An overview of Scientific services and their access to the frequency spectrum in WRC 2015

In view of the impending World Radiocommunication Conference (WRC 2015) the Study Group ((Scientific services)) (SG7) of ITU-R is working on the agenda items (AI) of its attribution. The aim of the paper is to give an overview on the ongoing subject matters. The authors reminds scientists of the continuous efforts to be made not only on the AIs attributed to SG7 but also on numerous subjects in co-operation with other Study Groups in order to establish common rules of sharing frequency bands. Scientists are invited to fully collaborate to this common task.