Chapter 11 Protocols

11.1 Introduction

This chapter provides an overview of the main protocols used in the EPS with the aim to give a basic overview of these protocols and their basic properties.

11.2 GPRS Tunnelling Protocol Overview

The original version of the GTP protocol is what the GSM standards developed to cater to the specific needs such as mobility and bearer management and tunnelling of user data traffic for GPRS. Then 3GPP further enhanced GTP for usage in 3G UMTS. During the development of EPS, the GTP track of the architecture was enhanced considerably to improve the bearer handling and thus the GTP control plane protocol was upgraded to GTPv2-C.

The two main components of GTP are the control plane part of GTP (GTP-C) and ...

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