Queue-Aware Joint Optimization of Offloading and Transmission in Wireless Mobile Edge Computing Systems

doi:10.13190/j.jbupt.2018-256

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2019, Vol. 42 ›› Issue (3): 14-20.doi: 10.13190/j.jbupt.2018-256

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Queue-Aware Joint Optimization of Offloading and Transmission in Wireless Mobile Edge Computing Systems

TENG Ying-lei¹, LIU Wei¹, OUYANG Wei-ping², LI Kun³, SONG Mei¹

1. School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China;
2. Huawei Technologies CO., LTD, Shenzhen 518129, China;
3. Institute of Standard Metrology, China Academy of Railway Sciences, Beijing 100081, China

Received:2018-10-16 Online:2019-06-28 Published:2019-06-20

Abstract

Abstract: Considering task queue model on both user and mobile edge computing (MEC) server side, a dynamic computing task offloading problem in multi-user-multi-MEC-server system is proposed. To find the optimal offloading and corresponding uplink precoding strategy, a long-term average overhead containing delay and power consumption of the whole system optimization problem is formulated. The original problem is transformed into a single-stage cost target optimization problem based on Lyapunov optimization method and further converted into a typical DC programming problem by utilizing successive approximation and semi-definite relaxation. Simulation shows that the proposed scheme characterized by optimizing precoding design can meet the lower delay and power consumption requirements.

Key words: mobile edge computing, precoding, Lyapunov optimization, convex optimization

CLC Number:

TN929.53

TENG Ying-lei, LIU Wei, OUYANG Wei-ping, LI Kun, SONG Mei. Queue-Aware Joint Optimization of Offloading and Transmission in Wireless Mobile Edge Computing Systems[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2019, 42(3): 14-20.

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Queue-Aware Joint Optimization of Offloading and Transmission in Wireless Mobile Edge Computing Systems

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