Wireless communication systems and methods for transmitting communication signals are provided. The first wireless communication device performs a first LBT during a first time period to transmit a first communication signal associated with the first priority. The first wireless communication device performs a second LBT during a second time period to transmit a second communication signal associated with the second priority, the first time period at least partially overlapping the second time period, the first The priority is different from the second priority. The first wireless communication device communicates with the second wireless communication device at least one of the first communication signal or the second communication signal based on at least one of the first LBT or the second LBT.
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