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					Ministry of Land Infrastructure and Transport
CIVIL AVATION BUREAU OF JAPAN



                                     Agenda Item 1.7
                                        WRC-12
                                 First Regional Preparatory Group Meeting
                                             for ITU-R WRC-12




                                           Yoshiyuki Mikuni
                                           Office of Aeronautical Satellite Systems
                                           Civil Aviation Bureau, JAPAN
                                 Civil Aviation Bureau Japan




Contents

1. Overview
2. Historical Background
3. Frequency Coordination on 1.6/1.5 GHz
4. Considerations
5. Activities
   a. WP4C Activities
   b. National Activities
   c. Regional Activities
   d. ICAO Activities
6. Preparatory works for the Conference



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                                            Civil Aviation Bureau Japan




Overview (1)
Regulation, Resolution and Agenda Item

                        •Compensation for Generic Allocation
    Radio Regulations
                        •Give priority to AMS(R)S
     Footnote 5.357A
                        •Adopted at WRC-97


                        •Strengthen 5.357A
                        •Invite ITU-R to study the accommodation of
     Resolution 222     AMS(R)S spectrum requirements
                        •Adopted at WRC-2000
                        •Modified at WRC-07

                        •Consider the study results of Res. 222 at WRC-
                        12
    Agenda Item 1.7     •Take appropriate action
                        •Adopted at WRC-07


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Overview (2)
Footnote 5.357A of R.R. Key Points
•At the frequency coordination, priority shall be given to accommodating
the spectrum requirements of AMS(R)S
•AMS(R)S shall have priority access and immediate availability, by pre-
emption if necessary, over all other MSS
•In the bands 1 545-1 555 MHz and 1 646.5-1 656.5 MHz


                             5.357A In applying the procedures of Section II of Article 9 to the mobile-satellite
                             service in the bands 1 545-1 555 MHz and 1 646.5-1 656.5 MHz, priority shall be given
                             to accommodating the spectrum requirements of the aeronautical mobile-satellite (R)
                             service providing transmission of messages with priority 1 to 6 in Article 44.
                             Aeronautical mobile-satellite (R) service communications with priority 1 to 6 in Article 44
                             shall have priority access and immediate availability, by pre-emption if necessary, over
                             all other mobile-satellite communications operating within a network. Mobile-satellite
                             systems shall not cause unacceptable interference to, or claim protection from,
                             aeronautical mobile-satellite (R) service communications with priority 1 to 6 in Article 44.
                             Account shall be taken of the priority of safety-related communications in the other
                             mobile-satellite services. (The provisions of Resolution 222 (WRC-2000)* shall apply.)
                             (WRC-2000)




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                                                   Civil Aviation Bureau Japan



Overview (3)
Resolution 222 (Rev. WRC-07) Key Points
Resolves that administrations shall endure;
1 that spectrum needed for AMS(R)S is accommodated in frequency
coordination in the bands where 5.357A applies
2 the use of latest technical advances
3 that MSS yield capacity to accommodate spectrum requirements for
AMS(R)S

Invites ITU-R
i) to study the existing and future spectrum requirements of the AMS(R)S
ii) to assess whether the long-term requirements of the AMS(R)S can be
met within the bands 1,545-1555 MHz and 1646.5-1656.5 MHz
iii) to complete studies to determine the feasibility and practicality of
technical or regulatory means in order to ensure adequate access to
spectrum to accommodate the AMS(R)S requirements
iv) if the assessment indicates that these requirements cannot be met, to
study existing MSS allocations or possible new allocations

Invites ICAO and IATA to participate studies identified above
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                                                     Civil Aviation Bureau Japan




Overview (4)
Agenda Item 1.7
to consider the results of ITU-R studies in accordance with Resolution
222 (Rev.WRC-07) in order to ensure long-term spectrum availability and
access to spectrum necessary to meet requirements for the aeronautical
mobile-satellite (R) service, and to take appropriate action on this subject,
while retaining unchanged the generic allocation to the mobile-satellite
service in the bands 1 525-1 559 MHz and 1 626.5-1 660.5 MHz

Key Points
•Consider the results of the studies of Res.222 at WRC-12
•Take appropriate action on this subject
•Retain unchanged the generic allocation to MSS
•In the bands 1,525-1559 MHz and 1626.5-1660.5 MHz




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                                               Civil Aviation Bureau Japan




Historical Background (1)
Prehistoric times
•Until WARC-87(MOB), 1,545-1559 MHz and 1646.5-1660.5 MHz (14
MHz sub-bands in 34 MHz bands) were exclusively allocated to AMS(R)S

