High-Precision Ranging Method of 5G NR Co-Band PRS in Industrial Internet Scenarios

Round 1

Reviewer 1 Report

Technical Peer Review for the paper: High-Precision Ranging Method of 5G NR Co-Band PRS in Industrial Internet Scenarios

 

Generally speaking, the authors have presented a very pertinent topic in the domain of Industrial Internet and 5G NR systems. The primary focus on designing a high-precision ranging method using Co-Band PRS signals for industrial internet scenarios stands out as a valuable contribution. The need for such a method has been adequately motivated in the introduction and background sections. The topic is very timely given the growth in 5G and the burgeoning demand for precise indoor localization in industrial environments. It provides a comprehensive overview of existing technologies and their limitations, setting a solid base for the proposed method. The idea of superimposing a low-power PRS signal onto the communication signal without occupying extra communication resources is innovative. The proposed weighted-window coarse synchronization method and the iterative DLL algorithm both represent significant advancements in the field. The paper showcases a promising approach to high-precision ranging in 5G NR systems for industrial internet scenarios. The methodology seems robust, and the results are encouraging. With a few revisions and enhancements, this paper can stand out as a significant contribution to the field.

 

 

Despite its general competence, here come some areas for Improvement: First, the abstract could be more concise. The essence of the method and its results could be depicted with more clarity for readers to quickly grasp the crux. The paper would benefit from a comparative analysis with existing methods in terms of performance, cost, and applicability. Consider including a section or a table that clearly outlines the benefits of using the proposed Co-Band PRS method over existing techniques in a summarized manner. Furthermore, in the introductory part, please consider including RIS which is an game-changer for 6G communications and localization, and the relevant references [1]-[3].

 

[1] T. Mazloum et al., "Impact of Multiple RIS on Channel Characteristics: An Experimental Validation in Ka Band," 2023 Joint European Conference on Networks and Communications & 6G Summit (EuCNC/6G Summit), Gothenburg, Sweden, 2023, pp. 13-18, doi: 10.1109/EuCNC/6GSummit58263.2023.10188341.

 

[2] Huo, Y.; Lin, X.; Di, B.; Zhang, H.; Hernando, F.J.L.; Tan, A.S.; Mumtaz, S.; Demir, Ö.T.; Chen-Hu, K. Technology Trends for Massive MIMO towards 6G. Sensors 2023, 23, 6062. https://doi.org/10.3390/s23136062

 

[3] M. Luan, B. Wang, Y. Zhao, Z. Feng and F. Hu, "Phase Design and Near-Field Target Localization for RIS-Assisted Regional Localization System," in IEEE Transactions on Vehicular Technology, vol. 71, no. 2, pp. 1766-1777, Feb. 2022, doi: 10.1109/TVT.2021.3135275.

Author Response

Thank you very much for taking the time to review this manuscript. Those comments are all valuable and very helpful for revising and improving our paper, as well as the important guiding significance to our research. We have studied the comments carefully and have made corrections which we hope meet with approval. Revised portions are marked in red in the paper. 

Please see the attachment.

Author Response File: Author Response.pdf

Reviewer 2 Report

The manuscript, entitled "High-Precision Ranging Method of 5G NR Co-Band PRS in Industrial Internet Scenarios, was submitted to the Applied Sciences for consideration of publication. I have provided detailed comments and suggestions below:

1. The author of this paper designs a reception solution based on a co-band positioning reference signal (PRS). There was a need for rewriting the abstract because it was not perfect and reflected the full manuscript work.
2. In Figure 1, 5G NR Co-Band Communication and Positioning Fusion System" wireless channel section, check again. In this section, only one channel or different channels are used because the authors indicated two terms related to channel first: wireless channel and one AWGN.
3. Related work is missing in the manuscript; please add a separate section or summarize related work from your proposed simulation.
4. In the result section, AWGN and Rician channels consider why Nakagami channels do not.
5. Need for more explanation of the result in details.
6. Novelty and problem domains are both missing, so highlight them both in the manuscript or add a separate section.
7. Add latest reference and compared your work to latest work.

Minor editing of English language required. 

Author Response

We thank you for the critical comments and helpful suggestions. Those comments are all valuable and very helpful for revising and improving our paper, as well as the important guiding significance to our research. The modified text or parts have been highlighted utilizing red font text in the revised version of our paper.

Please see the attachment.

Author Response File: Author Response.pdf