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Politecnico di Torino
(89 results)-
White Papers
Optimizing Deep Packet Inspection for High-Speed Traffic Analysis
August 5, 2010, 12:00am PDT
Deep Packet Inspection (DPI) techniques are considered extremely expensive in terms of processing costs and therefore are usually deployed in edge networks, where the amount of data to be...
Provided by Politecnico di Torino
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White Papers
Energy - Aware UMTS Core Network Design
June 20, 2008, 12:00am PDT
Over the last few years, telecom operators account for sizeable power consumption worldwide. The ratio of power demand versus resources is on the rise, and energy costs are steadily increasing....
Provided by Politecnico di Torino
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White Papers
Hy-Sim: Model Based Hybrid Simulation Framework for WSN Application Development
February 10, 2010, 12:00am PST
By bringing the physical world and the virtual one closer, one is able to expand the possibilities of accelerating and easing embedded system design. In case of Wireless Sensor Network (WSNs),...
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White Papers
Optical-Based COTS Data Communication Bus for Satellites
September 1, 2008, 12:00am PDT
COTS components are gathering more and more interest from satellite developers thanks to their lower cost and ease of procurement as compared to space qualified ones. A number of studies to...
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White Papers
Engineering a Quality of Service-Enabled Network: A Case Study
June 26, 2009, 12:00am PDT
This paper presents a case study concerning a network operator that wants to provide services with a certain degree of quality to its customers. Users are presented with a set of services with...
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White Papers
NETPDL: An Extensible XML-Based Language for Packetheader Description
January 1, 2010, 12:00am PST
Although several applications need to know the format of network packets to perform their tasks, till now, each application uses its own packet description database. This paper addresses this...
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White Papers
Design of Fault-Tolerant Logical Topologies in Wavelength-Routed Optical IP Networks
January 1, 2011, 12:00am PST
In this paper the authors illustrate a new methodology for the design of fault-tolerant logical topologies in wavelength-routed optical networks exploiting wavelength division multiplexing, and...
Provided by Politecnico di Torino
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White Papers
Measuring IP and TCP Behavior on a Edge Node
November 6, 2007, 12:00am PST
This paper presents Tstat, a new tool for the collection and statistical analysis of TCP/IP traffic, able to infer TCP connection status from trace data. Discussing its use, the authors present...
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White Papers
A Holistic Approach to Information Distribution in Ad Hoc Networks
January 13, 2009, 12:00am PST
The authors investigate the problem of spreading information contents in a wireless ad hoc network with mechanisms embracing the peer-to-peer paradigm. In the vision, information dissemination...
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White Papers
Efficient LDPC Codes Over GF(q) for Lossy Data Compression
January 28, 2009, 12:00am PST
In this paper the authors consider the lossy compression of a binary symmetric source. They present a scheme that provides a low complexity lossy compressor with near optimal empirical...
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White Papers
Bandlimited Field Reconstruction for Wireless Sensor Networks
February 1, 2008, 12:00am PST
Wireless sensor networks are often used for environmental monitoring applications. In this paper sampling and reconstruction of a physical field is one of the most important problems to solve. The...
Provided by Politecnico di Torino
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White Papers
A Lightweight Distributed Solution to Content Replication in Mobile Networks
September 10, 2009, 12:00am PDT
Performance and reliability of content access in mobile networks is conditioned by the number and location of content replicas deployed at the network nodes. Facility location theory has been the...
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White Papers
Improving the Reusability and Interoperability of E-Learning Material
June 9, 2009, 12:00am PDT
A key requirement for e-learning materials is reusability and interoperability, that is the possibility to use at least part of the contents in different courses, and to deliver them trough...
Provided by Politecnico di Torino
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White Papers
Modern Standard-Based Access Control in Network Services: XACML in Action
December 1, 2008, 12:00am PST
Access control in distributed systems is a complex problem that can be tackled in several ways. The XACML standard provides a possible solution, with several benefits and some drawbacks. In this...
