CJK IMT 28

Xi’an, China

2-3 Jun. 2011

CJK IMT 28, Xi’an, China 1/4

CJK-IMT28-014

Possible contribution forRevision of Rec. ITU-R M.1580/1581

ATARASHI, Hiroyuki

(atarashi@nttdocomo.co.jp)

2/4CJK IMT 28, Xi'an, China

Background

WP 5D had finalized the revision of Rec. ITU-R M.1580/1581 in its 9th meeting. However, a point was raised in the Plenary on how to appropriately portray information in these documents related to bands where IMT is being deployed on a regional or national basis that are not specifically identified for IMT in the ITU Radio Regulations.

In the 10th meeting of WP 5D, the input contribution 5D/917 (Russian Federation) proposed complete removal of information regarding to the emission limits for such non-IMT bands.

Significant discussion was held on this issue in the meeting, however, WP 5D has reached no conclusion at this point in time.

The planned finalization of both Recommendations is scheduled for the 12th meeting of WP 5D (planned in October, 2011).

ARIB will prepare a contribution on this issue based on the views explained in the next slide.

3/4CJK IMT 28, Xi'an, China

Views on Rec. ITU-R M.1580/1581 (1)

As indicated in the scope and recommends part, these Recommendations just provide unwanted emission characteristics of IMT-2000 base/mobile stations.

Scope: This Recommendation provides the generic unwanted emission characteristics of IMT-2000 of IMT-2000 base stations …

recommends 1) that the unwanted emission characteristics of IMT-2000 base stations should be based on the limits contained in the technology specific Annexes 1 to 6 which correspond to the radio interface specifications described in § 5.1 to 5.6 of Recommendation ITU R M.1457.

The contents of these Recommendations should be regarded as technology specifications of IMT-2000 radio interfaces and should not be limited to the information for the IMT bands.

Even in the non-IMT bands, other services were taken into account properly in developing of unwanted emission characteristics for IMT-2000 stations.

noting a) the work carried out by standardization bodies to define limits to protect other radio systems and services from interference and to enable coexistence between different technologies;

4/4CJK IMT 28, Xi'an, China

Views on Rec. ITU-R M.1580/1581 (2)

With regard to the information on non-IMT bands, we support Note 7 in the draft revisions agreed WG-TECH Plenary in the 9th meeting.

NOTE 7 – Frequency bands or parts of the bands referenced in this recommendation which are marked with “#” are not identified for IMT in the ITU Radio Regulations.

On the other hand noting c) and Note 7 suggested in the 10th meeting could be a possible approach.

noting c) That the notes and annexes of this recommendation - being based on the ongoing work in external organizations – in order to reflect the wide applicability of IMT-2000 technologies and to maintain consistency with the technology specifications, may contain material which reflects information related to the technology applications in bands beyond those identified for IMT.

Note 7 - Material where “noting c” applies is marked with “#”