Method and device for performing wireless communication in unlicensed band
摘要
說明書
According to the above-described embodiment 1, the gNB may provide a chance of performing an LBT to be able to perform SSB transmission as fast as possible although an LBT fails via configuration of multiple SSB indication patterns. Further, a method for transferring information about multiple patterns to the UE has been described in connection with embodiment 1.
Unlike what has been described above, in embodiment 2, a single SSB indication information/pattern may be provided like in legacy NR. Together with this, a range value related to SSB detection may be additionally designated. For example, if the value ‘N_add’=1 is provided, the UE may attempt SSB detection for the SSB indexes in the range of the existing position+1. Accordingly, if LBT fails in the corresponding position, a chance of additional transmission of the SSB may be provided depending on whether LBT succeeds in the very subsequent interval. The ‘N_add’ value set at this time may be defined in, e.g., + direction, ? direction, or ±direction.
As an example, it is assumed that the N_add value is a positive value, and the existing SSB indication information (L=8) is [10001000]. For example, if N_add is set to +2, the first UE detection attempt SSB_index becomes [0,4], in relation to the SSB_index range where the UE is to perform detection, as shown in
