1. ORBIT NSF site visit - July 14, 20041 Location-based Services & data propagation in ORBIT Henning Schulzrinne Dept. of Computer Science

2. ORBIT NSF site visit - July 14, 20042 Location-based services Finding services based on location physical services (stores, restaurants, ATMs, …) electronic services (media I/O, printer, display, …) not covered here Using location to improve (network) services communication incoming communications changes based on where I am configuration devices in room adapt to their current users awareness others are (selectively) made aware of my location security proximity grants temporary access Privacy rules for access to context data

3. ORBIT NSF site visit - July 14, 20043 Location-based services Based on open and standard protocols SIP and GEOPRIV for location information Planning to use outdoor testbed for interpolation- based location determination Merging information multiple location sensor indoor & outdoor mobile & infrastructure Engaged with privacy policy work in IETF subscription policy event generator policy subscriber filter rate limiter change to previous notification? for each watcher subscriber (watcher) SUBSCRIBE NOTIFY

4. ORBIT NSF site visit - July 14, 20044 Content distribution: network to mobile Deliver web content to roaming user deliver matching documents “weather?” multicast query for all documents web cache 7DS node

5. ORBIT NSF site visit - July 14, 20045 Mobile to Internet Email service interface propagate to other pedestrians 7DS MTA encrypt message; encrypt headers with 7DS public key

6. ORBIT NSF site visit - July 14, 20046 ORBIT testbed On-going work on Linux implementation for n2m and m2n at Columbia Integration of low-speed (3G/pager) and high-speed networks Will port to testbed as facilities become available Planning to use ORBIT PCs at Columbia for testing and local deployment Later, test in outdoor facility with real data

7. ORBIT NSF site visit - July 14, 20047 ORBIT outdoor implementation

8. ORBIT NSF site visit - July 14, 20048 Pagers as feedback channel MTA PL-900 POCSAG SNPP (RFC 1861) FLEX 1600-6400 b/s “message 42 delivered” remove from cache