Goto Section: 25.260 | 25.262 | Table of Contents
FCC 25.261
Revised as of October 2, 2015
Goto Year:2014 |
2016
§ 25.261 Procedures for avoidance of in-line interference events for Non
Geostationary Satellite Orbit (NGSO) Satellite Network Operations in the
Fixed-Satellite Service (FSS) Bands.
(a) Applicable NGSO FSS Bands. The coordination procedures in this section
apply to non-Federal-Government NGSO FSS satellite networks operating in the
following assigned frequency bands: The 28.6-29.1 GHz or 18.8-19.3 GHz
frequency bands.
(b) Definition of “In-line interference events.” For purposes of this
section, an “in-line interference event” is defined as the interference
associated with an occurrence of any physical alignment of space stations of
two or more satellite networks with an operating Earth station of one of
these networks in such a way that the angular separation between operational
links of the two networks is less than 10° as measured at the Earth station.
(c) Default procedure. If no agreed coordination exists between two or more
satellite networks, then the bands will be divided among the affected
satellite networks involved in an in-line interference event in accordance
with the following procedure:
(1) Each of n (number of) satellite networks involved in a particular
in-line interference event shall select 1/n of the assigned spectrum
available in each frequency band for its home base spectrum. The selection
order for each satellite network shall be determined by and be in accordance
with the date that the first space station in each satellite network is
launched and operating;
(2) The affected space station(s) of the respective satellite networks shall
only operate in the selected (1/n) spectrum associated with its satellite
network, its home base spectrum, for the duration of the in-line
interference event;
(3) All affected space station(s) may resume operations throughout the
assigned frequency bands once the angular separation between the affected
space stations in the in-line interference event is again greater than 10°.
(d) Coordination procedure. Any coordination procedure agreed among the
affected operating satellite networks, which allows operations of the
satellite networks when each network's respective space stations are within
the 10 degree avoidance angle associated with an in-line interference event,
shall supersede the default procedure of paragraph (c) of this section.
Coordination may be effected using information relating to the space
stations and the parameters of one or more typical earth stations. All
parties are required to coordinate in good faith.
[ 68 FR 59129 , Oct. 14, 2003, as amended at 78 FR 8430 , Feb. 6, 2013]
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Goto Section: 25.260 | 25.262
Goto Year: 2014 |
2016
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