UK SG9
CP(01)46
ITU-R Working Party 9B
Geneva, 12– 20 March 2001
Delegate’s Report
1. Introduction
Working Party 9B met in Geneva from 12- 20 March 2001. Main responsibilities for this
working party include radio frequency channel arrangements, radio system characteristics,
interconnection, maintenance, and various applications. The UK was represented by Alex
Dixon (RA), Jim Nixon (RA), Mrinal Patel (RA) and Fabian Varas (BT). A total of 45 input
documents were considered and 30 temporary documents were produced.
2. Structure of Work
The 4 Sub-Working Parties created at the first meeting of this study period were assigned
with input documents to be considered. An additional joint –adhoc 9A/9B was also created.
The details of the work structure is as follows:
SWP 9B-1, Systems using high altitude platform stations (HAPS), chaired by Mr H. Kimball
(USA)
SWP 9B-2, Unwanted Emissions and SDH-related issues, chaired by Mr. R. Macchi (Italy)
SWP 9B-3, Requirements and Vision of FS Spectrum, chaired by Mr R. Broemme (Germany)
SWP 9B-4, Radio Frequency Channel Arrangements, chaired by Mr E. Jacobs (USA)
Joint-Adhoc 9A/9B- Review of Recommendation F.745, chaired by Mr R. Ohmoto (Japan)
3. Main Issues
SWP 9B-1
 A working document was developed on the use of DCA to facilitate sharing the 28/31
GHz band between the FS using HAPS and other FS applications. This work was initiated
by an input paper from Japan which considers DCA as a strong solution to facilitate
sharing between the HAPS based FS and conventional FS systems. However, until now
this study has only considered P-MP FWA as conventional FS so further work will
therefore be required to examine sharing with P-P systems as well
 A PDNR was agreed on the evaluation of the impact of the FS using HAPS on other fixed
services across international borders in the 27.5-28.35 and 31.0-31.3 GHz bands under Q.
ITU-R 212-1/9
 Based on an input from Japan a proposed PDNR was also agreed on a methodology for
interference evaluation, technical parameters and operational techniques for frequency
sharing between FS using HAPS and other FS in the 28 and 31 GHz bands
 Under resolution 734, Japan conducted a preliminary study on the feasibility of HAPS in
the FS and mobile services in frequency bands above 3GHz allocated exclusively for
terrestrial radiocommunicatons. This temporary document also contains the CPM text
addressing resolution 734.
 The UK contributed work on frequency sharing between systems in the FS using HAPS
and other systems in the FS in the bands 47.2-47.5 and 47.9-48.2 with the intention of
upgrading the existing PDNR to a DNR. However there were objections to this from
Japan and based on this the meeting agreed that it would be premature to upgrade the
PDNR to a DNR until the imp[act of mitigation techniques have been fully considered.
The study provided a revision the existing PDNR.

WPs 9B and 9D agreed to reply to a liaison statement from WP 4-9S on the impact of
HAPS interference to EESS(passive) at 31.3-31.8 GHz proposing modifications to the
draft CPM text developed by 4-9S
SWP 9B-2
 3 liaison statements received from SG 1 were considered. These contained information on
the new revised SG1 recommendations on unwanted emission regulations and requests
for contributions on activity that WP1A started in order to amend the Radio Regs
definitions in Art. S1 and App.S3. WP9B responded with a single liaison offering the
relevant recommendations of F.1191 for consideration by WP1A.This information deals
with definitions for spurious and OOB emissions and their boundaries.
SWP 9B-3
 The USA submitted a contribution to revise recommendation F.1102 which gives
characteristics of fixed wireless systems operation in frequency bands above about 17
GHz. The intention of the proposal was to provide an update to the existing
recommendation to include significant changes in the application of microwave
applications such as high density deployments with particular emphasis to subscriber
based applications. (9B/TEMP34r1)
 Germany, France and USA put forward proposals to revise ITU-R F.1498 on deployment
characteristics of fixed service systems in the 37-40 GHz band. With considerable
discussion on this within the SWP it was agreed to leave the document as a PDNR at this
stage since new information from Brazil will be provided at the next meeting. It was also
ensured that any changes proposed were in line with the UK. The changes to this
recommendation as well as F.1102 were highlighted in a liaison statement to WP 4-9S
concerning the new methodology to be used for evaluation of the impact of space to earth
interference from the FSS on the FS in frequency bands where fading due to rain is the
predominant fading mechanism.
