This clause provides a comparison of the proposed schemes using different criteria. The comparison between different schemes is summarized Table 7.1-1.

The method of using a larger Channel BW than the licensed BW is based on blanking (not scheduling) PRBs within the larger BW but outside the irregular BW. If applied for the DL only, this method can be supported by specifying an asymmetric UE CHBW bandwidth configuration for band such that its UL CHBW is contained within the irregular UL block and the DL CHBW is larger than the irregular DL block. In this way UE unwanted emission requirement in the UL can be met by means of the regular UE CHBW. The larger DL UE CHBW implies a degraded UE adjacent channel selectivity and blocking performance when the interferer is close to the irregular DL block. However, the method can be supported by using existing UE architectures (since asymmetric bandwidths are supported by the current standard) in combination with new asymmetric CHBW combinations. The method works for both FDD and TDD. Overlapping channels from the network perspective can be used to support irregular spectrum allocations. This method can provide the full network capacity improvement in DL and UL to a spectrum utilization ≥90 % of the irregular BW (at 15 kHz SCS). This method can be used with legacy UE, even Rel-15, not requiring any changes at the UE side. Since a UE is configured with standard channel bandwidth, there are no issues with UE performance degradation relative to minimum requirements and all the regulatory requirements can be met as per legacy operation. The ACS and the blocking performance are not affected, hence there will be no impact on the network planning. The gNB has to support the irregular channel BW because from the network perspective RBs are scheduled across the whole spectrum block. That might also require new BS requirements for new irregular channels. This method provides a fast, generic, safe, and efficient solution for FDD and TDD bands.