Presentation is loading. Please wait.

Presentation is loading. Please wait.

Doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 1 Simulation on Aggregate Interference from Wireless Access Systems.

Published byKristian Brooks Modified over 8 years ago

Similar presentations

Presentation on theme: "Doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 1 Simulation on Aggregate Interference from Wireless Access Systems."— Presentation transcript:

1 doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 1 Simulation on Aggregate Interference from Wireless Access Systems including RLANs into Earth Exploration-Satellite Service in the 5250-5350 MHz Band Spectrum Engineering Branch Industry Canada March, 2002

2 doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 2 BACKGROUND

3 doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 3 Current Canada/United States/CEPT provisions for RLAN applications 5725 5150 5250 5460 5350 5650 5470 5570 5850 MHz LE-LANs permitted through Footnote C39A LE-LANs permitted through Footnote C39A UNII devices permitted under Part 15 rules UNII devices permitted under Part 15 CEPT MOBILE SERVICE: RLAN devices MOBILE SERVICE: RLAN devices

4 doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 4 Current ITU Allocation FSS(E-s) EESS MARITIME RADIONAV 5725 MHz 5150 5250 5460 5350 5650 5470 ARNS RADIOLOC RadiolocationRADIOLOC Amateur SRS Srs (deep space) RADIONAV 5570 Note: ALL CAPS=PRIMARY ALLOCATION

5 doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 5 WRC-03 consideration MS/ms – RLANs FS/fs – FWA (R3) EESS FSS(E-s) EESS MARITIME RADIONAV 5725 MHz 5150 5250 5460 5350 5650 5470 ARNS RADIOLOC RadiolocationRADIOLOC Amateur SRS Srs (deep space) RADIONAV 5570 SRS RADIOLOCATION

6 doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 6 5850 MHz CEPT 5725 MHz MS/ms – RLANs FS/fs – FWA (R3) EESS FSS(E-s) EESS MARITIME RADIONAV 5150 5250 54605350 5650 5470 ARNS RADIOLOC Amateur SRS Srs (deep space) RADIONAV 5570 SRS RADIOLOCATION LE-LAN: Footnote C39A LE-LANs Footnote C39A UNII : Part 15 rulesUNII: Part 15 MS Overall Comparison of Allocations and provisions for RLANs and other services in the 5GHz range

7 doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 7 Current Canada/United States/CEPT technical rules for RLAN applications 5725 5150 5250 5460 5350 5650 5470 5570 5850 MHz CEPT Indoor Only EIRP = 200 mW ATPC, DFS Indoor/Outdoor EIRP = 1W ATPC, DFS Indoor Only EIRP = 200 mW Indoor/Outdoor Tx Power=1W EIRP=4W Indoor/Outdoor Tx Power =250 mW EIRP = 1W Indoor Only EIRP =200 mW Indoor/Outdoor Tx Power= 1W EIRP= 4W Indoor/Outdoor Tx Power= 250 mW EIRP = 1W

8 doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 8 Characteristics of EESS

9 doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 9 Characteristics of EESS in the 5GHz range Radar scatterometers –useful for determining the roughness of large objects such as ocean waves Radio altimeters –used to determine the height of the Earth's land and ocean surfaces Imaging radars (synthetic aperture radars) –used to produce high resolution images of land and ocean surfaces. In this analysis only one of the imaging radars (SAR 4-most sensitive) and altimeters were examined MS/ms – RLANs FS/fs – FWA (R3) EES 5250 5350 MHz RADIOLOC SRS

10 doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 10 Characteristics of SARs in the 5 GHz range ParameterSAR 2SAR 3SAR 4 Orbital Altitude600 km (circular)400 km (circular) Orbital inclination57 degrees Frequency5405 MHz 5300 MHz Peak Radiated Power4800 W1700 W Pulse Bandwidth310 MHz 40 MHz Antenna Orientation20-38 deg from nadir20-55 deg from nadir Receiver Noise Figure4.62 dB Footprint164.3 km 2 225.3 km 2 76.5 km 2 Receiver Bandwidth356.5 MHz 46 MHz Noise Power-113.84 dBW -122.73 dBW Interference Threshold-119.84 dBW -128.73 dBW Source: ITU-R Doc 8A-9B/98

