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The Synergy of Edge and Central Cloud Computing with Wireless MIMO Backhaul

Hu, X; Wang, L; Wong, KK; Tao, M; Zhang, Y; Zheng, Z; (2020) The Synergy of Edge and Central Cloud Computing with Wireless MIMO Backhaul. In: Proceedings of the 2019 IEEE Global Communications Conference (GLOBECOM). IEEE: Waikoloa, HI, USA. Green open access

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Abstract

In this paper, the synergy of combining the edge and central cloud computing is studied in heterogeneous cellular networks (HetNets). Multi-antenna small base stations (SBSs) equipped with edge cloud servers offer computing services for user equipment (UEs) proximally, whereas a macro base station (MBS) provides central cloud computing services for UEs via wireless multiple-input multiple-output (MIMO) backhaul allocated to their associated SBSs. With task processing latency constraints for UEs, the network energy consumption is minimized through jointly optimizing the cloud selection, the UEs' transmit powers, the SBSs' receive beamformers, and the SBSs' transmit covariance matrices. A mixed integer and non-convex optimization problem is formulated, and a decomposition algorithm is proposed to obtain a tractable solution iteratively. The simulation results confirm that great performance improvement can be achieved compared with the traditional scheme with central cloud computing only.

Type: Proceedings paper
Title: The Synergy of Edge and Central Cloud Computing with Wireless MIMO Backhaul
Event: 2019 IEEE Global Communications Conference (GLOBECOM)
ISBN-13: 978-1-7281-0962-6
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/GLOBECOM38437.2019.9014044
Publisher version: https://doi.org/10.1109/GLOBECOM38437.2019.9014044
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Cloud computing, Task analysis, Energy consumption, Covariance matrices, Edge computing, Wireless communication, MIMO communication
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10094221
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