System
Architecture Evolution (aka SAE) is the core network architecture of 3GPP's
future LTE wireless communication standard.
SAE
is the evolution of the GPRS Core Network, with some differences.
The
main principles and objectives of the LTE-SAE architecture include :
A common
anchor point and gateway (GW) node for all access technologies
IP-based
protocols on all interfaces;
Simplified
network architecture
All IP network
All services
are via Packet Switched domain
Support
mobility between heterogeneous RATs, including legacy systems as GPRS, but also
non-3GPP systems (say WiMAX)
Support for multiple, heterogeneous
RATs, including legacy systems as GPRS, but also non-3GPP systems (say WiMAX)
