A method performed by a UE in a wireless communication system, comprising: setting a plurality of versions of UE capability and version indexes indicating each version; initiating a radio resource control, RRC, connection setup procedure with a network; transmitting, to the network, a current version of the UE capability among the plurality of versions, a first version index indicating the current version of the UE capability, a specific version of UE capability among the plurality of versions, and a second version index indicating the specific version of the UE capability, after the RRC connection setup procedure; updating the current version of the UE capability to a new current version of the UE capability, by limiting at least one part of the UE capability based on both of a state of charge of a battery of the UE and a degree of overheating of the UE; and upon updating the current version of the UE capability to the new current version of the UE capability, initiating a UE capability procedure; wherein the UE capability procedure comprises: determining whether the network already stores the new current version of the UE capability based on that the new current version of the UE capability is same as the specific version of the UE capability, which is transmitted to the network after the last RRC connection setup procedure, and that a validity timer corresponding to the specific version is running; transmitting, to the network, only the second version index indicating the new current version of the UE capability, based on determining that the network already stores the new current version of the UE capability; wherein each version of UE capability includes a category of the UE, Packet Data Convergence Protocol, PDCP, parameters of the UE, power management related information, code resource information, and encryption related information. setting a plurality of versions of UE capability and version indexes indicating each version; initiating a radio resource control, RRC, connection setup procedure with a network; transmitting, to the network, a current version of the UE capability among the plurality of versions, a first version index indicating the current version of the UE capability, a specific version of UE capability among the plurality of versions, and a second version index indicating the specific version of the UE capability, after the RRC connection setup procedure; updating the current version of the UE capability to a new current version of the UE capability, by limiting at least one part of the UE capability based on both of a state of charge of a battery of the UE and a degree of overheating of the UE; and upon updating the current version of the UE capability to the new current version of the UE capability, initiating a UE capability procedure; wherein the UE capability procedure comprises: determining whether the network already stores the new current version of the UE capability based on that the new current version of the UE capability is same as the specific version of the UE capability, which is transmitted to the network after the last RRC connection setup procedure, and that a validity timer corresponding to the specific version is running; transmitting, to the network, only the second version index indicating the new current version of the UE capability, based on determining that the network already stores the new current version of the UE capability; determining whether the network already stores the new current version of the UE capability based on that the new current version of the UE capability is same as the specific version of the UE capability, which is transmitted to the network after the last RRC connection setup procedure, and that a validity timer corresponding to the specific version is running; transmitting, to the network, only the second version index indicating the new current version of the UE capability, based on determining that the network already stores the new current version of the UE capability; wherein each version of UE capability includes a category of the UE, Packet Data Convergence Protocol, PDCP, parameters of the UE, power management related information, code resource information, and encryption related information.