Framing ATM Cells for Satellite Onboard Switching

1. Introduction There argon many reasons to interconnect send and ATM net sounds, in the main the fortuity of real(prenominal) fast deployment of large-scale broadband service over blanket(a) geographical areas. However, several problems arise that prevents a seamless integrating of these two technologies. For example, the jail cell transport method acting should be adapted to the burst error characteristics of planet links, which are very different to those of fiber optic; the link memory price of admission schemes should be optimized for ATM technology; more elaborate transaction management procedures are necessary in gild to cheer the QoS of ATM connections over satellite channels; etc.[1] Several of these problems back end be better dealt with if we allow for onboard processing. In fact, the requirement of brassy and minuscular user terminals has been satisfied by the use of octuple beams, which suggests the possibility of some form of teddy between beams. O f course, the lacuna milieu imposes several constraints to the onboard switches, which should be added to the typical system requirements order in terrestrial networks. These constraints include, mainly, lightweight to meet the size, mass and authority limitations of the satellite, and increase fault tolerance to meet the expected animateness reliableness of the satellite.

[2] For all these reasons, it has been asked if terrestrial ATM cells should be classify into frames in the first place transmission over satellite channels for onboard switch over [3]. In effect, if to each one user sends its cells directly to the satellite, the contention will work in a cell basis as soundly as the onboard switching operations, i.e., o! ne contention and one switching operation per cell slot. But if we form clusters of users within each spot beam, mathematical group their cells into frames according to their destination and sending these frames to the satellite, and then the consequence of contenders, the number of contentions and the number of switching... If you want to get a full essay, order it on our website: OrderEssay.net

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