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Seongwon Kim

     [Google Scholar] 
    Research Engineer

    T-Brain, SK Telecom 


  • Office: SK T-Tower, 65, Eulji-ro, Jung-gu, Seoul, 04539, Korea
  • Email:


  • Seoul National University, Postdoctoral Researcher, Oct. 2017 to Feb. 2019
  • Rice University, Visiting Research Scholar, July 2017 to Oct. 2017


Research Interests

  • Artificial IntelligenceMultimodal AI, mobile deep learning framework, distributed deep learning, super-resolution

  • IoT Connectivity: IEEE 802.11ax, mmWave communications, V2X communications, aerial acoustic communications,
    enterprise wireless networks,   MIMO systems

  • Next-generation (5G/6G) wireless networksFull duplex radio, ultra-reliable low latency communication, ultra-dense networks,
    heterogeneous wireless networks, market pricing


  1. Silver Prize (second prize in Communications & Network division) from Samsung HumanTech Paper Award, Feb. 2017.
  2. Excellent Graduate Student Prize from the Department of Electrical and Computer Engineering, Seoul National University, Jan. 2017.
  3. Gold Prize (first prize in Communications & Network division) from Samsung HumanTech Paper Award, Feb. 2016.
  4. Qualcomm Innovation Award, Jan. 2014.
  5. Bronze Medal from Korea Physics Olympiad, Dec. 2006.
  6. Presidential Prize (first prize in all parts) & first prize in Physics part from the National Science Contest, Sept. 2006. 


   International Conference Papers
  1. Hwijae Kwon, Seongwon Kim, Youngwook Son, Changmok Yang, Seongho Byeon, and Sunghyun Choi,
    "AWARE: Adaptive Wi-Fi Power Save Operation Coexisting with LTE-U,"
    in Proc. IEEE MASS 2019, Monterey, CA, USA, Nov. 4-7, 2019.

  2. Jin-hwan Oh, Sudhakar Sah, Jihoon Kim, Yoori Kim, Jeonghwa Lee, Wooseung Lee, Myeongsoo Shin, Jaeyon Hwang, and Seongwon Kim,
    "Hang Out with the Language Assistant: Hola—A True Multimodal Assistant,
    in Proc. ACM ICMI 2019 Demonstration, Suzhou, Jiangsu, China. Oct. 14-18, 2019. 

  3. Seongwon Kim, Youngwook Son, Kanghyun Lee, Jaehong Yi, and Sunghyun Choi,
    "Quiet CTS: CTS Power Control for Better Spatial Reuse in Wi-Fi,"
    in Proc. ACM MobiHoc 2019, Catania, Italy, July 2-5, 2019. (Acceptance ratio: 23.71% = 37/156) 

  4. Chulyoung Kwak, Seongwon Kim, Soonwon Ka, Jihwan Lee, and Sunghyun Choi,
    "No Entry: Anti-Noise Energy Detector for Chirp-Based Acoustic Communication,"
    in Proc. IEEE SECON 2019,
     Boston, USA, June 10-13, 2019. [PDF]

  5. Seongwon Kim, Jaehong Yi, Youngwook Son, Seungmin Yoo, and Sunghyun Choi,
    Quiet ACK: ACK Transmit Power Control in IEEE 802.11 WLANs,”
    in Proc. IEEE INFOCOM 2017, Atlanta, GA, USA, May 1-4, 2017. (Acceptance ratio: 20.93% = 292/1395) [PDF][Slides]

  6. Seongwon Kim, Chan-Byoung Chae, and Sunghyun Choi,
    “MASTaR: MAC Protocol for Access Points in Simultaneous Transmit and Receive Mode,” 
    in Proc. IEEE GLOBECOM 2016 Workshop on Full Duplex Wireless Communications, Washington, D.C., Dec. 8, 2016. [PDF]

  7. Seungmin Yoo, Seongwon Kim, Jaehong Yi, Youngwook Son, and Sunghyun Choi,
    “Practical Antenna Selection for WLAN AP,”
    in Proc. IEEE INFOCOM 2016, San Francisco, CA, USA, Apr. 10-15, 2016. (Acceptance ratio: 18.25% = 300/1644) [PDF]
  8. Seongwon KimYeonchul Shin, Seungmin Yoo, and Sunghyun Choi, 
    “JACPoT: A Joint Algorithm for Channel and Power Assignment in Enterprise Wireless Networks,”
    Proc. IEEE GLOBECOM 2015San Diego, CA, USA, Dec. 6-10, 2015. [PDF]

