WHAT ARE THE NAMING CONVENTIONS IN SAE/LTE?

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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
Naming Conventions in LTE/SAE

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
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