1525                           1559   1626.5                        1660.5
                   Exclusive                            Exclusive
            1545               1559            1646.5              1660.5

•At WARC-87, AMS(R)S lost 4 MHz of exclusive allocation. To AMS(R)S
in the bands 1,545-1555 MHz and 1646.5-1656.5 MHz (10 MHz sub-
bands in 34 MHz bands)
• AMS(R)S SARPs in 1995
1525                           1559   1626.5                        1660.5
                   Exclusive                          Exclusive
            1545           1555                1646.5          1656.5
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                                                 Civil Aviation Bureau Japan




Historical Background (2)
Generic allocation and footnote 5.357A of R.R.
•At WRC-97 ,AMS(R)S lost exclusive allocation (Generic allocation to
MSS )
•Footnote 5.357A to compensate the effect of generic allocation

1525                           1559   1626.5                         1660.5
                    5.357A                              5.357A
             1545            1555                 1646.5         1656.5

Resolution 222
•WRC-2000 adopted Res. 222 to strengthen 5.357A resolving that;
   • administrations shall ensure that
       • the spectrum needed for AMS(R)S
       • the MSS to yield capacity to accommodate AMS(R)S spectrum
         requirement
       • study for technical solution

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                                                      Civil Aviation Bureau Japan




Historical Background (3)
Study for technical solution
•Report ITU-R M.2073 in 2006 under resolves of Res. 222 concluded
that;
      •prioritization and inter system real-time pre-emption is not practical
       nor effective (There is no technical solution at that time)

Adoption of Agenda Item 1.7
•WRC-07 adopted Agenda Item 1.7 for WRC-12




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Frequency Coordination on 1.6/1.5 GHz
Regions 1 & 3 multilateral frequency coordination
•Given the fact that 1.6/1.5 GHz bands are so congested that it is difficult
to coordinate bi-laterally, multilateral coordination forum has been
established in Regions 1 & 3
•The Operator’s Review Meeting (the ORM) is held annually by the
operators in Region 1 (Europe) and Region 3 (Asia/Pacific)
•Participants on the ORM are Inmarsat(GB), Thuraya(UAE), ESA(France),
VOLNA(Russia), ACeS(Indonesia), Optus(Australia), NAVISAT(Egypt),
and MTSAT(Japan)
•AMS(R)S operators in operation are Inmarsat and MTSAT. ESA and
NAVISAT will be AMS(R)S operators in near future
•Region 2 (Americas) also has similar forum




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                                                       Civil Aviation Bureau Japan



Considerations
Controversial point on footnote 5.357A
•5.357A clearly states that the priority shall be given to AMS(R)S at
frequency coordination, but there is no practical measure to prioritize the
AMS(R)S

Argument between AMS(R)S and MSS
•AMS(R)S states that no consideration has been made for the application
of 5.357A at the frequency coordination on 1.6/1.5 GHz, thus spectrum
requirements of one of the AMS(R)S operator has never been satisfied
•MSS states that there is no issue on 5.357A because there has been no
issue for one of the AMS(R)S operator at frequency coordination on
1.6/1.5 GHz.
•MSS asserts that 5.357A works well and no modification is needed

Possible solution (for AMS(R)S)
•Discrepancy in opinion between AMS(R)S and MSS is irresolvable.
Compilation of different opinions into CPM report is inevitable, so we
have to make wording of CPM report favorable to AMS(R)S as far as
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                                        Civil Aviation Bureau Japan




Activities            WRC-12


  ITU-R

      CPM     BR


                                APT
      SG1    ICAO               ATU
      SG2     IATA             CEPT
                                                 Administrations
      SG3     IMO              CITEL
      SG4      etc.             LAS
                               RCC
                           Regional Groups
                           APT: Asia & Pacific
                           ATU: Africa
      WP4C   WG-F          CEPT: Europe
                           CITEL: Americas
                           LAS: Arab
                           RCC: Commonwealth

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                                                   Civil Aviation Bureau Japan




WP4C activities (1)
Discussions on Agenda Item 1.7 in WP4C
•At first, discussions on Agenda Item 1.7 were held in the order of
invites of Res. 222
     i) Establish the method to calculate existing and long-term spectrum
     requirements of AMS(R)S as ITU-R recommendation
     ii) To assess if the spectrum requirements are within 10 MHz
     iii) To complete studies of technical and regulatory measures
     iv) If requirements are over 10 MHz, study other bands

