2. doc.: IEEE 802.11-04-0700-00-0wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 1 AP Functions for IP Broadcasting Jongtaek Oh (Hansung University) Joongoo Park (Samsung Electronics Co.) Jaewoo Lim (RRL)

3. doc.: IEEE 802.11-04-0700-00-0wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 2 Contents Limitations of Internet services IP broadcasting for wireless LAN Killer applications for IP broadcasting Further work Related Doc.s - 11-03-0739-00-0wng-wng-WLAN-Local-Broadcasting-Services.ppt - 11-04-0433-00-0wng-ap-functional-requirement-initiatives-for-wlan-broadcasting.ppt

4. doc.: IEEE 802.11-04-0700-00-0wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 3 Basic Limitations of Internet Services Necessity of unique IP address –Lack of IP addresses to be assigned –Difficulty of managing IP addresses, especially for mobile unit Client-server model : server access & request –Necessity of pre-knowledge of web site address –Every time click is needed to request information. –So much load to server as increasing number of users

5. doc.: IEEE 802.11-04-0700-00-0wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 4 Network Configuration for IP Broadcasting AP with IP1 AP with IP2 Internet Broadcasting server 1 Broadcasting server 2

6. doc.: IEEE 802.11-04-0700-00-0wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 5 Demo Program in Windows At the server At the client terminal

7. doc.: IEEE 802.11-04-0700-00-0wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 6 Datagram Format & Protocol Stack Protocol ID Dest. IP addr Source IP addr UDP port No. UDP data Internet Datagram Format Application UDP IP MAC PHY Application UDP IP MAC PHY MAC PHY MAC PHY LMELME Internet Server Terminal AP Protocol Stack IP Addr.Trans.

8. doc.: IEEE 802.11-04-0700-00-0wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 7 Header Format Controls broadcasting parameters of AP –Repetition period & duration –Priority control, scrambling, etc. Type of data –Users can see interesting data only by filtering. –Terminals can use for their own purposes. Ex) SW or firmware upgrade Control flags type of data field broadcast data Simplified Payload Format for IP Broadcasting

9. doc.: IEEE 802.11-04-0700-00-0wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 8 Terminal Initiation for Broadcasting 1) Broadcasting Announcement Internet Broadcasting server 2) Req. Broadcasting 3) Req. Broadcasting 5) Data Broadcasting timer 6) Quit after time out 4) Broadcasting Data AP

10. doc.: IEEE 802.11-04-0700-00-0wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 9 Multicasting + Local Broadcasting AP with multicasting IP addr Internet Broadcasting server Multicasting router Multicasting router Multicasting router Multicasting router Req. IGMP

11. doc.: IEEE 802.11-04-0700-00-0wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 10 Traffic Comparison No. of Terminals ( No. of APs) Total Traffic Conventional Unicasting method Local Broadcasting method L. B. with Terminal Trigger Multicasting + L. B.=Multicasting 8

12. doc.: IEEE 802.11-04-0700-00-0wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 11 IPSec in Brief IPSec protocol –Authentication Header (AH) proof of data origin on received packets, data integrity, anti-replay protection –Encapsulation Security Payload (ESP) functions of AH + data confidentiality IPSec mode –Transport mode : end to end protection –Tunnel mode : for VPN

13. doc.: IEEE 802.11-04-0700-00-0wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 12 IPSec for Secure IP Broadcasting between Servers and APs Requirements –end to end protection in Internet domain –As simple as possible IPSec protocol + IPSec mode –ESP with transport mode for IP broadcasting IP header ESP header data field ESP trailer encrypted authenticated Simplified IP Datagram Format

14. doc.: IEEE 802.11-04-0700-00-0wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 13 Killer Applications of IP Broadcasting

15. doc.: IEEE 802.11-04-0700-00-0wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 14 Simple Bridging between Broadcasting and Internet Connection * Special menu of nearby restaurant - Sea food spaghetti - Herb bibimbab - Italian pizza - Hot cold noodle click! from just seeing into interactive service Korean Restaurant Special price W5,000 Broadcast Text, Graphic, Image, Sound, even Alerting data - Broadcasting service + Interactive communication service with unique communication network (WLAN)

16. doc.: IEEE 802.11-04-0700-00-0wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 15 Local Shopping Information Services - As users pass through the street, they get the information about shopping, entertainment, restaurant nearby.

17. doc.: IEEE 802.11-04-0700-00-0wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 16 Local Geographic Information Services 1F1F Shop Cafe Toilet Telephone No. Parking lot Click & move to web site automatically - The user can get the geographic information without any prior knowledge about where one is.

18. doc.: IEEE 802.11-04-0700-00-0wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 17 Disaster Relief Guiding Services FIRE EXIT ESCAPE ! - With data storage and battery equipped in the AP, emergency information can be broadcast for a while, without power supply and network connection. - User terminal can be awakened with alerting signal.

19. doc.: IEEE 802.11-04-0700-00-0wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 18 Local Traffic Information Services for Drivers repeating - Broadcasting service for local traffic information. No click for requesting data is needed. - The data should be provided to the drivers at least once within the radio zone. So repeated broadcasting is necessary with internal data storage of AP. - Mobility with WLAN is already approved with experiment by several operators.

20. doc.: IEEE 802.11-04-0700-00-0wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 19 Data Throughput Measurement for 11g in Mobile Environment - Vehicle speed : 160km/h, AP ANT Height : 1m - Ref. paper Will be published in IEICE Tr. Comm.

21. doc.: IEEE 802.11-04-0700-00-0wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 20 Sight Seeing Information Service Bus StopSeoul City Tour Nearby historic spot is …. This statue is... Tour Bus - Informational guidance according to the geographic spot and article. - It consists of text, image, and sound.

22. doc.: IEEE 802.11-04-0700-00-0wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 21 Advertising Business Magic cap Banner ad. Just click now! W50,000 - Internet shopping and advertising business like cable TV

23. doc.: IEEE 802.11-04-0700-00-0wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 22 Private Radio Broadcasting Services 2 strikes & 3 balls There is a missing child. - Private radio station using WLAN - With just one AP, text, audio, and moving picture can be broadcast to unlimited number of users within radio zone. Seoul Sports Complex

24. doc.: IEEE 802.11-04-0700-00-0wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 23 Education Services Korean Peninsula - The same contents including broadband data can be provided to students in the class. - Just broadcasting can serve this service; point-to-point delivery wastes so much radio bandwidth.

25. doc.: IEEE 802.11-04-0700-00-0wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 24 Further Work Standardization for IP Broadcasting protocol –Header format –Messages for announcing, triggering, etc. –Data scrambling for tariff –Existing protocol for streaming services, etc.

26. doc.: IEEE 802.11-04-0700-00-0wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 25 Thank you ! Contact point of authors –Jongtaek Oh, Ph.D. Professor of Hansung University, Seoul, Korea. +82 16 232 6172, jtoh@hansung.ac.kr –Joongoo Park, Ph.D. Senior Engineer, Samsung Electronics Co., LTD, Korea +82 16 9530 5114, t9park@samsung.com