Computer Science > Networking and Internet Architecture
arXiv:2205.05314 (cs)
[Submitted on 11 May 2022]
Title:Statistical Characterization of Closed-Loop Latency at the Mobile Edge
View a PDF of the paper titled Statistical Characterization of Closed-Loop Latency at the Mobile Edge, by Suraj Suman and Federico Chiariotti and Cedomir Stefanovic and Strahinja Dosen and Petar Popovski
View PDFAbstract:The stringent timing and reliability requirements in mission-critical applications require a detailed statistical characterization of the latency. Teleoperation is a representative use case, in which a human operator (HO) remotely controls a robot by exchanging command and feedback signals. We present a framework to analyze the latency of a closed-loop teleoperation system consisting of three entities: HO, robot located in remote environment, and a Base Station (BS) with Mobile edge Computing (MEC) capabilities. A model of each component of the system is used to analyze the closed-loop latency and decide upon the optimal compression strategy. The closed-form expression of the distribution of the closed-loop latency is difficult to estimate, such that suitable upper and lower bounds are obtained. We formulate a non-convex optimization problem to minimize the closed-loop latency. Using the obtained upper and lower bound on the closed-loop latency, a computationally efficient procedure to optimize the closed-loop latency is presented. The simulation results reveal that compression of sensing data is not always beneficial, while system design based on average performance leads to under-provisioning and may cause performance degradation. The applicability of the proposed analysis is much wider than teleoperation, for systems whose latency budget consists of many components.
| Comments: | Submitted to IEEE Transactions on Communications |
| Subjects: | Networking and Internet Architecture (cs.NI) |
| Cite as: | arXiv:2205.05314 [cs.NI] |
| (orarXiv:2205.05314v1 [cs.NI] for this version) | |
| https://doi.org/10.48550/arXiv.2205.05314 arXiv-issued DOI via DataCite |
Submission history
From: Federico Chiariotti [view email][v1] Wed, 11 May 2022 07:41:40 UTC (335 KB)
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View a PDF of the paper titled Statistical Characterization of Closed-Loop Latency at the Mobile Edge, by Suraj Suman and Federico Chiariotti and Cedomir Stefanovic and Strahinja Dosen and Petar Popovski
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