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Abstract Cognitive radio (CR) was coined to address evolving user needs two decades ago. Since then, it also has been considered a way to mitigate perceived spectrum scarcity in various application areas. In this article, the status of military CR research is assessed through a systematic literature review of 193 articles, from 2013 to 2020, using IEEE thematic topics, technology readiness levels, as well as comprehensive capability meta-model as analytical frameworks. The annual distribution of military CR research indicates continuing interest. The military CR research seems to be prolific on topics like waveform design and security, not forgetting a steady interest in CR networking topics. Significantly low numbers of papers address applications, services, and standardization. In general, military CR research seemed sporadic and scattered. Our data suggest that a transition from individual techniques, component-level subsystem research in the direction of systems engineering approach, and system-level studies has not yet happened, and the overall TRLs remain low. The absence of publicly articulated comprehensive treatment of the notion of military cognitive radio system is graphic and has led to disjointed, scattered research at the subsystem level.

Abstract United Nations Sustainable Development Goals (SDGs) are becoming an increasingly important theme for researchers in multiple fields to investigate. In this paper we look at the process of how 6G researchers and other experts identified ways in which mobile communications is linked with the UN SDGs while writing a new 6G white paper on the topic. In a team of around 40 members consisting of representatives of academia, industry, and governmental bodies, we developed a sustainable vision for 6G, identified linkages between 6G mobile communications and the UN SDGs, and came up with a preliminary plan of action for how to reach the set goals, all published in a white paper. It is to be noted that the technological development for 6G is very much in its infancy, thus we concentrated our work on mobile communications in general and looked at the possible linkages between 6G and the UN SDG's from the perspective of what could be and what should be. In this paper we look into the detailed operations of the expert group and describe the mapping process for finding the linkage between the UN SDGs and 6G in a way that may guide other researchers in related endeavours. The aim of this paper is threefold: 1) to briefly present the relevant linkages between the UN SDGs and mobile communications, 2) to look at the process of identifying the relevant UN SDGs for mobile communications research from a theoretical perspective, and 3) to formulate a working mapping process to be widely adopted. We will describe the background, i.e. the findings of the white paper expert group, and then move on to describing the process itself, and finally present a mapping process to be adopted.

Abstract Recent transition from mobile telephony to daily consumption of mobile data presents the challenge of adequate spectrum availability. Besides regulators and operators, this challenge faces both public safety authorities and military as well. This paper investigates how selected spectrum sharing concepts (namely, European Licensed Shared Access (LSA) and US Citizens Broadband Service (CBRS)) support the military interests either as a Primary User (PU) or as a Secondary User (SU) and whether these concepts facilitate temporal adjustments of national defence from peace time mode of operations to hybrid warfare or to large scale homeland defence. In this paper we have shown that military spectrum needs vary from one scenario to another and that Shared Spectrum Access may support expected needs of spectrum in times of most dire stress. Both of the concepts reviewed have built in dynamism, which however does not support PU-SU role changes across tiers.