  9. Seungmin Yoo, Yeonchul Shin, Seongwon Kim, and Sunghyun Choi, 
    “Toward Realistic WiFi Simulation with Smartphone “Physics”,” 
    in Proc. IEEE WoWMoM 2014, Sydney, Australia, June 16-19, 2014. (short paper) [PDF]

  10. Dongmyoung Kim, Seongwon Kim, Hyoil Kim, and Sunghyun Choi, 
    “Pricing Policies for Femtocell Service Adoption in Two-tier Cellular Networks,” 
    in Proc. IEEE ICC 2014, Sydney, Australia, June 10-14, 2014. [PDF]

  11. Seongwon Kim, Seungmin Yoo, Yeonchul Shin, and Sunghyun Choi, 
    “A Novel Metric for Dynamic Channel Assignment in Enterprise Wireless Networks,” 
    in Proc. 
    ICUFN 2013, Da Nang, Vietnam, July 2-5, 2013. [PDF] 
    (Invited paper)

   International Journal Papers  (* indicates corresponding authors)
  1. Sundo Kim, Seongwon Kim*, Junseok Kim, Kitack Lee, Sunghyun Choi, and Byonghyo Shim*,
     “Low Latency Random Access for Small Cell UE Toward Future Cellular Network,”
    accepted to IEEE Access, Dec. 2019.

  2. Junseok Kim, Seongwon Kim*, Tarik Taleb, and Sunghyun Choi*,
    "RAPID: Contention Resolution-based Random Access using Context ID for IoT,"
    IEEE Transactions on Vehicular Technology,  vol. 68, no. 7, pp 7121-7135, July 2019. [PDF]

  3. Changmok Yang, Seongwon Kim*, Seongho Byeon, and Sunghyun Choi*, 
    "HIATus: Hidden Interference-Aware Transmission Bandwidth Adjustment in IEEE 802.11ac WLANs," 
     IEEE Communications Letters, vol. 23, no. 3, pp. 510-513, Mar. 2019. [PDF]

  4. Byungjun KimSeongwon Kim*, Hoyoung Yoon, Sunwook Hwang, M. Xavier Punithan, Byeong Rim Jo, and Sunghyun Choi*, 
    "Nearest-First: Efficient Relaying Scheme in Heterogeneous V2V Communication Environments," 
    IEEE Access, Feb. 2019. 
    [PDF][Open Access]

  5. Youngwook Son, Seongwon Kim*, Seongho Byeon, and Sunghyun Choi*, 
    “Symbol Timing Synchronization for Uplink Multi-User Transmission in IEEE 802.11ax WLAN,” 
    IEEE Access, vol. 6, pp. 72962-72977, Nov. 2018. [PDF][Open Access]

  6. Seongwon Kim, Minsoo Sim, Chan-Byoung Chae, and Sunghyun Choi*, 
    “Asymmetric Simultaneous Transmit and Receive in WiFi Networks,” 
    IEEE Access, vol. 5, pp. 14079-14094, July 2017. [PDF][Open Access]

  7. Seongwon Kim, Seungmin Yoo, Jaehong Yi, Youngwook Son, and Sunghyun Choi*, 
    “FACT: Fine-Grained Adaptation of Carrier Sense Threshold in IEEE 802.11 WLANs,”
    IEEE Transactions on Vehicular Technology, vol. 66, no. 2, pp. 1886-1891, Feb. 2017. [PDF]

  8. Dongmyoung Kim, Taejun Park, Seongwon Kim, Hyoil Kim, and Sunghyun Choi*, 
    “Load Balancing in Two-Tier Cellular Networks with Open and Hybrid Access Femtocells,” 
    IEEE/ACM Transactions on Networking, vol. 24, no. 6, pp. 3397-3411, Dec. 2016. [PDF]

  9. Seungmin Yoo, Seongwon Kim, Jaehong Yi, Youngwook Son, and Sunghyun Choi*,
    “ProCCA: Protective Clear Channel Assessment in IEEE 802.11 WLANs,”
    IEEE Communications Letters, vol. 20, no. 5, pp. 958-961, May 2016. [PDF]

  10. Weiping Sun, Okhwan Lee, Yeonchul Shin, Seongwon Kim, Changmok Yang, Hyoil Kim, and Sunghyun Choi*, 
    “Wi-Fi Could Be Much More,” 
    IEEE Communications Magazine, Special Issue on The Future of Wi-Fi, vol. 52, no. 11, pp. 22-29, Nov. 2014. [PDF
  1. Hwijae Kwon, Seongwon Kim, Seongho Byeon, Youngwook Son, Changmok Yang, and Sunghyun Choi,
    "LTE-U Detection Method of an IEEE802.11 Wireless LAN Station Coexisting with LTE-U,"
    Korean Patents Application 10-2019-0018549, Feb. 18, 2019.

