Introduction To The Latest Wireless Technologies

Introduction

Since the beginning of this millennium, there has been an unprecedental growth in broadband wireless networks. This has been attributed to high demand for wireless multimedia services such as data voice, video and the development of new wireless standards. 
This growth of wireless broadband networks is expected to gradually out place landline communication in coming years.

The Technology Enhancement In Wireless Technology

The ever-growing need for mobile internet access, interactive Services, training and entertainment, the need for a single standard seamless roaming interoperability across network and upward integration of earlier wireless network technologies are also driving factors for new developments in wireless networks.

 Generally Broadband networks [wireless] can be categorized into two groups, fixed and mobile wireless as shown in the figure:  

 

BROADBANDWIRELESS
Mobile	Fixed
3G	Wi-Fi
4G	Wimax

The two broadband mobile wireless network technologies are the Third Generation [3G] and Fourth Generation [4G] networks. The 3G Standers are defines by ITU-T, Imt-200.

Although Wi-Fi, Wimax and 3G cellular are very different from one another but they complement each other in many ways, and also competing each other in some areas as well.

Fixed Broadband Wireless Network

Fixed broadband wireless technologies can be defined as high-speed wireless networks that connect to stationary location and are intended to serve nomadic users.  Wireless friendly WI-FI and worldwide interoperability for microwave access, Wimax technologies .There are two technologies are respectively governed my IEE 802.11 and 802.16 Specifications.

Broadband mobile Wireless Network

Third Generation (3G) network started with the vision to develop a single global standard for high speed data and high quality voice services. To meet IMT-2000 (International Mobile Telecommunication-2000) standards, a system is required to provide peak data ratio of at least 200kb/sec (about 0.2 mbps). But, recent 3G releases often denoted 3.5G and 3.75G also provide mobile broadband access of several mbps to Smartphone and mobile broadband access of several mbps to Smartphones and mobile modem in laptops.

The Fourth Generation (4G)is a new Generation of wireless network intended to complement and replace the 3G Systems, in the near future. Accessing information and services and receiving a large volume of information, data, picture, video and so on, are the key feature of the 4G infrastructures.

by Varun.R.S.