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DESIGN AND IMPLEMENTATION OF CAMPUS WIDE WIRELESS NETWORK


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ABSTRACT

This project embarks on a solution to wireless services in a campus. It proposes a new approach to support wireless mobile internet working on a large university campus or similar environment. The architecture of the approach combines wireless local-area network technology with high-speed switching technology. The combination provides a wireless communication system with sufficient aggregate bandwidth to handle massive, synchronized movements of mobile computers. Furthermore, the approach supports optimal routing to each mobile computer without requiring modification of the networking software on mobile computers,non-mobile computers, or routers in the existing Internet. This architecture describes the design and implementation of a campus size mobile wireless network. Through a prototype implementation,we have shown that the approach is feasible.

CHAPTER ONE

BACKGROUND:

Wireless networks have significantly impacted the world, since their initial deployment. Wireless networks have continued to develop and their uses have significantly grown. Cellular phones are nowadays part of huge wireless network systems and people use mobile phones on a daily basis in order to communicate with each other and exchange information. Recently, wireless networks have been used for positioning as well, in order to enable the provision of location oriented services to the end-user. Different types of measurements available during standard network and terminal operation, mainly for resource management and synchronization purposes, can be employed to derive the user’s location. With these numerous uses of wireless network, this project will focus on resources sharing dedicated network. A professor at the University of Hawaii, Norman Abramson developed the world’s first wireless computer communication network, ALOHAnet (operational in 1971), using low-cost ham-like radios. The system included seven computers deployed over four islands to communicate with the central computer on the Oahu Island without using phone lines. WLAN hardware initially cost so much that it was only used as an alternative to cabled LAN in places where cabling was difficult or impossible. Early development included industry- specific solutions and proprietary protocols, but at the end of the 1990s these were replaced by standards, primarily the various versions of IEEE 802.11 (in products using the Wi-Fi brand name). An alternative ATM-like 5 GHz standardized technology, HiperLAN/2, has so far not succeeded in the market, and with the release of the faster 54 Mbit/s 802.11a (5 GHz) and 802.11g (2.4 GHz) standards, it is even more unlikely that it will ever succeed. In 2009 802.11n was added to 802.11. It operates in both the

2.4 GHz and 5 GHz bands at a maximum data transfer rate of 600 Mbit/s.

Most  new   routers  are  able  to  utilize  both  wireless  bands,  known   as dualband.   This  allows  data  communications  to  avoid   the  crowded 2.4 GHz    band,    which    is    also    shared    with Bluetooth devices    and microwave ovens. The 5 GHz band is also wider than the 2.4 GHz band, with more channels, which permits a greater number of devices to share the space. Not all channels are available in all regions.

A wireless local area network (WLAN) links two or more devices using some  wireless  distribution  method  (typically spread-spectrum or OFDM radio), and usually providing a connection through an access point to the wider Internet. This gives users the ability to move around within a local coverage area and still be connected to the network. Most modern WLANs are based on IEEE  802.11 standards,  marketed  under  the Wi-  Fi brand name. Wireless LANs have become popular in the home due to ease of installation, and in commercial complexes offering wireless access to their customers; often for free. New York City, for instance, has begun a pilot program to provide city workers in all five boroughs of the city with wireless Internet access. Likewise, Muritala International Airport, Lagos has free wireless internet access for passenger travelling.

STATEMENT OF PROBLEM

Most of us have become accustomed to the limitations that come with a wired network. When we want to check our email or print a report we find ourselves confined to a certain location or cramped space. In the past few years, the growing popularity of wireless communication has caught the attention of corporate, manufacturing, and academic settings. Wireless network technology has proven it can deliver the benefits of a wired network with the added benefit of computing freedom and share resources.

MOTIVATION

There is existing LAN connection but there are some features its lacking which inspired me to implement this project. There is no share printer/resource; no       dedicated     network        irregularities            etc.,    upon completion of this project, all of these drawbacks would be taken care of.

AIMS AND OBJECTIVES

The aim of this project is to design a dedicated wireless local area network (WLAN) , for file and printer sharing over the network. To achieve this, there are steps to take, which are: installation of wireless router, setup the router and preference, installation of printer and integrate the printer to the wireless router.

PURPOSE OF THE STUDY

  • To save cost of buying printer machine for each
  • Mobility and flexibility, which is any eligible staff moves around with his /her laptop, can still print file within the coverage

 SIGNIFICANT OF STUDY

The important of this project are many but few will be mentioned. Firstly, let consider that in department of School of Science and Technology every workstation required printer machine which will cost the school huge among of money, cost of maintenance and occupy more space. But, by the time this project will be implement a printer machine can be share over a dedicated wireless local area network for department of school of Science and Technology.

Definition of Terms

ROUTER:

It is a specialized network device that determines the next network point to which to forward a data packet toward its destination.

Internet Protocol Address (IP ADDRESS):

It is a numerical label assigned to each device (e.g., computer, printer) participating in a computer network that uses the Internet Protocol for communication. An IP address serves two principal functions: host or network interface identification and location addressing. Its role has been characterized as follows: “A name indicates what we seek. An address indicates where it is. A route indicates how to get there.

PROTOCOL:

It is a set rule governing how to communicate over a network

DUALBAND:

It is a communication device (especially a mobile phone) that supports two radio frequency bands.

RADIO MODEMS:

These are radio transceivers for serial data communications. They connect to serial ports RS232, RS422/485 and transmit to and receive signals from other matching radio (point to point) or radios (multi drop) network. Wireless Radio Modems are designed to be transparent to the systems they operate within.

NETWORK SWITCH:

This is a computer networking device that connects devices together on a computer network, by using a form of packet switching to forward data to the destination device. A network switch is considered more advanced than a (repeater) hub because a switch will only forward a message to one or multiple devices that need to receive it, rather than broadcasting the same message out of each of its ports.

HUB

It is a device for connecting multiple Ethernet devices together and making   them   act   as    a    single network    segment.    It    has   multiple input/output (I/O) ports, in which a signal introduced at the input of any port appears at the output of every port except the original incoming.

 NETWORK BRIDGE:

It is a network device that  connects  multiple  network  segments.  In  the OSI model bridging acts in the first two layers, below the network layer. There are four types of network-bridging technologies: simple bridging; multiport bridging; learning, or transparent bridging; and source route bridging.

NETWORK ANTENNA:

It is an electrical device which converts electric currents into radio waves, and vice versa. It is usually used with a radio transmitter or radio receiver. In transmission, a radio transmitter supplies an electric current oscillating at radio frequency (i.e. high frequency AC) to the antenna's terminals,  and  the  antenna  radiates  the  energy  from   the  current   as electromagnetic waves (radio waves). In reception, an antenna intercepts some of the power of an electromagnetic wave in order to produce a tiny voltage at its terminals that is applied to a receiver  to     be amplified. An antenna can be used for both transmitting and receiving.

IEEE (Institute of Electrical and Electronics Engineers): This is a professional association with its corporate office in New York City and its operations center in Piscataway, New Jersey. It was formed in1963 from the amalgamation of the American Institute of Electrical Engineers and the Institute of Radio Engineers. Today it is the world's largest association of technical professionals with more than 400,000 members in chapters around the world. The standard upheld for the design of the project was constituted by the professional body called the IEEE standard.

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