Disruption model for Net-on-Roads

Idea of accessing broadband services from already deployed WiFi APs while travelling at vehicular speed has gained considerable popularity among the researchers. Random location of APs makes it difficult to get continuous Internet connection. As a result, a mobile node moving at vehicular speed faces periods of connections and disconnections; this intermittence is termed as "disruption". Disruption can not be completely eradicated because it arises because of random deployment of WiFi APs. However, special algorithms may be devised to "tolerate" the available disruption. As an initial step towards this final goal, we express disruption in a typical vehicular communication session as Markov model to ease future analysis. Our model is based on data obtained from different test runs across different areas of the city.