 The working document on Spectrum Vision for the FS was updated to include the
contributions from Japan. No contributions were received from Regions 1 and 2 at this
meeting and rapporteurs for these regions have to be agreed.
 Germany contributed an update to the fixed service spectrum requirements for IMT-2000
infrastructure networks. This contribution was based on agreements within CEPT on a
similar work item. Japan also provided an update to this working document in particular
to include a description of the star or sub-star methodology, which will be deployed in
Japan.
 Canada submitted in input on a co-ordination process between area licensed fixed
wireless systems to test the waters of their methodology on the international scene. In
general the view of the SWP was that domestic area licensed systems are outside the
scope of agreement of the ITU. However, Canada was of the view that their methodology
could be employed on a cross border basis. It was agreed to draft a question related to this
work and the document from Canada would be treated as information at this stage.
 A preliminary draft liaison statement was drafted to JTG 1-6-8-9 to the questions posed to
9B on terrestrial wireless interactive multimedia systems operating under the fixed
service regarding the terminology, applications, spectrum, sharing issues and regulatory
developments
SWP-9B4
 Annex 2 of ITU-R.595-6 was revised to reflect the changes in the use of the 18 GHz
North American FS channel plan in the USA. The changes were approved to go to SG9
 The UK submitted a proposal to include the 7 and 3.5 MHz channel spacings in the
existing ITU-R F.1497 channel arrangement for the 55.78- 59 GHz band. These proposals
were agreed and approved to go to SG9



The UK submitted another proposal to include the 7 and 3.5 MHz channel spacings in the
existing ITU-R F.1496 channel arrangement for the 51.4-52.6 GHz band. These proposals
were agreed and approved to go to SG9
Canada submitted a proposal to include arrangement based on 56 MHz blocks in a second
annex to the 31.8-33.4 GHz channel arrangement, which is currently going through the
approval process. After considerable discussion it was agreed to include this example
arrangement to the recommendation.
US LMDS plan was incorporated into the ITU-R F.748-3 which utilises parts of 28 GHz
and 31 GHz
Further Issues
A correspondence group was set up to contribute towards WRC-03 Agenda Item 1.8.2
between WPs 9B and 9D. This CG would specifically look at levels of unwanted emissions
from the Fixed Service (except HAPS) falling into EESS bands. Particular FS bands that have
been identified by the science community are 31, 32 and 52 GHz.
Future Work
UK input is required for the following:



Continue contribution towards fixed spectrum requirements for IMT-2000 infrastructure
networks.
Protection of adjacent passive services from the fixed service in the bands 31.0-31.3,
31.8-33.4 and 51.4-52.6 GHz
Draft Question on frequency co-ordination aspects of area licensed fixed wireless systems
Mrinal Patel
RA2/FTSL
Annex
9B/TEMP/
28
Details
Liaison Statement to
WP1A
Source doc.
9B/47,
9B/49, 9B/50
29
30 rev.1
Draft Report of SWP 9B2
Draft Revision of ITU-R
F.595.6
Draft Revision of ITU-R
F.1497
Draft Revision of ITU-R
F. 1496
Draft Revision to PDNR
9B/79
31
32rev.1
33rev.1
9B/72
9B/71
8A-9B/45,
9B/82
9B/77
34rev.1
Draft Revision of ITU-R
F.1102
35 rev.1
Preliminary Draft
Modification of ITU-R
F.387-8
Working Document
(towards PDNR)
9B/78
Draft Amendment of
PDNR on ITU-R
F.[HAPS-IB]
Draft Revision of DNR
ITU-R [Doc.9/11(Rev.1)]
DNR ITU-R F.
