Abstract: A method of a terminal in a wireless communication system is provided. The method includes receiving, from a base station, a message including first information configuring a medium access control (MAC) parameter for the terminal; identifying whether second information is configured in the first information, the second information indicating the terminal to skip an uplink transmission; receiving, from the base station, an uplink grant; and determining whether to skip a generation of a MAC protocol data unit (PDU) for the uplink grant based on the second information. The generation of the MAC PDU is skipped, in case that the uplink grant is addressed to a cell radio network temporary identifier (C-RNTI).

Abstract: The present invention relates to a method and apparatus in which a terminal performs contention-based access in a mobile communication system, wherein the method comprises: a sensing step of sensing whether or not contention-based access is allowed for at least one logical channel; a receiving step of receiving a contention-based reverse grant from a base station; and a transmitting step of transmitting data to the base station through the logical channel for which the contention-based access is allowed. According to the present invention, contention-based access can be efficiently performed, and the reliability of transmission can be ensured.

Abstract: Methods and apparatuses are provided for transmitting a status report by a receiving device including an automatic repeat request (ARQ) entity and a hybrid ARQ (HARQ) processor, in a mobile communication system. The method includes transmitting, by the HARQ processor, a packet provided from the ARQ entity to a receiving device; receiving, by the HARQ processor, a packet including a status report including a reception status of the transmitted packet from the receiving device; and providing, by the HARQ processor, the status report to the ARQ entity. The status report is generated, by an ARQ entity of the receiving device at a transmission opportunity indicated by a HARQ processor of the receiving device, in response to the status report being triggered based on at least one triggering condition by the ARQ entity of the receiving device.

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). The present disclosure provides apparatus and method for controlling data flow in wireless communication system. According to various embodiments of the present disclosure, a method of managing a data flow in a wireless communication system comprises controlling a quality of service (QoS) flow to be transferred from a first data radio bearer (DRB) to a second DRB. Herein, the QoS flow is a flow of data carried by a DRB between a terminal and at least one network entity.

Abstract: A method for operating a terminal in a wireless communication system is provided. The method includes decoding data which is received data or combined data, in case that the data is successfully decoded, determining whether the decoding of the data is a first successful decoding, and, in case that the decoding of the data is the first successful decoding, delivering the decoded data to a disassembly and demultiplexing entity.

Abstract: A method for transmitting packet data units Packet Data Units (PDUs) at a PDU transmitter in a communication system is provided. The method includes transmitting a first PDU comprising a PDU header and a data portion, receiving Negative Acknowledgement NACK information for the first PDU, segmenting the first PDU to form one or more PDU segments if a size of a second PDU for retransmission is smaller than a size of the first PDU, wherein each of the one or more PDU segment comprises a PDU segment header and a data portion, and transmitting the one or more PDU segment to a PDU receiver.

Abstract: A method and apparatus for initiating communications on a shared channel in a mobile communication system are provided. A user equipment transmits an uplink signal for requesting communications on the shared channel to a Node B, and waits for a delay duration without monitoring a downlink after transmitting the uplink signal. When the delay duration has elapsed, the user equipment monitors the downlink during a valid period and determines whether a downlink signal responding to the uplink signal is received in a transmission time interval within the valid period. When the downlink signal is received in the valid period, the user equipment transmits and receives data on the shared channel.

Abstract: Disclose are: a communication technique for merging, with IoT technology, a 5G communication system for supporting a data transmission rate higher than that of a 4G system; and a system therefor. The present disclosure can be applied to an intelligent service (for example, smart home, smart building, smart city, smart car or connected car, health care, digital education, retail, security and safety-related services, and the like) on the basis of a 5G communication technology and an IoT-related technology. One embodiment of the present invention relates to a method and a device for accelerating data processing of a double connection in a next generation mobile communication system.

Abstract: A user equipment (2) has an ability to operate according to one or more spectrum emission requirement capability values (14) in a wireless communications network having at least a first serving cell (4). A message (6) is received at the user equipment (2) from the first serving cell (4) comprising a first indicator representing a first band designation (8), a second indicator representing a spectrum emission requirement value (10), and at least one additional indicator representing at least one additional spectrum emission requirement value (12), both the first and additional indicators relating to the first band designation. The user equipment (2) performs a comparison of the first and additional spectrum emission requirement values (10, 12) with the one or more spectrum emission requirement capability values (14) and determines a behaviour of the user equipment (2) in relation to the first serving cell (4) in dependence on the comparison.

Abstract: Disclosed in a method of discontinuous data reception in a mobile communication system. The method includes: receiving downlink data and decoding the received downlink data by the UE; when the decoding is not successful, starting a timer for receiving retransmitted data; when the downlink data has been received by a configured downlink assignment, operating a downlink carrier, through which the downlink data has been received, in an active time; and when the downlink data has been received by a dynamic transmission resource and the downlink carrier, through which the downlink data has been received, is different from a downlink carrier, through which a scheduling command for the downlink data has been received, operating the downlink carrier, through which the scheduling command for the downlink data has been received, and the downlink carrier, through which the downlink data has been received, in an active time.

