27-02-2013, 03:08 PM
4G Definition
[attachment=52086]
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:
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
[attachment=52086]
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:
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