Management Information System

Group members :-• MANE:- Roll. No. Enrollment

no• Vyas Bhumit (120)

137680592160• Voraliya Nishit (119) 137680592159• Prajapati Dipesh (100)

137680592107• Panchamiya Yesh (90)

137680592085• Khankhala Nitesh (83)

137680592060

Difference Between 3G & 4G

Cellular Network Generations

Flow of Presentation

• Introduction• Cellular Network & Generations• 4G• Advantages of LTE• Major LET Radio Technologies• Measurement Steps • Background difference between 3G & 4G• Conclusion

Introduction of Cellular Network

• Base stations transmit to and receive from mobiles at the assigned spectrum• Multiple base stations use the same spectrum (spectral reuse)

• The service area of each base station is called a cell

• Each mobile terminal is typically served by the ‘closest’ base stations

• Handoff when terminals move

Cellular Network Generations• It is useful to think of cellular Network/telephony in

terms of generations: • 0G: Briefcase-size mobile radio telephones• 1G: Analog cellular telephony• 2G: Digital cellular telephony• 3G: High-speed digital cellular telephony (including video

telephony)• 3.5G: Not an officially recognized standard by the ITU. It is

an interim or evolutionary step to the next generation of cellular technology that will be known as IMT-Advanced according to definitions

by the ITU.• 4G: IP-based “anytime, anywhere” voice, data, and

multimedia telephony at faster data rates than 3G

4G “anytime, anywhere”• 4G (LTE)• LTE stands for Long Term Evolution• Next Generation mobile broadband technology• Promises data transfer rates of 100 Mbps• Based on UMTS 3G technology• Optimized for All-IP traffic

Advantages of LTE

Comparison of LTE Speed

Major LTE Radio Technologies

• Uses Orthogonal Frequency Division Multiplexing (OFDM) for downlink

• Uses Single Carrier Frequency Division Multiple Access (SC(single carrier )-FDMA) for uplink

• Uses Multi-input Multi-output(MIMO) for enhanced throughput

• Higher RF power amplifier efficiency (less battery power used by handsets)

Context

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Evolved hardware technologies+

Improved network bandwidth=

Entertainment apps on mobile

ContextWhen you are NOT mobile, you use(Wireless Fidelity )

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Context

Millions of passengers per day!

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Context

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Can HSPA(High Speed Packet Access ) provide the same level of service to mobile users on public transport?

pictures’ source: Wikipedia

HSPA Node B

HSPA Node B

Measurement Setup• Two Servers:• Lab & Data Center

• Three types of evaluations: • download only; upload only;

simultaneous download & upload.

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Background difference: Between 3G & 4G

1. Network:- 3G technologies are in widespread use while 4G compliant

technologies are still in the horizon

2. 4G speeds are much faster compared to 3G:- 4G speeds are meant to exceed that of 3G. Current 3G

speeds are topped out at 14Mbps downlink and 5.8Mbps uplink. To be able to qualify as a 4G technology, speeds of up to 100Mbps must be reached for a moving user and 1Gbps for a stationary user

3. Features and capabilities:-

Specifications 3G 4G

Frequency Band 1.8 – 2.5 GHz 2 – 8 GHz

Bandwidth 5-20 MHz 5-20 MHz

Data rate Up to 2Mbps 20 Mbps or more

Access Wideband CDMA

Multi-carrier – CDMA or OFDM(TDMA)

FEC Turbo-codes Concatenated codes

Switching Circuit/Packet Packet

Specifications 3G 4G

Data Throughput: Up to 3.1mbps 3to5mbps but potential estimated at a range of 10 to300 mbps.

Peak Upload Rate: 50 Mbit/s 50 Mbit/s

Peak Download Rate:

100Mbit/s 1Gbit/s

Conclusion• Mobility is a double edged sword• Degrades HSPA services, e.g. throughput• Improves fairness in bandwidth allocation among users and traffic

flows• Communication characteristics in HSPA transitional regions are

very complicated

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