4G Technology

In Official Blog, Tech-BLOG, Tech-Forum, Technical

Introduction:

ž4G stands for the fourth generation of cellular wireless standards.

žIt is a successor to 3G and 2G families of standards.

žFourth generation mobile communications systems that are characterized by high-speed data rates at 20 to 100 Mbps

Objectives of 4G Technology:

• ž4G is being developed to accommodate the QoS
• žMobile broadband access
• žMMS
• žVideo chat
• žMobile TV like HDTV
• žDigital video broadcasting
• žA data rate of at least 100 Mbit/s
• žSmooth hand off across heterogeneous networks
• žAn all IP, packet switched network.

ITU Requirement And 4G Technology:

• žBased on an all-IP packet switched network.
• žPeak data rates of up to approximately 100 Mbit/s
• žScalable channel bandwidth, between 5 and 20 MHz, optionally up to 40 MHz
• ž802.16m standardized by the IEEE (i.e. WiMAX)
• žLTE Advanced standardized by the 3GPP

  

Principles of Technology:

• žMIMO
• žOFDM/OFDMA
• žTurbo principle error-correcting codes
• žChannel-dependent scheduling
• žIP V6

Data Rates Table:

4G Candidate Systems:

• žLTE Advanced
• žIEEE 802.16m or WirelessMAN-Advanced
• ž3GPP Long Term Evolution (LTE)ž
• žMobile WiMAX (IEEE 802.16e)ž
• žUMB (formerly EV-DO Rev. C)ž
• žFlash-OFDMž
• žiBurst and MBWA (IEEE 802.20) systems

3G Vs 4G:

3G Technology:

• Predominantly voice driven – data was always add on
• Wide area cell-based
• 1800-2400 MHz
• Circuit and packet switched networks.
• Combination of existing & evolved equipment.
• Data rate (up to 2Mbps).
• Optimized antenna design, multi-band adapters
• A number of air link protocols, including IP

4G Technology:

• Converged data and voice over IP
• Hybrid – Integration of Wireless LAN (WiFi, Bluetooth) and wide area.
• Higher frequency bands 2-8 GHz
• Entirely packet switched networks.
• All network elements are digital.
• Higher bandwidth (up to 100Mbps).
• Smarter Antennas, software multi-band and wide band radios
• All IP (IPv6.0)

Features:

• žHigh usability: anytime, anywhere, and with any technology
• žSupport for multimedia services at low transmission cost
• žPersonalization
• žIntegrated services

 

Awadhesh Kumar

Jain Software Developers