•As the deadline of CPM text in June 2010 nears, 4th WP4C decided
to postpone the development of recommendation on estimation
method and concentrate on CPM text
    •Assume the AMS(R)S spectrum requirements is within 10 MHz
    based on the estimation using the draft method
    •Complete studies of technical and regulatory measures
    •Finalize the recommendation on estimation method after the
    submission of CPM text
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                                               Civil Aviation Bureau Japan




WP4C activities (2)
AMS(R)S Position in WP4C
•Practical measure to give priority to AMS(R)S is needed

•Preliminary estimation shows that the long-term global spectrum
requirement for AMS(R)S is less than 10 MHz
    •You do not need to consider the new allocation for AMS(R)S

•The spectrum for AMS(R)S should be assigned based on a long-
term requirements (AMS(R)S operators should not be in the position
that worries about next year’s assignment)
     Now: The frequency coordination of the1.6/1.5 GHz bands is
     conducted in yearly- and equally-basis (not stable for AMS(R)S)

•The spectrum for AMS(R)S should be assigned on a global basis
    Now: The frequency coordination of the1.6/1.5 GHz bands is
    conducted on a regional basis
    Now: There are discrepancies in results among regions
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                                                                  Civil Aviation Bureau Japan



WP4C activities (3)
Draft CPM text favorable to AMS(R)S in WP4C
(excerpt from Annex 14 of 4C/338: Chairman’s Report of 4th WP4C)

•Method B – New ITU-R Resolution, or a modified ITU-R Resolution
222 which implements additional procedures for the provision of RR
No. 5.357A
Advantages
–[this method is an efficient use of the bands 1 525-1 559 MHz and 1 626.5-1 660.5 MHz by
AMS(R)S;] [Editor’s note: more explanation regarding this advantage is necessary as its intent
is not clear.]
–priority access to AMS(R)S communications is ensured, and generic MSS networks are able
to share with AMS(R)S networks.
–[this method would not result in placing undue constraints to the existing systems.] [Editor’s
note: to be assessed to the next meeting]
–[this method would result in efficient use of spectrum] [Editor’s note: to be assessed to the
next meeting]
Disadvantages
–[additional worldwide administrative meetings need to be held.]
–[implementation of priority access for AMS(R)S in the 1.5/1.6 GHz band would result in
placing undue constraints to the existing systems.] [Editor’s note: to be assessed to the next
meeting]
–[this method would result in inefficient use of spectrum] [Editor’s note: to be assessed to the
next meeting]                                                                   st
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                                               Civil Aviation Bureau Japan




WP4C activities (4)
MSS Position in WP4C
•There is no issue on the spectrum allocation for AMS(R)S because
there has been no issue for one of the AMS(R)S operator at
frequency coordination on 1.6/1.5 GHz

•AMS(R)S should go out of the bands 1.6/1.5 GHz regardless of
whether the spectrum requirement is less than 10 MHz or not
   •The existence of AMS(R)S is undue constraints to MSS in the
   bands 1.6/1.5 GHz




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                                                                            Civil Aviation Bureau Japan



WP4C activities (5)
Draft CPM text favorable to MSS in WP4C
(excerpt from Annex 14 of 4C/338: Chairman’s Report of 4th WP4C)

•Method A – No Change to the regulatory provisions of the Radio
Regulations
Advantages
–based on recent studies the spectrum requirements for AMS(R)S up to the year 2025 can be accommodated
in the frequencies bands according to RR No. 5.357A;
–the generic allocation to the mobile-satellite service in the bands 1 525-1 559 MHz and 1 626.5-1 660.5 MHz
remains unchanged, [ensuring the flexible and efficient use of them];
–[no undue constraints are placed on the existing systems operating in the bands 1 525-1 559 MHz and
1 626.5-1 660.5 MHz;]
–the coordination process in these bands between operators at regular annual multilateral coordination
meetings, based on the capacity-planning approach, proves [some] effectiveness over the last 10 years for
accommodating AMS(R)S spectrum requirements;
–[There are no amendments to the RR Article 9 provisions for satellite coordination.]
–[no dissatisfaction with the coordination outcome for an AMS(R)S network has been raised to the level of the
notifying Administrations resulting in an administration invoking the priority provision of RR No 5.357A. Some
administrations are of the view that the existing regulatory procedures are adequate to ensure that the
spectrum requirements of AMS(R)S systems can be satisfied.]
Disadvantages
–[since no additional procedures will be included in the Radio Regulations, the problems that have led to the
adoption of A.I. 1.7 will not be solved.]
–[Meeting the AMS(R)S needs in these bands means existing (non AMS(R)S) MSS operations in the bands 1
545-1 555 MHz and 1 646.5-1 656.5 MHz may have to yield spectrum causing a reduction in the quality of
service for some users] [Editor’s note: more contributions are needed to explain it.]
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                                                   Civil Aviation Bureau Japan




