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Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANS) PowerPoint Presentation
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Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANS)

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

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

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  1. <September,2003> Doc.:IEEE802.15-03/0365 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANS) Submission Title: [Study of mm wave propagation modeling to realize WPANs ] Date Submitted: [September 2003] Revised: [] Source: [ToshiyukiHirose] Company [Siemens k.k.] Address [20-14, Higashi-Gotanda 3-Chome Shinagawa-ku, Tokyo 141-8641, Japan] Voice [+81(3) 5423-8855], Fax [+81(3) 5423-8728], E-mail [] Re: [Millimeter wave propagation characteristics] Abstract: [60GHz-band Propagation characteristics are presented in this document ] Purpose: [Contribute to mm wave interest group for WPANs] 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 or organization. The material in this document is subject to change in form and content after further study. The contributor reserves 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. Submission Slide1 <Toshiyuki Hirose>, <Siemens K.K. >

  2. <September,2003> Doc.:IEEE802.15-03/0365 Study of mm wave propagation modeling to realize WPANs The following individuals support this proposal as co-authors: Akira AKEYAMA (NTT Advanced Technology Corp.) Kouichi SAKAMOTO (Murata Manufacturing Co., Ltd.) Ami Kanazawa (Communications Research Laboratory) Submission Slide2 <Toshiyuki Hirose>, <Siemens K.K. >

  3. <September,2003> Doc.:IEEE802.15-03/0365 Study of mm wave propagation modeling to realize WPANs 60GHz-Band is expected to realize a very high rate transmission system. But due to its very large propagation loss, it will be a very short distance communication system. In this document, several propagation characteristics are presented for the promotion of new system proposals. Large propagation loss and high speed data rate transmission limit to the link budget, and Line of Sight (LoS) path is available only for communications. Maximum distance of this very short distance communication are several meters to several ten meters depending on the antenna gain. ■ Propagation loss in home environment ■ Effect of path distance for delay spread ■ Effect of desk ■ Effect of building material ■ Effect of transmitter and receiver siting ■ Effect of movement of persons in the hall  This measurement results are a summary of the experimental works done in a collaboration research project for Millimeter-wave Ad-Hoc communication in YRP. Submission Slide3 <Toshiyuki Hirose>, <Siemens K.K. >

  4. <September,2003> Doc.:IEEE802.15-03/036 Wall 1 Wall 2 Room 2 Room 3 :propagation loss :propagation distance :free space propagation loss :transparency loss of each wall Room 1 2 3 4 5 Room 1 Wall 1 Wall 1 Room 2 Kitchen Wall 2 Room 3 Living room ■ Propagation loss in a home environment An example of propagation at 60GHz loss in a home environment Submission Slide4 <Toshiyuki Hirose>, <Siemens K.K. >

  5. <September,2003> Doc.:IEEE802.15-03/0365 Indoor propagation loss parameters From ITUP.1238-1 (N=Loss Coefficient) (L=Loss factor by wall) ・Ltotal=20log10f+Nlog10d+Lf(n)-28 (dB) Results shows N=20 will be available Lf depends on the construction material of the wall Submission Slide5 <Toshiyuki Hirose>, <Siemens K.K. >

  6. 60GHz band 70GHz band Frequency 62.5GHz 70GHz Tx Power 2 dBm Polarity V Plane Horn Antenna Antenna Gain 10dBi(60°), 16(30°), 22(15°) Antenna Height 100cm TESTEquipment Vector Network Analyzer <September,2003> Doc.:IEEE802.15-03/0365 ■ Effect of path distance for Delay spread Indoor propagation characters are affected by furnishing, furniture and PC tool. Delay-Distance characteristic in both LOS and NLOS are presented Measurement Parameters Submission Slide6 <Toshiyuki Hirose>, <Siemens K.K. >

  7. Tx60°Rx30° wall Tx60°Rx60° Tx60°Rx15° Locker room desk desk Aisle-Side Tx60°Rx30° Rx ant Tx60°Rx60° Tx ant 7m 5m 18m 14m 10m 3m 2m 1m wall wall 12.5m Desk side Rx ant desk desk desk desk desk desk Tx ant 18m 14m 10m 7m 3m window 22m <September,2003> Doc.:IEEE802.15-03/0365 LOS R.M.S Delay Delay-distance characteristic in LOS and NLOS Floor plan of experimental room NLOS R.M.S Delay vs. Distance characteristic Submission Slide7 <Toshiyuki Hirose>, <Siemens K.K. >

  8. <September,2003> Doc.:IEEE802.15-03/0365 Conclusion Experimental results show in LOS propagation environment ■ Delay spread increases with site distance increase ■ Delay spread increases with antenna beam-width increase ■ No significant difference between 60GHz and 70GHz Difference of delay-distance characteristic in LOS and NLOS ■ LOS with little furniture and desk: Delays are 6 to 7nS ■ NLOS with furniture and desks: Delays are 14 to 16nS Submission Slide8 <Toshiyuki Hirose>, <Siemens K.K. >

  9. Sweep frequency 61.5GHz to 63.5GHz Antenna and beam width Horn antenna/15 degrees Polarization Vertical TX-RX distance 4 meters Experimental Room size 3.57(W)*6.85(L)*2.47(H) meters <September,2003> Doc.:IEEE802.15-03/0365 ■Effect of desk Millimeter-wave WPAN is expected to be used in homes, offices, exhibition halls and gardens. For home and office use, two ray propagation model will be applied in the case that the propagation path is set along a plane. In case of using of a note-type PC card slot on the desk, the reflection from desk plane affect the received signal level. Usually this effect is called 2-ray pass model. Measurement parameters for the 2 ray pass model Submission Slide9 <Toshiyuki Hirose>, <Siemens K.K. >

