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17. Are Remote Play Streaming Systems Doomed to Fail? A Network Perspective.

Author

Bujari, Armir, Gaggi, Ombretta, Palazzi, Claudio E., and Quadrio, Giacomo

Subjects
COMPUTER science, BANDWIDTHS, STREAMING media, VIDEO recording
Abstract

Digital games represent one of the most compelling fields in computer science, embodying a wide variety of technical challenges. Thanks to the evolution of streaming and broadband technology, new service provisioning schemes have emerged. Remote play streaming services represent an interesting case study deserving a thorough investigation. To this end, we present a network measurement study that can be useful to create traffic models and help researchers identify issues, guiding architecture, and protocol design. Moving beyond latency and jitter issues, our purpose is to understand whether remote play streaming services can operate through regular connectivity or, on the contrary, are doomed to fail as happened to some pioneer providers. We have hence deployed a testbed to test the impact of network limitations and, different from previous studies, we particularly emphasize the role of the available bandwidth in this context. [ABSTRACT FROM AUTHOR]

Published
2021
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23. A Virtual PEP for Web Optimization over a Satellite-Terrestrial Backhaul.

Author

Bujari, Armir, Luglio, Michele, Palazzi, Claudio E., Quadrini, Mattia, Roseti, Cesare, and Zampognaro, Francesco

Subjects
*VIRTUAL networks, *INTERNET traffic, *TELECOMMUNICATION, *WIRELESS communications, *COMPUTER architecture, *TELECOMMUNICATION satellites
Abstract

The availability of network softwarization and virtualization technology in the field of telecommunications has opened the door to a radical review of the applications, protocols, and deployment models. In this evolving framework, old assumptions and constraints specific to satellite communications must be carefully re-assessed. To this aim, we revisit the role of the performance enhancing proxy (PEP), replaced by a chain of custom virtual network functions properly enabled to optimize common web traffic performance over a backhaul dynamically enabled with a supplementary satellite link. The resulting virtual PEP (vPEP) is compliant with the breakthrough virtualization and slicing paradigms and can fruitfully exploit the advanced features of the most recent IETF technologies such as QUIC and MPTCP. [ABSTRACT FROM AUTHOR]

Published
2020
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33. A Comparison of Stateless Position-based Packet Routing Algorithms for FANETs.

Author

Bujari, Armir, Palazzi, Claudio E., and Ronzani, Daniele

Subjects
ALGORITHMS, MOBILE computing, WIRELESS sensor networks, ROUTING (Computer network management), WIRELESS communications
Abstract

Scalable routing for wireless communication systems is a compelling and challenging task. To this aim, routing algorithms exploiting geographic information have been proposed. These algorithms refer to nodes by their location, rather than their address, and use those coordinates to route greedily towards a destination. With the advent of unmanned airborne vehicle (UAV) technology, a lot of research effort has been devoted to extend position-based packet routing proposals to three dimensional environments. In this context, Flying Ad-hoc Networks (FANETs), comprised of autonomous flying vehicles, pose several issues. This work focuses on the state-of-the-art, stateless geographic packet routing protocols conceived or adapted for three-dimensional network scenarios. Proposals are evaluated over a common scenario through a comprehensive comparative analysis. [ABSTRACT FROM AUTHOR]

Published
2018
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47. Vegas Over Access Point: Making Room for Thin Client Game Systems in a Wireless Home.

Author

Bujari, Armir, Massaro, Michele, and Palazzi, Claudio Enrico

Subjects
*CLOUD computing, *VIDEO games, *WIRELESS communications, *COMPUTER input-output equipment, *TCP/IP, *ALGORITHMS
Abstract

Cloud-based entertainment is gaining momentum. With the cost of commodity hardware lowering by the day and the consumer market penetration of in-house digital entertainment systems, a new generation of interactive services has come into being. This new technological wave has launched new content producers and providers that are rapidly adapting to match the consumer demand. In this context, thin client or cloud-based gaming is attracting much attention, shifting the computational burden to the cloud while the consumer enjoys a fat video feed accessed through its thin client via the shared wireless gateway. However, this model of interaction raises new challenges that demand for specific networking solutions aimed at addressing the heterogeneous flow coexistence problem at the home wireless gateway. We propose a solution to this problem by devising a Transmission Control Protocol Vegas-like congestion control algorithm deployed on top of the home gateway. Our solution works out of the box with the standard protocols at the server, router, and client levels, thereby making deployment straightforward. Experimental assessment with real traffic traces shows that our solution addresses the problem effectively. [ABSTRACT FROM AUTHOR]

Published
2015
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