Abstract: The present disclosure provides a method for cell reselection in a wireless communication system in which various radio access technologies (RATs) coexist with each other. In a wireless communication system in which heterogeneous networks coexist with each other, the method of cell reselection between heterogeneous networks for a user equipment may include: receiving a system information block (SIB) containing cell reselection parameters from a corresponding base station; checking whether cell reselection parameters based on a cell selection quality value (Squal) are configured in the received SIB; and performing, when cell reselection parameter based on Squal are not configured, cell reselection based on a cell selection receive level value (Srxlev). The present disclosure may prevent the user equipment from performing unnecessary cell reselection.

Abstract: A method for transmitting a channel state by a terminal in a communication system, according to one embodiment, comprises the steps of: receiving discontinuous reception (DRX) configuration information from a base station; determining whether the terminal is set to transmit channel state information only in onDuration according to a DRX operation; determining whether an arbitrary subframe to be received is a subframe included in onDuration if the terminal is set to transmit the channel state information only in onDuration according to the configuration; and not transmitting the channel state information on the arbitrary subframe if the arbitrary subframe is not a subframe included in onDuration. According to the embodiment, the terminal can efficiently report channel state information.

Abstract: Provided are a communication method and system enabling convergence of 5G communication and IoT technology to achieve higher data rates for beyond 4G communication systems. In addition, provided is a method for transmitting a power headroom report (PHR) by a user equipment (UE) in a mobile communication system. The method includes: receiving a first PHR configuration information for a first base station (first ENB); receiving a second PHR configuration information for a second ENB; generating, when the UE has dual connectivity to the first ENB and the second ENB, a dual connectivity PHR containing PHR information for the first ENB and second ENB based on a dual connectivity PHR format; and sending the dual connectivity PHR. There is also provided a user equipment supporting the above method. There is further provided a base station and operation method therefor that enable the user equipment to have dual connectivity.

Abstract: A method of processing state information in a radio access network (100). The radio access network (100) includes a first radio access node (103, 104) that is associated with a cell (105, 106) and user equipment (102). The method comprises maintaining state information at the user equipment (102), the state information comprising at least one state information part associable with different values. The method further comprises transmitting a current value associated with at least one state information part from the user equipment (102) to the first radio access node (103, 104) in response to detecting at least one predetermined trigger indicating that the first radio access node (103, 104) may not hold the current value. The method further comprises relying on the first radio access node (103, 104) holding the current value associated with the at least one state information part if no predetermined trigger is detected.

Abstract: Methods and apparatuses are provided for transmitting a status report by a receiving device including an automatic repeat request (ARQ) entity and a hybrid ARQ (HARQ) processor, in a mobile communication system. The method includes receiving, by the ARQ entity, a packet from a transmitting device through the HARQ processor; determining, by the ARQ entity, whether a status report is triggered based on at least one triggering condition; generating, by the ARQ entity, the status report including a reception status of the received packet at a transmission opportunity indicated by the HARQ processor, in response to the status report being triggered; and transmitting, by the HARQ processor, to the transmitting device, a packet including the status report.

Abstract: A method of operating a target base station in a wireless communication network to determine an addressing information for a source base station. A method to operate a target base station in a wireless communication network includes receiving a connection request message from a terminal, transmitting, to the terminal, a terminal information request message, and receiving, from the terminal, a terminal information response message including source base station information in response to the terminal information request message.

Abstract: A method of a User Equipment, UE, in a 3rd Generation Partnership Project, 3GPP, compliant mobile communications network supporting dual connectivity, and a corresponding UE. The method comprises detecting a signalled reconfiguration procedure of a Data Radio Bearer, DRB, having or changing to a DRB type in which downlink, DL, data is received from only serving cells of a Secondary Cell Group, SCG, connected to a Secondary eNB, SeNB, via an SCG DRB, or in which DL data is received from a SCG and also from serving cells of a Master Cell Group, MCG, connected to a Master eNB, MeNB, via a split DRB.

Abstract: A method and apparatus are provided for controlling an active state in a mobile communication system. The method includes receiving, from a base station, information related to a starting position of an active state and information related to a length of a first timer; deriving the starting position of the active state based on the information related to the starting position; starting the first timer set to the length of the first timer and entering the active state at the derived starting position; terminating the active state if control data indicating a transmission of user data is not received until the first timer expires; extending a period of the active state if the control data is received before the first timer expires; and terminating the active state based on a control signal indicating a termination of the active state.

Abstract: The present invention relates to a method and apparatus for transmitting data using a multi-carrier in a mobile communication system. The method of transmitting data in user equipment of a wireless communication system using a carrier aggregation technique according to an embodiment of the present invention includes the steps of setting secondary cells included in an S-TAG (Secondary-Timing Advance Group) configured of only secondary cells (SCells), deactivating a downlink timing reference cell in the S-TAG; determining whether other activated secondary cells exist besides the deactivated downlink timing reference cell in the S-TAG, and when the other activated secondary cells exist in the S-TAG, setting one of the other activated secondary cells as a new downlink timing reference cell. According to the present invention, uplink transmission speed can be increased in the user equipment and user QoS can be improved by transmitting data using one or more uplink carriers in the terminal.

Abstract: A mobile communication system is provided. In particular, a method and an apparatus for transmitting/receiving data using a plurality of carriers in a mobile communication system is provided.