Method and device for performing wireless communication in unlicensed band
摘要
說明書
The controller 2910 may perform a listen before talk (LBT) for the SSB burst set in the unlicensed band. An LBT needs to be performed for the corresponding unlicensed band to perform SSB transmission in the NR-U cell in the unlicensed band configured by the base station. Where the radio channel in the corresponding unlicensed band is empty as a result of performing the LBT, the transmitter 2920 may transmit the SSB via the radio channel of the unlicensed band.
For example, it is assumed that for four slots in the SSB burst, the SSB indexes where SSB transmission is possible are set to #0 to #7. That is, in the first half of the first slot, SSB_index=0 and, in the last half, SSB_index=1. Likewise, in the first half of the second slot, SSB_index=2 and, in the last half, SSB_index=3. Sequentially, in the first half of the third slot, SSB_index=4 and, in the last half, SSB_index=5, and in the first half of the fourth slot, SSB_index=6 and, in the last half, SSB_index=7.
For example, if according to the initial configuration, such an SSB transmission pattern may be configured in which the SSB is transmitted at SSB_index=0 in the first half of the first slot and SSB_index=4 positioned in the first half of the third slot, the controller 2910 may perform an LBT for SSB_index=0. If the LBT succeeds, the transmitter 2920 may transmit the SSBs from SSB_index=0, according to the predetermined pattern, for the corresponding unlicensed band, according to the initial settings. However, if the LBT fails, the transmitter 2920 may not perform SSB transmission from SSB_index=0, according to the initial settings.
