A Review of Cognitive Radio Smart Grid Communication Infrastructure Systems
Round 1
Reviewer 1 Report
-This is a review paper
-More technical details are needed for the proposed architecture in the section: “6. Proposed Cognitive ICTs Infrastructure “ (i.e. more for fog nodes operations , 5G mobile services etc) and if it is possible with new additional diagrams or figures for some internal operations. This session is short comparing to the other ones.
-Explanation of the meaning of the two criterion data ratio and packet size is needed. (in 4.3 Fog Computing as a solution, p.10, line 386)
-In figure 5 there is a title: “Smart IoT fog-based architecture [93]”. Further explanation needed in the text regarding the [93] reference
Author Response
Please see the attachment.
Author Response File: 
Author Response.pdf
Reviewer 2 Report
I have some minor comments, which are elaborated as follows.
1. Please provide more quantitative data in the Abstract section. Further, problem statements and rationale ought to be included in this section. By doing so the readers will not skip the paper after going through the Abstract.
2. Please provide some information regarding the common optimization problems in this field of research.
3. Authors have accomplished a good job in reviewing the previous pertinent works; however, there are some invaluable studies, which can be considered by the authors since the benefits involved are manifold—for instance, the following works can be considered so as to improve the literature section by adding more content about different forms of smart grids and their essential components in the future, which will help readers capture the developmental history. "A new bi-objective approach to energy management in distribution networks with energy storage systems. IEEE Transaction on Sustainable Energy 2017, doi: 10.1109/TSTE.2017.2714644; Multi-area dynamic economic dispatch considering water consumption minimization, wind generation, and energy storage system, 2020 IEEE Power and Energy Society Innovative Smart Grid Technologies Conference, doi: 10.1109/ISGT45199.2020.9087689; Impact of Operational Decisions and Size of Battery Energy Storage Systems on Demand Charge Reduction,” in 2019 IEEE Milan PowerTech, 2019, pp. 1–6"
4. There are several inadvertently typo punctuation mistakes in the manuscript. Note that, a Journal paper should enjoy facility in the use of language. Facility has to do with a piece of writing that is smooth and easy to follow thanks to appropriate use of punctuations. Hence, please do a second, more focused, proofreading before final acceptance.
Author Response
Please see the attached.
Author Response File: Author Response.pdf
Reviewer 3 Report
The manuscript aims on performing an in-depth review of the most recent technological advances on ICT enablers for SGs. The transition from traditional to next-generation power grids are well elaborated pointing out the architectural principles of such systems. In the last section, a SG architecture is proposed. In order to consider the publication of this manuscript, there are some areas of improvement that should be addressed:
- The major challenges of smart grids are raised in the introductory section but are barely discussed in the following sections. For instance, security and latency requirements.
- The cognitive ICTs infrastructure proposed in Section 6 is barely elaborated. A clear alignment between the aforementioned challenges and the architectural principles should be considered.
- Even though 5G networks underpin the most recent advances on SGs, neither their functional principles nor use cases are deeply discussed in the manuscript. A closer look into 5G research projects regarding SGs might contribute on that approach.
- The state of the art can be updated with more recent publications.
Minor aspects:
- Refer to 5G as Fifth Generation Mobile Networks.
- Perform an exhaustive review of the writing and grammar
Author Response
Please see the attached.
Author Response File: Author Response.pdf
Round 2
Reviewer 3 Report
In this reviewer's opinion, the authors have reasonably addressed the requested modifications. So, the manuscript can be accepted for publication in its present form.
