16.3.3a Slice-based cell reselection

Slice-based cell reselection information can be included in SIB16 and in RRCRelease messages. The slice-based cell reselection information may include reselection priorities per NSAG per frequency and corresponding list(s) of cells where the slices of the NSAG are supported or not supported. The UE determines the NSAG(s) and their priorities to be considered during cell reselection as specified in TS 23.501 [3], and in TS 38.304 [10].

When a UE supports slice-based cell reselection, and when slice-based cell reselection information is provided to the UE, then the UE uses the slice-based cell reselection information. Valid cell reselection information provided in RRCRelease always has a priority over cell reselection information provided in SIB messages. When no slice-based cell reselection information is provided for any NSAG that was determined to be considered during cell reselection (as specified in TS 23.501 [3]), then the UE uses the general cell reselection information, i.e., without considering the NSAG(s) and their priorities.