WHAT ARE THE NAMING CONVENTIONS IN SAE/LTE?

The nodes available in 4G are shown below.

To keep things simple and easy to understand, remember the relationship shown below.

1. LTE = E-UTRAN = RAN side of 4G = All these terminologies refer to RAN side.
2. SAE = EPC = Core Network (Packet Network ) = All these terminologies refer to core network

Abbreviations

• RAN = Radio Access Network
• E-UTRAN = Evolved- Universal Terrestrial Radio Access Network
• LTE = Long Term Evolution
• SAE = System Architecture Evolved
• EPC = Evolved Packet Core
• MME = Mobility Management Entity
• SGW = Serving Gateway
• PGW = Packet Data Network Gateway
• CN = Core Network