Transcript 3rd SADC WRC-07 MEETING 04 – 06 JUNE 2007 INDABA …

Agenda Item:1.10
Consider spectrum requirements and possible MSS
allocations in the Earth-to-space and space-to-Earth
directions, including the satellite component for
broadband applications and IMT in the range 22-26GHz
in accordance with Resolution 234 (WRC-12)
Relevant
Resolution/s
Resolution 234 (WRC-12) Additional
primary allocations to the mobilesatellite service within the bands from
22 GHz to 26 GHz
Issues
To complete, for WRC 15, sharing and
compatibility studies towards additional
allocations to the mobile-satellite service
in the Earth-to-space and space-to-Earth
directions, within portions of the bands
between 22 GHz and 26 GHz, while
ensuring protection of existing services
within these bands as well as taking into
account No. 5.340 and No. 5.149
Frequency Bands
under consideration
Regarding the allocations to radio services on a primary basis the following services
can be found in the Table of Allocations of Article 5 of the Radio Regulations as
amended at WRC-12 and NRFP2013 (see Table 1):
Table 1
Frequency Band
24-24.05 GHz
24-24.05 GHz
22.21-22.5 GHz (passive), 23.6-24 GHz (passive), 25.527 GHz (s-E)
22-23.6 GHz, 24.25-25.25 GHz (Regions 1 and 3), 25.25-27
GHz
24.65-24.75 GHz (E-s) (Regions 1 and 3); 24.75-25.25 GHz
(E-s)
22.55-23.55 GHz, 24.45-24.75 GHz, 25.5-27 GHz
22-23.6 GHz; 24.25-25.25 GHz (Region 3), 25.25-27 GHz
22.21-22.5 GHz, 23.6-24 GHz
24.05 24.25 GHz
24.25-24.65 GHz (Regions 2 and 3)
24.65-24.75 (E-s) (Region 2)
22.21-22.5 GHz (passive), 22.55-23.15 GHz (E-s), 23.6-24
GHz (passive), 25.5 -27 GHz (s-E)
Radio Service
ITU Allocation
SA allocation
AMATEUR
AMATEUR
AMATEUR-SATELLITE
AMATEUR-SATELLITE
EARTH EXPLORATIONEARTH EXPLORATIONSATELLITE
SATELLITE
FIXED
FIXED
FIXED SATELLITE (Earth-tospace)
INTERSATELLITE
MOBILE
RADIO ASTRONOMY
RADIOLOCATION
RADIONAVIGATION
RADIOLOCATIONSATELLITE
SPACE RESEARCH
FIXED SATELLITE (Earthto-space)
MOBILE only in 22.522.55GHz
RADIO ASTRONOMY
RADIOLOCATION
SPACE RESEARCH
Frequency Bands
under consideration
(continued)
For radio services on a secondary basis the Table of Allocations in in the Article 5 provides
the following entries (see Table 2):
Table 2
Frequency Band
24.05 -24.25 GHz
24.05-24.25 GHz (active)
25.25-27 GHz (E-s)
Radio Service
Region 1 Allocation
SA allocation
Amateur
Amateur
Earth exploration-satellite
Earth exploration-satellite
Standard Frequency and
Time Signal-Satellite
Summary of Relevant
ITU SG/WP Progress
 Progress from 12th Meeting of WP4C, 25 September to
1October 2013 ( document 4C/239-E):
Regarding the MSS spectrum requirements under this agenda item,
there were no new contributions to this meeting. Concerning
sharing studies, new contributions were received regarding sharing
with the fixed, mobile and inter-satellite services. Updated parameters
were also received for the MSS; however, for a significant number
of parameters, the values have yet to be identified. The absence
of these values makes the performance of sharing studies difficult.
Finally, the draft CPM Report was updated to include the results
of the studies presented at this meeting.
 Work Plan, Annex 12 to document 4C/289-E, 3 March
2014
Shows that some of the Work Plan milestones only conclude in July 2014 and will be
available for draft CPM report to WRC-15
Method(s) to satisfy
the agenda Item
No clear method is as yet identified
Preliminary SA
Position
The S.A. position considers that:
 That due to the lack of clarity of identified frequency requirements for 2226GHz bands for potential MSS allocation and,
 Also that the requirements and additional allocations should be based on
the compatibility studies in order to adequately protect the existing services
and their future developments (especially FS links in 23GHz and 26GHz
bands for S.A.)
Insufficient information is available to support the
additional MSS allocation and that the impact of an
additional MSS allocation could impact all existing
S.A. allocations for AS,ASS,EESS,FS,FSS,RA,RLS,SRS
Conclusion
Considering that:
The frequency bands 21.2-23.6 GHz (23 GHz band) and 24.5-26.5GHz (26 GHz
band), are allocated to the fixed service on a primary basis in Region 1
(including S.A.)
 In South Africa, Africa and also elsewhere, the frequency bands are
extensively used by fixed links to provide the infrastructure requirements for
existing 2G and 3G mobile networks for fixed links wireless transport
networks. Many thousands of these links are deployed in S.A. These FS links
could impede operation of MSS earth stations across these bands.
 that when determining additional spectrum requirements for the MSS, it is
necessary to take into account already existing allocations to the MSS in the
Ka-band to adequate protection of these services
 That the requirements and additional allocations should be based on the
compatibility studies in order to adequately protect the existing services and
their future developments
It would thus be recommended :
 Since these studies are not yet completed as per Work Plan Annex 12 to
document 4C/289-E, which therefore do not yet indicate a clear
protection of FS in 22-26GHz, S.A. not support this AI until the
outcomes of current studies are available