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Modeling and Analysis of Latencies in Multi-User, Multi-RAT Edge Computing

Balaji, R and Mehta, NB and Singh, C (2023) Modeling and Analysis of Latencies in Multi-User, Multi-RAT Edge Computing. In: Modeling, Analysis and Simulation of Wireless and Mobile Systems, 30 DEC 2023, pp. 79-86.

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Official URL: https://doi.org/10.1145/3616391.3622761


Multi-access edge computing enables resource-constrained handsets to offload their tasks to edge servers through multiple radio access technologies (RATs). However, RATs such as cellular and wireless local area network (WLAN) have different access protocols, throughputs, and latencies. We present novel models for accurate analysis of the average task computation delay, accounting for the physical and media access control layer throughputs and latencies. Our analysis considers the uplink latency encountered in offloading tasks to edge servers and the downlink latency in downloading completed tasks from the server to the users. It accounts for the contention-based channel access in a WLAN, in which the number of users that contend is a random process, and the orthogonal channelization based access of a cellular network. We show that WLAN contention delays and their variability have a significant impact on the overall delay. Through a tractable probabilistic offloading policy, we bring out the trade-offs between choosing the different RATs. We also benchmark the performance of this policy against an upper confidence bound�(UCB)-based dynamic offloading policy. © 2023 Owner/Author.

Item Type: Conference Paper
Publication: Q2SWinet 2023 - Proceedings of the 19th ACM International Symposium on QoS and Security for Wireless and Mobile Networks
Publisher: Association for Computing Machinery, Inc
Additional Information: The copyright for this article belongs to Author
Keywords: Computation theory; Economic and social effects; Edge computing; Medium access control; Random processes; Rats; Wireless local area networks (WLAN), Cellular network; Edge computing; Edge server; Fixed point analysis; Modelling and analysis; Multi-access edge computing; Multiaccess; Radio access technologies; Renewal theory; Wlan, Benchmarking
Department/Centre: Division of Electrical Sciences > Electrical Engineering
Date Deposited: 29 Feb 2024 06:29
Last Modified: 29 Feb 2024 06:29
URI: https://eprints.iisc.ac.in/id/eprint/83754

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