In recent years we have seen a growing interest in the experimental characterizations of wireless networks among the research community and standardization bodies. There has been a proliferation of testbeds and experimental measurements devised to provide "actual" performance evaluation of different technological solutions. Both analytic and simulation-based approaches have been found to be limited, because of simplifications in the modeling of both wireless protocols and the error-prone wireless channel.

However, there are several problems which arise even when experimentally characterizing wireless networks. First, each test represents the interaction between vendor-specific hardware and an experiment-specific environment. The reproducibility of the experiments and the comparison between experiments carried out in different labs, with different equipment and different configurations is a critical issue. Second, each piece of wireless equipment could hide some vendor-specific, unexpected and undisclosed behavior. These extensions, devised to give the vendor a competitive advantage, may impact the generality and significance of any experimental results. Third, the evaluation of network performance in some situations requires sophisticated experimental settings or statistics, which are not available to all researchers.

In this workshop we would like to solicit short 6-page papers that report on experiences obtained from operational wireless experiments in testbeds.

• operational experience of the performance of wireless networks

• challenges in wireless measurements

• experimental (in)validation of assumptions in a wireless environment

• metrics in a wireless network for performance evaluation or troubleshooting

• experience building/designing wireless networks

• descriptions of tools for building/managing wireless testbeds

• techniques for scaling testbeds

• techniques for improving the repeatability of tests

• techniques for validating and comparing the results from wireless testbeds

• methods for simplifying experiment setup and reconfiguration

• mobility pattern implementation and validation

Paper submissions will be handled electronically via EasyChair. Authors should prepare a PDF or a PostScript version of their full paper. Papers must be no longer than 6 double-column pages, font size not smaller than 11 points, using the standard IEEE format.

The workshop proceedings will be listed in the IEEEXplore and IEEE digital library.

09:00-10:00

Welcome and keynote

10:00-10:30

Coffee Break

10:30-12:00

First session

• Programmable active emulation of wireless systems - A DVB-RCS Example. Mathieu Gineste and Johan Garcia.
• An Experimental Investigation of VoIP and Video Streaming over Fixed WiMAX. Kostas Pentikousis, Esa Piri, Jarno Pinola and Frerk Fitzek.
• Effect of 802.11 Adaptive Exponential Backoffs on the Fluidity of Downlink Flows in Mesh Networks. Adel Aziz, Roger Karrer and Patrick Thiran.

12:00-13:30

Lunch

13:30-15:00

Second session

• The Effect of Using Directional Antennas on Adjacent Channel Interference in 802.11a: Modeling and Experience With an Outdoors Testbed. Vangelis Angelakis, Stefanos Papadakis, Nikos Kossifidis, Vasilios Siris and Apostolos Traganitis.
• Collecting Broken Frames: Error Statistics in 802.11b/g Links. Paul Fuxjäger and Fabio Ricciato.
• Energy and Link Measurements for Mobile Peer2Peer Communication among Mobile Phones using IEEE802.11. Morten V. Petersen, Gian Paolo Perrucci and Frank Fitzek.

15:00-15:30

Coffee Break

15:30-16:30

Third session

• Analysis and Detection of Bottlenecks via TCP Footprints in live 3G Networks. Phlipp Svoboda, Fabio Ricciato and Markus Rupp.
• Spurious TCP Timeouts in 802.11 Networks. David Malone, Douglas Leith, Anshuman Aggarwal and Ian Dangerfield.

16:30

Workshop Close

Registration and local information can be found on the WiOpt Website.

Workshop Chairs:

Ilenia Tinnirello (Univ. of Palermo)
David Malone (Hamilton Institute)