11 doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 11 Characteristics of outdoor WAS/RLANs

12 doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 12 Outdoor WAS in the 5250-5350 MHz Range ParameterValue Frequency5.3 GHz Bandwidth20 MHz Antenna Gain Pattern – azimuth planeOmnidirectional (for simulation purposes) Antenna Gain pattern – elevation plane Implicit within proposed EIRP mask to be shown later Antenna tilt0 degrees Cell radius1.5 km Transmitter Power250 mW Scattering Coefficient17 dB Active Ratio100%

13 doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 13 EIRP mask used in simulation -14 dBW/MHz for 0° ≤  < 5 ° -14 -0.711 (  -5) dBW/MHzfor 5° ≤  < 40 ° -38.9 -1.222(  -40) dBW/MHzfor 40° ≤  < 45 ° -45 dBW/MHzfor  > 45 °  =elevation angle above the local horizon For  <0, EIRP= -13 dBW/MHz

14 doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 14 Characteristics of indoor WAS/RLANs

15 doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 15 Characteristics of Indoor WAS systems Indoor Type 1Indoor Type 2 ParameterValue Frequency5.3 GHz Bandwidth20 MHz AntennaIsotropic (for simulation purposes) Antenna gain0 dBi Transmitter power 250 mW200 mW Building loss18 dB Active Ratio100%

16 doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 16 Distribution of WAS/RLANs

17 doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 17 Distribution of WAS/RLANs Based on population data from the UN, cell radius of WAS/RLANs and perceived deployment rate. Deployment factor of 30% was used. See ITU-R Doc. 8A-9B/83 City A (extremely large city) –Population = 17.6 million –Include effects of stations operating in sub-urban areas surrounding the city as well as to simulate effects of aggregate interference from stations operating in near-by cities, the radius was extended from 54 km to approximately 81 km. City B (medium size city) –Population = 3.7 million –Radius of this city = approximately 12 km. An actual radius of 18 km was used to account for effects from stations operating in sub-urban areas as well as effects from near-by cities.

18 doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 18 Distribution of WAS/RLANs Case 1Case 2Case 3 IndoorIndoor Type 1Indoor Type 2Indoor Type 1 Number of active systems440 Deployment Area (km 2 )76.5 Density (number of active systems/km 2 ) 5.75 OutdoorLarge city City A Medium city City B Number of active systems870 43 Deployment Area (km 2 )13122 648 Density (number of active systems/km 2 ) 0.066

19 doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 19 Methodology Within each cell: –one station transmitting at all times One-third of all transmitters has an additional scattering coefficient of 17 dB 3dB polarization loss for outdoor systems 0dB polarization loss for indoor systems no atmospheric attenuation is assumed The satellite was simulated to run for a period of 30 days, the period of time in which the EESS would receive maximum interference was then revisited with time steps of 200 milliseconds. The results shown here represent a period of time in which the EESS would be visible by the WAS systems in a single orbit in which EESS would experience the maximum possible interference from the aggregate interference of WAS. Free space propagation Building loss = 18 dB

20 doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 20 Simulation

21 doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 21 Results of simulation

22 doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 22 Aggregate interference from indoor and outdoor WAS into SAR 4 at 20 degrees from nadir

23 doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 23 Aggregate interference from indoor and outdoor WAS into SAR 4 at 55 degrees from nadir

24 doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 24 Aggregate interference from indoor and outdoor WAS into an altimeter

25 doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 25 Summary of Result EESSSAR 4 @ 20deg from nadirSAR 4 @ 55deg from nadirAltimeter WAS (see Table 7) Case 1Case 2Case 3Case 1Case 2Case 3Case 1 Interference criterion (dBW/MHz) (100% of the time) -145.36 -143.05 Maximum interference (dBW/MHz) -142.9-143.8-143.9-138.3-139.1-138.7-- Duration of time in which Interference > Interference criterion 1.6 sec1.4 sec1 sec3.2 sec 2.8 sec0

26 doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 26 Observations Actual deployment of WAS indoor and outdoor is expected to be less than what is assumed in this analysis. The result represents worst case interference for the EESS –interference is expected to be less at any other time.

