February 20, 2014

The Past, Present and Future of Mobile Communications

  • Viswanathan H.
  • Weldon M.

Many technologies have revolutionized life throughout the history of humanity, from the creation of hand tools, mechanical devices, powered machines and automated robotic processes and manufacturing. But among these myriad inventions and discoveries, mobile communications stands out as a giant in terms of the combined speed of adoption and the extent of the global transformation it has driven. In about four decades, the technology has reached more than 6 billion people, permanently altering lives in ways that no one imagined was possible in so short a period, and with such global extent. Mobile wireless technology evolution is characterized by ‘generations’ with major shifts in technology between generations and incremental enhancements within each generation. In this paper, we begin with a high-level discussion of the key technology generations starting from analog cellular systems deployed in the 1980s to the 4G Long Term Evolution (LTE) system being deployed today. We highlight the 11 major technical advances that have led to the most significant improvements in cellular technology and then present a view on the future wireless evolution to the beginning of the 5G era.

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 ...