IEEE Communications Magazine

Issue 7 • July 1988

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Displaying Results 1 - 5 of 5
  • Packet forwarding

    Publication Year: 1988, Page(s):8 - 17
    Cited by:  Papers (6)  |  Patents (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1052 KB)

    A packet network is viewed as consisting of two major interacting layers: a lower layer responsible for the determination of a set of paths that can be used to carry packet flows, and an upper layer responsible for actually sending the flows over these paths, on a per-packet basis. A systematic review is provided of the various techniques that can be used to perform the actual packet-by-packet rou... View full abstract»

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  • Fragmentation in store-and-forward message transfer

    Publication Year: 1988, Page(s):18 - 27
    Cited by:  Papers (4)  |  Patents (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1115 KB)

    The advantages of store-and-forward (S/F) message transfer at the application layer and problems with existing systems are discussed. Current systems suffer from the limitation that if an intermediate message transfer agent (MTA), the entity responsible for storing and forwarding messages, cannot store a message in its entirety due to insufficient buffer space, then the transfer fails. A mechanism... View full abstract»

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  • VSAT networks: architectures, protocols, and management

    Publication Year: 1988, Page(s):28 - 38
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (996 KB)

    VSAT (very-small-aperture terminal) satellite networks, are discussed, focusing on a particular network called STARCOM. The STARCOM system architecture is presented. A multiple-access protocol developed specifically for the STARCOM system is described and its performance is examined. The management capabilities of the STARCOM system are considered in detail.<> View full abstract»

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  • Packet switch architectures and user protocol interfaces for VSAT networks

    Publication Year: 1988, Page(s):39 - 47
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (751 KB)

    The architecture of VSAT (very-small-aperture terminal) satellite networks is discussed. The use of VSAT networks in existing applications is examined. Internal VSAT architectures, most of which are designed as packet-switching networks in a star configuration with a central packet switch performing routing and relay functions, are discussed. Three types of interface-synchronous-multipoint-protoco... View full abstract»

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  • Differential operation of the Global Positioning System

    Publication Year: 1988, Page(s):48 - 60
    Cited by:  Papers (40)  |  Patents (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1172 KB)

    The principles of differential operation of the Global Positioning System (DGPS) are discussed. DGPS error sources and their influence on spatial and temporal correlation are analyzed. The standards for the differential corrections and the auxiliary messages which have been developed by the Radio Technical Commission for Maritime Services are then described. The dependence of DGPS accuracy on sate... View full abstract»

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Huawei Technologies