27 doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 27 EIRP mask Based on comparison of results between City A and City B, the EIRP mask for outdoor WAS can be increased by at least 3 dB and the interference criterion for the SAR should still be met for the vast majority of cities in the world. Hence, the EIRP mask can be modified as follows: -11 dBW/MHz0    <5  -11 - 0.711(  –5) dBW/MHz 5    < 40  -35.9 - 1.222 (  - 40) dBW/MHz40   < 45  -42 dBW/MHz   45  where  is the elevation angle above local horizon in degrees. However, since a maximum EIRP of 1W (-13 dBW/MHz) is allowed, the proposed EIRP mask then becomes…

28 doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 28 Proposed EIRP mask for outdoor WAS/RLANs -13 dBW/MHz0    <5  -13 - 0.711(  –5) dBW/MHz 5    < 40  -35.9 - 1.222 (  - 40) dBW/MHz40   < 45  -42 dBW/MHz   45  where  is the elevation angle above local horizon in degrees.

29 doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 29 Further Simulation

30 doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 30 Further simulation Regulatory concerns on how to enforce the proposed outdoor EIRP mask Simulation performed for SAR 4 operating at 55 degrees from nadir Assumed ALL of the WAS/RLANs were pointing upward, although still using the EIRP mask as proposed. Pointing angles assumed: 0 to 10 and 0 to 20 degrees

31 doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 31 Further simulation

32 doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 32 Conclusion

33 doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 33 Conclusion With respect to sharing between EESS and WAS/RLANs in the 5250-5350 MHz –Sharing appears to be feasible given that indoor systems have a maximum EIRP of 250 mW and that outdoor systems employ certain technical constraints such as the EIRP mask as proposed With respect to sharing between EESS and WAS/RLANs in the 5470-5570 MHz range –Further studies are required to examine the impact on wideband SARs (SAR 2 and SAR 3) Not covered in this presentation – sharing between WAS/RLANs and Radiolocation in the 5GHz range

Download ppt "Doc.: IEEE 802.11-RR-02/036 Submission March 2002 Rebecca Chan, Industry CanadaSlide 1 Simulation on Aggregate Interference from Wireless Access Systems."

Similar presentations

Doc.: IEEE 802.11-RR-02/035r0 Submission March 2002 Rebecca Chan, Industry CanadaSlide 1 Canadian Proposals for the WRC-03 on 5GHz RLAN issues Spectrum.

Doc.: IEEE RR-02/035r0 Submission March 2002 Rebecca Chan, Industry CanadaSlide 1 Canadian Proposals for the WRC-03 on 5GHz RLAN issues Spectrum.
Bryan HUNEYCUTT (NASA/JPL) WMO, Geneva, Switzerland 7 October 2002

Bryan HUNEYCUTT (NASA/JPL) WMO, Geneva, Switzerland 7 October 2002
1 HAP Spectrum Sharing Studies in the 28/31 GHz Band Y.H. Kang.

1 HAP Spectrum Sharing Studies in the 28/31 GHz Band Y.H. Kang.
K. Liewer ANITA-Irvine CA 11/24/02 Anthropogenic Background K. Liewer.

K. Liewer ANITA-Irvine CA 11/24/02 Anthropogenic Background K. Liewer.
Doc.: IEEE 802.11-15/0630r0 Submission May 2015 Intel CorporationSlide 1 Verification of IEEE 802.11ad Channel Model for Enterprise Cubical Environment.

