WRC 2007 Agenda Items for WP 9A

Performance and availability, interference objectives and analysis, effects of propagation and terminology

The list below shows all the WRC 2007 Agenda Items for which this group is involved. Click on an Agenda Item or Resolution to get more information about which Visualyse product could be useful, and how Transfinite consultants can assist in studying this problem.

Agenda Item	Description
Agenda 1.18	This agenda item relates to sharing between FSS systems using highly inclined orbits and the fixed service in the 17.7 - 19.7 GHz bands. To facilitate sharing, PFD limits are defined in Article 21, but it has not been determined whether these values are adequate for such non-GSO systems with apogees greater than 18 000 km and orbital inclination between 35 and 135 degrees. It is therefore necessary to study: i) whether the current pfd limits would protect the fixed service, without unduly constraining development of these non-GSO FSS systems; ii) whether there are technical and operational measures that could be implemented in the fixed service to mitigate interference from these satellite systems.
Resolution 734	This resolution relates to the feasibility of use of high altitude platform stations (HAPS) in fixed and mobile service bands above 3 GHz allocated exclusively for terrestrial applications. It calls for regulatory and technical studies of methods to facilitate use of HAPS in these bands, taking into account terrestrial services in-band and other services in adjacent bands.
Resolution 951 [COM7/2]	This resolution is related to the issue of terrestrial wireless interactive multimedia (TWIM) systems, that could operate across traditional service boundaries, using a range of emerging technologies. It calls for studies to examine the effectiveness, appropriateness, and impact of the Radio Regulations with respect to these new systems. The results of these studies are to be included in the Director of the BR's Report to WRC-07 to allow consideration of this subject on a future conference agenda. See also WRC-03 Recommendation 722 [COM7/2]
Resolution 952 [COM7/3]	This resolution relates to the issue of Ultra Wide-band (UWB) systems, that have a very large bandwidth and so could operate across many frequency bands, potentially impacting a large number of receivers. These systems are not considered as Industrial, Scientific, and Medical (SIM) applications. There is therefore a need to continue studies about the issues raised by these systems, including sharing studies and regulatory procedures.