Eurocontrol Software Tools for Frequency Planning and Management

1
Eurocontrol Software Tools for Frequency
Management

• 1- Background

• 2- Databases

• 3- MANIF for day-to-day

• 4- PLANIF for Block Planning

• 5- SENSI for VHF voice forecast simulation

• 6- PLANAIDS for Navaids forecast simulation

2

• 1 - Background Beginning of the ninetys

• Find a technical solution against the European
  VHF congestion
• gt Preference to 8.33 kHz
• Introduced in October 99 in 7 Initial
  States for FLgt245

• Need for a robust and reliable
• assignment database frequency
  software
• gt COM table database (Oracle database)
• ODET (Oracle Database Exchange Tool) for
  their maintenance
• gt MANIF (day-to-day frequency tool)
• PLANIF (Block Planning frequency tool)

3

• 1 - Background End of the ninetys

• 8.33 kHz in the 7 Initial States For FLgt245?
• Enough?
• Beneficial?
• Alternate solution?
• gt SENSI (forecast simulation tool)

• Requirements strategy of the Navaids frequency
  band.
• gt PLANAIDS (forecast simulation tool)

4

• 2 - Databases

• At present,
• COM2 Table
• COM3 Table gt downloads for MANIF
• COM4 Table

• COM2 Table gt downloads for PLANIF
  SENSI

• COM3Table
• DEMETER

gt downloads for PLANAIDS

• In the future,
• SFMS gt downloads for MANIF, PLANIF, SENSI
  PLANAIDS

5

• 3 - MANIF for States day-to-day frequency
  management of

• COM2 table i.e. Voice communication
  (117.975 - 137.000 MHz)
• COM3 table i.e. ILS Localiser, VOR GBAS
  (108.000 - 117.975 MHz)
• ILS Glide path
  (328.6 - 335.4 MHz)
• DME
  (960 - 1215
  MHz)
• MLS
  (5000 - 5250
  MHz)
• COM4 table i.e. NDB and Locator
  (130 5235 kHz)
• COM5 table i.e. List of COM3 and COM4 Ident.
  code

6

• 3 - MANIF Functions

• ICAO COM tables import functions,
• Assignment database management,
• Polygon database management,
• Frequency compatibility check,
• Frequency search,
• Including Shifting existing frequencies
• Graphic display of coverage and protection
  areas.

7

• 3 - MANIF Planning Compatibility criteria

MANIF Planning Compatibility criteria in line
with the EUR Frequency Management Manual that
takes into account of

• Coverage (including max FL) of the services
  (circ/sectors), i.e. DOC
• Power of desired and undesired transmitters,
• Frequency gap between desired and undesired
  services,
• Pairing (double/triple pairing VOR-DME,
  ILS-DME, MLS-ME,
• Harmonic level (used for VOR/VOR adjacent
  channel separation),
• Problems due to existence of unpaired DME or
  TACAN
• in the line of sight of an unpaired VOR.

8

• 4 - PLANIF for the supporting the bi-annual
  block planning meetings for the VHF band Voice
  com services

The objectives of the planning process
States Requirements

• Be efficient in spectrum allocation
• gtuse of an optimization strategy

COM2 table checked and corrected
ARB Assessment Final list of requirements
PLANIF RUN

• Minimize the shifts for
• the whole block planning
• Limit the maximum shifts
• for each individual requirement

• Maximum solutions
• but ! priority level

RESULTS
PLANIF Planning Compatibility criteria in line
with the EUR Frequency Management Manual
9

• 4 - PLANIF for the VHF block planning meetings

PLANIFs Optimization Strategy 1. A weight is
given to each existing assignment gt equal to
the number of available frequencies gt each
existing assignment get an EASY or NONEASY
status 2. Each Need is processed gt
Available frequencies gt Weight gt EASY or
NONEASY status 3. Needs are processed from the
most NONEASY to the EASIest
10

• 4 - PLANIF for the VHF block planning meetings

PLANIFs Optimization Strategy 4. The "best"
solutions are those corresponding to frequencies
gt already used by another need, gt with a
minimum number of remaining needs capable to use
the frequency, gt implying a minimum of
shifts. 5. New frequencies are searched for
requested shifts (No shift for them). 6. If all
requested shifts can not be satisfied, a
"Feed-back" is done gt Unsatisfied shifts are
considered as non shiftable and the planning
process restarts from step 2.
11

• 5- SENSI for the analysis of the VHF spectrum
  capacity from the medium to the long term

• Estimation of the future demand (from the last
  BPs)

• SENSI for forecast execute a loop of BPs

• SENSI for simulation execute modification
• - in
  database needs
• - in
  Planning criteria compatibility

COM2 table
Apply RUN1
Apply RUN2
Apply RUNX
Apply modification
Results
Estimation of the future demand
SENSI
12

• 5 - SENSI for VHF band forecast and simulation

• Different scenario have been made to assess the
  impact
• On the VHF Spectrum 118-137 MhZ when
• 8.33 introduction, horizontal and vertical
  extension,
• modification of separation criteria,
• limitation of DOC,
• withdrawal of services,
• reduction/increase of available bands

13

• 5 - SENSI for VHF band forecast and simulation

• Example extract from
• VERTICAL EXPANSION STUDY Group Outcome
  26/3/2002

14

• 5 - SENSI for VHF band forecast and simulation

• Example extract from
• VERTICAL EXPANSION STUDY Group Outcome
  26/3/2002

gt Propose strategies for the future
15

• 6 - PLANAIDS for the analysis of the NAVAIDS
  spectrum capacity from the medium to the long term

• Estimation of the future demand

• PLANAIDS for forecast execute a loop of BPs

• PLANAIDS for simulation execute modification
• 
  - in database needs
• 
  - in Planning criteria compatibility

COM3 table
Apply RUN1
Apply RUN2
Apply RUNX
Apply modification
Results
Estimation of the future demand
PLANAIDS
16

• 6 PLANAIDS simulations

• Different scenario have been made to assess the
  impact on Navaids spectrum when
• modification of separation criteria,
• withdrawal/addition of services,
• introduction of new services such as GBAS,
• reduction of available band
• (e.g. DME band in the perspective of GNSS)
• impact of the DME pairing constraints.

gt Propose strategies for the future