WP4C activities (6)
Possible outcome of WP4C (draft CPM text)
Two extreme methods (shown in WP4C activities (3) and (5))and
some intermediate methods are on the floor

•Assign AMS(R)S spectrum before MSS (favorable to AMS(R)S)
    •Establish a global-basis frequency coordination scheme for
    AMS(R)S and assign spectrums for AMS(R)S operators
    •Submit the above result to regional MSS frequency coordination
    meetings (e.g. Operators Review Meeting in Regions 1 & 3) and
    assign spectrums for MSS operators while avoiding AMS(R)S
    allocations
    •Measures to be stipulated in footnote and/or recommendation
    and/or resolution

•No change at all (favorable to MSS)
    •Leave the application of 5.357A (give priority to AMS(R)S) to
    regional MSS frequency coordination meetings
    •No change to footnote and resolution
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                                                  Civil Aviation Bureau Japan




WP4C activities (7)
Draft CPM text and debates on it
•WP’s outputs are draft CPM text on Agenda Items
•Draft CPM text consists of the list of proposed measures with
advantages and disadvantages on each measure

•AMS(R)S and MSS debate on draft CPM text to impair the
opponent’s measure
   •Both parties try to hit opponent’s sensitive points to lessen the
   likelihood of adoption at WRC
   •The debate remains as far apart as ever
   •Our aim is to keep the texts favorable to AMS(R)S as far as
   possible in draft CPM text
   •There are two WP4C meetings (March and June 2010) left before
   the deadline of CPM text (June 2010)


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                                                 Civil Aviation Bureau Japan




National Activities
Discussion in Japan
•Mobile Satellite Committee has been established
•Preparation for WRC-12
•Development of Japan’s position on Agenda Items

•MSS operators in Japan generally oppose to Agenda Item 1.7
stemmed from fear of losing spectrum
    •We actively discuss with MSS operators to gain their understanding
    •The objection largely is based on ignorance, so it is needed to
    explain how small our requirements will be compared with MSS’s
    requirements and have upper limit




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                                                 Civil Aviation Bureau Japan




Regional Activities
Discussions in Regional Groups
•APT
•APG 2011-2 was held in June 2009
•Generally support the study conducted in WP4C in its Preliminary Views
        •support studies for estimation method
        •support studies for regulatory provisions to ensure long-term
        spectrum availability and access for AMS(R)S
        •support additional allocations, if the requirements can not be
        satisfied without placing undue constraints on MSS
        •The comment was raised that 5.357A and Res. 222 give
        sufficient priority to AMS(R)S
        •APG 2011-3 (2012-3?) will be held in March 2010

        •Other Regional Groups (ATU, CEPT, CITEL, LAS and RCC)
        are also discussing this issue

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                                                   Civil Aviation Bureau Japan




ICAO Activities
Development of ICAO Position
•WG-F
•WG-F is the focal point on all aspects related to the development of the
ICAO Position
•In June 2009, Council approved the ICAO Position
•ICAO to present the ICAO Position to Regional Groups
•The ICAO Position would be updated at WG-F

•JCAB supports the ICAO Position for Agenda Item 1.7




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                                                          Civil Aviation Bureau Japan




  Preparatory works for the Conference(1)
  ICAO’s role in the preparation

                                                     Proposals
                                   Regional Groups


                     Give advice
 ICAO
                                                     Proposals
                                   Administrations                                WRC-12

             ICAO Position                            Position
                                       ITU-BR
  SG4        Give advice
                                                      Reports
         WP4C                           CPM

•ICAO is allowed to participate in Regional Groups and ITU-R SGs, but not allowed to
speak up (only give advice of aviation matter to the administrations)
•ICAO only has status of observer at the Conference
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                                                   Civil Aviation Bureau Japan




 Preparatory works for the Conference(2)
 Importance of participation to preparatory works
 •ICAO’s influence is limited to;
     •one position, but not strong enough as administrations
     •give guidance of aviation matter to administrations in ITU-R SGs
     and Regional Groups

 •National and Regional Proposals
     •one administration has one proposal and one regional group has
     one proposal to each Agenda Item

 •Reports of Study Groups in ITU-R
     •study results of Agenda items are contributed to WRC as CPM text


Aviation communities are encouraged to participate in
national, regional and SG activities to obtain favorable
positions, views and reports
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               Civil Aviation Bureau Japan




Thank you




            Questions and comments to:
              Yoshiyuki Mikuni (Mr.)
              mikuni-y2bd@mlit.go.jp


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