DC 欄位 | 值 | 語言 |
dc.contributor.author | 孫雅麗 | zh_TW |
dc.creator | 孫雅麗 | - |
dc.date | 2000 | zh_TW |
dc.date.accessioned | 2006-07-26T01:37:16Z | - |
dc.date.accessioned | 2018-06-29T12:46:51Z | - |
dc.date.available | 2006-07-26T01:37:16Z | - |
dc.date.available | 2018-06-29T12:46:51Z | - |
dc.date.issued | 2000 | - |
dc.identifier | 892219E002002 | zh_TW |
dc.identifier.uri | http://ntur.lib.ntu.edu.tw//handle/246246/18814 | - |
dc.description.abstract | 隨著網際網路的盛行,許多網路應用
程式相繼出現,這些應用需要得到一定程
度的傳輸服務品質保證,才能讓使用者感
受到其實用性,但目前的網際網路只提供
盡力服務,並不能給予這些應用程式有效
的支援。目前已經發展出一些即時媒體應
用能夠視封包遭遇到的延遲動態調整資
料的傳送,他們並不需要絕對可靠的封包
延遲上限,但必須盡可能避免封包在傳輸
過程中被丟棄,本研究即針對這類應用程
式提供『無壅塞服務』,我們將其定義為
『保證聚合資料流的最大封包遺失率為
ε』,希望將來可以應用於IETF 整合服務
架構下的負載控制服務。本研究首先對台
大校園骨幹網路做實際流量的量測及趨
勢分析,以瞭解網路資料流的特性。結果
顯示網路負載具有近似常態分配的特
性,可進一步用於網路流量的預測以及網
路資源的規劃與控制。此外,我們針對『無
壅塞服務』的提供,提出一個動態頻寬與
緩衝區分配的方法。實驗結果顯示避免頻
寬使用率太高及動態分配頻寬可以有效
抑制壅塞的發生。當網路流量的自我相似
性不是很顯著時,配置適量的緩衝區更有助於封包遺失率的降低。 | zh_TW |
dc.description.abstract | High quality, absolute guaranteed
service may not be required by all
applications. Many real-time applications,
such as nv, ivs and vic, recently developed
for packet-switched networks are capable of
adapting their transmission to actual packet
delays. They can as well tolerate occasional
delay bound violations in the presence of
transient network congestion. For this type
of applications, an absolutely reliable bound
on packet delivery times is not required.
Moreover, many non-real-time applications
such as on-line transaction processing and
distributed simulation would desire a
congestion-free packet delivery service from
the network. This new type of service is
called “Congestion-Free Service” with the
guarantee of a maximum packet loss rate.
This work considers resource
allocation in the support of “Congestion-Free
Service” in Broadband Internet. First,
we studied traffic characterization under
different measurement models via analyzing
traffic traces collected from National
Taiwan University campus network. The
results show that traffic load can be
approximated by the Normal distribution. In
the second part of the work, we proposed a
dynamic bandwidth and queue management
scheme to support “Congestion-Free Service.” Simulation results show that in
order to maintain a maximum packet loss
rate, it is important that the system avoids
operating at heavy loads, i.e. high link
utilization. In a link sharing system,
dynamic bandwidth allocation based on
input loads can effectively avoid congestion.
Furthermore, when combined with active
queue management, it can further
accommodate transient traffic bursts for
non-self-similar traffic. | en |
dc.format | application/pdf | zh_TW |
dc.format.extent | 61148 bytes | - |
dc.format.mimetype | application/pdf | - |
dc.language | zh-TW | zh_TW |
dc.language.iso | zh_TW | - |
dc.publisher | 臺北市:國立臺灣大學資訊管理學系暨研究所 | zh_TW |
dc.rights | 國立臺灣大學資訊管理學系暨研究所 | zh_TW |
dc.subject | 無壅塞 | zh_TW |
dc.subject | 封包遺失率 | zh_TW |
dc.subject | 流量量測 | zh_TW |
dc.subject | 量測窗 | zh_TW |
dc.subject | 頻寬分配 | zh_TW |
dc.subject | 緩衝區管理 | zh_TW |
dc.subject | congestion-free | en |
dc.subject | packet loss rate | en |
dc.subject | traffic measurement | en |
dc.subject | measurement window | en |
dc.subject | bandwidth allocation | en |
dc.subject | buffer management | en |
dc.title | 寬頻網際網路服務品質保證(II)─子計畫三:支援寬頻網際網路「負載控制服務」以量測為基礎的允諾控制與擁塞避免機制(I) | zh_TW |
dc.title.alternative | Measurement-based Admission Control and Congestion Avoidance Schemes for
Controlled-Load Service in Broadband Internet | en |
dc.type | other | en |
dc.identifier.uri.fulltext | http://ntur.lib.ntu.edu.tw/bitstream/246246/18814/1/892219E002002.pdf | - |
dc.coverage | 計畫年度:89
第一期;起迄日期:1999-08-01/2000-07-31 | zh_TW |
item.fulltext | with fulltext | - |
item.openairetype | other | - |
item.languageiso639-1 | zh_TW | - |
item.openairecristype | http://purl.org/coar/resource_type/c_1843 | - |
item.grantfulltext | open | - |
item.cerifentitytype | Products | - |
crisitem.author.dept | Information Management | - |
crisitem.author.parentorg | College of Management | - |
顯示於: | 資訊管理學系
|