  2. Sunwook Hwang, Seongwon Kim, Hoyoung Yoon, Byungjun Kim, and Sunghyun Choi, 
    "Method and Apparatus for Communication between Vehicles and Apparatus for Using the Same," 
    Korean Patents 
    Application 10-2018-0159276, Dec. 11, 2018.

  3. Youngwook Son, Seongwon Kim, Kanghyun Lee, and Jonghoon Han, Sunghyun Choi, 
    "Wireless Communication Device Using Spatial Reuse and Data Communication Method Using the Same"
     Korean Patent Application 10-2018-0141957, Nov. 16, 2018.

  4. Seongwon Kim, Seungmin Yoo, Youngwook Son, Jaehong Yi, Sunghyun Choi, SangHyun Chang, Byounghoon Jung, Sooyoung Jang,
    Method and Apparatus for Determining Carrier Sense Threshold in Wireless Communication System," 
    U.S. Patent Application 20170055289A1, Feb. 23, 2017,
    E.P.O. Patent Application 3133891A1, Feb. 22, 2017,
    Korean Patent Application 20170022777A, Mar. 2, 2017.

  5. Youngwook Son, Seungmin Yoo, Seongwon Kim, Jaehong Yi, Sunghyun Choi, SangHyun Chang, Byounghoon Jung, Sooyoung Jang,
    Method and Apparatus for Transmitting and Receiving Buffer Status Information in Wireless Communication System," 
    U.S. Patent 10070341B2, Sep. 4, 2018,
    E.P.O. Patent Application 3171630A1, May 24, 2017,
    Korean Patent Application 20170022474A, Mar. 2, 2017.

  6. Seungmin Yoo, Seongwon Kim, Youngwook Son, Jaehong Yi, Sunghyun Choi, Youngjip Kim, Taejun Kim, Okhwan Lee, Woonkyun Lee, 
    "Technique and Apparatus for Selecting Multiple Antennas," 
    WO Patent Application 2017014437A1, Jan. 26, 2017,
    U.S. Patent Application 20180205433A1, July 19, 2018,
    Korean Patent Application 20170010673A, Feb. 1, 2017.

  7. Ji-Woo Jeong, Seongwon Kim, Yeonchul Shin, Seo-Min YANG, Jin-Woo Yang, Seungmin Yoo, Sunghyun Choi, and Chulhoon Hwang,
    "Method and Apparatus for Managing Radio Resource in Wireless Communication System," 
    U.S. Patent 9883466B2, Jan. 30, 2018,
    WO Patent Application 2015012585A1, Jan. 29, 2015,
    Korean Patent Application 20150012890A, Feb. 4, 2015.

   Domestic Publications
  1. 이지환, 곽철영, 김성원, 최성현,
    "정적인 실내 환경에서의 음파 통신 시뮬레이터를 위한 채널 프로파일링,"
    한국통신학회 2017년도 동계종합학술발표회, 강원 정선, 2017년 1월 19일.

  2. 곽철영, 이지환, 김성원, 최성현,
    "비가청 음파통신 시뮬레이터를 위한 동적 실내환경 채널 프로파일링,"
    한국통신학회 2017년도 동계종합학술발표회, 강원 정선, 2017년 1월 19일.

  3. 이재홍, 구종회, 김성원, 손영욱, 최성현,
    "테더링 동작을 하는 스마트폰의 전력 소모 분석 및 전력 소모 감소 기술에 대한 연구,"
    한국통신학회 2016년도 하계종합학술발표회, 제주, 2016년 6월 22-24일.

  4. 손영욱, 김성원, 유승민, 이재홍, 최성현, 
    "차세대 무선랜을 위한 OFDMA 기법 기반 다중유저 채널접근 프로토콜," 
    한국통신학회 2016년도 동계종합학술발표회, 강원 정선, 2016년 1월 21일.

