The present invention relates to a method of performing data transmission in a wireless communication system. Especially, the method includes the steps of transmitting data on a first bandwidth part (BWP) among a plurality of BWPs configured for data transmission in a radio resource control (RRC) inactive state (RRC_INACTIVE); switching from the first BWP to a second BWP among the plurality of BWPs, when a positive response message of the data is not received from the network within a pre-defined period; and transmitting the data on the second BWP.

The present invention relates to a method of performing data transmission in a wireless communication system. Especially, the method includes the steps of transmitting data on a first bandwidth part (BWP) among a plurality of BWPs configured for data transmission in a radio resource control (RRC) inactive state (RRC_INACTIVE); switching from the first BWP to a second BWP among the plurality of BWPs, when a positive response message of the data is not received from the network within a pre-defined period; and transmitting the data on the second BWP.

A system and a for dynamic uplink transmitter switching may include configuring, by a user equipment (UE), a first uplink (UL) transmission on one or more carriers out of at least three carriers; configuring, by the UE, a second UL transmission on the one or more carriers out of the at least three carriers; and scheduling, by the UE, an interruption time on one or more of the at least three carriers according to a predetermined criteria based on a state of transmit (Tx) chains for the first UL transmission and a state of Tx chains for the second UL transmission.

A system and a for dynamic uplink transmitter switching may include configuring, by a user equipment (UE), a first uplink (UL) transmission on one or more carriers out of at least three carriers; configuring, by the UE, a second UL transmission on the one or more carriers out of the at least three carriers; and scheduling, by the UE, an interruption time on one or more of the at least three carriers according to a predetermined criteria based on a state of transmit (Tx) chains for the first UL transmission and a state of Tx chains for the second UL transmission.

An operation method of a terminal in a communication system may comprise: predicting traffic using a traffic prediction function configured according to traffic prediction configuration information; transmitting a buffer prediction status report including a traffic prediction result to a base station; receiving a first physical uplink shared channel (PUSCH) resource allocation information generated based on the buffer prediction status report; and transmitting data to the base station using first resources allocated by the first PUSCH resource allocation information.

An operation method of a terminal in a communication system may comprise: predicting traffic using a traffic prediction function configured according to traffic prediction configuration information; transmitting a buffer prediction status report including a traffic prediction result to a base station; receiving a first physical uplink shared channel (PUSCH) resource allocation information generated based on the buffer prediction status report; and transmitting data to the base station using first resources allocated by the first PUSCH resource allocation information.

A network entity and an operating method thereof in a communication system are provided. The method includes establishing a first connection with a user equipment (UE) using a first access technology; receiving, from the UE, via the first connection, capability information on communication with a second cell using a second access technology different from the first access technology; transmitting a first signal to the UE via the first connection; and transmitting, to the UE, via the first connection, configuration information related to the second cell for establishing a second connection between the UE and the second cell. The first cell and the second cell are simultaneously active for the UE.

A network entity and an operating method thereof in a communication system are provided. The method includes establishing a first connection with a user equipment (UE) using a first access technology; receiving, from the UE, via the first connection, capability information on communication with a second cell using a second access technology different from the first access technology; transmitting a first signal to the UE via the first connection; and transmitting, to the UE, via the first connection, configuration information related to the second cell for establishing a second connection between the UE and the second cell. The first cell and the second cell are simultaneously active for the UE.

The present disclosure relates to a communication technique for converging IoT technology with a 5G communication system for supporting a higher data transfer rate beyond a 4G system, and a system therefor. The present disclosure can be applied to intelligent services (e.g., smart homes, smart buildings, smart cities, smart or connected cars, health care, digital education, retail business, and services associated with security and safety) on the basis of 5G communication technology and IoT-related technology. Disclosed are a method and an apparatus for configuring an efficient hierarchical layer 2 architecture and main functions thereof in a next-generation mobile communication system.

The present disclosure relates to a communication technique for converging IoT technology with a 5G communication system for supporting a higher data transfer rate beyond a 4G system, and a system therefor. The present disclosure can be applied to intelligent services (e.g., smart homes, smart buildings, smart cities, smart or connected cars, health care, digital education, retail business, and services associated with security and safety) on the basis of 5G communication technology and IoT-related technology. Disclosed are a method and an apparatus for configuring an efficient hierarchical layer 2 architecture and main functions thereof in a next-generation mobile communication system.