4g Lte Evolved Packet Core Epc Concepts And Call Flows Download Hot [new] -

This flow occurs when a user moves from one eNodeB to another where there is no direct X2 interface between them.

If a user needs an additional service (like a specific APN for Work or IMS for VoLTE), a secondary PDN connection is established. The UE sends a . The MME validates the request with the HSS and PCRF. This flow occurs when a user moves from

The UE is instructed to switch to the target eNodeB. Data packets are buffered and forwarded to prevent loss. This flow occurs when a user moves from