A method for transmitting and receiving data in a wireless communication system, the method performed by a UE, the method comprising: establishing an inactivated Signaling Radio Bearer, SRB, with each of two or more base stations other than an old serving base station; transmitting two or more request messages requesting for activation of the inactivated SRB to the two or more base stations when detecting degradation of an old radio link established between the old serving base station and the UE, wherein the two or more base station provide a service to the UE instead of the old serving base station when the old serving base station cannot provide the service through the old radio link to the UE due to the degradation of the old radio link, wherein the two or more request messages include a cause field indicating a reason of SRB activation, wherein the reason of SRB activation is radio link failure avoidance, and wherein the radio link failure avoidance is to prevent data from not being transmitted and received due to a radio link failure; receiving, from the two or more base stations, two or more activation messages to activate the inactivated SRB in response to the two or more request messages, wherein each of the two or more activation messages includes load status information on one of the two or more base stations; selecting a base station among the two or more base station as a new serving base station based on the load status information included in each of the two or more activation messages; and transmitting an activation completion message to the base station selected as the new serving base station, wherein a specific inactivated SRB established between the base station selected as the new serving base station and the UE is activated after the base station selected as the new serving base station receives the activation completion message; and receiving, from the base station selected as the new serving base station, radio resource, RRC, reconfiguration message through the activated specific SRB. establishing an inactivated Signaling Radio Bearer, SRB, with each of two or more base stations other than an old serving base station; transmitting two or more request messages requesting for activation of the inactivated SRB to the two or more base stations when detecting degradation of an old radio link established between the old serving base station and the UE, wherein the two or more base station provide a service to the UE instead of the old serving base station when the old serving base station cannot provide the service through the old radio link to the UE due to the degradation of the old radio link, wherein the two or more request messages include a cause field indicating a reason of SRB activation, wherein the reason of SRB activation is radio link failure avoidance, and wherein the radio link failure avoidance is to prevent data from not being transmitted and received due to a radio link failure; receiving, from the two or more base stations, two or more activation messages to activate the inactivated SRB in response to the two or more request messages, wherein each of the two or more activation messages includes load status information on one of the two or more base stations; selecting a base station among the two or more base station as a new serving base station based on the load status information included in each of the two or more activation messages; and transmitting an activation completion message to the base station selected as the new serving base station, wherein a specific inactivated SRB established between the base station selected as the new serving base station and the UE is activated after the base station selected as the new serving base station receives the activation completion message; and receiving, from the base station selected as the new serving base station, radio resource, RRC, reconfiguration message through the activated specific SRB.