不使用跨层通信的多接入边缘计算的最优资源管理

IF 1 4区 计算机科学 Q4 COMPUTER SCIENCE, HARDWARE & ARCHITECTURE Performance Evaluation Pub Date : 2024-09-12 DOI:10.1016/j.peva.2024.102445
Ankita Koley, Chandramani Singh
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引用次数: 0

摘要

我们考虑的多接入边缘计算(MEC)系统包含一组用户、一个带有 MEC 服务器的基站(BS)和一个云服务器。用户可以在本地提供服务请求,也可以将服务请求卸载到基站,而基站又可以在 MEC 上提供卸载请求的子集,并将请求转发到云服务器。用户设备和 MEC 服务器可以动态配置,以提供不同类别的服务。卸载到 BS 的服务请求会产生卸载成本,而转发到云的服务请求则会产生额外成本;这些成本可能是服务费或延迟。在保持稳定的前提下,总成本最小化要求在用户和 MEC 服务器的应用层实现最佳服务调度和卸载,并在用户的 MAC 层实现最佳上行链路数据包调度。基于背压(BP)的经典解决方案需要跨层信息交换,因此不可行。我们提出了基于虚拟队列的漂移加惩罚算法,该算法吞吐量最优,可任意达到最佳延迟,但不需要跨层通信。我们首先考虑了不带本地计算的 MEC 系统,随后扩展了我们的框架,将本地计算也纳入其中。我们证明,所提出的算法与基于 BP 的算法具有几乎相同的性能。这些算法包含可调整的参数,可在用户和 BS 的队列长度与卸载成本之间进行权衡。
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Optimal resource management for multi-access edge computing without using cross-layer communication

We consider a Multi-access Edge Computing (MEC) system with a set of users, a base station (BS) with an attached MEC server, and a cloud server. The users can serve the service requests locally or can offload them to the BS which in turn can serve a subset of the offloaded requests at the MEC and can forward the requests to the cloud server. The user devices and the MEC server can be dynamically configured to serve different classes of services. The service requests offloaded to the BS incur offloading costs and those forwarded to the cloud incur additional costs; the costs could represent service charges or delays. Aggregate cost minimization subject to stability warrants optimal service scheduling and offloading at the users and the MEC server, at their application layers, and optimal uplink packet scheduling at the users’ MAC layers. Classical back-pressure (BP) based solutions entail cross-layer message exchange, and hence are not viable. We propose virtual queue-based drift-plus-penalty algorithms that are throughput optimal, and achieve the optimal delay arbitrarily closely but do not require cross-layer communication. We first consider an MEC system without local computation, and subsequently, extend our framework to incorporate local computation also. We demonstrate that the proposed algorithms offer almost the same performance as BP based algorithms. These algorithms contain tuneable parameters that offer a trade off between queue lengths at the users and the BS and the offloading costs.

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来源期刊
Performance Evaluation
Performance Evaluation 工程技术-计算机:理论方法
CiteScore
3.10
自引率
0.00%
发文量
20
审稿时长
24 days
期刊介绍: Performance Evaluation functions as a leading journal in the area of modeling, measurement, and evaluation of performance aspects of computing and communication systems. As such, it aims to present a balanced and complete view of the entire Performance Evaluation profession. Hence, the journal is interested in papers that focus on one or more of the following dimensions: -Define new performance evaluation tools, including measurement and monitoring tools as well as modeling and analytic techniques -Provide new insights into the performance of computing and communication systems -Introduce new application areas where performance evaluation tools can play an important role and creative new uses for performance evaluation tools. More specifically, common application areas of interest include the performance of: -Resource allocation and control methods and algorithms (e.g. routing and flow control in networks, bandwidth allocation, processor scheduling, memory management) -System architecture, design and implementation -Cognitive radio -VANETs -Social networks and media -Energy efficient ICT -Energy harvesting -Data centers -Data centric networks -System reliability -System tuning and capacity planning -Wireless and sensor networks -Autonomic and self-organizing systems -Embedded systems -Network science
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