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2 - Broadband access networks: current and future directions

from Part I - Enabling technologies

Published online by Cambridge University Press:  05 October 2012

By
Abu (Sayeem) Reaz ,
Lei Shi  and
Biswanath Mukherjee
Edited by
Byrav Ramamurthy ,
George N. Rouskas  and
Krishna Moorthy Sivalingam
Abu (Sayeem) Reaz
Affiliation:
University of California-Davis, USA
Lei Shi
Affiliation:
University of California-Davis, USA
Biswanath Mukherjee
Affiliation:
University of California-Davis, USA
Byrav Ramamurthy
Affiliation:
University of Nebraska, Lincoln
George N. Rouskas
Affiliation:
North Carolina State University
Krishna Moorthy Sivalingam
Affiliation:
Indian Institute of Technology, Madras
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Summary

Abstract: Internet users and their emerging applications require high-data-rate access networks. Today's broadband access technologies – particularly in US – are Digital Subscriber Line (DSL) and Cable Modem (CM). But their limited capacity is insufficient for some emerging services such as IPTV. This is creating the demand for Fiber-to-the-X (FTTX) networks – typically employing Passive Optical Network (PON) – to bring the high capacity of fiber closer to the user. Long-Reach PON can reduce the cost of FTTX by extending the PON coverage using Optical Amplifier and Wavelength-Division-Multiplexing (WDM) technologies. Since Internet users want to be untethered (and also mobile), whenever possible, wireless access technologies also need to be considered. Thus, to exploit the reliability, robustness, and high capacity of optical network and the flexibility, mobility, and cost savings of wireless networks, the Wireless-Optical Broadband Access Network (WOBAN) is proposed. These topics are reviewed in this chapter.

Introduction

An access network connects its end-users to their immediate service providers and the core network. The growing customer demands for bandwidth-intensive services are accelerating the need to design an efficient “last mile” access network in a cost-effective manner. Traditional “quad-play” applications, which include a bundle of services with voice, video, Internet, and wireless, need to be delivered over the access network to the end-users in a satisfactory and economical way. High-data-rate Internet access, known as broadband access, is therefore essential to support today's and emerging application demands.

Type
Chapter
Information
Next-Generation Internet
Architectures and Protocols
 , pp. 27 - 41
Publisher: Cambridge University Press
Print publication year: 2011

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