Zichuan Xu
Professor Supervisor of Doctorate Candidates Supervisor of Master's Candidates
Gender:Male
Alma Mater:澳大利亚国立大学
Degree:Doctoral Degree
School/Department:软件学院、国际信息与软件学院
Discipline:Software Engineering
Business Address:开发区校区综合楼
Contact Information:0411-62274514
E-Mail:z.xu@dlut.edu.cn
Hits:
Indexed by:会议论文
Date of Publication:2019-01-01
Included Journals:EI、CPCI-S
Abstract:Driven by stringent delay requirements of mobile applications, the mobile edge cloud has emerged as a major platform to offer low latency network services from the edge of networks. Most conventional network services are implemented via hardware-based network functions, such as firewalls and load balancers, to guarantee service security and performance. However, implementing such hardware-based network functions incurs high purchase and maintenance costs. Network function virtualization (NFV) as a promising technology exhibits great potential to reduce the purchase and maintenance costs by implementing network functions as software in virtual machines (VMs). In this paper, we consider a fundamental problem of NFV-enabled multicasting in a mobile edge cloud, where each multicast request requires to process its traffic in a specified sequence of network functions (referred to as a service chain) before the traffic from a source to a set of destinations. We devise a provable approximation algorithm with an approximation ratio for the problem if requests do not have delay requirements; otherwise, we propose an efficient heuristic for it. We also evaluate the performance of the proposed algorithms against the state-of-the-art NFV-enabled multicasting algorithms, and results show that our algorithms outperform their counterparts.
Currently I am a Professor at Dalian University of Technology. I obtained my PhD degree from Australian National University (ANU), and my PhD thesis is entitled "Cost-Aware Resource Allocation and Provisioning in Cloud Networks". Before joining ANU, I received my Bachelor and Master degree from Dalian University of Technology in China in 2008 and 2011. I was a Research Associate at University College London (UCL) from 2016 to 2017. Website: https://zichuanxu.com/