1. Preparations for WRC-12 WRC -12 AGENDA ITEM 1.3 ON UAS
EUR RPS for
WRC-12 preparation
Preparations for WRC-12 WRC -12 AGENDA ITEM 1.3 ON UAS
Presented by
John Taylor
Paris
17-18 Mar 2011

2. UAS
Unmanned Aircraft Systems (UAS) consists of Unmanned Aircraft (UA) and associated Control Stations. Unmanned aircraft are powered, aerial vehicles that do not carry a human pilot, use aerodynamic forces to provide vehicle lift, and may fly autonomously or be piloted remotely
Paris
17-18 Mar 2011

3. UAS APPLICATIONS
Two groups of UAS applications, anticipated fields of operation examples for each mission type
Paris
17-18 Mar 2011

4. AIRSPACE ISSUES
UAS operations have been limited to segregated (restricted airspace)
Advancements in design and technology
Expanding deployment in a variety of roles
More favorable in repetitive, routine, long duration operations
Requirement for safe integration into non-segregated (non-restricted) airspace
Integration into the Air Traffic Control system
Paris
17-18 Mar 2011

5. Communication links
Integration into Air Traffic Control system and national airspace
Operation in civil airspace with other air traffic
Operation must be transparent to all other users as if UAS were a manned aircraft
Requirement for communication links with UAS
Three main types of communication links
Command and Control link
Relay of Air Traffic Control communications
Relay of Sense and Avoid communications
Paris
17-18 Mar 2011

6. Communication Links Seamless integration of UAS in civil airspace
Requirement for maintaining safety of flight
Requirement for short range line of sight communications
Requirement for beyond line of sight communications
The two types of communication requirements have a profound effect on the amount spectrum needed
Hence WRC-07 placed and agenda item on the next WRC-12 to identify spectrum for UAS
Paris
17-18 Mar 2011

7. WRC-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
Paris
17-18 Mar 2011

8. WRC-12 Agenda Item 1.3 Resolution 421 Invites ITU-R
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
that the studies referred to in invites ITU‑R 1 should include sharing and compatibility studies with services already having allocations in those bands
to produce a report or a recommendation, as appropriate, on how to accommodate the radiocommunication requirements for UAS payloads
Paris
17-18 Mar 2011

9. WRC-12 Agenda Item 1.3 Spectrum requirements and possible regulatory actions, including allocations, for safe operation of UAS
ISSUES
What are the technical characteristics
What are the protection requirements
How much spectrum will be required
Identification of current allocations that can accommodate UAS
Identification of additional frequency allocations if required
Ensuring compatibility with existing radiocommunication services
What possible regulatory actions will be required by the Conference
Paris
17-18 Mar 2011

10. Work being undertaken in WP 5B
WRC-12 Agenda Item 1.3 Spectrum requirements and possible regulatory actions, including allocations, for safe operation of UAS
Work being undertaken in WP 5B
Spectrum requirement identified
34 MHz terrestrial
56 MHz Satellite (including feeder links)
ITU-R M.2171 (Doc. 5B/296 Annex 16)
Framework towards DN Report ITU-R M.[UAS-BANDS] (Doc.5B/296 Annex 14)
Draft CPM text (Doc. 5B/296 Annex 19)
Work plan (Doc. 5B/296 Annex 18)
Paris
17-18 Mar 2011

11. WRC-12 Agenda Item 1.3 Spectrum requirements and possible regulatory actions, including allocations, for safe operation of UAS
Communications Scenario for line of sight
ATC UA
Control Station
Uplink : CS to UA
1. CS to UA
Downlink : UA to CS
2. UA to CS
Spectrum requirement
LOS = 1+2 = 34 MHz 1 2
Paris
17-18 Mar 2011

12. WRC-12 Agenda Item 1.3 Spectrum requirements and possible regulatory actions, including allocations, for safe operation of UAS
Communication Scenario for beyond line of sight
ATC
UAV CS 1 4 3 2
Satellite
Spectrum requirement
PILOT/SAT (UL+DL) = +
= 28 MHz
SAT/UA (UL+DL) =
TOTAL BLOS = 2 x 28Hz = 56MHz
Forward link :
1. Uplink : CS to satellite
2. Downlink : satellite to UA
Return link
3. Uplink : UA to satellite
4. Downlink : satellite to CS
Paris
17-18 Mar 2011

13. 1 545–1 555 (space-to-Earth) and 1646.5–1656.5 MHz (Earth-to-space)
WRC-12 Agenda Item 1.3 Spectrum requirements and possible regulatory actions, including allocations, for safe operation of UAS
Candidate frequency bands
960 –1 164 MHz
1 545–1 555 (space-to-Earth) and – MHz (Earth-to-space)
MHz (space-to-Earth and Earth-to-space)
5 000–5 150 MHz and GHz
Paris
17-18 Mar 2011

14. Co-site compatibility Inter-site compatibility
WRC-12 Agenda Item 1.3
Frequency Band Analysis
960 –1 164 MHz
In-band systems
Co-site compatibility
Inter-site compatibility
Existing adjacent band systems
Potential future in-band systems
Paris
17-18 Mar 2011

15. WRC-12 Agenda Item 1.3 Frequency Band Analysis
1 545-1 555 MHz (space-to-Earth), 1 610-1 626.5 MHz (space-to-Earth and Earth-to-space), and 1   656.5 MHz (Earth-to-space)
AMS(R)S allocation in portions of these bands
Could be used for UAS communications links
These bands also under study in WRC Agenda Item 1.7
UAS communications would need to be specified and standardized for use over satellite links
RAS must be protected
Paris
17-18 Mar 2011

16. WRC-12 Agenda Item 1.3 Frequency Band Analysis
5 000-5 150 MHz
Suitable for UAS links
AMS(R)S and AMRS allocations
Need to protect MLS and RNSS
Potential sub-band usage
Paris
17-18 Mar 2011

17. WRC-12 Agenda Item 1.3 CURRENT STATUS OF WORK ITU-R
ITU-R M.2171, M.2204, M.2205
Draft new Reports ITU-R M.[UAS-Bands New Alloc] and ITU-R M.[UAS PERF and REQ]
CPM-11 text has been published
Paris
17-18 Mar 2011

18. WRC-12 Agenda Item 1.3 ICAO POSITION ON 1.3
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.
Paris
17-18 Mar 2011 18

19. WRC-12 Agenda Item 1.3 UAS END
Paris
17-18 Mar 2011 19