International Civil Aviation Organization
ACP-WG S
Webmeeting07
/ WP03
WORKING PAPER
AERONAUTICAL COMMUNICATIONS PANEL (ACP)
7th WEB MEETING OF THE WORKING GROUP S (Surface)
12 Sep, 2014
AeroMACS Mobile Station Requirements
Presented by
Prepared by Naoki Kanada, Kazuyuki Morioka, Yasuto Sumiya, Naruto Yonemoto,
Akiko Kohmura, Shunichi Futatsumori, and Takeshi Tomita
Electronic Navigation Research Institute (ENRI) / Japan
SUMMARY
ENRI reports preliminary results of AeroMACS prototype evaluation
performed at Sendai Airport. We found that receiver sensitivity cannot
measure during taxiing.
ACTION
The ACP WG-S is invite to recognize the problems and modify the
definition in current AeroMACS draft SARPs. Section 4.2 should be divided
into static and dynamic requirements.
1.
INTRODUCTION
1.1
ENRI made an AeroMACS prototype system. We report the preliminary results of
AeroMACS prototype evaluation performed at Sendai Airport from Sep 03 to Sep 05, 2014. Various data
are collected by taxiing vehicle on the airport up to 90km/h (50kts). The other data are currently under
analysis.
2.
THROUGHPUT AND PACKET ERROR RATE
2.1
In most area of the airport, downlink throughput is greater than 4Mbits/sec. However,
some cases are found that Packet Error Rate (PER) is more than 0.48% in downlink 64QAM mode when
taxiing speed is 90 kilometers per hour (about 50 nautical miles per hour). The problem is not occurring
in 30 kilometers per hour.
2.2
This experiments were intended to verify current SARPs, however, signal strength varies
significantly during taxiing, so receiver sensitivity cannot measure during taxiing. So, it is necessary to
change the description of the SARPs to determine experimentally whether SARPs compliance or not.
(4 pages)
Document1
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3. ACTION BY THE MEETING
3.1
ACP WG-S is invited to recognize the issues and modify the definition in current AeroMACS
draft SARPs.
3.2
Section 4.2 requires all of the section 3 when operating with any Doppler velocity up to 50
nautical miles per hour. However, we found that receiver sensitivity cannot measure during taxiing.
Therefore, 4.2.1 should be described as separate items of static requirements and requirements during
taxiing.
4.
REFERENCES
[1] ICAO: “Draft AeroMACS SARPs”, ICAO ACP WGS Webmeeting3 WP01, March 2014
[2] IEEE 802.16-2009 “IEEE Standard for Local and metropolitan area networks Part 16: Air Interface for
Broadband Wireless Access Systems,” May 2009
[3] J. M. Budinger and E. Hall, “Aeronautical Mobile Airport Communications System (AeroMACS),”
National Aeronautics and Space Administration, Glenn Research Center, 2011.
[4] Kanada et. al, “Signal evaluation on airport surface in 5.1Ghz band”, Integrated Communications,
Navigation and Surveillance Conference (ICNS), Herndon, VA, April 22-25, 2013.
[5] Morioka et.al, “Experiments of VoIP using WiMAX System and Fading Simulator with Two-Path
Models for Aeronautical Scenarios”, Integrated Communications, Navigation and Surveillance
Conference (ICNS), Herndon, VA, April 8-10, 2014
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ACP-WGS
Webmeeting07 /
WP03
ATTACHMENT: AEROMACS PROTOTYPE EVALUATION SYSTEM
1.
EXPERIMENTAL SETUP
1.1
ENRI AeroMACS prototype system consists of Mobile Stations (MS), Base Stations
(BS), and a back-hole system. It works in 5091-5150 MHz and bandwidth of the system is 5MHz. The
system is based on current ICAO draft SRAPs. Figure 1 shows AeroMACS evaluation system overview,
and Figure 2 illustrates AeroMACS evaluation system setup. The BSs and the back-hole system are
installed in ENRI Iwanuma brunch nearby Sendai Airport. The back-hole system includes an Access
Service Network Gateway, Home Agent server, Authentication Authorization Accounting server, Base
Station Operation and Maintenance Center server, and a layer 3 switch.
Figure 1. AeroMACS evaluation system overview
ACP-WGS Webmeeting07 / WP03
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Figure 2. AeroMACS evaluation system setup
1.2
Figure 3 shows BS antennas installation. 2 antennas on the tower of 30m high are
connected to a BS. The BS has 2 antenna ports. Output powers of each port are 200mW. The gains of the
antennas are 11dBi. The antennas are horizontally Omni-directional. The antennas are arranged to be
parallel with the runway 12/30 of Sendai Airport.
Figure 3. Base Station antenna configuration