The 3GPP LTE architecture is called the System Architecture Evolution (SEA), and its overall goal is to deliver a simplified architecture based on all-IP traffic. It also supports high-speed communication and low latency over Radio Access Networks (RANs). In release 8 of the 3GPP roadmap, LTE was introduced. Since the network is entirely composed of IP packet-switched components, that means that voice data is also sent across as digital IP packets. This is another fundamental difference from the legacy 3G network.
3G topology used circuit switching for voice and SMS traffic and packet switching for data. Circuit switching differs fundamentally from packet switching. Circuit switching manifests from the original ...