  10. <September,2003> Doc.:IEEE802.15-03/0365 Additional propagation loss from reflection of a wood desk Submission Slide10 <Toshiyuki Hirose>, <Siemens K.K. >

  11. <September,2003> Doc.:IEEE802.15-03/0365 Additional propagation loss from reflection of a metal desk Submission Slide11 <Toshiyuki Hirose>, <Siemens K.K. >

  12. <September,2003> Doc.:IEEE802.15-03/0365 Equation of 2 ray pass model D: Path length h: Path height Reflection coefficient Γ=-1(wood),{Γ=1 (metal)} Conclusion of effect of desk Experimental results show that the received signal decreased significantly and increased up to 6dB according to the location of the terminal. This additional propagation loss will impose restrictions on system design concepts Submission Slide12 <Toshiyuki Hirose>, <Siemens K.K. >

  13. <September,2003> Doc.:IEEE802.15-03/0365 Exact solution for the Fresnel zone radius For checking the correctness of the 2 ray model, Fresnel zone radius shall be calculated. The currently used equation is an approximation, and to confirm the actual radius, an exact equation was introduced as below Exact solution Approximation Submission Slide13 <Toshiyuki Hirose>, <Siemens K.K. >

  14. <September,2003> Doc.:IEEE802.15-03/0365 Angle difference from Axis Variation of Visibility Angle by Distance 60GHz Fresnel Zone Radius Exact solution of Fresnel zone (Distance 4m) Submission Slide14 <Toshiyuki Hirose>, <Siemens K.K. >

  15. <September,2003> Doc.:IEEE802.15-03/0365 ■ Effect of building material Indoor propagation characteristics are affected by reflection from and transmission through the building material. Penetration loss is an essential factor to consider for the re-use of frequency in mm-WPAN Measured penetration loss of wall-materials in 60GHz-band Submission Slide15 <Toshiyuki Hirose>, <Siemens K.K. >

  16. Transmitter Antenna Receiver Antenna Wooden made Arch Incident Angle θ θ θ Material under Test Radius 1m 1 Reference Plane Adjuster Styrene Foam Absorber <September,2003> Doc.:IEEE802.1-03/0365 Complex permittivity of construction materials To calculate the reflection and transmission characteristics from/through the building material, the complex permittivity of construction materials are indispensable. Complex permittivity measuring system Submission Slide16 <Toshiyuki Hirose>, <Siemens K.K. >

  17. <September,2003> Doc.:IEEE802.15-03/0365 An Example of measurement Concrete Equivalent complex permittivity of some construction materials Submission Slide17 <Toshiyuki Hirose>, <Siemens K.K. >

  18. <September,2003> Doc.:IEEE802.15-03/0365 ■ Effect of movement of persons in the exhibition hall  Statistical characteristic of shadowing loss due to human movement was measured. The width of the exhibition hall: 22m*13m (wooden inner walls) Measurement Parameters Submission Slide18 <Toshiyuki Hirose>, <Siemens K.K. >

  19. Measurement Procedure and Scenery Exhibition Booth 10.8m 7.3m 3.3m LoS path TxAnt. Rx Ant. <September,2003> Doc.:IEEE802.15-03/0365 The width of the hall : 22m×13m (wooden inner walls) An exhibition hall scenery Measurement layout in an exhibition hall Submission Slide19 <Toshiyuki Hirose>, <Siemens K.K. >

  20. Variation of Received Signal <September,2003> Doc.:IEEE802.15b-03/0365 Sample measurement Submission Slide20 <Toshiyuki Hirose>, <Siemens K.K. >

  21. The Variation of Averaged Continuous Shadowing Durations People are apt to move slantwise to the LoS path. Shadowing duration is independent from distance. <September,2003> Doc.:IEEE802.15-03/0365 The difference of shadowing duration becomes clearly dependent on path length. Submission Slide21 <Toshiyuki Hirose>, <Siemens K.K. >

  22. Conclusion of shadowing duration <September,2003> Doc.:IEEE802.15-03/0365 Shadowing Duration  ・Attenuation = 15~30dB : Shadowing duration depends on path distance.  ・Attenuation > 30dB : Shadowing duration is independent from path distance. Submission Slide22 <Toshiyuki Hirose>, <Siemens K.K. >

  23. <September,2003> Doc.:IEEE802.15-03/0365 Reference T.Suzuki, et al, “Millimeter-wave Ad-Hoc Wireless Access System-(9)RMS Delay Measurements In Indoor Radio Channels-“TSMMW2002,p-9(2002-03) N.Sakamoto, et al, “Indoor propagation Experiment at 60GHz and 70GHz-A study of propagation characteristic in an office environment-“ TECNICAL REPORT OF IEICE.RCS2002-3001,pp157-162(2003-03) N.Kuribayashi, et al, “Millimeter-wave Ad-Hoc Wireless Access SystemⅡ-(4) (4)Receiving Power Time Variation Characteristics in 70GHz Band Indoor Propagation–“ TSMMW2003,2-4,(2003-03) F.Ohkubo, et al, “Millimeter-wave Ad-Hoc Wireless Access SystemⅡ-(5)Statistical characteristic of shadowing loss due to human movement –“ TSMMW2003,2-5,(2003-03) N.Kuribayashi, et al, “Millimeter-wave Ad-Hoc Wireless Access System-(8)60GHz Band propagation Loss Characteristics Along the Surface of Wooden/Metallic Desk Planes-“ TSMMW2002,p-8(2002-03) T.Hirose, et al, “Millimeter-wave Ad-Hoc Wireless Access System-(7) Strict Solution of Fresnel Zone Radius and Visibility Estimation-“ TSMMW2002,p-8(2002-03) Submission Slide23 <Toshiyuki Hirose>, <Siemens K.K. >