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Fourth generation wireless system is a packet switched wireless system with wide area coverage and high throughput. It is designed to be cost effective and to provide high spectral efficiency. The 4g wireless uses Orthogonal Frequency Division Multiplexing (OFDM), Ultra Wide Radio Band (UWB), and Millimeter wireless. Data rate of 20mbps is employed. Mobile speed will be up to 200km/hr
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4G - The Next Generation Wireless1
TO
ONE AND ALL
4G - The Next Generation Wireless2
4G - The Next Generation Wireless3
Introduction
4G is an initialism of the term Fourth-Generation Communications System.
A 4G system will provide an end-to-end IP solution where voice, data and streamed multimedia can be served to users on an "Anytime, Anywhere" basis at higher data rates than previous generations.
No formal definition is set as to what 4G is, but the objectives that are predicted for 4G can be summarized as follows:
4G - The Next Generation Wireless4
Introduction - cont’d
4G - The Next Generation Wireless5
ECONOMIC IMPACTS
Advantages of 4G Barriers to Progress Problems with the
Current System
Cellular provider Features
Sprint e-mail, pictures, games, music, Internet
AT&T e-mail, games, music
Verizon e-mail, pictures, games, music, Internet
Nextel e-mail, pictures, games, music, Internet
T-Mobile (Voice Stream) e-mail, pictures, games, music, Internet
Cingular text messaging
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Cellular Provider System Upgrades
4G - The Next Generation Wireless7
WIRELESS SECURITY
History Stakeholders in Wireless Security Wireless Security Issues Information Security Model
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WIRELESS SECURITY
Security Analysis – Objectives– Threats – Security Architecture
Complete Efficient Effective Extensible User-friendly
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CURRENT TECHNOLOGY
TDMA
Time Division Multiple Access
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CURRENT TECHNOLOGY
CDMA
Sending Data using Code Division Multiple Access
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CURRENT TECHNOLOGY
CDMA
Receiving Data using Code Division Multiple Access
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4G HARDWARE
Ultra Wide Band Networks Smart Antennas
– Switched Beam Antennas Adaptive Array Antennas
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4G SOFTWARE
Software Defined Radio Packet Layer Packets
– Advantages More Flexible More Reliable Packets Proven Technology Easier to Standardize Extensible
– Disadvantages
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4G SOFTWARE
Implementation of Packets – Current System: IPv4 – Recommended System: IPv6 – Voice over IP (VoIP)
Encryption Flexibility Anti-Virus
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Conclusion
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Conclusion
Consumers demand that software and hardware be user-friendly and perform well .
The Wireless industry and the business environment are well equipped and will play a major role in the global development for years to come.
The software that consumers desire is already in wide use. The cellular telephone industry, which now includes a myriad of
wireless devices, is no exception. This is a need that demands a solution. Today’s wired society
is going wireless, and it has a problem. 4G is the answer.
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