wrc-12 a.i. 1.3

Direction générale de l’Aviation civileMinistère de l'Écologie, du Développement durable, des Transports et du Logement

Direction des Services de la Navigation Aérienne

WRC-12A.I. 1.3

Eric ALLAIXDGAC-DSNA

26-7th October 2011 2Direction généralede l’Aviation civile


Summary WRC Agenda Item 1.3 Resolution 421 What is UAS? What are we talking about? Invites 1 and 2 of Resolution 421 UAS applications LOS spectrum requirements BLOS spectrum requirements Candidate frequency bands Current status of work in ITU-R Possible regulatory actions “Protected spectrum” Why? Examples of risks using “non-safety” frequency allocations for satellite

communications with UAS ICAO position on AI 1.3



WRC-12 Agenda Item 1.3

=> to consider spectrum requirements and possible regulatory actions, including allocations, in order to support the safe operation of unmanned aircraft systems (UAS), based on the results of ITU‑R studies, in accordance with Resolution 421 (WRC‑07)



Resolution 421 - Invites ITU-R

1.to conduct in time for WRC‑12 the necessary studies leading to technical, regulatory and operational recommendations to the Conference, enabling that Conference to decide on appropriate allocations for the operation of UAS

2.that the studies referred to in invites ITU‑R 1 should include sharing and compatibility studies with services already having allocations in those bands

3.to produce a report or a recommendation, as appropriate, on how to accommodate the radiocommunication requirements for UAS payloads



What is UAS?

UAS: Unmanned Aircraft System

An aircraft and its associated elements which is operated with

no pilot on-board.



What are we talking about?

Sense and

Avoid

ATC

ATC

ATC (satellite)

Sense and Avoid

ATC relay

Command and control

Sense and Avoid relay (satellite)

ATC relay (satellite)

Command and control (satellite)

Pilot

Remote pilot



Invites 1 and 2 of Resolution 421

Spectrum requirements and possible regulatory actions, including allocations, for safe operation of UAS Sharing and compatibility studies have to be completed with services already having allocations in the bands identified

Identification of the UAS applicationsHow much spectrum will be required in particular by taking into

account the technical characteristics and the protection requirements?

Identification of current allocations that can accommodate UASIdentification of additional frequency allocations if requiredEnsuring compatibility with existing radiocommunication servicesWhat possible regulatory actions will be required by the

Conference?



UAS applications



LOS spectrum requirements

ATC Control Station

1. Remote Pilot to UA 2. UA to Remote Pilot

12

34 MHz for links 1 and 2 below



BLOS spectrum requirements

56 MHz for links 1, 2, 3 and 4 below

ATC

UA

Control Station (mobile or fixed) or Gateway station (to which remote pilots are connected)

1

4

32

SatelliteForward link: 1: Remote Pilot to satellite2: Satellite to UAReturn link: 3: UA to satellite4: Satellite to Remote Control Station



960 –1 164 MHz−Report ITU-R M. 2205 concludes that portion(s) of the existing

AM(R)S allocation in the band 960-1 164 MHz can be used in some countries to support some UAS terrestrial spectrum requirements but cannot be used to meet the entire 34 MHz terrestrial spectrum requirement for UAS operations.

5 000–5 150 MHz and 15.4-15.5 GHz−Studies are ongoing in WP 5B in these bands.

For LOS requirements :

Candidate frequency bands (1/2)



5030-5091 MHz−Report ITU-R M. 2205 concludes that this band can be used to support

the entire UAS satellite spectrum requirements ensuring the protection criteria for MLS.

12/14 and 20/30 GHz−A Preliminary draft new report ITU-R M.[UAS-CNPC-CHAR] is under

study in WP 5B. The purpose of this Report is to give examples of technical characteristics for the UAS CNPC links in certain frequency bands. But no technical studies have been done in these frequency bands

For BLOS requirements :

Candidate frequency bands (2/2)



CURRENT STATUS OF WORK IN ITU-R (1/4)

ITU-R M.2171: −Characteristics of unmanned aircraft systems and spectrum

requirements to support their safe operation in non‑segregated airspace

ITU-R M.2204:−Characteristics and spectrum considerations for sense and avoid

systems use on unmanned aircraft systems

ITU-R M.2205:−Results of studies of the AM(R)S allocation in the band 960-1 164 MHz

and of the AMS(R)S allocation in the band 5 030‑5 091 MHz to support control and non-payload communications links for unmanned aircraft systems




Draft new Report ITU-R M.[UAS-BANDS-NEW-ALLOC-5 030-5 091 MHz] :

− Frequency band study to support the line of sight Control and Non-Payload Communications (CNPC) link(s) for Unmanned Aircraft Systems (UAS) within new allocations in the band 5 030-5 091 MHz

Preliminary draft new Report ITU-R M.[UAS-BANDS-NEW-ALLOC-5 000-5 010 AND 5 010-5 030 MHz] :

