Abstract: A communication method and system for converging a fifth generation (5G) communication system for supporting higher data rates beyond a fourth generation (4G) system with a technology for Internet of things (IoT) are provided. The communication method and system 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 performing a random access procedure in a wireless communication system is provided.

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. In accordance with an aspect of the present disclosure, a method and an apparatus for preventing loss of data existing in Msg3 buffer and a method and an apparatus for determining a paging frame and/or a paging occasion are provided.

Abstract: The disclosure relates to a 5th generation (5G) or 6th generation (6G) communication system for supporting a higher data transmission rate. A method performed by a terminal in a wireless communication system is provided. The method includes receiving, from a base station, configuration information associated with a set of a plurality of downlink resources, the set being configured to occur periodically, monitoring the plurality of downlink resources of the set in a period for receiving downlink data, wherein the plurality of downlink resources are monitored sequentially, and in case that the downlink data is received in a downlink resource of the set in the period, skipping monitoring of the remaining one or more downlink resources of the set in the period.

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.

Abstract: 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. The present disclosure provides a method and an apparatus for performing a random access by a terminal in a wireless communication system by starting a backoff timer for a random access preamble retransmission, determining whether a criterion to select a contention free random access resource is met during the backoff timer, selecting a random access resource for a transmission of a random access preamble when the criterion is met during the backoff timer, and transmitting, to a base station, the random access preamble in the selected random access resource.

Abstract: The present disclosure relates to a communication technique for converging, with an IoT technology, a 5G communication system for supporting a higher data transmission rate than a 4G system, and a system therefor. The present disclosure relates to a method performed by a terminal which receives a multicast and broadcast service (MBS) in a wireless communication system, and the method may comprise the steps of: receiving, from a base station, downlink control information (DCI) based on a specific radio network temporary identifier (RNTI) related to the MBS; and starting a bandwidth part (BWP) deactivation timer in response to reception of the DCI, wherein the specific RNTI includes a group-RNTI (G-RNTI).

Abstract: A method and apparatus for cell barring in a wireless communication system are provided. The method includes determining whether system information block type 1 (SIB1) is acquired from a cell, considering the cell as barred, if the acquiring the SIB1 fails, determining whether the cell is a licensed cell or an unlicensed cell and excluding the cell and other cells on a same frequency with the cell as a candidate for cell selection or reselection for a pre-defined period, if the cell is a licensed cell and cell selection or reselection to intra-frequency cells is not allowed.

Abstract: The 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 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. An apparatus, a method and a system for system information acquisition, beam failure recovery, and cell reselection in wireless communication system are provided.

Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate, i.e., a connected mode DRX enhancement, and handling a timer for an SDT procedure in a wireless communication system.

Abstract: A method performed by a terminal in a wireless communication system. The method includes receiving, from a base station, a first message associated with triggering a transmission of a second message, identifying whether the transmission of the second message associated with network energy saving is triggered based on the first message, transmitting, to the base station, the second message associated with network energy saving, in case that the transmission of the second message is triggered, and receiving, from the base station, a third message associated with a network energy status of the base station configured based on the second message.

Abstract: The 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 disclosure may be applied to intelligent services (e.g., smart homes, smart buildings, smart cities, smart cars or connected cars, health care, digital education, retail business, security and safety-related services, etc.) based on 5G communication technology and IoT-related technology. The disclosure relates to a method and apparatus for detecting an uplink listen-before-talk (LBT) failure when using a 3GPP 5G new radio (NR) technology in a wireless communication system.

Abstract: The disclosure relates to a fifth generation (5G) or sixth generation (6G) communication system for supporting a higher data transmission rate. More specifically, the disclosure relates to a method performed by a user equipment (UE) in a wireless communication system, including receiving, from a base station, a radio resource control (RRC) release message including first information for a small data transmission (SDT) configuration, transmitting, to the base station, small data based on the first information, and transmitting, to the base station, a random access (RA) report including SDT information.

Abstract: A communication method and system for converging a fifth generation (5G) communication system for supporting higher data rates beyond a fourth generation (4G) system with a technology for internet of things (IoT) are provided. The communication method and system 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 of a terminal for performing a random access procedure is provided.

Abstract: A communication method and system for converging a fifth generation (5G) communication system for supporting higher data rates beyond a fourth generation (4G) system with a technology for Internet of things (IoT) are provided. The communication method and system 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 of a terminal receiving a paging message is provided. In addition, a method of a terminal acquiring system information is provided.

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. The present disclosure provides method and apparatus of determining preamble and RACH occasions for 2-step random access.

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 performed by a terminal in a communication system is provided.

Abstract: 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) are provided. The communication method and system includes 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, a terminal, and a base station for handling non small data transmission (SDT) radio bearer (RB) during SDT in a wireless communication system are provided.

Abstract: The disclosure relates to a communication method 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. The disclosure is applicable to intelligent services (e.g., smart home, smart building, smart city, smart car or connected car, health care, digital education, retail, and security and safety-related services) based on the 5G communication technology and the IoT-related technology. The disclosure relates to a method and apparatus for transmitting or receiving a frequency-division-multiplexed paging message in a next generation mobile communication system.

Abstract: A method performed by a user equipment (UE) in a wireless communication system is provided. The method includes identifying that one or more cells are configured; receiving, on a serving cell among the one or more cells, downlink control information (DCI) including information that indicates skipping PDCCH monitoring; and skipping the PDCCH monitoring for a duration on the serving cell based on the DCI.

Abstract: The present disclosure relates to: a communication technique for merging IoT technology with a 5G communication system for supporting a data transmission rate higher than that of a 4G system; and a system therefor. The present disclosure relates to a method performed by a terminal in a wireless communication system, and may comprise the steps of: receiving a deactivation command regarding a secondary cell group (SCG) from a first base station related to a master cell group (MCG); performing measurement on at least one beam related to the SCG, in a deactivated state regarding the SCG; and performing a random access with a second base station related to the SCG, on the basis of a random access preamble related to a downlink beam, when beam failure is detected on the basis of the measurement.