Dartmouth College Computer Science
Technical Report series
TR search TR listserv
|By author:||A B C D E F G H I J K L M N O P Q R S T U V W X Y Z|
|By number:||2017, 2016, 2015, 2014, 2013, 2012, 2011, 2010, 2009, 2008, 2007, 2006, 2005, 2004, 2003, 2002, 2001, 2000, 1999, 1998, 1997, 1996, 1995, 1994, 1993, 1992, 1991, 1990, 1989, 1988, 1987, 1986|
Most research on ad-hoc wireless networks makes simplifying
assumptions about radio propagation. The ``Flat Earth'' model of the
world is surprisingly popular: all radios have circular range, have
perfect coverage in that range, and travel on a two-dimensional plane.
CMU's ns-2 radio models are better but still fail to represent
many aspects of realistic radio networks, including hills, obstacles,
link asymmetries, and unpredictable fading. We briefly argue that key
``axioms'' of these types of propagation models lead to simulation
results that do not adequately reflect real behavior of ad-hoc
networks, and hence to network protocols that may not work well (or at
all) in reality. We then present a set of 802.11 measurements that
clearly demonstrate that these ``axioms'' are contrary to fact. The
broad chasm between simulation and reality calls into question many of
results from prior papers, and we summarize with a series of
recommendations for researchers considering analytic or simulation
models of wireless networks.
For more information related to this project see
Bibliographic citation for this report: [plain text] [BIB] [BibTeX] [Refer]
Or copy and paste:
David Kotz, Calvin Newport, and Chip Elliott, "The mistaken axioms of wireless-network research." Dartmouth Computer Science Technical Report TR2003-467, July 2003.
Notify me about new tech reports.
Search the technical reports.
To receive paper copy of a report, by mail, send your address and the TR number to reports AT cs.dartmouth.edu
Copyright notice: The documents contained in this server are included by the contributing authors as a means to ensure timely dissemination of scholarly and technical work on a non-commercial basis. Copyright and all rights therein are maintained by the authors or by other copyright holders, notwithstanding that they have offered their works here electronically. It is understood that all persons copying this information will adhere to the terms and constraints invoked by each author's copyright. These works may not be reposted without the explicit permission of the copyright holder.
Technical reports collection maintained by David Kotz.