2023 journal article

Toward Fast and Energy-Efficient Access to Cloudlets in Hostile Environments

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 22(11), 8320–8335.

By: J. Wang*, S. Pambudi n, W. Wang n & C. Wang n

author keywords: Cloud access; mobile ad-hoc network (MANET); performance evaluation
TL;DR: A packet mobility model is established that allows CAD and energy consumption to be analyzed as a function of the initial device-cloudlet distance, and it is found that the expected CAD scales either linearly or quadratically under distinct types of packet mobility. (via Semantic Scholar)
Source: Web Of Science
Added: January 16, 2024

Cloudlets, which refer to the edge computing services deployed at the proximity of end devices, are key providers of connectivity, storage, and computation resources to many applications. While access to cloudlets is pervasive in typical settings, it can be difficult in challenging, even hostile environments, such as military or post-disaster scenarios, featuring multi-hop communication and energy-constrained end devices. In these cases, cloudlets may have become the only equipment powerful enough to execute life-critical applications, such as battle-field situation awareness, tactic cooperation, and search-and-rescue missions. Quality of these services is greatly influenced by the minimum time that a packet can be delivered, i.e., the cloudlet access delay (CAD), whose characteristics remain unknown. To address the open question of fast and efficient cloudlet access, we establish a packet mobility model that allows CAD and energy consumption to be analyzed as a function of the initial device-cloudlet distance. We find that the expected CAD scales either linearly or quadratically under distinct types of packet mobility, and the successful access rate (SAR) can be bounded by functions of the delay constraint. Based on these findings, we develop a packet shedding algorithm that saves 24% transmission power, and reduces the average CAD by 2%, while maintaining a similar SAR in simulated cloudlet access environments.