1 / 24

MAC Calibration results

MAC Calibration results. Date: 2014-09-15. Authors:. Abstract. In this submission, we will provide MAC calibration results for test 1, 2, and 3 We will propose additional test cases for MU transmission. STA 1. AP1. Test 1a – Parameters setting. MAC overhead w/o RTS/CTS

vincenzo-deegan
Download Presentation

MAC Calibration results

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. MAC Calibration results Date: 2014-09-15 Authors: Suhwook Kim, LG Electronics

  2. Abstract • In this submission, we will provide MAC calibration results for test 1, 2, and 3 • We will propose additional test cases for MU transmission Suhwook Kim, LG Electronics

  3. STA 1 AP1 Test 1a – Parameters setting • MAC overhead w/o RTS/CTS • MSDU length: 500, 1000, 1500, 2000 Bytes • 2 MPDU limit • RTS/CTS off • Data MSC: 0 (6.5 Mbps), 8 (78 Mbps) • ACK MSC: fixed to legacy MCS 0 (6 Mbps) • CWmin = 15 • AIFS = DIFS = 34 us Suhwook Kim, LG Electronics

  4. Test 1a – Results • Check point (1500 Byte, MCS 0) Suhwook Kim, LG Electronics

  5. Test 1a – Results • Calculation of Tput and simulation result Suhwook Kim, LG Electronics

  6. STA 1 AP1 Test 1b – Parameters setting • MAC overhead w/ RTS/CTS • MSDU length: 500, 1000, 1500, 2000 Bytes • 2 MPDU limit • RTS/CTS on • Data MSC: 0 (6.5 Mbps), 8 (78 Mbps) • RTS, CTS, ACK MSC: fixed to legacy MCS 0 (6 Mbps) • CWmin = 15 • AIFS = DIFS = 34 us Suhwook Kim, LG Electronics

  7. Test 1b – Results • Check point Suhwook Kim, LG Electronics

  8. Test 1b – Results • Calculation of Tput and simulation result Suhwook Kim, LG Electronics

  9. Test 2a – Parameters setting • Deferral Test 1 • MSDU length: 500, 1000, 1500, 2000 Bytes • 2 MPDU limit • RTS/CTS on or off • Data MSC: 0 (6.5 Mbps) • ACK MSC: fixed to legacy MCS 0 (6 Mbps) • Max number of retries = 10 • CWmin = 15 • CWmax = 1023 • AIFS = DIFS = 34 us AP 2 AP1 STA 2 STA 1 (AP1 and STA2 are essentially co-located) Suhwook Kim, LG Electronics

  10. Test 2a – Results • Deferral Test 1 Suhwook Kim, LG Electronics

  11. STA 2 AP 2 AP1 STA 1 Test 2b, 3 – Parameters setting • Deferral Test and NAV deferral • MSDU length: 1500 Bytes • 2 MPDU limit • RTS/CTS: test 2b(off), test 3(on) • Data MSC: 0 (6.5 Mbps), 8 (78 Mbps) • ACK MSC: fixed to legacy MCS 0 (6 Mbps) • Max number of retries = 10 • CWmin = 15 • CWmax = 1023 • AIFS = DIFS = 34 us Suhwook Kim, LG Electronics

  12. Test 2b – Collision model • Case analysis (in view of Green-colored frame) Suhwook Kim, LG Electronics

  13. Test 2b, 3 – Results • Deferral Test 2 and NAV deferral Suhwook Kim, LG Electronics

  14. Proposed test cases for MU transmission • IEEE 802.11ac has already DL MU-MIMO scheme • 11ax will adopt OFDMA and UL MU-MIMO probably • Therefore, we need to have test case for MU transmission • In this proposal, we firstly propose simple test cases for DL MU-MIMO transmission for MAC calibration Suhwook Kim, LG Electronics

  15. Proposed test case: Test 5 • DL MU-MIMO transmission • In this case, we will check operation of DL MU-MIMO data and BAR/BACK transmission • Basic parameters are specified in 14/0980r2 • Topology is similar with test case 1. There are one AP and two STAs • Assumption is that PER is 0 • Output metric: throughput, time trace of transmitting/receiving event STA 1 STA 2 AP1 Suhwook Kim, LG Electronics

  16. Test 5 • DL MU-MIMO transmission • Check point and frame transaction • CP1: AP1 transmits DL MU-MIMO data frame to STA1 and STA2 • CP2, CP3: STA1 will response by Block ACK after SIFS • CP4, CP5: AP will transmit BAR (Block ACK Request) to STA2 after SIFS • CP6: STA2 will response by Block ACK after SIFS Suhwook Kim, LG Electronics

  17. Proposed test case: Test 6 • DL MU-MIMO transmission with interference • In this case, we will check operation of DL MU-MIMO data and BAR transmission when there is interference • Basic parameters are specified in 14/0980r2 • Topology is similar with test case 2b. There are two APs and three STAs • AP1 and STA3 is hidden from AP2 and vice versa. • AP1 always transmit MU-MIMO data frame to STA1 and STA3 • Output metric: throughput, time trace of transmitting/receiving event STA 3 STA 2 AP 2 AP1 STA 1 Suhwook Kim, LG Electronics

  18. Test 6 • DL MU-MIMO transmission with interference • Check point and frame transaction • CP1: AP1 transmits DL MU-MIMO data frame to STA1 and STA3 • CP2, CP3: Reception of STA1 is fail because of interference from AP2. AP1 will transmit BAR to STA3 after one slot (PIFS) • CP4: STA3 will response by Block ACK after SIFS Suhwook Kim, LG Electronics

  19. Conclusion • In this submission, we provided MAC calibration results • Our results of test 1a/b are well matched with mathematical analysis • The results of test 2 and 3 need to be calibrated with other TG members • We firstly propose simple test cases for DL MU-MIMO transmission for MAC calibration • In this case, we will check operation of DL MU-MIMO data and BAR transmission when there is or isn’t interference Suhwook Kim, LG Electronics

  20. Straw poll • Do you agree to include the proposed test cases in the simulation calibration scenario? • Y • N • A Suhwook Kim, LG Electronics

  21. Appendix Suhwook Kim, LG Electronics

  22. Test 1a/b • Frame duration and overhead Suhwook Kim, LG Electronics

  23. Test 1a • Calculation of Tput Total application payload (bits) Throughput = Time consumed for transmitting total MAC payload (sec) Total application payload (bits) = Exp[Backoff] + Duration of A-MPDU + SIFS + Duration of ACK Total application payload (bits) = (34 + 9 * 7.5 )+ Duration of A-MPDU + 16 + 68 Suhwook Kim, LG Electronics

  24. Test 1b • Calculation of Tput Total application payload (bits) Throughput = Time consumed for transmitting total MAC payload (sec) Total application payload (bits) = Exp[Backoff] + Duration of RTS + SIFS + Duration of CTS + SIFS + Duration of A-MPDU + SIFS + Duration of ACK Total application payload (bits) = (34 + 9 * 7.5 ) + 52 + 16 + 44 + 16 + Duration of A-MPDU + 16 + 68 Suhwook Kim, LG Electronics

More Related