Toward UAV Control via Cellular Networks: Delay Profiles, Delay Modeling, and a Case Study Within the 5-mile Range

Morales, Jafet; Rodriguez, Gerson; Huang, Grant; Akopian, David

doi:10.1109/taes.2020.2987406

Cited by 16 publications

(6 citation statements)

References 18 publications

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“…In the context of high-speed mobile robots, even a mere 1 ms transmission delay can result in significant movement that cannot be neglected. In such case, the mobile robot may potentially collide with obstacles or pose a risk to the surrounding objects [12].…”

Section: Introductionmentioning

confidence: 99%

WITHDRAWN: Task-oriented mirrored upper-limb robotic training in subacute patients after stroke: a case control study

Huang

Deng

et al. 2022

Preprint

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Objective People with stroke often have upper limb motor impairment, which has an impact on their activities of daily living and quality of life. Robotic-assisted training devices are used for upper limb rehabilitation, but their effectiveness in enhancing activities of daily living is not satisfactory yet. In this study, we combined task-oriented training and mirror training to an upper limb robot, created a task-oriented mirrored upper limb robot (Wisebot X5), and investigated the feasibility and safety of task-oriented mirror robot training for subacute stroke patients and observed its effects on upper limb motor function and activities of daily living. Methods Based on case-control principles, 32 patients with subacute stroke were assigned to receive task-oriented mirrored upper limb rehabilitation robot training for 30 minutes each time, 5 times per week for 4 weeks, or to receive the equivalent duration of conventional occupational therapy training. The primary outcome was the Fugl-Meyer Assessment of the Upper Extremity (FMA-UE), and secondary outcomes were the Modified Barthel Index (MBI), the Stroke Self-Efficacy Scale (SSEQ), the System Usability Scale (SUS), and the Chinese version of the Quebec User Evaluation With Assistive Technology(C-QUEST). Statistical analysis was performed with paired-samples t-test. Results Thirty-two patients participated and completed the study. After the 4-week intervention, for FMA-UE, the experimental group was better than the control group in terms of the change score from the baseline to post intervention (P༜0.05). For MBI and SSEQ, both the experimental and control groups showed significant increases after the intervention(P༜0.05). However, there was no statistical difference between the groups in terms of the change score from the baseline to post intervention(P༞0.05). The usability assessment reported a high level of satisfaction: mean SUS score is 74.84% (SD = 11.64), mean QUEST scale is 4.42 (SD = 0.31). Conclusions Task-oriented mirrored upper-limb robotic training is feasible and safe for patients with subacute stroke. It is beneficial in promoting the recovery of upper limb function and activities of daily living.

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Section: Introductionmentioning

confidence: 99%

WITHDRAWN: Task-oriented mirrored upper-limb robotic training in subacute patients after stroke: a case control study

Huang

Deng

et al. 2022

Preprint

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“…To cope with the last-mile delivery drone system's complexity, we assume full connected infrastructure and battery-bound operation requirements. In this communication system infrastructure context, researches also take into account common UAV communication protocols over cellular links [16], passive sensor nodes in a local sensor network [17], and mobile target tracking [18].…”

Section: Communication System Infrastructurementioning

confidence: 99%

A Roadmap to Nextgen Aircraft Control for Last Mile Delivery Drones

Marcondes¹,

Loubach²,

Sbruzzi³

et al. 2021

Preprint

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<div>According to recent studies, unmanned aerial vehicles (UAV) can play a game-changing part in terms of cost reduction and speed increase to address the last-mile delivery (LMD) problem and also to attend emergencies. Last-mile delivery services are getting more and more relevant, especially when in times where social distance is required. Given this scenario, our paper introduces a cyber-physical (CPS) system roadmap propose applicable for last-mile delivery drones. The proposed CPS guidelines are based on the concept of system of systems to enable an emerging behavior towards smart cities’ governance. In this paper, we also discuss topics from air space control and reservation throughout communication infrastructure and decentralized control supported on a blockchain.</div><div><br></div>

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“…Therefore, the quality of the radio signal also affects the delays of data transmission. Therefore, the delays in a cellular network should be estimated in each cell separately, like it has been done (but not highlighted) in [17][18][19][20]. The quality of the radio signal must also be taken into account because it affects the choice of the modulation and coding scheme of a radio segment.…”

Section: Introductionmentioning

confidence: 99%

An Approach to Obtaining Stable Parameter Estimates Using Experimentally Obtained Delay Values in a Cellular Mobile Network

Kutins,

Brodnevs

2023

Comput. Networks Commun.

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The ability to describe experimentally obtained delay values in a cell of a mobile cellular network allows not only describing the properties of cell delays using only a few parameters, but also to simulate delay values. Unfortunately, occasionally occurring temporary unstable operation of a cellular network, caused by various negative factors, leads to a noticeable increase in delays and, as a result, to a significant distortion of the obtained delay parameters estimates. For this reason, estimates of the delay parameters in a cell should be obtained from experimental data obtained at the time of stable operation of the network. Due to the large amount of experimentally obtained data, the process of checking experimentally obtained delay values for the presence of anomalies should be performed on the application of simple criteria. The aim of this paper is to show an approach to obtaining stable parameter estimates of delay in a cell of a mobile cellular network. The article describes the factors that affect delays stability, assesses the degree of their influence, and also highlights properties that can be used to recognize phenomena that adversely affect the value and stability of delays in order to exclude such experimentally obtained data from the evaluation.

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Toward UAV Control via Cellular Networks: Delay Profiles, Delay Modeling, and a Case Study Within the 5-mile Range

Cited by 16 publications

References 18 publications

WITHDRAWN: Task-oriented mirrored upper-limb robotic training in subacute patients after stroke: a case control study

WITHDRAWN: Task-oriented mirrored upper-limb robotic training in subacute patients after stroke: a case control study

A Roadmap to Nextgen Aircraft Control for Last Mile Delivery Drones

An Approach to Obtaining Stable Parameter Estimates Using Experimentally Obtained Delay Values in a Cellular Mobile Network

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