Apparatus and method for operating radio access technology in communication system supporting time division duplexing scheme

An operating method of a user equipment (UE) supporting a time division multiplexing (TDD) scheme, the operating method comprising:

• receiving, from a base station (BS) which uses a second radio access technology (RAT), information of a TDD uplink (UL)-downlink (DL) subframe configuration used in a wideband cellular BS, timing information indicating UL timing of the wideband cellular BS supporting a first RAT different from the second RAT and margin information indicating timing margin for synchronizing the UL timing of the wideband cellular BS with UL timing of the BS supporting the second RAT;
• and
• transmitting, to the BS, uplink signals based on the information of the TDD UL-DL subframe configuration used in the wideband cellular BS, the timing information of the wideband cellular BS and the timing margin,
• wherein the timing margin is applied to a last part of each of the uplink signals by the UE.

A base station (BS) supporting a time division multiplexing (TDD) scheme, the BS comprising:

• a processor including a receiver and a controller configured to:
• receive from a wideband cellular BS supporting a first radio access technology (RAT) or predict information of a TDD uplink (UL)-downlink (DL) subframe configuration used in the wideband cellular BS, and timing information indicating UL timing of the wideband cellular BS;
• and
• determine margin information indicating timing margin for synchronizing the UL timing of the wideband cellular BS with UL timing of the BS supporting a second RAT different from the first RAT, and
• a transmitter configured to transmit, to a user equipment (UE) which uses the RAT, the information of a TDD UL-DL subframe configuration used in the wideband cellular BS, the timing information of the wideband cellular BS and the margin information,
• wherein the receiver is configured to receive, from the UE, uplink signals based on the information of the TDD UL-DL subframe configuration used in the wideband cellular BS, the timing information of the wideband cellular BS and the timing margin, and
• wherein the timing margin is applied to a last part of each of the uplink signals by the UE.