29-03-2012, 03:21 PM
The Trends in Broadband Wireless Networks Technologies
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INTRODUCTION
Mobile and wireless telephony and high speed data communications have tremendously enhanced the way business is conducted since the new millennium. The technology allows employees, partners, and customers to access corporate data from almost anywhere and anytime.
FIXED BROADBAND WIRELESS NETWORKS
Fixed broadband wireless technologies can be defined as high-speed wireless networks that connect to stationary locations and are intended to serve nomadic users [4]. Wireless Fidelity (Wi-Fi) and Worldwide Interoperability for Microwave Access (WiMax) technologies are the fixed wireless technologies that are examined in this paper.
WiMax
Worldwide Interoperability for Microwave Access (WiMax) is an emerging fixed broadband wireless technology that will deliver last mile broadband connectivity in a larger geographic area than Wi-Fi. It is expected to provide coverage anywhere from one to six miles wide. Such WiMax coverage range is expected to provide fixed and nomadic wireless broadband connectivity without necessarily having a line-of-site (LOS) with a base station [12].
THE BROADBAND MOBILE WIRELESS NETWORKS
The evolution of mobile service started with the first generation (1G) networks, which was implemented based on Frequency Division Multiple Access (FDMA) and these networks were basically for voice communication. The 1G network was replaced by second-generation (2G) networks, which are mainly used for voice applications.
THIRD-GENERATION NETWORKS
Third-generation (3G) networks started with the vision to develop a single global standard for high-speed data and high-quality voice services. The goal was to have all users worldwide to use a single standard that would allow for true global roaming. It was not possible because it was realized that backward compatibility with 2G networks and frequency differences among countries were too much of a barrier to overcome, so agreement on a single 3G implementation could not be reached.
FOURTH GENERATION NETWORKS
The 4G is a new generation of wireless intended to complement and replace the 3G systems, in the near future. Accessing information anywhere, anytime, with a seamless connection to a wide range of information and services, and receiving a large volume of information, data, pictures, video, and so on, are the key features of the 4G infrastructures.
CONCLUSION
This paper examined the fixed and mobile broadband wireless networks and provides a comparative view of both technologies. There has been an unprecedented rapid growth in the demand for mobility globally, seamless communication, data services, and ubiquitous computing. Fixed broadband wireless networks are helping users meet the growing need for broadband wireless access at hotspots and beyond, while broadband mobile technologies are expected to enable broadband wireless network access for highly mobile users.
[attachment=19191]
INTRODUCTION
Mobile and wireless telephony and high speed data communications have tremendously enhanced the way business is conducted since the new millennium. The technology allows employees, partners, and customers to access corporate data from almost anywhere and anytime.
FIXED BROADBAND WIRELESS NETWORKS
Fixed broadband wireless technologies can be defined as high-speed wireless networks that connect to stationary locations and are intended to serve nomadic users [4]. Wireless Fidelity (Wi-Fi) and Worldwide Interoperability for Microwave Access (WiMax) technologies are the fixed wireless technologies that are examined in this paper.
WiMax
Worldwide Interoperability for Microwave Access (WiMax) is an emerging fixed broadband wireless technology that will deliver last mile broadband connectivity in a larger geographic area than Wi-Fi. It is expected to provide coverage anywhere from one to six miles wide. Such WiMax coverage range is expected to provide fixed and nomadic wireless broadband connectivity without necessarily having a line-of-site (LOS) with a base station [12].
THE BROADBAND MOBILE WIRELESS NETWORKS
The evolution of mobile service started with the first generation (1G) networks, which was implemented based on Frequency Division Multiple Access (FDMA) and these networks were basically for voice communication. The 1G network was replaced by second-generation (2G) networks, which are mainly used for voice applications.
THIRD-GENERATION NETWORKS
Third-generation (3G) networks started with the vision to develop a single global standard for high-speed data and high-quality voice services. The goal was to have all users worldwide to use a single standard that would allow for true global roaming. It was not possible because it was realized that backward compatibility with 2G networks and frequency differences among countries were too much of a barrier to overcome, so agreement on a single 3G implementation could not be reached.
FOURTH GENERATION NETWORKS
The 4G is a new generation of wireless intended to complement and replace the 3G systems, in the near future. Accessing information anywhere, anytime, with a seamless connection to a wide range of information and services, and receiving a large volume of information, data, pictures, video, and so on, are the key features of the 4G infrastructures.
CONCLUSION
This paper examined the fixed and mobile broadband wireless networks and provides a comparative view of both technologies. There has been an unprecedented rapid growth in the demand for mobility globally, seamless communication, data services, and ubiquitous computing. Fixed broadband wireless networks are helping users meet the growing need for broadband wireless access at hotspots and beyond, while broadband mobile technologies are expected to enable broadband wireless network access for highly mobile users.