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White Papers
A Review of Localization Algorithms for Distributed Wireless Sensor Networks in Manufacturing
July 2, 2009, 12:00am PDT
Wireless Sensor Networks (WSNs) typically consist of a large number of densely populated sensor nodes. Due to important advances in integrated circuits and radio technologies, the use of...
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White Papers
An Empirical Regressive Model to Improve the Metrological Performance of Mobile Spatial Coordinate Measuring Systems
May 7, 2010, 12:00am PDT
The Mobile Spatial coordinate Measuring system (MScMS) is a system to perform dimensional measurements of large-scale objects. It consists of a wireless measuring probe with UltraSonic (US)...
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White Papers
A Wireless Sensor Network-Based Approach to Large-Scale Dimensional Metrology
February 14, 2011, 12:00am PST
In many branches of industry, dimensional measurements have become an important part of the production cycle, in order to check product compliance with specifications. This task is not trivial...
Provided by Politecnico di Torino
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White Papers
Efficient Broadcasting of Safety Messages in Multihop Vehicular Networks
January 1, 2011, 12:00am PST
Broadcasting of safety messages is one of the fundamental services in multihop vehicular networks. These services typically require to deliver the information to all vehicles traveling over a...
Provided by Politecnico di Torino
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Whitepapers
Remote Ethernet PLC Networking and Control
November 26, 2009, 12:00am PST
Now-a-days, in the people highly automated, high-tech society, programmable logic controllers PLC are as common as their personal computers or laptops. They are more resilient and more compact...
Provided by Politecnico di Torino
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Whitepapers
Dimensioning Rules Regarding Radio Resources in GSM/GPRS Networks
August 1, 2009, 12:00am PDT
Many paper have studied traffic modeling in GSM/GPRS networks trying to establish different performance parameters needed for dimensioning purposes. An important element of these networks is the...
Provided by Politecnico di Torino
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Whitepapers
Traffic Models and Associated Parameters in GSM/(E)GPRS Networks
August 1, 2009, 12:00am PDT
GSM/ (E)GPRS networks support a mixture of traffic consisting of voice and data. A key concept of dimensioning radio resources in such networks is represented by sharing resources between...
Provided by Politecnico di Torino
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White Papers
Service Providers Indexing Using P2P Systems
January 4, 2010, 12:00am PST
The idea of sharing resources across the network has become very popular during the last few years, leading to a diversified scenario in which shared resources include not only files and videos...
Provided by Politecnico di Torino
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White Papers
SPAF: Stateless FSA-Based Packet Filters
June 29, 2010, 12:00am PDT
The authors propose a stateless packet filtering technique based on Finite-State Automata (FSA). FSAs provide a comprehensive framework with well-defined composition operations that enable the...
Provided by Politecnico di Torino
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White Papers
Creating Portable and Efficient Packet Processing Applications
March 6, 2011, 12:00am PST
Network processors are special-purpose programmable units deployed in many modern high-speed network devices, which combine flexibility and high performance. However, software development for...
Provided by Politecnico di Torino
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White Papers
Reliable SPARQL Queries With Consistent Results Over P2P-Shared RDF Storage
November 19, 2010, 12:00am PST
One aim of the semantic web is to build large knowledge bases distributed over the internet. Knowledge management systems that gather, merge and make available the information physically stored in...
Provided by Politecnico di Torino
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White Papers
Cross-Layer Perceptual ARQ for Video Communications Over 802.11eWireless Networks
July 2, 2007, 12:00am PDT
This paper presents an application-level perceptual ARQ algorithm for video streaming over 802.11e wireless networks. A simple and effective formula is proposed to combine the perceptual and...
Provided by Politecnico di Torino
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White Papers
Linked Data Approach for Selection Process Automation in Systematic Reviews
February 8, 2011, 12:00am PST
A systematic review is a literature review performed to answer a set of research questions and has to be performed according to a pre-defined protocol describing how primary sources are selected...
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White Papers
Distributed Semantic Video Tagging for Peer-to-Peer Authoring System
June 8, 2010, 12:00am PDT
The paper is aimed at the development of a cooperative and distributed Authoring System to facilitate the production, sharing, and integration of new and existing content from various domains,...
