The second meeting in the 2008-2011 study cycle of working group 5C (WP 5C), which covers fixed wireless systems (FWS) and HF systems in the land mobile and fixed services context, was held last 27 October to 5 November in Geneva. WP 5C pertains to Study Group 5 (SG 5), which oversees issues involving terrestrial services.
The 93 documents submitted to the consideration of WP 5C were distributed, depending on the respective subjects, among five subgroups:
- Subgroup 5C-1 - issues concerning spectrum below 30 MHz ( ≤ 30 MHz);
- Subgroup 5C-2 - issues concerning spectrum between 30 MHz and 18 GHz;
- Subgroup 5C-3 - issues concerning spectrum above 18 GHz ( ≥ 18 GHz);
- Ad Hoc Working Plan Subgroup - issues concerning items 1.8, 1.15 and 1.20 of the meeting agenda of the 2011 World Radiocommunication Conference (WRC-11);
- Ad Hoc Recommendations Subgroup - issues concerning the updating of recommendations.
The following stand out among the documents examined:
- The revision of Recommendation UIT-R F.1247 on ''Characteristics of Fixed Service Systems to Use in Studies on Spectrum Sharing with Space Research Services, Space Operations and Satellite Earth Exploration in the 2025-2110 MHz and 2200-2290 MHz Frequency Bands'', adding four new orbital positions to protect fixed service system emissions, specifically from geostationary satellites;
- The revision of Recommendation ITU-R F.1249 on ''Maximum Limit of Equivalent Radiated Isotropic Potency from Fixed Service Stations that Share with Intersatellite Service the 25.25-27.50 GHz Frequency Band'', adding three new orbital positions to protect fixed service system emissions;
- The revision of Recommendation ITU-R F.387 on ''Frequency Planning for Fixed Wireless Systems to Use in the 10.7-11.7 GHz Frequency Band'', adding a new annex with frequency planning for 7 MHz, 14 MHz and 28 MHz of spacing between channels;
- The revision of Report ITU-R F.2107 on ''Applications and Respective Characteristics of Fixed Wireless Systems to Use in the Frequency Bands between 57 GHz and 130 GHz'', meaning to update the propagation models and add new relevant technical parameters for the implementation of such systems.
The revision of recommendations ITU-R F.1247 and F.1249 was submitted to consideration by Study Group 5. The remaining working documents require further development or more thorough study, and will thus be examined at the next meeting.
