The EPC is a packet-switched core network that supports 4G LTE and provides a seamless transition from 3G and 2G networks. It is designed to handle the increasing demand for mobile broadband services, offering faster data rates, lower latency, and improved network efficiency. The EPC consists of several key components, including:
Learn how differ using the IMS network.
Highway with a VIP lane labeled "VoLTE."
This paper provides an overview of the 4G LTE Evolved Packet Core (EPC)
The MME authenticates the subscriber with the HSS.
Fewer network nodes, reducing latency and simplifying network management.
: Manages policy decisions and flow-based charging, ensuring users receive the service quality they've paid for. The LTE "Attach" Call Flow
Connects the S-GW to the P-GW (S5 is internal to an operator; S8 is used during international roaming).
The "call flow" in LTE refers to the end-to-end signaling required to connect a User Equipment (UE) to the network. The initial attach procedure is the most critical flow: Full LTE architecture and components - YateBTS