When the subcarrier spacing of the CORESET is equal to the subcarrier spacing of the synchronization signal block (for example, the subcarrier spacing of the CORESET and the synchronization signal block is 15 kHz), as shown in FIGS. 6 and 7, in a carrier physical resource block grid (PRB grid), one carrier PRB includes 12 synchronization signal block subcarriers in frequency domain; therefore, there are 12 possible offset values, that is, a range of a value of the offset is 0 to 11 subcarriers, and a particular offset number (that is, the value of the offset) is indicated by 4 bits in the PBCH.
As shown in FIGS. 8 and 9, when the subcarrier spacing of the CORESET is less than the subcarrier spacing of the synchronization signal block (for example, the subcarrier spacing of the CORESET is 15 kHz, and the subcarrier spacing of the synchronization signal block is 30 kHz), a carrier physical resource block grid (PRB grid) is defined by the greater subcarrier spacing (30 kHz), and a smaller subcarrier is nested within a greater subcarrier, that is, one 30 kHz subcarrier corresponds to two 15 kHz subcarriers in frequency domain. In this case, in the carrier physical resource block grid (PRB grid), one carrier PRB includes 12 synchronization signal block subcarriers in frequency domain, a range of a value of the offset (offset) is 0 to 11 synchronization signal block (30 kHz) subcarriers, and a particular offset number (that is, the value of the offset) is indicated by 4 bits in the PBCH.