[9B/Arrgmts-400MHz]
9B/69
Proposed Modification to
the Draft revision of ITUR f.74839(DOC.9/BL/120
Preliminary Draft
Revision of ITU-RF.1498
9B/61, 9B/80
43
Preliminary Study and
draft CPM text addressing
Resolution 734
9B/70
44
Revision of Working
Document on Spectrum
Vision for the Fixed
Service
9B/TEMP/26
36
37rev.1
38 rev.1
39
40
41
42
9B/68
9B/60
9B/44
9B/44,
9B/64,
9B/74, 9B/76
Proposed PDNR ITU-R F. 9B/67
[HAPS-FWA]
Title
Reply to liaison Statement from SG 1 on Question
ITU-R 222/1 and WRC-03 Agenda Item 1.8.1 for
reviewing definitions of the spectral properties of
transmitter emissions
Report of 9B-2
Draft Revision to reflect changes in use of 18GHz
in N. America
RF channel arrangements for systems in the FS
operating in the band 55.78-59 GHz
RF channel arrangements for systems in the FS
operating in the band 51.4-52.6GHz
Frequency Block arrangements for FWA systems
in the 10.15-10.3/10.5-10.65 GHz
Characteristics of Fixed Wireless Systems
Operating in frequency bands above about 17
GHz
RF channel arrangements for radio relay systems
operating in the 11 GHz band
Dynamic Channel assignment to facilitate sharing
28/31 GHz band between FS using HAPS and
other Fixed Service
Evaluation of impact from the fixed service using
HAPS on other fixed services across international
borders in the bands 27.5-28.5 and 31.9-31.3 GHz
Radio Frequency Arrangements for systems in the
fixed service operating in the band 3.8-33.4 GHz
Radio Frequency Channel arrangements for
digital radio relay systems operating in the
frequency band 406.1-450 MHz
Radio Frequency Channel Arrangements for
systems in the fixed service operating in the 25,
26 28 [and 31 ]GHz bands
Deployment Characteristics of Fixed Service
systems in the 37-40 GHz for use in sharing
studies
Methodology for interference evaluation ,
technical parameters and operational techniques
for frequency sharing between the fixed service
using HAPS and other fixed service in the bands
27.5-28.35 and 31.0-31.3 GHz
Feasibility of HAPS in the fixed Service and
mobile services in the frequency bands above 3
GHz allocated exclusively for terrestrial
radiocommunication
45
Revision of Working
Document
Revision to
PDNR[9B/HAPS1]
9B/TEMP/24
Reply to Liaison
statement to 4-9S
Joint adhoc 9A/9B
9D/30,
9D/52
9B/53, 9B/66
9B/59
52
Report to be treated as
information
CANCELLED
Preliminary Draft New
Question
Liaison to WP 4-9S
53
Liaison to WP 4-9S
9B/64,
9B/74, 9B/76
54
Preliminary draft liaison
statement to JTG 1-6-8-9
9B adhoc 1
9B/56, 9B/73
Liaison Statement to WPs
8A, 8B, as appropriate
WRC –03 Agenda Item
1.8.2
9B/51
46
47
48rev.1
49
50
51
55
56
57
9B/62
9B/45, 9B/75
9D/33
Consideration of FS requirements in deployment
scenario of IMT-2000 infrastructure networks
Frequency sharing between systems in the fixed
service using HAPS and other systems in the fixed
service in the 47.2-47.5 and 47.9-48.2 GHz
Impact of HAPS interference to EESS (passive) in
the 31.3-31.8 GHz band.
Deletion of certain recommendations which are
not reprinted and proposed revision of ITU-R
F.745
A co-ordination process between area licensed
fixed wireless systems
Frequency Co-ordination aspects for Area
Licensed Fixed Wireless Systems
A new methodology to be used for the evaluation
of the impact of space to earth interference from
the fixed satellite service on the fixed service in
frequency bands where fading due to rain is the
predominant fading mechanism
Fixed Service Parameters for use in sharing
studies under resolution 84 in the frequency range
37.5 –42.5 GHz
Terrestrial Wireless Multimedia systems operating
under the fixed service
Treatment of preliminary documents of TG 1 of
JRG 8A-9B
Preliminary study and CPM texts addressing
resolution 734
Correspondence group for ITU-R WP 9B and 9D