@TechReport{	  it:2007-016,
  author	= {Erik Nordstr{\"o}m and Per Gunningberg and Christian
		  Rohner and Oskar Wibling},
  title		= {A Cross-Environment Study of Routing Protocols for
		  Wireless Multi-hop Networks},
  institution	= {Department of Information Technology, Uppsala University},
  department	= {Division of Computer Systems},
  year		= {2007},
  number	= {2007-016},
  month		= apr,
  abstract	= {We study ad hoc routing protocol mechanisms that impact
		  the performance during and after periods of connectivity
		  change. Our evaluation procedure is facilitated by using a
		  structured and tool-supported approach, combining real
		  world experiments with simulation and emulation. This
		  method enables us to find performance-critical time regions
		  in our traces. Our analysis shows that performance is
		  largely determined by how accurately a protocol senses
		  connectivity in these regions. Inaccurate sensing can
		  seriously affect the performance of the protocol, even
		  after the critical regions. We identify three significant
		  problems with sensing that we call
		  \emph{Self-interference}, \emph{TCP backlashing} and
		  \emph{Link cache poisoning}. We discuss their effect on the
		  design of sensing mechanisms in routing protocols and
		  suggest how the protocols can be made more robust.}
}