparison.
Abstract:
The present disclosure relates to a communication technique for convergence of a 5G communication system for supporting a higher data transmission rate beyond a 4G system with an IoT technology, and a system therefor. The present disclosure may be applied to an intelligent service (for example, smart home, smart building, smart city, smart car or connected car, health care, digital education, retail business, security and safety-related service, etc.) on the basis of a 5G communication technology and an IoT-related technology. The present disclosure relates to a method and device for effectively transmitting or receiving control information for random access in a communication system. According to various embodiments of the present invention, information related to initial random access can be effectively transmitted and received.
Abstract:
A 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) are provided. 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. The method for transmitting and receiving a phase compensation reference signal (PCRS) to compensate for phase noise. The method may determine whether a first precoding is applied to a demodulation reference signal (DMRS) and the PCRS to be transmitted to a terminal. The base station may also generate the DMRS and the PCRS, based on whether the first precoding is applied to the DMRS and the PCRS, and transmit data, the DMRS, and the PCRS to the terminal.
Abstract:
A communication scheme and system for converging a 5th generation (5G) communication system for supporting a data rate higher than that of a 4th generation (4G) system with an internet of things (IoT) technology, and a method and apparatus therefor are provided. The applicable to intelligent services (e.g., smart home, smart building, smart city, smart car, connected car, health care, digital education, retail, and security and safety-related services) based on the 5G communication technology and the IoT-related technology.
Abstract:
A method of a user equipment (UE) for beam management in a wireless communication system is provided. The method comprises receiving, from a base station (BS), a radio resource control (RRC) signaling and a medium access control channel element (MAC CE) signaling including a beam indicator over a downlink channel for the beam management, identifying the beam indicator based on the RRC signaling and the MAC CE signaling, and determining the beam indicator for a physical downlink control channel (PDCCH), a common physical downlink shared channel (PDSCH), and a fallback unicast PDSCH.
Abstract:
The present disclosure relates to a pre-5th-generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-generation (4G) communication system such as long term evolution (LTE). An apparatus and a method for performing beamforming by using an antenna array in a wireless communication system are provided. The apparatus includes at least one antenna array comprising antenna elements, a control unit configured to determine a number of beams to be formed through the at least one antenna array, and a communication unit configured to adjust paths associated with the antenna elements in order to configure as many antenna subsets as the number of the beams, and to form at least one beam through at least one antenna subset configured from the at least one antenna array.
Abstract:
According to one embodiment of the present invention, provided is a method for setting a beam mode of a base station in a wireless communication system, comprising the steps of: selecting the beam mode for at least one terminal, which is serviced by the base station, on the basis of a channel state of a transmission beam or a reception beam of the base station; transmitting, to the terminal, a control message including selected beam mode information; and performing data communication with the terminal by using the transmission beam and the reception beam corresponding to the selected mode. In addition, according to one embodiment of the present invention, provided is a communication method of the terminal in the wireless communication system, comprising the steps of: receiving a beam mode setting message from the base station; setting either a beam fixation mode or a beam sweeping mode on the basis of the received beam mode setting message; and performing data communication with the base station on the basis of the set mode.