Radiocommunication Study Groups
Download 0.56 Mb.
|
- Navigate this page:
- Summary of simulation results
- Abbreviations
A3.1.5 ConclusionsThe indoor DL coverage at a range of frequencies above 6 GHz (up to 60 GHz) has been analysed in the context of a single-building scenario with an outdoor deployed base station and low load conditions. The specific frequencies used in the simulations (10 GHz, 30 GHz, and 60 GHz) are arbitrarily selected and intended as examples to illustrate the general trends of how coverage varies across the frequency range. Table A3–2 summarizes the presented results for the different building types, indoor models, and operating frequencies.6 In the cases where 1 BS was not enough to reach 100 Mbps, rough estimates of how many BSs would at least have been needed to reach 10 Mbps are given. A main observation, also subject to the assumptions made on propagation, antenna pattern and bandwidth size, is that outdoor-to-indoor coverage with DL user throughput higher than 10 Mbps, and in certain cases higher than 100 Mbps, is possible at 10 GHz and above. The case with carrier frequencies up to 30 GHz is more challenging but still manageable, whereas providing outdoor to indoor coverage at 60 GHz may be quite difficult for some building types. It has also been seen that the use of high gain antennas is crucial at high frequencies (30 GHz and above). In addition, it has been shown that the required site count per building, in other words the deployment density, depends on the type of the building (i.e. exterior wall material, interior layout and wall material, building size, etc.). Table A3–2 Summary of simulation results
References [1] Section 4.5.2, COST 231 Final Report, Link. [2] “An Outdoor-to-Indoor Propagation Scenario At 28 GHz”, Christina Larsson, Fredrik Harrysson, Bengt-Erik Olsson, Jan-Erik Berg. [3] “Measurements to Support Modulated-Signal Radio Transmissions for the Public-Safety Sector”, National Institute of Standards and Technology Technical Note 1546, April 2008. [4] “Building penetration measurements from low-height base stations at 912, 1920, and 5990 MHz”, NTIA Technical Report TR-95-325, Lynette H. Loew, Yeh Lo, Michael Laflin, Elizabeth E. Pol, October 1995. [5] “Propagation Losses Through Common Building Materials, 2.4 GHz vs 5 GHz, Reflection and Transmission Losses Through Common Building Materials”, Robert Wilson, University of Southern California, August 2002. [6] “EMF shielding by building materials. Attenuation of microwave band electromagnetic fields by common building materials”, Link. [7] “Radar Surveillance through Solid Materials”, Lawrence M. Frazier, Hughes Advanced Electromagnetic Technologies Center, Hughes Missile Systems Company, Rancho Cucamonga, CA. [8] “Calculation of free-space attenuation”, Recommendation ITU-R P.525-2, Link. [9] “Propagation data and prediction methods for the planning of indoor radiocommunication systems and radio local area networks in the frequency range 900 MHz to 100 GHz”, Recommendation ITU-R P.1238-7, Link. Abbreviations
Directory: 802.18 -> dcn dcn -> Radiocommunication Study Groups dcn -> Radiocommunication Study Groups dcn -> Federal Communications Commission fcc 14-154 Download 0.56 Mb. Share with your friends:
| |||||||||||||||||||||||||||||||||||||||||||