1. Milenko Petrovic Middleware Systems Research Group (MSRG) Connections June 2005 Technological Advances Enabling Body Area Networks True micro-computers Embeddable computers Attaching a microcomputer to one or more sensors Wirelessly connected

2. Milenko Petrovic Middleware Systems Research Group (MSRG) Connections June 2005 Personal Assistant Therapist

3. Milenko Petrovic Middleware Systems Research Group (MSRG) Connections June 2005 MicroToPSS: Middleware for Body Area Networks Based on Publish/Subscribe Communication model Declarative interface (low-level), maps to GUI (high level) Easy integration of new sensors (sensors/actuators described in their capabilities, events they generate, commands they receive) Application-transparent support for mobility (reconfigurability) PAT-to-PAT, PAT-to-PATnet interactions Homogeneous interface: event-based (sensor events, PAT events, system events, high-level events) Application can control/read sensors and interact with PAT, regardless of where the PAT/sensors are located in the network: (when temp > 37.5C signal high temp alert; when high temp and heart rate high signal user alert)

4. Milenko Petrovic Middleware Systems Research Group (MSRG) Connections June 2005 MicroToPSS Content Based Routing Message Transport Abstraction Layer Event Processor Subscription Processor Advertisement Processor Content Route Optimizer MoteRFBluetoothLocalSerial Reliable Message Transport Fault Tolerant Message Transport

5. Milenko Petrovic Middleware Systems Research Group (MSRG) Connections June 2005 Hardware Characteristics (Berkeley Motes) Up to 20kbps over 5-30m 3-V lithium coin cell battery (5d at continuous, 1.5y @ 1%) 8-bit 8 MHz microcontroller http://www-bsac.eecs.berkeley.edu/archive/users/hollar-seth/macro_motes/macromotes.html