June 01, 2019

An Analysis of Cloud Radio Access Network Availability using Redundancy

  • Gajic B.
  • Khatibi Sina
  • Shah Kunjan

While moving towards next generation wireless technology, virtualization is a key pillar among major enablers. In addition to improved cost efficiency and less hardware dependency virtualization presents an enabler for improved network reliability including Radio Access Network (RAN) reliability by utilizing redundant virtual instances. This paper presents a framework for improved RAN availability. It describes the modes for utilizing redundancy in RAN and RAN self-healing procedures, i.e. steps taken to heal a faulty RAN VNF instance to bring into fully functional state again. In this respect the paper analyses different redundancy schemes through extensive simulations. Each scheme maps to specific set of requirement in terms of virtual resource requirement and resulting achieved availability of RAN. The novelty of the paper is in analysis on Quality of Service impact for different schemes during an event of failure within virtualized RAN. Using the presented approaches, stakeholders can accordingly tailor the network deployment in order to achieve specific set of service goals.

Recent Publications

May 01, 2020

A Packaged 0.01-26-GHz Single-Chip SiGe Reflectometer for Two-Port Vector Network Analyzers

  • Chung H.
  • Ma Q.
  • Rebeiz G.
  • Sayginer M.

© 1963-2012 IEEE. This article presents a packaged SiGe BiCMOS reflectometer for 0.01-26-GHz two-port vector network analyzers (VNAs). The reflectometer chip is composed of a resistive bridge coupler and two wideband heterodyne receivers for coherent magnitude and phase detection. In addition, a high-linearity receiver channel is designed to accommodate 20 ...

August 01, 2019

Protecting photonic quantum states using topology

  • Blanco-Redondo A.

The use of topology to protect quantum information is well-known to the condensed-matter community and, indeed, topological quantum computing is a bursting field of research and one of the competing avenues to demonstrate that quantum computers can complete certain problems that classical computers cannot. In photonics, however, we are only ...

May 01, 2019

Digital networks at the nexus of productivity growth

  • Kamat S.
  • Prakash S.
  • Saniee I.
  • Weldon M.

This paper takes a fresh look at the debate over the relationship between digital technology and productivity. The argument of economic historian Robert J. Gordon is that digital technology will not lead to increases in productivity such as we saw in the last century, based on his analysis of the ...