Provided by Politecnico di Torino
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White Papers
Perceptual Based Voice Multi-Hop Transmission Over Wireless Sensor Networks
March 2, 2009, 12:00am PST
Multimedia applications over Wireless Sensor Networks (WSNs) are rapidly gaining interest by the research community in order to develop new and mission critical services such as environmental...
Provided by Politecnico di Torino
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White Papers
Error Resilient Real-Time Multimedia Streaming Over Vehicular Networks
April 9, 2009, 12:00am PDT
This paper focuses on the optimized transmission of multimedia sequences over Vehicular Ad-hoc NETworks (VANETs). Among the main drawbacks of the high node mobility of the vehicular scenario are...
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White Papers
Rate-Distortion Optimized H.264/mvc Video Communications Over Qos-Enabled Networks
April 7, 2009, 12:00am PDT
This paper presents a rate-distortion optimized framework for the transmission of stereoscopic H.264/MVC video on QoS-enabled networks. The distortion caused by the loss of each encoding unit is...
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White Papers
Content-Adaptive Robust H.264/SVC Video Communications Over 802.11e Networks
February 20, 2009, 12:00am PST
In this paper the authors present a low-complexity traffic prioritization strategy for video transmission using the H.264 Scalable Video Coding (SVC) standard over 802.11e wireless networks. The...
Provided by Politecnico di Torino
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White Papers
High-Performance H.264/SVC Video Communications in 802.11e Ad Hoc Networks
January 11, 2010, 12:00am PST
This work focuses on improving the performance of video communications based on the recently developed H.264 Scalable Video Coding (SVC) standard over 802.11e wireless networks. The H.264/SVC...
Provided by Politecnico di Torino
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White Papers
Traffic Prioritization of H.264/SVC Video Over 802.11e Ad Hoc Wireless Networks
December 12, 2008, 12:00am PST
The H.264/SVC video codec extends the H.264/AVC standard with scalability features. In this paper the authors introduce a traffic prioritization algorithm suitable for the transmission of both...
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White Papers
Multicast Voice Transmission Over Vehicular Ad Hoc Networks: Issues and Challenges
January 24, 2008, 12:00am PST
In this paper the authors analyze the challenges and issues of transmitting multicast voice streams in a Vehicular Ad hoc Network (VANET). The considered scenario focuses on the multicast...
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White Papers
Audio Communication in Multicast 802.11 Vehicular Ad Hoc Networks for Safety Applications
June 29, 2007, 12:00am PDT
In this paper the authors analyze the performance of multimedia communication in a Vehicular Ad hoc Network (VANET). The authors focus on the multicast transmission of multimedia signals (MP3...
Provided by Politecnico di Torino
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White Papers
Perceptually-Optimized Packet Scheduling for Real-Time 802.11 Video Communications Between Vehicles
June 3, 2007, 12:00am PDT
The automotive industry is increasingly looking at solutions for intervehicle wireless communications for applications ranging from safety to entertainment. Warning signals are the most immediate...
Provided by Politecnico di Torino
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White Papers
Hybrid Bitrate/PSNR Control for H.264 Video Streaming to Roaming Users
January 1, 2011, 12:00am PST
In wireless communications, the available throughput depends on several parameters, like physical layer, base station distance, fading and interference. Users experience changes in bandwidth...
Provided by Politecnico di Torino
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White Papers
Variable Time-Scale Streaming for Multimedia Transmission Over IP Networks
January 1, 2011, 12:00am PST
Multimedia applications over IP networks are currently at the center of an extraordinary deal of attention. However, for this appealing class of applications to succeed, several major problems...
Provided by Politecnico di Torino
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White Papers
Variable Time-Scale Audio Streaming Over 802.11 Inter-Vehicular Ad-Hoc Networks
January 1, 2011, 12:00am PST
This paper presents an analysis of audio streaming in an inter-vehicular network based on 802.11b wireless devices. In such a scenario characterized by strong link availability variations, the...
