XXXII Simpósio Brasileiro de
Redes de Computadores e Sistemas Distribuídos

Florianópolis, 5 a 9 de Maio de 2014
Anders Lindgren

Palestrante: Dr. Anders Lindgren, Swedish Institute of Computer Science

Título: Keeping it real! - The need for experiencing and understanding real mobile network environments


Over the past decade, mobile networking has seen an explosive growth, in particular with the introduction of smart-phones. This is creating incredible new opportunities for users to stay connected and utilize our connected society in their daily life. It does however also come with problems as operator networks become overloaded, without operators necessarily understanding exactly how their customers will use the network. Furthermore, it also comes with the risk of further increasing the digital divide between the rich and poor parts of the world, as some societal services will only be available to those with access to connectivity.

In this talk, I will focus on the importance of keeping it real, and not solely design networks based on synthetic models and simulations. Through examples from real deployments, field experiences, and network measurements, I will show some examples of what users really want in different scenarios and how they use the network.

Since mobile networks span a very wide range of scenarios and use cases, I will look at two particular scenarios at the extreme ends of this spectrum. I will explain their differences and similarities and discuss why it is important to understand the specific characteristics of these situations and how they affect network design. In particular, I will look at the following two scenarios based on previous personal experience:
- What can be done for users that do not have access to reliable (or low-capacity) communication infrastructure? I will explain some existing technical solutions for providing network access to people living outside the rich and well-connected parts of the world, and will, most importantly, explain the importance of properly understanding the target user groups in order to create good network designs.
- What are users doing with their smartphones in a highly connected society? In order to understand how to best design network solutions for well-connected urban regions, it is also very important to understand how the users are utilizing the network. We will look at a large data-set collected from a large cellular operator and show some usage trends and explain how this data can be used to improve network performance.


Dr. Anders Lindgren is a senior researcher at SICS Swedish ICT and an adjunct lecturer at Luleå University of Technology. He received his Ph.D. from Luleå University of Technology in 2006, and worked as a postdoctoral researcher at University College London and University of Cambridge. His research interests include opportunistic and information-centric networking, communication and computation in challenged environments, efficient IoT, and big data analytics for mobile networks.

Anders has done much work in the area of Delay- and Disruption Tolerant Networking and contributed to the actions of the DTN Research Group of the IRTF, including creating the PRoPHET routing protocol and the RFC specification of the protocol.

He is also one of the co-founders of the novel ExtremeCom conference series, allowing researchers in extreme communication and computation to discuss their research in relevant environments and experience the challenges of those environments themselves.