4g technology


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fourth generation mobile communications technology


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Presentation Transcript

4G Technology :

4G Technology Presented by Sitta Teja 07r91a05a0

4G Definition:

4G Definition 4G is not one defined technology or standard, but rather a collection of technologies and protocols aimed at creating fully packet-switched networks optimized for data. 4G networks are projected to provide speeds of 100 Mbps while moving and 1 Gbps while stationary. Fourth Generation Cellular Communication (4G) 4G

Evolution of Data Standards:

Evolution of Data Standards The 1G cellular telephone system divided cities into small cells. This division allowed extensive frequency reuse across a city, allowing millions to use cell phones simultaneously. 1G cell phone technology encompassed analog standards introduced in the 1980s and continued until replaced by 2G digital cell phones. 4G 3G 2G 1G First Generation Cellular Communication (1G)

Evolution of Data Standards:

Evolution of Data Standards Second Generation Cellular Communication (2G) 2G digital technologies can be divided into two standards: TDMA (Time Division Multiple Access) - GSM: Originally from Europe but used worldwide - iDEN: Proprietary network used by Nextel in the US - PDC: Used exclusively in Japan CDMA (Code Division Multiple Access) - IS-95: Commonly referred to as CDMA and used in the Americas and parts of Asia 4G 3G 2G

Evolution of Data Standards:

Evolution of Data Standards Third Generation Cellular Communication (3G) 3G networks provide the ability to transfer voice data and non-voice data (music downloads, emails and instant messaging) over the same network simultaneously . 3G networks deliver broadband capacity and support greater numbers of voice and data customers at lower incremental costs than 2G . Standards: - W-CDMA : Wideband Code Division Multiple Access - EVDO : Evolution-Data Optimized 4G 3G


Overview Where are we? Where do we Want to go? 3G vs 4G 4G Process Challenges

Where are we?:

Where are we? Hyper Lan- set of wireless Lan 1G-First Generation Speech 2G-Second Generation SMS , MMS CDMA , GPRS , EDGE Voice Mail 3G-Third Generation Wireless Internet Video Calling Mobile TV

Where do we Want to go? :

Where do we Want to go? High transfer rate Internet access any where Ability to move around with the same IP address Utilization of Smart antennas High resolution Mobile TV

Representative Wireless Standards:

Representative Wireless Standards GSM/TDMA Time Division Multiplexing based access CDMA Code Division Multiplexing based access OFDM Orthogonal Frequency Division Multiplexing

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Technology 3G 4G Data Transfer Rate 3.1MB /sec 100MB/sec Internet services Broadband Ultra Broadband Mobile -TV Resolution Low High Bandwidth 5 - 20 MHz 100 +MHz Frequency 1.6- 2 GHZ 2 – 8 GHz Network Architecture Wide Area Network Hybrid Network 3G Vs 4G

Features of 4G Networks:

Features of 4G Networks 4G networks are all-IP (Internet Protocol) based heterogeneous networks This will allow users to: Select any system at any time and any where Use Multiple systems at the same time (e.g. GPS and WLANs and CDMA) A wide range of applications using only one 4G integrated terminal

Key 4G Mobility Concepts:

Key 4G Mobility Concepts Mobile IP VoIP Ability to move around with the same IP address IP tunnels Intelligent Internet Presence Awareness Technology Knowing who is on line and where Radio Router Bringing IP to the base station Smart Antennas Unique spatial metric for each transmission

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Key Technologies Required for 4G OFDMA -Time domain -Space domain -Frequency domain

Key Technologies Required for 4G:

Key Technologies Required for 4G MIMO Signal multiplexing between antennas -Smart antennas Well suited to OFDM

4G Possibilities:

4G Possibilities Enhanced Mobile Gaming 4G 3G 2G 1G 0G Experience enhanced wireless capabilities that deliver mobile gaming interaction with latency less than five milliseconds. Play online multiplayer games while traveling at high speeds or sitting outside.

4G Possibilities:

4G Possibilities Personal Media Repository Create a personal media repository that can be accessed from home and on the road to view photos, watch movies and listen to your personal music collection. 4G 3G 2G 1G 0G

4G Possibilities:

4G Possibilities Virtual Presence Use hologram-generating virtual reality programs that provide an artificial presence just about anywhere. For example, decide if you want to personally respond when someone rings your front door while you are away from home. 4G 3G 2G 1G 0G

4G Possibilities:

4G Possibilities Broadband Access in Remote Locations 4G networks will provide a wireless alternative for broadband access to residential and business customers. In addition, 4G will provide the first opportunity for broadband access in remote locations without an infrastructure to support cable or DSL access. 4G 3G 2G 1G 0G


Challenges Sufficient spectrum with associated sharing mechanisms. Coverage with two technologies. Caching technology in the network and terminals. OFDM and MIMO. IP mobility. Multi-technology distributed architecture. Fixed-mobile convergence (for indoor service). Network selection mechanisms.

Summary :

Summary Mobile Intelligent Internet and multi media applications Seamless Roaming, substantially high and selectable user bandwidth, customized QoS, Intelligent and responsive user interface Mobile IP, Radio Routers, smart Antennas Continued advances and challenges from 1G -> 4G Modulation techniques, transreceiver advances, fast manipulations, user interfaces, IP tunelling and firewalls Spectrum usage, regulatory decisions, “one” standard, authentication and security, multi disciplinary co-operation Packing so much intelligence in smaller and smaller physical space, esp. User Equipment (UE) IP + WPAN + WLAN + WMAN + WWAN + any other stragglers = 4G

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