Search results for: Peter Steenkiste

Items from 1 to 20 out of 57 results

chapter

Secure Tera-scale Data Crunching with a Small TCB

Bruno Vavala, Nuno Neves, Peter Steenkiste

2017 47th Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN) > 169 - 180

2017 47th Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN)

Outsourcing services to third-party providers comes with a high security cost—to fully trust the providers. Using trusted hardware can help, but current trusted execution environments do not adequately support services that process very large scale datasets. We present LAST-GT, a system that bridges this gap by supporting the execution of self-contained services over a large state, with a small and...

chapter

LASP: Look-ahead spatial protocol for vehicular multi-hop communication

Rui Meireles, Peter Steenkiste, Joao Barros, Daniel C. Moura

2016 IEEE Vehicular Networking Conference (VNC) > 1 - 8

2016 IEEE Vehicular Networking Conference (VNC)

Vehicular multi-hop protocols typically employ distance-based metrics, which do not capture the complexity of vehicular connectivity. In this work we present LASP, a geographic protocol that uses a more accurate spatial connectivity-based metric. Spatial connectivity describes the historical probability of successfully delivering a packet from one geographic area to another. Analysis of data collected...

chapter

Adaptive cloud offloading for vehicular applications

Ashwin Ashok, Peter Steenkiste, Fan Bai

2016 IEEE Vehicular Networking Conference (VNC) > 1 - 8

2016 IEEE Vehicular Networking Conference (VNC)

The growing number of sensor-based interactive applications and services are pushing the limits of the on-board computing resources in vehicles. With vehicles increasingly being connected to the Internet, offloading the computation to cloud-computing infrastructures is an attractive solution. However, the large sensory data inputs of interactive applications makes offloading challenging across dynamic...

chapter

Secure Identification of Actively Executed Code on a Generic Trusted Component

Bruno Vavala, Nuno Neves, Peter Steenkiste

2016 46th Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN) > 419 - 430

2016 46th Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN)

Code identity is a fundamental concept for authenticated operations in Trusted Computing. In today's approach, the overhead of assigning an identity to a protected service increases linearly with the service code size. In addition, service code size continues to grow to accommodate richer services. This trend negatively impacts either the security or the efficiency of current protocols for trusted...

chapter

Software Architecture-Based Adaptation for Pervasive Systems

Shang-Wen Cheng, David Garlan, Bradley Schmerl, João Pedro Sousa, more

Lecture Notes in Computer Science > Trends in Network and Pervasive Computing — ARCS 2002 > System Aspects > 67-82

An important requirement for pervasive computing systems is the ability to adapt at runtime to handle varying resources, user mobility, changing user needs, and system faults. In this paper we describe an approach in which dynamic adaptation is supported by the use of software architectural models to monitor an application and guide dynamic changes to it. The use of externalized models permits one...

chapter

Securing Information Gateways with Derivation-Constrained Access Control

Urs Hengartner, Peter Steenkiste

Lecture Notes in Computer Science > Security in Pervasive Computing > Information Flow and Access Control > 181-195

In pervasive computing environments, information gateways derive specific information, such as a person’s location, from raw data provided by a service, such as a videostream offered by a camera. Here, access control to confidential raw data provided by a service becomes difficult when a client does not have access rights to this data. For example, a client might have access to a person’s location...

chapter

Network-aware distributed computing: A case study

Hongsuda Tangmunarunkit, Peter Steenkiste

Lecture Notes in Computer Science > Parallel and Distributed Processing > 171-182

The development of network-aware applications, i.e. applications that dynamically adapt to network conditions, has had some success in the domain of multimedia applications, but progress has been very slow for distributed computing applications. The reason is that the relationship between application performance and network performance is typically more complex for that class of applications, making...

chapter

Protecting Access to People Location Information

Urs Hengartner, Peter Steenkiste

Lecture Notes in Computer Science > Security in Pervasive Computing > Location Privacy > 25-38

Ubiquitous computing provides new types of information for which access needs to be controlled. For instance, a person’s current location is a sensitive piece of information, and only authorized entities should be able to learn it. We present several challenges that arise for the specification and implementation of policies controlling access to location information. For example, there can be multiple...