Provided by Politecnico di Torino
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Whitepapers
Traffic Models and Associated Parameters in GSM/(E)GPRS Networks
August 1, 2009, 12:00am PDT
GSM/ (E)GPRS networks support a mixture of traffic consisting of voice and data. A key concept of dimensioning radio resources in such networks is represented by sharing resources between...
Provided by Politecnico di Torino
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Whitepapers
Dimensioning Rules Regarding Radio Resources in GSM/GPRS Networks
August 1, 2009, 12:00am PDT
Many paper have studied traffic modeling in GSM/GPRS networks trying to establish different performance parameters needed for dimensioning purposes. An important element of these networks is the...
Provided by Politecnico di Torino
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Whitepapers
Remote Ethernet PLC Networking and Control
November 26, 2009, 12:00am PST
Now-a-days, in the people highly automated, high-tech society, programmable logic controllers PLC are as common as their personal computers or laptops. They are more resilient and more compact...
Provided by Politecnico di Torino
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Whitepapers
A Jabber-Based Management Framework for Heterogeneous Sensor Network Applications
July 1, 2008, 12:00am PDT
The continuously increasing diffusion of application scenarios requiring pervasive data sensing has lead to the development of novel monitoring solutions leveraging on Heterogeneous Sensor...
Provided by Politecnico di Torino
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Whitepapers
Layered Interval Codes for TCAM-Based Classification
January 19, 2009, 12:00am PST
Ternary Content-Addressable Memories (TCAMs) are increasingly used for high-speed packet classification. TCAMs compare packet headers against all rules in a classification database in parallel and...
Provided by Politecnico di Torino
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Whitepapers
Optimal Fast Hashing
January 26, 2009, 12:00am PST
This paper is about designing optimal high-throughput hashing schemes that minimize the total number of memory accesses needed to build and access an hash table. Recent schemes often promote the...
Provided by Politecnico di Torino
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Whitepapers
PEDS: A Parallel Error Detection Scheme for TCAM Devices
January 20, 2009, 12:00am PST
Ternary Content-Addressable Memory (TCAM) devices are increasingly used for performing high-speed packet classification, which is an essential component of many networking applications such as...
Provided by Politecnico di Torino
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Whitepapers
Exploiting Traffic Dynamics in Power-Aware Logical Topology Design
September 1, 2011, 12:00am PDT
The authors propose the Multi-Period Power-Aware Logical Topology Design. They compared two different heuristics and show that exploiting the day-night fluctuations of the traffic can lead to...
Provided by Politecnico di Torino
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Whitepapers
On the Performance of Secure Vehicular Communication Systems
June 11, 2009, 12:00am PDT
Vehicular Communication (VC) systems are being developed primarily to enhance transportation safety and efficiency. Vehicle-to-vehicle communication, in particular frequent cooperative awareness...
Provided by Politecnico di Torino
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White Papers
Offloading Cellular Networks Through ITS Content Download
April 12, 2012, 12:00am PDT
Content downloading by mobile users is expected to significantly increase the cellular network load. Vehicular users, in particular, are likely to engage in information retrieval on the move: in...
Provided by Politecnico di Torino
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White Papers
To Cache or Not to Cache?
January 21, 2009, 12:00am PST
The authors address cooperative caching in mobile ad hoc networks where information is exchanged in a peer-to-peer fashion among the network nodes. Their objective is to devise a fully-distributed...
Provided by Politecnico di Torino
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White Papers
Concealable, Low-Cost Paper-Printed Antennas for WISP-Based RFIDs
March 4, 2011, 12:00am PST
Paper-based, inkjet-printed antennas are proposed in this paper as replacement for the typical antennas used on the WISP RFID tag. These antennas are designed to be as concealable as possible. The...
Provided by Politecnico di Torino
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White Papers
Proactive Seeding for Information Cascades in Cellular Networks
July 29, 2011, 12:00am PDT
In today's Internet, Online Social Networks (OSNs) play an important role in informing users about content. At the same time, mobile devices provide ubiquitous access to this content through the...
Provided by Politecnico di Torino
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White Papers
Formally-Based Black-Box Monitoring of Security Protocols
December 4, 2009, 12:00am PST
In the challenge of ensuring the correct behaviour of legacy implementations of security protocols, a formally-based approach is presented to design and implement monitors that stop insecure...
