Unit:
Κατεύθυνση / ειδίκευση Δικτύωση Υπολογιστών (ΔΙΚ)Library of the School of Science
Author:
Λυγίζου Αναστασία
Dissertation committee:
Λάζαρος Μεράκος Καθηγητής (Επιβλέπων), Γεώργιος Στεφάνου Επίκ. Καθηγητής, Ευστάθιος Χατζηευθυμιάδης Αναπλ. Καθηγητής
Original Title:
Διασύνδεση ασύρματων ευρυζωνικών δικτύων με δορυφορικά δίκτυα
Translated title:
Interconnection between a Satellite Interactive Network and wireless broadband networks
Summary:
This doctoral thesis deals with the problem of interconnection between a
satellite interactive network and broadband networks. The time difference
between the capacity request of a satellite terminal and the capacity grant
from the satellite network is at least equal to the round trip delay. To
address this issue, schemes for predicting the needs of connections are used
for capacity allocation purposes. An interconnection mechanism is proposed,
which consists of three parts: 1) an entity at the satellite terminal
responsible for capacity requests, 2) resource allocation to the satellite
terminals and 3) sharing the capacity of a satellite terminal among the
subscribers of the broadband network. We improve all three parts of the
interconnection mechanism aiming to improve the overall performance of the
system, especially for real time traffic that can tolerate less delay. Τhe NLMS
(Normalized Least Mean Square) algorithm is chosen to be used in the first part
of the proposed mechanism. We extend the second part of the mechanism for
performing the slot allocation in MF-TDMA. Finally, we improve the scheduler of
the third part in order to schedule traffic of real time connections of the
broadband network based on Quality of Experience (QoE) metrics.
Keywords:
Traffic scheduling, Quality of service, Quality of experience, Video prediction, Interconnection
Number of index pages:
21-25
