Feasibility Analysis of 5091-5150 MHz Band Sharing by ANLE and MSS Feeder Links
May 2006
Yan-Shek Hoh, The MITRE Corporation
Izabela L. Gheorghisor, The MITRE Corporation
Frank Box, The MITRE Corporation
ABSTRACT
The Federal Aviation Administration plans to use the 5091-5150 megahertz band for the
future Airport Network and Location Equipment (ANLE) system, which will provide an
enhanced surveillance capability for airport surface environments. The same band has also
been allocated on a co-primary basis to non-geostationary mobile-satellite-service (MSS)
feeder uplinks, which must be protected against potential interference from ANLE
transmissions. Our analysis demonstrates that if ANLE is based on the IEEE 802.11a or
802.16e standard, then compatibility with co-frequency MSS feeder links appears feasible by
controlling the output power of ANLE transmitters, limiting their duty cycles, and
distributing their frequency assignments among the three channels available in the band. Our
results are contingent on the accuracy of our assumptions (which still need to be validated
through field testing outside the scope of the present study) about the fading margins and
path-loss exponents that apply to airport surface environments in the frequency band of
interest.
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