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Performance evaluation of the cache and forward link layer protocol in multihop wireless subnetworks
Descriptive
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Title
Performance evaluation of the cache and forward link layer protocol in multihop wireless subnetworks
Name
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Saleem
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Ayesha Bint
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Ayesha Bint Saleem
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author
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Raychaudhuri
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Dipankar
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Advisory Committee
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Dipankar Raychaudhuri
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chair
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Wade
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Advisory Committee
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Wade Trappe
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internal member
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Zhang
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Yangyong
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Advisory Committee
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Yangyong Zhang
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Rutgers University
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degree grantor
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Graduate School - New Brunswick
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theses
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2008
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2008-10
Language
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English
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electronic
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viii, 51 pages
Abstract
Cache aNd Forward (CNF) is a clean-slate protocol architecture for content delivery services in the future Internet. CNF is based on the concept of store-and-forward routers with large storage, providing for opportunistic delivery to occasionally disconnected mobile users and for in-network caching of content. This thesis presents the design and evaluation of a reliable link layer protocol for CNF in context of a multi-hop wireless access network scenario. The design aims to deliver files efficiently on a hop-by-hop basis as opposed to an end-to-end approach employed by TCP/IP. CNF leverages in-network storage to store an entire file before forwarding the file to the next node. If a next hop is not currently available or has low transmission quality, files may be stored at each CNF router along the path towards the destination. In addition to the link layer protocol, end-to-end transport in CNF involves packet scheduling and routing at each network node based on cross-layer observation of link speed, MAC congestion, path length, etc. An ns-2 simulation model has been developed for a multi-hop 802.11 access network with CNF routers and a reliable link layer protocol. Baseline results for first-come-first-serve (FCFS) scheduling and shortest path routing show significant capacity gains for CNF relative to TCP for a variety of network topologies and channel models. For example, for a 49 node network with a grid topology, maximum achievable throughput with CNF was found to be 12.5 Mbps as compared to 3.9 Mbps for TCP for a scenario in which the radio links experience short-term outages with a 5% duty cycle. Preliminary results showing the value of simple cross-layer scheduling in CNF are also given in the conclusion.
Note
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M.S.
Note
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Includes bibliographical references (p. 48-49).
Subject
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Topic
Electrical and Computer Engineering
Subject
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Topic
Data transmission systems
Subject
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Topic
Wireless communication systems
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Graduate School - New Brunswick Electronic Theses and Dissertations
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rucore19991600001
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http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.17562
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ETD_1307
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NjNbRU
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doi:10.7282/T3FJ2H2H
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ETD graduate
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Rights
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The author owns the copyright to this work.
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Copyright protected
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Open
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Ayesha Saleem
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Copyright holder
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Rutgers University. Graduate School - New Brunswick
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Non-exclusive ETD license
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Author Agreement License
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I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
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