Literature Database Entry

You2017energyefficient

Changsheng You, Kaibin Huang, Hyukjin Chae and Byoung-Hoon Kim, "Energy-Efficient Resource Allocation for Mobile-Edge Computation Offloading," IEEE Transactions on Wireless Communications (TWC), vol. 16 (3), pp. 15, March 2017.

Abstract

Mobile-edge computation offloading (MECO) off-loads intensive mobile computation to clouds located at the edges of cellular networks. Thereby, MECO is envisioned as a promising technique for prolonging the battery lives and enhancing the computation capacities of mobiles. In this paper, we study resource allocation for a multiuser MECO system based on time-division multiple access (TDMA) and orthogonal frequency-division multiple access (OFDMA). First, for the TDMA MECO system with infinite or finite cloud computation capacity, the optimal resource allocation is formulated as a convex optimization problem for minimizing the weighted sum mobile energy consumption under the constraint on computation latency. The optimal policy is proved to have a threshold-based structure with respect to a derived offloading priority function, which yields priorities for users according to their channel gains and local computing energy consumption. As a result, users with priorities above and below a given threshold perform complete and minimum offloading, respectively. Moreover, for the cloud with finite capacity, a sub-optimal resource-allocation algorithm is proposed to reduce the computation complexity for computing the threshold. Next, we consider the OFDMA MECO system, for which the optimal resource allocation is formulated as a mixed-integer problem. To solve this challenging problem and characterize its policy structure, a low-complexity sub-optimal algorithm is proposed by transforming the OFDMA problem to its TDMA counterpart. The corresponding resource allocation is derived by defining an average offloading priority function and shown to have close-to-optimal performance in simulation.

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Changsheng You
Kaibin Huang
Hyukjin Chae
Byoung-Hoon Kim

BibTeX reference

@article{You2017energyefficient,
    author = {You, Changsheng and Huang, Kaibin and Chae, Hyukjin and Kim, Byoung-Hoon},
    doi = {10.1109/TWC.2016.2633522},
    title = {{Energy-Efficient Resource Allocation for Mobile-Edge Computation Offloading}},
    pages = {15},
    journal = {IEEE Transactions on Wireless Communications (TWC)},
    issn = {1536-1276},
    publisher = {IEEE},
    month = {3},
    number = {3},
    volume = {16},
    year = {2017},
   }
   
   

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