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Overview of GSM, GPRS, and UMTS_15784

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C H A P T E R

2

Overview of GSM, GPRS, and UMTS
The Cisco Mobile Exchange (CMX) architecture provides mobile wireless solutions for operators using
General Packet Radio Service (GPRS) and Universal Mobile Telecommunication System (UMTS)
access technologies. This chapter provides an overview of these technologies and their roles in the
evolution from second-generation (2G) to third-generation (3G) mobile wireless networks.
•

Global System for Mobile Communications (GSM)—A digital, mobile, radio standard developed
for mobile, wireless, voice communications

•

GPRS—An extension of GSM networks that provides mobile, wireless, data communications

•

UMTS—An extension of GPRS networks that moves toward an all-IP network by delivering
broadband information, including commerce and entertainment services, to mobile users via fixed,
wireless, and satellite networks

This chapter includes the following sections:
•

“Global Systems for Mobile Communications” section on page 2-2
– “GSM Technology Differentiator” section on page 2-3
– “GSM Network Elements” section on page 2-3
– “GSM Interfaces” section on page 2-6
– “GSM Data Services” section on page 2-7

•

“General Packet Radio Service” section on page 2-7
– “GPRS Architecture” section on page 2-10
– “GPRS Terminals” section on page 2-13
– “Data Routing” section on page 2-14
– “GPRS Interfaces” section on page 2-17
– “GPRS Protocol Stacks” section on page 2-18
– “GPRS Tunneling Protocol” section on page 2-19
– “GPRS Access Modes” section on page 2-20
– “GPRS Access Point Name” section on page 2-20
– “GPRS Processes” section on page 2-21

•

“Universal Mobile Telecommunication System” section on page 2-28
– “UMTS Services” section on page 2-28
– “UMTS Architecture” section on page 2-29

Cisco Mobile Exchange (CMX) Solution Guide
OL-2947-01

2-1

Chapter 2

Overview of GSM, GPRS, and UMTS

Global Systems for Mobile Communications

Global Systems for Mobile Communications
In the early 1980s, many countries in Europe witnessed a rapid expansion of analog cellular telephone
systems. However, each country developed its own system, and interoperability across borders became
a limiting factor.
In 1982, the Conference of European Post and Telecommunications (CEPT), an association of telephone
and telegraph operators in Europe, established a working group to develop a new public land mobile
system to span the continent. Because their working language was French, the group was called the
Groupe Speciale Mobile (GSM).
The...
CHAPTER
2-1
Cisco Mobile Exchange (CMX) Solution Guide
OL-2947-01
2
Overview of GSM, GPRS, and UMTS
The Cisco Mobile Exchange (CMX) architecture provides mobile wireless solutions for operators using
General Packet Radio Service (GPRS) and Universal Mobile Telecommunication System (UMTS)
access technologies. This chapter provides an overview of these technologies and their roles in the
evolution from second-generation (2G) to third-generation (3G) mobile wireless networks.
Global System for Mobile Communications (GSM)—A digital, mobile, radio standard developed
for mobile, wireless, voice communications
GPRS—An extension of GSM networks that provides mobile, wireless, data communications
UMTS—An extension of GPRS networks that moves toward an all-IP network by delivering
broadband information, including commerce and entertainment services, to mobile users via fixed,
wireless, and satellite networks
This chapter includes the following sections:
“Global Systems for Mobile Communications” section on page 2-2
“GSM Technology Differentiator” section on page 2-3
“GSM Network Elements” section on page 2-3
“GSM Interfaces” section on page 2-6
“GSM Data Services” section on page 2-7
“General Packet Radio Service” section on page 2-7
“GPRS Architecture” section on page 2-10
“GPRS Terminals” section on page 2-13
“Data Routing” section on page 2-14
“GPRS Interfaces” section on page 2-17
“GPRS Protocol Stacks” section on page 2-18
“GPRS Tunneling Protocol” section on page 2-19
“GPRS Access Modes” section on page 2-20
“GPRS Access Point Name” section on page 2-20
“GPRS Processes” section on page 2-21
“Universal Mobile Telecommunication System” section on page 2-28
“UMTS Services” section on page 2-28
“UMTS Architecture” section on page 2-29
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