Institute of Transportation, MOTC

       The C-band (3300-4200 MHz) has been considered an essential band for 5G development internationally due to the advantages of both coverage and capacity in the mid-band. With the rising demand for spectrum, Taiwan has released 3300-3570 MHz for 5G in 2020 and designated 3570-4200 MHz for mobile communications in the long-term planning.
       However, the C-band has been widely allocated to fixed-satellite services (FSS) in the past, there are some incumbent users currently using the remainder of the C-band, including ST-2, FSS downlink, and point-to-point microwave link. To strike a balance between the national economic development and the interests of the incumbent users, the spectrum planning of the remaining C-band needs to be analyzed as early as possible. Therefore, the most appropriate arrangement can be made for all stakeholders and the spectrum resources can be allocated effectively.
       This study adopts a scenario analysis to analyze how the remainder of the C-band spectrum can be used for 5G in Taiwan. First, the spectrum demand assessment is used to understand the spectrum usage. Secondly, the four factors, namely policy and legality, technical, economic, and social, will be used to analyze the plans. Finally, the results of the above discussion are considered in the evaluation of the spectrum scenarios.
In summary, this study is expected to provide the results to spectrum authority, related communication service providers, incumbent users, and other stakeholders who may be affected by spectrum planning for future decision-making.