Eurocontrol Software Tools for Frequency Planning and Management

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 k. Hz; 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 k. Hz 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, • COM 2 Table • COM 3 Table • COM 4 Table • COM 2 Table • COM 3 Table • 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: • COM 2 table i. e. Voice communication (117. 975 - 137. 000 MHz) • COM 3 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) • COM 4 table i. e. NDB and Locator (130 – 5235 k. Hz) • COM 5 table i. e. List of COM 3 and COM 4 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: COM 2 table checked and corrected • 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 States’ Requirements 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 forecast = execute a loop of BPs • SENSI for simulation = execute modification - in database & needs - in Planning criteria & compatibility COM 2 table Estimation of the future demand Apply RUN 1 Apply RUN 2 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 Mh. Z 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 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 => Propose strategies for the future 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 forecast = execute a loop of BPs • PLANAIDS for simulation = execute modification - in database & needs - in Planning criteria & compatibility COM 3 table Estimation of the future demand Apply RUN 1 Apply RUN 2 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