Hierarchical MEC Servers Deployment and User-MEC Server Association in C-RANs over WDM Ring Networks.

Clicks: 122
ID: 103838
2020
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Abstract
With the increasing number of Internet of Things (IoT) devices, a huge amount of latency-sensitive and computation-intensive IoT applications have been injected into the network. Deploying mobile edge computing (MEC) servers in cloud radio access network (C-RAN) is a promising candidate, which brings a number of critical IoT applications to the edge network, to reduce the heavy traffic load and the end-to-end latency. The MEC server's deployment mechanism is highly related to the user allocation. Therefore, in this paper, we study hierarchical deployment of MEC servers and user allocation problem. We first formulate the problem as a mixed integer nonlinear programming (MINLP) model to minimize the deployment cost and average latency. In terms of the MINLP model, we then propose an enumeration algorithm and approximate algorithm based on the improved entropy weight and TOPSIS methods. Numerical results show that the proposed algorithms can reduce the total cost, and the approximate algorithm has lower total cost comparing the heaviest-location first and the latency-based algorithms.
Reference Key
liu2020hierarchicalsensors Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Liu, Zhen;Zhang, Jiawei;Li, Yanan;Ji, Yuefeng;
Journal sensors
Year 2020
DOI
E1282
URL
Keywords
cloud radio access network (c-ran) hierarchical deployment of mec servers mobile edge computing (mec) user allocation

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