AT&T Labs

Displaying 1 - 10 of 25 results

  • EyeDecrypt - Private Interactions in Plain Sight

    White Papers // Sep 2013 // provided by AT&T Labs

    The authors introduce EyeDecrypt, a novel technology for privacy-preserving human-computer interaction. EyeDecrypt allows only authorized users to decipher data shown on a public display, such as an electronic screen or printed material; in the former case, the authorized user can then interact with the system (e.g., by pressing buttons), without ...

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  • A Novel Bargaining Based Incentive Protocol for Opportunistic Networks

    White Papers // Nov 2012 // provided by AT&T Labs

    Opportunistic networks are the emerging networks featured by partitions, long disconnections, and topology instability, where the message propagation depends on the cooperation of nodes to fulfill a "Store-carry-and-forward" fashion. But due to constrained energy and buffer, some nodes may behave selfishly, which will involve damage to the existing routing approaches ...

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  • Statistical Distortion: Consequences of Data Cleaning

    White Papers // Aug 2012 // provided by AT&T Labs

    The authors introduce the notion of statistical distortion as an essential metric for measuring the effectiveness of data cleaning strategies. They use this metric to propose a widely applicable yet scalable experimental framework for evaluating data cleaning strategies along three dimensions: glitch improvement, statistical distortion and cost-related criteria. Existing metrics ...

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  • Writing on Insertion Paper

    White Papers // May 2012 // provided by AT&T Labs

    The capacity of insertion channels, even in the presence of feedback, is an open problem in information theory. In this paper, the authors prove that the capacity of insertion channel with non-causal insertion information at the transmitter is 1 even when the receiver do not know the insertion pattern. This ...

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  • A Data Warehousing Architecture for Enabling Service Provisioning Process

    White Papers // Sep 2011 // provided by AT&T Labs

    In this paper, the authors focus on the following problem in information management: given a large collection of recorded information and some knowledge of the process that is generating this data they want to build a compact, non-redundant collection of summary (aggregate) tables and indices to facilitate flexible decision support ...

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  • Optimizing Cloud Resources for Delivering IPTV Services through Virtualization

    White Papers // Sep 2011 // provided by AT&T Labs

    Virtualized cloud-based services can take advantage of statistical multiplexing across applications to yield significant cost savings to the operator. However, achieving similar benefits with real-time services can be a challenge. In this paper, the authors seek to lower a provider's costs of real-time IPTV services through a virtualized IPTV architecture ...

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  • Characterizing Fairness for 3G Wireless Networks

    White Papers // Sep 2011 // provided by AT&T Labs

    The end to end system data performance over a 3G cellular network depends on many factors such as the number of users, interference, multipath propagation, radio resource management techniques as well as the interaction between these mechanisms and the transport protocol's flow and congestion mechanisms. Using controlled experiments in a ...

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  • COPSS: An Efficient Content Oriented Publish/Subscribe System

    White Papers // Aug 2011 // provided by AT&T Labs

    Content-Centric Networks (CCN) provides substantial flexibility for users to obtain information without regard to the source of the information or its current location. publish/subscribe (pub/sub) systems have gained popularity in society to provide the convenience of removing the temporal dependency of the user having to indicate an interest each time ...

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  • Geocast for Wireless Sensor Networks

    White Papers // Aug 2011 // provided by AT&T Labs

    An important but relatively less studied class of network layer protocol for sensor networks is geocast. It allows a sensor node to send messages to all nodes in a given geographical area without the sender node having any knowledge about which nodes are present in that area. Developing a robust ...

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  • Scalable Geocast for Vehicular Networks

    White Papers // Jul 2011 // provided by AT&T Labs

    This paper presents GeoVCom, a robust geocast protocol for vehicular networks. GeoVCom allows a vehicle to send geocast messages to all vehicles in a given geographical area without the sender having any knowledge about which vehicles are present in that area. GeoVCom is ad hoc, scalable and can handle communications ...

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