Wireless communication apparatus for supporting a plurality of radio access technologies and wireless communication method thereof

A wireless communication method comprising:

• receiving, by a wireless communication apparatus, a first downlink signal from a base station through a first frequency band, the first downlink signal corresponding to a first radio access technology (RAT), the first frequency band comprising a second frequency band allocated for transmission of a second downlink signal corresponding to a second RAT;
• detecting, by the wireless communication apparatus, a target slot on the second frequency band based on the first downlink signal;
• performing, by the wireless communication apparatus, synchronization with the base station by acquiring synchronization signal (SS) burst on the target slot;
• detecting, by the wireless communication apparatus, the second downlink signal based on the synchronization signal (SS) burst after the synchronization is completed;
• and
• decoding, by the wireless communication apparatus, the second downlink signal to acquire an upper layer signal included in the second downlink signal.

A wireless communication apparatus comprising:

• a radio frequency (RF) circuit configured to receive a downlink signal, the downlink signal including at least one of a first downlink signal corresponding to first radio access technology (RAT) or a second downlink signal corresponding to a second RAT through a first frequency band;
• a first baseband processor configured to process the first downlink signal;
• and
• a second baseband processor configured to process the second downlink signal, the second baseband processor further configured to perform an operation based on a result of decoding the first downlink signal of the first baseband processor,
• wherein the second baseband processor is further configured to detect the second downlink signal in response to the result of decoding the first downlink signal indicating that there is no multicast traffic.