Article S.5 of the Radio Regulations, the Table of Allocations, identifies a number of other services with a primary allocation, such as the Fixed Service or Broadcast satellite service in all Regions or Fixed Satellite Service in Regions 2 and 3.

A number of Resolutions were passed at WRC 2000 for the ITU-R to study sharing and coordination issues relating to this band. For example, Resolutions 223 and 225 invite the ITU-R to study the sharing and coordination issues between the terrestrial and satellite components of IMT-2000.

Various issues relating to this band are being considered by WP 8F, including:

• what would be the best frequency arrangement for terrestrial IMT-2000 within this band?
• what arrangements would permit co-frequency / adjacent band or geographically separated compatibility between terrestrial and satellite components of IMT-2000?
• what would the implications of sharing (including coverage) between terrestrial IMT-2000 and systems in the Fixed Service, for example using point to multi-point technology?

Visualyse Professional can be used to analyse a wide range of sharing scenarios, both in-band and out-of-band, power control and including monte-carlo techniques. Propagation models are available for either mean loss - such as COST 231 - or predicted loss for specific terrain using ITU-R Rec. 452.

Visualyse Professional can model terrestrial IMT-2000 base stations, random distributions of users, fixed service (point to point or point to multi-point), MSS (both satellites and handsets), BSS, or indeed any of the other services allocated to this band.