CPS Final Presentation
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The document outlines an objective to implement real-time detection of selfish behavior in IEEE 802.11 wireless networks. It describes a test-bed that was successfully implemented and a static detector. It also discusses using a non-parametric cumulative sum (CUSUM) test to detect unknown selfish behavior strategies in real-time by monitoring successful transmissions of individual nodes compared to the whole network. Future work includes detecting strategies dynamically and expanding the detector.
CPS Final Presentation
- 1. To Implement Real-Time Detection of Selfish Behavior in IEEE 802.11 Wireless Networks Ravi Kiran Paladugu Future Networking Laboratory (FuNLabs)
- 2. Outline Objective Test-bed – “successfully Implemented” Detector – “static implementation achieved” Video Demo Future work Conclusion
- 3. Background With high growing rate of IEEE 802.11 based wireless networks in recent years the security became a concern As a contention based protocol, 802.11 assumes that every participant in the network acts in compliance with the protocol rules
- 4. Contd… The open and distributed nature of the protocol makes it possible for selfish nodes to deliberately modify the protocol parameters This leads to unfair share to the network at the expenses of other normal node’s channel access
- 5. Objective: With the above focused disadvantages we are motivated to develop a real-time detection scheme and to identify the malicious node We also want to detect the unknown selfish behavior strategy Also I would like to track the successful transmissions and have log of it for dynamic expansion and contraction of the congestion window
- 6. Detection Scheme The two challenges are to detect unknown selfish behavior strategy and real-time detection. We came up with an detection scheme based on non-parametric cumulative sum (CUSUM) test The CUSUM test statistic is able to accumulate the deviation brought by the selfish behavior of a malicious node and raise an alarm
- 7. Contd.. We now monitor the number of successful transmissions of the tagged node every T successful transmissions of the whole network As a selfish node is likely to always obtain more opportunities, the cumulative effect of its selfish behavior can quickly be captured by the CUSUM test Once the CUSUM detects it, an alarm is then raised
- 8. Demo:
- 9. Future Work: To be able to detect strategy and to implement dynamic detector
- 10. Reference : Real-Time Detection of Selfish Behavior in IEEE 802.11 Wireless Networks (Jin Tang, Yu Cheng, Yong Hao and Chi Zhou; Dept. of Electrical Engineering, Illinois Institute of Technology) An analytical approach to real-time misbehavior detection in IEEE 802.11 based wireless networks (Jin Tang, Yu Cheng and W. Zhuang, Proc. IEEE INFOCOM, Shanghai, China, Apr 10-15, 2011.)