1 / 28

Outline

Outline. Introduction Background Activities in TSG-C WG3 EMAH for performance evaluation of UMB system Calibration process among companies Simulation conditions for UMB performance evaluation Simulation results Conclusion Appendix: Examples of link level simulation results

vidar
Download Presentation

Outline

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. Outline • Introduction • Background • Activities in TSG-C WG3 EMAH for performance evaluation of UMB system • Calibration process among companies • Simulation conditions for UMB performance evaluation • Simulation results • Conclusion • Appendix: • Examples of link level simulation results • System level simulation results for calibration • Backup slides for simulation results under NGMN setup

  2. Introduction • Standardization of UMB system • March 2006 to February 2007: Decision of framework and components • April, 2007: Publication of UMB Air Interface Specification Version 1.0 • May to August, 2007: Revision of UMB Air Interface Specification • September, 2007: Publication of UMB Air Interface Specification Version 2.0 However, UMB characterization has not been completed yet … Necessity of Performance evaluation for UMB system!

  3. Background (1)~ History on Activities for Performance Evaluation of UMB ~ • History: • June, 2007: agreed upon to start UMB characterization • July to August, 2007: preparatory work (e.g. outline of simulation setting, parameters, timeline) • August to December, 2007: Calibration of link curves • December 2007 until now: Calibration of system level simulation results

  4. Background (2)~ Calibration Processes for UMB Performance Evaluation ~ • Link level simulations: • From Aug., 2007, each company began to provide simulation results • Oct, 2007: confirmed that three companies (Samsung, Huawei, and KDDI) were aligned • Nov. to Dec., 2007: another two companies (Qualcomm and Alcatel-Lucent) were also aligned with the three companies Appendix A: examples of link level simulation results

  5. Background (3)~ Calibration Processes for UMB Performance Evaluation ~ • System level simulations: • From Dec., 2007, companies (KDDI, Samsung, Nortel, Qualcomm, Huawei, and Alcatel-Lucent) began to provide simulation results • In total, five rounds have been performed for calibration among companies so far • March, 2008: confirmed that all the companies involved in the calibration (KDDI, Samsung, Nortel, Qualcomm, and Huawei) were aligned on the full-buffer traffic model in the forward link (FL-FB) • April, 2008: confirmed that all the companies involved in the calibration were aligned on the VoIP traffic model in the forward link (FL-VoIP) • Up to now: most of the companies have been aligned in the remaining simulation scenarios as follows • Full-buffer traffic model in the reverse link (RL-FB) • VoIP traffic model in the reverse link (RL-FB) • Full-buffer traffic model in the forward link with MIMO (FL-MIMO) Appendix B: examples of system level simulation results

  6. Toward UMB Performance Evaluation • For the purpose of calibrations among companies, we use a set of simplified simulation models such as • Simplified power control model compared to the UMB air interface specification • No power control in the forward link • No rank adaptation in the FL-MIMO simulations • Etc. • This presentation provides actual performances both • taking account of the realistic scenarios as in above and • using simulation parameters in the NGMN’s evaluation methodology document

  7. Simulation Parameters

  8. Simulation Conditions for Full Queue Traffic Model • System bandwidth – 992 subcarriers over 10MHz • Overhead • Guard band – 32 subcarriers • CP - 6.51 us • Control overhead – 6 tiles (96 subcarriers) in FL with 10% power overhead, one CDMA subsegment (128 subcarriers) every 8 frames and 2 tiles (32 subcarriers) for R-ACKCH every frame • Superframe preamble – one out of 26 frames (3.85%) • Scheduler – Equal resource scheduler (similar to proportional fair) • Power control – No power control for FL. OSI-based power control for RL with DataCtoI range [-3dB,10dB] and IoTtarget 7.5dB • Antenna configurations • SIMO1x2 for FL and RL • MIMO2x2 with precoding (64 precoding matrices used) and rank selection for FL

  9. ~ Full Queue Traffic Model ~ Simulation Results • Forward link (Downlink) • Reverse link (Uplink)

  10. Simulation Conditions for VoIP Traffic Model • System bandwidth – 480 subcarriers over 5MHz • Overhead • Guard band – 32 subcarriers • CP - 6.51 us • Control overhead – 4 tiles (64 subcarriers) in FL with 26% power overhead, 160 subcarriers in RL, including one CDMA subsegment (128 subcarriers) and 2 tiles (32 subcarriers) for R-ACKCH • Superframe preamble – one out of 26 frames (3.85%) • Power control – Target termination based power control. • Antenna configurations – SIMO1x2 for FL and RL

  11. ~ VoIP Traffic Model ~ Simulation Results • Forward link (Downlink) * Since the VoIP system is RL limited, though the FL VoIP capacity is far more than 350, we did not simulate to find the actual number. • Reverse link (Uplink)

  12. Conclusions • This contribution summarizes activities in TSG-C WG3 EMAH for UMB characterization • Calibration of both link- and system-level simulations has been almost completed • UMB performance results are provided using NGMN simulation conditions.

  13. References [1] 3GPP2, “Ultra Mobile Broadband (UMB) Air Interface Specification,” C.S0084-000~009 v.2.0, Sep. 2007. [2] NGMN Alliance, “NGMN Performance Evaluation Methodology” Version 1.2, June 2007.

  14. Appendix A ~ Examples of link level simulation results ~

  15. Link level results (1) • FL, BRCH, 8 tiles, PF#10 H: Huawei S: Samsung K: KDDI Q: Qualcomm A: Alcatel-Lucent AV: Averaged values

  16. Link level results (2) • RL, 1 tiles, PF#5 H: Huawei S: Samsung K: KDDI Q: Qualcomm A: Alcatel-Lucent AV: Averaged values

  17. Appendix B ~ System level simulation results for calibration~

  18. System level simulation results (1)~ FL, Full-buffer Traffic, Ped-B w/ 3km/h ~

  19. System level simulation results (2) ~ FL, VoIP Traffic, Ped-B w/ 3km/h ~

  20. System level simulation results (3) ~ RL, VoIP Traffic, Ped-B w/ 3km/h ~

  21. Appendix C ~ Backup slides for simulation results under NGMN setup~

  22. ~ Full Queue Traffic Model ~ Simulation Results (1)

  23. ~ Full Queue Traffic Model ~ Simulation Results (2)

  24. ~ Full Queue Traffic Model ~ Simulation Results (2)

  25. ~ VoIP Traffic Model ~ Simulation Results (1)

  26. ~ VoIP Traffic Model ~ Simulation Results (2)

  27. ~ VoIP Traffic Model ~ Simulation Results (2)

More Related