PDCCH CORESET Mapping for Narrowband Private Network Reception

The patent changes the mapping parameters by redefining the correspondence between PDCCH and CCEs specifically for narrowband scenarios. Instead of using the existing interleaved mapping relationship, the patent establishes a new direct mapping where PDCCH corresponds to X consecutive CCEs starting from a first CCE in frequency increasing direction, with all CCEs constrained within a first bandwidth range less than 24 RBs. This parameter change resolves the contradiction by adapting the mapping relationship to narrowband constraints while maintaining implementation feasibility.

The patent applies local quality by creating a specialized mapping relationship tailored for narrowband private network scenarios. The first bandwidth range (less than 24 RBs) is specifically designed for narrowband conditions, while the existing mapping relationships can still be used in wider bandwidth scenarios. This local adaptation ensures complete CCE containment within available bandwidth for narrowband cases without unnecessarily restricting bandwidth utilization in other scenarios.

The patent inverts the conventional approach by abandoning the interleaved mapping relationship that provides frequency diversity in wideband scenarios. Instead, it adopts a direct consecutive mapping where PDCCH corresponds to X consecutive CCEs within a constrained bandwidth range. This inversion is specifically applied to narrowband scenarios where frequency diversity through interleaving cannot be effectively achieved due to limited bandwidth, thereby preventing information loss while maintaining appropriate diversity through other means.