1 / 21

11ax PAR Verification through OFDMA

11ax PAR Verification through OFDMA. Date: 2016-11-07. Authors:. Introduction. The goal of this contribution is to verify that the target of 11ax PAR is met i.e. four times throughput enhancement

lhertz
Download Presentation

11ax PAR Verification through OFDMA

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. 11ax PAR Verification through OFDMA Date: 2016-11-07 Authors: Suhwook Kim, LG Electronics

  2. Introduction • The goal of this contribution is to verify that the target of 11ax PAR is met • i.e. four times throughput enhancement • In contributions [1] – [10], we have addressed OFDMA performance based on PHY/MAC-integrated simulation • In September meeting, we addressed 26-tone RU, UL only traffic in Outdoor Scenario • We could achieve up to 15.4 times OFDMA throughput gain Suhwook Kim, LG Electronics

  3. Main update in the simulation • Previous submission • UL only traffic has been considered to exploit OFDMA gain in UL side • Only 2 BSSs scenario has been considered for OBSS case • Update in this submission • To verify OFDMA gain in more real field, we updated traffic mode and OBSS case • We consider DL/UL mixed traffic • Modified SS4 (7 BSSs in Outdoor Large BSS) is considered Suhwook Kim, LG Electronics

  4. Simulation Parameters Suhwook Kim, LG Electronics

  5. Simulation Setup for Single BSS • Topology description • Number of STA: 37 • STA location • 15, 25, 35, 45, 55 meters from AP • Distribution of STA’s location: Next slide • Channel model • UMi, NLoS only • In OFDMA, DL and UL portion is 1:37 or 1:1 15 m 25 m 35 m 45 m 55 m Suhwook Kim, LG Electronics

  6. Simulation Cases for Single BSS • Case 1: All STAs (37 STAs) are co-located • Case 1 – 1 : All STAs at 55 meters • Case 1 – 2 : All STAs at 45 meters • Case 1 – 3 : All STAs at 35 meters • Case 1 – 4 : All STAs at 25 meters • Case 1 – 5 : All STAs at 15 meters • DL / UL portion = 1 : 37 • Case 2: 37 STAs are distributed in proportion to the square of distance • 16 / 11 / 6 / 3 / 1 (55m / 45m / 35m / 25m / 15m) • DL / UL portion = 1 : 1 Suhwook Kim, LG Electronics

  7. Simulation Setting: MCS and BW • In each distance, the best combination of MCS and transmission BW was selected Suhwook Kim, LG Electronics

  8. Simulation Result for Case 1 • Sum Throughput Suhwook Kim, LG Electronics

  9. Simulation Result for Case 1 • DL Throughput Suhwook Kim, LG Electronics

  10. Simulation Result for Case 1 • UL Throughput Suhwook Kim, LG Electronics

  11. Simulation Result for Case 2 • Throughput of each STA OFDMA gain: 3.7 (Sum Throughput Legacy: 24.89 Mbps OFDMA: 92.92 Mbps) Suhwook Kim, LG Electronics

  12. Discussion for Single BSS • If STAs are co-located at same distance, • UL OFDMA gain increases with distance between STA and AP • DL OFDMA gain is around 6 ~ 8 without distance between STA and AP • total OFDMA gain is larger than four times in every distance • If STAs are distributed in proportion to the square of distance, • near STAs get more TXOP and dominantly affect the overall performance in Legacy • OFDMA can achieve relatively even performance and more higher sum throughput Suhwook Kim, LG Electronics

  13. Simulation Setup for OBSS • Topology description • Modified SS4 (Outdoor Large BSS), ICD = 130 meters • STA location • Random in 15, 25, 35, 45, 55 meters ring from each home AP • Distribution is same with single BSS Case 2 (1 / 3 / 6 / 11 / 16) • MCS and BW: 1 level drop from single BSS simulation setting Suhwook Kim, LG Electronics

  14. Simulation Result for OBSS • Throughput of each STA OFDMA gain: 5.9 (Sum Throughput Legacy: 11.36 Mbps OFDMA: 67.33 Mbps) Suhwook Kim, LG Electronics

  15. Discussion for OBSS • In OBSS Outdoor scenario, • OFDMA shows better throughput in every distance • only 15m and 25m STAs have over 1 Mbps throughput in legacy, but OFDMA can support over 1 Mbps throughput up to 55m • DL performance is very poor in legacy, but OFDMA can support appropriate DL performance • total OFDMA gain is over four times Suhwook Kim, LG Electronics

  16. Conclusion • We verified that OFDMA can provide four times throughput enhancement in outdoor environment and DL/UL mixed traffic • More gain in OFDMA can be obtained e.g., by adopting a better scheduler than a random scheduler Suhwook Kim, LG Electronics

  17. Reference • [1] ~ [10] 11-15/1095r0 ~ r10 • [10] 11-14/0980r14 Simulation Scenarios Suhwook Kim, LG Electronics

  18. Appendix – Detail results Suhwook Kim, LG Electronics

  19. Simulation Result for Case 1 Suhwook Kim, LG Electronics

  20. Simulation Result for Case 2 Suhwook Kim, LG Electronics

  21. Simulation Result for OBSS Suhwook Kim, LG Electronics

More Related