22-09-2012, 05:26 PM
4G Wireless Technology
4G Wireless.ppt (Size: 1,003 KB / Downloads: 27)
What is 4G?
A wireless access technology and is the successor of 3G.
Called "3G and Beyond".
Enables seamless roaming between technologies.
Plans on releasing the first commercial network in 2010.
NTT DoCoMo Company is testing 4G communication at 100 Mbps while moving, and 1 Gbps while stationary.
What's New in 4G?
Entirely packet-switched networks.
All network elements are digital.
Higher bandwidths to provide multimedia services at lower cost (up to 100Mbps).
Tight network security.
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
Features of 4G Networks (cont.)
Support interactive multimedia services: teleconferencing, wireless Internet, etc.
Wider bandwidths, higher bit rates.
Global mobility and service portability.
Low cost.
Scalability of mobile networks (>10 times the capacity of 3G).
4G Systems Challenges
To migrate current systems to 4G with the features mentioned previously, researchers are facing a number of challenges
These challenges are grouped into the following different aspects:
Accessing Different Networks:
Multimode Devices
Overlay Network
Terminal Mobility
Location Management
Handoff Management
4G Wireless.ppt (Size: 1,003 KB / Downloads: 27)
What is 4G?
A wireless access technology and is the successor of 3G.
Called "3G and Beyond".
Enables seamless roaming between technologies.
Plans on releasing the first commercial network in 2010.
NTT DoCoMo Company is testing 4G communication at 100 Mbps while moving, and 1 Gbps while stationary.
What's New in 4G?
Entirely packet-switched networks.
All network elements are digital.
Higher bandwidths to provide multimedia services at lower cost (up to 100Mbps).
Tight network security.
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
Features of 4G Networks (cont.)
Support interactive multimedia services: teleconferencing, wireless Internet, etc.
Wider bandwidths, higher bit rates.
Global mobility and service portability.
Low cost.
Scalability of mobile networks (>10 times the capacity of 3G).
4G Systems Challenges
To migrate current systems to 4G with the features mentioned previously, researchers are facing a number of challenges
These challenges are grouped into the following different aspects:
Accessing Different Networks:
Multimode Devices
Overlay Network
Terminal Mobility
Location Management
Handoff Management