Mobility Optimization

Mobility is the key procedure for ensuring that users can move freely within a network. The long‐term evolution (LTE) mobility can be divided into “intra‐LTE mobility” and “inter‐LTE mobility”. It can be further divided into RRC_connected and RRC_idle mode mobility. When the UE is powered on, before RRC, it says that the UE is in idle mode. When the UE is in idle mode, it uses reselection for its mobility. In idle mode mobility it is largely controlled by the UE (based on broadcast parameters) and so the exact behavior may vary somewhat between UE models. Intra‐LTE handover feature manages the UE in connected mode and allows for seamless mobility from one LTE cell to another. In contrast to idle mode, connected mode mobility is entirely managed by the LTE RAN based on configured and received measurement reports from the UE. Only hard handover is supported in LTE.