1 / 18

Providing Group Tour Guide by RFIDs and WSNs

Providing Group Tour Guide by RFIDs and WSNs. Yu-Chee Tseng, CS.NCTU (a joint work with NTHU) (in IEEE Trans. on Wireless Comm.) ( 中華民國專利 : " 使用無線感測網路提供群組導引服務之方法及系統 ", I319947). Motivation. Traditional tour guide: personalized guiding by portable audio/mobile devices

moeshe
Download Presentation

Providing Group Tour Guide by RFIDs and WSNs

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Providing Group Tour Guide by RFIDs and WSNs Yu-Chee Tseng, CS.NCTU (a joint work with NTHU) (in IEEE Trans. on Wireless Comm.) (中華民國專利: "使用無線感測網路提供群組導引服務之方法及系統", I319947)

  2. Motivation • Traditional tour guide: • personalized guiding • by portable audio/mobile devices They do not consider tourists as a group. • Our goals: • a group guiding framework • Feasible • Low management effort • group guiding protocol • with a prototype

  3. System overview & Services Leader tracking Memberrecall Help service

  4. Group guiding services • Leader tracking • Sensors cooperate to track the locations of group leaders. • Help service • Help lost members to find their leaders. • Member recall • A leader can call his/her members. • Push message • A leader can push information to his/her members.

  5. Group guiding protocol (1/2) • How to track a group leader • a signal-strength based method by “bidding”

  6. Group guiding protocol (2/2) • Mobility management A local update is proposed to reduce update messages. A potential-based method is adopted for sensors to trace the locations of leaders.

  7. System Architecture (WSN + RFID system)

  8. Leader badge & direction board

  9. Help (Information) Center

  10. Help service & GUI

  11. Prototyping system & Member-recall

  12. Simulation results • Area: 100m*100m • Nodes: 10*10, 30*30, and 50*50 • Transmission range: 15m • Trans. Data rate: 256 kbps • Obstacles: 2*4 or 4*2 • Pkt. Loss: 0% ~ 20% • Each group has one leader and multiple members.

  13. Performance metrics • Message overhead • Tracking leader • Support group guiding services • Scalability • Length of guiding path • Routing property

  14. Message overhead & Scalability Impact of obstacles on message overhead Message overhead vs. Leader mobility

  15. Length of guiding path AEH: Avg. excess hops

  16. Response time vs. Packet loss

  17. Overall message overhead

  18. Conclusions • a feasible GROUP tour guide system • based on RFID • ease of management • Future work: • integrating with real tour information • realization in mobile devices, such as iPhone or gPhone

More Related