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Potential and Criticalities of the Shared Access to Spectrum – Phase 2
Ministry of Economic Development
Joint Research Centre (EC)

To complete the provision of technical and scientific elements for the informed development of the European framework for the 2.3 GHz band.

To study coexistence between mobile services and incumbents in frequency bands candidated for 5G, designing novel experimental testbed.


The project (MiSE-ISCOM) has contributed to complete the provision of technical and scientific elements in support to the development of the European regulatory framework for the introduction of wireless broadband in the 2.3-2.4 GHz band.

The methods developed for the investigation of possible interference issues are applicable for sharing studies between incumbent uses and future LTE as well as 5G systems.


The PACOS-II project is the second phase of studies on possible interference between LTE systems in the 2.3-2.4 GHz band and Wi-Fi receivers in the adjacent band. These studies are conducted further to the invitation of the European Commission to Member States to investigate the possible interference issues related to the introduction of the Wireless Broadband in the 2.3-2.4 GHz band.

The project expands and enhances the studies and experimental activities already set and started with the previous PACOS project, by carrying out further laboratory tests and measurements of radiated signals. In particular, the set of tests is significantly increased in terms of numerosity of samples and interferential investigated situations. The number of Wi-Fi devices submitted for testing has been also expanded and the interference assessment is carried out for different situations in terms of spectral adjacency between victim and interfering systems, as well as various LTE channel bandwidths.

Furthermore, the execution of the tests with irradiated signals is analysed in a new scenario, by installing a LTE radio base station connected to a few mobile terminals in a different working environment. The studies carried out on irradiated signals, finally, also caims at the characterization of both interferential effect due to the base transceiver stations and LTE user equipment.

The project, in addition, explores the methods and technologies for the shared access to the spectrum, currently discussed for both the 4G systems and for their native introduction in future 5G systems. This analysis allows to assess the need for specific theoretical and experimental investigations for coexistence in the new usage scenarios expected for next-generation wireless systems. To this end, possible updates and enhancement either for laboratory setup or for the analysis of irradiated signals are considered and proposed.