LTE 是3G向4G演进的版本。本书系统地介绍了3GPP长期演进的技术原理和系统设计。-LTE is the evolution of 3G to 4G version. This book introduces the principles of 3GPP Long Term Evolution technology and system design.

This is a doc for LTE-SAE

The present document defines the Stage 2 service descr iption for the Evolved 3GPP Packet Switched Domain - also known as the Evolved Packet System (EPS) in this document. The Evolved 3GPP Packet Switched Domain provides