3GPP LTE Evolved Packet Core Architecture
LTE is all- IP advanced core architecture proposed in release 8 of 3GPP to only process packets.
The core is named as Evolved Packet Core (EPC). The primary goals of this architecture was to achieve higher data rates, low latency, with support for multiple radio access techniques.
The technology is developed to support enhanced media centric services with highest level of QoE (Quality of Experience).
The core is named as Evolved Packet Core (EPC). The primary goals of this architecture was to achieve higher data rates, low latency, with support for multiple radio access techniques.
The technology is developed to support enhanced media centric services with highest level of QoE (Quality of Experience).
High performance is a result of highly efficient and separate data and control paths and a flat IP core. The flattened out IP architect allows less number of software layers to traverse to process data. The EPC is evolved around new architectures of Mobility Management Entity (MME), Serving System (S) Architecture (A) Evolution (E) Gateway or Serving Gateway SGW, Packet Data Network (PDN) SAE Gateway and Enhanced Packet Data Gateway (ePDG). Figure below shows the architecture of Evolved Packet Core or EPC.
Main components of EPC are listed below:-
Serving System (S) Architecture (A) Evolution (E)
Gateway or Serving Gateway SGW.
Packet Data Network (PDN) SAE Gateway
Enhanced Packet Data Gateway (ePDG)
Gateway or Serving Gateway SGW.
Packet Data Network (PDN) SAE Gateway
Enhanced Packet Data Gateway (ePDG)
IMS is IP Multimedia Switch
Access more topics on 4G UMTS LTE Tutorial
Long Term Evolution (LTE), data rates, Core Air and Radio networks, seamless mobility, Evolved Packet core (EPC), SAE etc. Mobility Management Entity (MME), Serving Gateway SGW. Packet Data Network (PDN) SAE Gateway Enhanced Packet Data Gateway (ePDG)
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