The Experts below are selected from a list of 99 Experts worldwide ranked by ideXlab platform

Luca Delgrossi - One of the best experts on this subject based on the ideXlab platform.

  • The Internet Stream Protocol
    Design of Reservation Protocols for Multimedia Communication, 1996
    Co-Authors: Luca Delgrossi
    Abstract:

    ST, the Internet Stream Protocol, is perhaps the oldest communication Protocol designed for speech communication over packet-switched networks. It has been developed by Danny Cohen, Estil Hoversten, and Jim Forgie of the M.I.T. Lincoln Laboratory. Jim Forgie is the author of the ST Protocol specifications completed in September 1979 [Forg79]. In the following sections we refer to this Protocol as ST-I, to avoid confusion with its second version, ST-II (see Section 3.2).

  • Internet Stream Protocol Version 2 (ST2) Protocol Specification - Version ST2+
    1995
    Co-Authors: Luca Delgrossi, L. Berger
    Abstract:

    This memo contains a revised specification of the Internet Stream Protocol Version 2 (ST2). ST2 is an experimental resource reservation Protocol intended to provide end-to-end real-time guarantees over an internet. It allows applications to build multi-destination simplex data Streams with a desired quality of service. The revised version of ST2 specified in this memo is called ST2+.

  • Receiver-initiated communication with ST-II
    Multimedia Systems, 1994
    Co-Authors: Luca Delgrossi, Ralf Guido Herrtwich, Frank Oliver Hoffmann, Sibylle Schaller
    Abstract:

    As part of its work on the Heidelberg Transport System (HeiTS) for multimedia communication, the IBM European Networking Center (ENC) has implemented the Experimental Internet Stream Protocol, Version 2 (ST-II). ST-II is a connection-oriented internetworking Protocol for multiple-destination communication of real-time data such as digital audio and video. Although ST-II fits well into typical multimedia application scenarios, some functions are still missing No mechanisms are provided for receiver-initiated communication, allowing receivers to join Streams, specify their quality of service (QOS) requirements, or initiate Stream establishment and resource reservation. In this paper, we present some extensions to tile Protocol that make it fulfill the receivers' needs move adequately. Our approach allows intermediate nodes to execute Stream management functions on behalf of the sender. This way, the Protocol scales better with the number of receivers per Stream, as the origin does not need to track every target.

Reynold Cheng - One of the best experts on this subject based on the ideXlab platform.

  • Probabilistic filters: A Stream Protocol for continuous probabilistic queries
    Information Systems, 2013
    Co-Authors: Yinuo Zhang, Reynold Cheng
    Abstract:

    Pervasive applications, such as natural habitat monitoring and location-based services, have attracted plenty of research interest. These applications, which deploy a lot of sensor devices to collect data from external environments, often have limited network bandwidth and battery resources. The sensors also cannot record accurate values. The uncertainty of data captured by a sensor should thus be considered for query evaluation. To this end, probabilistic queries, which consider data impreciseness and provide statistical guarantees in answers, have been recently studied. We investigate the evaluation of a long-standing (or continuous) probabilistic query in a multi-user environment. We propose the probabilistic filter Protocol, which helps remote sensor devices to decide whether values collected should be reported to the query server. This Protocol can significantly reduce the communication and energy costs of sensor devices. We further introduce probabilistic tolerance, which allows a query user to relax answer accuracy, in order to further reduce the utilization of resources. We extend the Protocol to facilitate concurrent handling of multiple user query requests. Experimental results on sensor and location data show that our method significantly reduces communication, energy consumption, and computational overhead of the system.

Alejandro Buchmann - One of the best experts on this subject based on the ideXlab platform.

  • INFOCOM - Channel-based Unidirectional Stream Protocol (CUSP)
    2010 Proceedings IEEE INFOCOM, 2010
    Co-Authors: Wesley W. Terpstra, Christof Leng, Max Lehn, Alejandro Buchmann
    Abstract:

    This paper presents a novel transport Protocol, CUSP, specifically designed with complex and dynamic network applications in mind. Peer-to-peer applications benefit in particular, as their requirements are met by neither UDP nor TCP. While other modern transports like SCTP or SST have also tried to combine the advantages of TCP and UDP, CUSP overcomes their technical and conceptual shortcomings. CUSP makes it possible to directly express application logic in the message flow. Modern applications need a mixture of request-response, request-multiple-response, publish-subscribe, and message-passing. All of these operations can be conveniently implemented using CUSP's unidirectional Streams. We separate low-level packet management from Streams into reusable channels. A channel connects two applications providing negotiation, congestion control, and cryptography. Developers operate on the Stream level, sending messages as reliable and ordered byte-Streams. Although they may share a common channel, a stall or loss in one Stream does not block the others.

Yao Liang - One of the best experts on this subject based on the ideXlab platform.

  • Compressed data-Stream Protocol: an energy-efficient compressed data-Stream Protocol for wireless sensor networks
    IET Communications, 2011
    Co-Authors: Newlyn Erratt, Yao Liang
    Abstract:

    In this study, the authors present an energy-efficient data compression Protocol for data collection in wireless sensor networks (WSNs). WSNs are essentially constrained by motes’ limited battery power and networks bandwidth. The authors focus on data compression algorithms and Protocol development to effectively support data compression for data gathering in WSNs. Their design of compressed data-Stream Protocol (CDP) is generic in the sense that other lossless or lossy compression algorithms can be easily ‘plugged’ into the proposed Protocol system without any changes to the rest of the CDP. This design intends to support various different WSN applications where users may prefer more specific compression algorithms, tailored to the sensing data characteristics in question, to their general algorithm. CDP is not only able to significantly reduce energy consumptions of data gathering in multi-hop WSNs, but also able to reduce sensor network traffic and thus avoid congestion accordingly. The proposed CDP is implemented on the tinyOS platform using the nesC programming language. To evaluate their work, the authors conduct simulations via TOSSIM and PowerTOSSIM-z with real-world sensor data. The results demonstrate the significance of CDP.

Sanjoy Paul - One of the best experts on this subject based on the ideXlab platform.

  • Internet Stream Protocol - ST2
    Multicasting on the Internet and its Applications, 1998
    Co-Authors: Sanjoy Paul
    Abstract:

    ST2 is an experimental connection-oriented Protocol in the Internet and is a peer of IP. ST2 provides mechanisms to the applications to request reservation of resources within the network. Thus, together with proper scheduling at the routers, ST2 can provide a framework for QOS within the Internet.