Doc.: IEEE 802.22-13-0011-00-000b Submission Jan 2013 Link Budget Calculation for NICT proposal (22-12-0090- 03-000b) IEEE P802.22b Wireless RANs Date:

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doc.: IEEE b Submission Jan 2013 Link Budget Calculation for NICT proposal ( b) IEEE P802.22b Wireless RANs Date: Authors: Notice: This document has been prepared to assist IEEE 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 grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE Patent Policy and Procedures: The contributor is familiar with the IEEE 802 Patent Policy and Procedures including the statement "IEEE standards may include the known use of patent(s), including patent applications, provided the IEEE receives assurance from the patent holder or applicant with respect to patents essential for compliance with both mandatory and optional portions of the standard." Early disclosure to the Working Group of patent information that might be relevant to the standard is essential to reduce the possibility for delays in the development process and increase the likelihood that the draft publication will be approved for publication. Please notify the Chairhttp://standards.ieee.org/guides/bylaws/sb-bylaws.pdf Wendong HuWendong Hu as early as possible, in written or electronic form, if patented technology (or technology under patent application) might be incorporated into a draft standard being developed within the IEEE Working Group. If you have questions, contact the IEEE Patent Committee Administrator at Slide 1

doc.: IEEE b Submission Jan 2013 Abstract This contribution presents a link budget calculation specifically tailored for NICT proposal ( b) for IEEE b task group for an estimation of maximum communication range provided by the proposal. In practice, a b system should be designed to cover an area by around 10 km in direct communication. While, a b can support a regional area as it can be supported by a legacy system Slide 2

doc.: IEEE b Submission Assumption LOS propagation model (ITU-R Rec. P model) is considered [1]. (Location probability= 50%, time probability = 99.9% ) Transmitter PSD emission limit follows FCC Third MO&O H-CPE, L-CPE and base station follow the following settings. Assume there is a penetration loss (approx 10 dB) when signal is travelled from indoor to outdoor or vice versa. Assume fade margin to be 20 dB [2], which allows for a more robust transmission. H-CPEL-CPEBase Station Max EIRP (dBm)30 36 Antenna Height AGL (m)1~30 30 Modefixedportablefixed Locationoutdoorindooroutdoor Slide 3 Jan 2013

doc.: IEEE b Submission Downstream ParameterBS to H- CPE BS to L- CPE H-CPE to L-CPE H-CPE to H- CPE Bandwidth6 MHz Average EIRP power (dBm) Penetration loss (dB)10 Required Rx power at d km (dBm) Path loss at d km (dB) The table below calculates the path loss for different cases [3]. These values are used later for the calculation of communication range. Slide 4 Jan 2013

doc.: IEEE b Submission Downstream Diff in height bet 2 entities (m) BS to H- CPE (km) H-CPE to L- CPE (km) H-CPE to H-CPE (km) This table gives a complete view for 3 cases when the heights between 2 entities varied from 0 m to 29 m Example -Typical case (around 15km) - Maximum case (around 18km) Typical caseMaximum case Slide 5 Jan 2013

doc.: IEEE b Submission Upstream ParameterH-CPE to BSL-CPE to BS L-CPE to H-CPE H-CPE to H-CPE Bandwidth6 MHz Average EIRP power (dBm) 30 Penetration loss (dB)10 Required Rx power at d km (dBm) Path loss at d km (dB) The table below calculates the path loss for different cases. These values are used later for the calculation of communication range. Slide 6 Jan 2013

doc.: IEEE b Submission Diff in height bet 2 entities (m) H-CPE to BS (km) L-CPE to H- CPE (km) H-CPE to H- CPE (km) Upstream This table gives a complete view for 3 cases when the heights between 2 entities varied from 0 m to 29 m Example -Typical case (around 14km) - Maximum case (around 16km) Slide 7 Typical caseMaximum case Jan 2013

doc.: IEEE b Submission Conclusion We made a very conservative calculation here by assuming –Penetration loss (~ 10 dB) –Fade margin (~20 dB) From calculations, we find out that: In practice, a b system is desired to design to cover an area by around 10 km in direct communication While, a b can support a regional area as it can be supported by a legacy system Direct comm. 2-hop comm. Downstreamaround 12 kmMax: around18 km Typical: around16 km Upstreamaround 11 kmMax: around 16 km Typical: around 14 km Slide 8 Jan 2013

doc.: IEEE b Submission Reference [1] Recommendation ITU-R P “Method for point- to-area predictions for terrestrial services in the frequency range 30 MHz to 3000 MHz” [2] Seiichi Sampei, “Applications of Digital Wireless Technologies to Global Wireless Communication” Prentice Hall PTR, Upper Saddle River, NJ [3] “Preliminary Link Budget Analysis for b” document no: b Slide 9 Jan 2013

doc.: IEEE b Submission APPENDIX Slide 10 Jan 2013

doc.: IEEE b Submission ITU-R P The curves were prepared from data obtained mainly from temperate climates as encountered in Europe and North America [1]. The following linear interpolation equation in dB is used for calculation of antenna height and communication distance. Slide 11 Jan 2013

doc.: IEEE b Submission Case 1: BS to H-CPE Slide 12 Jan 2013

doc.: IEEE b Submission Case 2: H-CPE to BS Slide 13 Jan 2013