receiving, by the terminal, an RRCReconfiguration, wherein the RRCReconfiguration includes one or more first Logical Channel Groups (LCGs) and a first Buffer Status Report-Config (BSR-config), and wherein each of the one or more first LCGs corresponds to at least a Data Radio Bearer (DRB);

receiving, by the terminal, an RRCRelease, wherein the RRCRelease includes first information for a second resume procedure, and wherein the first information for the second resume procedure includes a Signaling Radio Bearer2 (SRB2) indicator and a DRB list;

determining, by the terminal, radio bearers configured for the second resume procedure based on the first information for the second resume procedure;

receiving, by the terminal, system information, wherein the system information includes a first timer value, a second timer value, a first threshold, and a second threshold, and wherein the first threshold is related to a reference signal received power and the second threshold is related to a data volume;

initiating, by the terminal, the second resume procedure;

starting, by the terminal, a first timer after applying a second BSR-config;

receiving, by the terminal, an RRCResume; and

stopping, by the terminal, the first timer,

wherein the terminal performs buffer status reporting based on: