Available Master topics: Networks
The Data Centre Transmission Control Protocol (DCTCP) is widely used in private networks (e.g. Microsoft's and Google's data centres). DCTCP minimises queuing delay in these networks by reducing its rate in proportion to the /extent/ of congestion.
Generic UDP Encapsulation (GUE) has been proposed by Google and Facebook to make data flows and a virtual network identifier visible within data centre networks so that diverse routing can be applied for robustness.
Weighted fair queuing (WFQ) has been a widely used component of networks since it was first proposed in the late 1980s. It involves scheduling jobs (packets in the case of the Internet) so that each user gets the weighted share of capacity they have contracted to receive.
The immense popularity of mobile devices like smartphones and tablets, combined with the availability of high-capacity 3G and 4G mobile networks, has radically changed the way most people access and use the Internet.
MONROE project has developed a unique distributed platform to conduct independent, repeatable, multi-homed, large-scale measurement and experimental campaigns for collecting data from operational Mobile Broadband (3G and 4G) networks.
Consumers, businesses and public services rely heavily on access to the Internet. Wireless and mobile access to Internet has therefore become a crucial asset in people ́s everyday life and businesses. Mobile broadband (MBB) networks (e.g.
Crowdsourcing apps (e.g. mobiperf, speedtest, etc...) are widely used to measure mobile broadband (e.g. 3G, 4G) performance by highlighting performance differences across operators, access technologies, and regions.
Over the past few years, we have building and operating the NorNet Edge (NNE) infrastructure for measuring the quality of mobile broadband networks in Norway. NNE consists of about a hundred measurement nodes that are spread all over Norway.
Many parts of the globe frequently suffer natural disasters such as hurricanes, earthquakes, etc. These disasters disrupt vital communication, and utility infrastructures which in turn may result in endangering lives.
As Internet capacity has increased, delay has become the critical factor limiting performance. Active Queue Management (AQM) is an important class of techniques for reducing queuing delay.
Cloud data centres typically sell processing by the second, storage by the GB and network capacity by the Gb/s; plus sometimes data volume sent and/or received as well.
Today, multimedia transmissions account for more than 80% of the traffic through cellular and data networks. Along with the popularity and use of multimedia, network power consumption has increased heavily in the recent years.
Multimedia such as image, audio and video, is an increasingly significant source of sensory observations and information about activities, incidents and the environment.