Page 132 - DCAP311_DCAP607_WIRELESS_NETWORKS

Wireless Networks Manmohan Sharma, Lovely Professional University

Notes Unit 8: Wireless MAN

CONTENTS

Objectives
Introduction
8.1 Meaning of Wireless MAN
8.2 Components
8.2.1 Bridges
8.2.2 Bridges versus Access Points
8.2.3 Ethernet to Wireless Bridges
8.2.4 Workgroup Bridges
8.2.5 Directional Antenna
8.2.6 Semi-directional
8.2.7 Highly Directional Antenna
8.2.8 Polarization
8.3 Summary

8.4 Keywords
8.5 Review Questions
8.6 Further Readings

Objectives

After studying this unit, you will be able to:
z z Discuss the wireless MAN

z z Explain the component of wireless MAN
Introduction

A metropolitan area network (MAN) is a computer network in which two or more computers or
communicating devices or networks which are geographically separated but in same metropolitan
city and are connected to each other are said to be connected on MAN. The limits of Metropolitan
cities are determined by local municipal corporations and we cannot define them. Hence, the
bigger the Metropolitan city the bigger the MAN, smaller a metro city smaller the MAN.

8.1 Meaning of Wireless MAN

Wireless Metropolitan Area Network (WMAN) enables you to access the Internet and multimedia
streaming services via a wireless region area network (WRAN).
These networks provide a very fast data speed compared with the data rates of mobile
telecommunication technology as well as other wireless network, and their range is also extensive.
There are following three major issues with Wireless Networks.
z z Quality of Service (QoS): One of the primary concerns about wireless data delivery is that,
like the Internet over wired services, QoS is inadequate. Lost packets, and atmospheric
interference are recurring problems wireless protocols.

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