  5. 손위평, 이옥환, 신연철, 김성원, 서지훈, 최성현, 
    "차세대 IEEE 802.11 무선 랜 기술 및 연구 동향," 
    SK Telecommunications Review, 2013년 8월. (초청 논문)

  6. 김성원, 이혜원, 박태준, 최성현, 
    "지터 측정을 통한 단방향 지연 시간 추정," 
    한국통신학회 2013년도 동계종합학술발표회, 강원 평창, 2013년 1월 31일.

Research Projects

  • LG Electronics, "Dual Interface Synchronized Hybrid V2X Research by Simulation," Sep. 2018 to Feb. 2019.

  • Samsung Electronics, "Extensions of optimal spatial reuse algorithm based on next-generation IEEE 802.11ax standard considering practical use environments", July 2018 to Feb. 2019.

  • Institute for Information and Communications Technology Promotion (IITP), "Development of wireless LAN platform with smart cloud based multi radio structure,'' July 2018 to Feb. 2019.

  • Samsung Electronics, "Implementation of optimal spatial reuse algorithm based on next-generation IEEE 802.11ax standard",  July 2017 to June 2018

  • Institute for Information and Communications Technology Promotion (IITP), "Design of scalable 2nd screen acoustic signal for VOD playback command to set-top box",  June 2017 to Feb. 2019.

  • Samsung Electronics, "Researches on 6G innovation techniques—AI-based SON techniques", June 2018 to Feb. 2019.

  • Ministry of Science, ICT and Future Planning (MSIP), Next generation TV-mobile connected Ad platform via extremely low volume inaudible tone communications,” Jan. 2016 to May 2017.

  • Samsung Electronics, “IoT heterogeneous connectivity and operation system,” Sep. 2014 to Aug. 2015.

  • Samsung Electronics, “Multiple antenna selection in office environments,” Oct. 2013 to May 2014.

  • Samsung Electronics, “Radio resource management in enterprise wireless networks,” June 2012 to Mar. 2013.

  • Ministry of Knowledge Economy (MKE), “MU-MIMO based protocol design in multi-hop wireless mesh network," Mar. 2011 to Dec. 2011.

Research Experience

  • Visiting Scholar, Rice University (Advisor: Prof. Edward Knightly), USA, July 2017 to Oct. 2017.

Invited Talks and Tutorials 

  1. Tutorial on "Tracing System and Wired LAN in ns-3" at 2016 KICS ns-3 lecture, Feb. 17th, 2016.
  2. Tutorial on "Tracing System and Wired LAN in ns-3" at 2015 KICS ns-3 lecture, Feb. 24th, 2015.
  3. Invited Talk, "Pricing on Femtocell Adoption in Duopoly Cellular Service Market," at University of Southern Queensland, Australia, June 16th, 2014. (Hosted by Prof. Wei Xiang)
  4. Tutorial on "Tracing System and Wired LAN in ns-3" at 2014 KICS ns-3 lecture, Feb. 24th, 2014.

Professional Activities

    Professional Services 
  • Publication Chair, IEEE DySPAN 2018
  • TPC Member, IEEE ICC 2018 & 2019, IEEE WCNC 2019

  • International Journals: IEEE Trans. Netw., IEEE Trans. Commun., IEEE Trans. Wireless Commun., IEEE Access, IEEE Wireless Commun. Lett.,
    J. Commun. Netw.
  • International Conferences: IEEE ICC, IEEE GLOBECOM

    Teaching Assistant
  • 430.463 Introduction to Data Communication Networks, Spring 2012.
  • 430.752B Wireless Networking, Spring 2013.

Software Skills

     Prototyping Tools
  • LabVIEW FPGA, LabVIEW Communications System Design Suite (CSDS)
  • Linux Wireless Device Driver (ath9k)

     Simulation Tools
  • Network Simulator 3 (ns-3) 
  • Simulink

    Test, Data acquisition, and Measurement Tools
  • Wireshark, Omnipeek, Chanalyzer
  • Iperf, IxChariot

    Programming Languages and Frameworks
  • C, C++, Python, MATLAB, TensorFlow, PyTorch, UNIX shell scripting, Windows batch scripting

    Desktop Editing and Productivity Software
  • Vim, TeX (LaTeX, BiBTeX), Git, Microsoft Office

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