CPC H04L 5/1438 (2013.01) [H04W 36/0069 (2018.08)] | 12 Claims |
1. A method performed by a terminal performing dual connectivity (DC) between a master base station and a secondary base station in a wireless communication system, the method comprising:
receiving, from the master base station, system information including a time division duplex (TDD) uplink (UL)-downlink (DL) configuration for a primary cell (PCell) associated with a master cell group (MCG) supported by the master base station;
receiving, form the master base station, a radio resource control (RRC) message including a first reference TDD configuration for determining an uplink transmission timing;
determining a second reference TDD configuration based on the TDD UL-DL configuration and the first reference TDD configuration; and
transmitting an uplink signal to at least one of the master base station or the secondary base station according to the second reference TDD configuration,
wherein in case that the TDD UL-DL configuration is one of configuration #0 and configuration #6 and the first reference TDD configuration is configuration #2, configuration #4 or configuration #5, the second reference TDD configuration is determined to be configuration #1.
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