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. A method and apparatus for handling sidelink communication according to type of handover are provided.

Abstract: A method is provided. The method is performed by a user equipment (UE), of performing sidelink communication, and includes obtaining a valid system information block (SIB) for sidelink communication, autonomously determining a sidelink resource based on information of a pool of sidelink resources included in the valid SIB for sidelink communication, and performing sidelink communication with another UE using the determined sidelink resource.

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. Embodiments herein disclose a method for grouping of paging for multiple UEs in a paging occasion in a wireless network (1000) by an AMF entity (300). The method includes determining paging sub-group information to be allocated to a UE (100) based on characteristics of the UE (100). Further, the method includes allocating the paging sub-group information to the UE (100) for paging.

Abstract: The present disclosure relates to a 5G communication system or a 6G communication system for supporting higher data rates beyond a 4G communication system such as long term evolution (LTE). The present disclosure provides method and apparatus for RLM and BFD measurements in next generation wireless communication system.

Abstract: A method for performing a random access is provided. The method includes identifying a first downlink (DL) reception (RX) beam based on a measurement on a beam measurement signal, identifying a first uplink (UL) transmission (TX) beam corresponding to the identified first DL RX beam and transmitting at least one random access preamble for an RX sweeping at a base station, using the identified first UL TX beam based on a first power.

Abstract: A method, performed by a user equipment (UE), in a wireless communication system includes: obtaining sidelink logical channel configuration information corresponding to a logical channel and including a sidelink logical channel priority (sl-priority) parameter; selecting a destination associated with one of unicast, groupcast, and broadcast, based on the sidelink logical channel configuration information and sl-priority configured for each of at least one logical channel including sidelink data available for transmission; allocating sidelink resources to at least one logical channel corresponding to the destination based on the sl-priority configured for each of the at least one logical channel corresponding to the destination; multiplexing sidelink data included in the at least one logical channel corresponding to the destination to a medium access control (MAC) protocol data unit (PDU); and transmitting the MAC PDU to another UE using the sidelink resources.

Abstract: The present disclosure relates to a communication technique for converging an IoT technology with a 5G communication system to support a higher data transmission rate beyond a 4G system, and a system therefor. The present disclosure can be applied to intelligent services (e.g., a smart home, a smart building, a smart city, a smart or connected car, health care, digital education, retail business, and services associated with security and safety, or the like) on the basis of 5G communication technology and an IoT-related technology. The present invention provides a method for determining a radio link failure. The method comprises the steps of: identifying an indication of in synchronization (IS) or out of synchronization (OOS) with respect to a plurality of reception beams; starting a timer to determine a radio link failure when the indication of OOS is identified; and holding the timer when at least one of the plurality of reception beams is requested to be changed.

Abstract: The disclosure relates to a 5th Generation (5G) or 6th Generation (6G) communication system for supporting a higher data transmission rate. A device and a method are provided. The method includes identifying a start of a congestion state based on insufficiency in resources for uplink data or a burst state related to an increase of uplink data, identifying, based on the identification of the start of the congestion state or the burst state, whether to perform a discard operation with respect to a protocol data unit (PDU) of unlink data or a PDU set including at least one PDU, performing, based on the identification, the discard operation with respect to the PDU or the PDU set based on a priority configured based on importance of the PDU or the PDU set, and stopping the performance of the discard operation, based on an end of the congestion state or the burst state.

Abstract: The disclosure relates to a 5G or 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 transmitting, to a base station, a message A of a 2-step random access based on a configured grant small data transmission (CG-SDT) procedure, wherein the message A includes a cell radio network temporary identifier (C-RNTI) medium access control (MAC) control element (CE), and receiving, from the base station, a physical downlink control channel (PDCCH) addressed to the C-RNTI, wherein a random access response reception of the 2-step random access is completed, in case that the CG-SDT procedure is ongoing, a CG-SDT time alignment timer for the CG-SDT procedure is running and the PDCCH includes an uplink grant.

Abstract: Methods and apparatuses for a timing advance report an NTN is provided. The method of UE comprises: receiving, from a BS, first information including satellite assistance information for a target satellite; receiving, from the BS, second information including timing information, wherein the timing information includes at least one of a start time and a time duration for a synchronization operation; determining whether a RACH-less synchronization operation is configured; and initiating, based on the satellite assistance information and the timing information, the synchronization operation by performing a RA procedure upon a determination that the RACH-less synchronization operation is not configured.

Abstract: The disclosure provides a method for sidelink channel state information (CSI) reporting in a wireless communication system. The method comprises steps in which: a user equipment (UE) obtains parameters associated with discontinuous reception (DRX); the UE transmits, to a peer UE, a CSI request; and the UE monitors a sidelink channel in an active time of the DRX for receiving, from the peer UE, sidelink CSI in response to the CSI request, wherein the active time of the DRX includes a time duration between transmitting the CSI request and receiving the sidelink CSI.

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 by a terminal configured with at least one serving cell for performing a random access (RA) procedure is provided. The method includes measuring downlink reference signal received power (DL RSRP) of a serving cell on which the RA procedure is initiated, determining whether the DL RSRP of the serving cell is greater than a threshold, and performing a two-step RA procedure based on the DL RSRP of the serving cell being greater than the threshold.

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 addition, a method of a terminal in a radio communication system according to the disclosure includes: performing, by a packet data convergence protocol (PDCP) entity of the terminal, deciphering and integrity verification of first data; if the integrity verification of the first data fails, indicating a failure of the integrity verification to an upper layer; and discarding the first data and considering that the first data has not been received.

Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method performed by a user equipment (UE) in a wireless communication system includes receiving, from a base station, configuration information related to a network energy saving (NES) mode, receiving, from the base station, a message indicating a performing the NES mode after a random access (RA) is triggered, and identifying whether at least one resource related to the RA and the NES mode overlap based on the configuration information.

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). In accordance with an aspect of the present disclosure, a method of transmitting data in a device to device communication system is provided. The method includes determining whether a security feature is applied to one or more packet data convergence protocol (PDCP) data units, configuring the one or more PDCP data units based on the determined result, and transmitting the one or more PDCP data units to one or more receiving user equipments (UEs).

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. Accordingly the embodiments herein provides a method for handling a RAR in a wireless communication system (300).

Abstract: A method of relaxing frequency measurement by a terminal in a wireless communication system is provided. The method includes receiving, from a base station, system information comprising first configuration information associated with frequency measurement and second configuration information associated with relaxed frequency measurement, the second configuration information comprising at least one of first information associated with a criterion for the terminal with low mobility (low mobility criterion) or second information associated with a criterion for the terminal not at cell edge (not at cell edge criterion), identifying whether at least one of the low mobility criterion or the not at cell edge criterion is fulfilled, and determining whether to perform frequency measurement based on the identifying.

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 method performed by a terminal in a wireless communication system is provided.

Abstract: A method, performed by a terminal, in a wireless communication system is provided. The method includes receiving, from a source base station, a radio resource control (RRC) reconfiguration message including data radio bearer (DRB) configuration information, wherein the DRB configuration information includes an identifier of a DRB and an indicator for a dual active protocol stack (DAPS) handover, and in case that the DRB configuration information includes service data adaptation protocol (SDAP) configuration information, and completion of a random access to a target base station is indicated by a target medium access control (MAC) entity for the target base station, reconfiguring a SDAP entity based on the SDAP configuration information.

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.