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Mobile Edge Computing Network Control: Tradeoff Between Delay and Cost

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PubDate: Jul 2020

Teams: University of Southern California;Nokia Bell Lab;University`a degli Studi di Napoli Federico II

Writers: Yang Cai, Jaime Llorca, Antonia M. Tulino, Andreas F. Molisch

PDF: Mobile Edge Computing Network Control: Tradeoff Between Delay and Cost

Abstract

As mobile edge computing (MEC) finds widespread use for relieving the computational burden of compute- and interaction-intensive applications on end user devices, understanding the resulting delay and cost performance is drawing significant attention. While most existing works focus on singletask offloading in single-hop MEC networks, next generation applications (e.g., industrial automation, augmented/virtual reality) require advance models and algorithms for dynamic configuration of multi-task services over multi-hop MEC networks. In this work, we leverage recent advances in dynamic cloud network control to provide a comprehensive study of the performance of multi-hop MEC networks, addressing the key problems of multi-task offloading, timely packet scheduling, and joint computation and communication resource allocation. We present a fully distributed algorithm based on Lyapunov control theory that achieves throughput-optimal performance with delay and cost guarantees. Simulation results validate our theoretical analysis and provide insightful guidelines on the interplay between communication and computation resources in MEC networks.

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