DeepAI AI Chat
Log In Sign Up

Latency Minimization for Task Offloading in Hierarchical Fog-Computing C-RAN Networks

03/26/2020
by   Yijin Pan, et al.
Southeast University
University of Kent
0

Fog-computing network combines the cloud computing and fog access points (FAPs) equipped with mobile edge computing (MEC) servers together to support computation-intensive tasks for mobile users. However, as FAPs have limited computational capabilities and are solely assisted by a remote cloud center in the baseband processing unit (BBU) of the cloud radio access (C-RAN) network, the latency benefits of this fog-computing C-RAN network may be worn off when facing a large number of offloading requests. In this paper, we investigate the delay minimization problem for task offloading in a hierarchical fog-computing C-RAN network, which consists of three tiers of computational services: MEC server in radio units, MEC server in distributed units, and the cloud computing in central units. The receive beamforming vectors, task allocation, computing speed for offloaded tasks in each server and the transmission bandwidth split of fronthaul links are optimized by solving the formulated mixed integer programming problem. The simulation results validate the superiority of the proposed hierarchical fog-computing C-RAN network in terms of the delay performance.

READ FULL TEXT

page 1

page 2

page 3

page 4

02/07/2020

Compressive Massive Access for Internet of Things: Cloud Computing or Fog Computing?

This paper considers the support of grant-free massive access and solves...
07/20/2019

Latency Minimization for Multiuser Computation Offloading in Fog-Radio Access Networks

This paper considers computation offloading in fog-radio access networks...
05/13/2022

Task Allocation for Energy Optimization in Fog Computing Networks with Latency Constraints

Fog networks offer computing resources with varying capacities at differ...
07/01/2022

On the Performance of Data Compression in Clustered Fog Radio Access Networks

The fog-radio-access-network (F-RAN) has been proposed to address the st...
07/11/2021

Offloading Optimization with Delay Distribution in the 3-tier Federated Cloud, Edge, and Fog Systems

Mobile edge computing and fog computing are promising techniques providi...
11/24/2020

Peer Offloading with Delayed Feedback in Fog Networks

Comparing to cloud computing, fog computing performs computation and ser...
02/12/2020

Modelling Fog Offloading Performance

Fog computing has emerged as a computing paradigm aimed at addressing th...