ncy neighbor cells relevant for cell reselection including cell reselection parameters common for a frequency as well as cell-specific reselection parameters. SIB5 contains information about E-UTRA frequencies and E-UTRA neighbor cells rele- vant for cell reselection, including cell reselection parameters common for a frequency as well as cell-specific reselection parameters. SIB6 contains an Earthquake and Tsunami Warning System (ETWS) primary notification. SIB7 contains an ETWS secondary notification. ETWS is a public warning system developed to satisfy the regulatory requirements for warning notifications related to earthquake and/or tsunami events. The ETWS warning notifications can either be a primary notifi- cation (short notification) or secondary notification (providing detailed information) [8]. New Radio Access Layer 2/3 Aspects and System Operation 239 Minimum system information (MIB) Periodically broadcast on BCH Minimum system information (SIB1) Periodically broadcast on DL-SCH Minimum system information (SIB1) Unicast on DL-SCH Other system information (SIBn) Periodically broadcast on DL-SCH Other system information (SIBn) Broadcast on-demand on DL-SCH Other system information (SIBn) Unicast on DL-SCH Figure 2.22 System information provisioning [8]. SIB8 contains a Commercial Mobile Alert System (CMAS)8 8 warning notification. SIB9 contains information related to Global Positioning System (GPS) time and coordi- nated universal time. Fig. 2.22 summarizes SI provisioning. For a cell/frequency that is considered for camping by the UE, the UE is not required to acquire the contents of the minimum SI of that cell/fre- quency from another cell/frequency layer. This does not preclude the case where the UE applies stored SI from previously visited cell(s). The UE would consider a cell as barred, if it cannot determine the full content of the minimum SI broadcast by that cell. The UE only acquires SI on the active BWP, when using bandwidth adaptation. The MIB is mapped to BCCH and is exclusively carried on B