We believe that the described controlled experiment presents a worst case scenario for the WM technique. This is because our Bad client case, where the client is located on the marginal line of AP coverage, is severe and unlikely to occur in a real environment. The MAC layer capture performance of the WM technique would be much better in a WLAN environment where APs are positioned so that clients in most locations of interest can find at least one AP with good signal conditions.
Based on the results in this paper, we are currently using the WM technique to analyze the WLAN traffic in a Computer Science department environment. Some initial results can be found in 12 (12) on traffic characterization and in 11 (11) on anomaly detection. Besides characterizing WLAN usage patterns, we are using the traces for multiple APs to analyze user roaming patterns, co-channel interference and interactions between different APs. In such experiments, we expect that combining wired monitoring data, such as Inter Access Point Protocol information (IEEE Std 802.11f), with WM analysis, would give better measurement capabilities, e.g., on the roaming behavior of the mobile users and the handoff process.
We believe that our results should encourage the wireless research community to use WM techniques in many research areas, including traffic analysis, user mobility and handoff analysis, and MAC/PHY anomaly detection.