Guest lecture: Opportunistic Communication at the Fringe of Networking

Prof. Gunnar Karlsson, KTH Royal Institute of Technology, Sweden.

01.10.2018 | Jens Kargaard Madsen

Dato tir 09 okt
Tid 13:15 14:15
Sted Room 408, building 5125, Finlandsgade 22, 8200 Aarhus N

A most enduring concept from the telephony era is the continuous connection. Even the voluminous research on ad hoc networks treated mobility and churn as exceptional cases, as problems to be overcome. We have taken another view and have for a decade been studying intermittent communication directly among mobile devices in the form of opportunistic networking. There are several reasons for considering communication among devices: they might not be covered by an network infrastructure because it has not been built, or it is inaccessible due to failure or censorship, or the access is unaffordable. Other reasons for device-to-device communication are that the network is overloaded and that it simply is not needed because the communication is localized. The design of an opportunistic communication system needs considering the mobility of the devices that carry data between the short interactions of the devices as well as energy limits of the battery. In this talk, I will present our system design and evaluation, the approach we take to modeling human mobility and an application for distributed voting.

Gunnar Karlsson is professor of KTH Royal Institute of Technology since 1998 and has served as the head of the Department of Network and System Engineering until the end of 2017. He has previously worked for IBM Zurich Research Laboratory and the Swedish Institute of Computer Science (SICS). He holds a PhD from Columbia University and a MS degree from Chalmers University of Technology; he has been visiting professor at ETH Zurich, EPFL and Aalto University. His current research relates to opportunistic networking, mobility modeling and educational technology.