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Fall 2017

IC636: Wireless Networks (Fall 2017)

Kyung-Joon Park
Office hours: By appointment, E3-513 DGIST


  • No required textbook

Course Description:
Several major topics related to wireless networking will be covered, including a brief overview of physical layer issues, multiple access, TCP over wireless, and routing protocols for wireless LANs and ad hoc networks, sensor networks, and some security-related issues.

Grading policies:
Exam 70%, Homework 30%


  • Homework: Compare the key idea in "No time to countdown: Migrating backoff to the frequency domain" with the basic backoff mechanism in the Bianchi's paper. Please submit an one-page summary ( due: October 12 October 16 ).
  • Homework: Submit your summary why two-hop relay is better than direct communication in mobile ad hoc networks (November 30 December 4).
    • Hint: Find "interference-limited" and "distance-limited" in this paper
  • Homework: Carry out simulation of the Bianchi's model when m = 1 with small numbers of the backoff window size (due: Before the final exam).
  • The final exam is scheduled at 1:00 pm, December 19
  • The midterm exam is scheduled at 1:30 pm, October 30


  • [September 4] Introduction to physical layer issues
  • [September 7] Introduction to physical layer issues (cont'd)
  • [September 11] Medium access control - Basic MAC protocol
  • [September 14] Medium access control - Slotted and unslotted accesses, slot size selection
  • [September 18] Carrier sense, and tradeoff between carrier sense and transmit power
  • [September 21] Collision avoidance
  • [September 25] Medium access control - Virtual CS
  • [September 28] Transmission opportunity and throughput with carrier sensing
  • [October 2 & 5] No class (Chuseok (민족최대의 명절인 추석 연휴))
  • [October 9] No class (Hangul Day (한글날))
  • [October 12] No class (NRF review panel)
  • [October 16] Medium access control - Backoff mechanism and fairness issues (regular + makeup class)
  • [October 19] Rate control and power control
  • [October 23] Capacity of wireless networks
  • [October 26] Capacity of wireless networks (cont'd)
  • [October 30] Midterm exam
  • [November 2] No class (Midterm week)
  • [November 6] Understanding the capacity-delay tradeoff in wireless networks
  • [November 9] Switch architecture and switching algorithms, and wireless scheduling
  • [November 13] Routing in wireless networks
  • [November 16] Routing in wireless networks (cont'd)
  • [November 20] Performance analysis of IEEE 802.11 DCF
  • [November 23] Fixed point analysis of IEEE 802.11 DCF
  • [November 27] Paper presentation by students
  • [November 30] No class (DGIF)
  • [December 4] Paper presentation by students (regular + makeup class)
  • [December 7] Paper presentation by students (regular + makeup class)
  • [December 11] No class (IEEE CloudCom 2017)
  • [December 14] No class (ADD FNT 2017 Meeting)
  • [December 18] Paper presentation by students (regular + makeup class)
  • [December 19] Final exam at 1:00 pm

Paper Presentation:
Please keep in mind that the presentation time per paper is 20 minutes. You should deliver the key points of the paper as if you were the author.

1. 김동선 - F.-L. Lian, J. Moyne and D. Tilbury, "Network design consideration for distributed control systems," IEEE Transactions on Control Systems Technology, vol. 10, no. 2, pp. 297-307, March 2002.
2. 김시환 - A. Afanasyev, N. Tilley, P. Reiher, and L. Kleinrock, "Host-to-host congestion control for TCP," IEEE Communications Surveys & Tutorials, vol. 12, no. 3, 2010.
3. 유재민 - M. Krunz, A. Muqattash and Sung-Ju Lee, "Transmission power control in wireless ad hoc networks: challenges, solutions and open issues," in IEEE Network, vol. 18, no. 5, pp. 8-14, Sept.-Oct. 2004.
4. 정덕기 - Y. H. Wei, Q. Leng, S. Han, A. K. Mok, W. Zhang and M. Tomizuka, "RT-WiFi: Real-time high-speed communication protocol for wireless cyber-physical control applications," Real-Time Systems Symposium (RTSS) 2013, pp. 140-149.
5. 전수현 - K. Funabiki et al., "Throughput and Fairness Improvement for WLANs with Long Propagation Delay Coexisting with Conventional WLANs," 2015 IEEE Globecom Workshops (GC Wkshps), San Diego, CA, 2015, pp. 1-6.
6. 이용화 - K. M. Thilina, H. Tabassum, E. Hossain and D. I. Kim, "Medium access control design for full duplex wireless systems: challenges and approaches," in IEEE Communications Magazine, vol. 53, no. 5, pp. 112-120, May 2015.
7. 이건 - Ye Tian, Kai Xu, and Nirwan Ansari, "TCP in wireless environments: Problems and solutions," IEEE Communications Magazine, vol. 43, no. 3, March 2005.
8. 유동현 - K. Duffy, D. Malone, and D. J. Leith, "Modeling the 802.11 distributed coordination function in non-saturated conditions," IEEE Communications Letters, vol. 9, no. 8, Aug 2005.
9. 문시훈 - X. Ji, Y. He, J. Wang, W. Dong, X. Wu and Y. Liu, "Walking down the STAIRS: Efficient collision resolution for wireless sensor networks," IEEE INFOCOM 2014 - IEEE Conference on Computer Communications, Toronto, ON, 2014, pp. 961-969.
10. 김규민 - P. A. K. Acharya, A. Sharma, E. M. Belding, K. C. Almeroth and K. Papagiannaki, "Congestion-Aware Rate Adaptation in Wireless Networks: A Measurement-Driven Approach," 2008 5th Annual IEEE Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks, San Francisco, CA, 2008, pp. 1-9.
11. 김상준 - M. O. Khan and L. Qiu, "Accurate WiFi packet delivery rate estimation and applications," IEEE INFOCOM 2016 - The 35th Annual IEEE International Conference on Computer Communications, San Francisco, CA, 2016, pp. 1-9.
12. 최신욱 - Gummadi, R., Patra, R. K., Balakrishnan, H., and Brewer, E. A, "Interference Avoidance and Control," In HotNets, pp. 13-18, October 2008.
13. 이성호 - X. Zheng, J. Wang, L. Shangguan, Z. Zhou and Y. Liu, "Smokey: Ubiquitous smoking detection with commercial WiFi infrastructures," IEEE INFOCOM 2016 - The 35th Annual IEEE International Conference on Computer Communications, San Francisco, CA, 2016, pp. 1-9.
14. 진우철 - S. Rayanchu, A. Mishra, D. Agrawal, S. Saha and S. Banerjee, "Diagnosing wireless packet losses in 802.11: Separating collision from weak signal," IEEE INFOCOM 2008 - The 27th Conference on Computer Communications, Phoenix, AZ, 2008.
15. 조원철 - Rafael Laufer and Leonard Kleinrock, "On the capacity of wireless CSMA/CA multihop networks," IEEE INFOCOM 2013, Turin, Italy, April 2013.
16. 윤희용 - S. Lee, M. Lee, D. Lee, H. Jung and B. S. Lee, "TCPRand: Randomizing TCP payload size for TCP fairness in data center networks," 2015 IEEE Conference on Computer Communications (INFOCOM), Kowloon, 2015, pp. 1697-1705.

Reading list:
Real-time control over wireless networks

Rate adaptation


MAC misbehavior

Network capacity

Performance analysis of IEEE 802.11 DCF


Full-duplex wireless

Additional reading list

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Page last modified on March 18, 2018, at 12:54 AM EST