Eurocontrol Software Tools for Frequency Planning and Management
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
Eurocontrol
Eurocontrol Software Tools for Frequency Planning and Management
• 1 - Background: Beginning of the ninety’s
• Find a technical solution against the European VHF congestio
=> Preference to 8.33 kHz;
Introduced in October 99 in 7 Initial States for FL>245
• Need for a robust and reliable
assignment database & frequency software
=> COM table database (Oracle database) &
ODET (Oracle Database Exchange Tool) for their maintenance
=> MANIF (day-to-day frequency tool) &
PLANIF (Block Planning frequency tool)
Eurocontrol
Eurocontrol Software Tools for Frequency Planning and Management
• 1 - Background: End of the ninety’s
• 8.33 kHz in the 7 Initial States For FL>245?
• Enough?
• Beneficial?
• Alternate solution?
=> SENSI (forecast & simulation tool)
• Requirements & strategy of the Navaids frequency band.
=> PLANAIDS (forecast & simulation tool)
Eurocontrol
Eurocontrol Software Tools for Frequency Planning and Management
• 2 - Databases:
• At present,
• COM2 Table
• COM3 Table
• COM4 Table
• COM2 Table
• COM3Table
• DEMETER
• In the future,
• SFMS
=> downloads for MANIF
=> downloads for PLANIF & SENSI
=> downloads for PLANAIDS
=> downloads for MANIF, PLANIF, SENSI & PLANAIDS
Eurocontrol
Eurocontrol Software Tools for Frequency Planning and Management
• 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
Eurocontrol
Eurocontrol Software Tools for Frequency Planning and Management
• 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.
Eurocontrol
Eurocontrol Software Tools for Frequency Planning and Management
• 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, MLSME,…
• 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.
Eurocontrol
Eurocontrol Software Tools for Frequency Planning and Management
• 4 - PLANIF for the supporting the bi-annual block planning
meetings for the VHF band Voice com services
The objectives of the planning process:
COM2 table
checked and
corrected
States’
Requirements
• Be efficient in spectrum allocation
=>use of an optimization strategy
PLANIF
RUN
• Minimize the shifts for
the whole block planning RESULTS
• Limit the maximum shifts
for each individual
requirement
ARB Assessment
&
Final list of
requirements
• Maximum solutions
but ! priority level
PLANIF Planning & Compatibility criteria in line with
the EUR Frequency Management Manual Eurocontrol
Eurocontrol Software Tools for Frequency Planning and Management
• 4 - PLANIF for the VHF block planning meetings
PLANIF’s Optimization Strategy:
1. A weight is given to each existing assignment
=> equal to the number of available frequencies
=> each existing assignment get an EASY or NONEASY status
2. Each Need is processed
=> Available frequencies
=> Weight
=> EASY or NONEASY status
3. Needs are processed from the most NONEASY to the EASIest
Eurocontrol
Eurocontrol Software Tools for Frequency Planning and Management
• 4 - PLANIF for the VHF block planning meetings
PLANIF’s Optimization Strategy:
4. The "best" solutions are those corresponding to frequencies :
=> already used by another need,
=> with a minimum number of remaining needs capable to use the
frequency,
=> 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 :
=> Unsatisfied shifts are considered as non shiftable and the planning
process restarts from step 2.
Eurocontrol
Eurocontrol Software Tools for Frequency Planning and Management
•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
Estimation of
the future demand
Apply RUN2
Apply
modification
Apply RUNX
Results
SENSI
Eurocontrol
Eurocontrol Software Tools for Frequency Planning and Management
• 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
Eurocontrol
Eurocontrol Software Tools for Frequency Planning and Management
• 5 - SENSI for VHF band forecast and simulation
• Example : extract from
VERTICAL EXPANSION STUDY – Group Outcome 26/3/2002
Vertical Expansion Scenarios - Global Curves 76 HEX
Satisfied Demand HEX
2500
Satisfied Demand VEX
to FL195 - 7 States
Satisfied Demand VEX
To FL195 - 29 States
Satisfied Demand VEX
- to FL195 & Busy TMAs
1500
Satisfied Demand
Massive VEX - N+K
1000
500
Block Planning (1=6/9 Months)
29
27
25
23
21
19
17
15
13
11
9
7
5
3
0
1
Frequency Demand
2000
Satisfied Demand
Academic All Airspace N+K+U
Sum of 50%-TOTALneed Academic All
Airspace - N+K+U
Sum of TOTAL-need
Academic All Airspace N+K+U
Sum of 50%-TOTALneed HEX
Sum of 50%-TOTALneed VEX to FL195 - 7
States
Sum of 50%-TOTALneed VEX To FL195 -
Eurocontrol
Eurocontrol Software Tools for Frequency Planning and Management
• 5 - SENSI for VHF band forecast and simulation
• Example : extract from
VERTICAL EXPANSION STUDY – Group Outcome 26/3/2002
VERTICAL EXPANSION STUDY – Group Outcome 26/3/2002
1.
1.1
Report High Level Frequency Simulation Trends and Conclusions
Considering the current situation and a HEX Implementation with 76 Conversions,
the preliminary trends and conclusions from the frequency simulations are:
(a) Congestion in the Core Area Upper airspace will occur by 2004, with congestion in
the whole Core airspace (Upper and Lower) by 2007.
(b) The 8.33 Programme Horizontal expansion provided an excellent solution to
congestion relief in the Upper airspace of the HEX States with the anticipated
congestion alleviated until 2013. However the lower airspace risks congestion by
2004. The combined HEX Upper and Lower airspace may until around 2009.
(c) OTHER ICAO EUR States will reach congestion after 2010 with saturation 4 years
later. An 8.33 implementation programme may postpone this congestion.
(d) Localised congestion already exists in some core States.
=> Propose strategies for the future
1.2
The preliminary trends and conclusions for the frequency simulations of the different
VEX Scenarios are:
(e) The Academic (Scenario 4) removes the congestion problem but is not a realistic
option.
(f) The “iNtended and Known” Massive Vertical (Scenario 3) provides the best long
term solution until 2015+.
(g) The alternative Scenarios 1 and 2 down to FL195 and adding the TMAs provide
solutions, but even accumulated, they do not solve the long term problems
through to 2015.
1.3
An improvement in the number of HEX Implementation conversions to 103, provides
benefits across all of the Vertical expansion Scenarios.
1.4
The earlier the conversions are undertaken, the more benefit can be reclaimed.
Eurocontrol
Eurocontrol Software Tools for Frequency Planning and Management
• 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
Estimation of
the future demand
Apply RUN2
Apply
modification
Apply RUNX
Results
PLANAIDS
Eurocontrol
Eurocontrol Software Tools for Frequency Planning and Management
• 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.
=> Propose strategies for the future
Eurocontrol