MOBILE NETWORK

 4G or LTE?

LTE stands for "Long Term Evolution" – it's a radio access technology to deliver terribly high speeds. 4G may be a commonplace in Mobile Network Technology and stands for "Fourth Generation"-the latest when 2G and 3G which provides you a quicker and made net expertise. With 4G LTE hi-speeds, you'll notice an apparent distinction whereas downloading files, doing video-chat, taking part in multiplayer games or whereas viewing HD videos on-line.



what is the distinction between GPRS, EDGE, 3G and 4G?

a) GPRS: refers to a service on the 2G network that gives basic knowledge up to 56kbps (similar to dial-up speeds)

b) EDGE: it's a a pair of.5G technology. associate sweetening of the 2G technology that provides higher knowledge transfer rates compared to GPRS (the fail 2G).The speeds will go up to a hundred and forty four Kbps

c) 3G: 3G technology provides quicker / higher knowledge transfer rates compared to the 2G network (EDGE & GPRS).This technology in theory offers speeds between 1-21 Mbps.

d) 4G: This technology rides on LTE platform and is that the latest within the world of mobile knowledge transfer. it's following generation of mobile communications. presently it's the foremost advanced technology on the market. Theoretical knowledge downlink speeds vary between 2-100 Mbps.

 Fourth generation wireless system is a packet switched wireless system with wide area coverage and high throughput. It is designed to be cost effective and to provide high spectral efficiency . The 4g wireless uses Orthogo

Fourth generation wireless system is a packet switched wireless system with wide area coverage and high throughput. It is designed to be cost effective and to provide high spectral efficiency . The 4g wireless uses Orthogonal Frequency Division Multiplexing (OFDM), Ultra Wide Radio Band (UWB),and Millimeter wireless. Data rate of 20mbps is employed. Mobile speed will be up to 200km/hr.The high performance is achieved by the use of long term channel prediction, in both time and frequency, scheduling among users and smart antennas combined with adaptive modulation and power control. Frequency band is 2-8 GHz. it gives the ability for world wide roaming to access cell anywhere.

4g wireless systems abstract

Wireless mobile communications systems are uniquely identified by "generation designations. Introduced in the early 1980s, first generation (1G) systems were marked by analog frequency modulation and used primarily for voice communications. Second generation (2G) wireless communications systems, which made their appearance in the late 1980s, were also used mainly for voice transmission and reception The wireless system in widespread use today goes by the name of 2.5G-an "in between " service that serves as a stepping stone to 3G. Whereby 2G communications is generally associated with Global System for Mobile (GSM) service, 2.5G is usually identified as being "fueled " by General Packet Radio Services (GPRS) along with GSM. In 3G systems, making their appearance in late 2002 and in 2003, are designed for voice and paging services, as well as interactive media use such as teleconferencing, Internet access, and other services. The problem with 3G wireless systems is bandwidth-these systems provide only WAN coverage ranging from 144 kbps (for vehicle mobility applications) to 2 Mbps (for indoor static applications). Segue to 4G, the "next dimension " of wireless communication. The 4g wireless uses Orthogonal Frequency Division Multiplexing (OFDM), Ultra Wide Radio Band (UWB), and Millimeter wireless and smart antenna. Data rate of 20mbps is employed. Mobile speed will be up to 200km/hr.Frequency band is 2 ]8 GHz. it gives the ability for world wide roaming to access cell anywhere.

Features:

o Support for interactive multimedia, voice, streaming video, Internet, and other broadband services

o IP based mobile system

o High speed, high capacity, and low cost per bit

o Global access, service portability, and scalable mobile services

o Seamless switching, and a variety of Quality of Service driven services

o Better scheduling and call admission control techniques

o Ad hoc and multi hop networks (the strict delay requirements of voice make multi hop network service a difficult problem)

o Better spectral efficiency

o Seamless network of multiple protocols and air interfaces (since 4G will be all ]IP, look for 4G systems to be compatible with all common network technologies, including802.11, WCDMA, Blue tooth, and Hyper LAN).

o An infrastructure to handle pre existing 3G systems along with other wireless technologies, some of which are currently under development.