chapter

Network-Aware Parallel Computing with Remos

Bruce Lowekamp, Nancy Miller, Dean Sutherland, Thomas Gross, more

Lecture Notes in Computer Science > Languages and Compilers for Parallel Computing > Network Computing > 100-119

Networked systems provide a cost-effective platform for parallel computing, but the applications have to deal with the changing availability of computation and communication resources. Network-awareness is a recent attempt to bridge the gap between the realities of networks and the demands of applications. Network-aware applications obtain information about their execution environment and dynamically...

chapter

An Architecture for the Integration of Physical and Informational Spaces

Scott M. Thayer, Peter Steenkiste

Lecture Notes in Computer Science > Trends in Network and Pervasive Computing — ARCS 2002 > Context-Aware Systems > 7-20

While computer processing power, storage space, and bandwidth capacities are experiencing exponential growth, individual human processing capabilities are not increasing significantly. Pervasive computing creates an environment that offers a wealth of computing resources, I/O capabilities, and sensors. This offers an opportunity for applications to interact with and monitor the physical environment...

chapter

Customizable Cooperative Metering for Multi-ingress Service Level Agreements in Differentiated Network Services

SyedUmairAhmed Shah, Peter Steenkiste

Lecture Notes in Computer Science > Quality of Service — IWQoS 2001 > Aggregation and Active Networks Based QoS > 325-341

In the Differentiated Service architecture an interesting class of SLAs provides guarantees for the traffic flowing from multiple ingress nodes into a single or group of egress nodes. For many distributed services, like a VPN service, where multiple ingress points are sending to the same egress, customers would like to control the bandwidth distribution across the ingress routers, based on their specific...

chapter

A Hybrid Location Model with a Computable Location Identifier for Ubiquitous Computing

Changhao Jiang, Peter Steenkiste

Lecture Notes in Computer Science > UbiComp 2002: Ubiquitous Computing > Location, Location, Location > 246-263

Location modeling and representation are crucial technologies for context-aware applications. In this paper, we present a novel location model combining the virtues of both the hierarchical and coordinate location models, and we introduce a computable location identifier, namely Aura Location Identifier (ALI). We then describe how the Aura space service uses this hybrid model to handle spatial queries...

chapter

Adaptation Models for Network-Aware Distributed Computations

Peter Steenkiste

Lecture Notes in Computer Science > Network-Based Parallel Computing. Communication, Architecture, and Applications > 16-31

Network-aware applications actively adapt to the level of service they receive from the network. This allows the application to execute well over a diverse set of networks and under a wide range of network conditions. However, network diversity and dynamic network conditions make the development of network-aware applications a difficult task, since the developer has to be an expert in both the application...

article

Improving the Accuracy of Environment-Specific Channel Modeling

Xiaohui Wang, Eric Anderson, Peter Steenkiste, Fan Bai

IEEE Transactions on Mobile Computing > 2016 > 15 > 4 > 868 - 882

Networking research benefits from controlled, repeatable experimentation using simulation and emulation systems. Making simulations realistic is a challenge for wireless systems and is especially difficult for vehicular networks. This paper presents a general framework for modeling and reproducing environment-specific channel properties. We show that one can estimate localized environment information,...

chapter

Securing Passive Replication through Verification

Bruno Vavala, Nuno Neves, Peter Steenkiste

2015 IEEE 34th Symposium on Reliable Distributed Systems (SRDS) > 176 - 181

2015 IEEE 34th Symposium on Reliable Distributed Systems (SRDS)

We show how to leverage trusted computing technology to design an efficient fully-passive replicated system tolerant to arbitrary failures. The system dramatically reduces the complexity of a fault-tolerant service, in terms of protocols, messages, data processing and non-deterministic operations. Our replication protocol enables the execution of a single protected service, replicating only its state,...

chapter

Lessons learned from a real vehicular network deployment of delay-tolerant networking