Provided by Politecnico di Torino
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White Papers
Peer-to-Peer Traffic Classification: Exploiting Human Communication Dynamics
July 9, 2010, 12:00am PDT
This paper focuses on the online classification of traffic generated by P2P applications, considering two approaches with radically different designs. One approach is payload based: it inspects...
Provided by Politecnico di Torino
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White Papers
Experiences of Internet Traffic Monitoring With Tstat
March 10, 2011, 12:00am PST
Since the early days of the Internet, network traffic monitoring has always played a strategic role in understanding and characterize users' activities. In this paper, the authors present their...
Provided by Politecnico di Torino
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White Papers
A Detailed Measurement of Skype Network Traffic
January 24, 2008, 12:00am PST
The last few years witnessed Peer-2-Peer (P2P) and VoIP telephony gaining a tremendous popularity: Skype is beyond doubt the most amazing example of this new phenomenon, as its 170 millions users...
Provided by Politecnico di Torino
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White Papers
Traditional IP Measurements: What Changes in a Today Multimedia IP Network
November 20, 2007, 12:00am PST
ISP which is the main broadband telecommunication company in Italy. The network relies on a fully IP architecture and delivers to the user data, VoIP and IPTV services over a single broadband...
Provided by Politecnico di Torino
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White Papers
An Abacus for P2P-TV Traffic Classification
March 30, 2009, 12:00am PDT
This paper focuses on the online classification of traffic generated by P2P-TV applications, live video delivering services used by an ever increasing number of users worldwide. They designed a...
Provided by Politecnico di Torino
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White Papers
KISS: Stochastic Packet Inspection
February 27, 2009, 12:00am PST
This paper proposes KISS, a new Internet classification method. Motivated by the expected raise of UDP traffic volume, which stems from the momentum of P2P streaming applications, the authors...
Provided by Politecnico di Torino
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White Papers
Evidences Behind Skype Outage
February 26, 2009, 12:00am PST
Skype is one of the most successful VoIP application in the current Internet spectrum. One of the most peculiar characteristics of Skype is that it relies on a P2P infrastructure for the exchange...
Provided by Politecnico di Torino
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White Papers
Kiss to Abacus: A Comparison of P2P-TV Traffic Classifiers
January 13, 2010, 12:00am PST
In the last few years the research community has proposed several techniques for network traffic classification. While the performance of these methods is promising especially for specific classes...
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White Papers
Stochastic Packet Inspection for TCP Traffic
September 9, 2009, 12:00am PDT
In this paper, the authors extend the concept of Stochastic Packet Inspection (SPI) to support TCP traffic classification. SPI is a method based on the statistical fingerprint of the...
Provided by Politecnico di Torino
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White Papers
KISS: Stochastic Packet Inspection Classifier for UDP Traffic
February 18, 2010, 12:00am PST
This paper proposes KISS, a novel Internet classification engine. Motivated by the expected raise of UDP traffic, which stems from the momentum of P2P streaming applications, the authors propose a...
Provided by Politecnico di Torino
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White Papers
Investigating Overlay Topologies and Dynamics of P2P-TV Systems: the Case of SopCast
May 25, 2011, 12:00am PDT
Several successful commercial P2P-TV applications are already available. Unfortunately, some algorithms and protocols they adopt are unknown, since many follow a closed and proprietary design....
Provided by Politecnico di Torino
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White Papers
10-year Experience of Internet Traffic Monitoring With Tstat
January 20, 2011, 12:00am PST
Network monitoring has always played a key role in understanding telecommunication networks since the pioneering time of the Internet. Today, monitoring traffic has become a key element to...
Provided by Politecnico di Torino
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White Papers
Mining Unclassified Traffic Using Automatic Clustering Techniques
February 4, 2011, 12:00am PST
In this paper, the authors present a fully unsupervised algorithm to identify classes of traffic inside an aggregate. The algorithm leverages on the K-means clustering algorithm, augmented with a...
