1. David Goldenberg

2. Network resources include Energy and Space We have developed the first algorithms leveraging node mobility to improve the communication capabilities of ad-hoc networks Using Mobility to Improve Communication in Ad Hoc Network Energy conservation is crucial for many applications of ad-hoc networks The longer a sensor network can operate, the more data it can collect Space becomes an important commodity in broadcast networks In a room filled with people, more can be said if everyone speaks quietly

3. Inefficiencies in Multi-Hop Networks A interference (d) > πd 2 Shorter hops reduce interference and increase throughput (Hou, Li ’86) S D S D VS Paths are not straightStraight paths are better P transmit (d) = a+bd   2<  <6 Shorter hops incur less power usage S D even pathseven better even paths - even better

4. Use new tools developed here at Yale: Rendezvous with “Stingy” routing Fixing Inefficiencies with Mobility rule 1 rule 2 Local rules leading to improvement of global network function Rule 1: Network that autonomously adapts and “learns” to better serve communication demands: long-term distributed DB Rule 2: Network that optimizes itself for the single purpose of communication: “search and monitor” sensor network

5. Long Term Relevance Possibilities with formation of arbitrary patterns Novel approach: The network as clay, to be molded by communication through routing Intelligent adaptive networks that operate independently of human control Long term deployments, Covert deployments with requirements for minimal noise Mobility is useful in addressing the most important issues in ad-hoc wireless Power consumption, Capacity, Robustness, Intrusiveness Mobility is even more practical and enabling of useful applications when it is controlled locally THANK YOU FOR LISTENING