Optimal Offloading with Non-Orthogonal Multiple Access in Mobile Edge Computing

Qi Gu, Gongpu Wang, Jingxian Liu, Rongfei Fan*, Dian Fan, Zhangdui Zhong

*此作品的通讯作者

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20 引用 (Scopus)

摘要

By allowing mobile device to offload all or part of a latency-constrained computational task to a base station at the edge of a network, mobile edge computing (MEC) is a promising technique to help the mobile device save its energy consumption. In this paper, we consider the scenario with one mobile device and multiple edge base stations, which is usual in practice. Nonorthogonal multiple access (NOMA) technique is implemented. An optimization problem is formulated, in which the transmission power to every edge base station and the amount of data to be offloaded for computation is optimized to minimize the total energy consumption of the mobile device. However, the formulated optimization problem is non-convex. To get the global optimal solution, we decompose the formulated optimization problem into two levels. In the lower level, a convex optimization problem is required to be solved. By finding out some special property of the lower level optimization problem, the upper level optimization problem can be formulated as a monotonic optimization problem, whose global optimal solution is achievable. Numerical results verify the effectiveness of our proposed method.

源语言英语
文章编号8647179
期刊Proceedings - IEEE Global Communications Conference, GLOBECOM
DOI
出版状态已出版 - 2018
活动2018 IEEE Global Communications Conference, GLOBECOM 2018 - Abu Dhabi, 阿拉伯联合酋长国
期限: 9 12月 201813 12月 2018

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Gu, Q., Wang, G., Liu, J., Fan, R., Fan, D., & Zhong, Z. (2018). Optimal Offloading with Non-Orthogonal Multiple Access in Mobile Edge Computing. Proceedings - IEEE Global Communications Conference, GLOBECOM, 文章 8647179. https://doi.org/10.1109/GLOCOM.2018.8647179