August 2004 doc.: IEEE 802.15-04/444r0 August 2004 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: Propagation Pathloss for TG4 Range Issue Date Submitted: 24 August 2004 Source: Colin Lanzl Address: 83 Nottingham Drive, Nashua, New Hampshire, 03062, USA Voice: 781-687-0578, FAX: 781-276-4001, E-Mail: clanzl@ieee.org Re: Pathloss model for TG4 in support of TG4a range comparison. Abstract: This document provides a pathloss model to be used to determine TG4 device ranges for use in comparing proposals for TG4a. Purpose: This document is provided in support of TG4a activities. 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. Colin Lanzl, Kai Siwiak Colin Lanzl, Kai Siwiak

Propagation Pathloss modeling August 2004 Propagation Pathloss modeling Colin Lanzl clanzl@ieee.org Kai Siwiak k.siwiak@ieee.org Paul Gorday paul.gorday@motorola.com Colin Lanzl, Kai Siwiak

Propagation pathloss model description August 2004 doc.: IEEE 802.15-04/444r0 August 2004 Propagation pathloss model description Model provides for free-space propagation (1/r2) in a near-zone propagation and far-zone propagation as 1/r  Model provides for a breakpoint, dt, between near-zone and far-zone Model can be used for both narrow-band and wide-band applications With suitable definition of dt and g, model can be used for both indoor and two-ray propagation Colin Lanzl, Kai Siwiak Colin Lanzl, Kai Siwiak

Model PL(d )= -10log{[c/(4pdfm)]2 [1-exp(-(dt /d)g-2)]}, August 2004 doc.: IEEE 802.15-04/444r0 August 2004 Model PL(d )= -10log{[c/(4pdfm)]2 [1-exp(-(dt /d)g-2)]}, which can also be written: PL(d )= PLFreeSpace(d ) – 10log[1-exp(-(dt /d)g-2)] where: PL: pathloss, dB d: distance between transmitter and receiver fm: geometric mean of transmitted frequency band g : propagation constant after breakpoint c: velocity of propagation dt: breakpoint distance from transmitter Colin Lanzl, Kai Siwiak Colin Lanzl, Kai Siwiak

August 2004 Indoor Parameters dt is physically defined by the environment, as it represents the distance from the transmitter at which the first scatterers make their impact; suggested indoor office value is 3m; In an indoor environment ,the suggested value for g is 3.3 Colin Lanzl, Kai Siwiak

Outdoor LOS Parameters August 2004 Outdoor LOS Parameters Outdoors, Line of Sight: a two-ray model (propagation over an earth ground) is appropriate; Suggested parameters: dt=h1h24pfm/c and g=4, where: h1 and h2 are the transmit and receive antenna heights (in meters) above ground Colin Lanzl, Kai Siwiak

Outdoor Cluttered Area Parameters August 2004 Outdoor Cluttered Area Parameters Outdoors, Non-Line of Sight: is similar to indoor propagation; Suggested parameters: dt=10 m and g=3.3 Colin Lanzl, Kai Siwiak

Indoor Path Loss Models August 2004 Indoor Path Loss Models Colin Lanzl, Kai Siwiak