Doc.: IEEE /0630r0 Submission May 2015 Intel CorporationSlide 1 Verification of IEEE ad Channel Model for Enterprise Cubical Environment.
Summary of Path Loss in Propagation

Summary of Path Loss in Propagation
Electromagnetic Wave Theory

Electromagnetic Wave Theory
July 2015 doc.: IEEE /XXXXr0 July 2015

July 2015 doc.: IEEE /XXXXr0 July 2015
Transmission Media / Channels. Introduction Provides the connection between the transmitter and receiver. 1.Pair of wires – carry electric signal. 2.Optical.

Transmission Media / Channels. Introduction Provides the connection between the transmitter and receiver. 1.Pair of wires – carry electric signal. 2.Optical.
National Science Foundation 1 Dr. Tomas E. Gergely Electromagnetic Spectrum Manager National Science Foundation Registration of Radio.

National Science Foundation 1 Dr. Tomas E. Gergely Electromagnetic Spectrum Manager National Science Foundation Registration of Radio.
Proposed revision of ITU-R Recommendation providing EESS (active) Performance and Interference Criteria May 13, 2015 Committee On Radio Frequencies Thomas.

Proposed revision of ITU-R Recommendation providing EESS (active) Performance and Interference Criteria May 13, 2015 Committee On Radio Frequencies Thomas.
2015 World Radiocommunication Conference Agenda Items Affecting EESS (active) May 29, 2014 Committee On Radio Frequencies Thomas vonDeak NASA Spectrum.

2015 World Radiocommunication Conference Agenda Items Affecting EESS (active) May 29, 2014 Committee On Radio Frequencies Thomas vonDeak NASA Spectrum.
Fundamental Antenna Parameters

Fundamental Antenna Parameters
Doc.: IEEE 802.11-12/0402r2 Submission May 2012 Haiming Wang, Xiaoming PengSlide 1 Date: 2012-05-14 Authors: Overview of CWPAN SG5 QLINKPAN.

Doc.: IEEE /0402r2 Submission May 2012 Haiming Wang, Xiaoming PengSlide 1 Date: Authors: Overview of CWPAN SG5 QLINKPAN.
Sharing of FWA with other services in the 5GHz band C 5725-5875MHz Private Business System Unit Radiocommunications Agency.

Sharing of FWA with other services in the 5GHz band C MHz Private Business System Unit Radiocommunications Agency.
1 RLAN and C Band Weather Radar Interference Studies* Paul Joe 1, John Scott 1, John Sydor 2, Andre Brandao 2, Abbas Yongacoglu 3 1 Meteorological Service.

1 RLAN and C Band Weather Radar Interference Studies* Paul Joe 1, John Scott 1, John Sydor 2, Andre Brandao 2, Abbas Yongacoglu 3 1 Meteorological Service.
Doc.: IEEE 802.RR-01/017-r1 Submission November 2001 Vic Hayes, Agere SystemsSlide 1 Opening report Radio Regulations to Radio Working Groups November.

Doc.: IEEE 802.RR-01/017-r1 Submission November 2001 Vic Hayes, Agere SystemsSlide 1 Opening report Radio Regulations to Radio Working Groups November.
Calculator functions 1 WRAP 0966B. Calculator functions in WRAP Different calculation functions in different dialogues Geographical calculations General.

Calculator functions 1 WRAP 0966B. Calculator functions in WRAP Different calculation functions in different dialogues Geographical calculations General.
Frequency Sharing Study between FWA & FSS in the band 5725 - 5875 MHz David Bryant Wireless Networks Presentation to UK W-LAN Advisory Group (Sharing &

Frequency Sharing Study between FWA & FSS in the band MHz David Bryant Wireless Networks Presentation to UK W-LAN Advisory Group (Sharing &
Meteorological Spectrum Issues- Outcome of the 2003 World Radiocommunication Conference Presented By: David Franc National Weather Service December 2,

Meteorological Spectrum Issues- Outcome of the 2003 World Radiocommunication Conference Presented By: David Franc National Weather Service December 2,

Similar presentations

Ads by Google