Abstract
Aiming at the problem that it is quite hard to guarantee the real-time requirements of medical users with high efficiency and low latency in the current Internet of Medical Things (IoMT), we investigate the task offloading for collaborative cloud-edge-end computing in mobile networks. Non-orthogonal multiple access (NOMA) is suitable for wireless networks with higher spectral efficiency, faster speed, and larger capacity, while the existing cloud-edge-end cooperative computing ignores the advantages of NOMA. Therefore, by exploiting NOMA for improving the efficiency of radio transmission, we integrate collaborative cloud-edge-end computing and NOMA to propose a novel network communication model, which can provide medical users with energy-efficient and low latency services. Specifically, considering the energy consumption, transmission delay, and quality of service, we jointly optimize the offloading decision and its radio resource allocations for NOMA-transmission to reduce the system cost (the weighted sum of consumed energy and delay) in the IoMT of cloud-edge-end computing networks supported by NOMA. Although the joint optimization problem is non-convex, we use its hierarchical structure and propose a collaborative computing offloading algorithm based on deep learning to find the optimal offloading solution. Through extensive simulations, it is shown that the proposed algorithm stably converges to its optimal value, provides approximately 25.2% and 79.2% lower system cost than schemes such as only using edge computing and fully local processing, respectively. In addition, compared with the traditional orthogonal multiple access(OMA), our proposed NOMA-enabled multi-access computation offloading can reduce the system cost by approximately 93.4%.
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The raw/processed data required to reproduce these findings cannot be shared at this time as the data also forms part of an ongoing study.
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Acknowledgements
This research was supported by the following projects:The National Natural Science Foundation of China (61972073), the Key Program of Natural Science Foundation of Hebei Province of China (F2019201290), the Natural Science Foundation of Hebei Province of China (F2018201153).
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Du, R., Liu, C., Gao, Y. et al. Collaborative Cloud-Edge-End Task Offloading in NOMA-Enabled Mobile Edge Computing Using Deep Learning. J Grid Computing 20, 14 (2022). https://doi.org/10.1007/s10723-022-09605-2
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DOI: https://doi.org/10.1007/s10723-022-09605-2