doc.: IEEE wng 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)

doc.: IEEE wng 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 wng-wng-WLAN-Local-Broadcasting-Services.ppt wng-ap-functional-requirement-initiatives-for-wlan-broadcasting.ppt

doc.: IEEE wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 3 Delivery of Internet Datagram Unicasting service –point to point delivery of datagram –Almost all of Internet services use this service. Multicasting service –point to specific multi-point delivery of datagram –needs multicasting IP addresses & routers Broadcasting service –point to non-specific multi-point delivery of datagram –causing too much traffic to the network –have been used only in the subnet

doc.: IEEE wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 4 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

doc.: IEEE wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 5 Benefits of IP Broadcasting No necessity of receiver IP address –No DHCP server. No IP address managing. No limitation of number of receivers No necessity of pre-knowledge of web site address & information request –Just listening and tuning of broadcast data like radio Less load to server and less network traffic –Sending datagram to each Access Point not to terminals No privacy problem of location information No violations to existing protocols !

doc.: IEEE wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 6 Network Configuration for IP Broadcasting AP with IP1 AP with IP2 Internet Broadcasting server 1 Broadcasting server 2

doc.: IEEE wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 7 Demo Program in Windows At the server At the client terminal

doc.: IEEE wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 8 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.

doc.: IEEE wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 9 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

doc.: IEEE wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 10 Terminal Initiation for IP 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

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

doc.: IEEE wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 12 Traffic Comparison Total Traffic Conventional Unicasting method IP Broadcasting method IP B. with Terminal Trigger Multicasting + IP B.=Multicasting No. of Terminals ( No. of APs) 8

doc.: IEEE wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 13 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

doc.: IEEE wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 14 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

doc.: IEEE wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 15 AP Functions for IP Broadcasting Ethernet or ADSL connection Controller IP address translator Data storage (optional) Wireless Transceiver New Block Existing Block Battery (optional)

doc.: IEEE wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 16 Adaptation to Wireless & Wired Network IP broadcasting can be applied to all kind of wireless network termination. –Wireless LAN, 2.3GHz Portable Internet, 3G All IP Network, Bluetooth, UWB, WLL, DSRC, Broadcasting System, etc. This technology is most efficient method for local broadcasting for the wireless network whose backbone is Internet. This technology can be also applied to router / switch for the applications of local broadcasting.

doc.: IEEE wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 17 Killer Applications of IP Broadcasting

doc.: IEEE wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 18 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)

doc.: IEEE wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 19 Local Shopping Information Services - As users pass through the street, they get the information about shopping, entertainment, restaurant nearby.

doc.: IEEE wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 20 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.

doc.: IEEE wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 21 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.

doc.: IEEE wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 22 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.

doc.: IEEE wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 23 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.

doc.: IEEE wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 24 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.

doc.: IEEE wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 25 Advertising Business Magic cap Banner ad. Just click now! W50,000 - Internet shopping and advertising business like cable TV

doc.: IEEE wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 26 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

doc.: IEEE wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 27 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.

doc.: IEEE wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 28 Further Work Standardization for IP Broadcasting protocol –Header format –Messages for announcing, triggering, etc. –Data scrambling for tariff –Existing protocol for streaming services, etc. I hope these standardization activities could be done in the newly established AP functionality SG.

doc.: IEEE wng Submission July 11-16, 2004 J.T. Oh, Hansung/J.G.Park, Samsung/J.W.Lim, RRL Slide 29 Thank you ! Contact point of authors –Jongtaek Oh, Ph.D. Professor of Hansung University, Seoul, Korea , –Joongoo Park, Ph.D. Senior Engineer, Samsung Electronics Co., LTD, Korea ,