AP Association Algorithm Based on VR User Behavior Awareness
Andrzej Lewiński
Round 1
Reviewer 1 Report
- at abstract all abbreviations must be defined, also the main problem statement of this work needs to add in the abstract.
- The work did not address the comparison with the previous works at all, or even the comparison between the different VR algorithms, and it is possible, as an example, to compare this work with the works of sources 4, 21 and 25.
- Reference 4 and 22 are the same.
- AP deployment methods can be reviewed and specify why the author proposed to use AP association method?
Author Response
Please see the attachment.
Author Response File: 
Author Response.pdf
Reviewer 2 Report
The very good, original paper related to actual problems in telecommunication and electronics. The very good presentation of problem, the elabotaed model is clear and correct, the simulation corresonds to the model and the problem, the trsults are related to the future research works.
From mathematical point the reviewer has not remarks, all formulae are explained.. The graphic illustrations are readable and clear.
Author Response
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Author Response File: Author Response.pdf
Reviewer 3 Report
The work appears to be at an early stage. Thus, there is a lack of information about the interference between APs. Additionally, it is unclear how the cache would be used in the APs. Therefore, I suggest that the authors perform more tests using network simulators that can present data more consistent with real scenarios with APs.
The authors state that: "APs are deployed in large numbers at the edge of the network". However, it is not clear in the work how it is done. Therefore, I suggest the authors explain in detail issues such as the use of multiple channels and frequencies to avoid interference and other strategies used in networks with multiple APs.
The work declares that the APs have a "certain caching capacity". However, the text has no details on how this cache will be created within the APs. In addition, it is not clear what the policy for storing and discarding cache information will be.
The authors need to explain in detail how they intend to use a cache on the APs. Therefore, avoid phrases like this: "The AP has a certain caching function for the content viewed by users within a certain period of time."
Please rewrite this sentence: "For the whole request latency will include
the link latency, backhaul latency (i.e., the connection between the access node and the core network), and in the scenario of dense AP deployment, the backhaul latency is too large will affect the overall average download latency. "
It would be interesting to carry out experiments in simulators such as NS3 to verify the efficiency of the proposal.
Please rewrite this sentence : " As shown in Figure 3-4, the ACs in the edge autonomous network undertake the work of connecting the edge network to the core network, which is similar to the role of an edge network gateway."
The work presents writing problems, such as grammatical errors.
Author Response
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Author Response File: Author Response.pdf
Reviewer 4 Report
l The abbreviations should be given the full name when they appear in the main text. For example, MMKP first appears in sec. 1 but no full name is given. HMD too.
l The baseline schemes [27][28] are too old (2016 or earlier). The proposed scheme must be compared to the state of the arts (SOTA) in the simulation results. The Related Works sections should be revised accordingly. The outdated references should be replaced by SOTAs.
l The explanation about (13) is not clear in the paragraph below (11-16). Each user can only be associated with “one” AP?
l Association, matching, pairing, etc. is a fundamental problem in communication networks. Associating AP to VR users in this paper is in principle similar to pairing NOMA users to a subcarrier/beamforming cluster, etc. The authors should comment about this in the introduction section such as
Low complexity user selection and power allocation for uplink NOMA beamforming systems, YH Chen et al. - Wireless Personal Communications, 2020
l The AP association in this paper is a basic problem. The similar problems and solutions exist in other fields such as the previous comments. The authors should emphasize the novelty further. For example VR users require ultra high bandwidth and/or ultra low delay.
Author Response
Please see the attachment
Author Response File: Author Response.pdf
Round 2
Reviewer 3 Report
The authors have satisfactorily addressed most of my concerns.
Reviewer 4 Report
All comments are fully addressed
