In view of the possible interference problems between future 5G and FSS systems, this research conducts theoretical analysis and calculation for the protection distance between different scenarios, and analyzes the appropriate conditions for interference suppression when the two systems coexist. The measurement results show that it is impossible to coexist between 5G and FSS if no improvements are made.
Furthermore, it affirmed that with the implementation of appropriate mitigating measures, such as band-pass filter (BPF), FSS systems operating in the 3.61 - 3.71 GHz band can co-exist with systems of future 5G services operating in the 3.3 – 3.57 GHz band, based on the laboratory and field experiment performed.
There are many questions yet to be answered by future research, experiment and demonstration regarding dynamic spectrum sharing technologies, architectures, operation models, and associated regulatory policies. This year's work completed and was detailed in Final Report with suggestions provided to existing technical specifications and regulations for spectrum sharing.
In order to understand the development of the regulation of 5G, we analyze the roadmap of 5G technology, the innovation application for vertical industries, and the 5G spectrum policy and license scheme in 9 comparative countries, including the European Union, United Kingdom, United states of America, Australia ,Japan ,Korea, Germany, Ireland and Canada.
This research recommends the candidate band for 5G spectrum in Taiwan, we recommend the first step release band for 5G should include 1775-1785/1870-1880 MHz , 2355-2390MHz, 3300-3570MHz and 27-29.5 GHz. Then the next step for the second release band should review the opportunity for release 600MHz, 800MHz, 1.5GHz and 4.5-5GHz. We advise the regulator can research spectrum sharing mechanism on 3.8-4.2 GHz. In the high band, the candidate band should be 24.25-26GHz and 37-40GHz. We also recommend 64-71GHz can be unlicensed band.
Wireless microphone devices are primarily used to transmit sound to recording or amplifier equipment and are widely used in communications companies, broadcast sports events, news gathering, theaters, schools, public events and video programming, etc. Under the license and management of the Commission, FCC, depending on the user's identity and the wireless microphone application context, Licensed and Unlicensed can be obtained separately, mainly operating in the available spectrum of the TV band. It must comply with the relevant technical specifications of 47 CFR Part 74, Subpart H - Low Power Auxiliary Stations and 47 CFR 15.236. It is known from the technical specifications that wireless microphone devices are defined as Low Power Auxiliary Stations (LPAS). The relevant technical specifications and operational principles should be established without affecting television equipment (and other licenses in this band). The premise of the device, to protect the TV broadcast and other secondary operations, is the focus of the wireless microphone interference.