4G - Mobile communications
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Transcript of 4G - Mobile communications
Where are we?
Where do we Want to go?
3G vs 4G
4G Process
Challenges
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
High transfer rate
Internet access any where
Ability to move around with the same IP address
Utilization of Smart antennas
High resolution Mobile TV
GSM/TDMA Time Division Multiplexing based access
CDMA Code Division Multiplexing based access
OFDM Orthogonal Frequency Division Multiplexing
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
What is 4G?What is 4G? The “twelve views” of 4G
Is that your final answer?
Service provider
s
Cost reductio
n
User service
s
Wireless
wireline
Technology trends
New network
New air interfac
e
Wireless
Internet
4G will not
exist
Higher bit rates
White space
Strictgeneratio
n
Wireless
wireline
New network
New air interfac
e
Technology trends
Cost reductio
n
Higher bit
rates
User services
White space
Service provider
s
Wireless
Internet
SCENARIO AHEADSCENARIO AHEAD
HOT SPOTS
Public Networks/Public Networks/InternetInternet
Converged servicesConverged services
PUBLICTRANSPORT
VEHICLE
WORK
OUTDOORS
RURAL
HOME
Seamless connectivity to all networks,
applications, & services
Anytime Anywhere
Everything is IP
Machine-to-machine transmission
-Sensors (measure parameters)
-Tags (read/write equipment)
Consented to achieve 500bit/s/Hz/km2 -HSDPA (High Speed Download Packet Access)
-MIMO
WWI agreed peak rates of 100Mbit/s in mobile
situations1Gbit/s in nomadic/pedestrian situations
Service Evolution and Service Evolution and ConsensusConsensus
4G Process
To operate large number of users - Parent coverage - Pico-cell coverage
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
Key Technologies Required for 4G
OFDMA
-Time domain
-Space domain
-Frequency domain
Key Technologies Required for 4G MIMO
Signal multiplexing between antennas
-Smart antennas
Well suited to OFDM
Key Technologies Required for 4G
Coverage Parent coverage ------ Pico-cell coverage
4G: Data Rate Facts4G: Data Rate FactsTransmission at 20 Mbps.
2000 times faster than mobile data rates.
10 times faster than top transmission rates planned in final build out of 3G broadband mobile.
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.
Life-Saving: Telemedicine
Video Conferencing
Telegeoprocessing: GIS,GPS
Better Usage of Multimedia Applications
Voice over Internet Protocol (VoIP) for IPv6
Any Queries?
Thank U