Initial access and Registration (Drive Test Simulation)

Initial access and Registration (Drive Test Simulation)

UE needs to register with the network to get authorized to receive services, to enable mobility tracking and reachability.

In a case when UE powers ON, initial registration is performed. UE needs to select the network and determine to which public land mobile network (PLMN) to attempt registration.

· Initial access consists of functions where the cell search and acquisition are done at first allowing a UE to synchronize to the target cell.
· The system information (SI) helps UE to acquire the information needed to access the network.
· Then System information block (SIB) in DL includes configurations for the UE, such as cell selection/reselection, random access parameters, PLMN identity and access class barring list.
· Initial access from UE to Base station starts from Random Access procedure.
· Radio resource control (RRC) is setup and then an initial NAS message establish a signaling connection between UE and Core Network.

👉 Attached is the simulation from drive test during initial access and it belongs to the course on RAN Engineering - https://www.itelcotech.com/learningpath/ran-engineer-4g-and-5g