Romeu Monteiro, Luis Guedes, Tiago Condeixa, Filipe Neves, more

2015 IEEE International Conference on Communication Workshop (ICCW) > 2489 - 2494

2015 ICC - 2015 IEEE International Conference on Communications Workshops (ICC)

Vehicular networks are inherently unstable networks with high mobility and intermittent connectivity. These networks can greatly benefit from Delay Tolerant Networking (DTN) solutions for opportunistic connectivity in the transmission of delay-tolerant data. In this paper, we evaluate the performance of different DTN routing protocols in real world vehicular networks with different degrees of connectivity...

chapter

Simulating spatial cross-correlation in vehicular networks

Xiaohui Wang, Eric Anderson, Peter Steenkiste, Fan Bai

2014 IEEE Vehicular Networking Conference (VNC) > 207 - 214

2014 IEEE Vehicular Networking Conference (VNC)

Wireless channels are defined by the presence and motion of objects between and around the communicating stations. As parts of the environment change, so do the channels between stations that are nearby. While the impact of environmental changes on individual channals has been studies extensively, the spatial autocorrelation across multiple channels, which we will call spatial cross-correlation, has...

chapter

Self-automated parking lots for autonomous vehicles based on vehicular ad hoc networking

Michel Ferreira, Luis Damas, Hugo Conceicao, Pedro M. d'Orey, more

2014 IEEE Intelligent Vehicles Symposium Proceedings > 472 - 479

2014 IEEE Intelligent Vehicles Symposium (IV)

Parking is a major problem of car transportation, with important implications in traffic congestion and urban landscape. Reducing the space needed to park cars has led to the development of fully automated and mechanical parking systems. These systems are, however, limitedly deployed because of their construction and maintenance costs. Leveraging on semi and fully-autonomous vehicular technology,...

chapter

Centralized, measurement-based, spectrum management for environments with heterogeneous wireless networks

George Nychis, Charalampos Tsourakakis, Srinivasan Seshan, Peter Steenkiste

2014 IEEE International Symposium on Dynamic Spectrum Access Networks (DYSPAN) > 303 - 314

2014 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN)

Heterogeneity of wireless networks has become an increasing problem in the wireless spectrum that breaks down spectrum sharing and exacerbates interference. Many coexistence techniques have been proposed to alleviate this interference, however, they are difficult to deploy due to changes needed in the protocols, overhead, and rapid changes in technology. In this paper, we focus on the potential of...

article

TVR—Tall Vehicle Relayingin Vehicular Networks

Mate Boban, Rui Meireles, Joao Barros, Peter Steenkiste, more

IEEE Transactions on Mobile Computing > 2014 > 13 > 5 > 1118 - 1131

Vehicle-to-Vehicle (V2V) communication is a core technology for enabling safety and non-safety applications in next generation intelligent transportation systems. Due to relatively low heights of the antennas, V2V communication is often influenced by topographic features, man-made structures, and other vehicles located between the communicating vehicles. On highways, it was shown experimentally that...

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INFONA - science communication portal

Search results for: Peter Steenkiste

Secure Tera-scale Data Crunching with a Small TCB

LASP: Look-ahead spatial protocol for vehicular multi-hop communication

Adaptive cloud offloading for vehicular applications

Secure Identification of Actively Executed Code on a Generic Trusted Component

Software Architecture-Based Adaptation for Pervasive Systems

Securing Information Gateways with Derivation-Constrained Access Control

Network-aware distributed computing: A case study

Protecting Access to People Location Information

Network-Aware Parallel Computing with Remos

An Architecture for the Integration of Physical and Informational Spaces

Customizable Cooperative Metering for Multi-ingress Service Level Agreements in Differentiated Network Services

A Hybrid Location Model with a Computable Location Identifier for Ubiquitous Computing

Adaptation Models for Network-Aware Distributed Computations

Improving the Accuracy of Environment-Specific Channel Modeling

Securing Passive Replication through Verification

Lessons learned from a real vehicular network deployment of delay-tolerant networking

Simulating spatial cross-correlation in vehicular networks

Self-automated parking lots for autonomous vehicles based on vehicular ad hoc networking

Centralized, measurement-based, spectrum management for environments with heterogeneous wireless networks

TVR—Tall Vehicle Relayingin Vehicular Networks

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