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WIDE Client & Server

WIDE Client & Server. Sinan IŞIK M. Yunus DÖNMEZ isiks@boun.edu.tr - donmezme@boun.edu.tr NETLAB. Outline. WIDE Concept Application Areas WIDE Prototype Test Environment Test Results Conclusion. WIDE Concept. Islands of data or small discontinuous data cells

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WIDE Client & Server

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  1. WIDE Client & Server Sinan IŞIK M. Yunus DÖNMEZ isiks@boun.edu.tr - donmezme@boun.edu.tr NETLAB

  2. Outline • WIDE Concept • Application Areas • WIDE Prototype • Test Environment • Test Results • Conclusion

  3. WIDE Concept • Islands of data or small discontinuous data cells • Fast delivery of popular data to multiple recipients • Minimal user intervention, auto update

  4. Application Areas • Campus • Course Notes, Announcements • Shopping Mall, Exhibition Centers • Discounts, Location, Detailed Information • Traffic Lights • Local Information, maps, road conditions, shop locations • Stock Markets • Stock Prices, News • Cinema • Movie fragments, Critics, Information

  5. Isolated System Cluster LAN/WAN Remote Server Controller Internet Gateway PSDN Sit-through WIDE Cluster Controller ”Drive-through LAN Walk-through WIDE Walk-through WIDE WIDE WIDE Network

  6. Possible System Architectures

  7. System Components • WIDE Servers (WIS) • WIDE Cluster Controller (WICC) • WIDE Clients (WIC) • WIDE Access Points (WIAP)

  8. Service Scenario • WIC gets an IP address from WIS (DHCP) • IPv6 Seamless autoconfiguration, Mobile IP • WIS query UPD (User Profile Database) in WICC • Authentication • Requests • Updates

  9. Data Communication • UDP • IP Broadcasting • IP Multicasting • Data Carousel • Channels • Point-to-point • Broadcast • Multicast

  10. Channels • Broadcast Channel (BCH) • Uplink Authentication Channel (UACH) • Downlink Authentication Channel (DACH) • Uplink Request Channel (URCH) • Downlink Request Channel (DRCH) • Data Channels (DCH)

  11. Communication Cycle 1 3 6 9 1 BCH 2 DCH-1 DCH-N 4 UACH 5 DACH 7 URCH 8 DRCH Authentication Period Data Period Request Period Index Period Index Period 1. Index Frames4. Authentication Request Packet7. Data Request Packet 2. Data Packets5. Authentication Notification Packet8. Request Notification Packet 3. Authentication Start Probe6. Request Start Probe9. Request End Probe

  12. Database Support • WICC • User Profile, Authentication... • WIS • Table of Contents, Data items... • WIC • Table of Contents, Data items...

  13. Table of Contents

  14. Requests • Requesting a data item • TOC • Receiving a data item • Data threads • Rerequesting (Partial download) • Server stops delivery • Roaming out of Service Area.

  15. Server Side Operations • Data Threads • Ready Item Queue (RIQ) • Data size • Thread ID • File ID • The number of packets • Scheduler Thread

  16. Communication Cycle • Communication Slot (CS) • Partitioning • Index Preparation • Data Delivery (Carousel) • Authentication • Request

  17. Test Environment • Server • P4, 1.6 GHz, 512 MB RAM • Clients • C1:PIII • C2:PII • C3:Celeron • 3COM PCMCIA 802.11b Adapters • AP • Cisco Aironet 350 series

  18. Test Parameters • Data Size • 100 KB,500 KB, 1000 KB • Number of Clients • Number of requests (1,2,3) • DBDP(Delay Between Data Packets) • 1 ms • Packet Size #Packets • 1500 bytes 2000,3000 packets • Request Period • 10ms, 1000ms

  19. Test Results With Interference Without Interference

  20. Test Results With Interference Without Interference

  21. Test Results

  22. Test Results Same File Different Files

  23. Test Results Same File Different Files

  24. Test Results Same File Different Files

  25. Test Results Same File Different Files

  26. Test Results Same File Different Files

  27. Test Results Same File Different Files

  28. Test Results

  29. Conclusion • Carousel + ? • Request Period • Place of Request Period • DBDP and other time periods • Partition Algorithm • ....

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