Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)

1. Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Summary and Recommendations to TG3c Channel Model Subgroup] Date Submitted: [16 May, 2006] Source: [Su-Khiong Yong] Company [Samsung Advanced Institute of Technology (SAIT)] Address [RF Technology Group, Comm. & Networking Lab., P. O. Box 111, Suwon 440-600, Korea] Voice:[+82-31-280-9581], FAX: [+82-31-280-9555],E-Mail: [su.khiong.yong@samsung.com] Re : [IEEE 802.15.3c Channel modeling] Abstract: [Recommendations for the 3c Channel Model Subgroup] Purpose:[This document discusses the propagation issues and parameters for IEEE 802.15.3c] Notice :This document has been prepared to assist the IEEE P802.15. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. Release:The contributor acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P802.15. Su-Khiong Yong, Samsung-SAIT

2. Summary and Recommendations to TG3c Channel Modeling Subgroup Su-Khiong Yong Samsung Advanced Institute of Technology (SAIT), Korea Su-Khiong Yong, Samsung-SAIT

3. Outline • Objectives • Status of the Channel Model • Summary and Proposed Set of the Channel Models • Future Plan Su-Khiong Yong, Samsung-SAIT

4. Objective • To review the results of the channel data analysis • To make recommendations on the proposed set channel models for TG3c • Define future work Su-Khiong Yong, Samsung-SAIT

5. Status of the Work • IBM data analysis remains unresolved – unable to distinguish LOS and NLOS data • UMASS data measurements and analysis are still on going • IMST data analysis completed • NICTA data analysis – amplitude statistics yet to be completed, AOA intra cluster statistics are yet to revised • FT completed the channel parameters Su-Khiong Yong, Samsung-SAIT

6. UMASS – Office (LOS & NLOS) and Conference Room (LOS & NLOS) • Measurements are still on going • Proposed AWGN channel but rays with significant delay can be observed. • AOA statistics are yet to determined. Su-Khiong Yong, Samsung-SAIT

7. IMST Results – Library LOS • Inter-cluster Power Delay Profile parameters • Exponential PDP:K factor KLOS= 8 [dB], cluster decay Γ = 12 [ns] • Flat-Exponential PDP: K factor KLOS= 8 [dB], cluster decay Γ = 12 [ns], Δ = 11 [dB], τ = 30 [ns] • Inter-cluster DoA – Uniform distribution • Intra-cluster DoA – Gaussian (Angles Spread (AS) σAS = 10 [0]) • Inter-cluster ToA / Intra-cluster ToA – Poisson (Λ = 0.25 [ns-1] / λ = 4 [ns-1]) • Cluster / Ray amplitude – Log-normal (σ1 = 5 [dB] / σ2 = 6 [dB]) • Intra-cluster K factor KMP= -13 [dB] • Intra-cluster ray decay γ = 7 [ns] • Shadowing effect can be modeled by dropping the LOS component and keeping the other parameter unchanged for LOS scenario. • Final Refinement • Check the AOA distribution with truncated Gaussian • What is the average number of clusters? • Inter cluster DOA uniform over [0,2pi]? Su-Khiong Yong, Samsung-SAIT

8. NICT Results –Desktop LOS Su-Khiong Yong, Samsung-SAIT

9. NICTA Results – Office NLOS Su-Khiong Yong, Samsung-SAIT

10. NICTA Results – Desktop LOS Su-Khiong Yong, Samsung-SAIT

11. NICTA Results – Residential LOS Su-Khiong Yong, Samsung-SAIT

12. Open Issues • Amplitude statistics is claimed to be log-normal without presenting the result? • Issue on the average number of clusters has no yet resolved. The proposed values does not seem to match with the previous results. • Uncertainties about the AOA statistics in Desktop environment. The Gaussian distribution does not model well the AOA. Maybe Truncated Gaussian / Truncated Laplacian can do the job. • Some of the analysis such as ray and cluster arrivals are very crude. Need to revisit the fittings of these results? • Several set of parameters for different antenna configurations are missing for the NICT measurements. Su-Khiong Yong, Samsung-SAIT

13. France Telecom Results 06/218 Large scale fading Su-Khiong Yong, Samsung-SAIT

14. France Telecom Results 06/218 Small Scale Fading No distribution for amplitude statistics are provided. Also no cluster and ray arrival rates Su-Khiong Yong, Samsung-SAIT

15. France Telecom AOA for office environment only No AOA and EOA distributions are provided • 2 types of antennas were used during the experiment. • - horns presenting a gain of 7.3 dBi and -3 dB beamwidth of 100° in both azimuth and elevation. • dipoles presenting a gain of 5.5 dBi and an omnidirectional radiation pattern in azimuth with • a -3 dB beamwidth of 30° in elevation, centered around the elevation of 45°. Su-Khiong Yong, Samsung-SAIT

16. Blue not available Su-Khiong Yong, Samsung-SAIT

17. Proposed Set of Channel Models • Residential – LOS (CM1) and NLOS (CM2) • Office – LOS (CM3) and NLOS (CM4) • Library – LOS (CM5) and NLOS (CM6) • Conference Room – LOS (CM7), NLOS (CM8) • Desktop – LOS (CM9) • Additional sets of above models with different antenna gains? Blue not available Su-Khiong Yong, Samsung-SAIT

18. Available Channel Models • Residential – LOS (CM1) • Office –NLOS (CM4) • Library – LOS (CM5) • Conference Room – NA • Desktop – LOS (CM9) Blue not available Su-Khiong Yong, Samsung-SAIT

19. Motion • Motion by J. Gilb and seconded by A. Sadri • For channel models to be included in the TG3c Channel Model Document (15-06-0195-xx-003c), all proposed channel models shall be posted to 802Wirelessworld by Aug 25, 2006 AOE • Yes - 27, No-1 , Abstain-4 Su-Khiong Yong, Samsung-SAIT

20. Discussions • No path loss model available from the measurements. Adopt results from literature? • Should the group move with 4 channel models that represent four environments for evaluation purposes? Su-Khiong Yong, Samsung-SAIT

21. Future Plan • NICTA needs to update on the issues raised during this meeting. Email will be send to reflector. • Issue about large scale fading • Final report drafting • Matlab code generation by the contributors and Rick Roberts will coordinate that. Su-Khiong Yong, Samsung-SAIT