1. U NIVERSITY OF M ASSACHUSETTS, A MHERST Department of Computer Science Vision: A Robust Architecture for a Diverse Mobile Wireless Internet

2. U NIVERSITY OF M ASSACHUSETTS A MHERST Department of Computer Science 2 Why mobility/wireless important? 3B cellphones vs. 600M PCs in 2008 Cellular devices primary access for 3B Sensor deployments growing rapidly 10B+ embedded devices by 2015 Cognitive radios expected to grow INTERNET Wireless Edge Network Wireless Edge Network INTERNET ~600M server/PC’s, ~100M laptops/PDA’s ~1B servers/PC’s, 10B notebooks, PDA’s, cell phones, sensors Wireless Edge Network Wireless Edge Network ~2015

3. U NIVERSITY OF M ASSACHUSETTS A MHERST Department of Computer Science 3 Why a new architecture? Disconnection problematic today Need cleaner abstractions Cellular/wireless/Internet convergence Opportunistic multiplexing (3G, WiFi, WiMAX) Unification reduces management cost Scaling to several 10B devices Accommodating the developing 3B New short-range radio applications Power-constrained network devices

4. U NIVERSITY OF M ASSACHUSETTS A MHERST Department of Computer Science 4 Architectural components 1. Disruption-tolerant network stack Hop-by-hop transport Routing under uncertainty 2. Separating names and addresses Supporting concurrent network identifiers 3. Scalable in-network storage Content addressing and routing 4. Secure authentication and access control Diverse access networks, devices, content, principals 5. Reconciling location-awareness and privacy 6. End devices based management plane 7. Power-aware protocol design 8. Virtualization for evolvability

5. U NIVERSITY OF M ASSACHUSETTS A MHERST Department of Computer Science 5 Obstacles/challenges Integrated wired and wireless Can fixed be a degenerate case of mobile? Scalable naming and content resolution Complex security/privacy model Openness vs. security New network management challenges Minimal protocol design without bloat