EPC (Evolved Packet Core)
EPC stands for 'Evolved Packet Core'. It is the core network of 4G/LTE mobile network.
EPC consists of several elements that handle different functions such as:
- Mobility Management: The Mobility Management Entity (MME) manages the signaling required for user equipment attachment, authentication, and mobility.
- User Plane Routing: The Serving Gateway (S-GW) and Packet Data Network Gateway (P-GW) handle the routing of user data traffic between the user equipment and external IP networks.
- Policy and Charging Control: The Policy and Charging Rules Function (PCRF) enforces policies related to user services, quality of service, and charging.
- Authentication and Subscriber Database: The Home Subscriber Server (HSS) maintains the subscriber database and handles authentication.
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Offline Charging vs. Online Charging in LTE
The type of charging in LTE mobile network, may be Offline Charging or Online Charging. The main difference between the two types, is whether the charging can affect the user data session in real time or not. Offline Charging can not affect the user data session in real time. While the online charging can affect…
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LTE (4G) Network Architecture
LTE (4G) Network Nodes LTE refers to 'Long Term Evolution', and the architecture of the LTE (4G) network is as following, eNodeB The eNodeB is the 4G site that the UE connects to. It provides the radio interface to the UE. MME MME refers to 'Mobility Management Entity'. The MME is responsible for authenticating the…
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