Spectrum sharing between terrestrial 5G and incumbent networks in the satellite bands presents a promising avenue to satisfy the ever-increasing bandwidth demand of the next-generation wireless networks. However, protecting incumbent operations from harmful interference poses a fundamental challenge in accommodating terrestrial broadband cellular networks in the satellite bands. State-of-the-art spectrum-sharing policies usually consider several worst-case assumptions and ignore site-specific contextual factors in making spectrum-sharing decisions, and thus, often results in under-utilization of the shared band for the secondary licensees. To address such limitations, this paper introduces CAT3S (Context-Aware Terrestrial-Satellite Spectrum Sharing) framework that empowers the coexisting terrestrial 5G network to maximize utilization of the shared satellite band without creating harmful interference to the incumbent links by exploiting the contextual factors. CAT3S consists of the following two components: (i) context-acquisition unit to collect and process essential contextual information for spectrum sharing and (ii) context-aware base station (BS) control unit to optimize the set of operational BSs and their operation parameters (i.e., transmit power and active beams per sector). To evaluate the performance of the CAT3S, a realistic spectrum coexistence case study over the 12 GHz band is considered. Experiment results demonstrate that the proposed CAT3S achieves notably higher spectrum utilization than state-of-the-art spectrum-sharing policies in different weather contexts.
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A Survey of Policy Issues in Spectrum Sharing in the 12 GHz Band
When considering spectrum sharing, the concept of regulatory certainty drives regulators to consider worst-case scenarios to evaluate potential impacts to incumbents. If a second use will never interfere, then all is good. However, in scenarios where the worst case is unlikely to occur, it means alternate uses may not be considered, the alternate use may have unnecessary limitations, or the incumbent may lose access to the band if the new use is deemed in the public interest. This paper reviews the recent his- tory and discourse associated with spectrum sharing in the 12 GHz band. The paper examines socioeconomic considerations of the band. Finally, opportunities for future policy research with a focus on developing a dynamic policy framework for coexistence be- tween services in the band are presented.
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- Award ID(s):
- 2245910
- PAR ID:
- 10520582
- Publisher / Repository:
- IEEE
- Date Published:
- ISBN:
- 979-8-3503-1764-0
- Subject(s) / Keyword(s):
- Dynamic Spectrum Policy Commercial Spectrum Allocation Spectrum Sharing Rural Digital Access
- Format(s):
- Medium: X
- Location:
- Washington, DC, USA
- Sponsoring Org:
- National Science Foundation
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