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Robust chat for airborne command and control

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dc.contributor.advisor Clifford J. Weinstein and Roger I. Khazan. en_US
dc.contributor.author Ramanan, Prasad, 1980- en_US
dc.contributor.other Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science. en_US
dc.date.accessioned 2005-06-02T19:41:24Z
dc.date.available 2005-06-02T19:41:24Z
dc.date.issued 2003 en_US
dc.identifier.uri http://hdl.handle.net/1721.1/18028
dc.description Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, September 2003. en_US
dc.description "August 22, 2003." en_US
dc.description Includes bibliographical references (p. 87-88). en_US
dc.description.abstract We present the design, implementation, and evaluation of a prototype robust textual chat application to be utilized in dynamic distributed environments such as the Multi-Sensor Command and Control Constellation (MC2C). The MC2C environment consists of a set of airborne and ground sites, each of which contains a cluster of clients. Intra-site communication is reliable and exhibits high performance, whereas the performance and reliability of inter-site communication is variable and unpredictable. The two primary goals of the chat application are to deliver messages to clients with low latency and a globally consistent ordering. Since these goals conflict, our protocols strike a balance by satisfying a new property that we call the Intermittent Global Order (IGO) property. A protocol satisfying the IGO property guarantees global order while network connectivity permits, and sacrifices global order for bounded message delivery latencies while maintaining an intuitive and well-defined ordering on the message delivery when critical network connections are lost. We implemented our protocols on a hierarchical system architecture that places a server at every MC2C site. We developed a test-bed that simulates four MC2C sites in order to test the prototype. Testing revealed that the various IGO protocols implemented in the prototype all achieve the goals of robust and efficient collaborative communication even in the face of frequent link outages, but differ in how each balances global order and latency. en_US
dc.description.statementofresponsibility by Prasad Ramanan. en_US
dc.format.extent 88 p. en_US
dc.format.extent 5268337 bytes
dc.format.extent 5278075 bytes
dc.format.mimetype application/pdf
dc.format.mimetype application/pdf
dc.language.iso eng en_US
dc.publisher Massachusetts Institute of Technology en_US
dc.rights M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. en_US
dc.rights.uri http://dspace.mit.edu/handle/1721.1/7582
dc.subject Electrical Engineering and Computer Science. en_US
dc.title Robust chat for airborne command and control en_US
dc.type Thesis en_US
dc.description.degree M.Eng. en_US
dc.contributor.department Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science. en_US
dc.identifier.oclc 57240474 en_US


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