Data and Pilots Data and Pilots Data and Pilots Data and Pilots Superframe Normal Mode Low Duty Mode Normal Mode FIGURE 4-24 Femto BS operational state procedures (assuming that femto BS transmits overhead channels during low duty mode) CHAPTER 4 IEEE 802. 16m System Operation and State Diagrams compliant UE has two steady-state operational states: RRC_CONNECTED and RRC_IDLE. A UE is in RRC_CONNECTED when an RRC connection or control-plane has been established. If this is not the case, i.e., no RRC connection is in place, the UE is in RRC_IDLE state. The 3GPP UE states only correspond to the steady-state behavior, and the transient procedures for cell search and selection, as well as network entry/re-entry, are not designated as states. The 3GPP UE steady-state states should be compared with the IEEE 802.16 counterparts in Figure 4-2 in order to better understand the similarities and differences of the two systems. The RRC states can further be characterized as follows. RRC_IDLE: UE specific Discontinuous Reception (DRXXiv) is configured by upper layers; UE controlled mobility is performed; the UE monitors a paging channel to detect incoming calls; system information change is tracked, and for Earthquake and Tsunami Warning System (ETWS) capable UEs, ETWS notification is monitored; UE performs neighboring cell measurements and cell selection/re-selection and acquires system information. RRC_CONNECTED: Transfer of unicast data to/from UE; At lower layers, the UE may be configured with a UE specific DRX (this type of DRX is similar to IEEE 802.16m sleep cycle); Network controlled mobility, i.e., handover and cell change order with optional Network Assisted Cell Change (NACC) to GERAN. The UE monitors a paging channel and/or System Information Block Type 1 contents to detect system information change, and for ETWS capable UEs, ETWS notification. The UE further monitors control channels associated with the shared data channel to determine if data is scheduled for it, and provides channel quality and feedback informat