− Frequency band study to support the line of sight control and non-payload communications (CNPC) links for unmanned aircraft systems (UAS) within new allocations in the bands 5 000-5 010 and 5 010-5 030 MHz




Preliminary draft new Report ITU-R M.[UAS-BANDS-NEW-ALLOC-5 091-5 150 MHz] :

−Frequency band study to support line of sight control and non-payload communications (CNPC) links for unmanned aircraft systems (UAS) within new allocations in the band 5 091-5 150 MHz

Preliminary draft new Report ITU-R M.[UAS-BANDS-NEW-ALLOC-15.4-15.5 GHz] :

−Frequency band study to support line of sight control and non-payload communications (CNPC) links for unmanned aircraft systems (UAS) within new allocations in the band 15.4-15.5 GHz




Preliminary draft new Report ITU-R M.[UAS-CNPC-CHAR] :−Examples of technical characteristics for unmanned aircraft control and non-

payload communications (CNPC) links Bands for LOS

960-1 164 MHz 5 000-5 150 MHz

Bands for BLOS: 1 545-1 555 MHz (space-to-Earth), 1 610-1 626.5 MHz (space-to-Earth and

Earth‑to-space) and 1 646.5-1 656.5 MHz (Earth-to-space) 5 030-5 091 MHz 12/14 GHz 20/30 GHz



CPM-11 report has been published7 methods are proposed to satisfy this agenda item:

−5 methods for the satellite component

−1 method for the terrestrial component

−1 method, covering both terrestrial and satellite components

All the allocations have to be used in such a way that the systems envisaged for UAS control and non-payload radiocommunications comply with ICAO SARPs

Any method or a combination of these methods described in the CPM-11 report may be used.

Possible regulatory actions (1/3)



Method B proposes new AM(R)S allocations for the terrestrial component.

Method C proposes no change to the Table of Frequency Allocations (RR Article 5) for frequency bands for which the studies have not been completed (for both terrestrial and satellite components, ).




Five methods for the satellite component:−Method A1 proposes the use of the current AMS(R)S allocations for both

links (unmanned aircraft to satellite and unmanned aircraft control station (mobile and fixed) to satellite);

−Method A2 proposes the use of the current MSS, AMSS and AMS(R)S allocations for both links (unmanned aircraft to satellite and unmanned aircraft control station (mobile and fixed) to satellite) and FSS allocations (only for the fixed unmanned aircraft control station to satellite link) in accordance with the Radio Regulations;

−Method A3 proposes the use of the current FSS allocations by adding a new footnote pointing toward a WRC Resolution/Recommendation (except frequency bands covered by Appendices 30, 30A and 30B to the Radio Regulations);

−Method A4 proposes to restrict the communication link between unmanned aircraft and satellite to AMS(R)S allocations, to confirm the use of AMS(R)S allocations for the radiocommunication link between unmanned aircraft control station and the satellite and to allow the use of the FSS allocations for this link (except frequency bands covered by Appendices 30, 30A and 30B to the Radio Regulations);

−Method A5 proposes new AMS(R)S allocations.




• Introduction of UAS into non-segregated airspace must not reduce the current level of safety

• ITU regulations provide special measures for the protection of safety communications

• Those special measures are applicable to the AM(R)S, AMS(R)S and ARNS allocations used by all ICAO standardized C/N/S systems

• Such measures are not applicable to other non-safety allocations, in particular to FSS, and consequently such allocations cannot be used for UAS without affecting the level of safety

“Protected Spectrum”, why?



• Uncertain jurisdiction and responsibility for interference mitigation

• Special measures in ITU Radio Regulations cannot be used for protection and interference mitigation

• In a shared frequency allocation scenario, uncertain priority of access to UAS control

• Majority of FSS allocations are not fully co-ordinated. In case incompatible assignments are made in two separate States, then UAS control is not afforded any protection against interference

• In case of interference resolution, the UAS control service may be treated equally or lower than a television broadcast service

PotentialInterference

UAS control

Service regulated byState A Service regulated by

State C

Unmanned Aircraft flying over territoryof State B

Examples of risks using “non-safety” frequency allocations for satellite communications with UAS



ICAO position

To support, based on the results of studies identified in Resolution 421, any modification to existing allocations, or new allocations required to accommodate UAS operations in non-segregated airspace while maintaining the safety and regularity of flight of all types of aircraft.

Accordingly, to ensure that allocations used, in particular, for UAS command and control, ATC relay and sense and avoid in non-segregated airspace are in the AM(R)S, AMS(R)S and/or ARNS and do not adversely affect existing aeronautical systems

To oppose the use of this agenda item to seek new spectrum allocations to meet payload requirements.



THANK YOU FOR YOUR ATTENTION

wrc-12 a.i. 1.3

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