Provided by Politecnico di Torino
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White Papers
Passive Characterization of SopCast Usage in Residential ISPs
June 29, 2011, 12:00am PDT
In this paper, the authors present an extensive analysis of traffic generated by SopCast users and collected from operative networks of three national ISPs in Europe. After more than a year of...
Provided by Politecnico di Torino
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White Papers
Optimal Routing and Scheduling for Deterministic Delay Tolerant Networks
November 25, 2008, 12:00am PST
Delay Tolerant Networks (DTNs), in which contacts between nodes come and go over time, is a promising approach to model communications in mobile ad-hoc networks, where scenarios of network...
Provided by Politecnico di Torino
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White Papers
Design and Control of Next Generation Distribution Frames
May 5, 2011, 12:00am PDT
Today, the permutation of circuits in the Main Distribution Frames (MDF), which connect the subscriber lines to POTS and to DSLAMs, is still operated manually. However, new market regulations,...
Provided by Politecnico di Torino
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White Papers
Multi-Hop Scheduling Algorithms in Switches With Reconfiguration Latency
January 1, 2011, 12:00am PST
Optical Switching Fabrics (OSF) is receiving increasing attention in the design of high speed packet switches, due to their excellent properties in terms of available bandwidth and reduced power...
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White Papers
Performance Limits of Real Delay Tolerant Networks
December 6, 2007, 12:00am PST
The authors consider a generic Delay/Disruption Tolerant Network (DTN) and they focus their investigation on assessing its performance limits. Their contribution is twofold. First, they propose a...
Provided by Politecnico di Torino
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White Papers
Message-Passing for Wireless Scheduling: An Experimental Study
August 30, 2010, 12:00am PDT
In the recent years, message-passing paradigm has emerged as a canonical algorithmic solution to solve network-wide problems by means of minimal local information exchange, across variety of...
Provided by Politecnico di Torino
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White Papers
Information-Theoretic Capacity of Clustered Random Networks
January 8, 2010, 12:00am PST
The authors analyze the capacity scaling laws of clustered ad hoc networks in which nodes are distributed according to a doubly stochastic shot-noise Cox process. They identify five different...
Provided by Politecnico di Torino
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White Papers
Capacity Scaling of Large Wireless Networks With Heterogeneous Clusters
March 9, 2010, 12:00am PST
The authors analyze the capacity scaling laws of wireless networks where the spatial distribution of nodes over the network area exhibits a high degree of clustering. In particular they consider...
Provided by Politecnico di Torino
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White Papers
Restricted Mobility Improves Delay-Throughput Trade-Offs in Mobile Ad-Hoc Networks
April 21, 2010, 12:00am PDT
Previous work on delay-throughput trade-offs in mobile ad hoc networks have mostly been done under the assumption that nodes are homogeneous and uniformly visit the network area. In this paper,...
Provided by Politecnico di Torino
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White Papers
Capacity Scaling of Wireless Networks With Inhomogeneous Node Density: Upper Bounds
January 29, 2009, 12:00am PST
The authors analyze the capacity scaling laws of wireless ad hoc networks comprising significant inhomogeneities in the node spatial distribution over the network area. In particular, they...
Provided by Politecnico di Torino
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White Papers
Deterministic Service on IEEE 802.11-Like Networks
April 9, 2008, 12:00am PDT
Wireless IEEE 802.11 networks are typically deployed as a convenient and flexible way to access wired backbones. However, due to the inherently shared nature and physical properties of their...
Provided by Politecnico di Torino
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White Papers
Modeling Sleep Modes Gains With Random Graphs
January 28, 2011, 12:00am PST
Nowadays two main approaches are being pursued to reduce energy consumption of network devices: the use of sleep modes in which devices can be put in low-power state, and the adoption of energy...
Provided by Politecnico di Torino
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White Papers
Energy-Aware UMTS Access Networks
June 20, 2008, 12:00am PDT
The sensitiveness toward energy consumption problems is driving Telecommunications operators to optimize network equipment utilization. Since cellular systems are often dimensioned for peak hour...
Provided by Politecnico di Torino
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