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  4. Spatiotemporal Dependable Task Execution Services in MEC-Enabled Wireless Systems
 
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Spatiotemporal Dependable Task Execution Services in MEC-Enabled Wireless Systems

Publikationstyp
Journal Article
Date Issued
2021
Sprache
English
Author(s)
Emara, Mustafa  orcid-logo
ElSawy, Hesham  
Filippou, Miltiades C.  
Bauch, Gerhard  
Institut
Nachrichtentechnik E-8  
TORE-URI
http://hdl.handle.net/11420/9103
Journal
IEEE wireless communications letters  
Volume
10
Issue
2
Start Page
211
End Page
215
Citation
IEEE Wireless Communications Letters 10 (2): 211-215 (2021)
Publisher DOI
10.1109/LWC.2020.3024749
Scopus ID
2-s2.0-85101470387
Multi-access Edge Computing (MEC) enables computation and energy-constrained devices to offload and execute their tasks on powerful servers. Due to the scarce nature of the spectral and computation resources, it is important to jointly consider i) contention-based communications for task offloading and ii) parallel computing and occupation of failure-prone MEC processing resources (virtual machines). The feasibility of task offloading and successful task execution with virtually no failures during the operation time needs to be investigated collectively from a combined point of view. To this end, this letter proposes a novel spatiotemporal framework that utilizes stochastic geometry and continuous time Markov chains to jointly characterize the communication and computation performance of dependable MEC-enabled wireless systems. Based on the designed framework, we evaluate the influence of various system parameters on different dependability metrics such as (i) computation resources availability, (ii) task execution retainability, and (iii) task execution capacity. Our findings showcase that there exists an optimal number of virtual machines for parallel computing at the MEC server to maximize the task execution capacity.
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