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 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 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 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 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: Provided are a method and apparatus for determining connection configuration between a user equipment (UE) and a base station (ENB) and performing handover in a wireless communication system supporting dual connectivity. The method of setting a connection configuration for a UE in a wireless communication system supporting dual connectivity may include: detecting occurrence of a handover event; selecting a macro ENB with the highest signal strength among neighboring macro ENBs and a small ENB with the highest signal strength among neighboring small ENBs; checking whether dynamic association is allowed in dual connectivity; and determining the connection configuration for the UE on the basis of the selected ENBs and checking result.

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: Provided are a method and apparatus for determining connection configuration between a user equipment (UE) and a base station (ENB) and performing handover in a wireless communication system supporting dual connectivity. The method of setting a connection configuration for a UE in a wireless communication system supporting dual connectivity may include: detecting occurrence of a handover event; selecting a macro ENB with the highest signal strength among neighboring macro ENBs and a small ENB with the highest signal strength among neighboring small ENBs; checking whether dynamic association is allowed in dual connectivity; and determining the connection configuration for the UE on the basis of the selected ENBs and checking result.

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). Embodiments of the present disclosure provide a method and an apparatus for efficiently controlling a handover process and a Radio Link Failure (RLF) process. According to embodiments of the present disclosure, an operating method of a User Equipment (UE) includes starting a first timer while a second timer regarding a radio link failure (RLF) is running, and if one of the first timer and the second timer expires, performing a radio resource control (RRC) connection re-establishment. When the handover and the RLF concurrently occur in the mobile communication system, the embodiments of the present disclosure can minimize the service interruption time by conducting the handover instead of the Radio Resource Control (RRC) connection re-establishment due to the RLF.

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 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: Provided are a radio resource management method and apparatus for transmitting and receiving handover messages in a mobile communication system. The radio resource management method for a source base station (source ENB) handling handover in a mobile communication system may include: determining resource information for silencing so that at least one ENB does not perform downlink or uplink transmission when a handover related message is sent or received for handover processing; determining to handover a user equipment (UE); and carrying out handover for the UE according to the determined resource 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). Embodiments of the present disclosure provide a method and an apparatus for efficiently controlling a handover process and a Radio Link Failure (RLF) process. According to embodiments of the present disclosure, an operating method of a User Equipment (UE) includes starting a first timer while a second timer regarding a radio link failure (RLF) is running, and if one of the first timer and the second timer expires, performing a radio resource control (RRC) connection re-establishment. When the handover and the RLF concurrently occur in the mobile communication system, the embodiments of the present disclosure can minimize the service interruption time by conducting the handover instead of the Radio Resource Control (RRC) connection re-establishment due to the RLF.

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). Embodiments of the present disclosure provide a method and an apparatus for efficiently controlling a handover process and a Radio Link Failure (RLF) process. According to embodiments of the present disclosure, an operating method of a User Equipment (UE) includes starting a first timer while a second timer regarding a radio link failure (RLF) is running, and if one of the first timer and the second timer expires, performing a radio resource control (RRC) connection re-establishment. When the handover and the RLF concurrently occur in the mobile communication system, the embodiments of the present disclosure can minimize the service interruption time by conducting the handover instead of the Radio Resource Control (RRC) connection re-establishment due to the RLF.

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: Provided are a method and apparatus for determining connection configuration between a user equipment (UE) and a base station (ENB) and performing handover in a wireless communication system supporting dual connectivity. The method of setting a connection configuration for a UE in a wireless communication system supporting dual connectivity may include: detecting occurrence of a handover event; selecting a macro ENB with the highest signal strength among neighboring macro ENBs and a small ENB with the highest signal strength among neighboring small ENBs; checking whether dynamic association is allowed in dual connectivity; and determining the connection configuration for the UE on the basis of the selected ENBs and checking result.

Abstract: Provided are a method and apparatus for determining connection configuration between a user equipment (UE) and a base station (ENB) and performing handover in a wireless communication system supporting dual connectivity. The method of setting a connection configuration for a UE in a wireless communication system supporting dual connectivity may include: detecting occurrence of a handover event; selecting a macro ENB with the highest signal strength among neighboring macro ENBs and a small ENB with the highest signal strength among neighboring small ENBs; checking whether dynamic association is allowed in dual connectivity; and determining the connection configuration for the UE on the basis of the selected ENBs and checking result.

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). Embodiments of the present disclosure provide a method and an apparatus for efficiently controlling a handover process and a Radio Link Failure (RLF) process. According to embodiments of the present disclosure, an operating method of a User Equipment (UE) includes starting a first timer while a second timer regarding a radio link failure (RLF) is running, and if one of the first timer and the second timer expires, performing a radio resource control (RRC) connection re-establishment. When the handover and the RLF concurrently occur in the mobile communication system, the embodiments of the present disclosure can minimize the service interruption time by conducting the handover instead of the Radio Resource Control (RRC) connection re-establishment due to the RLF.

Abstract: Provided are a radio resource management method and apparatus for transmitting and receiving handover messages in a mobile communication system. The radio resource management method for a source base station (source ENB) handling handover in a mobile communication system may include: determining resource information for silencing so that at least one ENB does not perform downlink or uplink transmission when a handover related message is sent or received for handover processing; determining to handover a user equipment (UE); and carrying out handover for the UE according to the determined resource information.