Uplink multi-user transmission MAC for IEEE 802.11ax

• Project/Area Number: 15K18067
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Communication/Network engineering
• Research Institution: Kyushu Institute of Technology
• Principal Investigator: Lanante Leonardo Jr 九州工業大学, 大学院情報工学研究院, 助教 (10649833)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000); Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
• Keywords: マルチユーザー通信 / 無線LAN / IEEE802.11 / アクセス方式 / IEEE 802.11ax / UL OFDMA random access / multiple access protocol / multiuser / OFDMA / random access / uplink multi-user

Outline of Final Research Achievements

During the three year study, we designed an efficient implementation of the 802.11ax Wireless LAN MAC. Specifically, our design focused on the UL OFDMA random access which is a new feature introduced in 802.11ax. This feature improves the users' Wireless LAN experience in very user dense environments by allowing them to transmit at the same time even without prior channel reservation. We presented our results for maximizing the efficiency of this feature both in domestic and international conferences and contributed to the 802.11ax international standardization. One of our contribution done jointly with researchers in the industry was subsequently accepted by the IEEE task group ax to be included in the next generation standard. As a future research direction, carrier sensing combined with UL OFDMA can be used to further improve efficiency through collision avoidance.

Research Products

• [Journal Article] OFDMAランダムアクセスのマルコフ連鎖モデル化とその性能解析 (2017)
  • Author(s): 上井竜己, 長尾勇平, ラナンテレオナルドジュニア, 黒埼正行, 尾知博
  • Journal Title: 電子情報通信学会 Journal of IEICE Volume: J100-B Pages: 492-504
  • Peer Reviewed
• [Journal Article] OFDMAランダムアクセスのマルコフ連鎖モデル化とその性能解析 (2017)
  • Author(s): 上井 竜己, 長尾 勇平, ラナンテ レオナルド ジュニア,黒崎 正行,尾知 博
  • Journal Title: IEICE Transactions on Communications Volume: J100-B
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] Performance Analysis of the 802.11ax UL OFDMA Random Access Protocol in Dense Networks (2017)
  • Author(s): Leonardo Lanante Jr, Tatsumi Uwai, Yuhei Nagao, Masayuki Kurosaki, Hiroshi Ochi, Chittabrata Ghosh
  • Organizer: IEEE International Conference on Communications (ICC 2017)
  • Place of Presentation: Paris Congress Center (Paris, France)
  • Year and Date: 2017-05-21
  • Int'l Joint Research
• [Presentation] Optimization of Scheduled Random Access OFDMA Transmission in 802.11ax (2017)
  • Author(s): Leonardo Lanante, Masayuki Kurosaki, Hiroshi Ochi,
  • Organizer: IEICE Technical Report
  • Place of Presentation: 東京工業大学(東京都、目黒区)
  • Year and Date: 2017-03-01
• [Presentation] 下りリンク非直交多元接続における総伝送レート/フェアネス制御手法 (2017)
  • Author(s): 田代晃司,長尾勇平,レオナルドラナンテ,黒崎正行,尾知博
  • Organizer: IEICE Technical Report
  • Place of Presentation: 大阪市立大学 (大阪府,大阪市)
  • Year and Date: 2017-01-19
• [Presentation] Analysis of Finite Retry Limit on Uplink OFDMA Random Access, (2017)
  • Author(s): Tomoyasu Irikida, Tatsumi Uwai, Leonardo Lanante Jr., Masayuki Kurosaki and Hiroshi Ochi
  • Organizer: International Workshop on Smart Info-Media Systems in Asia
• [Presentation] Performance analysis of the 802.11ax UL OFDMA random access protocol in dense networks (2017)
  • Author(s): Leonardo Lanante, Hiroshi Ochi, Tatsumi Uwai, Yuhei Nagao, Masayuki Kurosaki and Chittabratta Ghosh
  • Organizer: EEE International Conference on Communications (ICC)
• [Presentation] Adaptive Backoff Mechanism for OFDMA Random Access with Finite Service Period in IEEE802.11ax (2016)
  • Author(s): Tatsumi Uwai, Takuma Miyamoto, Yuhei Nagao, Leonardo Lanante Jr., Masayuki Kurosaki, and Hiroshi Ochi
  • Organizer: IEEE Conference on Standards for Communications & Networking (CSCN) 2016
  • Place of Presentation: Fraunhofer-Forum (Berlin, Germany)
  • Year and Date: 2016-10-31
  • Int'l Joint Research
• [Presentation] Performance Evaluation of OFDMA Random Access in IEEE802.11ax (2016)
  • Author(s): Tatsumi Uwai, Takuma Miyamoto, Yuhei Nagao, Leonardo Lanante Jr., Masayuki Kurosaki, and Hiroshi Ochi
  • Organizer: nternational Symposium on Intelligent Signal Processing and Communication Systems (ISPACS) 2016
  • Place of Presentation: Phuket Graceland Resort (Phuket, Thailand)
  • Year and Date: 2016-10-24
  • Int'l Joint Research
• [Presentation] A STA initiated MAC Protocol for IEEE 802.11 ax Uplink Multi-User Communication (2016)
  • Author(s): Takuma Miyamoto, Yuichi Sugiyama, Tatsumi Uwai, Yuhei Nagao, Leonardo Jr. Lanante, and Hiroshi Ochi
  • Organizer: International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC) 2016
  • Place of Presentation: Okinawa Pref. Municipal Center (Naha City, Okinawa)
  • Year and Date: 2016-07-10
  • Int'l Joint Research
• [Presentation] Adaptive Random Access UL OFDMA (2016)
  • Author(s): Leonardo Lanante Jr, Tatsumi Uwai, Yuhei Nagao, Masayuki Kurosaki, Hiroshi Ochi
  • Organizer: IEEE 802.11ax Standardization Interim Meeting
  • Place of Presentation: Hilton Waikoloa (Hawaii、USA)
  • Year and Date: 2016-05-16
• [Presentation] IEEE802.11axにおけるアップリンクマルチユーザ向けMACプロトコルに関する研究 (2016)
  • Author(s): 杉山雄一
  • Organizer: IEICE総合大会
  • Place of Presentation: 九州大学
  • Year and Date: 2016-03-15
• [Presentation] Random Access UL MU Resource Allocation and Indication (2016)
  • Author(s): Leonardo Lanante
  • Organizer: IEEE 802.11ax Standardization Meeting
  • Place of Presentation: Macau, China
  • Year and Date: 2016-03-14
• [Presentation] Transmission Interval of Trigger Frames (2015)
  • Author(s): Leonardo Lanante
  • Organizer: IEEE 802.11ax Standardization Meeting
  • Place of Presentation: Hawaii, USA
  • Year and Date: 2015-07-13