Transcript The Evolution of 4G

Evolution of
4G
By
Sai Anirudh kantabathina
Ravi Pinjala
INTRODUCTION
What is this Research project
about?
SERVICE EVOLUTION
Wire
less Telephone technologies
Pre-Cellular
Predecessor
Services
Operators
CONTD..
Wireless
Telephone technologies
First Generation
Analog signals, AMPS
FDM,Separate radio
frequencies
NMT,Hicap,CDPD
CONTD..
 Wireless
Telephone technologies
Second Generation
GSM standard
Digital Encryption
Data Services
 Multiplexing , Codecs
CDMA, TDMA
Iden,PDC,CSD
2.5G,2.75G
CONTD..
 Wireless
Telephone technologies
Third Generation
ITU-2000 Standard
EVDO
Frequency Migration
WCDMA,CDMA-2000
WiMax,DECT
ABOUT 4G
 Introducing
4G
 Applications
High usability
 Extensive Support for Multimedia
services
 Personalization
 Integrated Services

TECHNOLOGIES IN 4G
OFDMA
 Software Defined Radio
 MIMO
 Hand over and Mobility
 Inter layer optimization

Challenges in 4G Technology
Mobile Station
 Should create multi-mode user terminals.
 Able to discover various wireless networks.
 Increase in wireless technologies complicates
their selection.
Proposed solutions:

Software Radio Approach, User/System initiated Automatic
Downloads of Software modules, Selecting according to best
fit of User-QoS requirements, network resources, and
preferences.
Contd..
System
 Build terminal mobility (locate/update).
 Integrate Non-IP and IP based systems, provide
QoS to end-end services.
 Security Issue for heterogeneous wireless
networks.
 Improvement in fault tolerance.
Proposed solutions:

Signaling schemes, QoS schemes, Security schemes and
fault tolerant architectures.
Contd..



Services
Managing and billing customer’s Accounting
information from multiple service providers.
Provide consistent personal mobility without
modifying existing servers.
Proposed solutions:
Introducing various billing and accounting
frameworks, personal mobility frameworks.
Suggestions
In order to introduce 4G into the market, we need
to start use of low cost effective 4G chips in the
consumer the electronics.
 Integrating the existing technologies into a single
stream is an important priority.
 Backward compatibility should made be possible.
2G
3G
4G
 Building the system with less cost by using
existing frequencies for 3G instead of buying new
frequencies.


QUESTIONS….?