Dynamic Task Offloading for NOMA-Enabled Mobile Edge Computing with Heterogeneous Networks

Dynamic Task Offloading for NOMA-Enabled Mobile Edge Computing with Heterogeneous Networks
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通过异构网络实现支持 NOMA 的移动边缘计算的动态任务卸载

DOI:
10.1155/2022/7258236
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发表时间:
2022-09
影响因子:
--
通讯作者:
Jiwei Huang
Jiwei Huang
中科院分区:
计算机科学4区
文献类型:
--
作者:
Kaixin Li;Jiajie Xu;Hua Xing;Ying Chen;Jiwei Huang

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随着物联网(IoT)的快速发展,越来越多的计算密集型任务由IoT设备产生。由于自身的限制,物联网设备无法在本地处理所有任务,有些任务需要卸载到边缘服务器上进行处理。此外,非正交多址(NOMA)技术允许多个物联网设备共享相同的频率资源。物联网设备可以使用NOMA技术来传输数据,以提高数据传输速率。在这篇文章中,我们研究了异构网络中NOMA使能的动态任务卸载问题。我们制定了一个随机优化问题,以尽量减少系统的能源消耗。利用随机优化技术,我们将这个问题转化为一个确定性优化问题,并将其分解为五个子问题来解决。同时,我们提出了一个NOMA启用的动态任务卸载(NDTO)算法。然后,我们从数学上分析了NDTO算法的性能。我们进行了一系列的参数分析实验和对比实验,结果验证了NDTO算法的性能。
With the rapid development of the Internet of Things (IoT), more and more computation-intensive tasks are generated by IoT devices. Due to their own limitations, IoT devices cannot process all tasks locally, and some tasks need to be offloaded to edge servers for processing. In addition, nonorthogonal multiple access (NOMA) technology allows multiple IoT devices to share the same frequency resource. IoT devices can use NOMA technology to transmit data to increase the data transmission rate. In this article, we study the problem of NOMA-enabled dynamic task offloading in heterogeneous networks. We formulate a stochastic optimization problem to minimize system energy consumption. Using stochastic optimization techniques, we transform this problem into a deterministic optimization problem and decompose it into five sub-problems to solve. At the same time, we propose a NOMA-enabled dynamic task offloading (NDTO) algorithm. Then, we mathematically analyze the performance of the NDTO algorithm. We conduct a series of parameter analysis experiments and comparative experiments, and the results verify the performance of the NDTO algorithm.
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