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標題Title: For Delivering Cloud-based IPTV Services
作者Authors: 吳靖緯
上傳單位Department: 資訊工程系
上傳時間Date: 2012-12-7
上傳者Author: 吳靖緯
審核單位Department: 資訊工程系
審核老師Teacher: 許子衡
檔案類型Categories: 研究生論文報告Thesis
關鍵詞Keyword: Cloud, IPTV
摘要Abstract: Cloud computing is a new infrastructure environment
that delivers on the promise of supporting on-demand
services in a flexible manner by scheduling bandwidth, storage
and compute resources on the fly. IPTV services like Video
On Demand (VoD) and Live broadcast TV requires substantial
bandwidth and compute resources to meet the real time requirements
and to handle the very bursty resource requirements
for each of these services. To meet the needs of the bursts of
requests, each with a deadline constraint for both VoD and
LiveTV channel changes, we propose a resource provisioning
framework that allows these services to co-exist on a common
infrastructure by taking advantage of virtualization. We propose
an optimal algorithm that provides the minimum number of
servers needed to fulfill all requests for these services. We prove
this optimality in a general setting for any number of services
with general deadline constraints. By using real world data
from an operational IPTV environment, our results show that
anticipating and thereby enabling the delaying of VoD requests
by up to 30 seconds gives significant resource savings even under
conservative environmental assumptions. We also experiment
with different scenarios (by varying the deadline constraints,
changing the peak to average ratios of the constituent services)
to compute the overall savings.

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