Power Aware PoP Design and Auto Configuration

  • Bejerano Y.
  • Vasudevan S.

We consider the problem of the minimizing power consumption of Internet backbone networks by the means of power aware design and auto configuration of the Points of Presence (PoPs). We first show that the problem of achieving a power-optimal PoP design under general traffic demands is NP-Hard. The problem is NP-Hard even when the traffic demands are correlated i.e. traffic demands across different source-destination pairs scale uniformly. Under a simplified model that ignores power consumption of PoP-internal links i.e., links between core routers inside a PoP, we propose the Port-Sorting algorithm which outputs a provably optimal PoP design. Further, we propose an auto-configuration scheme, that activates minimal number of network components for a given traffic load. For the case where the power consumption of PoP-internal links is taken into account, we propose a heuristic based on the Port-Sorting algorithm that achieves power-efficient PoP design and auto-configuration. We conduct extensive simulations to evaluate the energy savings due to our algorithms and compare our algorithms to other candidate algorithms. We find that our PoP design and auto-configuration algorithms achieve near-optimal performance over a wide range of traffic instances and significantly outperform other candidate algorithms. Furthermore, when compared to the state-of-the-art, which leaves all network components running at all times, our algorithms demonstrate over 3x in energy savings for typical traffic loads.

Recent Publications

August 09, 2017

A Cloud Native Approach to 5G Network Slicing

  • Francini A.
  • Miller R.
  • Sharma S.

5G networks will have to support a set of very diverse and often extreme requirements. Network slicing offers an effective way to unlock the full potential of 5G networks and meet those requirements on a shared network infrastructure. This paper presents a cloud native approach to network slicing. The cloud ...

August 01, 2017

Modeling and simulation of RSOA with a dual-electrode configuration

  • De Valicourt G.
  • Liu Z.
  • Violas M.
  • Wang H.
  • Wu Q.

Based on the physical model of a bulk reflective semiconductor optical amplifier (RSOA) used as a modulator in radio over fiber (RoF) links, the distributions of carrier density, signal photon density, and amplified spontaneous emission photon density are demonstrated. One of limits in the use of RSOA is the lower ...

July 12, 2017

PrivApprox: Privacy-Preserving Stream Analytics

  • Chen R.
  • Christof Fetzer
  • Le D.
  • Martin Beck
  • Pramod Bhatotia
  • Thorsten Strufe

How to preserve users' privacy while supporting high-utility analytics for low-latency stream processing? To answer this question: we describe the design, implementation and evaluation of PRIVAPPROX, a data analytics system for privacy-preserving stream processing. PRIVAPPROX provides three properties: (i) Privacy: zero-knowledge privacy (ezk) guarantees for users, a privacy bound tighter ...