In this case, the anchor sub-band may be configured, in a localized method, to have a center X MHz (or K PRBs) of a NR frequency band configured by the corresponding NR BS/cell.

Further, as illustrated in FIG. 3, anchor sub-bands having a Y MHz (or M PRBs) is distributed in the entire NR system band in a distributed method.

In these cases, the values of X, Y (or K, M) may have fixed values or be determined as a function of a bandwidth of the NR frequency band or a type of the anchor numerology (such as, a subcarrier spacing and a resultant subframe or TTI length).

Additionally, UE-specific numerologies, N_UE1, N_UE2, . . . , N_UEk may be multiplexed based one of the TDM, the FDM, and the hybrid of TDM and FDM in the corresponding UE-specific frequency. The UE specific numerologies may be configured differently according to each UE by a corresponding NR BS/cell.

Method 3. Hybrid FDM/TDM

FIG. 4 illustrates an exemplary method of configuring an anchor numerology and a UE-specific numerology based on the TDM/FDM in the NR according to some embodiments of the present disclosure. For example, FIG. 4 shows the anchor numerology and UE-specific numerology configured based on the combination of the above methods 1 and 2.

Referring to FIG. 4, an anchor sub-band described in the Method 2 may be defined within an anchor interval T_a repeated with the period P_a of the Method 1 and the other time interval(s) and frequency intervals are configured to be UE-specific regions.